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Sample records for abort system attitude

  1. Max Launch Abort System (MLAS) Pad Abort Test Vehicle (PATV) II Attitude Control System (ACS) Integration and Pressurization Subsystem Dynamic Random Vibration Analysis

    NASA Technical Reports Server (NTRS)

    Ekrami, Yasamin; Cook, Joseph S.

    2011-01-01

    In order to mitigate catastrophic failures on future generation space vehicles, engineers at the National Aeronautics and Space Administration have begun to integrate a novel crew abort systems that could pull a crew module away in case of an emergency at the launch pad or during ascent. The Max Launch Abort System (MLAS) is a recent test vehicle that was designed as an alternative to the baseline Orion Launch Abort System (LAS) to demonstrate the performance of a "tower-less" LAS configuration under abort conditions. The MLAS II test vehicle will execute a propulsive coast stabilization maneuver during abort to control the vehicles trajectory and thrust. To accomplish this, the spacecraft will integrate an Attitude Control System (ACS) with eight hypergolic monomethyl hydrazine liquid propulsion engines that are capable of operating in a quick pulsing mode. Two main elements of the ACS include a propellant distribution subsystem and a pressurization subsystem to regulate the flow of pressurized gas to the propellant tanks and the engines. The CAD assembly of the Attitude Control System (ACS) was configured and integrated into the Launch Abort Vehicle (LAV) design. A dynamic random vibration analysis was conducted on the Main Propulsion System (MPS) helium pressurization panels to assess the response of the panel and its components under increased gravitational acceleration loads during flight. The results indicated that the panels fundamental and natural frequencies were farther from the maximum Acceleration Spectral Density (ASD) vibrations which were in the range of 150-300 Hz. These values will direct how the components will be packaged in the vehicle to reduce the effects high gravitational loads.

  2. Producing change in attitudes toward abortion.

    PubMed

    Lewis, R A

    1977-01-01

    During the 1969-1970 school year, 351 upperclassmen at a southeastern university were used in a study on the use of different communication methods to change attitudes toward abortion. Following the pretest questionnaire, the group was divided into 4 groups and treated in the following ways: 1) a panel from the group presented pros and cons of abortion; 2) the group broke into 5-member discussion groups to talk about attitudes toward abortion; 3) a movie on normal birth was presented to this group; and 4) the 4th group received no interim abortion-related communication. The movie had no effect on abortion attitudes. The discussions had a slight liberalizing effect on abortion attitudes. Less than 3% of the students in the survey changed their attitude. PMID:12308804

  3. Religion and attitudes toward abortion and abortion policy in Brazil.

    PubMed

    Ogland, Curtis P; Verona, Ana Paula

    2011-01-01

    This study examines the association between religion and attitudes toward the practice of abortion and abortion policy in Brazil. Drawing upon data from the 2002 Brazilian Social Research Survey (BSRS), we test a number of hypotheses with regard to the role of religion on opposition to the practice of abortion and its legalization. Findings indicate that frequently attending Pentecostals demonstrate the strongest opposition to the practice of abortion and both frequently attending Pentecostals and Catholics demonstrate the strongest opposition to its legalization. Additional religious factors, such as a commitment to biblical literalism, were also found to be significantly associated with opposition to both abortion issues. Ultimately, the findings have implications for the future of public policy on abortion and other contentious social issues in Brazil.

  4. The Development of Instruments to Measure Attitudes toward Abortion and Knowledge of Abortion

    ERIC Educational Resources Information Center

    Snegroff, Stanley

    1976-01-01

    This study developed an abortion attitude scale and abortion knowledge inventory that may be utilized by health educators, counselors, and researchers for assessing attitudes toward abortion and knowledge about it. (SK)

  5. Acoustic-Modal Testing of the Ares I Launch Abort System Attitude Control Motor Valve

    NASA Technical Reports Server (NTRS)

    Davis, R. Benjamin; Fischbach, Sean R.

    2010-01-01

    The Attitude Control Motor (ACM) is being developed for use in the Launch Abort System (LAS) of NASA's Ares I launch vehicle. The ACM consists of a small solid rocket motor and eight actuated pintle valves that directionally allocate.thrust_- 1t.has-been- predicted-that significant unsteady. pressure.fluctuations.will.exist. inside the-valves during operation. The dominant frequencies of these oscillations correspond to the lowest several acoustic natural frequencies of the individual valves. An acoustic finite element model of the fluid volume inside the valve has been critical to the prediction of these frequencies and their associated mode shapes. This work describes an effort to experimentally validate the acoustic finite model of the valve with an acoustic modal test. The modal test involved instrumenting a flight-like valve with six microphones and then exciting the enclosed air with a loudspeaker. The loudspeaker was configured to deliver broadband noise at relatively high sound pressure levels. The aquired microphone signals were post-processed and compared to results generated from the acoustic finite element model. Initial comparisons between the test data and the model results revealed that additional model refinement was necessary. Specifically, the model was updated to implement a complex impedance boundary condition at the entrance to the valve supply tube. This boundary condition models the frequency-dependent impedance that an acoustic wave will encounter as it reaches the end of the supply tube. Upon invoking this boundary condition, significantly improved agreement between the test data and the model was realized.

  6. Cross-cultural attitudes toward abortion--Greeks versus Americans.

    PubMed

    Bahr, Stephen J; Marcos, Anastasios C

    2003-04-01

    Using data from 1,494 Greeks and 1,993 Americans, this study finds that social abortion attitudes are a separate dimension from physical abortion attitudes. According to our structural equation model, abortion attitudes are influenced significantly by religiosity and sexual liberalism. The model explains social abortion attitudes significantly better than physical abortion attitudes. Although the model is applicable to both countries, there are three major differences between Greece and the United States. First, in Greece religiosity has a smaller impact on sexual liberalism, and sexual liberalism has a much weaker impact on both types of abortion attitudes, particularly social abortion attitudes. Second, in Greece religiosity is more strongly related to abortion attitudes than in the United States, particularly to social abortion attitudes. Third, education has a weaker influence in Greece than in the United States.

  7. Attitudes towards abortion in the Danish population.

    PubMed

    Norup, Michael

    1997-10-01

    This article reports the results of a survey, by mailed questionnaire, of the attitudes among a sample of the Danish population towards abortion for social and genetic reasons. Of 1080 questionnaires sent to a random sample of persons between 18 and 45 years, 731 (68%) were completed and returned. A great majority of the respondents were liberal towards early abortion both for social reasons and in case of minor disease. In contrast, there was controversy about late abortions for social reasons and in the case of Down syndrome. Further there was strong reluctance to accept late abortion in case of minor disease. An analysis of the response patterns showed that most of the respondents had gradualist views on abortion, i.e. they would allow all early abortions, but only abortions for some reasons later in pregnancy. It was also found that the number who would find an early abortion acceptable in general was much higher than the number who would accept it in their own case. These findings suggest that a great part of the resistance towards abortion does not rest on a concern for the rights and interests for the fetus. Instead it may be explained on a view according to which fetal life is ascribed intrinsic moral value.

  8. Medical Students’ Attitudes toward Abortion Education: Malaysian Perspective

    PubMed Central

    Tey, Nai-peng; Yew, Siew-yong; Low, Wah-yun; Su’ut, Lela; Renjhen, Prachi; Huang, M. S. L.; Tong, Wen-ting; Lai, Siow-li

    2012-01-01

    Background Abortion is a serious public health issue, and it poses high risks to the health and life of women. Yet safe abortion services are not readily available because few doctors are trained to provide such services. Many doctors are unaware of laws pertaining to abortion. This article reports survey findings on Malaysian medical students’ attitudes toward abortion education and presents a case for including abortion education in medical schools. Methods and Results A survey on knowledge of and attitudes toward abortion among medical students was conducted in two public universities and a private university in Malaysia in 2011. A total of 1,060 students returned the completed questionnaires. The survey covered about 90% of medical students in Years 1, 3, and 5 in the three universities. About 90% of the students wanted more training on the general knowledge and legal aspects of abortion, and pre-and post-abortion counseling. Overall, 75.9% and 81.0% of the students were in favor of including in medical education the training on surgical abortion techniques and medical abortion, respectively. Only 2.4% and 1.7% were opposed to the inclusion of training of these two methods in the curriculum. The remaining respondents were neutral in their stand. Desire for more abortion education was associated with students’ pro-choice index, their intention to provide abortion services in future practice, and year of study. However, students’ attitudes toward abortion were not significantly associated with gender, type of university, or ethnicity. Conclusions Most students wanted more training on abortion. Some students also expressed their intention to provide abortion counseling and services in their future practice. Their desire for more training on abortion should be taken into account in the new curriculum. Abortion education is an important step towards making available safe abortion services to enable women to exercise their reproductive rights. PMID:23300600

  9. Abortion attitudes in context: a multidimensional vignette approach.

    PubMed

    Hans, Jason D; Kimberly, Claire

    2014-11-01

    The effects of relationship status, rationale for considering abortion (life circumstance versus health issue), and the male partner's wishes on abortion attitudes were examined using a multiple-segment factorial vignette with a probability sample of 532 Kentucky households. Respondents expressed strong opinions in the absence of contextual details, yet many shifted the direction of their strongly-held positions once contextual information was revealed that challenged their initial assumptions. Results confirm and extend prior research by indicating that attitudes are strongly held but are simultaneously highly responsive to context. The validity of surveys and polls that attempt to measure global attitudes toward abortion, such as pro-choice versus pro-life, in the absence of contextual details is therefore questioned. The full context of one's life and situation is weighed in the abortion decision-making process, and our findings indicate that attitudes toward abortion are largely responsive and reflective of that context as well. PMID:25131281

  10. Abortion attitudes in context: a multidimensional vignette approach.

    PubMed

    Hans, Jason D; Kimberly, Claire

    2014-11-01

    The effects of relationship status, rationale for considering abortion (life circumstance versus health issue), and the male partner's wishes on abortion attitudes were examined using a multiple-segment factorial vignette with a probability sample of 532 Kentucky households. Respondents expressed strong opinions in the absence of contextual details, yet many shifted the direction of their strongly-held positions once contextual information was revealed that challenged their initial assumptions. Results confirm and extend prior research by indicating that attitudes are strongly held but are simultaneously highly responsive to context. The validity of surveys and polls that attempt to measure global attitudes toward abortion, such as pro-choice versus pro-life, in the absence of contextual details is therefore questioned. The full context of one's life and situation is weighed in the abortion decision-making process, and our findings indicate that attitudes toward abortion are largely responsive and reflective of that context as well.

  11. Attitudes toward the level of men's involvement in abortion decisions.

    PubMed

    Nelson, E S; Coleman, P K; Swager, M J

    1997-06-01

    College students completed a questionnaire that assessed their attitudes toward the level of male responsibility in abortion decisions. Overall, both men and women thought that men should have some degree of involvement in the abortion decision. However, as expected by the first hypothesis, men indicated a desire for more responsibility in the abortion decision than women thought the men should have. A second hypothesis predicted women would feel more strongly than men that abortion was strictly a woman's issue. Contrary to the hypothesis, women tended to disagree that abortion was strictly a women's issue. Implications of the findings are discussed. PMID:12295943

  12. Abortion attitudes as determinants of perceptions regarding male involvement in abortion decisions.

    PubMed

    Coleman, P K; Nelson, E S

    1999-01-01

    Abortion decisions have a potentially meaningful effect on the lives of men. Previous research suggests that both men and women generally believe that men have the right to be involved in such decisions. However, very little research attention has been devoted to identifying individual difference correlates of discrepant levels of endorsement for male involvement in abortion decisions. The extent to which abortion attitudes (on a pro-choice to pro-life continuum), conceptualization of abortion as strictly a female issue, and interest in the issue operate as effective predictors of the appropriate level of male involvement in abortion decisions was examined in a sample of 1,387 college students. Results of a multiple regression analysis revealed that 44% of the variance in male involvement scores was explained by the predictor variables. PMID:9919847

  13. Launch Abort System Pathfinder Arrival

    NASA Video Gallery

    The Orion Launch Abort System, or LAS, pathfinder returned home to NASA Langley on Oct. 18 on its way to NASA's Kennedy Space Center. The hardware was built at Langley and was used in preparation f...

  14. Attitudes toward abortion among parents of children with cystic fibrosis.

    PubMed Central

    Wertz, D C; Rosenfield, J M; Janes, S R; Erbe, R W

    1991-01-01

    BACKGROUND: DNA prenatal diagnosis for cystic fibrosis (CF) has been available for parents of affected children since late 1985. METHODS: Using anonymous questionnaires, we surveyed 395 parents of children with CF at 12 New England CF centers with regard to 12 maternal or family situations and 11 fetal characteristics; 271 (68%) responded. RESULTS: The majority supported legal abortion in the first trimester for all 23 situations; 58% would abort for severe mental retardation (MR), 40% would abort for a genetic disorder leading to death before age five years, 41% for a child bedridden for life, 35% for moderate MR, 20% for CF and 17% for a severe incurable disorder starting at age 40 years. Few would abort for a disorder starting at age 60 years, for genetic susceptibility to alcoholism or for sex selection. Variables most strongly related to abortion for CF were attitudes of spouse, respondent's siblings, and CF doctor toward abortion for CF as well as infrequent attendance at religious services. CONCLUSIONS: Prenatal diagnosis may not reduce substantially the number of CF births to parents of CF children because most do not accept abortion for CF. PMID:1854017

  15. How Attitudes Toward Abortion are Changing

    ERIC Educational Resources Information Center

    Jones, Elise F.; Westoff, Charles F.

    1978-01-01

    Data were obtained from the 1975 National Fertility Study concerning the acceptability of abortion, based largely on reinterviews with respondents from the 1970 sample. Using these data, aggregate trends over time and patterns of change for individuals have been analyzed. (BB)

  16. Orion Launch Abort Vehicle Attitude Control Motor Testing

    NASA Technical Reports Server (NTRS)

    Murphy, Kelly J.; Brauckmann, Gregory J.; Paschal, Keith B.; Chan, David T.; Walker, Eric L.; Foley, Robert; Mayfield, David; Cross, Jared

    2011-01-01

    Current Orion Launch Abort Vehicle (LAV) configurations use an eight-jet, solid-fueled Attitude Control Motor (ACM) to provide required vehicle control for all proposed abort trajectories. Due to the forward position of the ACM on the LAV, it is necessary to assess the effects of jet-interactions (JI) between the various ACM nozzle plumes and the external flow along the outside surfaces of the vehicle. These JI-induced changes in flight control characteristics must be accounted for in developing ACM operations and LAV flight characteristics. A test program to generate jet interaction aerodynamic increment data for multiple LAV configurations was conducted in the NASA Ames and NASA Langley Unitary Plan Wind Tunnels from August 2007 through December 2009. Using cold air as the simulant gas, powered subscale models were used to generate interaction data at subsonic, transonic, and supersonic test conditions. This paper presents an overview of the complete ACM JI experimental test program for Orion LAV configurations, highlighting ACM system modeling, nozzle scaling assumptions, experimental test techniques, and data reduction methodologies. Lessons learned are discussed, and sample jet interaction data are shown. These data, in conjunction with computational predictions, were used to create the ACM JI increments for all relevant flight databases.

  17. Correlates of Social Work Students' Abortion Knowledge and Attitudes: Implications for Education and Research.

    PubMed

    Begun, Stephanie; Bird, Melissa; Ramseyer Winter, Virginia; Massey Combs, Katie; McKay, Kimberly

    2016-07-01

    Researchers have established that individuals' abortion knowledge is positively associated with their support of abortion rights. However, social workers' personal beliefs regarding abortion are under-researched, even though social workers are often employed in health promotion and education roles in which the topic of abortion is encountered. The current study examines the results of a nationwide survey of social work students (N = 504) and explores the relationship between social work students' abortion knowledge and abortion attitudes. Less abortion knowledge was significantly associated with antichoice attitude endorsement. Implications for social work research, training, and education are subsequently discussed.

  18. Correlates of Social Work Students' Abortion Knowledge and Attitudes: Implications for Education and Research.

    PubMed

    Begun, Stephanie; Bird, Melissa; Ramseyer Winter, Virginia; Massey Combs, Katie; McKay, Kimberly

    2016-07-01

    Researchers have established that individuals' abortion knowledge is positively associated with their support of abortion rights. However, social workers' personal beliefs regarding abortion are under-researched, even though social workers are often employed in health promotion and education roles in which the topic of abortion is encountered. The current study examines the results of a nationwide survey of social work students (N = 504) and explores the relationship between social work students' abortion knowledge and abortion attitudes. Less abortion knowledge was significantly associated with antichoice attitude endorsement. Implications for social work research, training, and education are subsequently discussed. PMID:27092856

  19. The impact of religiosity on race variations in abortion attitudes.

    PubMed

    Gay, D; Lynxwiler, J

    1999-01-01

    This research examines the impact of religiosity and race on the abortion attitudes of African and White Americans. Data from the 1990, 1991, 1993, 1994 and 1996 years of the General Social Survey were used in the logical regression analysis. These surveys contain items that measure attitudes towards abortion, religious affiliation, public religious participation, and theological conservatism. In contrast to previous research, the findings indicated that African Americans are significantly more pro-choice than White Americans when measures of church attendance and Biblical literalism are included. The pro-choice stance of African Americans is grounded in the African American Protestants' social gospel and the critical role that religion plays in shaping members' attitudes. The ministries of the African American church have constantly adjusted and adapted to the needs and lifestyles of their members, and many of their religious leaders combined the principles of Christianity with tolerance for civil liberties. As a result African American attenders and Biblical literalists possess attitudes toward legal abortion that reflect more liberal sociopolitical outlooks concerning individual rights. PMID:12349298

  20. Women's knowledge and attitudes surrounding abortion in Zambia: a cross-sectional survey across three provinces

    PubMed Central

    Cresswell, Jenny A; Schroeder, Rosalyn; Dennis, Mardieh; Owolabi, Onikepe; Vwalika, Bellington; Musheke, Maurice; Campbell, Oona; Filippi, Veronique

    2016-01-01

    Objectives In Zambia, despite a relatively liberal legal framework, there remains a substantial burden of unsafe abortion. Many women do not use skilled providers in a well-equipped setting, even where these are available. The aim of this study was to describe women's knowledge of the law relating to abortion and attitudes towards abortion in Zambia. Setting Community-based survey in Central, Copperbelt and Lusaka provinces. Participants 1484 women of reproductive age (15–44 years). Primary and secondary outcome measures Correct knowledge of the legal grounds for abortion, attitudes towards abortion services and the previous abortions of friends, family or other confidants. Descriptive statistics and multivariable logistic regression were used to analyse how knowledge and attitudes varied according to sociodemographic characteristics. Results Overall, just 16% (95% CI 11% to 21%) of women of reproductive age correctly identified the grounds for which abortion is legal. Only 40% (95% CI 32% to 45% of women of reproductive age knew that abortion was legally permitted in the extreme situation where the pregnancy threatens the life of the mother. Even in urban areas of Lusaka province, only 55% (95% CI 41% to 67%) of women knew that an abortion could legally take place to save the mother's life. Attitudes remain conservative. Women with correct knowledge of abortion law in Zambia tended to have more liberal attitudes towards abortion and access to safe abortion services. Neither correct knowledge of the law nor attitudes towards abortion were associated with knowing someone who previously had an induced abortion. Conclusions Poor knowledge and conservative attitudes are important obstacles to accessing safe abortion services. Changing knowledge and attitudes can be challenging for policymakers and public health practitioners alike. Zambia could draw on its previous experience in dealing with its large HIV epidemic to learn cross-cutting lessons in effective mass

  1. Matters of life and death: social, political, and religious correlates of attitudes on abortion.

    PubMed

    Baker, Ross K; Epstein, Laurily K; Forth, Rodney D

    1981-01-01

    This article investigates the structure of attitudes toward abortion using several demographic, political, and religious variables. The analysis is based on a 1978 survey of New Jersey's voting age population. Responses to questions on 3 aspects of the abortion issue--a constitutional ban on abortion, abortion on demand, and government funding of abortions--are combined to form a scale of support and opposition to abortion. We find that support for abortion is related to youth, high socioeconomic status, a liberal ideology, opposition to right-to-die legislation, and support for the Equal Rights Amendment. Additionally, we find that approval for abortion is not a function of religious preference. Rather, attitudes on abortion are a function of intensity of religious adherence, regardless of specific religion.

  2. Orion Launch Abort System (LAS) Propulsion on Pad Abort 1 (PA-1)

    NASA Technical Reports Server (NTRS)

    Jones, Daniel S.

    2015-01-01

    This presentation provides a concise overview of the highly successful Orion Pad Abort 1 (PA-1) flight test, and the three rocket motors that contributed to this success. The primary purpose of the Orion PA-1 flight was to help certify the Orion Launch Abort System (LAS), which can be utilized in the unlikely event of an emergency on the launchpad or during mission vehicle ascent. The PA-1 test was the first fully integrated flight test of the Orion LAS, one of the primary systems within the Orion Multi-Purpose Crew Vehicle (MPCV). The Orion MPCV is part of the architecture within the Space Launch System (SLS), which is being designed to transport astronauts beyond low-Earth orbit for future exploration missions. Had the Orion PA-1 flight abort occurred during launch preparations for a real human spaceflight mission, the PA-1 LAS would have saved the lives of the crew. The PA-1 flight test was largely successful due to the three solid rocket motors of the LAS: the Attitude Control Motor (ACM); the Jettison Motor (JM); and the Abort Motor (AM). All three rocket motors successfully performed their required functions during the Orion PA-1 flight test, flown on May 6, 2010 at the White Sands Missile Range in New Mexico, culminating in a successful demonstration of an abort capability from the launchpad.

  3. Protest Motherhood: Pregnancy Decision-Making Behavior and Attitudes Towards Abortion.

    ERIC Educational Resources Information Center

    Chesney-Lind, Meda

    The document describes research on womens' attitudes toward abortion and their decision-making when pregnant leading to either birth or abortion. The objective was "to explore how womens' perceptions of the option of legal abortion have affected their pregnancy decision-making behavior" and to note the impact of their particular choices on their…

  4. Abortion Research: Attitudes, Sexual Behavior, and Problems in a Community College Population.

    ERIC Educational Resources Information Center

    Bryan, Janice Westlund; Freed, Florence Wallach

    1993-01-01

    Surveys of 70 male and 80 female community college students about their attitudes toward abortion, sexual behavior, and life problems support abortion rights. Antiabortion students were more religious, less sexually active, and less likely to know someone who had an abortion. Many students currently experienced serious problems. (SLD)

  5. Integrated Flight Performance Analysis of a Launch Abort System Concept

    NASA Technical Reports Server (NTRS)

    Tartabini, Paul V.

    2007-01-01

    This paper describes initial flight performance analyses conducted early in the Orion Project to support concept feasibility studies for the Crew Exploration Vehicle s Launch Abort System (LAS). Key performance requirements that significantly affect abort capability are presented. These requirements have implications on sizing the Abort Motor, tailoring its thrust profile to meet escape requirements for both launch pad and high drag/high dynamic pressure ascent aborts. Additional performance considerations are provided for the Attitude Control Motor, a key element of the Orion LAS design that eliminates the need for ballast and provides performance robustness over a passive control approach. Finally, performance of the LAS jettison function is discussed, along with implications on Jettison Motor sizing and the timing of the jettison event during a nominal mission. These studies provide an initial understanding of LAS performance that will continue to evolve as the Orion design is matured.

  6. Orion Launch Abort System Performance During Exploration Flight Test 1

    NASA Technical Reports Server (NTRS)

    McCauley, Rachel; Davidson, John; Gonzalez, Guillo

    2015-01-01

    The Orion Launch Abort System Office is taking part in flight testing to enable certification that the system is capable of delivering the astronauts aboard the Orion Crew Module to a safe environment during both nominal and abort conditions. Orion is a NASA program, Exploration Flight Test 1 is managed and led by the Orion prime contractor, Lockheed Martin, and launched on a United Launch Alliance Delta IV Heavy rocket. Although the Launch Abort System Office has tested the critical systems to the Launch Abort System jettison event on the ground, the launch environment cannot be replicated completely on Earth. During Exploration Flight Test 1, the Launch Abort System was to verify the function of the jettison motor to separate the Launch Abort System from the crew module so it can continue on with the mission. Exploration Flight Test 1 was successfully flown on December 5, 2014 from Cape Canaveral Air Force Station's Space Launch Complex 37. This was the first flight test of the Launch Abort System preforming Orion nominal flight mission critical objectives. The abort motor and attitude control motors were inert for Exploration Flight Test 1, since the mission did not require abort capabilities. Exploration Flight Test 1 provides critical data that enable engineering to improve Orion's design and reduce risk for the astronauts it will protect as NASA continues to move forward on its human journey to Mars. The Exploration Flight Test 1 separation event occurred at six minutes and twenty seconds after liftoff. The separation of the Launch Abort System jettison occurs once Orion is safely through the most dynamic portion of the launch. This paper will present a brief overview of the objectives of the Launch Abort System during a nominal Orion flight. Secondly, the paper will present the performance of the Launch Abort System at it fulfilled those objectives. The lessons learned from Exploration Flight Test 1 and the other Flight Test Vehicles will certainly

  7. J-2X Abort System Development

    NASA Technical Reports Server (NTRS)

    Santi, Louis M.; Butas, John P.; Aguilar, Robert B.; Sowers, Thomas S.

    2008-01-01

    The J-2X is an expendable liquid hydrogen (LH2)/liquid oxygen (LOX) gas generator cycle rocket engine that is currently being designed as the primary upper stage propulsion element for the new NASA Ares vehicle family. The J-2X engine will contain abort logic that functions as an integral component of the Ares vehicle abort system. This system is responsible for detecting and responding to conditions indicative of impending Loss of Mission (LOM), Loss of Vehicle (LOV), and/or catastrophic Loss of Crew (LOC) failure events. As an earth orbit ascent phase engine, the J-2X is a high power density propulsion element with non-negligible risk of fast propagation rate failures that can quickly lead to LOM, LOV, and/or LOC events. Aggressive reliability requirements for manned Ares missions and the risk of fast propagating J-2X failures dictate the need for on-engine abort condition monitoring and autonomous response capability as well as traditional abort agents such as the vehicle computer, flight crew, and ground control not located on the engine. This paper describes the baseline J-2X abort subsystem concept of operations, as well as the development process for this subsystem. A strategy that leverages heritage system experience and responds to an evolving engine design as well as J-2X specific test data to support abort system development is described. The utilization of performance and failure simulation models to support abort system sensor selection, failure detectability and discrimination studies, decision threshold definition, and abort system performance verification and validation is outlined. The basis for abort false positive and false negative performance constraints is described. Development challenges associated with information shortfalls in the design cycle, abort condition coverage and response assessment, engine-vehicle interface definition, and abort system performance verification and validation are also discussed.

  8. Abortion in Iranian legal system: a review.

    PubMed

    Abbasi, Mahmoud; Shamsi Gooshki, Ehsan; Allahbedashti, Neda

    2014-02-01

    Abortion traditionally means, "to miscarry" and is still known as a problem which societies has been trying to reduce its rate by using legal means. Despite the pregnant women and fetuses have being historically supported; abortion was firstly criminalized in 1926 in Iran, 20 years after establishment of modern legal system. During next 53 years this situation changed dramatically, so in 1979, the time of Islamic Revolution, aborting fetuses before 12 weeks and therapeutic abortion (TA) during all the pregnancy length was legitimate, based on regulations that used medical justification. After 1979 the situation changed into a totally conservative and restrictive approach and new Islamic concepts as "Blood Money" and "Ensoulment" entered the legal debates around abortion. During the next 33 years, again a trend of decriminalization for the act of abortion has been continuing. Reduction of punishments and omitting retaliation for criminal abortions, recognizing fetal and maternal medical indications including some immunologic problems as legitimate reasons for aborting fetuses before 4 months and omitting the fathers' consent as a necessary condition for TA are among these changes. The start point for this decriminalization process was public and professional need, which was responded by religious government, firstly by issuing juristic rulings (Fatwas) as a non-official way, followed by ratification of "Therapeutic Abortion Act" (TAA) and other regulations as an official pathway. Here, we have reviewed this trend of decriminalization, the role of public and professional request in initiating such process and the rule-based language of TAA.

  9. Attitudes toward elective abortion: preliminary evidence of validity for the Personal Beliefs Scale.

    PubMed

    Embree, R A

    1998-06-01

    On the Personal Beliefs Scale of Embree and Embree item ratings obtained from 100 Midwestern undergraduates were used to classify participants into neutral, other, or second-order psychosomaticism mind-body belief types. Responses to a hypothetical abnormal pregnancy were used to measure attitude toward abortion (prochoice vs antichoice), meaning of abortion (not murder vs murder), and empathy for the unborn(low, moderate, or high). Values of chi 2 were statistically significant for students classified by mind-body belief type versus attitude toward abortion, and the meaning of abortion, but not for empathy for the unborn. PMID:9709528

  10. Attitudes of Catholic and Protestant clergy on euthanasia and abortion.

    PubMed

    Nagi, M H; Pugh, M D; Lazerine, N G

    1981-01-01

    The attitudes of a random sample of 614 Catholic and Protestant clergymen from the Cleveland area were analyzed in relation to the following: 1) acceptance of euthanasia; 2) the establishment of legal guidelines; and 3) the similarity between euthanasia and abortion. In general the clergy were not opposed to all forms of euthanasia. They tended to make strong distinctions between passive and active euthanasia. Active euthanasia was highly unacceptable to the clergy, but they viewed passive euthanasia more favorably. There was a definite ranking in priority of the different circumstances under which the termination of life-supporting techniques would be acceptable to the clergy. Also significant was the fact that they did not tend to evaluate the issues surrounding euthanasia completely from a spiritual, or sacred perspective. Both Protestants and Catholics tended to approve of passive euthanasia, but they highly disapproved of active euthanasia. Catholics were significantly more opposed to both forms of euthanasia. In general conservative Protestants were more opposed to passive euthanasia on most dimensions than were Catholics. Both Catholic and Protestant clergy showed fear that official approval of types of euthanasia would spread into abuses. Although spiritually oriented clergy tended to show somewhat less unfavorable views on euthanasia when compared with abortion, generally, appreciable differences or role types on this particular sub-dimension was lacking.

  11. Commercial Crew Program: Launch Abort Systems

    NASA Video Gallery

    NASA's work in the next generation of launch abort systems (LAS) is significantly different from past programs. Instead of designing a specific system for a given spacecraft or rocket, engineers ar...

  12. On abortion: exploring psychological meaning and attitudes in a sample of Mexican gynecologists.

    PubMed

    Marván, Ma Luisa; Álvarez del Río, Asunción; Campos, Zaira

    2014-04-01

    Elective abortion has become an issue of ethical and political debate in many countries including Mexico. As gynecologists are directly involved in the practice of abortion, it is important to know the psychological meaning that the term 'elective abortion' has for them. This study explores the psychological meaning and attitudes toward elective abortion of one hundred and twenty-three Mexican gynecologists. We used the semantic networks technique, which analyzed the words the participants associated with the term 'elective abortion'. The defining words most frequently used by participants implied a negative sanction. There were important differences by gender and religiosity: male gynecologists, as well as those with strong religious beliefs (mainly Catholics), revealed a more negative psychological meaning and more negative attitudes than females or physicians with weak religious beliefs. A contribution of the present study is that it highlights the importance of psychology to enhancing understanding of the issue of elective abortion.

  13. Attitudes towards abortion among trainees in obstetrics/gynecology and clinical genetics.

    PubMed

    Ingerslev, Marie Diness; Diness, Birgitte Rode; Norup, Michael

    2012-02-01

    This study aimed to provide knowledge about attitudes towards abortion among Danish physicians in training in the specialties of obstetrics/gynecology and clinical genetics. The study was a questionnaire survey among trainees in these specialties. Ninety-six responded. Trainees in clinical genetics were more pro-abortion than those in obstetrics/gynecology (p=0.04). Of the respondents, 30 versus 48% found working with early and late abortions unpleasant. Nearly half agreed that they had chosen their specialty despite having to counsel and treat women having abortions. Twenty-one percent agreed that working with late abortion affected their job satisfaction negatively. Those agreeing with the above statements had a tendency towards lower pro-abortion scores than those who were indifferent or who disagreed but the differences were not significant. A substantial fraction of physicians in training have negative feelings associated with abortion-related work and require support in handling and coping with these challenges. PMID:22043977

  14. Spiral Kicker for the beam abort system

    NASA Astrophysics Data System (ADS)

    Martin, R. L.

    The feasibility of a special kicker to produce a damped spiral beam at the beam dump for the beam abort system was determined. There appears to be no problem with realizing this concept at a reasonably low cost.

  15. 21 CFR 884.5050 - Metreurynter-balloon abortion system.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Metreurynter-balloon abortion system. 884.5050... Devices § 884.5050 Metreurynter-balloon abortion system. (a) Identification. A metreurynter-balloon abortion system is a device used to induce abortion. The device is inserted into the uterine...

  16. 21 CFR 884.5050 - Metreurynter-balloon abortion system.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Metreurynter-balloon abortion system. 884.5050... Devices § 884.5050 Metreurynter-balloon abortion system. (a) Identification. A metreurynter-balloon abortion system is a device used to induce abortion. The device is inserted into the uterine...

  17. 21 CFR 884.5050 - Metreurynter-balloon abortion system.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Metreurynter-balloon abortion system. 884.5050... Devices § 884.5050 Metreurynter-balloon abortion system. (a) Identification. A metreurynter-balloon abortion system is a device used to induce abortion. The device is inserted into the uterine...

  18. 21 CFR 884.5050 - Metreurynter-balloon abortion system.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Metreurynter-balloon abortion system. 884.5050... Devices § 884.5050 Metreurynter-balloon abortion system. (a) Identification. A metreurynter-balloon abortion system is a device used to induce abortion. The device is inserted into the uterine...

  19. A qualitative investigation of low-income abortion clients' attitudes toward public funding for abortion.

    PubMed

    Nickerson, Adrianne; Manski, Ruth; Dennis, Amanda

    2014-01-01

    We explored how low-income abortion clients in states where public funding was and was not available perceived the role of public funding for abortion. From October 2010 through February 2011, we conducted 71 semi-structured in-depth telephone interviews with low-income abortion clients in Arizona, Florida, New York, and Oregon. Women reported weighing numerous factors when determining which circumstances warranted public funding. Though most women generally supported coverage, they deviated from their initial support when asked about particular circumstances. Respondents felt most strongly that abortion should not be covered when a woman could not afford another child or was pregnant outside of a romantic relationship. Participants used disparaging language to describe the presumed behavior of women faced with unintended pregnancies. In seeking to discredit "other" women's abortions, women revealed the complex nature of abortion stigma. We propose that women's abortion experiences and subsequent opinions on coverage indicated three distinct manifestations of abortion stigma: women (1) resisted the prominent discourse that marks women who have had abortions as selfish and irresponsible; (2) internalized societal norms that stereotype women based on the circumstances surrounding the abortion; and (3) reproduced stigma by distancing themselves from the negative stereotypes associated with women who have had abortions. PMID:25068780

  20. Abortion

    MedlinePlus

    An abortion is a procedure to end a pregnancy. It uses medicine or surgery to remove the embryo or ... personal. If you are thinking of having an abortion, most healthcare providers advise counseling.

  1. Attitudes to abortion in the era of reform: evidence from the Abortion Law Reform Association correspondence.

    PubMed

    Jones, Emma L

    2011-01-01

    This article examines letters sent by members of the general public to the Abortion Law Reform Association (ALRA) in the decade immediately before the 1967 Abortion Act. It shows how a voluntary organisation, in their aim of supporting a specific cause of unclear legality, called forth correspondence from those in need. In detailing the personal predicaments of those facing an unwanted pregnancy, this body of correspondence was readily deployed by ALRA in their efforts to mobilise support for abortion law reform, thus exercising a political function. A close examination of the content of the letters and the epistolary strategies adopted by their writers reveals that as much as they were a lobbying tool for changes in abortion law, these letters were discursively shaped by debates surrounding that very reform.

  2. Orion Launch Abort System Performance on Exploration Flight Test 1

    NASA Technical Reports Server (NTRS)

    McCauley, R.; Davidson, J.; Gonzalez, Guillermo

    2015-01-01

    This paper will present an overview of the flight test objectives and performance of the Orion Launch Abort System during Exploration Flight Test-1. Exploration Flight Test-1, the first flight test of the Orion spacecraft, was managed and led by the Orion prime contractor, Lockheed Martin, and launched atop a United Launch Alliance Delta IV Heavy rocket. This flight test was a two-orbit, high-apogee, high-energy entry, low-inclination test mission used to validate and test systems critical to crew safety. This test included the first flight test of the Launch Abort System preforming Orion nominal flight mission critical objectives. NASA is currently designing and testing the Orion Multi-Purpose Crew Vehicle (MPCV). Orion will serve as NASA's new exploration vehicle to carry astronauts to deep space destinations and safely return them to earth. The Orion spacecraft is composed of four main elements: the Launch Abort System, the Crew Module, the Service Module, and the Spacecraft Adapter (Fig. 1). The Launch Abort System (LAS) provides two functions; during nominal launches, the LAS provides protection for the Crew Module from atmospheric loads and heating during first stage flight and during emergencies provides a reliable abort capability for aborts that occur within the atmosphere. The Orion Launch Abort System (LAS) consists of an Abort Motor to provide the abort separation from the Launch Vehicle, an Attitude Control Motor to provide attitude and rate control, and a Jettison Motor for crew module to LAS separation (Fig. 2). The jettison motor is used during a nominal launch to separate the LAS from the Launch Vehicle (LV) early in the flight of the second stage when it is no longer needed for aborts and at the end of an LAS abort sequence to enable deployment of the crew module's Landing Recovery System. The LAS also provides a Boost Protective Cover fairing that shields the crew module from debris and the aero-thermal environment during ascent. Although the

  3. A Proposed Ascent Abort Flight Test for the Max Launch Abort System

    NASA Technical Reports Server (NTRS)

    Tartabini, Paul V.; Gilbert, Michael G.; Starr, Brett R.

    2016-01-01

    The NASA Engineering and Safety Center initiated the Max Launch Abort System (MLAS) Project to investigate alternate crew escape system concepts that eliminate the conventional launch escape tower by integrating the escape system into an aerodynamic fairing that fully encapsulates the crew capsule and smoothly integrates with the launch vehicle. This paper proposes an ascent abort flight test for an all-propulsive towerless escape system concept that is actively controlled and sized to accommodate the Orion Crew Module. The goal of the flight test is to demonstrate a high dynamic pressure escape and to characterize jet interaction effects during operation of the attitude control thrusters at transonic and supersonic conditions. The flight-test vehicle is delivered to the required test conditions by a booster configuration selected to meet cost, manufacturability, and operability objectives. Data return is augmented through judicious design of the boost trajectory, which is optimized to obtain data at a range of relevant points, rather than just a single flight condition. Secondary flight objectives are included after the escape to obtain aerodynamic damping data for the crew module and to perform a high-altitude contingency deployment of the drogue parachutes. Both 3- and 6-degree-of-freedom trajectory simulation results are presented that establish concept feasibility, and a Monte Carlo uncertainty assessment is performed to provide confidence that test objectives can be met.

  4. [Abortion].

    PubMed

    Dourlen-rollier, A M

    1971-01-01

    The historical and current (1969) abortion laws in France as well as those in other Western countries are analyzed. France has had a series of punitive abortion codes since the Napoleonic Code of 1810 prescribing solitary confinement for the woman. The reforms of 1920 and 1923 made provocation of abortion or contraceptional propaganda a "crime" (felony), later a "delit" (misdemeanor), called for trial before magistr ate instead of jury, but resulted in only about 200 convictions a year. The decree of 1939 extended the misdemeanor to women who aborted even if they were not pregnant, and provided for professional licenses such as that of surgeon or pharmacist to be suspended. The law of 1942 made abortion a social crime and increased the maximum penalty to capital punishment, which was exercised in 2 cases. About 4000 per year were convicted from 1942-1944. Now the law still applies to all who intend to abort, whether or not pregnant or successful, but punishemnt is limited to 1-5 years imprisonment, and 72,000 francs fine, or suspension of medical practice for 5 years. About 500 have been convicted per year. Since 1955 legal abortion has been available (to about 130 women over 4 years) if it is the only means to save the woman's life. Although pregnancy tests are controlled, the population desregards the law by resorting to clandestine abortion. The wealthy travel to Switzerland (where 68% of legal abortions are done on French women) or to England. Numbers are estimated by the French government at 250,000-300,000 per year, or 1 for every 2 live births, but by hospital statistics at 400,000-1,000,000 per year. The rest of the review covers abortion laws in Scandinavian, Central European, and individual US states as of 1969.

  5. 21 CFR 884.5070 - Vacuum abortion system.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Vacuum abortion system. 884.5070 Section 884.5070... § 884.5070 Vacuum abortion system. (a) Identification. A vacuum abortion system is a device designed to... type of device may include aspiration cannula, vacuum source, and vacuum controller. (b)...

  6. 21 CFR 884.5070 - Vacuum abortion system.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Vacuum abortion system. 884.5070 Section 884.5070... § 884.5070 Vacuum abortion system. (a) Identification. A vacuum abortion system is a device designed to... type of device may include aspiration cannula, vacuum source, and vacuum controller. (b)...

  7. 21 CFR 884.5070 - Vacuum abortion system.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Vacuum abortion system. 884.5070 Section 884.5070... § 884.5070 Vacuum abortion system. (a) Identification. A vacuum abortion system is a device designed to... type of device may include aspiration cannula, vacuum source, and vacuum controller. (b)...

  8. 21 CFR 884.5070 - Vacuum abortion system.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Vacuum abortion system. 884.5070 Section 884.5070... § 884.5070 Vacuum abortion system. (a) Identification. A vacuum abortion system is a device designed to... type of device may include aspiration cannula, vacuum source, and vacuum controller. (b)...

  9. 21 CFR 884.5070 - Vacuum abortion system.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Vacuum abortion system. 884.5070 Section 884.5070... § 884.5070 Vacuum abortion system. (a) Identification. A vacuum abortion system is a device designed to... type of device may include aspiration cannula, vacuum source, and vacuum controller. (b)...

  10. Personal Beliefs and Professional Responsibilities: Ethiopian Midwives' Attitudes toward Providing Abortion Services after Legal Reform.

    PubMed

    Holcombe, Sarah Jane; Berhe, Aster; Cherie, Amsale

    2015-03-01

    In 2005, Ethiopia liberalized its abortion law and subsequently authorized midwives to offer abortion services. Using a 2013 survey of 188 midwives and 12 interviews with third-year midwifery students, this cross-sectional research examines midwives' attitudes toward abortion to understand their decisions about service provision. Most midwives were willing to provide abortion services. This willingness was positively and significantly related to clinical experience with abortion, but negatively and significantly related to religiosity, belief that providers have the right to refuse to provide services, and care of patients from periurban as opposed to rural areas. No significant relationship was found with perceptions of abortion stigma, years of work as a midwife, or knowledge of the law. Interview data suggest complex dynamics underlying midwives' willingness to offer services, including conflicts between professional norms and religious beliefs. Findings can inform Ethiopia's efforts to reduce maternal mortality through task-shifting to midwives and can aid other countries that are confronting provider shortages and high levels of maternal mortality and morbidity, particularly due to unsafe abortion.

  11. Attitudes towards abortion among physicians working at obstetrical and paediatric departments in Denmark.

    PubMed

    Norup, M

    1998-03-01

    The purpose of this study was to describe the attitudes among physicians working in perinatal medicine towards abortion for social reasons or because of abnormal prenatal diagnostic results. A questionnaire was sent to all physicians registered as employed at obstetrical or paediatric departments in Danish hospitals with a neonatal function. Of 994 questionnaires, 687 (69 per cent) were completed and returned. There was strong consensus among all participants that abortion is acceptable until week 21 in the case of trisomy 13 and at least until week 19 in the case of cystic fibrosis. Furthermore, there was strong consensus that abortion in the first trimester is acceptable in the case of an unwanted pregnancy in a 16-year-old girl and in the case of Down syndrome. Major controversy was found in connection with abortion in the case of Turner syndrome until week 21, abortion in week 13 in the case of polycystic kidney disease, abortion in week 24 in the case of Down syndrome, and abortion for social reasons in week 21.

  12. Abortion of Defective Fetuses: Attitudes of Mothers of Congenitally Impaired Children.

    ERIC Educational Resources Information Center

    Breslau, Naomi

    1987-01-01

    Compared a sample of mothers of children with cystic fibrosis, cerebral palsy, myelodysplasia, and multiple physical handicaps with a probability sample of mothers of children free of disabilities on their attitudes toward the availability of legal abortion. The responses were not distinguishable for the two groups, nor was the specific disability…

  13. Community attitudes toward childbearing and abortion among HIV-positive women in Nigeria and Zambia

    PubMed Central

    Moore, Ann M.; Akinyemi, Odunayo; Adewole, Isaac; Dzekedzeke, Kumbutso; Awolude, Olutosin; Arulogun, Oyedunni

    2012-01-01

    Although stigma towards HIV-positive women for both continuing and terminating a pregnancy has been documented, to date few studies have examined relative stigma towards one outcome versus the other. This study seeks to describe community attitudes towards each of two possible elective outcome of an HIV-positive woman’s pregnancy – induced abortion or birth – to determine which garners more stigma and document characteristics of community members associated with stigmatising attitudes towards each outcome. Data come from community-based interviews with reproductive-aged men and women, 2401 in Zambia and 2452 in Nigeria. Bivariate and multivariate analyses revealed that respondents from both countries overwhelmingly favoured continued childbearing for HIV-positive pregnant women, but support for induced abortion was slightly higher in scenarios in which anti-retroviral therapy (ART) was unavailable. Zambian respondents held more stigmatising attitudes towards abortion for HIV-positive women than did Nigerian respondents. Women held more stigmatising attitudes towards abortion for HIV-positive women than men, particularly in Zambia. From a sexual and reproductive health and rights perspective, efforts to assist HIV-positive women in preventing unintended pregnancy and to support them in their pregnancy decisions when they do become pregnant should be encouraged in order to combat the social stigma documented in this paper. PMID:23173695

  14. Life Ownership Orientation and Attitudes toward Abortion, Suicide, Doctor-Assisted Suicide, and Capital Punishment.

    ERIC Educational Resources Information Center

    Ross, Lisa Thomson; Kaplan, Kalman J.

    1994-01-01

    Examined life ownership orientation (extent to which one believes that God, individual, or society has power over one's life) among 117 college students who completed Life Ownership Orientation Questionnaire (LOOQ). Found LOOQ scores demonstrated higher predictive validity with regard to attitudes toward abortion, suicide, doctor-assisted suicide,…

  15. Two-Dimensional Scalogram Analysis: Analyzing the Scalability of Attitudes toward Abortion.

    ERIC Educational Resources Information Center

    Dancer, L. Suzanne

    The usefulness of L. Guttman's partial order scalogram analysis is investigated in this study of the structure of a set of items that measure attitudes toward legal abortion. These items, drawn from the National Opinion Research Center's "General Social Survey," have been the focus of considerable applied research investigating predictors of…

  16. Abortion research: attitudes, sexual behavior, and problems in a community college population.

    PubMed

    Bryan, J W; Freed, F W

    1993-02-01

    150 (80 females and 70 males) community college students were surveyed regarding their attitudes toward abortion, their sexual behavior, and their problems. The profile of the students was Caucasian (95%), young (18-24 years = 87%), single (87%), middle and lower middle class, and Catholic (70%). 82% supported abortion choice, 86% had engaged in premarital sex, 70% used contraception, and 26% had premarital pregnancies. The hard reasons for abortion (rape, the woman's life, is endangered, and the fetus is defective) received high support. The soft reasons (the family cannot afford more children or the woman does not want to marry the man) received lower support. The students were divided into 3 groups of 50 students based on the number of abortion reasons they supported out of 43 reasons. The low-group that accepted 0-10 reasons was called anti-abortion. 50% of them still believed a woman has a right to an abortion vs. 97% of the pro-abortion students. The students reported many problems in their families: alcoholic home (39%), loss of a parent through death, divorce, or separation (33%), victims of severe corporal punishment (31%), one or more family members physically abused (20%), and deprived of parental affection while growing up (20%). When the anti-abortion females (N=30) were compared with the pro-abortion females (N=50), they reported significantly (p.01) more hospitalization, a greater number of physical handicaps, and more shyness (p.1). When the anti-abortion males (N=20) were compared with the pro-abortion males (N=50), they reported significantly more obesity and agoraphobia (p.05) and more convictions for a crime (p.1). Comparison of women who had abortion (N=13) with the women who had their baby (N=8) indicated that the latter reported significantly (p.01) more battering by their boyfriend or husband, significantly (p.05) more battering in their family of origin and childhood sexual abuse, and a greater tendency (p.1) to have been raped.

  17. Benevolent Sexism, Attitudes Toward Motherhood, and Reproductive Rights: A Multi-Study Longitudinal Examination of Abortion Attitudes.

    PubMed

    Huang, Yanshu; Davies, Paul G; Sibley, Chris G; Osborne, Danny

    2016-07-01

    Although Benevolent Sexism (BS)-an ideology that highly reveres women who conform to traditional gender roles-is cloaked in a superficially positive tone, being placed upon a pedestal is inherently restrictive. Accordingly, because the paternalistic beliefs associated with BS are based on the idealization of traditional gender roles (which include motherhood), BS should predict people's attitudes toward women's reproductive rights. Using data from a nationwide longitudinal panel study (N = 12,299), Study 1 showed that BS (but not Hostile Sexism) had cross-lagged effects on opposition to both elective and traumatic abortion. Study 2 (N = 309) extended these findings by showing that the relationship between BS and support for abortion was fully mediated by attitudes toward motherhood. These results highlight the pernicious nature of BS by demonstrating that the idealization of women-and motherhood, in particular-comes at a substantial cost (namely, the restriction of women's reproductive rights).

  18. Benevolent Sexism, Attitudes Toward Motherhood, and Reproductive Rights: A Multi-Study Longitudinal Examination of Abortion Attitudes.

    PubMed

    Huang, Yanshu; Davies, Paul G; Sibley, Chris G; Osborne, Danny

    2016-07-01

    Although Benevolent Sexism (BS)-an ideology that highly reveres women who conform to traditional gender roles-is cloaked in a superficially positive tone, being placed upon a pedestal is inherently restrictive. Accordingly, because the paternalistic beliefs associated with BS are based on the idealization of traditional gender roles (which include motherhood), BS should predict people's attitudes toward women's reproductive rights. Using data from a nationwide longitudinal panel study (N = 12,299), Study 1 showed that BS (but not Hostile Sexism) had cross-lagged effects on opposition to both elective and traumatic abortion. Study 2 (N = 309) extended these findings by showing that the relationship between BS and support for abortion was fully mediated by attitudes toward motherhood. These results highlight the pernicious nature of BS by demonstrating that the idealization of women-and motherhood, in particular-comes at a substantial cost (namely, the restriction of women's reproductive rights). PMID:27226340

  19. Abortion.

    PubMed

    Hume, K

    1979-04-21

    The review by Aileen F. Connon of Abortion by Potts, Diggory and Peel (Journal, February 10) made interesting reading, especially her quotation of the "facinating statistical information" that Australia has 11.5 million people and 45,000 to 90,000 criminal abortions a year. These are rather wide upper and lower confidence limits. One wonders what other information the authors have included that is of the same standard of accuracy. On the other hand, Malcolm Potts told me some years ago that the experience of his parent organization, the International Planned Parenthood Federation, with the IUD in India was a disaster. That I could well believe. Seeing some of the victims, the sight would indeed be enough to stir the stony heart of the most inhuman consultant gynaecologist. There is in Australia, and indeed in the world, an increasing number of doctors who are revolted by the activities of the International Planned Parenthood Federation and its affiliates which aggressively promote abortion as "an acceptable method of fertility control," and even as the primary method. These are a cross-section of the profession and include some of its most distinguished and erudite members who would be both competent and happy to review a book such as Abortion by Potts et alii from a pro-life point of view. Could I suggest that in future your book reviews and editorials include some well informed commentaries from doctors representing that heretofore silent group? I am holding a long and growing list of Australian doctors who have signed the "Declaration of Doctors," thus explicitly spelling out their respect for human life from the first moment of biological existence to that of natural death. Their services are available on request.

  20. Abortion.

    PubMed

    Churchill, M

    1979-09-15

    I would like to take issue with Dr Colin Brewer's statements concerning intrauterine contraceptive devices and abortion (11 August, p 389). I agree that logically there is no distinction between IUCDs, and other abortifacients used early in pregnancy, and abortion methods used later in pregnancy. However, I disagree with his statement that to make illegal IUCDs and similar methods out of an "obsessive concern for microscopic forms of life" would be "absurd." Firstly, size has never been a criterion for the presence or absence of life, or of its importance. Surely Dr Brewer, MPs, and the public would be outraged by anything less than obsessively careful handling of, say, rabies or smallpox viruses in laboratories. Do not the products of conception, with the full potential of a human being unless actively interfered with by other men (neglecting normal fetal wastage), deserve any less concern? Secondly, mortality should not be determined by practicalities; rather morality should determine one's actions. The question of whether IUCDs and other such procedures should remain legal or be made illegal should not be determined by their efficacy, popularity, or economy. I agree fully with Dr Brewer--abortion is a moral issue and it is a pity that the BMF has not raised the moral issues at stake. Particularly so, as Lord Denning put it "...without morality there can be no law." I personally subscribe to the Hippocratic Oath. PMID:497769

  1. The PEP-II abort kicker system

    SciTech Connect

    Lamare, J de; Donaldson, A.; Kulikov, A. Lipari, J.

    1997-07-01

    The PEP-II project has two storage rings. The HER (High Energy Ring) has up to 1.48 A of electron beam at 9 GeV, and the LER (Low Energy Ring) has up to 2.14 A of positron beam at 3.1 GeV. To protect the HER and LER beam lines in the event of a ring component failure, each ring has an abort kicker system which directs the beam into a dump when a failure is detected. Due to the high current of the beams, the beam kick is tapered from 100% to 80% in 7.33 uS (the beam transit time around the time). This taper distributes the energy evenly across the window which separates the ring from the beam dump such that the window is not damaged. The abort kicker trigger is synchronized with the ion clearing gap of the beam allowing for the kicker field to rise from 0-80% in 370 nS. This report discusses the design of the system controls, interlocks, power supplies, and modulator.

  2. Full-Envelope Launch Abort System Performance Analysis Methodology

    NASA Technical Reports Server (NTRS)

    Aubuchon, Vanessa V.

    2014-01-01

    The implementation of a new dispersion methodology is described, which dis-perses abort initiation altitude or time along with all other Launch Abort System (LAS) parameters during Monte Carlo simulations. In contrast, the standard methodology assumes that an abort initiation condition is held constant (e.g., aborts initiated at altitude for Mach 1, altitude for maximum dynamic pressure, etc.) while dispersing other LAS parameters. The standard method results in large gaps in performance information due to the discrete nature of initiation conditions, while the full-envelope dispersion method provides a significantly more comprehensive assessment of LAS abort performance for the full launch vehicle ascent flight envelope and identifies performance "pinch-points" that may occur at flight conditions outside of those contained in the discrete set. The new method has significantly increased the fidelity of LAS abort simulations and confidence in the results.

  3. Developing a scale to measure stigmatizing attitudes and beliefs about women who have abortions: results from Ghana and Zambia.

    PubMed

    Shellenberg, Kristen M; Hessini, Leila; Levandowski, Brooke A

    2014-01-01

    The objective of this research was to explore the context of abortion stigma in Ghana and Zambia through qualitative research, and develop a quantitative instrument to measure stigmatizing attitudes and beliefs about abortion. Ultimately, we aimed to develop a scale to measure abortion stigma at the individual and community level that can also be used in the evaluation of stigma reduction interventions. Focus group discussions were conducted in both countries to provide information around attitudes and beliefs about abortion. A 57-item instrument was created from these data, pre-tested, and then administered to 531 individuals (n = 250 in Ghana and n = 281 in Zambia). Exploratory factor analyses were conducted on 33 of the original 57 items to identify a statistically and conceptually relevant scale. Items with factor loadings > 0.39 were retained. All analyses were completed using Stata IC/11.2. Exploratory factor analysis resulted in a three-factor solution that explained 53% of the variance in an 18-item instrument. The three identified subscales are: (i) negative stereotypes (eight items), (ii) discrimination and exclusion (seven items), and (iii) potential contagion (three items). Coefficient alphas of 0.85, 0.80, and 0.80 for the three subscales, and 0.90 for the full 18-item instrument provide evidence of internal consistency reliability. Our Stigmatizing Attitudes, Beliefs, and Actions scale captures three important dimensions of abortion stigma: negative stereotypes about men and women who are associated with abortion, discrimination/exclusion of women who have abortions, and fear of contagion as a result of coming in contact with a woman who has had an abortion. The development of this scale provides a validated tool for measuring stigmatizing attitudes and beliefs about abortion in Ghana and Zambia. Additionally, the scale has the potential to be applicable in other country settings. It represents an important contribution to the fields of reproductive

  4. [Abortion and rights. Legal thinking about abortion].

    PubMed

    Perez Duarte, A E

    1991-01-01

    Analysis of abortion in Mexico from a juridical perspective requires recognition that Mexico as a national community participates in a double system of values. Politically it is defined as a liberal, democratic, and secular state, but culturally the Judeo-Christian ideology is dominant in all social strata. This duality complicates all juridical-penal decisions regarding abortion. Public opinion on abortion is influenced on the 1 hand by extremely conservative groups who condemn abortion as homicide, and on the other hand by groups who demand legislative reform in congruence with characteristics that define the state: an attitude of tolerance toward the different ideological-moral positions that coexist in the country. The discussion concerns the rights of women to voluntary maternity, protection of health, and to making their own decisions regarding their bodies vs. the rights of the fetus to life. The type of analysis is not objective, and conclusions depend on the ideology of the analyst. Other elements must be examined for an objective consideration of the social problem of abortion. For example, aspects related to maternal morbidity and mortality and the demographic, economic, and physical and mental health of the population would all seem to support the democratic juridical doctrine that sees the clandestine nature of abortion as the principal problem. It is also observed that the illegality of abortion does not guarantee its elimination. Desperate women will seek abortion under any circumstances. The illegality of abortion also impedes health and educational policies that would lower abortion mortality. There are various problems from a strictly juridical perspective. A correct definition of the term abortion is needed that would coincide with the medical definition. The discussion must be clearly centered on the protected juridical right and the definition of reproductive and health rights and rights to their own bodies of women. The experiences of other

  5. Towards a causal model of childbearing and abortion attitudes in contemporary Japan.

    PubMed

    Ogawa, N; Hodge, R W

    1983-01-01

    Described in this paper is the rationale and thinking behind the development of a causal model of childbearing and abortion attitudes in contemporary Japan. This effort represents one of the 1st attempts to build a multiple equation, micro-level model of fertility and fertility related behavior and attitudes in Japan. The results are almost wholely consistent with received demographic theory. Japan has now reached the last stage of her demographic transition and the results are consistent with the view that social and economic differentials in fertility are gradually eroded over the course of the transition. There are still statistically significant residues of these differentials in contemporary Japan, but they are at best modest in scope. Fertility in modern Japan is largely a matter of age and personal desires. Even abortion, which was so instrumental in moving Japan through the middle stages of her demographic transition in the immediate postwar period, exhibits only weak relationships with the social and economic position of women; attitudes about abortion are even more weakly linked to the social order. In sum, as of 1981, the process of family formation appears to have evolved to the point where it is largely homogeneous with respect to social and economic status. The differentials which remain are the expected ones, but their magnitude is not overwhelming and the force of social location is at most only a modest constraint on fertility behavior and fertility related beliefs and attitudes. This is the exact scenario one expects to find in a nation which is at the final stage of its demographic transition. The present analysis is current and cross-sectional. It is largely exploratory and as such, represents one of the very 1st efforts to develop a structural equation model of individual fertility behavior in Japan. The findings are based on the analysis of the data gathered in Japan in connection with ESCAP Study on the Relationship Between Fertility Behavior

  6. Abortion.

    PubMed

    Rice-Oxley, C P

    1979-09-15

    Professor Peter Hungerford (25 August, p 496) says that he is fed up with semantic arguments about abortion which ignore reality. He then invokes two major fantasies of the last decade, those of sexual equality and the woman's right to choose. The second of these has become an article of faith to many pro-abortionists and its credentials should be examined. Whence does this right derive? A woman takes part in a more or less pleasurable activity with a man and then, without her volition, with no conscious effort on her part at all, the miraculous occurs and a new life comes into being. How does she have the right to destroy this new life? The argument is usually to the effect that it belongs to her and could not survive without her: "It's mine and I can do what I like with it." Of course, it is true that a fetus cannot survive without the support of its mother; no more could Professor Hungerford or I survive without the support of our fellow men who provide us with food, drink, and clothing, but that does not give them the right to kill us. The claim to possession, the assumption that the fetus is owned by its mother involves, I believe, a semantic error. In a sense, the fetus is "hers" in that it is growing inside her, even though she did not create it. Likewise, her husband is hers because joined to her by marriage and her country is hers because she lives there, although she does not own either of them and certainly has no right to destroy them. The life growing inside the mother is not hers in the same way that a cardigan she has bought or knitted for herself is hers. It is the consideration of semantics that protects us from the "realities" of such as Professor Hungerford.

  7. Flight Performance Feasibility Studies for the Max Launch Abort System

    NASA Technical Reports Server (NTRS)

    Tarabini, Paul V.; Gilbert, Michael G.; Beaty, James R.

    2013-01-01

    In 2007, the NASA Engineering and Safety Center (NESC) initiated the Max Launch Abort System Project to explore crew escape system concepts designed to be fully encapsulated within an aerodynamic fairing and smoothly integrated onto a launch vehicle. One objective of this design was to develop a more compact launch escape vehicle that eliminated the need for an escape tower, as was used in the Mercury and Apollo escape systems and what is planned for the Orion Multi-Purpose Crew Vehicle (MPCV). The benefits for the launch vehicle of eliminating a tower from the escape vehicle design include lower structural weights, reduced bending moments during atmospheric flight, and a decrease in induced aero-acoustic loads. This paper discusses the development of encapsulated, towerless launch escape vehicle concepts, especially as it pertains to the flight performance and systems analysis trade studies conducted to establish mission feasibility and assess system-level performance. Two different towerless escape vehicle designs are discussed in depth: one with allpropulsive control using liquid attitude control thrusters, and a second employing deployable aft swept grid fins to provide passive stability during coast. Simulation results are presented for a range of nominal and off-nominal escape conditions.

  8. 21 CFR 884.5050 - Metreurynter-balloon abortion system.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... cervical os. This generic type of device may include pressure sources and pressure controls. (b... equivalent to a metreurynter-balloon abortion system that was in commercial distribution before May 28,...

  9. Autonomous attitude determination systems

    NASA Technical Reports Server (NTRS)

    Lowrie, J. W.

    1979-01-01

    A summary of autonomous attitude determination systems is presented by separating it into four areas: types of attitude determination systems which can be automated, a description of the attitude determination problem and its solution, specific types of sensors, and the processor requirements of two automated systems. The sensors used in attitude determination have been characteristically carried on-board the spacecraft in the past, so the major development requirement of automated systems is in the area of on-board processors. It is concluded that standardization of computers is not as beneficial as the standardization of computer architecture and the basic components which go into making them. It is also concluded that charge-coupled devices (CCD) or other solid state star tracking devices offer considerable advantages over the image-dissector type of star tracker.

  10. Attitudes toward abortion for fetal anomaly in the second vs. the third trimester: a survey of Parisian obstetricians.

    PubMed

    Geller, G; Tambor, E S; Papiernik, E

    1993-08-01

    Cross-cultural differences exist in prenatal diagnosis and abortion for fetal anomaly, stemming from variations in laws, reimbursement policies, litigation, physicians' decision-making authority, and attitudes toward the prevention of handicaps. The first part of this paper discusses such differences in France and the U.S. The second part describes a survey of practising obstetricians in Paris, designed to assess (1) their attitudes toward pregnancy termination for various conditions, (2) their concern about fetal viability, (3) their desire for diagnostic certainty before justifying a late abortion, and (4) their perceived role in such decision-making. Among the 64.8 per cent (N = 217) who responded, the majority supported third-trimester termination (TTT) for diseases such as spina bifida, trisomy 21, microcephaly, and Duchenne muscular dystrophy; 30-59 per cent supported TTT for cystic fibrosis and sickle cell disease; and 22-29 per cent supported TTT for haemophilia, tetralogy of Fallot, limb amputation, and Turner and Klinefelter syndromes. Obstetricians who approved of abortion across trimesters were less concerned with the certainty of diagnosis than its severity, more likely to think that abortion ought to be the parents' choice, but more likely to report making a recommendation to the parents about whether to abort a fetus. Such permissive abortion attitudes might imply more permissive prenatal diagnosis and abortion practice among Parisian obstetricians, which might lead to increased migration of patients from other E.C. countries. Cross-cultural variation in obstetric practice suggests that an international registry of pregnancies terminated for medical reasons, enabling further study of this issue, would be valuable. PMID:8284289

  11. The A0 abort system for the Tevatron upgrade

    SciTech Connect

    Crawford, C.

    1989-03-01

    The installation of electrostatic separator modules at B48 and C17 in the Tevatron necessitates changes to the Tevatron abort system. There will no longer be room for either the proton or antiproton kicker magnets used in the present system. The kickers at C17 will be permanently removed. The kickers at B48 will be temporarily removed for collider operation and will be replaced for fixed target operation. The existing proton abort system will remain unchanged during fixed target operation. This note describes a proposed abort system for operation in the collider mode for 22 on 22 bunches and provides details of specifications for the required components. In certain cases, for example in the case of the pulsers for the magnets and the absorber assembly, system components are designed with the option of upgrading to 44 on 44 bunch operation in mind. 8 refs., 14 figs.

  12. Psychosocial aspects of abortion

    PubMed Central

    Illsley, Raymond; Hall, Marion H.

    1976-01-01

    The literature on psychosocial aspects of abortion is confusing. Individual publications must be interpreted in the context of cultural, religious, and legal constraints obtaining in a particular society at a given time, with due attention to the status and availability of alternatives to abortion that might be chosen by a woman with an “unwanted” pregnancy. A review of the literature shows that, where careful pre- and post-abortion assessments are made, the evidence is that psychological benefit commonly results, and serious adverse emotional sequelae are rare. The outcome of refused abortion seems less satisfactory, with regrets and distress frequently occurring. Research on the administration of abortion services suggests that counselling is often of value, that distress is frequently caused by delays in deciding upon and in carrying out abortions, and by unsympathetic attitudes of service providers. The phenomenon of repeated abortion seeking should be seen in the context of the availability and cost of contraception and sterilization. The place of sterilization with abortion requires careful study. A recommendation is made for observational descriptive research on populations of women with potentially unwanted pregnancies in different cultures, with comparisons of management systems and an evaluation of their impact on service users. PMID:1085671

  13. Reverse Launch Abort System Parachute Architecture Trade Study

    NASA Technical Reports Server (NTRS)

    Litton, Daniel K.; O'Keefe, Stephen A.; Winski, Richard G.

    2011-01-01

    This study investigated a potential Launch Abort System (LAS) Concept of Operations and abort parachute architecture. The purpose of the study was to look at the concept of jettisoning the LAS tower forward (Reverse LAS or RLAS) into the free-stream flow rather than after reorienting to a heatshield forward orientation. A hypothesized benefit was that due to the compressed timeline the dynamic pressure at main line stretch would be substantially less. This would enable the entry parachutes to be designed and sized based on entry loading conditions rather than the current stressing case of a Pad Abort. Ultimately, concerns about the highly dynamic reorientation of the CM via parachutes, and the additional requirement of a triple bridle attachment for the RLAS parachute system, overshadowed the potential benefits and ended this effort.

  14. Overview of C/C-SiC Composite Development for the Orion Launch Abort System

    NASA Technical Reports Server (NTRS)

    Allen, Lee R.; Valentine, Peter G.; Schofield, Elizabeth S.; Beshears, Ronald D.; Coston, James E.

    2012-01-01

    Past and present efforts by the authors to further understanding of the ceramic matrix composite (CMC) material used in the valve components of the Orion Launch Abort System (LAS) Attitude Control Motor (ACM) will be presented. The LAS is designed to quickly lift the Orion Crew Exploration Vehicle (CEV) away from its launch vehicle in emergency abort scenarios. The ACM is a solid rocket motor which utilizes eight throttleable nozzles to maintain proper orientation of the CEV during abort operations. Launch abort systems have not been available for use by NASA on manned launches since the last Apollo ]Saturn launch in 1975. The CMC material, carbon-carbon/silicon-carbide (C/C-SiC), is manufactured by Fiber Materials, Inc. and consists of a rigid 4-directional carbon-fiber tow weave reinforced with a mixed carbon plus SiC matrix. Several valve and full system (8-valve) static motor tests have been conducted by the motor vendor. The culmination of these tests was the successful flight test of the Orion LAS Pad Abort One (PA ]1) vehicle on May 6, 2010. Due to the fast pace of the LAS development program, NASA Marshall Space Flight Center assisted the LAS community by performing a series of material and component evaluations using fired hardware from valve and full ]system development motor tests, and from the PA-1 flight ACM motor. Information will be presented on the structure of the C/C-SiC material, as well as the efficacy of various non ]destructive evaluation (NDE) techniques, including but not limited to: radiography, computed tomography, nanofocus computed tomography, and X-ray transmission microscopy. Examinations of the microstructure of the material via scanning electron microscopy and energy dispersive spectroscopy will also be discussed. The findings resulting from the subject effort are assisting the LAS Project in risk assessments and in possible modifications to the final ACM operational design.

  15. Testing Strategies and Methodologies for the Max Launch Abort System

    NASA Technical Reports Server (NTRS)

    Schaible, Dawn M.; Yuchnovicz, Daniel E.

    2011-01-01

    The National Aeronautics and Space Administration (NASA) Engineering and Safety Center (NESC) was tasked to develop an alternate, tower-less launch abort system (LAS) as risk mitigation for the Orion Project. The successful pad abort flight demonstration test in July 2009 of the "Max" launch abort system (MLAS) provided data critical to the design of future LASs, while demonstrating the Agency s ability to rapidly design, build and fly full-scale hardware at minimal cost in a "virtual" work environment. Limited funding and an aggressive schedule presented a challenge for testing of the complex MLAS system. The successful pad abort flight demonstration test was attributed to the project s systems engineering and integration process, which included: a concise definition of, and an adherence to, flight test objectives; a solid operational concept; well defined performance requirements, and a test program tailored to reducing the highest flight test risks. The testing ranged from wind tunnel validation of computational fluid dynamic simulations to component ground tests of the highest risk subsystems. This paper provides an overview of the testing/risk management approach and methodologies used to understand and reduce the areas of highest risk - resulting in a successful flight demonstration test.

  16. ADVANCEMENT OF THE RHIC BEAM ABORT KICKER SYSTEM.

    SciTech Connect

    ZHANG,W.AHRENS,L.MI,J.OERTER,B.SANDBERG,J.WARBURTON,D.

    2003-05-12

    As one of the most critical system for RHIC operation, the beam abort kicker system has to be highly available, reliable, and stable for the entire operating range. Along with the RHIC commission and operation, consistent efforts have been spend to cope with immediate issues as well as inherited design issues. Major design changes have been implemented to achieve the higher operating voltage, longer high voltage hold-off time, fast retriggering and redundant triggering, and improved system protection, etc. Recent system test has demonstrated for the first time that both blue ring and yellow ring beam abort systems have achieved more than 24 hours hold off time at desired operating voltage. In this paper, we report break down, thyratron reverse arcing, and to build a fast re-trigger system to reduce beam spreading in event of premature discharge.

  17. Abortion - medical

    MedlinePlus

    ... womb (uterus). There are different types of medical abortions: Therapeutic medical abortion is done because the woman has ... Therapeutic medical abortion; Elective medical abortion; Induced abortion; Nonsurgical abortion

  18. Medical abortion and manual vacuum aspiration for legal abortion protect women's health and reduce costs to the health system: findings from Colombia.

    PubMed

    Rodriguez, Maria Isabel; Mendoza, Willis Simancas; Guerra-Palacio, Camilo; Guzman, Nelson Alvis; Tolosa, Jorge E

    2015-02-01

    The majority of abortions in Colombia continue to take place outside the formal health system under a range of conditions, with the majority of women obtaining misoprostol from a thriving black market for the drug and self-administering the medication. We conducted a cost analysis to compare the costs to the health system of three approaches to the provision of abortion care in Colombia: post-abortion care for complications of unsafe abortions, and for legal abortions in a health facility, misoprostol-only medical abortion and vacuum aspiration abortion. Hospital billing records from three institutions, two large maternity hospitals and one specialist reproductive health clinic, were analysed for procedure and complication rates, and costs by diagnosis. The majority of visits (94%) were to the two hospitals for post-abortion care; the other 6% were for legal abortions. Only one minor complication was found among the women having legal abortions, a complication rate of less than 1%. Among the women presenting for post-abortion care, 5% had complications during their treatment, mainly from infection or haemorrhage. Legal abortions were associated not only with far fewer complications for women, but also lower costs for the health system than for post-abortion care. We calculated based on our findings that for every 1,000 women receiving post-abortion care instead of a legal abortion within the health system, 16 women experienced avoidable complications, and the health system spent US $48,000 managing them. Increasing women's access to safe abortion care would not only reduce complications for women, but would also be a cost-saving strategy for the health system. PMID:25702076

  19. Medical abortion and manual vacuum aspiration for legal abortion protect women's health and reduce costs to the health system: findings from Colombia.

    PubMed

    Rodriguez, Maria Isabel; Mendoza, Willis Simancas; Guerra-Palacio, Camilo; Guzman, Nelson Alvis; Tolosa, Jorge E

    2015-02-01

    The majority of abortions in Colombia continue to take place outside the formal health system under a range of conditions, with the majority of women obtaining misoprostol from a thriving black market for the drug and self-administering the medication. We conducted a cost analysis to compare the costs to the health system of three approaches to the provision of abortion care in Colombia: post-abortion care for complications of unsafe abortions, and for legal abortions in a health facility, misoprostol-only medical abortion and vacuum aspiration abortion. Hospital billing records from three institutions, two large maternity hospitals and one specialist reproductive health clinic, were analysed for procedure and complication rates, and costs by diagnosis. The majority of visits (94%) were to the two hospitals for post-abortion care; the other 6% were for legal abortions. Only one minor complication was found among the women having legal abortions, a complication rate of less than 1%. Among the women presenting for post-abortion care, 5% had complications during their treatment, mainly from infection or haemorrhage. Legal abortions were associated not only with far fewer complications for women, but also lower costs for the health system than for post-abortion care. We calculated based on our findings that for every 1,000 women receiving post-abortion care instead of a legal abortion within the health system, 16 women experienced avoidable complications, and the health system spent US $48,000 managing them. Increasing women's access to safe abortion care would not only reduce complications for women, but would also be a cost-saving strategy for the health system.

  20. Attitudes towards the legal context of unsafe abortion in Timor-Leste.

    PubMed

    Belton, Suzanne; Whittaker, Andrea; Fonseca, Zulmira; Wells-Brown, Tanya; Pais, Patricia

    2009-11-01

    The new Penal Code in 2009 was an opportunity for Timor-Leste to allow some legal grounds for abortion, which was highly restricted under Indonesian rule. Public debate was contentious before ratification of the new code, which allowed abortion to save a woman's life and health. A month later, 13 amendments to the code were passed, highly restricting abortion again. This paper describes the socio-legal context of unsafe abortion in Timor-Leste, based on research in 2006-08 on national laws and policies and interviews with legal professionals, police, doctors and midwives, and community-based focus group discussions. Data on unsafe abortions in Timor-Leste are rarely recorded. A small number of cases of abortion and infanticide are reported but are rarely prosecuted, due to deficiencies in evidence and procedure. While there are voices supporting law reform, the Roman Catholic church heavily influences public policy and opinion. Professional views on when abortion should be legal varied, but in the community people believed that saving women's lives was paramount and came before the law. The revised Penal Code is insufficient to reduce unsafe abortion and maternal mortality. Change will be slow, but access to safe abortion and modern contraception are crucial to women's ability to participate fully as citizens in Timor-Leste.

  1. Design of Launch Abort System Thrust Profile and Concept of Operations

    NASA Technical Reports Server (NTRS)

    Litton, Daniel; O'Keefe, Stephen A.; Winski, Richard G.; Davidson, John B.

    2008-01-01

    This paper describes how the Abort Motor thrust profile has been tailored and how optimizing the Concept of Operations on the Launch Abort System (LAS) of the Orion Crew Exploration Vehicle (CEV) aides in getting the crew safely away from a failed Crew Launch Vehicle (CLV). Unlike the passive nature of the Apollo system, the Orion Launch Abort Vehicle will be actively controlled, giving the program a more robust abort system with a higher probability of crew survival for an abort at all points throughout the CLV trajectory. By optimizing the concept of operations and thrust profile the Orion program will be able to take full advantage of the active Orion LAS. Discussion will involve an overview of the development of the abort motor thrust profile and the current abort concept of operations as well as their effects on the performance of LAS aborts. Pad Abort (for performance) and Maximum Drag (for separation from the Launch Vehicle) are the two points that dictate the required thrust and shape of the thrust profile. The results in this paper show that 95% success of all performance requirements is not currently met for Pad Abort. Future improvements to the current parachute sequence and other potential changes will mitigate the current problems, and meet abort performance requirements.

  2. Simulation Environment for Orion Launch Abort System Control Design Studies

    NASA Technical Reports Server (NTRS)

    McMinn, J. Dana; Jackson, E. Bruce; Christhilf, David M.

    2007-01-01

    The development and use of an interactive environment to perform control system design and analysis of the proposed Crew Exploration Vehicle Launch Abort System is described. The environment, built using a commercial dynamic systems design package, includes use of an open-source configuration control software tool and a collaborative wiki to coordinate between the simulation developers, control law developers and users. A method for switching between multiple candidate control laws and vehicle configurations is described. Aerodynamic models, especially in a development program, change rapidly, so a means for automating the implementation of new aerodynamic models is described.

  3. Orion Crew Exploration Vehicle Launch Abort System Guidance and Control Analysis Overview

    NASA Technical Reports Server (NTRS)

    Davidson, John B.; Kim, Sungwan; Raney, David L.; Aubuchon, Vanessa V.; Sparks, Dean W.; Busan, Ronald C.; Proud, Ryan W.; Merritt, Deborah S.

    2008-01-01

    Aborts during the critical ascent flight phase require the design and operation of Orion Crew Exploration Vehicle (CEV) systems to escape from the Crew Launch Vehicle (CLV) and return the crew safely to the Earth. To accomplish this requirement of continuous abort coverage, CEV ascent abort modes are being designed and analyzed to accommodate the velocity, altitude, atmospheric, and vehicle configuration changes that occur during ascent. Aborts from the launch pad to early in the flight of the CLV second stage are performed using the Launch Abort System (LAS). During this type of abort, the LAS Abort Motor is used to pull the Crew Module (CM) safely away from the CLV and Service Module (SM). LAS abort guidance and control studies and design trades are being conducted so that more informed decisions can be made regarding the vehicle abort requirements, design, and operation. This paper presents an overview of the Orion CEV, an overview of the LAS ascent abort mode, and a summary of key LAS abort analysis methods and results.

  4. The Max Launch Abort System - Concept, Flight Test, and Evolution

    NASA Technical Reports Server (NTRS)

    Gilbert, Michael G.

    2014-01-01

    The NASA Engineering and Safety Center (NESC) is an independent engineering analysis and test organization providing support across the range of NASA programs. In 2007 NASA was developing the launch escape system for the Orion spacecraft that was evolved from the traditional tower-configuration escape systems used for the historic Mercury and Apollo spacecraft. The NESC was tasked, as a programmatic risk-reduction effort to develop and flight test an alternative to the Orion baseline escape system concept. This project became known as the Max Launch Abort System (MLAS), named in honor of Maxime Faget, the developer of the original Mercury escape system. Over the course of approximately two years the NESC performed conceptual and tradeoff analyses, designed and built full-scale flight test hardware, and conducted a flight test demonstration in July 2009. Since the flight test, the NESC has continued to further develop and refine the MLAS concept.

  5. Radiological Studies for the LCLS Beam Abort System

    SciTech Connect

    Santana Leitner, M.; Vollaire, J.; Mao, X.S.

    2008-03-25

    The Linac Coherent Light Source (LCLS), a pioneer hard x-ray free electron laser is currently under construction at the Stanford Linear Accelerator Center. It is expected that by 2009 LCLS will deliver laser pulses of unprecedented brightness and short length, which will be used in several forefront research applications. This ambitious project encompasses major design challenges to the radiation protection like the numerous sources and the number of surveyed objects. In order to sort those, the showers from various loss sources have been tracked along a detailed model covering 1/2 mile of LCLS accelerator by means of the Monte Carlo intra nuclear cascade codes FLUKA and MARS15. This article covers the FLUKA studies of heat load; prompt and residual dose and environmental impact for the LCLS beam abort system.

  6. Teenage abortion in Germany: with reference to the legal system in the United States.

    PubMed

    Belling, D W; Eberl, C

    1996-01-01

    This document compares the legal aspects of induced abortion in the US and Germany with a focus on how each country treats minors who wish to undergo abortion. After a short introduction, the second section describes the legal approach to abortion in the US where women (including minors) have an implicitly recognized constitutional right to abortion until compelling state interest intervenes at a point where the unborn child would be viable outside of the womb. States, however, may permit parents to participate in their daughter's abortion decisions as long as a "judicial bypass procedure" exists to protect the minor's rights. Section 3 describes the situation in Germany, where no constitutional right to abortion exists and where the fetus is protected by the constitution. A minor's right to abortion is determined by the provisions governing whether or not an abortion can be performed, by age limitations, and by the custody rights of the parents. Relevant decisions of the Federal Constitutional Court in 1975 and 1993 are reviewed to show that women have a duty to carry a pregnancy to term unless the woman requests the abortion within 12 weeks of conception and submits to counseling which seeks to protect the fetus (such an abortion would be illegal but immune from prosecution). German court rulings on the competency of minors to render consent are then noted to show that even minors have ultimate responsibility with regard to abortion. Analysis of the legal situation in Germany continues with a look at the personal custody rights of parents and the limitations on those rights imposed by the constitutional rights of the child, by the child's age, and by the child's self-reliance and capacity to assume responsibility. The conclusion contrasts the US and German legal sources of limitation of parental rights over the decisions of minors and the ways each system determines the competency of a minor to make such a decision.

  7. Attitude Determination and Control Systems

    NASA Technical Reports Server (NTRS)

    Starin, Scott R.; Eterno, John

    2010-01-01

    The importance of accurately pointing spacecraft to our daily lives is pervasive, yet somehow escapes the notice of most people. In this section, we will summarize the processes and technologies used in designing and operating spacecraft pointing (i.e. attitude) systems.

  8. Air Data Boom System Development for the Max Launch Abort System (MLAS) Flight Experiment

    NASA Technical Reports Server (NTRS)

    Woods-Vedeler, Jessica A.; Cox, Jeff; Bondurant, Robert; Dupont, Ron; ODonnell, Louise; Vellines, Wesley, IV; Johnston, William M.; Cagle, Christopher M.; Schuster, David M.; Elliott, Kenny B.; Newman, John A.; Tyler, Erik D.; Sterling, William J.

    2010-01-01

    In 2007, the NASA Exploration Systems Mission Directorate (ESMD) chartered the NASA Engineering Safety Center (NESC) to demonstrate an alternate launch abort concept as risk mitigation for the Orion project's baseline "tower" design. On July 8, 2009, a full scale and passively, aerodynamically stabilized MLAS launch abort demonstrator was successfully launched from Wallops Flight Facility following nearly two years of development work on the launch abort concept: from a napkin sketch to a flight demonstration of the full-scale flight test vehicle. The MLAS flight test vehicle was instrumented with a suite of aerodynamic sensors. The purpose was to obtain sufficient data to demonstrate that the vehicle demonstrated the behavior predicted by Computational Fluid Dynamics (CFD) analysis and wind tunnel testing. This paper describes development of the Air Data Boom (ADB) component of the aerodynamic sensor suite.

  9. SAS Attitude Support System

    NASA Technical Reports Server (NTRS)

    Snyder, J. L.; Meyers, G. F.

    1972-01-01

    A unique ground control system was designed and implemented to support and meet the stringent mission requirements of the SAS-1. The important features of the system are described with emphasis on the software used to control the orientation of the spacecraft. A summary of the system's operation during the SAS-1 mission is given along with a discussion of the performance of the software subsystems relative to the mission requirements.

  10. Prevalence of abortion and stillbirth in a beef cattle system in Southeastern Mexico.

    PubMed

    Segura-Correa, José C; Segura-Correa, Victor M

    2009-12-01

    Prenatal mortality is an important cause of production losses in the livestock industry. This study estimates the prevalences of abortion and stillbirth in a beef cattle system and determines the significance of some risk factors, in the tropics of Mexico. Data were obtained from a Zebu cattle herd and their crosses with Bos taurus breeds, in Yucatan, Mexico. The logit of the probability of an abortion or stillbirth was modeled using binary logistic regression. The risk factors tested were: year of abortion (or calving), season of abortion (or calving), parity number and dam breed group. The effect of twins on stillbirth was tested using Fisher exact test. Of the 4175 calvings studied 49 were abortions (1.17%). Significant factors in the logistic regression analysis for abortions were season of abortion and parity number. The risk of abortion was lower in the dry seasons compared to the rainy and windy seasons (P = 0.009). The risk of abortion was higher in second parity cows followed by the third and first parity cows, as compared to older cows (P = 0.015). Of the 4126 births, 87 were stillbirths (2.11%). Significant factors in the logistic regression analysis for stillbirth were year of calving (P = 0.0001) and parity number (P < 0.001). The risk of stillbirth in first parity cows was 2.6 times that of old cows. Of the total births, 15 were twins (0.36%) of which 7 were born dead calves. Herd owners must focus on the significant risk factors under their control to reduce the prevalence of prenatal mortality. PMID:19449114

  11. Skylab thruster attitude control system

    NASA Technical Reports Server (NTRS)

    Wilmer, G. E., Jr.

    1974-01-01

    Preflight activities and the Skylab mission support effort for the thruster attitude control system (TACS) are documented. The preflight activities include a description of problems and their solutions encountered in the development, qualification, and flight checkout test programs. Mission support effort is presented as it relates to system performance assessment, real-time problem solving, flight anomalies, and the daily system evaluation. Finally, the detailed flight evaluation is presented for each phase of the mission using system telemetry data. Data assert that the TACS met or exceeded design requirements and fulfilled its assigned mission objectives.

  12. Abortion - surgical

    MedlinePlus

    Suction curettage; Surgical abortion; Elective abortion - surgical; Therapeutic abortion - surgical ... Surgical abortion involves dilating the opening to the uterus (cervix) and placing a small suction tube into the uterus. ...

  13. Orion Launch Abort System Jettison Motor Performance During Exploration Flight Test 1

    NASA Technical Reports Server (NTRS)

    McCauley, Rachel J.; Davidson, John B.; Winski, Richard G.

    2015-01-01

    This paper presents an overview of the flight test objectives and performance of the Orion Launch Abort System during Exploration Flight Test-1. Exploration Flight Test-1, the first flight test of the Orion spacecraft, was managed and led by the Orion prime contractor, Lockheed Martin, and launched atop a United Launch Alliance Delta IV Heavy rocket. This flight test was a two-orbit, high-apogee, high-energy entry, low-inclination test mission used to validate and test systems critical to crew safety. This test included the first flight test of the Launch Abort System performing Orion nominal flight mission critical objectives. Although the Orion Program has tested a number of the critical systems of the Orion spacecraft on the ground, the launch environment cannot be replicated completely on Earth. Data from this flight will be used to verify the function of the jettison motor to separate the Launch Abort System from the crew module so it can continue on with the mission. Selected Launch Abort System flight test data is presented and discussed in the paper. Through flight test data, Launch Abort System performance trends have been derived that will prove valuable to future flights as well as the manned space program.

  14. Counseling needs and attitudes toward prenatal diagnosis and abortion in fragile-X families.

    PubMed

    Meryash, D L; Abuelo, D

    1988-05-01

    The genetic counseling need of 32 women of normal intelligence at-risk for having children with the fragile-X syndrome (FXS) were determined by a questionnaire study which included assessment of their attitudes toward prenatal diagnosis and the option of pregnancy termination. Eighteen (56%) of the women had one or more children with the FXS and 14 (44%) had no affected children. Twenty-six (81%) of the subjects stated that they would choose to have prenatal diagnosis and 9 (28%) indicated they would terminate an affected pregnancy. There was no significant difference between women who had affected children and those who did not have affected children, nor between Catholics and non-Catholics regarding acceptance of prenatal diagnosis. Catholic women were less likely to consider pregnancy termination than non-Catholics, but the majority of subjects (56%) were unsure what they would do if a fetus they were carrying was found to be affected. Issues the subjects considered most important for discussion with a genetic counselor included: 1) availability of treatment, 2) risk for having an affected grand child, 3) expectations for future functioning of affected children, and 4) availability of prenatal diagnosis.

  15. Noise screen for attitude control system

    NASA Technical Reports Server (NTRS)

    Rodden, John J. (Inventor); Stevens, Homer D. (Inventor); Hong, David P. (Inventor); Hirschberg, Philip C. (Inventor)

    2002-01-01

    An attitude control system comprising a controller and a noise screen device coupled to the controller. The controller is adapted to control an attitude of a vehicle carrying an actuator system that is adapted to pulse in metered bursts in order to generate a control torque to control the attitude of the vehicle in response to a control pulse. The noise screen device is adapted to generate a noise screen signal in response to the control pulse that is generated when an input attitude error signal exceeds a predetermined deadband attitude level. The noise screen signal comprises a decaying offset signal that when combined with the attitude error input signal results in a net attitude error input signal away from the predetermined deadband level to reduce further control pulse generation.

  16. Unsafe abortion in adolescents.

    PubMed

    Olukoya, A A; Kaya, A; Ferguson, B J; AbouZahr, C

    2001-11-01

    Every year, an estimated 2.0-4.4 million adolescents resort to abortion. In comparison with adults, adolescents are more likely to delay the abortion, resort to unskilled persons to perform it, use dangerous methods and present late when complications arise. Adolescents are also more likely to experience complications. Consequently, adolescents seeking abortion or presenting with complications of abortion should be considered as a medical emergency. Issues requiring special attention in the management of abortion complications in adolescents are identified. Approaches to adolescent abortion should involve all levels of the health care system, as well as the community, and should include not only management of the consequences of unsafe abortion, but also post-abortion contraception and counseling. Prevention of unwanted pregnancy by providing information on sexuality, ensuring that reproductive health services are adolescent-friendly, creating a supportive environment, building young people's social and decision-making skills, and offering counseling in times of crisis are highlighted.

  17. Seasat-A attitude control system

    NASA Technical Reports Server (NTRS)

    Weiss, R.; Rodden, J. J.; Hendricks, R. J.

    1977-01-01

    The Seasat-A attitude control system controls the attitude of the satellite system during injection into final circular orbit after Atlas boost, during orbit adjust and trim phases, and throughout the 3-year mission. Ascent and injection guidance and attitude control are provided by the Agena spacecraft with a gyrocompassed mass expulsion system. On-orbit attitude control functions are performed by a system that has its functional roots in the gravity-gradient momentum bias technology. The paper discusses hardware, control laws, and simulation results.

  18. Adaptive mass expulsion attitude control system

    NASA Technical Reports Server (NTRS)

    Rodden, John J. (Inventor); Stevens, Homer D. (Inventor); Carrou, Stephane (Inventor)

    2001-01-01

    An attitude control system and method operative with a thruster controls the attitude of a vehicle carrying the thruster, wherein the thruster has a valve enabling the formation of pulses of expelled gas from a source of compressed gas. Data of the attitude of the vehicle is gathered, wherein the vehicle is located within a force field tending to orient the vehicle in a first attitude different from a desired attitude. The attitude data is evaluated to determine a pattern of values of attitude of the vehicle in response to the gas pulses of the thruster and in response to the force field. The system and the method maintain the attitude within a predetermined band of values of attitude which includes the desired attitude. Computation circuitry establishes an optimal duration of each of the gas pulses based on the pattern of values of attitude, the optimal duration providing for a minimal number of opening and closure operations of the valve. The thruster is operated to provide gas pulses having the optimal duration.

  19. Study of fail-safe abort system for an actively cooled hypersonic aircraft, volume 2

    NASA Technical Reports Server (NTRS)

    Peeples, M. E.; Herring, R. L.

    1976-01-01

    Conceptual designs of a fail-safe abort system for hydrogen fueled actively cooled high speed aircraft are examined. The fail-safe concept depends on basically three factors: (1) a reliable method of detecting a failure or malfunction in the active cooling system, (2) the optimization of abort trajectories which minimize the descent heat load to the aircraft, and (3) fail-safe thermostructural concepts to minimize both the weight and the maximum temperature the structure will reach during descent. These factors are examined and promising approaches are evaluated based on weight, reliability, ease of manufacture and cost.

  20. Late-term abortion.

    PubMed

    Epner, J E; Jonas, H S; Seckinger, D L

    1998-08-26

    Recent proposed federal legislation banning certain abortion procedures, particularly intact dilatation and extraction, would modify the US Criminal Code such that physicians performing these procedures would be liable for monetary and statutory damages. Clarification of medical procedures is important because some of the procedures used to induce abortion prior to viability are identical or similar to postviability procedures. This article reviews the scientific and medical information on late-term abortion and late-term abortion techniques and includes data on the prevalence of late-term abortion, abortion-related mortality and morbidity rates, and legal issues regarding fetal viability and the balance of maternal and fetal interests. According to enacted American Medical Association (AMA) policy, the use of appropriate medical terminology is critical in defining late-term abortion procedures, particularly intact dilatation and extraction, which is a variant of but distinct from dilatation and evacuation. The AMA recommends that the intact dilatation and extraction procedure not be used unless alternative procedures pose materially greater risk to the woman and that abortions not be performed in the third trimester except in cases of serious fetal anomalies incompatible with life. Major medical societies are urged to collaborate on clinical guidelines on late-term abortion techniques and circumstances that conform to standards of good medical practice. More research on the advantages and disadvantages of specific abortion procedures would help physicians make informed choices about specific abortion procedures. Expanded ongoing data surveillance systems estimating the prevalence of abortion are also needed. PMID:9728645

  1. Late-term abortion.

    PubMed

    Epner, J E; Jonas, H S; Seckinger, D L

    1998-08-26

    Recent proposed federal legislation banning certain abortion procedures, particularly intact dilatation and extraction, would modify the US Criminal Code such that physicians performing these procedures would be liable for monetary and statutory damages. Clarification of medical procedures is important because some of the procedures used to induce abortion prior to viability are identical or similar to postviability procedures. This article reviews the scientific and medical information on late-term abortion and late-term abortion techniques and includes data on the prevalence of late-term abortion, abortion-related mortality and morbidity rates, and legal issues regarding fetal viability and the balance of maternal and fetal interests. According to enacted American Medical Association (AMA) policy, the use of appropriate medical terminology is critical in defining late-term abortion procedures, particularly intact dilatation and extraction, which is a variant of but distinct from dilatation and evacuation. The AMA recommends that the intact dilatation and extraction procedure not be used unless alternative procedures pose materially greater risk to the woman and that abortions not be performed in the third trimester except in cases of serious fetal anomalies incompatible with life. Major medical societies are urged to collaborate on clinical guidelines on late-term abortion techniques and circumstances that conform to standards of good medical practice. More research on the advantages and disadvantages of specific abortion procedures would help physicians make informed choices about specific abortion procedures. Expanded ongoing data surveillance systems estimating the prevalence of abortion are also needed.

  2. Use of a Laser Videodisc System: Attitudes.

    ERIC Educational Resources Information Center

    Kelly, Sarah A.

    1988-01-01

    Describes a study that assessed the attitudes of novice searchers before and after using a laser videodisk system. The discussion covers the relationships between the users' initial attitudes, prior computer experience, and success in using the videodisk system. (11 references) (Author/CLB)

  3. Abortion: pro and contra.

    PubMed

    Jebereanu, Laura; Jebereanu, Diana; Alaman, Roxana; Tofan, Andra; Jebereanu, Sorin; Pauncu, Sebastian

    2006-01-01

    To kill a new life before it's born, to do an abortion. This is a problem of many generations. In the evolution of human civilization, the attitude concerning abortion was different in different cultures, periods, societies. The aim of our study is to evaluate the actual opinion and attitude of young persons, students, and residents in medicine in Timisoara city, and the situation of the whole country. We performed a questionnaire for 400 people, between the ages of 19 and 28 with superior studies. The group is composed of 320 (80%) women and 80 (20%) men. We accepted for recording and analyzing all the the completed questionnaires. The questions referred to the topic of abortion in the antecedents, and asked if they had had one, how it affected the life of the women and her family, the circumstances of acceptance of abortion today, religious aspects and different other aspects. PMID:17146907

  4. Induced Abortion

    MedlinePlus

    ... Induced Abortion Patient Education FAQs Induced Abortion Patient Education Pamphlets - Spanish Induced Abortion FAQ043, May 2015 PDF Format Induced ... Your Practice Patient Safety & Quality Payment Reform (MACRA) Education & Events Annual ... Pamphlets Teen Health About ACOG About Us Leadership & ...

  5. Attitude Estimation in Fractionated Spacecraft Cluster Systems

    NASA Technical Reports Server (NTRS)

    Hadaegh, Fred Y.; Blackmore, James C.

    2011-01-01

    An attitude estimation was examined in fractioned free-flying spacecraft. Instead of a single, monolithic spacecraft, a fractionated free-flying spacecraft uses multiple spacecraft modules. These modules are connected only through wireless communication links and, potentially, wireless power links. The key advantage of this concept is the ability to respond to uncertainty. For example, if a single spacecraft module in the cluster fails, a new one can be launched at a lower cost and risk than would be incurred with onorbit servicing or replacement of the monolithic spacecraft. In order to create such a system, however, it is essential to know what the navigation capabilities of the fractionated system are as a function of the capabilities of the individual modules, and to have an algorithm that can perform estimation of the attitudes and relative positions of the modules with fractionated sensing capabilities. Looking specifically at fractionated attitude estimation with startrackers and optical relative attitude sensors, a set of mathematical tools has been developed that specify the set of sensors necessary to ensure that the attitude of the entire cluster ( cluster attitude ) can be observed. Also developed was a navigation filter that can estimate the cluster attitude if these conditions are satisfied. Each module in the cluster may have either a startracker, a relative attitude sensor, or both. An extended Kalman filter can be used to estimate the attitude of all modules. A range of estimation performances can be achieved depending on the sensors used and the topology of the sensing network.

  6. GN and C Design Overview and Flight Test Results from NASA's Max Launch Abort System (MLAS)

    NASA Technical Reports Server (NTRS)

    Dennehy, Cornelius J.; Lanzi, Ryamond J.; Ward, Philip R.

    2010-01-01

    The National Aeronautics and Space Administration (NASA) Engineering and Safety Center (NESC) designed, developed and flew the alternative Max Launch Abort System (MLAS) as risk mitigation for the baseline Orion spacecraft launch abort system (LAS) already in development. The NESC was tasked with both formulating a conceptual objective system (OS) design of this alternative MLAS as well as demonstrating this concept with a simulated pad abort flight test. The goal was to obtain sufficient flight test data to assess performance, validate models/tools, and to reduce the design and development risks for a MLAS OS. Less than 2 years after Project start the MLAS simulated pad abort flight test was successfully conducted from Wallops Island on July 8, 2009. The entire flight test duration was 88 seconds during which time multiple staging events were performed and nine separate critically timed parachute deployments occurred as scheduled. Overall, the as-flown flight performance was as predicted prior to launch. This paper provides an overview of the guidance navigation and control (GN&C) technical approaches employed on this rapid prototyping activity. This paper describes the methodology used to design the MLAS flight test vehicle (FTV). Lessons that were learned during this rapid prototyping project are also summarized.

  7. Optimal return-to-launchsite abort trajectories for an HL-20 Personnel Launch System vehicle

    NASA Astrophysics Data System (ADS)

    Dutton, Kevin E.

    The Personnel Launch System (PLS) being studied by NASA is a system to complement the Space Shuttle and provide alternative access to space. The PLS consists of a manned spacecraft launched by an expendable launch vehicle (ELV). A candidate for the manned spacecraft is the HL-20 lifting body. In the event of an ELV malfunction during the initial portion of the ascent trajectory, the HL-20 will separate from the rocket and perform an unpowered return-to-launchsite (RTLS) abort. This paper describes an investigation of the RTLS abort scenario using optimal control theory. The objective of the abort trajectory is to maximize final altitude at a point near the runway. The assumption is then made that there exists a control history to steer the vehicle to any final altitude lower than the final optimal altitude. With this selection of cost function, and with this assumption, the feasibility of an RTLS abort at different times along the ascent trajectory can be determined. The method of differential inclusions, which allows the determination of optimal states and eliminates the need for determining the optimal controls, is used to determine the optimal trajectories.

  8. Autonomous Attitude Determination System (AADS). Volume 1: System description

    NASA Technical Reports Server (NTRS)

    Saralkar, K.; Frenkel, Y.; Klitsch, G.; Liu, K. S.; Lefferts, E.; Tasaki, K.; Snow, F.; Garrahan, J.

    1982-01-01

    Information necessary to understand the Autonomous Attitude Determination System (AADS) is presented. Topics include AADS requirements, program structure, algorithms, and system generation and execution.

  9. Orion Guidance and Control Ascent Abort Algorithm Design and Performance Results

    NASA Technical Reports Server (NTRS)

    Proud, Ryan W.; Bendle, John R.; Tedesco, Mark B.; Hart, Jeremy J.

    2009-01-01

    During the ascent flight phase of NASA s Constellation Program, the Ares launch vehicle propels the Orion crew vehicle to an agreed to insertion target. If a failure occurs at any point in time during ascent then a system must be in place to abort the mission and return the crew to a safe landing with a high probability of success. To achieve continuous abort coverage one of two sets of effectors is used. Either the Launch Abort System (LAS), consisting of the Attitude Control Motor (ACM) and the Abort Motor (AM), or the Service Module (SM), consisting of SM Orion Main Engine (OME), Auxiliary (Aux) Jets, and Reaction Control System (RCS) jets, is used. The LAS effectors are used for aborts from liftoff through the first 30 seconds of second stage flight. The SM effectors are used from that point through Main Engine Cutoff (MECO). There are two distinct sets of Guidance and Control (G&C) algorithms that are designed to maximize the performance of these abort effectors. This paper will outline the necessary inputs to the G&C subsystem, the preliminary design of the G&C algorithms, the ability of the algorithms to predict what abort modes are achievable, and the resulting success of the abort system. Abort success will be measured against the Preliminary Design Review (PDR) abort performance metrics and overall performance will be reported. Finally, potential improvements to the G&C design will be discussed.

  10. Abort System Using Supersonic Aerodynamic Interaction for Capsule-Type Space Transportation System

    NASA Astrophysics Data System (ADS)

    小澤, 啓伺; 北村, 圭一; 花井, 勝祥; 三好, 理也; 森, 浩一; 中村, 佳朗

    The space transportation system using capsule/rocket configurations such as Apollo and Soyuz are simple compared with Space Shuttle, and have several merits from the viewpoint of reliability. The capsule/rocket system will take over the Space Shuttle, after it retires in 2010. As the Space Shuttle accidents had been caused by several factors, e.g., aerodynamic interaction of shock waves ahead of its wing, advanced abort systems such as LAS (Launch Abort System) are required for the capsule/rocket system. In the present study, as a baseline configuration, a combination of a cone and a cylinder is employed as a CEV (Crew Exploration Vehicle), which consists of a capsule (LAV: Launch Abort Vehicle) and a rocket (SM: Service Module). By changing the relative position of the two components as well as the profile area of the rocket, their effects on the capsule/rocket aerodynamic interaction and characteristics (drag and pitching moment) are experimentally and numerically investigated at a supersonic speed (M∞ = 3.0). It is found from the results that the clearance have little effects on the flow field for the case of the baseline configuration. The capsule always showed a positive drag (CD = 0.34), which means that thrust is required to overcome the drag. Otherwise the capsule will recontact the rocket. However in the case where the rocket contact area is 2.2 times as large as the capsule profile, more favorable effects were obtained. Especially in the case of a certain clearance (h/D = 0.40), the drag coefficient of the capsule is CD = -0.35, which means that the capsule suffers a thrust force from the aerodynamic interaction. Under this condition, if capsule has a pitch angle with 5 degrees instantaneously, then pitching moment coefficient becomes CMp = -0.41 therefore capsule stabilize. However, in the case of a very small clearance (h/D ∝ 0.00), the flow becomes unsteady involving pulsating shock wave, leading to a potentially risky separation of the capsule.

  11. [Induced abortion--a historical outline].

    PubMed

    Glenc, F

    1974-11-11

    An historical review of the use of induced abortion is presented, beginning with early eras. The Chinese were the 1st to record the practice of induced abortion, with this operation being administered to royal concubines recorded at 500-515 B.C. Induced abortion was not used in ancient Greece, either for criminal or ethical reason. However, the ancient Greeks did utilize compulsory abortion for serious economic indications, as a means of controlling natural growth. Greek medical, gyneoclogigcal instruments for adminsitering abortions were described by Hippocrates. The Greek moral attitudes on abortion were largely adopted by the Romans, which were later altered by the appearance of Christianity and new ethical ideas. These ideas dominated European attitudes, along with the Church of Rome, limiting induced abortion to cases where the life of the mother was threatened. This attitude has existed until the present century, when these moral ideas are being challanged seriously for the 1st time in modern history. PMID:4610534

  12. Attitude Determination and Control Systems

    NASA Technical Reports Server (NTRS)

    Starin, Scott R.; Eterno, John

    2011-01-01

    designing and operating spacecraft pointing (i.e. attitude) systems.

  13. Psychiatric aspects of therapeutic abortion.

    PubMed

    Doane, B K; Quigley, B G

    1981-09-01

    A search of the literature on the psychiatric aspects of abortion revealed poor study design, a lack of clear criteria for decisions for or against abortion, poor definition of psychologic symptoms experienced by patients, absence of control groups in clinical studies, and indecisiveness and uncritical attitudes in writers from various disciplines. A review of the sequelae of therapeutic abortion revealed that although the data are vague, symptoms of depression were reported most frequently, whereas those of psychosis were rare. Positive emotional responses and a favourable attitude toward therapeutic abortion were often reported, although again the statistical bases for these reports were inadequate. There was a lack of evidence that the reported effects were due to having an abortion rather than to other variables.Other areas dealt with inadequately in most of the articles reviewed included analyses of symptoms and of the evidence on the duration of sequelae, descriptions of the criteria for approving abortions, investigation of the psychiatric histories of the patients, presentation of data on the effects of refusing abortion requests, systematic study of a number of epidemiologic factors, and analyses of the circumstances leading to pregnancy in patients having abortions. The evidence was found to be sparse on the effects of supportive relationships, different abortion techniques and the length of gestation on the psychologic status of patients. Little attention was paid to the consequences of psychiatric labelling of patients, or to the effect of having an abortion on factors that may influence future pregnancies.The potential roles of health care professionals appear to deserve more study, and little research seems to have been done to compare the psychologic factors associated with abortion and those associated with live birth. As well, there is little evidence that differences in abortion legislation account for significant differences in the psychologic

  14. Guidance, Navigation and Control (GN and C) Design Overview and Flight Test Results from NASA's Max Launch Abort System (MLAS)

    NASA Technical Reports Server (NTRS)

    Dennehy, Cornelius J.; Lanzi, Raymond J.; Ward, Philip R.

    2010-01-01

    The National Aeronautics and Space Administration Engineering and Safety Center designed, developed and flew the alternative Max Launch Abort System (MLAS) as risk mitigation for the baseline Orion spacecraft launch abort system already in development. The NESC was tasked with both formulating a conceptual objective system design of this alternative MLAS as well as demonstrating this concept with a simulated pad abort flight test. Less than 2 years after Project start the MLAS simulated pad abort flight test was successfully conducted from Wallops Island on July 8, 2009. The entire flight test duration was 88 seconds during which time multiple staging events were performed and nine separate critically timed parachute deployments occurred as scheduled. This paper provides an overview of the guidance navigation and control technical approaches employed on this rapid prototyping activity; describes the methodology used to design the MLAS flight test vehicle; and lessons that were learned during this rapid prototyping project are also summarized.

  15. Abortion: a history.

    PubMed

    Hovey, G

    1985-01-01

    labor, and greater consumerism. The legal history of abortion in the US illustrates dramatically that it was doctors, not women, who defined the morality surrounding abortion. Women continue to have to cope with the legacy of this fact. The seemingly benign 2-sphere family of the 19th century cut a deep wound in the human community. Men had public power and authority and were encouraged to be sexual. Women were offered the alternative of being powerful only as sexual beings who could thus enforce a domestic moral order. The legacy of the 2-sphere family continues, but much has changed. By 1973 pressure for reform had led 14 states to liberalize their existing abortin laws, and the US Supreme Court finally ruled that abortion is a private matter between a woman and her doctor. The current problem is that despite new laws and new attitudes toward women and abortion, male dominated and male defined institutions still determine what is possible. Women's right to abortion will never be safe and secure as long as this situation continues. PMID:12340403

  16. The health system cost of post-abortion care in Uganda

    PubMed Central

    Vlassoff, Michael; Mugisha, Frederick; Sundaram, Aparna; Bankole, Akinrinola; Singh, Susheela; Amanya, Leo; Kiggundu, Charles; Mirembe, Florence

    2014-01-01

    This article presents estimates based on the research conducted in 2010 of the cost to the Ugandan health system of providing post-abortion care (PAC), filling a gap in knowledge of the cost of unsafe abortion. Thirty-nine public and private health facilities were sampled representing three levels of health care, and data were collected on drugs, supplies, material, personnel time and out-of-pocket expenses. In addition, direct non-medical costs in the form of overhead and capital costs were also measured. Our results show that the average annual PAC cost per client, across five types of abortion complications, was $131. The total cost of PAC nationally, including direct non-medical costs, was estimated to be $13.9 million per year. Satisfying all demand for PAC would raise the national cost to $20.8 million per year. This shows that PAC consumes a substantial portion of the total expenditure in reproductive health in Uganda. Investing more resources in family planning programmes to prevent unwanted and mistimed pregnancies would help reduce health systems costs. PMID:23274438

  17. The health system cost of post-abortion care in Rwanda

    PubMed Central

    Vlassoff, Michael; Musange, Sabine F; Kalisa, Ina R; Ngabo, Fidele; Sayinzoga, Felix; Singh, Susheela; Bankole, Akinrinola

    2015-01-01

    Based on research conducted in 2012, we estimate the cost to the Rwandan health-care system of providing post-abortion care (PAC) due to unsafe abortions, a subject of policy importance not studied before at the national level. Thirty-nine public and private health facilities representing three levels of health care were randomly selected for data collection from key care providers and administrators for all five regions. Using an ingredients approach to costing, data were gathered on drugs, supplies, material, personnel time and hospitalization. Additionally, direct non-medical costs such as overhead and capital costs were also measured. We found that the average annual PAC cost per client, across five types of abortion complications, was $93. The total cost of PAC nationally was estimated to be $1.7 million per year, 49% of which was expended on direct non-medical costs. Satisfying all demands for PAC would raise the national cost to $2.5 million per year. PAC comprises a significant share of total expenditure in reproductive health in Rwanda. Investing more resources in provision of contraceptive services to prevent unwanted or mistimed pregnancies would likely reduce health systems costs. PMID:24548846

  18. The health system cost of post-abortion care in Rwanda.

    PubMed

    Vlassoff, Michael; Musange, Sabine F; Kalisa, Ina R; Ngabo, Fidele; Sayinzoga, Felix; Singh, Susheela; Bankole, Akinrinola

    2015-03-01

    Based on research conducted in 2012, we estimate the cost to the Rwandan health-care system of providing post-abortion care (PAC) due to unsafe abortions, a subject of policy importance not studied before at the national level. Thirty-nine public and private health facilities representing three levels of health care were randomly selected for data collection from key care providers and administrators for all five regions. Using an ingredients approach to costing, data were gathered on drugs, supplies, material, personnel time and hospitalization. Additionally, direct non-medical costs such as overhead and capital costs were also measured. We found that the average annual PAC cost per client, across five types of abortion complications, was $93. The total cost of PAC nationally was estimated to be $1.7 million per year, 49% of which was expended on direct non-medical costs. Satisfying all demands for PAC would raise the national cost to $2.5 million per year. PAC comprises a significant share of total expenditure in reproductive health in Rwanda. Investing more resources in provision of contraceptive services to prevent unwanted or mistimed pregnancies would likely reduce health systems costs. PMID:24548846

  19. The health system cost of post-abortion care in Rwanda.

    PubMed

    Vlassoff, Michael; Musange, Sabine F; Kalisa, Ina R; Ngabo, Fidele; Sayinzoga, Felix; Singh, Susheela; Bankole, Akinrinola

    2015-03-01

    Based on research conducted in 2012, we estimate the cost to the Rwandan health-care system of providing post-abortion care (PAC) due to unsafe abortions, a subject of policy importance not studied before at the national level. Thirty-nine public and private health facilities representing three levels of health care were randomly selected for data collection from key care providers and administrators for all five regions. Using an ingredients approach to costing, data were gathered on drugs, supplies, material, personnel time and hospitalization. Additionally, direct non-medical costs such as overhead and capital costs were also measured. We found that the average annual PAC cost per client, across five types of abortion complications, was $93. The total cost of PAC nationally was estimated to be $1.7 million per year, 49% of which was expended on direct non-medical costs. Satisfying all demands for PAC would raise the national cost to $2.5 million per year. PAC comprises a significant share of total expenditure in reproductive health in Rwanda. Investing more resources in provision of contraceptive services to prevent unwanted or mistimed pregnancies would likely reduce health systems costs.

  20. Pitch Guidance Optimization for the Orion Abort Flight Tests

    NASA Technical Reports Server (NTRS)

    Stillwater, Ryan Allanque

    2010-01-01

    The National Aeronautics and Space Administration created the Constellation program to develop the next generation of manned space vehicles and launch vehicles. The Orion abort system is initiated in the event of an unsafe condition during launch. The system has a controller gains schedule that can be tuned to reduce the attitude errors between the simulated Orion abort trajectories and the guidance trajectory. A program was created that uses the method of steepest descent to tune the pitch gains schedule by an automated procedure. The gains schedule optimization was applied to three potential abort scenarios; each scenario tested using the optimized gains schedule resulted in reduced attitude errors when compared to the Orion production gains schedule.

  1. Modular design attitude control system

    NASA Technical Reports Server (NTRS)

    Chichester, F. D.

    1984-01-01

    A sequence of single axismodels and a series of reduced state linear observers of minimum order are used to reconstruct inaccessible variables pertaining to the modular attitude control of a rigid body flexible suspension model of a flexible spacecraft. The single axis models consist of two, three, four, and five rigid bodies, each interconnected by a flexible shaft passing through the mass centers of the bodies. Modal damping is added to each model. Reduced state linear observers are developed for synthesizing the inaccessible modal state variables for each modal model.

  2. Addressing barriers to safe abortion.

    PubMed

    Culwell, Kelly R; Hurwitz, Manuelle

    2013-05-01

    The latest World Health Organization data estimate that the total number of unsafe abortions globally has increased to 21.6 million in 2008. There is increasing recognition by the international community of the importance of the contribution of unsafe abortion to maternal mortality. However, the barriers to delivery of safe abortion services are many. In 68 countries, home to 26% of the world's population, abortion is prohibited altogether or only permitted to save a woman's life. Even in countries with more liberal abortion legal frameworks, additional social, economic, and health systems barriers and the stigma surrounding abortion prevent adequate access to safe abortion services and postabortion care. While much has been achieved to reduce the barriers to comprehensive abortion care, much remains to be done. Only through the concerted action of public, private, and civil society partners can we ensure that women have access to services that are safe, affordable, confidential, and stigma free. PMID:23477700

  3. Graduate Student Attitudes toward Grading Systems

    ERIC Educational Resources Information Center

    Michaelides, Michalis; Kirshner, Ben

    2005-01-01

    This study examined graduate student attitudes towards letter and pass/fail grading systems in the Law School and the School of Education in a selective university in the United States. Fifty-four students completed a questionnaire on goal orientations (ability comparison vs. mastery), amount of effort and stress in each of the two grading…

  4. Evaluation of the Space Shuttle Transatlantic Abort Landing Atmospheric Sounding System

    NASA Technical Reports Server (NTRS)

    Leahy, Frank B.

    2003-01-01

    A study was conducted to determine the quality of thermodynamic and wind data measured by or derived from the Transatlantic Abort Landing (TAL) Atmospheric Sounding System (TASS). The system has Global Positioning System (GPS) tracking capability and includes a helium-filled latex balloon that carries an instrument package (sonde) and various ground equipment that receives and processes the data from the sonde. TASS is used to provide vertical profiles of thermodynamic and low-resolution wind data in support of Shuttle abort landing operations at TAL sites. TASS uses GPS to determine height, wind speed, and wind direction. The TASS sonde has sensors that directly measure air temperature and relative humidity. These are then used to derive air pressure and density. Test flights were conducted where a TASS sonde and a reference sonde were attached to the same balloon and the two profiles were compared. The objective of the testing was to determine if TASS thermodynamic and wind data met Space Shuttle Program (SSP) accuracy requirements outlined in the Space Shuttle Launch and Landing Program Requirements Document (PRD).

  5. A portable hydrazine attitude propulsion test system

    NASA Technical Reports Server (NTRS)

    Moynihan, P. I.

    1972-01-01

    The portable hydrazine attitude propulsion module is described that was designed and developed to support the attitude control pitch axis simulation tests performed on an air bearing table for the thermoelectric outer planet spacecraft program. The propulsion module was a self-contained, liquid hydrazine propulsion system from which the exhausted gases were generated within the catalyst bed of either of two nominal 0.22-N opposing thrusters. The module, which was designed for convenient assembly onto and removal from an air bearing table, was tested to establish its operational safety. This test history and the very conservative design of the module enabled it to be man-rated for operation in the presence of personnel. The report briefly summarizes the system operations during air bearing table tests, presents a detailed description of the propulsion module hardware, and discussing the system evolution.

  6. TRMM On Orbit Attitude Control System Performance

    NASA Technical Reports Server (NTRS)

    Robertson, Brent; Placanica, Sam; Morgenstern, Wendy

    1999-01-01

    This paper presents an overview of the Tropical Rainfall Measuring Mission (TRMM) Attitude Control System (ACS) along with detailed in-flight performance results for each operational mode. The TRMM spacecraft is an Earth-pointed, zero momentum bias satellite launched on November 27, 1997 from Tanegashima Space Center, Japan. TRMM is a joint mission between NASA and the National Space Development Agency (NASDA) of Japan designed to monitor and study tropical rainfall and the associated release of energy. Launched to provide a validation for poorly known rainfall data sets generated by global climate models, TRMM has demonstrated its utility by reducing uncertainties in global rainfall measurements by a factor of two. The ACS is comprised of Attitude Control Electronics (ACE), an Earth Sensor Assembly (ESA), Digital Sun Sensors (DSS), Inertial Reference Units (IRU), Three Axis Magnetometers (TAM), Coarse Sun Sensors (CSS), Magnetic Torquer Bars (MTB), Reaction Wheel Assemblies (RWA), Engine Valve Drivers (EVD) and thrusters. While in Mission Mode, the ESA provides roll and pitch axis attitude error measurements and the DSS provide yaw updates twice per orbit. In addition, the TAM in combination with the IRU and DSS can be used to provide pointing in a contingency attitude determination mode which does not rely on the ESA. Although the ACS performance to date has been highly successful, lessons were learned during checkout and initial on-orbit operation. This paper describes the design, on-orbit checkout, performance and lessons learned for the TRMM ACS.

  7. The Parachute System Recovery of the Orion Pad Abort Test 1

    NASA Technical Reports Server (NTRS)

    Machin, Ricardo; Evans, Carol; Madsen, Chris; Morris, Aaron

    2011-01-01

    The Orion Pad Abort Test 1 was conducted at the US Army White Sands Missile range in May 2010. The capsule was successfully recovered using the original design for the parachute recovery system, referred to as the CEV Parachute Assembly System (CPAS). The CPAS was designed to a set of requirements identified prior to the development of the PA-1 test; these requirements were not entirely consistent with the design of the PA-1 test. This presentation will describe the original CPAS design, how the system was modified to accommodate the PA-1 requirements, and what special analysis had to be performed to demonstrate positive margins for the CPAS. The presentation will also discuss the post test analysis and how it compares to the models that were used to design the system.

  8. Optimal control theory determination of feasible return-to-launch-site aborts for the HL-20 Personnel Launch System vehicle

    NASA Astrophysics Data System (ADS)

    Dutton, Kevin E.

    1994-07-01

    The personnel launch system (PLS) being studied by NASA is a system to complement the space shuttle and provide alternative access to space. The PLS consists of a manned spacecraft launched by an expendable launch vehicle (ELV). A candidate for the manned spacecraft is the HL-20 lifting body. In the event of an ELV malfunction during the initial portion of the ascent trajectory, the HL-20 will separate from the rocket and perform an unpowered return to launch site (RTLS) abort. This work details an investigation, using optimal control theory, of the RTLS abort scenario. The objective of the optimization was to maximize final altitude. With final altitude as the cost function, the feasibility of an RTLS abort at different times during the ascent was determined. The method of differential inclusions was used to determine the optimal state trajectories, and the optimal controls were then calculated from the optimal states and state rates.

  9. Modeling, Analysis and Simulation Approaches Used in Development of the National Aeronautics and Space Administration Max Launch Abort System

    NASA Technical Reports Server (NTRS)

    Yuchnovicz, Daniel E.; Dennehy, Cornelius J.; Schuster, David M.

    2011-01-01

    The National Aeronautics and Space Administration (NASA) Engineering and Safety Center was chartered to develop an alternate launch abort system (LAS) as risk mitigation for the Orion Project. Its successful flight test provided data for the design of future LAS vehicles. Design of the flight test vehicle (FTV) and pad abort trajectory relied heavily on modeling and simulation including computational fluid dynamics for vehicle aero modeling, 6-degree-of-freedom kinematics models for flight trajectory modeling, and 3-degree-of-freedom kinematics models for parachute force modeling. This paper highlights the simulation techniques and the interaction between the aerodynamics, flight mechanics, and aerodynamic decelerator disciplines during development of the Max Launch Abort System FTV.

  10. Optimal control theory determination of feasible return-to-launch-site aborts for the HL-20 Personnel Launch System vehicle

    NASA Technical Reports Server (NTRS)

    Dutton, Kevin E.

    1994-01-01

    The personnel launch system (PLS) being studied by NASA is a system to complement the space shuttle and provide alternative access to space. The PLS consists of a manned spacecraft launched by an expendable launch vehicle (ELV). A candidate for the manned spacecraft is the HL-20 lifting body. In the event of an ELV malfunction during the initial portion of the ascent trajectory, the HL-20 will separate from the rocket and perform an unpowered return to launch site (RTLS) abort. This work details an investigation, using optimal control theory, of the RTLS abort scenario. The objective of the optimization was to maximize final altitude. With final altitude as the cost function, the feasibility of an RTLS abort at different times during the ascent was determined. The method of differential inclusions was used to determine the optimal state trajectories, and the optimal controls were then calculated from the optimal states and state rates.

  11. Abortion Counseling

    ERIC Educational Resources Information Center

    Brashear, Diane B.

    1973-01-01

    The author discusses the characteristics and feelings of women undergoing abortion. She mentions the decisions which counselors must help such women face, the information they must be given, and the types of support they need. Increased counseling services are needed, she feels, for the markedly increased number of women seeking abortions. (EK)

  12. Low cost attitude control system scanwheel development

    NASA Technical Reports Server (NTRS)

    Bialke, William; Selby, Vaughn

    1991-01-01

    In order to satisfy a growing demand for low cost attitude control systems for small spacecraft, development of low cost scanning horizon sensor coupled to a low cost/low power consumption Reaction Wheel Assembly was initiated. This report addresses the details of the versatile design resulting from this effort. Tradeoff analyses for each of the major components are included, as well as test data from an engineering prototype of the hardware.

  13. Max Launch Abort System (MLAS) Landing Parachute Demonstrator (LPD) Drop Test

    NASA Technical Reports Server (NTRS)

    Shreves, Christopher M.

    2011-01-01

    The Landing Parachute Demonstrator (LPD) was conceived as a low-cost, rapidly-developed means of providing soft landing for the Max Launch Abort System (MLAS) crew module (CM). Its experimental main parachute cluster deployment technique and off-the-shelf hardware necessitated a full-scale drop test prior to the MLAS mission in order to reduce overall mission risk. This test was successfully conducted at Wallops Flight Facility on March 6, 2009, with all vehicle and parachute systems functioning as planned. The results of the drop test successfully qualified the LPD system for the MLAS flight test. This document captures the design, concept of operations and results of the drop test.

  14. Why do farmers and veterinarians not report all bovine abortions, as requested by the clinical brucellosis surveillance system in France?

    PubMed Central

    2014-01-01

    Background Since 2005, France has been officially free of brucellosis, an infectious disease that causes abortion in cattle and can be transmitted from cattle to humans. Recent animal and human cases have drawn attention to the need to prevent infection of humans and animals from any primary outbreaks. In order to detect any new outbreaks as soon as possible, a clinical surveillance system requires farmers and veterinarians to report each abortion and to test the aborting cow for brucellosis. However, under-reporting limits the sensitivity of this system. Our objective was to identify the barriers and motivations influencing field actors in their decision to report or not to report bovine abortions. We used a qualitative approach with semi-structured interviews of 12 cattle farmers and their eight veterinarians. Results Our analysis showed that four main themes influence the decision-making process of farmers and veterinarians: 1) the perceived risk of brucellosis and other abortive diseases; 2) the definition of a suspected case of brucellosis and other abortive diseases adopted by field actors, which is less sensitive than the mandatory definition; 3) the cost-benefit analysis conducted by actors, taking into account regulatory and health aspects, economic and financial losses, technical and practical factors; 4) the level of cooperation within the socio-technical network. We discussed how early detection may be improved by revising the definition of abortion, extending the time frame for notification and generalising the differential diagnosis of the causes of abortion. Conclusions In contrast to quantitative approaches, qualitative studies can identify the factors (including unknown factors) influencing the decision-making process of field actors and reveal why they take those factors into consideration. Our qualitative study sheds light on the factors underlying the poor sensitivity of clinical brucellosis surveillance system for cattle in France, and suggests

  15. Was the French clinical surveillance system of bovine brucellosis influenced by the occurrence and surveillance of other abortive diseases?

    PubMed

    Bronner, Anne; Morignat, Eric; Touratier, Anne; Gache, Kristel; Sala, Carole; Calavas, Didier

    2015-03-01

    The bovine brucellosis clinical surveillance system implemented in France aims to detect early any case of bovine brucellosis, a disease of which the country has been declared free since 2005. It relies on the mandatory notification of every bovine abortion. Following the spread of the Schmallenberg virus (SBV) in France in 2012 and 2013, and the implementation in 2012 of a clinical surveillance programme of Q fever based on abortion notifications in ten pilot départements, our objective was to study whether these two events influenced the brucellosis clinical surveillance system. The proportion of notifying farmers was analyzed over each semester from June 1, 2009 to June 30, 2013 according to the size and production type of herds, SBV status of départements and the implementation of the Q fever surveillance. Our analysis showed a slight increase in the proportion of notifying farmers as départements became infected by SBV, and after the implementation of Q fever surveillance (during the first semester of 2013). These variations might be explained by an increase in abortion occurrence (congenital deformities in newborns, due to SBV) and/or by an increase in farmers' and veterinarians' awareness (due to the spread of SBV and the implementation of the Q fever surveillance). These results highlight the difficulties in interpreting variations in the proportion of notifying farmers as a consequence of an increase in abortion occurrence. As bovine abortion surveillance can play an important role in the early warning for several diseases, there is a need to explore other ways to monitor abortions in cattle, such as syndromic surveillance using the dates of artificial insemination or calving data.

  16. Orientations toward abortion: guilty or knowledge?

    PubMed

    Allgeier, A R; Allgeier, E R; Rywick, T

    1981-01-01

    Students (N = 118) were classified as pro-choice, anti-abortion, or mixed on the basis of their responses to ten fictitious case histories of females who requested abortion. The distribution of participants on the abortion issue was quite similar to the results of a 1979 national survey. As expected, these groups differed on attitudes toward abortion as murder, the legalization of abortion, and the morality of premarital sex. The groups differed significantly in levels of sex guilt, but did not exhibit significant differences in levels of sexual knowledge. The results were discussed within the context of the public controversy over abortion. It was suggested that the affective messages accompanying the sexual socialization of children and adolescents may be more predictive of orientations toward abortion than the weight of intellectual arguments regarding the rights of the fetus, the point at which a fetus becomes viable, or a woman's right to have control over her own body.

  17. Student Attitudes on Sociomedical Issues: A Follow-Up Survey.

    ERIC Educational Resources Information Center

    Kilwein, John H.; Kilwein, John C.

    1990-01-01

    A study compared student attitudes in the first and last years of a pharmaceutical program toward the health care system, environmental protection, abortion, euthanasia, use of tranquilizers, and family vs. career. On some issues there was considerable change by the final year, while attitudes on other issues remained stable. Females showed the…

  18. Attitude Determination Error Analysis System (ADEAS) mathematical specifications document

    NASA Technical Reports Server (NTRS)

    Nicholson, Mark; Markley, F.; Seidewitz, E.

    1988-01-01

    The mathematical specifications of Release 4.0 of the Attitude Determination Error Analysis System (ADEAS), which provides a general-purpose linear error analysis capability for various spacecraft attitude geometries and determination processes, are presented. The analytical basis of the system is presented. The analytical basis of the system is presented, and detailed equations are provided for both three-axis-stabilized and spin-stabilized attitude sensor models.

  19. Crew Exploration Vehicle Ascent Abort Overview

    NASA Technical Reports Server (NTRS)

    Davidson, John B., Jr.; Madsen, Jennifer M.; Proud, Ryan W.; Merritt, Deborah S.; Sparks, Dean W., Jr.; Kenyon, Paul R.; Burt, Richard; McFarland, Mike

    2007-01-01

    One of the primary design drivers for NASA's Crew Exploration Vehicle (CEV) is to ensure crew safety. Aborts during the critical ascent flight phase require the design and operation of CEV systems to escape from the Crew Launch Vehicle and return the crew safely to the Earth. To accomplish this requirement of continuous abort coverage, CEV ascent abort modes are being designed and analyzed to accommodate the velocity, altitude, atmospheric, and vehicle configuration changes that occur during ascent. The analysis involves an evaluation of the feasibility and survivability of each abort mode and an assessment of the abort mode coverage. These studies and design trades are being conducted so that more informed decisions can be made regarding the vehicle abort requirements, design, and operation. This paper presents an overview of the CEV, driving requirements for abort scenarios, and an overview of current ascent abort modes. Example analysis results are then discussed. Finally, future areas for abort analysis are addressed.

  20. The Road to Pad Abort 1

    NASA Video Gallery

    At the White Sands Missile Range in Las Cruces, N.M., engineers and technicians are preparing for the Pad Abort 1 flight test. The Launch Abort System is a sophisticated new rocket tower designed t...

  1. Evaluation of the Space Shuttle Transatlantic Abort Landing Atmospheric Sounding System

    NASA Technical Reports Server (NTRS)

    Leahy, Frank B.

    2004-01-01

    This paper describes a study that was conducted to determine the quality of thermodynamic and wind data measured by the Space Shuttle Transatlantic Abort Landing (TAL) Atmospheric Sounding System (TASS). The system has Global Positioning System (GPS) tracking capability and provides profiles of atmospheric parameters such as temperature, relative humidity, and wind in support of potential emergency Space Shuttle landings at TAL sites. Ten comparison flights between the Low-Resolution Flight Element (LRFE) of the Automated Meteorological Profiling System (AMPS) and TASS were conducted at the Eastern Test Range (ETR) in early 2002. Initial results indicated that wind, temperature, and relative humidity compared well. However, incorrect GPS settings in the TASS software were resulting in altitude differences of about 60 to 70 m (approximately 200 to 230 ft) and air pressure differences of approximately 4 hectoPascals (hPa). TASS software updates to correct altitude data were completed in early 2003. Subsequent testing showed that altitude and air pressure differences were generally less than 5 m and 1 hPa, respectively.

  2. MSFC Skylab attitude and pointing control system mission evaluation

    NASA Technical Reports Server (NTRS)

    Chubb, W. B.

    1974-01-01

    The results of detailed performance analyses of the attitude and pointing control system in-orbit hardware and software on Skylab are reported. Performance is compared with requirements, test results, and prelaunch predictions. A brief history of the altitude and pointing control system evolution leading to the launch configuration is presented. The report states that the attitude and pointing system satisfied all requirements.

  3. Spacecraft attitude and velocity control system

    NASA Technical Reports Server (NTRS)

    Paluszek, Michael A. (Inventor); Piper, Jr., George E. (Inventor)

    1992-01-01

    A spacecraft attitude and/or velocity control system includes a controller which responds to at least attitude errors to produce command signals representing a force vector F and a torque vector T, each having three orthogonal components, which represent the forces and torques which are to be generated by the thrusters. The thrusters may include magnetic torquer or reaction wheels. Six difference equations are generated, three having the form ##EQU1## where a.sub.j is the maximum torque which the j.sup.th thruster can produce, b.sub.j is the maximum force which the j.sup.th thruster can produce, and .alpha..sub.j is a variable representing the throttling factor of the j.sup.th thruster, which may range from zero to unity. The six equations are summed to produce a single scalar equation relating variables .alpha..sub.j to a performance index Z: ##EQU2## Those values of .alpha. which maximize the value of Z are determined by a method for solving linear equations, such as a linear programming method. The Simplex method may be used. The values of .alpha..sub.j are applied to control the corresponding thrusters.

  4. Upgrade of the beam transport lines and the beam-abort system and development of a tune compensator in KEKB

    NASA Astrophysics Data System (ADS)

    Iida, Naoko; Kikuchi, Mitsuo; Mimashi, Toshihiro; Nakayama, Hisayoshi; Sakamoto, Yutaka; Satoh, Kotaro; Takasaki, Seiji; Tawada, Masafumi

    2013-03-01

    The KEKB collider achieved a maximum peak luminosity of 2.1×1034 cm-2 s-1 and an integrated luminosity of 1 ab-1 in its ten-year operation. Behind these glorious records there have been uncountable improvements in every subsystem. This paper describes the improvements in the beam transport line, injection kickers, septum magnets, the beam-abort system, and a newly developed pulsed-quadrupole system in detail.

  5. Abortion ethics.

    PubMed

    Fromer, M J

    1982-04-01

    Nurses have opinions about abortion, but because they are health professionals and their opinions are sought as such, they are obligated to understand why they hold certain views. Nurses need to be clear about why they believe as they do, and they must arrive at a point of view in a rational and logical manner. To assist nurses in this task, the ethical issues surrounding abortion are enumerated and clarified. To do this, some of the philosophic and historic approaches to abortion and how a position can be logically argued are examined. At the outset some emotion-laden terms are defined. Abortion is defined as the expulsion of a fetus from the uterus before 28 weeks' gestation, the arbitrarily established time of viability. This discussion is concerned only with induced abortion. Since the beginning of recorded history women have chosen to have abortions. Early Jews and Christians forbade abortion on practical and religious grounds. A human life was viewed as valuable, and there was also the practical consideration of the addition of another person to the population, i.e., more brute strength to do the necessary physical work, defend against enemies, and ensure the continuation of the people. These kinds of pragmatic reasons favoring or opposing abortion have little to do with the Western concept of abortion in genaeral and what is going on in the U.S. today in particular. Discussion of the ethics of abortion must rest on 1 or more of several foundations: whether or not the fetus is a human being; the rights of the pregnant woman as opposed to those of the fetus, and circumstances of horror and hardship that might surround a pregnancy. Viability is relative. Because viability is not a specific descriptive entity, value judgments become part of the determination, both of viability and the actions that might be taken based on that determination. The fetus does not become a full human being at viability. That occurs only at conception or birth, depending on one's view

  6. Abortion in Thailand: a feminist perspective.

    PubMed

    Lerdmaleewong, M; Francis, C

    1998-01-01

    With the passing of the Fourth World Conference on Women in Beijing, China, women's issues in Asia have moved increasingly to the forefront. One such issue, abortion, continues to generate controversy as many women argue for protection and/or recognition of their reproductive rights. The objectives of this paper are threefold: (1) To examine the abortion debate in Thailand, identifying issues raised by Thai feminist scholars about the status of women; (2) To overview some of the more prominent feminist arguments regarding abortion (particularly those written by Canadian and American scholars) as a tool for defining women's reproductive rights; (3) To focus on a study of attitudes toward abortion among health care personnel and post-induced abortion patients in Bangkok, Thailand in order to discern the degree of support (if any) for feminist abortion arguments.

  7. Spontaneous abortion is associated with elevated systemic C5a and reduced mRNA of complement inhibitory proteins in placenta.

    PubMed

    Banadakoppa, M; Chauhan, M S; Havemann, D; Balakrishnan, M; Dominic, J S; Yallampalli, C

    2014-09-01

    Spontaneous abortion in early pregnancy due to unknown reasons is a common problem. The excess complement activation and consequent placental inflammation and anti-angiogenic milieu is emerging as an important associated factor in many pregnancy-related complications. In the present study we sought to examine the expression of complement inhibitory proteins at the feto-maternal interface and levels of complement split products in the circulation to understand their role in spontaneous abortion. Consenting pregnant women who either underwent elective abortion due to non-clinical reasons (n = 13) or suffered miscarriage (n = 14) were recruited for the study. Systemic levels of complement factors C3a and C5a were measured by enzyme-linked immunosorbent assay (ELISA). Plasma C5 and C3 protein levels were examined by Western blot. Expressions of complement regulatory proteins such as CD46 and CD55 in the decidua were investigated by quantitative polymerase chain reaction (PCR) and Western blot. The median of plasma C3a level was 82·83 ng/ml and 66·17 ng/ml in elective and spontaneous abortion patients, respectively. Medians of plasma C5a levels in elective and spontaneous abortion patients were 0·96 ng/ml and 1·14 ng/ml, respectively. Only plasma C5a levels but not C3a levels showed significant elevation in spontaneous abortion patients compared to elective abortion patients. Further, there was a threefold decrease in the mRNA expressions of complement inhibitory proteins CD46 and CD55 in the decidua obtained from spontaneous abortion patients compared to that of elective abortion patients. These data suggested that dysregulated complement cascade may be associated with spontaneous abortion.

  8. Launch Vehicle Failure Dynamics and Abort Triggering Analysis

    NASA Technical Reports Server (NTRS)

    Hanson, John M.; Hill, Ashely D.; Beard, Bernard B.

    2011-01-01

    Launch vehicle ascent is a time of high risk for an on-board crew. There are many types of failures that can kill the crew if the crew is still on-board when the failure becomes catastrophic. For some failure scenarios, there is plenty of time for the crew to be warned and to depart, whereas in some there is insufficient time for the crew to escape. There is a large fraction of possible failures for which time is of the essence and a successful abort is possible if the detection and action happens quickly enough. This paper focuses on abort determination based primarily on data already available from the GN&C system. This work is the result of failure analysis efforts performed during the Ares I launch vehicle development program. Derivation of attitude and attitude rate abort triggers to ensure that abort occurs as quickly as possible when needed, but that false positives are avoided, forms a major portion of the paper. Some of the potential failure modes requiring use of these triggers are described, along with analysis used to determine the success rate of getting the crew off prior to vehicle demise.

  9. Abortion: a guide to making ethical choices.

    PubMed

    Maguire, M R; Maguire, D C

    1983-09-01

    A mature attitude toward abortion rests on responsible decision-making and action taking, not on the belief in irreversible events. Abortion is therefore a choice which should be made if it is the most correct and responsible action in view of one's own circumstances. There are a number of doubts, concerns and moral--as opposed to medical--questions that women may be asking themselves as they face this serious choice. The guide addresses these issues to help women think through that choice. It is important to know, for instance, that the Pope has never formally proclaimed a doctrine of faith on the matter of abortion. The Catholic Church, when considered in its diversity, teaches that some abortions can be moral; the conscience of a person is the final arbiter of any abortion decision. Conscience is humans' progressively refined ability to think about situations and evaluate their moral goodness/badness. With respect to abortion, this means that a woman should make the choice that seems best to her. The fear that having an abortion will result in excommunication from the Church is dismissed here. A distinction must be made between committing the sin of abortion and having an abortion. The former obtains when people act against their own conscience. The attitude toward abortion as murder and the issue of the fetus' afterlife are responded to in terms of personhood, a complicated concept on which there is no legal, scientific or religious consensus. Instead, the answer is a function of the time period and its prevalent beliefs. Today, the viability of the fetus has become an important determinant of life. Having an abortion, giving birth, and use of contraceptives when no children are wanted, are responses to which a woman is entitled. Her choice is moral when based on responsible and conscious decisions and actions. The views of Protestantism and Judaism on abortion are clarified briefly.

  10. STS-1 operational flight profile. Volume 6: Abort analysis

    NASA Technical Reports Server (NTRS)

    1980-01-01

    The abort analysis for the cycle 3 Operational Flight Profile (OFP) for the Space Transportation System 1 Flight (STS-1) is defined, superseding the abort analysis previously presented. Included are the flight description, abort analysis summary, flight design groundrules and constraints, initialization information, general abort description and results, abort solid rocket booster and external tank separation and disposal results, abort monitoring displays and discussion on both ground and onboard trajectory monitoring, abort initialization load summary for the onboard computer, list of the key abort powered flight dispersion analysis.

  11. Orion Abort Flight Test

    NASA Technical Reports Server (NTRS)

    Hayes, Peggy Sue

    2010-01-01

    The purpose of NASA's Constellation project is to create the new generation of spacecraft for human flight to the International Space Station in low-earth orbit, the lunar surface, as well as for use in future deep-space exploration. One portion of the Constellation program was the development of the Orion crew exploration vehicle (CEV) to be used in spaceflight. The Orion spacecraft consists of a crew module, service module, space adapter and launch abort system. The crew module was designed to hold as many as six crew members. The Orion crew exploration vehicle is similar in design to the Apollo space capsules, although larger and more massive. The Flight Test Office is the responsible flight test organization for the launch abort system on the Orion crew exploration vehicle. The Flight Test Office originally proposed six tests that would demonstrate the use of the launch abort system. These flight tests were to be performed at the White Sands Missile Range in New Mexico and were similar in nature to the Apollo Little Joe II tests performed in the 1960s. The first flight test of the launch abort system was a pad abort (PA-1), that took place on 6 May 2010 at the White Sands Missile Range in New Mexico. Primary flight test objectives were to demonstrate the capability of the launch abort system to propel the crew module a safe distance away from a launch vehicle during a pad abort, to demonstrate the stability and control characteristics of the vehicle, and to determine the performance of the motors contained within the launch abort system. The focus of the PA-1 flight test was engineering development and data acquisition, not certification. In this presentation, a high level overview of the PA-1 vehicle is given, along with an overview of the Mobile Operations Facility and information on the White Sands tracking sites for radar & optics. Several lessons learned are presented, including detailed information on the lessons learned in the development of wind

  12. Safety improvement issues for mission aborts of future space transportation systems.

    PubMed

    Mayrhofer, M; Wächter, M; Sachs, G

    2006-01-01

    Two-stage winged space access vehicles consisting of a carrier stage with airbreathing turbo/ram jet engines and a rocket propelled orbital stage which may significantly reduce space transport costs and have additional advantages offer a great potential for mission safety improvements. Formulating the nominal mission and abort scenarios caused by engine malfunctions as an optimal control problem allows full exploitation of safety capabilities. The shaping of the nominal mission has a significant impact on the prospective safety. For this purpose, most relevant mission aborts are considered together with the nominal mission, treating them as an optimization problem of branched trajectories where the branching point is not fixed. The applied procedure yields a safety improved nominal trajectory, showing the feasibility of the included mission aborts with minimum payload penalty. The other mission aborts can be separately treated, with the initial condition given by the state of the nominal trajectory at the time when a failure occurs. A mission abort plan is set up, covering all emergency scenarios. PMID:16480117

  13. Safety improvement issues for mission aborts of future space transportation systems.

    PubMed

    Mayrhofer, M; Wächter, M; Sachs, G

    2006-01-01

    Two-stage winged space access vehicles consisting of a carrier stage with airbreathing turbo/ram jet engines and a rocket propelled orbital stage which may significantly reduce space transport costs and have additional advantages offer a great potential for mission safety improvements. Formulating the nominal mission and abort scenarios caused by engine malfunctions as an optimal control problem allows full exploitation of safety capabilities. The shaping of the nominal mission has a significant impact on the prospective safety. For this purpose, most relevant mission aborts are considered together with the nominal mission, treating them as an optimization problem of branched trajectories where the branching point is not fixed. The applied procedure yields a safety improved nominal trajectory, showing the feasibility of the included mission aborts with minimum payload penalty. The other mission aborts can be separately treated, with the initial condition given by the state of the nominal trajectory at the time when a failure occurs. A mission abort plan is set up, covering all emergency scenarios.

  14. SUICIDE, PSYCHIATRISTS AND THERAPEUTIC ABORTION.

    PubMed

    ROSENBERG, A J; SILVER, E

    1965-06-01

    Pressures for interruption of pregnancy by therapeutic abortion constantly increase, both for liberalization of laws and for interpreting existing law more broadly. There are wide variations and inconsistencies in psychiatric attitudes and practices about therapeutic abortion. Follow-up patient data are scant, but necessary. Results of questionnaires indicate that such data can be obtained, and convey the impression that patients seem to manage after pregnancy, regardless of outcome, much as they had before pregnancy. This study indicates that the incidence of suicide in pregnant women is approximately one-sixth that of the rate for non-pregnant women in comparable age groups, implying that perhaps pregnancy has a psychically protective role.

  15. Adaptive Jacobian Fuzzy Attitude Control for Flexible Spacecraft Combined Attitude and Sun Tracking System

    NASA Astrophysics Data System (ADS)

    Chak, Yew-Chung; Varatharajoo, Renuganth

    2016-07-01

    Many spacecraft attitude control systems today use reaction wheels to deliver precise torques to achieve three-axis attitude stabilization. However, irrecoverable mechanical failure of reaction wheels could potentially lead to mission interruption or total loss. The electrically-powered Solar Array Drive Assemblies (SADA) are usually installed in the pitch axis which rotate the solar arrays to track the Sun, can produce torques to compensate for the pitch-axis wheel failure. In addition, the attitude control of a flexible spacecraft poses a difficult problem. These difficulties include the strong nonlinear coupled dynamics between the rigid hub and flexible solar arrays, and the imprecisely known system parameters, such as inertia matrix, damping ratios, and flexible mode frequencies. In order to overcome these drawbacks, the adaptive Jacobian tracking fuzzy control is proposed for the combined attitude and sun-tracking control problem of a flexible spacecraft during attitude maneuvers in this work. For the adaptation of kinematic and dynamic uncertainties, the proposed scheme uses an adaptive sliding vector based on estimated attitude velocity via approximate Jacobian matrix. The unknown nonlinearities are approximated by deriving the fuzzy models with a set of linguistic If-Then rules using the idea of sector nonlinearity and local approximation in fuzzy partition spaces. The uncertain parameters of the estimated nonlinearities and the Jacobian matrix are being adjusted online by an adaptive law to realize feedback control. The attitude of the spacecraft can be directly controlled with the Jacobian feedback control when the attitude pointing trajectory is designed with respect to the spacecraft coordinate frame itself. A significant feature of this work is that the proposed adaptive Jacobian tracking scheme will result in not only the convergence of angular position and angular velocity tracking errors, but also the convergence of estimated angular velocity to

  16. Design and Analysis of Outer Mold Line Close-outs for the Max Launch Abort System (MLAS) Flight Experiment

    NASA Technical Reports Server (NTRS)

    Woods-Vedeler, Jessica A.; Knutson, Jeffrey R.; Schuster, David M.; Tyler, Erik D.

    2010-01-01

    In 2007, the NASA Exploration Systems Mission Directorate (ESMD) chartered the NASA Engineering Safety Center (NESC) to demonstrate an alternate launch abort concept as risk mitigation for the Orion project's baseline "tower" design. On July 8, 2009, a full scale, passive aerodynamically stabilized Max Launch Abort System (MLAS) pad abort demonstrator was successfully launched from NASA Goddard Space Flight Center's Wallops Flight Facility. Aerodynamic close-outs were required to cover openings on the MLAS fairing to prevent aerodynamic flow-through and to maintain the MLAS OML surface shape. Two-ply duct tape covers were designed to meet these needs. The duct tape used was a high strength fiber reinforced duct tape with a rubberized adhesive that demonstrated 4.6 lb/in adhesion strength to the unpainted fiberglass fairing. Adhesion strength was observed to increase as a function of time. The covers were analyzed and experimentally tested to demonstrate their ability to maintain integrity under anticipated vehicle ascent pressure loads and to not impede firing of the drogue chute mortars. Testing included vacuum testing and a mortar fire test. Tape covers were layed-up on thin Teflon sheets to facilitate installation on the vehicle. Custom cut foam insulation board was used to fill mortar hole and separation joint cavities and provide support to the applied tape covers. Flight test results showed that the tape covers remained adhered during flight.

  17. Attitude ground support system for the solar maximum mission spacecraft

    NASA Technical Reports Server (NTRS)

    Nair, G.

    1980-01-01

    The SMM attitude ground support system (AGSS) supports the acquisition of spacecraft roll attitude reference, performs the in-flight calibration of the attitude sensor complement, supports onboard control autonomy via onboard computer data base updates, and monitors onboard computer (OBC) performance. Initial roll attitude acquisition is accomplished by obtaining a coarse 3 axis attitude estimate from magnetometer and Sun sensor data and subsequently refining it by processing data from the fixed head star trackers. In-flight calibration of the attitude sensor complement is achieved by processing data from a series of slew maneuvers designed to maximize the observability and accuracy of the appropriate alignments and biases. To ensure autonomy of spacecraft operation, the AGSS selects guide stars and computes sensor occultation information for uplink to the OBC. The onboard attitude control performance is monitored on the ground through periodic attitude determination and processing of OBC data in downlink telemetry. In general, the control performance has met mission requirements. However, software and hardware problems have resulted in sporadic attitude reference losses.

  18. Dynamics and nonlinear attitude control of multibody space systems

    NASA Astrophysics Data System (ADS)

    Rui, Chunlei

    In this dissertation, we study dynamics and attitude control problems for a multibody system in space. The key feature of this work is the systematic use of shape changes as three dimensional attitude controls. Control models are identified for a general class of multibody space systems that are controlled by thrusters, reaction wheels, and/or joint actuators. The important role of shape change in attitude maneuvers for a multibody space system is identified and shape change is recognized as a means of attitude control. Formulas that quantify three dimensional attitude changes induced by periodic shape changes, rotation of reaction wheels and nonzero angular momentum are developed. The formulas prove fundamental for development of numerous attitude control algorithms. Explicit construction procedures are developed for shape changes that accomplish a desired three dimensional reconfiguration of a free-floating multibody space system with zero angular momentum with prescribed accuracy. The control computation involves evaluation of certain Lie brackets and solution of a simple system of algebraic equations. Explicit construction procedures are developed for shape changes that accomplish a desired three dimensional reorientation of a free-floating multibody space system with constant nonzero angular momentum with prescribed accuracy. Control algorithms are provided for reorientation of a multibody space system to one of its relative equilibria. Explicit control algorithms are developed for reaction wheel and shape changes that accomplish a desired three dimensional reorientation for a spacecraft system containing a single reaction wheel and a single movable appendage. Characterization of shape changes that enhance effectiveness of reaction wheels and joint actuators is given, and control algorithms are provided for effective simultaneous attitude changes and shape changes. Feedback attitude control laws are developed for three dimensional attitude maneuvers of a

  19. Federated nonlinear predictive filtering for the gyroless attitude determination system

    NASA Astrophysics Data System (ADS)

    Zhang, Lijun; Qian, Shan; Zhang, Shifeng; Cai, Hong

    2016-11-01

    This paper presents a federated nonlinear predictive filter (NPF) for the gyroless attitude determination system with star sensor and Global Positioning System (GPS) sensor. This approach combines the good qualities of both the NPF and federated filter. In order to combine them, the equivalence relationship between the NPF and classical Kalman filter (KF) is demonstrated from algorithm structure and estimation criterion. The main features of this approach include a nonlinear predictive filtering algorithm to estimate uncertain model errors and determine the spacecraft attitude by using attitude kinematics and dynamics, and a federated filtering algorithm to process measurement data from multiple attitude sensors. Moreover, a fault detection and isolation algorithm is applied to the proposed federated NPF to improve the estimation accuracy even when one sensor fails. Numerical examples are given to verify the navigation performance and fault-tolerant performance of the proposed federated nonlinear predictive attitude determination algorithm.

  20. The abortion issue in the 1984 elections.

    PubMed

    Granberg, D

    1987-01-01

    In the 1984 election, Ronald Reagan, the Republican presidential incumbent and an opponent of legal abortion, defeated Walter Mondale, a prochoice Democrat, by a wide margin. Despite Reagan's sweep of 49 states, however, conservatives lost a little ground in the Senate, where four of the seven new senators elected take a prochoice position on abortion. On the other hand, antiabortion forces registered some gains in the House of Representatives. The voting groups were more divided over the abortion issue in 1984 than they had been in 1980: In 1980, Reagan voters and Carter voters did not differ significantly in their attitudes toward abortion, but in 1984, Reagan voters were significantly more likely to be opposed to abortion than were Mondale voters. Nevertheless, only a small minority of voters considered abortion to be a major national issue, and the two voter groups were far more divided on several other issues than they were on abortion. There was no antiabortion consensus among the electorate as a whole, or among Reagan voters in particular. The level of approval for legalized abortion has, in fact, remained quite stable since 1973, and a popular base in favor of banning abortion seems to be lacking. PMID:3595819

  1. Public opinion about abortion-related stigma among Mexican Catholics and implications for unsafe abortion.

    PubMed

    McMurtrie, Stephanie M; García, Sandra G; Wilson, Kate S; Diaz-Olavarrieta, Claudia; Fawcett, Gillian M

    2012-09-01

    A nationally representative survey was conducted among 3000 Catholics in Mexico during 2009 and 2010. Respondents were presented with a hypothetical situation about a young woman who decided to have an abortion and were asked their personal opinion of her. On the basis of a stigma index, it was found that the majority (61%) had stigmatizing attitudes about abortion; however, 81% believed that abortion should be legal in at least some circumstances. Respondents were significantly more likely to stigmatize abortion if they disagreed with the Mexico City law legalizing the procedure (odds ratio 1.66; 95% CI, 1.30-2.11) and believed that abortion should be prohibited in all cases (odds ratio 3.13; 95% CI, 2.28-4.30). Such stigma can lead women to seek unsafe abortions to avoid judgment by society.

  2. Use of Heated Helium to Simulate Surface Pressure Fluctuations on the Launch Abort Vehicle During Abort Motor Firing

    NASA Technical Reports Server (NTRS)

    Panda, Jayanta; James, George H.; Burnside, Nathan J.; Fong, Robert; Fogt, Vincent A.

    2011-01-01

    The solid-rocket plumes from the Abort motor of the Multi-Purpose Crew Vehicle (MPCV, also know as Orion) were simulated using hot, high pressure, Helium gas to determine the surface pressure fluctuations on the vehicle in the event of an abort. About 80 different abort situations over a wide Mach number range, (0.3< or =M< or =1.2) and vehicle attitudes (+/-15deg) were simulated inside the NASA Ames Unitary Plan, 11-Foot Transonic Wind Tunnel. For each abort case, typically two different Helium plume and wind tunnel conditions were used to bracket different flow matching critera. This unique, yet cost-effective test used a custom-built hot Helium delivery system, and a 6% scale model of a part of the MPCV, known as the Launch Abort Vehicle. The test confirmed the very high level of pressure fluctuations on the surface of the vehicle expected during an abort. In general, the fluctuations were found to be dominated by the very near-field hydrodynamic fluctuations present in the plume shear-layer. The plumes were found to grow in size for aborts occurring at higher flight Mach number and altitude conditions. This led to an increase in the extent of impingement on the vehicle surfaces; however, unlike some initial expectations, the general trend was a decrease in the level of pressure fluctuations with increasing impingement. In general, the highest levels of fluctuations were found when the outer edges of the plume shear layers grazed the vehicle surface. At non-zero vehicle attitudes the surface pressure distributions were found to become very asymmetric. The data from these wind-tunnel simulations were compared against data collected from the recent Pad Abort 1 flight test. In spite of various differences between the transient flight situation and the steady-state wind tunnel simulations, the hot-Helium data were found to replicate the PA1 data fairly reasonably. The data gathered from this one-of-a-kind wind-tunnel test fills a gap in the manned-space programs

  3. Magnetospheric Multiscale (MMS) Mission Attitude Ground System Design

    NASA Technical Reports Server (NTRS)

    Sedlak, Joseph E.; Superfin, Emil; Raymond, Juan C.

    2011-01-01

    This paper presents an overview of the attitude ground system (AGS) currently under development for the Magnetospheric Multiscale (MMS) mission. The primary responsibilities for the MMS AGS are definitive attitude determination, validation of the onboard attitude filter, and computation of certain parameters needed to improve maneuver performance. For these purposes, the ground support utilities include attitude and rate estimation for validation of the onboard estimates, sensor calibration, inertia tensor calibration, accelerometer bias estimation, center of mass estimation, and production of a definitive attitude history for use by the science teams. Much of the AGS functionality already exists in utilities used at NASA's Goddard Space Flight Center with support heritage from many other missions, but new utilities are being created specifically for the MMS mission, such as for the inertia tensor, accelerometer bias, and center of mass estimation. Algorithms and test results for all the major AGS subsystems are presented here.

  4. Predictive Attitude Estimation Using Global Positioning System Signals

    NASA Technical Reports Server (NTRS)

    Crassidis, John L.; Markley, F. Landis; Lightsey, E. Glenn; Ketchum, Eleanor

    1997-01-01

    In this paper, a new algorithm is developed for attitude estimation using Global Positioning System (GPS) signals. The new algorithm is based on a predictive filtering scheme designed for spacecraft without rate measuring devices. The major advantage of this new algorithm over traditional Kalman filter approaches is that the model error is not assumed to represented by an unbiased Gaussian noise process with known covariance, but instead is determined during the estimation process. This is achieved by simultaneously solving system optimality conditions and an output error constraint. This approach is well suited for GPS attitude estimation since some error sources that contribute to attitude inaccuracy, such as signal multipath, are known to be non-Gaussian processes. Also, the predictive filter scheme can use either GPS signals or vector observations or a combination of both for attitude estimation, so that performance characteristics can be maintained during periods of GPS attitude sensor outage. The performance of the new algorithm is tested using flight data from the REX-2 spacecraft. Results are shown using the predictive filter to estimate the attitude from both GPS signals and magnetometer measurements, and comparing that solution to a magnetometer-only based solution. Results using the new estimation algorithm indicate that GPS-based solutions are verified to within 2 degrees using the magnetometer cross-check for the REX-2 spacecraft. GPS attitude accuracy of better than 1 degree is expected per axis, but cannot be reliably proven due to inaccuracies in the magnetic field model.

  5. Systemic mycoplasmosis with dystocia and abortion in a North American bison (Bison bison) herd.

    PubMed

    Register, Karen B; Woodbury, Murray R; Davies, Jennifer L; Trujillo, Jessie D; Perez-Casal, José; Burrage, Patrick H; Clark, Edward G; Windeyer, M Claire

    2013-07-01

    The current study describes a fatal Mycoplasma bovis infection in a North American bison (Bison bison) cow and her aborted fetus in a herd suffering unusual mortality associated with dystocia and abortion. Postmortem evaluation of the subject case found severe caseonecrotic bronchopneumonia, chronic fibrinous pleuritis and pulmonary sequestra, foci of caseous necrosis in the kidneys, and necrotizing endometritis and placentitis. Histologic findings in the maternal tissues include endometrial and placental necrotizing vasculitis and changes in the lung similar to those previously described for M. bovis-associated pneumonia in feedlot bison. Gross and microscopic lesions were not observed in the fetus. Maternal lung, uterus, kidney, and placenta as well as fetal lung and kidney were positive for M. bovis by polymerase chain reaction (PCR) as were the Mycoplasma-like colonies cultured from these tissues. The presence of M. bovis in maternal and fetal tissues was further demonstrated using nucleic acid extracts in a pan-Mycoplasma SYBR Green PCR assay targeting the 16S-23S ribosomal RNA spacer region with post-PCR dissociation curve analysis and sequencing of the resulting amplicons. Immunohistochemistry (IHC) testing on maternal lung and uterine caruncle was strongly positive for M. bovis antigen. A variety of methods, including culture, PCR, and IHC, failed to identify other bacterial or viral pathogens in any of the tissues evaluated. These data are the first to implicate M. bovis as a cause of placentitis and abortion in bison.

  6. [Recurrent spontaneous abortions].

    PubMed

    Salat-Baroux, J

    1988-01-01

    supplementation. In the third group, the autoimmune diseases, especially systemic lupus erythematosus (SLE) are most likely a cause of fetal wastage, by secreting antibodies that cross-react with the antigenic determinants of the trophoblast. These patients should be screened for lupus like anticoagulant; the therapy with glucocorticoids during pregnancy is still debated. More recently, the immunologic factors have been estimated to play an important role in the etiology of usual abortion: in these cases women share HLA antigens with their partners more frequently than expected.(ABSTRACT TRUNCATED AT 400 WORDS)

  7. Two steps back: Poland's new abortion law.

    PubMed

    Nowicka, W

    1993-06-01

    Parenthood was established in 1992 and presently has 9 member organizations dedicated to reestablishing legal abortion and to helping women avoid unwanted pregnancies through sex education and contraception. Polls show that the new abortion law dose not reflect the favorable attitude of a majority of the Polish people toward legal abortion. It is unfortunate that Polish women will now have to fight for the rights that were once given to them.

  8. Advanced Integrated Power and Attitude Control System (IPACS) study

    NASA Technical Reports Server (NTRS)

    Oglevie, R. E.; Eisenhaure, D. B.

    1985-01-01

    Integrated Power and Attitude Control System (IPACS) studies performed over a decade ago established the feasibility of simultaneously satisfying the demands of energy storage and attitude control through the use of rotating flywheels. It was demonstrated that, for a wide spectrum of applications, such a system possessed many advantages over contemporary energy storage and attitude control approaches. More recent technology advances in composite material rotors, magnetic suspension systems, and power control electronics have triggered new optimism regarding the applicability and merits of this concept. This study is undertaken to define an advanced IPACS and to evaluate its merits for a space station application. System and component designs are developed to establish the performance of this concept and system trade studies conducted to examine the viability of this approach relative to conventional candidate systems. It is clearly demonstrated that an advanced IPACS concept is not only feasible, but also offers substantial savings in mass and life-cycle cost for the space station mission.

  9. Attitude Control System Design for the Solar Dynamics Observatory

    NASA Technical Reports Server (NTRS)

    Starin, Scott R.; Bourkland, Kristin L.; Kuo-Chia, Liu; Mason, Paul A. C.; Vess, Melissa F.; Andrews, Stephen F.; Morgenstern, Wendy M.

    2005-01-01

    The Solar Dynamics Observatory mission, part of the Living With a Star program, will place a geosynchronous satellite in orbit to observe the Sun and relay data to a dedicated ground station at all times. SDO remains Sun- pointing throughout most of its mission for the instruments to take measurements of the Sun. The SDO attitude control system is a single-fault tolerant design. Its fully redundant attitude sensor complement includes 16 coarse Sun sensors, a digital Sun sensor, 3 two-axis inertial reference units, 2 star trackers, and 4 guide telescopes. Attitude actuation is performed using 4 reaction wheels and 8 thrusters, and a single main engine nominally provides velocity-change thrust. The attitude control software has five nominal control modes-3 wheel-based modes and 2 thruster-based modes. A wheel-based Safehold running in the attitude control electronics box improves the robustness of the system as a whole. All six modes are designed on the same basic proportional-integral-derivative attitude error structure, with more robust modes setting their integral gains to zero. The paper details the mode designs and their uses.

  10. A Dynamic Attitude Measurement System Based on LINS

    PubMed Central

    Li, Hanzhou; Pan, Quan; Wang, Xiaoxu; Zhang, Juanni; Li, Jiang; Jiang, Xiangjun

    2014-01-01

    A dynamic attitude measurement system (DAMS) is developed based on a laser inertial navigation system (LINS). Three factors of the dynamic attitude measurement error using LINS are analyzed: dynamic error, time synchronization and phase lag. An optimal coning errors compensation algorithm is used to reduce coning errors, and two-axis wobbling verification experiments are presented in the paper. The tests indicate that the attitude accuracy is improved 2-fold by the algorithm. In order to decrease coning errors further, the attitude updating frequency is improved from 200 Hz to 2000 Hz. At the same time, a novel finite impulse response (FIR) filter with three notches is designed to filter the dither frequency of the ring laser gyro (RLG). The comparison tests suggest that the new filter is five times more effective than the old one. The paper indicates that phase-frequency characteristics of FIR filter and first-order holder of navigation computer constitute the main sources of phase lag in LINS. A formula to calculate the LINS attitude phase lag is introduced in the paper. The expressions of dynamic attitude errors induced by phase lag are derived. The paper proposes a novel synchronization mechanism that is able to simultaneously solve the problems of dynamic test synchronization and phase compensation. A single-axis turntable and a laser interferometer are applied to verify the synchronization mechanism. The experiments results show that the theoretically calculated values of phase lag and attitude error induced by phase lag can both match perfectly with testing data. The block diagram of DAMS and physical photos are presented in the paper. The final experiments demonstrate that the real-time attitude measurement accuracy of DAMS can reach up to 20″ (1σ) and the synchronization error is less than 0.2 ms on the condition of three axes wobbling for 10 min. PMID:25177802

  11. A dynamic attitude measurement system based on LINS.

    PubMed

    Li, Hanzhou; Pan, Quan; Wang, Xiaoxu; Zhang, Juanni; Li, Jiang; Jiang, Xiangjun

    2014-01-01

    A dynamic attitude measurement system (DAMS) is developed based on a laser inertial navigation system (LINS). Three factors of the dynamic attitude measurement error using LINS are analyzed: dynamic error, time synchronization and phase lag. An optimal coning errors compensation algorithm is used to reduce coning errors, and two-axis wobbling verification experiments are presented in the paper. The tests indicate that the attitude accuracy is improved 2-fold by the algorithm. In order to decrease coning errors further, the attitude updating frequency is improved from 200 Hz to 2000 Hz. At the same time, a novel finite impulse response (FIR) filter with three notches is designed to filter the dither frequency of the ring laser gyro (RLG). The comparison tests suggest that the new filter is five times more effective than the old one. The paper indicates that phase-frequency characteristics of FIR filter and first-order holder of navigation computer constitute the main sources of phase lag in LINS. A formula to calculate the LINS attitude phase lag is introduced in the paper. The expressions of dynamic attitude errors induced by phase lag are derived. The paper proposes a novel synchronization mechanism that is able to simultaneously solve the problems of dynamic test synchronization and phase compensation. A single-axis turntable and a laser interferometer are applied to verify the synchronization mechanism. The experiments results show that the theoretically calculated values of phase lag and attitude error induced by phase lag can both match perfectly with testing data. The block diagram of DAMS and physical photos are presented in the paper. The final experiments demonstrate that the real-time attitude measurement accuracy of DAMS can reach up to 20″ (1σ) and the synchronization error is less than 0.2 ms on the condition of three axes wobbling for 10 min. PMID:25177802

  12. [Risks in legal, induced abortion. Review of the literature].

    PubMed

    Stamm, H E

    1980-01-01

    A literature review is presented about the risks of induced abortion, as indicated in research from Switzerland and other countries of the world. The attitude of the various countries toward abortion appears to be becoming more liberal. The incidence of legal induced abortions has decreased slightly over the past years, despite more liberal abortion laws. Switzerland lies about in the middle of the scale, with 139 abortions/1000 women and 227/1000 births in 1974. The mortality associated with induced abortion is 1-4 deaths to 100,000 pregnancies, which is about the same risk as 10 years' use of the IUD or oral contraceptives. Most of the deaths occur when abortion is induced after the 16th week of pregnancy. About 10% of all complications of abortion are serious. The complication rate of abortion is highest in patients who undergo hysterotomy or hysterectomy and lowest for those undergoing the Karmen method or vacuum aspiration. No studies have shown a significant increase in the incidence of spontaneous abortions, of cervical insufficiency, of premature births, and of small-for-date babies as a consequence of having undergone induced abortion. There is a tendency, for these complications to occur, especially when dilatation beyond 10 mm is necessary or when the pregnancy is in an advanced stage. It is important to remember, however, that similar tendencies are observed among multiparae, and that the risks of abortion are less than those of childbirth. Cases of depression are recorded in conjunction with induced abortion, but undergoing abortion also relieves many cases of depression due to unwanted pregnancy. There is an increased incidence of sterility after abortion when prophylactic measures are taken against pelvic infection. Outpatient abortions should be performed by dilatation and curettage, before the 12th week of pregnancy. Local paracervical anesthesia is the method of choice for ambulant operations.

  13. [An opinion survey on abortion in Mexico City].

    PubMed

    Núñez-Fernández, L; Shrader-Cox, E; Benson, J

    1994-01-01

    In view of the lack of information regarding abortion attitudes in Mexico, an abortion opinion survey was conducted in Mexico City among 387 women and 338 men. Respondents were asked if they agreed with a woman's abortion decision under seven different circumstances. Affirmative responses were analyzed by respondents' sociodemographic and reproductive health characteristics and a scale was created to measure respondents' overall attitudes toward abortion. Greatest support was expressed for a woman's right to an abortion, and to abortion in cases of fetal defect, threat to the mother's life, and rape. On the attitudinal scale, however, respondents generally disapproved abortion. Male respondents were more likely than female respondents to support a woman's abortion decision. Males in union, females not in union, respondents over thirty years of age, those with more than primary school education, those with fewer pregnancies, those with no history of child mortality, and those with a history of or experience with abortion, were also more likely to support an abortion decision.

  14. Two Axis Pointing System (TAPS) attitude acquisition, determination, and control

    NASA Technical Reports Server (NTRS)

    Azzolini, John D.; Mcglew, David E.

    1990-01-01

    The Two Axis Pointing System (TAPS) is a 2 axis gimbal system designed to provide fine pointing of Space Transportation System (STS) borne instruments. It features center-of-mass instrument mounting and will accommodate instruments of up to 1134 kg (2500 pounds) which fit within a 1.0 by 1.0 by 4.2 meter (40 by 40 by 166 inch) envelope. The TAPS system is controlled by a microcomputer based Control Electronics Assembly (CEA), a Power Distribution Unit (PDU), and a Servo Control Unit (SCU). A DRIRU-II inertial reference unit is used to provide incremental angles for attitude propagation. A Ball Brothers STRAP star tracker is used for attitude acquisition and update. The theory of the TAPS attitude determination and error computation for the Broad Band X-ray Telescope (BBXRT) are described. The attitude acquisition is based upon a 2 star geometric solution. The acquisition theory and quaternion algebra are presented. The attitude control combines classical position, integral and derivative (PID) control with techniques to compensate for coulomb friction (bias torque) and the cable harness crossing the gimbals (spring torque). Also presented is a technique for an adaptive bias torque compensation which adjusts to an ever changing frictional torque environment. The control stability margins are detailed, with the predicted pointing performance, based upon simulation studies. The TAPS user interface, which provides high level operations commands to facilitate science observations, is outlined.

  15. Maori abortion practices in pre and early European New Zealand.

    PubMed

    Hunton, R B

    1977-12-28

    The practice of abortion and infanticide in pre and early European New Zealand is confirmed. The reasons for these practices and the methods used are discussed in relation to early Maori attitudes and mythology. PMID:273782

  16. A system for spacecraft attitude control and energy storage

    NASA Technical Reports Server (NTRS)

    Shaughnessy, J. D.

    1974-01-01

    A conceptual design for a double-gimbal reaction-wheel energy-wheel device which has three-axis attitude control and electrical energy storage capability is given. A mathematical model for the three-axis gyroscope (TAG) was developed, and a system of multiple units is proposed for attitude control and energy storage for a class of spacecraft. Control laws were derived to provide the required attitude-control torques and energy transfer while minimizing functions of TAG gimbal angles, gimbal rates, reaction-wheel speeds, and energy-wheel speed differences. A control law is also presented for a magnetic torquer desaturation system. A computer simulation of a three-TAG system for an orbiting telescope was used to evaluate the concept. The results of the study indicate that all control and power requirements can be satisfied by using the TAG concept.

  17. Understanding the Effects of Personal and School Religiosity on the Decision to Abort a Premarital Pregnancy

    ERIC Educational Resources Information Center

    Adamczyk, Amy

    2009-01-01

    Although much research has examined the relationship between religion and abortion attitudes, few studies have examined whether religion influences abortion behavior. This study looks at whether individual and school religiosity influence reported abortion behavior among women who become pregnant while unmarried. Hierarchical Logistic Models are…

  18. Design study for LANDSAT D attitude control system

    NASA Technical Reports Server (NTRS)

    Iwens, R. P.; Bernier, G. E.; Hofstadter, R. F.

    1976-01-01

    A design and performance evaluation is presented for the LANDSAT D attitude control system (ACS). Control and configuration of the gimballed Ku-band antenna system for communication with the tracking and data relay satellite (TDRS). Control of the solar array drive considered part of the ACS is also addressed.

  19. Abortion and infertility in Russia.

    PubMed

    Kulakov, V I

    1995-03-01

    The exceptionally high rate of induced abortion in Russia (204/100 live births in 1991) and of abortion-related genital tract infection and infertility implies an urgent need for both the prevention of unwanted pregnancy and less invasive abortion techniques. Vacuum aspiration is gradually replacing curettage as the abortion method of choice for first-trimester abortions, and research is being conducted on pharmacologic abortion involving prostaglandins in combination with RU-486. Infertility, which affects 10-15% of married Russian couples, accounts for 50% of visits to the largest gynecologic hospitals. 92% of women and 49% of men in couples with impaired fertility exhibit pathology of the reproductive system, primarily prior inflammatory morbidity of the genitalia. The use of surgery to correct these impairments is largely unsuccessful, especially when there has been prior treatment with the hydroturbation method. The Federal Family Planning Program for 1993-97 reflects increased awareness of the problem; among its goals are the creation of state and social structures for a family planning service, mass media campaigns, the preparation of educational materials on the avoidance of unwanted pregnancy, and staff training in sex education and family planning.

  20. The Microwave Anisotropy Probe (MAP) Attitude Control System

    NASA Technical Reports Server (NTRS)

    Markley, F. Landis; Andrews, Stephen F.; ODonnell, James R., Jr.; Ward, David K.; Ericsson, Aprille J.; Bauer, Frank H. (Technical Monitor)

    2002-01-01

    The Microwave Anisotropy Probe mission is designed to produce a map of the cosmic microwave background radiation over the entire celestial sphere by executing a fast spin and a slow precession of its spin axis about the Sun line to obtain a highly interconnected set of measurements. The spacecraft attitude is sensed and controlled using an Inertial Reference Unit, two Autonomous Star Trackers, a Digital Sun Sensor, twelve Coarse Sun Sensors, three Reaction Wheel Assemblies, and a propulsion system. This paper describes the design of the attitude control system that carries out this mission and presents some early flight experience.

  1. Flight performance of Skylab attitude and pointing control system

    NASA Technical Reports Server (NTRS)

    Chubb, W. B.; Kennel, H. F.; Rupp, C. C.; Seltzer, S. M.

    1975-01-01

    The Skylab attitude and pointing control system (APCS) requirements are briefly reviewed and the way in which they became altered during the prelaunch phase of development is noted. The actual flight mission (including mission alterations during flight) is described. The serious hardware failures that occurred, beginning during ascent through the atmosphere, also are described. The APCS's ability to overcome these failures and meet mission changes are presented. The large around-the-clock support effort on the ground is discussed. Salient design points and software flexibility that should afford pertinent experience for future spacecraft attitude and pointing control system designs are included.

  2. A COTS-Based Attitude Dependent Contact Scheduling System

    NASA Technical Reports Server (NTRS)

    DeGumbia, Jonathan D.; Stezelberger, Shane T.; Woodard, Mark

    2006-01-01

    The mission architecture of the Gamma-ray Large Area Space Telescope (GLAST) requires a sophisticated ground system component for scheduling the downlink of science data. Contacts between the ````````````````` satellite and the Tracking and Data Relay Satellite System (TDRSS) are restricted by the limited field-of-view of the science data downlink antenna. In addition, contacts must be scheduled when permitted by the satellite s complex and non-repeating attitude profile. Complicating the matter further, the long lead-time required to schedule TDRSS services, combined with the short duration of the downlink contact opportunities, mandates accurate GLAST orbit and attitude modeling. These circumstances require the development of a scheduling system that is capable of predictively and accurately modeling not only the orbital position of GLAST but also its attitude. This paper details the methods used in the design of a Commercial Off The Shelf (COTS)-based attitude-dependent. TDRSS contact Scheduling system that meets the unique scheduling requirements of the GLAST mission, and it suggests a COTS-based scheduling approach to support future missions. The scheduling system applies filtering and smoothing algorithms to telemetered GPS data to produce high-accuracy predictive GLAST orbit ephemerides. Next, bus pointing commands from the GLAST Science Support Center are used to model the complexities of the two dynamic science gathering attitude modes. Attitude-dependent view periods are then generated between GLAST and each of the supporting TDRSs. Numerous scheduling constraints are then applied to account for various mission specific resource limitations. Next, an optimization engine is used to produce an optimized TDRSS contact schedule request which is sent to TDRSS scheduling for confirmation. Lastly, the confirmed TDRSS contact schedule is rectified with an updated ephemeris and adjusted bus pointing commands to produce a final science downlink contact schedule.

  3. Abortion Before & After Roe

    PubMed Central

    Joyce, Ted; Tan, Ruoding; Zhang, Yuxiu

    2013-01-01

    We use unique data on abortions performed in New York State from 1971–1975 to demonstrate that women travelled hundreds of miles for a legal abortion before Roe. A100- mile increase in distance for women who live approximately 183 miles from New York was associated with a decline in abortion rates of 12.2 percent whereas the same change for women who lived 830 miles from New York lowered abortion rates by 3.3 percent. The abortion rates of nonwhites were more sensitive to distance than those of whites. We found a positive and robust association between distance to the nearest abortion provider and teen birth rates but less consistent estimates for other ages. Our results suggest that even if some states lost all abortion providers due to legislative policies, the impact on population measures of birth and abortion rates would be small as most women would travel to states with abortion services. PMID:23811233

  4. Abortion before & after Roe.

    PubMed

    Joyce, Ted; Tan, Ruoding; Zhang, Yuxiu

    2013-09-01

    We use unique data on abortions performed in New York State from 1971 to 1975 to demonstrate that women traveled hundreds of miles for a legal abortion before Roe. A 100-mile increase in distance for women who live approximately 183 miles from New York was associated with a decline in abortion rates of 12.2 percent whereas the same change for women who lived 830 miles from New York lowered abortion rates by 3.3 percent. The abortion rates of nonwhites were more sensitive to distance than those of whites. We found a positive and robust association between distance to the nearest abortion provider and teen birth rates but less consistent estimates for other ages. Our results suggest that even if some states lost all abortion providers due to legislative policies, the impact on population measures of birth and abortion rates would be small as most women would travel to states with abortion services.

  5. Verification of Spin Magnetic Attitude Control System using air-bearing-based attitude control simulator

    NASA Astrophysics Data System (ADS)

    Ousaloo, H. S.; Nodeh, M. T.; Mehrabian, R.

    2016-09-01

    This paper accomplishes one goal and it was to verify and to validate a Spin Magnetic Attitude Control System (SMACS) program and to perform Hardware-In-the-Loop (HIL) air-bearing experiments. A study of a closed-loop magnetic spin controller is presented using only magnetic rods as actuators. The magnetic spin rate control approach is able to perform spin rate control and it is verified with an Attitude Control System (ACS) air-bearing MATLAB® SIMULINK® model and a hardware-embedded LABVIEW® algorithm that controls the spin rate of the test platform on a spherical air bearing table. The SIMULINK® model includes dynamic model of air-bearing, its disturbances, actuator emulation and the time delays caused by on-board calculations. The air-bearing simulator is employed to develop, improve, and carry out objective tests of magnetic torque rods and spin rate control algorithm in the experimental framework and to provide a more realistic demonstration of expected performance of attitude control as compared with software-based architectures. Six sets of two torque rods are used as actuators for the SMACS. It is implemented and simulated to fulfill mission requirement including spin the satellite up to 12 degs-1 around the z-axis. These techniques are documented for the full nonlinear equations of motion of the system and the performances of these techniques are compared in several simulations.

  6. Abortion in Europe, 1920-91: a public health perspective.

    PubMed

    David, H P

    1992-01-01

    This article grew out of a keynote address prepared for the conference, "From Abortion to Contraception: Public Health Approaches to Reducing Unwanted Pregnancy and Abortion Through Improved Family Planning Services," held in Tbilisi, Georgia, USSR in October 1990. The article reviews the legal, religious, and medical situation of induced abortion in Europe in historical perspective, and considers access to abortion services, attitudes of health professionals, abortion incidence, morbidity and mortality, the new antiprogestins, the characteristics of abortion seekers, late abortions, postabortion psychological reactions, effects of denied abortion, and repeat abortion. Special attention is focused on the changes occurring in Romania, Albania, and the former Soviet Union, plus the effects of the new conservatism elsewhere in the formerly socialist countries of central and eastern Europe, particularly Poland. Abortion is a social reality that can no more be legislated out of existence than the controversy surrounding it can be stilled. No matter how effective family planning services and practices become, there will always be a need for access to safe abortion services.

  7. Apollo experience report guidance and control systems: Lunar module abort guidance system

    NASA Technical Reports Server (NTRS)

    Kurten, P. M.

    1975-01-01

    The history of a unique development program that produced an operational fixed guidance system of inertial quality is presented. Each phase of development, beginning with requirement definition and concluding with qualification and testing, is addressed, and developmental problems are emphasized. Software generation and mission operations are described, and specifications for the inertial reference unit are included, as are flight performance results. Significant program observations are noted.

  8. Birth Control, Sterilization and Abortion

    PubMed Central

    Schneiderman, Lawrence J.; Prichard, Lorraine; Fuller, Scott; Atkinson, Leslie

    1974-01-01

    A questionnaire comprising case histories was administered to 27 Protestant and 27 Catholic clergymen in the San Diego area to test their attitudes toward the use of birth control, sterilization and abortion in families with specific genetic problems. The responses indicated: • Catholic and Protestant clergymen do not always follow the official positions of their churches in these matters, although the majority of them do. • Protestant clergymen were more likely to approve of birth control, sterilization, and abortion than Catholic clergymen. • The approval responses of Protestant and Catholic clergymen were not greatly influenced by whether the illness variables involved high Mendelian risk, high psychological cost, high social cost, or poor prognosis. • The approval responses of Protestant and Catholic clergymen were not significantly influenced by the socio-ethnic background of the families. PMID:4813802

  9. Evaluation of Acoustic Emission NDE of Composite Crew Module Service Module/Alternate Launch Abort System (CCM SM/ALAS) Test Article Failure Tests

    NASA Technical Reports Server (NTRS)

    Horne, Michael R.; Madaras, Eric I.

    2010-01-01

    Failure tests of CCM SM/ALAS (Composite Crew Module Service Module / Alternate Launch Abort System) composite panels were conducted during July 10, 2008 and July 24, 2008 at Langley Research Center. This is a report of the analysis of the Acoustic Emission (AE) data collected during those tests.

  10. Low cost attitude control system reaction wheel development

    NASA Technical Reports Server (NTRS)

    Bialke, William

    1991-01-01

    In order to satisfy a growing demand for low cost attitude control systems for small spacecraft, development of a low power and low cost Reaction Wheel Assembly was initiated. The details of the versatile design resulting from this effort are addressed. Tradeoff analyses for each of the major components are included, as well as test data from an engineering prototype of the hardware.

  11. Exploring Individual Differences in Attitudes toward Audience Response Systems

    ERIC Educational Resources Information Center

    Kay, Robin H.; Knaack, Liesel

    2009-01-01

    The purpose of this study was to examine individual differences in attitudes toward Audience Response Systems (ARSs) in secondary school classrooms. Specifically, the impact of gender, grade, subject area, computer comfort level, participation level, and type of use were examined in 659 students. Males had significantly more positive attitudes…

  12. The Magsat three axis arc second precision attitude transfer system

    NASA Technical Reports Server (NTRS)

    Schenkel, F. W.; Heins, R. J.

    1981-01-01

    The Magsat Attitude Transfer System (ATS), which provides attitude alteration in pitch, yaw, and roll is described. A remote vector magnetometer extends from Magsat on a 20 ft boom, requiring vector orientation by reference to coordinate axes determined by a set of star mapping cameras. The ATS was designed to perform in a solar illuminated environment by using an optically narrow bandwidth with synchronous demodulation at 9300 A. The pitch/yaw optical design, the electrooptics, and signal and switching diagrams are provided. Simple mirrors with no moving parts are placed on the magnetometer to reflect a collimated beam from the ATS for attitude indication, which is accurate to one part in 96. Alignment was completed within 24 hr after launch.

  13. Spain still in need of a good abortion law.

    PubMed

    Gasco, M

    1991-09-01

    In 1985 Spain adopted a new abortion law that allows women to have abortions if: 1) the pregnancy poses a physical or mental risk, 2) the fetus risks a defect, 3) in cases of rape. 94% of all abortions are carried out in private clinics. Before the law only 411 abortions were reported, after the law 16,766 were reported the next year. 52% of the women were unmarried, 49% had no children, and 93% were less than 12 weeks pregnant. The availability of safe abortions is limited by: 1) lack of centers in most geographical regions and 2) lack of clinics or hospitals in the public health system that will give abortion services. The addition of 4th ground for abortion would not significantly improve access to abortion services since 98% of all abortions are performed under the mental risk indication. A better solution would be to adopt a time limit system similar to other European countries. Since 93% of all abortion occur within 12 weeks of pregnancy, it would accommodate most women. However, whether by executive order or legislation, increasing legal access will still not increase access. There simply is n system in place to accommodate the number of women who would seek abortions i they became legal (it is estimated that 200000 women got to England annually seeking abortion.) Doctors do not want to perform abortions and there is no social or legal standing to force them to do so. PMID:12284545

  14. Integrated Power and Attitude Control Systems for Space Station

    NASA Technical Reports Server (NTRS)

    Oglevie, R. E.; Eisenhaure, D. B.

    1985-01-01

    Integrated Power and Attitude Control Systems (IPACS) studies performed over a decade ago established the feasibility of simultaneously storing electrical energy in wheels and utilizing the resulting momentum for spacecraft attitude control. It was shown that such a system possessed many advantages over other contemporary energy storage and attitude control systems in many applications. More recent technology advances in composite rotors, magnetic bearings, and power control electronics have triggered new optimism regarding the feasibility and merits of such a system. The paper presents the results of a recent study whose focus was to define an advanced IPACS and to evaluate its merits for the Space Station application. A system and component design concept is developed to establish the system performance capability. A system level trade study, including life-cycle costing, is performed to define the merits of the system relative to two other candidate systems. It is concluded that an advanced IPACS concept is not only feasible, but offers substantial savings in mass, and life-cycle cost.

  15. Post abortion contraception.

    PubMed

    Gemzell-Danielsson, Kristina; Kopp, Helena Kallner

    2015-11-01

    A safe induced abortion has no impact on future fertility. Ovulation may resume as early as 8 days after the abortion. There is no difference in return to fertility after medical or surgical abortion. Most women resume sexual activity soon after an abortion. Contraceptive counseling and provision should therefore be an integrated part of the abortion services to help women avoid another unintended pregnancy and risk, in many cases an unsafe, abortion. Long-acting reversible contraceptive methods that includes implants and intrauterine contraception have been shown to be the most effective contraceptive methods to help women prevent unintended pregnancy following an abortion. However, starting any method is better than starting no method at all. This Special Report will give a short guide to available methods and when they can be started after an induced abortion.

  16. Post abortion contraception.

    PubMed

    Gemzell-Danielsson, Kristina; Kopp, Helena Kallner

    2015-11-01

    A safe induced abortion has no impact on future fertility. Ovulation may resume as early as 8 days after the abortion. There is no difference in return to fertility after medical or surgical abortion. Most women resume sexual activity soon after an abortion. Contraceptive counseling and provision should therefore be an integrated part of the abortion services to help women avoid another unintended pregnancy and risk, in many cases an unsafe, abortion. Long-acting reversible contraceptive methods that includes implants and intrauterine contraception have been shown to be the most effective contraceptive methods to help women prevent unintended pregnancy following an abortion. However, starting any method is better than starting no method at all. This Special Report will give a short guide to available methods and when they can be started after an induced abortion. PMID:26619082

  17. Abortion - surgical - aftercare

    MedlinePlus

    ... this page: //medlineplus.gov/ency/patientinstructions/000658.htm Abortion - surgical - aftercare To use the sharing features on ... please enable JavaScript. You have had a surgical abortion. This is a procedure that ends pregnancy by ...

  18. Conceptualising abortion stigma.

    PubMed

    Kumar, Anuradha; Hessini, Leila; Mitchell, Ellen M H

    2009-08-01

    Abortion stigma is widely acknowledged in many countries, but poorly theorised. Although media accounts often evoke abortion stigma as a universal social fact, we suggest that the social production of abortion stigma is profoundly local. Abortion stigma is neither natural nor 'essential' and relies upon power disparities and inequalities for its formation. In this paper, we identify social and political processes that favour the emergence, perpetuation and normalisation of abortion stigma. We hypothesise that abortion transgresses three cherished 'feminine' ideals: perpetual fecundity; the inevitability of motherhood; and instinctive nurturing. We offer examples of how abortion stigma is generated through popular and medical discourses, government and political structures, institutions, communities and via personal interactions. Finally, we propose a research agenda to reveal, measure and map the diverse manifestations of abortion stigma and its impact on women's health.

  19. [The psychological (long-term) sequelae of abortion].

    PubMed

    Shadmi, N; Bloch, M; Hermoni, D

    2002-10-01

    This article aims to review the available literature on the short and long-term psychological sequelae of abortion. This subject remains controversial. The most common reactions women experienced after pregnancy loss were grief, depression and anxiety. From the reviewed literature it seems that those reactions are more common following spontaneous abortion than after therapeutic abortion. Risk factors for these reactions include past psychiatric history, social and cultural attitude, poor social support, history of previous therapeutic abortion, the fact that the current abortion is the result of medical or genetic problem, no living children, or being a single woman. Most of the reviewed papers deal with short-term reactions and raise the need for long term research (more than 2 years). Only one such paper was found. It is recommended that all those who treat women that had an abortion should be aware of its psychological consequences and help identify and refer high-risk women for treatment.

  20. Wheel configurations for combined energy storage and attitude control systems

    NASA Technical Reports Server (NTRS)

    Oglevie, R. E.

    1985-01-01

    Integrated power and attitude control system (IPACS) studies performed over a decade ago established the feasibility of simultaneously storing electrical energy in wheels and utilizing the resulting momentum for spacecraft attitude control. It was shown that such a system possessed many advantages over other contemporary energy storage and attitude control systems in many applications. More recent technology advances in composite rotors, magnetic bearings, and power control electronics have triggered new optimism regarding the feasibility and merits of such a system. This paper presents the results of a recent study whose focus was to define an advanced IPACS and to evaluate its merits for the Space Station application. Emphasis is given to the selection of the wheel configuration to perform the combined functions. A component design concept is developed to establish the system performance capability. A system-level trade study, including life-cycle costing, is performed to define the merits of the system relative to two other candidate systems. It is concluded that an advanced IPACS concept is not only feasible but offers substantial savings in mass and life-cycle cost.

  1. [Abortion-related mortality in Brazil: decrease in spatial inequality].

    PubMed

    Lima, B G

    2000-03-01

    Abortion is not only a major cause of obstetric hospitalization in poor countries, but it also represents the failure of the public health system to provide enough information about contraceptive methods and thus prevent pregnancies. In Brazil, the high utilization rates of health facilities due to abortions reflect the ongoing difficulties with family planning and contraception. In addition, mortality resulting from abortions serves as an indicator of the quality of abortion procedures, an important point in a country where the practice is illegal and therefore done clandestinely. In this study, we analyzed the rates of mortality resulting from abortions among women 10 to 54 years old, including women who died from spontaneous and induced abortion, from 1980 to 1995, for the various regions of the country. The information we used came from the mortality data bank of the public health system of the Ministry of Health. Population data were obtained from the Brazilian Institute for Geography and Statistics. We studied 2,602 deaths, 15% of which were due to missed abortion, spontaneous abortion, or legally permitted induced abortion. The other 85% of the deaths were due to illegal induced abortions or to nonspecified abortions. The mortality rates from abortion-related causes have steadily decreased in all the regions of Brazil, but this improvement has been unevenly distributed in the country. The region with the smallest decrease in this rate (38% over 15 years) was the Northeast. The age of women dying from abortions progressively declined over the period studied.

  2. Abortion among Adolescents.

    ERIC Educational Resources Information Center

    Adler, Nancy E.; Ozer, Emily J.; Tschann, Jeanne

    2003-01-01

    Reviews the current status of abortion laws pertaining to adolescents worldwide, examining questions raised by parental consent laws in the United States and by the relevant psychological research (risk of harm from abortion, informed consent, consequences of parental involvement in the abortion decision, and current debate). Discusses issues…

  3. Abortion and religion.

    PubMed

    Howell, N R

    1997-01-01

    This paper argues that religious communities should pose new questions about abortion in an attempt to reinvigorate the abortion debate and make it more constructive. Such questions would break the current impasse, enlarge the global and ecological scope of abortion inquiry, and engage plural religious perspectives in an interreligious dialogue about justice and abortion. After an introduction, the paper discusses the first impasse in the abortion debate, which is caused by conflicting definitions of personhood that create a fetus/pregnant woman dualism and artificially separate the fetus from its interdependence with the mother. Section 2 looks at how the abortion impasse results from the assertions of competing fetal and maternal rights and from conflict over who controls nature and women's bodies. The third section seeks alternatives to the dichotomizing of individual and community in the abortion debate in Christian theology, such as the notion of the relational self that demands attention to the wider social implications of reproduction. By examining theories that presume that people are relational, section 4 locates the abortion debate in a wider ecological context with concerns about overpopulation and environmental degradation. Section 5 explores questions of what authority can be used to determine whether abortion is ever justifiable for Christians and what authority is relevant for determining a Christian theological ethic of abortion. This section also looks at Jewish, Muslim, Hindu, and Buddhist views of abortion in the belief that the complex ethical issues relating to abortion may be explored through religious ritual. PMID:12348325

  4. The Attitude Control System for the Wilkinson Microwave Anisotropy Probe

    NASA Technical Reports Server (NTRS)

    Markley, F. Landis; Andrews, Stephen F.; ODonnell, James R., Jr.; Ward, David K.

    2003-01-01

    The Wilkinson Microwave Anisotropy Probe mission produces a map of the cosmic microwave background radiation over the entire celestial sphere by executing a fast spin and a slow precession of its spin axis about the Sun line to obtain a highly interconnected set of measurements. The spacecraft attitude is sensed and controlled using an inertial reference unit, two star trackers, a digital sun sensor, twelve coarse sun sensors, three reaction wheel assemblies, and a propulsion system. Sufficient attitude knowledge is provided to yield instrument pointing to a standard deviation (l sigma) of 1.3 arc-minutes per axis. In addition, the spacecraft acquires and holds the sunline at initial acquisition and in the event of a failure, and slews to the proper orbit adjust orientations and to the proper off-sunline attitude to start the compound spin. This paper presents an overview of the design of the attitude control system to carry out this mission and presents some early flight experience.

  5. Student Attitudes: A Study of Social Class

    ERIC Educational Resources Information Center

    Hardy, Clifford A.

    1976-01-01

    Student attitudes toward current controversial problems (bussing for racial integration, legalization of abortion, and legalization of marijuana) were studied with regard to social class. The 1960 revision of the Purdue Master Attitude Scale was used. (LBH)

  6. Effects of the Orion Launch Abort Vehicle Plumes on Aerodynamics and Controllability

    NASA Technical Reports Server (NTRS)

    Vicker, Darby; Childs, Robert; Rogers,Stuart E.; McMullen, Matthew; Garcia, Joseph; Greathouse, James

    2013-01-01

    Characterization of the launch abort system of the Multi-purpose Crew Vehicle (MPCV) for control design and accurate simulation has provided a significant challenge to aerodynamicists and design engineers. The design space of the launch abort vehicle (LAV) includes operational altitudes from ground level to approximately 300,000 feet, Mach numbers from 0-9, and peak dynamic pressure near 1300psf during transonic flight. Further complicating the characterization of the aerodynamics and the resultant vehicle controllability is the interaction of the vehicle flowfield with the plumes of the two solid propellant motors that provide attitude control and the main propulsive impulse for the LAV. These interactions are a function of flight parameters such as Mach number, altitude, dynamic pressure, vehicle attitude, as well as parameters relating to the operation of the motors themselves - either as a function of time for the AM, or as a result of the flight control system requests for control torque from the ACM. This paper discusses the computational aerodynamic modeling of the aerodynamic interaction caused by main abort motor and the attitude control motor of the MPCV LAV, showing the effects of these interactions on vehicle controllability.

  7. A cross-cultural history of abortion.

    PubMed

    Shain, R N

    1986-03-01

    Abortion is a universal phenomenon, occurring throughout recorded history and at all levels of societal organization. Techniques are highly varied, as are the circumstances under which it is practised. The status of and attitudes towards abortion in Western civilization are variable and have, in most cases, been changing. As of 1982, 10% and 18% of the world's population respectively, lived in countries where abortion was totally prohibited or where it was permitted only to save the mother's life. In the USA, various national surveys indicate liberalization of public attitudes towards pregnancy termination between 1965 and the years immediately following the Roe v. Wade Supreme Court decision (1973) which legalized abortion. More recent polls demonstrate little attitudinal change since 1972-1973: between 80% and 90% of Americans approve of abortion in the case of poor health, a seriously defective fetus, or rape, and between 40% and 50% indicate approval for all other reasons as well. Only 10% of the American population would like to see abortion prohibited under all circumstances. Sociodemographic analyses indicate that individuals who disapprove of abortion differ from those who approve of its availability in that they are more likely to be Roman Catholic or fundamentalist Protestant; are, in general, more strongly committed to organized religion; are on the traditional/conservative end of the spectrum with regard to women's role in life, premarital sex, sex education and civil liberties; and tend to have achieved a relatively low educational level. 'Pro-life' and 'pro-choice' activists tend to be women who are completely different from one another in sociodemographic characteristics and in overall values, particularly as these relate to traditional versus modern female roles.

  8. The SAS-3 attitude control system

    NASA Technical Reports Server (NTRS)

    Mobley, F. F.; Konigsberg, R.; Fountain, G. H.

    1975-01-01

    SAS-3 uses a reaction wheel to provide torque to control the spin rate. If the wheel speed becomes too great or too small, it must be restored to its nominal rate by momentum dumping which is done by magnetic torquing against the earth's magnetic field by the satellite's magnetic coils. A small rate-integrating gyro is used to sense the spin rate so that closed loop control of the spin rate can be achieved. These various systems are described in detail including the reaction wheel system, the gyro system, along with control modes (spin rate control and the star lock mode).

  9. Understanding implicit and explicit attitude change: a systems of reasoning analysis.

    PubMed

    Rydell, Robert J; McConnell, Allen R

    2006-12-01

    There is considerable controversy about how to conceptualize implicit and explicit attitudes, reflecting substantial speculation about the mechanisms involved in implicit and explicit attitude formation and change. To investigate this issue, the current work examines the processes by which new attitudes are formed and changed and how these attitudes predict behavior. Five experiments support a systems of reasoning approach to implicit and explicit attitude change. Specifically, explicit attitudes were shaped in a manner consistent with fast-changing processes, were affected by explicit processing goals, and uniquely predicted more deliberate behavioral intentions. Conversely, implicit attitudes reflected an associative system characterized by a slower process of repeated pairings between an attitude object and related evaluations, were unaffected by explicit processing goals, uniquely predicted spontaneous behaviors, and were exclusively affected by associative information about the attitude object that was not available for higher order cognition.

  10. Abortion: a reader's guide.

    PubMed

    Hisel, L M

    1996-01-01

    This review traces the discussion of abortion in the US through 10 of the best books published on the subject in the past 25 years. The first book considered is Daniel Callahan's "Abortion: Law, Choice and Morality," which was published in 1970. Next is book of essays also published in 1970: "The Morality of Abortion: Legal and Historical Perspectives," which was edited by John T. Noonan, Jr., who became a prominent opponent to the Roe decision. It is noted that Roman Catholics would find the essay by Bernard Haring especially interesting since Haring supported the Church's position on abortion but called for acceptance of contraception. Third on the list is historian James C. Mohr's review of "Abortion in America: The Origins and Evolution of National Policy," which was printed five years after the Roe decision. Selection four is "Enemies of Choice: The Right-to-Life Movement and Its Threat to Abortion" by Andrew Merton. This 1981 publication singled out a concern about sexuality as the overriding motivator for anti-abortion groups. Two years later, Beverly Wildung Harrison published a ground-breaking, feminist, moral analysis of abortion entitled "Our Right to Choose: Toward a New Ethic of Abortion. This was followed by a more empirical and sociopolitical feminist analysis in Kristin Luker's 1984 "Abortion and the Politics of Motherhood." The seventh book is by another feminist, Rosalind Pollack Petchesky, whose work "Abortion and Women's Choice: The State, Sexuality, and Reproductive Freedom" was first published in 1984 and reprinted in 1990. The eighth important book was "Abortion and Catholicism: The American Debate," edited by Thomas A. Shannon and Patricia Beattie Jung. Rounding out the list are the 1992 work "Life Itself: Abortion in the American Mind" by Roger Rosenblatt and Ronald Dworkin's 1993 "Life's Dominion: An Argument About Abortion, Euthanasia, and Individual Freedom."

  11. Abortion: a reader's guide.

    PubMed

    Hisel, L M

    1996-01-01

    This review traces the discussion of abortion in the US through 10 of the best books published on the subject in the past 25 years. The first book considered is Daniel Callahan's "Abortion: Law, Choice and Morality," which was published in 1970. Next is book of essays also published in 1970: "The Morality of Abortion: Legal and Historical Perspectives," which was edited by John T. Noonan, Jr., who became a prominent opponent to the Roe decision. It is noted that Roman Catholics would find the essay by Bernard Haring especially interesting since Haring supported the Church's position on abortion but called for acceptance of contraception. Third on the list is historian James C. Mohr's review of "Abortion in America: The Origins and Evolution of National Policy," which was printed five years after the Roe decision. Selection four is "Enemies of Choice: The Right-to-Life Movement and Its Threat to Abortion" by Andrew Merton. This 1981 publication singled out a concern about sexuality as the overriding motivator for anti-abortion groups. Two years later, Beverly Wildung Harrison published a ground-breaking, feminist, moral analysis of abortion entitled "Our Right to Choose: Toward a New Ethic of Abortion. This was followed by a more empirical and sociopolitical feminist analysis in Kristin Luker's 1984 "Abortion and the Politics of Motherhood." The seventh book is by another feminist, Rosalind Pollack Petchesky, whose work "Abortion and Women's Choice: The State, Sexuality, and Reproductive Freedom" was first published in 1984 and reprinted in 1990. The eighth important book was "Abortion and Catholicism: The American Debate," edited by Thomas A. Shannon and Patricia Beattie Jung. Rounding out the list are the 1992 work "Life Itself: Abortion in the American Mind" by Roger Rosenblatt and Ronald Dworkin's 1993 "Life's Dominion: An Argument About Abortion, Euthanasia, and Individual Freedom." PMID:12178914

  12. Changing Student Attitudes using Andes, An Intelligent Homework System

    NASA Astrophysics Data System (ADS)

    van de Sande, Brett; VanLehn, K.; Treacy, D.; Shelby, R.

    2006-12-01

    The size of introductory physics lectures often inhibits personal homework assistance and timely corrective feedback. Andes, an intelligent homework system designed for two semesters of introductory physics, can fill this need by encouraging students to use sound problem solving techniques and providing immediate feedback on each step of a solution. On request, Andes provides principles-based hints based on previous student actions. A multi-year study at the U.S. Naval Academy demonstrate that students using Andes perform better than students working the same problems as graded pencil and paper homeworks. In addition, student attitude surveys show that Andes is preferred over other homework systems. These findings have implications for student attitudes toward, and mastery of, physics. See http://www.andes.pitt.edu for more information.

  13. Changing Student Attitudes using Andes, An Intelligent Homework System

    NASA Astrophysics Data System (ADS)

    van de Sande, Brett; Vanlehn, Kurt; Treacy, Don; Shelby, Bob; Wintersgill, Mary

    2007-03-01

    The size of introductory physics lectures often inhibits personal homework assistance and timely corrective feedback. Andes, an intelligent homework help system designed for two semesters of introductory physics, can fill this need by encouraging students to use sound problem solving techniques and providing immediate feedback on each step of a solution. On request, Andes provides principles-based hints based on previous student actions. A multi-year study at the U.S. Naval Academy demonstrates that students using Andes perform better than students working the same problems as graded pencil and paper homeworks. In addition, student attitude surveys show that Andes is preferred over other homework systems. These findings have implications for student attitudes toward, and mastery of, physics. See http://www.andes.pitt.edu for more information.

  14. Attitude Control System Design for Fast Rest-to-Rest Attitude Maneuver

    NASA Astrophysics Data System (ADS)

    Sakai, S.-I.; Bando, N.; Hashimoto, T.; Murata, Y.; Mochizuki, N.; Nakamura, T.; Kamiya, T.; Ogura, N.; Maeda, K.

    2009-08-01

    The VSOP-2 project is a new space VLBI (very long baseline interferometer) radio astronomy mission, proposed to inherit the fruitful success of the VSOP mission with the HALCA satellite. One of the most important advances of VSOP-2 is the use of higher observation frequency, which requires fast alternating observation of a target and calibrator in order to remove the phase changes caused by the atmosphere. Typically, both sources must be observed within 60 sec, and this switching must be carried out over many hours. ``ASTRO-G" is a satellite planned for this VSOP-2 project, and one of technical challenges is to achieve such fast rest-to-rest maneuvers, and the proper hardware must be selected to account for this fast attitude maneuver. The controlled momentum gyro (CMG) is an actuator that provides high torque with small power consumption, and the fiber optical gyro is a sensor able to measure the high angular velocity with excellent accuracy. This paper first describes these components for attitude control. Another challenge of the ASTRO-G's attitude control system is to design the switching for the flexible mode of the satellite structure, containing a large deployable reflector and a large solar panel. These produce resonances with fast switching and these must be attenuated. To achieve high agility in a flexible satellite, the controller design is crucial. One design feature is a novel robust input shaper named ``nil mode exciting profiler". Another feature is the feedback controller design. The paper describes these features and other potential problems with fast switching..

  15. The Spartan attitude control system - Control electronics assembly

    NASA Technical Reports Server (NTRS)

    Stone, R. W.

    1986-01-01

    The Spartan attitude control system (ACS) represents an evolutionary development of the previous STRAP-5 ACS through the use of state-of-the-art microprocessors and hardware. Despite a gyro rate signal noise problem that caused the early depletion of argon gas, the Spartan 101 experiment was able to collect several hours of data from two targets. Attention is presently given to the ACS sequencer module, sensor interface box, valve driver box, control electronics software, jam tables, and sequencer programs.

  16. 76 FR 50810 - Seventh Meeting: RTCA Special Committee 219: Attitude and Heading Reference System

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-16

    ... Committee 219 meeting: Attitude and Heading Reference System. SUMMARY: The FAA is issuing this notice to advise the public of a meeting of RTCA Special Committee 219: Attitude and Heading Reference System... Federal Aviation Administration Seventh Meeting: RTCA Special Committee 219: Attitude and...

  17. Magnetospheric Multiscale (MMS) Mission Attitude Ground System Design

    NASA Technical Reports Server (NTRS)

    Sedlak, Joseph E.; Superfin, Emil; Raymond, Juan C.

    2010-01-01

    This paper describes the attitude ground system (AGS) design to be used for support of the Magnetospheric MultiScale (MMS) mission. The AGS exists as one component of the mission operations control center. It has responsibility for validating the onboard attitude and accelerometer bias estimates, calibrating the attitude sensors and the spacecraft inertia tensor, and generating a definitive attitude history for use by the science teams. NASA's Goddard Space Flight Center (GSFC) in Greenbelt, Maryland is responsible for developing the MMS spacecraft, for the overall management of the MMS mission, and for mission operations. MMS is scheduled for launch in 2014 for a planned two-year mission. The MMS mission consists of four identical spacecraft flying in a tetrahedral formation in an eccentric Earth orbit. The relatively tight formation, ranging from 10 to 400 km, will provide coordinated observations giving insight into small-scale magnetic field reconnection processes. By varying the size of the tetrahedron and the orbital semi-major axis and eccentricity, and making use of the changing solar phase, this geometry allows for the study of both bow shock and magnetotail plasma physics, including acceleration, reconnection, and turbulence. The mission divides into two phases for science; these phases will have orbit dimensions of 1.2 x 12 Earth radii in the first phase and 1.2x25 Earth radii in the second in order to study the dayside magnetopause and the nightside magnetotail, respectively. The orbital periods are roughly one day and three days for the two mission phases. Each of the four MMS spacecraft will be spin stabilized at 3 revolutions per minute (rpm), with the spin axis oriented near the ecliptic north pole but tipped approximately 2.5 deg towards the Sun line. The main body of each spacecraft will be an eight-sided platform with diameter of 3.4 m and height of 1.2 m. Several booms are attached to this central core: two axial booms of 14.9 m length, two

  18. IMU/GPS System Provides Position and Attitude Data

    NASA Technical Reports Server (NTRS)

    Lin, Ching Fang

    2006-01-01

    A special navigation system is being developed to provide high-quality information on the position and attitude of a moving platform (an aircraft or spacecraft), for use in pointing and stabilization of a hyperspectral remote-sensing system carried aboard the platform. The system also serves to enable synchronization and interpretation of readouts of all onboard sensors. The heart of the system is a commercially available unit, small enough to be held in one hand, that contains an integral combination of an inertial measurement unit (IMU) of the microelectromechanical systems (MEMS) type, Global Positioning System (GPS) receivers, a differential GPS subsystem, and ancillary data-processing subsystems. The system utilizes GPS carrier-phase measurements to generate time data plus highly accurate and continuous data on the position, attitude, rotation, and acceleration of the platform. Relative to prior navigation systems based on IMU and GPS subsystems, this system is smaller, is less expensive, and performs better. Optionally, the system can easily be connected to a laptop computer for demonstration and evaluation. In addition to airborne and spaceborne remote-sensing applications, there are numerous potential terrestrial sensing, measurement, and navigation applications in diverse endeavors that include forestry, environmental monitoring, agriculture, mining, and robotics.

  19. Abortion: the continuing controversy.

    PubMed

    Behrens, C E

    1972-08-01

    While most countries of the world practice abortion, government policy, medical opinion, private opinion and actual practice vary widely. Although mortality from legal abortions is quite low, complications rise sharply after 12 gestational weeks. No conclusive proof shows adverse postabortion psychological effects. Romania, Japan and the Soviet Union experienced declining birth rates when abortion was made available and New York City saw a decline in illegitimacy of approximately 12% from 1970 to 1971. Throughout the world abortion laws vary from restrictive to moderate to permissive. Where laws are restrictive, as in France and Latin America, illegal abortions are estimated in the millions. The controversy over abortion centers around the arguments of what constitutes a human life, and the rights of the fetus versus the right of a woman to control her reproductive life. A review of state abortion laws as of August 1972 shows pressure on state legislatures to change existing laws. The future of abortion depends upon technological advances in fertility control, development of substitutes like menstral extraction, prostaglandins and reversible sterilization. Development of these techniques will take time. At present only through education and improved delivery of contraceptives can dependence on abortion as a method of fertility control be eased. Citizen education in the United States, both sex education and education for responsbile parenthood, is in a poor state according to the Commission on Population Growth and the American Future. If recourse to abortion is to be moderated, it is the next generation of parents who will have to be educated.

  20. France: late abortion.

    PubMed

    Gaudry, D; Sadan, G

    1989-01-01

    In France, under the terms of a law passed by Parliament in 1975, a woman may have an abortion up to 12 weeks of pregnancy if she is a French resident and, in the event that she is a minor, she has parental consent. The woman must also have 2 medical consultations, a week apart. The woman is reimbursed by the state up to 70% of the cost of the abortion. After 12 weeks, abortion, except for therapeutic abortion, under the terms of Article 317 of the Criminal Code, is a crime, punishable by 6 months to 10 years in prison, a fine of between 1800 and 250,000 Francs, and loss of professional license. Moreover, Article 647 of the Health Code bans any advertising, incitement or propaganda for abortion or abortion-inducing products. Many French women go to Britain or Holland for abortions after 12 weeks, but they face the financial burden of traveling as well as the difficulties of getting help in a strange country and the stigma of having done something illegal. The Mouvement Francais pour le Planning Familial, which won the legalization of contraception in 1967, is now fighting for legal abortion as well as the distribution of information about sexuality, contraception, and abortion in the schools. 2 charges of incitement to abortion have been brought against the organization.

  1. Crew Exploration Vehicle Service Module Ascent Abort Coverage

    NASA Technical Reports Server (NTRS)

    Tedesco, Mark B.; Evans, Bryan M.; Merritt, Deborah S.; Falck, Robert D.

    2007-01-01

    The Crew Exploration Vehicle (CEV) is required to maintain continuous abort capability from lift off through destination arrival. This requirement is driven by the desire to provide the capability to safely return the crew to Earth after failure scenarios during the various phases of the mission. This paper addresses abort trajectory design considerations, concept of operations and guidance algorithm prototypes for the portion of the ascent trajectory following nominal jettison of the Launch Abort System (LAS) until safe orbit insertion. Factors such as abort system performance, crew load limits, natural environments, crew recovery, and vehicle element disposal were investigated to determine how to achieve continuous vehicle abort capability.

  2. Public attitudes toward life and death.

    PubMed

    Sawyer, D O

    1983-01-01

    Opinion trends in this country indicate sharp divisions in public sentiment over a number of life-taking actions. While legal abortion and capital punishment clearly head a list, a number of other issues have gained national attention in recent years. The present paper explores the structure of belief systems giving rise to normative conflicts of this kind. Of particular interest is the notion of a "pro-life" or other generic life orientation (e.g., the alleged "right-to-die" orientation of those who favor "mercy killings" in the case of terminally ill patients) as a possible explanation for public attitudes toward specific issues such as suicide and euthanasia. The present analysis assesses the empirical claims associated with such a model. The results offer qualified support for the existence of generic value orientations as revealed by public attitudes toward legal abortion, suicide, euthanasia, and capital punishment.

  3. Letter: The Canadian abortion law.

    PubMed

    Coffey, P G

    1976-08-01

    Removing abortion from the Criminal Code in Canada will mean that more and more abortions will be performed for nonmedical reasons which will result in an abortion-on-demand situation similar to that in Japan. Early complications of abortion include death, hemorrhage, shock, cervical injury, and infection. Later complications include premature births, spontaneous abortions, ectopic pregnancies, pelvic inflammation, and infertility. Legalized abortion does not seem to reduce the incidence of illegal abortion. There are also psychological, moral, and sociological consequences of legalized abortion. It would seem that liberal abortion makes bad medicine and leads to far-reaching consequences.

  4. Adaptive control applied to Space Station attitude control system

    NASA Technical Reports Server (NTRS)

    Lam, Quang M.; Chipman, Richard; Hu, Tsay-Hsin G.; Holmes, Eric B.; Sunkel, John

    1992-01-01

    This paper presents an adaptive control approach to enhance the performance of current attitude control system used by the Space Station Freedom. The proposed control law was developed based on the direct adaptive control or model reference adaptive control scheme. Performance comparisons, subject to inertia variation, of the adaptive controller and the fixed-gain linear quadratic regulator currently implemented for the Space Station are conducted. Both the fixed-gain and the adaptive gain controllers are able to maintain the Station stability for inertia variations of up to 35 percent. However, when a 50 percent inertia variation is applied to the Station, only the adaptive controller is able to maintain the Station attitude.

  5. Rapid Geometry Creation for Computer-Aided Engineering Parametric Analyses: A Case Study Using ComGeom2 for Launch Abort System Design

    NASA Technical Reports Server (NTRS)

    Hawke, Veronica; Gage, Peter; Manning, Ted

    2007-01-01

    ComGeom2, a tool developed to generate Common Geometry representation for multidisciplinary analysis, has been used to create a large set of geometries for use in a design study requiring analysis by two computational codes. This paper describes the process used to generate the large number of configurations and suggests ways to further automate the process and make it more efficient for future studies. The design geometry for this study is the launch abort system of the NASA Crew Launch Vehicle.

  6. Spacecraft attitude control using a smart control system

    NASA Technical Reports Server (NTRS)

    Buckley, Brian; Wheatcraft, Louis

    1992-01-01

    Traditionally, spacecraft attitude control has been implemented using control loops written in native code for a space hardened processor. The Naval Research Lab has taken this approach during the development of the Attitude Control Electronics (ACE) package. After the system was developed and delivered, NRL decided to explore alternate technologies to accomplish this same task more efficiently. The approach taken by NRL was to implement the ACE control loops using systems technologies. The purpose of this effort was to: (1) research capabilities required of an expert system in processing a classic closed-loop control algorithm; (2) research the development environment required to design and test an embedded expert systems environment; (3) research the complexity of design and development of expert systems versus a conventional approach; and (4) test the resulting systems against the flight acceptance test software for both response and accuracy. Two expert systems were selected to implement the control loops. Criteria used for the selection of the expert systems included that they had to run in both embedded systems and ground based environments. Using two different expert systems allowed a comparison of the real-time capabilities, inferencing capabilities, and the ground-based development environment. The two expert systems chosen for the evaluation were Spacecraft Command Language (SCL), and NEXTPERT Object. SCL is a smart control system produced for the NRL by Interface and Control Systems (ICS). SCL was developed to be used for real-time command, control, and monitoring of a new generation of spacecraft. NEXPERT Object is a commercially available product developed by Neuron Data. Results of the effort were evaluated using the ACE test bed. The ACE test bed had been developed and used to test the original flight hardware and software using simulators and flight-like interfaces. The test bed was used for testing the expert systems in a 'near-flight' environment

  7. MSFC Skylab Orbital Workshop, volume 2. [design and development of electrical systems and attitude control system

    NASA Technical Reports Server (NTRS)

    1974-01-01

    The design and development of the Skylab Orbital Workshop are discussed. The subjects considered are: (1) thrust attitude control system, (2) solar array system, (3) electrical power distribution system, (4) communication and data acquisition system, (5) illumination system, and (6) caution and warning system.

  8. Abortion in early America.

    PubMed

    Acevedo, Z

    1979-01-01

    This piece describes abortion practices in use from the 1600s to the 19th century among the inhabitants of North America. The abortive techniques of women from different ethnic and racial groups as found in historical literature are revealed. Thus, the point is made that abortion is not simply a "now issue" that effects select women. Instead, it is demonstrated that it is a widespread practice as solidly rooted in our past as it is in the present.

  9. MAP Attitude Control System Design and Flight Performance

    NASA Technical Reports Server (NTRS)

    Andrews, S. F.; ODonnell, J. R.; Bauer, Frank H. (Technical Monitor)

    2002-01-01

    The Microwave Anisotropy Probe (MAP) is a follow-on to the Differential Microwave Radiometer (DMR) instrument on the Cosmic Background Explorer (COBE) spacecraft. To make a full-sky map of cosmic microwave background fluctuations, a combination fast spin and slow precession motion will be used that will cover the entire celestial sphere in six months. The spin rate should be an order of magnitude higher than the precession rate, and each rate should be tightly controlled. The sunline angle should be 22.5 +/- 0.25 deg. Sufficient attitude knowledge must be provided to yield instrument pointing to a standard deviation of 1.3 arc-minutes RSS three axes. In addition, the spacecraft must be able to acquire and hold the sunline at initial acquisition, and in the event of a failure. Finally. the spacecraft must be able to slew to the proper burn orientations and to the proper off-sunline attitude to start the compound spin. The design and flight performance of the Attitude Control System on MAP that meets these requirements will be discussed.

  10. [Bioethics and abortion. Debate].

    PubMed

    Diniz, D; Gonzalez Velez, A C

    1998-06-01

    Although abortion has been the most debated of all issues analyzed in bioethics, no moral consensus has been achieved. The problem of abortion exemplifies the difficulty of establishing social dialogue in the face of distinct moral positions, and of creating an independent academic discussion based on writings that are passionately argumentative. The greatest difficulty posed by the abortion literature is to identify consistent philosophical and scientific arguments amid the rhetorical manipulation. A few illustrative texts were selected to characterize the contemporary debate. The terms used to describe abortion are full of moral meaning and must be analyzed for their underlying assumptions. Of the four main types of abortion, only 'eugenic abortion', as exemplified by the Nazis, does not consider the wishes of the woman or couple--a fundamental difference for most bioethicists. The terms 'selective abortion' and 'therapeutic abortion' are often confused, and selective abortion is often called eugenic abortion by opponents. The terms used to describe abortion practitioners, abortion opponents, and the 'product' are also of interest in determining the style of the article. The video entitled "The Silent Scream" was a classic example of violent and seductive rhetoric. Its type of discourse, freely mixing scientific arguments and moral beliefs, hinders analysis. Within writings about abortion three extreme positions may be identified: heteronomy (the belief that life is a gift that does not belong to one) versus reproductive autonomy; sanctity of life versus tangibility of life; and abortion as a crime versus abortion as morally neutral. Most individuals show an inconsistent array of beliefs, and few groups or individuals identify with the extreme positions. The principal argument of proponents of legalization is respect for the reproductive autonomy of the woman or couple based on the principle of individual liberty, while heteronomy is the main principle of

  11. [Bioethics and abortion. Debate].

    PubMed

    Diniz, D; Gonzalez Velez, A C

    1998-06-01

    Although abortion has been the most debated of all issues analyzed in bioethics, no moral consensus has been achieved. The problem of abortion exemplifies the difficulty of establishing social dialogue in the face of distinct moral positions, and of creating an independent academic discussion based on writings that are passionately argumentative. The greatest difficulty posed by the abortion literature is to identify consistent philosophical and scientific arguments amid the rhetorical manipulation. A few illustrative texts were selected to characterize the contemporary debate. The terms used to describe abortion are full of moral meaning and must be analyzed for their underlying assumptions. Of the four main types of abortion, only 'eugenic abortion', as exemplified by the Nazis, does not consider the wishes of the woman or couple--a fundamental difference for most bioethicists. The terms 'selective abortion' and 'therapeutic abortion' are often confused, and selective abortion is often called eugenic abortion by opponents. The terms used to describe abortion practitioners, abortion opponents, and the 'product' are also of interest in determining the style of the article. The video entitled "The Silent Scream" was a classic example of violent and seductive rhetoric. Its type of discourse, freely mixing scientific arguments and moral beliefs, hinders analysis. Within writings about abortion three extreme positions may be identified: heteronomy (the belief that life is a gift that does not belong to one) versus reproductive autonomy; sanctity of life versus tangibility of life; and abortion as a crime versus abortion as morally neutral. Most individuals show an inconsistent array of beliefs, and few groups or individuals identify with the extreme positions. The principal argument of proponents of legalization is respect for the reproductive autonomy of the woman or couple based on the principle of individual liberty, while heteronomy is the main principle of

  12. [Toward constructing a research agenda: the threat posed by induced abortion in Latin America].

    PubMed

    Mundigo, A

    1994-01-01

    relation of abortion and contraception, costs of abortion, attitude of abortion practitioners and illegal abortionists, evaluations of the legal status of abortion, and models of risk detection and prevention.

  13. [Toward constructing a research agenda: the threat posed by induced abortion in Latin America].

    PubMed

    Mundigo, A

    1994-01-01

    relation of abortion and contraception, costs of abortion, attitude of abortion practitioners and illegal abortionists, evaluations of the legal status of abortion, and models of risk detection and prevention. PMID:12347892

  14. Impact on Hospital Practice of Liberalizing Abortions and Female Sterilizations

    PubMed Central

    Claman, A. David; Wakeford, John R.; Turner, John M. M.; Hayden, Brian

    1971-01-01

    The number of therapeutic abortions performed at the Vancouver General Hospital in 1969 was double the average number for the previous four years and in 1970 the total reached 1465. The more liberal attitude towards abortion has resulted in a decided reduction in the number of children available for adoption in the community. This policy has required a streamlining of the duties of the Therapeutic Abortion Committee and an alteration in the pattern of bed and operating-room utilization. By far the greatest number of abortions were performed on psychiatric-social grounds. The complication rate of 17% was influenced chiefly by the advanced duration of the gestation in a high proportion of cases. Gynecologists and hospitals must be prepared to assume their altered role in providing abortion and sterilization in today's society. ImagesFIG. 7 PMID:5088474

  15. Partial-birth abortion: the final frontier of abortion jurisprudence.

    PubMed

    Bopp, J; Cook, C R

    1998-01-01

    Partial-birth abortion bans patterned after the federal bill passed by both houses of Congress are constitutional. The clear legislative definition can be easily distinguished from other abortion procedures. Abortion precedents do not apply to such bans because the abortion right pertains to unborn human beings, not to those partially delivered. Such bans are also rationally-related to legitimate state interests. Even if abortion jurisprudence is deemed to apply in the partial-birth abortion context, a ban is still constitutional under Casey because a ban on partial-birth abortions does not impose an undue burden on the abortion right.

  16. Guiding change: provider voices in youth pre-abortion counselling in urban Vietnam.

    PubMed

    Nguyen, Helen Kim Hong; Martin, Philip; Chinh, Nguyen Quoc; Cong, Duong Dinh

    2010-08-01

    Pre-abortion counselling has a role in promoting safe sex practices and in preventing repeated unplanned pregnancies and repeated abortions among abortion-seeking women. Such counselling is essential in Vietnam, especially given the common use of abortion. Arguably, in Ho Chi Minh City, Vietnam, the delivery of pre-abortion counselling is more urgent for young women, who have historically been ignored by State reproductive health initiatives and are increasingly exposed to transmission of sexually transmitted infections (STIs), unplanned pregnancies and abortion. This paper charts urban Vietnamese service providers' discourses in pre-abortion counselling specific for reducing risks of additional unwanted pregnancies, repeat abortion and STI/HIV transmission among young Vietnamese women. Thirteen providers working in counselling delivery, management and programme-planning at the Reproductive Health Care Centre of Ho Chi Minh City participated in this study. Through qualitative interviews, this paper elicits a range of provider attitudes, considerations and approaches in pre-abortion counselling and presents these discourses using participant anecdotes. Demonstrated among participant responses were five key pre-abortion counselling phases for promoting effective family planning among young women. Topics covered in these counselling phases included abortion complications, post-abortion fertility return, contraception, behaviour change and STI/HIV prevention and sexual and reproductive health basics (SRH). The service provider discourses gleaned from this study are foundational for further research and development of best practice guidelines in pre-abortion counselling.

  17. Algorithm for Determination of Orion Ascent Abort Mode Achievability

    NASA Technical Reports Server (NTRS)

    Tedesco, Mark B.

    2011-01-01

    For human spaceflight missions, a launch vehicle failure poses the challenge of returning the crew safely to earth through environments that are often much more stressful than the nominal mission. Manned spaceflight vehicles require continuous abort capability throughout the ascent trajectory to protect the crew in the event of a failure of the launch vehicle. To provide continuous abort coverage during the ascent trajectory, different types of Orion abort modes have been developed. If a launch vehicle failure occurs, the crew must be able to quickly and accurately determine the appropriate abort mode to execute. Early in the ascent, while the Launch Abort System (LAS) is attached, abort mode selection is trivial, and any failures will result in a LAS abort. For failures after LAS jettison, the Service Module (SM) effectors are employed to perform abort maneuvers. Several different SM abort mode options are available depending on the current vehicle location and energy state. During this region of flight the selection of the abort mode that maximizes the survivability of the crew becomes non-trivial. To provide the most accurate and timely information to the crew and the onboard abort decision logic, on-board algorithms have been developed to propagate the abort trajectories based on the current launch vehicle performance and to predict the current abort capability of the Orion vehicle. This paper will provide an overview of the algorithm architecture for determining abort achievability as well as the scalar integration scheme that makes the onboard computation possible. Extension of the algorithm to assessing abort coverage impacts from Orion design modifications and launch vehicle trajectory modifications is also presented.

  18. Abort Gap Cleaning for LHC Run 2

    SciTech Connect

    Uythoven, Jan; Boccardi, Andrea; Bravin, Enrico; Goddard, Brennan; Hemelsoet, Georges-Henry; Höfle, Wolfgang; Jacquet, Delphine; Kain, Verena; Mazzoni, Stefano; Meddahi, Malika; Valuch, Daniel; Gianfelice-Wendt, Eliana

    2014-07-01

    To minimize the beam losses at the moment of an LHC beam dump the 3 μs long abort gap should contain as few particles as possible. Its population can be minimised by abort gap cleaning using the LHC transverse damper system. The LHC Run 1 experience is briefly recalled; changes foreseen for the LHC Run 2 are presented. They include improvements in the observation of the abort gap population and the mechanism to decide if cleaning is required, changes to the hardware of the transverse dampers to reduce the detrimental effect on the luminosity lifetime and proposed changes to the applied cleaning algorithms.

  19. The relationship between restrictive state abortion laws and postpartum depression.

    PubMed

    Medoff, Marshall H

    2014-01-01

    Is there a relationship between restrictive state abortion laws and postpartum depression? Do states with restrictive abortion laws have higher rates of postpartum depression? If there is a relationship, does it differ by the type of restrictive state abortion law? Using the Centers for Disease Control's 2008 Pregnancy Risk Assessment Monitoring System state survey of the percentage of women who gave birth and suffered from postpartum depression, states with and without restrictive abortion laws were compared. The empirical results found that there were no significant differences in the incidence of postpartum depression between states with parental involvement laws, mandatory counseling laws, waiting period laws, two-visit laws, and states without these restrictive abortion laws. States that prohibit the Medicaid funding of abortions have significantly higher rates of postpartum depression than in those states that fund Medicaid abortions. PMID:25068613

  20. Abortion in Poland.

    PubMed

    Szawarski, Z

    1991-12-01

    As of July 1991 abortion is still legal in Poland. Currently the Polish Parliament has taken a break from the debate because the issue is so important that any decision must not be made in past. There is strong pressure from the Catholic Church to eliminate access to abortion. In the fall the Polish people will vote for and elect their first truly democratic Parliament. Abortion does not seem to be playing as important a role as other political issues. In 1956 a law was passed that allowed a woman to have an abortion for medical or social reasons. This law resulted in allowing women in Poland to use abortion as their primary form of contraception. The vast majority of the abortions were performed under the social justification. Then, when democracy same to Poland with the help of the Catholic Church, an unprecedented debate in the mass media, churches, and educational institutions was stirred up. The government attempted to stay out of the debate at first. But as people from different side of the debate saw that they had an opportunity to influence things in their favor, they began to politicize the issue. Currently there are 4 different drafts of the new Polish abortion law. 3 of them radically condemn abortion while the 4th condemns it as a method of family planning, but allows to terminate pregnancies in order to save the life of the mother. PMID:1777450

  1. [Abortion in Japan].

    PubMed

    Yamamoto, K; Yamamoto, Y; Hayase, T

    1993-01-01

    In Japan, the artificial abortion is a penal offence; only in the presence of certain conditions it is authorized under the provision of the Eugenic Protection Law which was promulgated in 1948. According to the law, the artificial abortion is restricted to the period, in which the fetus is not viable outside of the uterus. This period is prescribed by notification from the Ministry of Public Welfare; up to now it has been shortened twice (1976, 1991). Due to the introduction of economic reasons in the list of conditions and the simplification of the procedure the artificial abortion in Japan was virtually liberalized. Prosecution for illegal abortion is very rare in recent years. The number of reported artificial abortions decreases; in the about last 30 years it reduced by half. However, the increase in the number of abortions in women younger than 20 years of age is a problem. The abortion in teenagers is late compared with that in other age groups. Although the number of neonaticides does not seem to increase, the increase in the number of abortions in teenagers remains a serious problem in Japan. PMID:8352642

  2. CMA abortion survey.

    PubMed Central

    1983-01-01

    Responses to the question as to whether abortions should be performed at the woman's request during the first trimester of pregnancy were evenly divided. There was support for abortion on socioeconomic grounds, during the first trimester, from 61.5% of the respondents. Termination of pregnancy beyond the first trimester was supported by a majority of the respondents only in cases in which the woman's life is in danger (73.9%) or in which there is evidence of a severe physical abnormality in the fetus (70.6%) or in cases in which the woman's physical health is in danger (55.5%). Those who said they would not support abortion under any circumstances constitute, at most, 5.1% of the respondents. Support for the maintenance or the elimination of therapeutic abortion committees was addressed in two questions and in both cases the respondents were evenly divided. The responses to these two questions were compared and found to be logically consistent. Only physicians should perform abortions, and they should be performed in hospitals with the woman either as an inpatient or, during the first trimester, as an outpatient. The performance of first-trimester abortions in provincially approved abortion clinics was supported by 47.3% of the respondents. Of the 885 respondents who wished to see some amendment to the Criminal Code, 409 stated that the term "health" as used in the Criminal Code relative to the legal grounds for therapeutic abortion should be defined. PMID:6861064

  3. Abortion in Adolescence.

    ERIC Educational Resources Information Center

    Campbell, Nancy B.; And Others

    1988-01-01

    Explored differences between 35 women who had abortions as teenagers and 36 women who had abortions as adults. Respondents reported on their premorbid psychiatric histories, the decision-making process itself, and postabortion distress symptoms. Antisocial and paranoid personality disorders, drug abuse, and psychotic delusions were significantly…

  4. Resolving the abortion controversy.

    PubMed

    Rosoff, J I

    1989-01-01

    This article addresses legislative attempts to reverse Roe v. Wade, U.S. abortion laws vis-á-vis those of other developed nations, socioeconomic factors figuring into the decision (or option) to abort, and the positive potential impact of improved contraceptive use.

  5. An active attitude control system for a drag sail satellite

    NASA Astrophysics Data System (ADS)

    Steyn, Willem Herman; Jordaan, Hendrik Willem

    2016-11-01

    The paper describes the development and simulation results of a full ADCS subsystem for the deOrbitSail drag sail mission. The deOrbitSail satellite was developed as part of an European FP7 collaboration research project. The satellite was launched and commissioning started on 10th July 2015. Various new actuators and sensors designed for this mission will be presented. The deOrbitSail satellite is a 3U CubeSat to deploy a 4 by 4 m drag sail from an initial 650 km circular polar low earth orbit. With an active attitude control system it will be shown that by maximising the drag force, the expected de-orbiting period from the initial altitude will be less than 50 days. A future application of this technology will be the use of small drag sails as low-cost devices to de-orbit LEO satellites, when they have reached their end of life, without having to use expensive propulsion systems. Simulation and Hardware-in-Loop experiments proved the feasibility of the proposed attitude control system. A magnetic-only control approach using a Y-Thomson spin, is used to detumble the 3U Cubesat with stowed sail and subsequently to 3-axis stabilise the satellite to be ready for the final deployment phase. Minituarised torquer rods, a nano-sized momentum wheel, attitude sensor hardware (magnetometer, sun, earth) developed for this phase will be presented. The final phase will be to deploy and 3-axis stabilise the drag sail normal to the satellite's velocity vector, using a combined Y-momentum wheel and magnetic controller. The design and performance improvements when using a 2-axis translation stage to adjust the sail centre-of-pressure to satellite centre-of-mass offset, will also be discussed, although for launch risk reasons this stage was not included in the final flight configuration. To accurately determine the drag sail's attitude during the sunlit part of the orbit, an accurate wide field of view dual sensor to measure both the sun and nadir vector direction was developed for

  6. Crew Exploration Vehicle Ascent Abort Coverage Analysis

    NASA Technical Reports Server (NTRS)

    Abadie, Marc J.; Berndt, Jon S.; Burke, Laura M.; Falck, Robert D.; Gowan, John W., Jr.; Madsen, Jennifer M.

    2007-01-01

    An important element in the design of NASA's Crew Exploration Vehicle (CEV) is the consideration given to crew safety during various ascent phase failure scenarios. To help ensure crew safety during this critical and dynamic flight phase, the CEV requirements specify that an abort capability must be continuously available from lift-off through orbit insertion. To address this requirement, various CEV ascent abort modes are analyzed using 3-DOF (Degree Of Freedom) and 6-DOF simulations. The analysis involves an evaluation of the feasibility and survivability of each abort mode and an assessment of the abort mode coverage using the current baseline vehicle design. Factors such as abort system performance, crew load limits, thermal environments, crew recovery, and vehicle element disposal are investigated to determine if the current vehicle requirements are appropriate and achievable. Sensitivity studies and design trades are also completed so that more informed decisions can be made regarding the vehicle design. An overview of the CEV ascent abort modes is presented along with the driving requirements for abort scenarios. The results of the analysis completed as part of the requirements validation process are then discussed. Finally, the conclusions of the study are presented, and future analysis tasks are recommended.

  7. Induced abortion: epidemiological aspects.

    PubMed Central

    Baird, D

    1975-01-01

    Sir Dugald Baird sketches the history of abortion legislation in Great Britain from the beginning of the century. In his views the 1967 Abortion Act has been one of the most important and beneficial pieces of social legislation enacted in Britain in the last 100 years. It has, however, brought problems both of administration in the hospitals and to individual doctors and nurses, particularly when the patients are young single women and even schoolgirls. One of the consequences of the Abortion Act has been a fall in maternal mortality and perinatal mortality rates. Abortion does not seem to be followed by serious emotional sequelae. Nevertheless recent changes in sexual mores have introduced new and serious social problems which are discussed in relation to the role of the doctor in his relationship with patients seeking abortion. PMID:765461

  8. Walking the abortion tightrope.

    PubMed

    Simms, M

    1971-03-01

    The abortion controversy in England was partially resolved on February 23, 1971, when Sir Keith Joseph, Secretary of State for Social Services, announced that an inquiry into the 1967 Abortion Act would be established, but one which would be concerned with the way the Act was working rather than the principles underlying it. Regional inequalities exist in the implementation of the Act (as with substandard services in Birmingham, Liverpool and Sheffield) due to opposition of the local gynecological establishment and a genuine shortage of facilities. These can be eliminated only through time and retirement and with public finance for more equal abortion facilities. The addition of a consultant clause into the Act would probably reduce the number of abortions in smaller private nursing homes, flood the National Health Service with abortion requests, and drive women back to criminal abortionists.

  9. Abortion applicants in Arkansas.

    PubMed

    Henker, F O

    1973-03-01

    The article reports upon the characteristics of 300 abortion applicants in Arkansas manifesting significant stress from unwanted pregnancy between May 1, 1970 and June 30, 1971. The sample is limited by the fact that all of these women had been willing to seek medical aid. Patients ranged from ages 13-47, 131 of them ages 17-21. 35% had had some college education; another 29% were high school graduates. 50.6%, 20.6%, and 27.3% were single, divorced, and married, respectively. 59.6% of the patients were primiparas. 18.3%, 9.6%, and 12.3% were classified as being neurotic, having psychophysiologic tendencies (gastrointestinal problems, obesity, chronic headaches), and having sociopathic features (passive-aggressive, frankly rebellious, delinquent, antisocial, alcoholic), respectively. 12 women had noticeable schizoid features; 4 women had mildly active schizophrenia. Fathers of the women were usually blue-collar workers (55.3%) or white-collar workers (24.6%). The most frequent ordinal sibling position among the women was oldest child (38%). Parental instability (1 or both parents lost through death, divorce, father usually away working, chronic alcoholism, etc.) was reported by 39.6% of the patients. Patients' attitudes toward the unwanted pregnancy included dislike of inexpediency of the situation (82.6%), self-depreciation (55.6%), and aversion (28.6%). Precipitated psychiatric disorders were for the greatest part mild. Manifesting symptoms included depression (66.7%), anxiety (21%), and mixed anxiety and depression (12.2%). Suicidal threats and gestures were made by 22 and 8 patients, respectively. In summary, the study reveals a group of predominantly Caucasian women from unstable, middle-class urban families who were going through an adjustment reaction to adolescence or adult life.

  10. When Is an Abortion Not an Abortion?

    PubMed

    Mutcherson, Kimberly

    2015-01-01

    Discussion about the similarities and differences between abortion and multi-fetal pregnancy reduction, including the tug-of-war over naming, highlights ongoing contestation about the relationship between the law, ethics, and women's bodies. Ultimately, the law must root itself in the realities of pregnancy including the physical and social consequences that any pregnancy creates for the woman who carries it.

  11. Abortion and abortifacients.

    PubMed

    King, T M

    1978-01-01

    It is argued that abortion research is needed to improve existing techniques and to develop new ones to overcome logistical, financial, and political obstacles to wider availability. Such developments are reviewed, including early pregnancy tests, menstrual regulation, improved cervical dilatation methods, new second trimester abortifacients (e.g., urea and prostaglandins), and new first trimester abortifacients (e.g., injection of ethanol into the uterus and prostaglandin pills or vaginal suppositories). This last is quite promising because of the possibility of self-administration, removing much of the need for medical intervention. Further research is urged on 1) long-term side effects of abortion, particularly late or multiple abortions; and 2) ways to improve the delivery and integration of abortions into family planning programs. It is noted that because abortion seekers demonstrate by the fact itself a strong motivation to control fertility and are therefore enthusiastic acceptors of contraceptive methods, the widespread availability of early pregnancy tests and abortion could be the most effective way of increasing contraceptive practice and reducing abortion itself.

  12. Avoidance of late abortion.

    PubMed

    1979-11-24

    Induced abortion is now a common procedure in the United States and Britain. Methods for performing induced abortion are reviewed. Menstrual regulation, aspiration with a hand-held syringe and a flexible cannula within 6 weeks of the last period, is not often practiced in Britain. Several developing countries are using this simple technique to advantage. Vacuum aspiration in the 1st 12 weeks of pregnancy is the main method being used everywhere for 1st trimester procedures. Mortality rates with this method are low and, in well-organized clinics with experienced personnel, the rates can be reduced even further. It is agreed that 2nd trimester procedures are more complex, both physically and emotionally. In the last several years, dilatation and evacuation (D&E) has increased in popularity for 2nd trimester procedures. Dilation of the cervix is generally accomplished with laminaria, evacuation of the uterus with forceps, and then suction curettage applied. This procedure has replaced intraamniotic infusion, hysterotomy, and hysterectomy as the most commonly - practiced method, despite its need for special surgical skills and good clinical backup. Follow-up of abortions is difficult. Different long-term effects have been noted with different abortion procedures. Early abortion seems to have only a modest effect, if that. Whether late abortion has long-lasting effects remains open to question. Late abortion should be avoided.

  13. Abortion cases worrying.

    PubMed

    Mwanza, G

    1994-01-01

    The writer believes that life begins the instant that an human sperm cell and ovule fuse. This life must be respected and preserved. Abortion is shameful, but tolerated when either the mother or would-be baby's life is at stake. As the number of abortions continue to increase, the controversy over a woman's right to abortion rages on. The author wonders whether questions about abortion will ever be resolved and considers some possible solutions with reference to Zambia. There are many early pregnancies among Zambian youths. A 1993 study found 207 abortions per year in the country among 15-19 year olds; this includes illegal, incomplete, and induced abortions. The Coordinator for the Young Women Christian Association in Lusaka thinks that inadequate sex education is one of the factors contributing to the ever-rising number of abortions today. Youths have sexual intercourse without understanding the possible consequences. Parents, community leaders, and school authorities should instead become more involved and teach children about sex to lessen the incidence of abortion. Specifically, parents should talk to their children about sex as they mature, teaching them about their biological reproductive features and functions. The author is convinced that once children and youths understand their bodies, it will be very easy for them to control their desires. Most male and female teens do, however, cite love and sexual desire as the primary motives for their first relationships. The writer also mentions how pregnant girls get expelled from school and that women experience mental and physical side effects from induced abortion.

  14. On-board Attitude Determination System (OADS). [for advanced spacecraft missions

    NASA Technical Reports Server (NTRS)

    Carney, P.; Milillo, M.; Tate, V.; Wilson, J.; Yong, K.

    1978-01-01

    The requirements, capabilities and system design for an on-board attitude determination system (OADS) to be flown on advanced spacecraft missions were determined. Based upon the OADS requirements and system performance evaluation, a preliminary on-board attitude determination system is proposed. The proposed OADS system consists of one NASA Standard IRU (DRIRU-2) as the primary attitude determination sensor, two improved NASA Standard star tracker (SST) for periodic update of attitude information, a GPS receiver to provide on-board space vehicle position and velocity vector information, and a multiple microcomputer system for data processing and attitude determination functions. The functional block diagram of the proposed OADS system is shown. The computational requirements are evaluated based upon this proposed OADS system.

  15. [Nursing care of clients in an abortion clinic].

    PubMed

    Corstiaensen, J; Kruiswijk, C

    1981-08-25

    The nursing care of clients visiting an abortion clinic for induced abortion is discussed. Generally good care of patients, psychosocially as well as somatically, is essential. For clients in an abortion clinic it is important that psychosocial care is optimal and technical procedures are medically responsible. The initial contact is very important to the client because first impressions of the clinic can be significant in the further course of the entire treatment. Both nurse and doctor are usually involved in the admission interview and preliminary examination. After the physician's anamnesis and internal examination to determine gestational age, patient and doctor determine future contraception. Both abortion and contraception problems are discussed and the treatment procedure explained. It is important to recognize possible patient coercion or ambivalence in which case the client is sometimes advised to think things over. The actual intervention is generally fairly short, from 5 to 15 minutes. The abortion can be emotionally taxing for the client. The nurse's role in providing reassurance and understanding is important. 30 to 60 minutes following intervention the patient can go home. Follow-up, usually 3-5 weeks after intervention, is the final phase of treatment. During this check-up and internal examination the client can discuss her experience and progress in contraception. Case studies are included giving insight into the background of abortion seekers. Abortion clinic nurses must possess specific characteristics and attitudes, such as: 1) a nonjudgmental attitude towards sexuality and induced abortion; 2) empathy in her relationship with clients; 3) personal warmth and ability to help client overcome fear; 4) ability to discuss sexuality and abortion sympathetically; 5) assessment of possible interpersonal relational problems of client; 6) ability to relate to and understand different ethnic groups; 7) be informed on contraceptive methods and agents; and 8

  16. Abortion politics in the United States, 1972-1994: from single issue to ideology.

    PubMed

    Hout, M

    1999-01-01

    This paper discusses issues of legal abortion and women's rights in the US. Abortion has been a political issue since the 1970s in the US. Following the Supreme Court's decision in the case of Roe vs. Wade, conservatives and liberals were divided based on their stand on abortion laws. Moreover, gender affects the range of opinions. Gender gap in abortion attitudes is most evident among conservatives. Conservative and extremely conservative women are against legal abortion more strongly than men with those same political views. Liberal and extremely liberal women have about the same amount of support for legal abortion as liberal men do. Labor force participation, marriage, education, and religion have impact on women and men's attitudes toward abortion; yet none of these explain the politicization of abortion. The change in support for legal abortion by political views and time period (1974-93) is shown in this paper. Women's rights are at the core when issues on abortion are to be discussed; the circumstances of the pregnancy and not the fetus become the focus. Although some women¿s groups support this stand, it faces a continuing debate with pro-life groups. The prevailing ideologies attempt to accommodate the new ideas expressed by the movement, while some of its stronger views are tempered in order to win a measure of political success. PMID:12349270

  17. Robust spacecraft attitude determination using global positioning system receivers

    NASA Astrophysics Data System (ADS)

    Madsen, Jared Dale

    This dissertation presents the development of a new algorithm for processing GPS signals to compute attitude solutions. This new algorithm utilizes an Extended Kalman Filter (EKF) with a quaternion state to combine signal to noise ratio (SNR) and differential carrier phase measurements. Attitude solutions can be obtained from these two measurement sources if multiple antennas are utilized which have non-aligned boresight vectors. The algorithm achieves improved integer resolution and accuracy for the carrier phase approach, and is able to perform on on-orbit antenna gain pattern calibration to aid the SNR approach. The developed algorithm is tested using both hardware in the loop space simulations and actual rooftop data. These tests are used to adjust the filter parameters and algorithm logic to achieve good performance. Testing is undertaken that demonstrates the accuracy and speed of the integer resolution process. Comparisons between rooftop and simulation results demonstrate that simulations accurately represent anticipated orbit conditions. These comparisons further show that the non-aligned antenna boresight vectors introduce little or no errors to the double difference carrier phase measurements. A trade study is conducted to assess the impact of the SNR measurements on the overall solution accuracy once the more accurate carrier phase measurements become available. The final version of the algorithm demonstrates solution accuracies of less than 0.5 degrees RMS in all three angles of rotation during rooftop tests, and accuracies on the order of 0.1 RMS in multipath-free orbit simulations. The developed and tested algorithm is then ported from its original code into a flight ready version available in NASA GEONS software. The versatility of the basic algorithm design is explored by creating a new system that incorporates magnetometer data with SNR and carrier phase measurements. The addition of the magnetometer measurements is shown to improve the integer

  18. ABORT GAP CLEANING IN RHIC.

    SciTech Connect

    DREES,A.; AHRENS,L.; III FLILLER,R.; GASSNER,D.; MCINTYRE,G.T.; MICHNOFF,R.; TRBOJEVIC,D.

    2002-06-03

    During the RHIC Au-run in 2001 the 200 MHz storage cavity system was used for the first time. The rebucketing procedure caused significant beam debunching in addition to amplifying debunching due to other mechanisms. At the end of a four hour store, debunched beam could account for approximately 30%-40% of the total beam intensity. Some of it will be in the abort gap. In order to minimize the risk of magnet quenching due to uncontrolled beam losses at the time of a beam dump, a combination of a fast transverse kicker and copper collimators were used to clean the abort gap. This report gives an overview of the gap cleaning procedure and the achieved performance.

  19. Abortion law across Australia--A review of nine jurisdictions.

    PubMed

    de Costa, Caroline; Douglas, Heather; Hamblin, Julie; Ramsay, Philippa; Shircore, Mandy

    2015-04-01

    This article reviews the current legal status of abortion in Australia and its implications. Australian abortion law has been a matter for the states since before Federation. In the years since Federation there have been significant reforms and changes in the abortion laws of some jurisdictions, although not all. Across Australia there are now nine sets of laws, state and Commonwealth, concerned with abortion. The test of a lawful abortion varies greatly across jurisdictions. In a number of states and territories, it is necessary to establish a serious risk to the physical or mental health of the woman if the pregnancy was to continue. In some cases, the certification of two doctors is required, particularly for abortions at later gestations. There are also physical restrictions on access, such as in South Australia and the Northern Territory where abortion must take place in a hospital. Only in the ACT has abortion been removed from the criminal law altogether. Variations in the law and restrictions arising from these are not consistent with the aims and provision of the universal, accessible health care system aspired to in Australia. There is an urgent need for overall reform and the introduction of uniformity to Australia's abortion laws, including removal of abortion from the criminal law.

  20. Botswana: abortion "debate" dynamics.

    PubMed

    Mogwe, A

    1992-01-01

    The Penal Code (Amendment) Bill or the abortion bill has the objective of liberalizing the current law on the regulation of abortion. Abortion had been strictly prohibited and carried stiff penalties. Anyone who attempted to assists a woman to procure an abortion could be liable to 7 years' imprisonment. However, medical abortions were distinguished as being medically determined to save the health of the mother. Demands for a reevaluation of the law came from the medical profession, and in response the Minister for Presidential Affairs submitted a bill to Parliament in November, 1990. The expressed government rationale for these proposed amendments was concern about the health of women. In Botswana about 200 women die yearly because of pregnancy. According to the proposed law: an abortion could be carried out within the first 16 weeks of pregnancy if: 1) the pregnancy were a result of rape, incest, or defilement (the impregnation of a girl aged 16 or less, the impregnation of imbeciles or idiots), 2) the physical or mental health of the woman were at risk because of the pregnancy, 3) the child would be born with a serious physical or mental abnormality. The abortion could be carried out only if 2 medical doctors approved it. The amendments fall far short of increasing women's control over their bodies. The Botswana Christian Council issued a statement early in the public debate. While it did not oppose the bill in its entirety, clear concern was expressed concerning the apparent right of determining who lives and who dies depending on the handicap of the child. This rather liberal position was challenged by the Roman Catholic Church which interpreted abortion as the murder of God-given life. The bill was nevertheless passed by Parliament in September 1991, and the President signed it on October 11, 1991. PMID:12288837

  1. Impacts of Personal Characteristics on Computer Attitude and Academic Users Information System Satisfaction.

    ERIC Educational Resources Information Center

    Lim, Kee-Sook

    2002-01-01

    Describes a study that evaluated the effects of computer experience, gender, and academic performance on computer attitude and user information system satisfaction in a university setting. Results of an analysis of variance showed that the personal characteristics made a difference in computer attitudes but not in academic computer system user…

  2. 75 FR 49550 - Fifth Meeting: RTCA Special Committee 219: Attitude and Heading Reference System (AHRS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-13

    ... Federal Aviation Administration Fifth Meeting: RTCA Special Committee 219: Attitude and Heading Reference...: Notice of RTCA Special Committee 219: Attitude and Heading Reference System (AHRS). SUMMARY: The FAA is... Heading Reference System (AHRS). DATES: The meeting will be held September 14-16, 2010 from 9 a.m. to 5...

  3. Moderate views of abortion.

    PubMed

    Sumner, L W

    1997-01-01

    This essay offers a moderate view of abortion that imposes a time limit for unrestricted abortion and specific indications for later abortions. The introduction notes that the discussion will provide a defense for this policy based on a moral analysis but that other options for moderates, especially options provided by freestanding views (the defense of which does not rest on any prior commitment about the morality of abortion), will also be considered. The next section considers the moral status of the fetus grounded in a criterion of moral standing that stipulates the necessary characteristics to achieve moral standing. This discussion concludes that a fetus acquires moral standing only when it becomes sentient. Section 3 moves the argument from ethics to politics to prove that a moderate policy must place no limitations on abortion before the time the fetus becomes sentient because before that time the fetus has no interest for the state to protect. The final section notes that some pro-choice advocates may be happier with the moderate policy proposed than with its controversial defense based on the moral status of the fetus and that another defense of a moderate policy could be based on a finding that the ethical issue can not be decided and that no view about abortion ethics is more reasonable than any other. The essay concludes that the ethical debate is ultimately unavoidable. PMID:12348328

  4. Abortion and regret.

    PubMed

    Greasley, Kate

    2012-12-01

    The article considers three theses about postabortion regret which seek to illustrate its pertinence to reasoning about abortion, and which are often deployed, either explicitly or implicitly, to dissuade women out of that reproductive choice. The first is that postabortion regret renders an abortion morally unjustified. The second is that that a relatively high incidence of postabortion regret-compared with a lower incidence of postnatal regret in the relevant comparator field-is good evidence for the moral impermissibility of abortion choice. The third is that high rates of postabortion regret suggest that abortion is not the most prudent or welfare-maximising choice for the woman concerned. All three theses argue for the compellingness of knowledge about postabortion regret in moral and practical reasoning about abortion, especially from the pregnant woman's point of view. This article argues that all three theses are flawed. In particular, it seeks to remind readers that feelings of regret directed at past decisions are often decoupled from the fact of the matter about their moral or rational justification. Moreover, certain features of reproductive decisions in particular make regret an especially unsuitable yardstick for actual justification in this context, and even less epistemically reliable as evidence for a lack of justification than it may be in other fields of decision-making. The implication is that rates of postabortion regret, even if they can be presumed to be higher than rates of postnatal regret, are not as pertinent to moral and practical reasoning about abortion as is sometimes suggested.

  5. Politics and abortion.

    PubMed

    Rosoff, J I

    1985-01-01

    The legalization of abortion in the United States by the Supreme Court in 1973 bypassed the political process in the majority of the states. Since then, however, political controversy and agitation in relation to abortion has become nationwide. From largely Catholic-based opposition, it has grown to encompass religious fundamentalists and to be a major part of the New Right's agenda. Abortion is now, pro and con, part of the platform of both political parties. The sweeping nature of the Supreme Court's decisions leaves the opposition with very little room to restrict abortion, short of overturning the decisions through a constitutional amendment. Such an amendment requires a two-thirds majority of Congress and passage is unlikely. However, funding bans on scores of federal programmes have succeeded in restricting access to abortion for the poor, the young and minorities. These restrictions are part of a long-term strategy to educate the public as to the evils of abortion with the aim of making it illegal again, either through the adoption of a constitutional amendment or by obtaining a reversal by a hoped-for change in membership of the Supreme Court.

  6. Cambodia passes new limits on abortion.

    PubMed

    1997-10-17

    According to international news sources, Cambodia's parliament approved a law limiting the circumstances under which abortions can be performed on October 6 [1997]. Members of parliament say the new law, the first ever passed regulating abortion in Cambodia, is intended to reduce maternal morality rates from abortions performed by unlicensed health practitioners under unsanitary conditions. Local news outlets report that the Cambodian Health Ministry estimates the maternal mortality at 4.7 deaths per 1000 live births. The rate in the US is 0.12 deaths per 1000 live births. The law requires that abortions be performed by licensed health professionals in hospitals and certified clinics within the first trimester of pregnancy, and that women under the age of 18 must obtain parental consent. The new law also sets harsh penalties for those who harm women during illegal procedures--up to 5 years in prison if a woman is injured and up to 10 years if she dies. Opponents of the law say they fear that the new restrictions will push abortion even further underground, as the hospital system cannot handle the current demand for abortion. PMID:12292784

  7. [Religion, morality and politics: the abortion debate].

    PubMed

    Ladriere, P

    1982-01-01

    The views of morality enunciated by the Protestant and Catholic churches in the process of France's abortion law revision are examined through an analysis of the testimony of each church and its moral theologians during hearings held from July-November 1973 by the Commission of Cultural, Family, and Social Affairs of the National Assembly concerning the proposed abortion legislation. The offical Catholic Church position, which restated a neoscholastic philosophy with its theory of human nature, natural law, natural right, and natural morality, was opposed by 2 priests who participated as members of other organizations. The moral principles behind the official Catholic position included the sacred and absolute principle of respect for life, the beginning of human life at conception, and the responsibility to protect the fetus as a human being. Internal Catholic challenges to the official position appeared to rest principally on the question of when life begins but also touched on the inappropriateness of viewing unwanted pregnancy as a punishment for sexual activity, the constant recourse to authority of the church, and the reluctance to reexamine questions on new evidence. Faced with the likely replacement of abortion law consistent with Catholic morality by 1 seriously at variance, the French Church and state while justifying their organized opposition to any change. The right of the church to impose its views on the legislature and on society, the view of the cultural context of abortion as a degradation of public attitudes expressed in rejection of children, the necessary connections between sexuality and fertility, the necessity for women to be able to control their fertility if they were to participate fully in society, the debased conditions in which thousands of illegal abortions occurred or the exaggeration of such conditions were other issues. Proposed legislation on abortion was opposed by the official Catholic position, which instead called for a vaguely

  8. [Religion, morality and politics: the abortion debate].

    PubMed

    Ladriere, P

    1982-01-01

    The views of morality enunciated by the Protestant and Catholic churches in the process of France's abortion law revision are examined through an analysis of the testimony of each church and its moral theologians during hearings held from July-November 1973 by the Commission of Cultural, Family, and Social Affairs of the National Assembly concerning the proposed abortion legislation. The offical Catholic Church position, which restated a neoscholastic philosophy with its theory of human nature, natural law, natural right, and natural morality, was opposed by 2 priests who participated as members of other organizations. The moral principles behind the official Catholic position included the sacred and absolute principle of respect for life, the beginning of human life at conception, and the responsibility to protect the fetus as a human being. Internal Catholic challenges to the official position appeared to rest principally on the question of when life begins but also touched on the inappropriateness of viewing unwanted pregnancy as a punishment for sexual activity, the constant recourse to authority of the church, and the reluctance to reexamine questions on new evidence. Faced with the likely replacement of abortion law consistent with Catholic morality by 1 seriously at variance, the French Church and state while justifying their organized opposition to any change. The right of the church to impose its views on the legislature and on society, the view of the cultural context of abortion as a degradation of public attitudes expressed in rejection of children, the necessary connections between sexuality and fertility, the necessity for women to be able to control their fertility if they were to participate fully in society, the debased conditions in which thousands of illegal abortions occurred or the exaggeration of such conditions were other issues. Proposed legislation on abortion was opposed by the official Catholic position, which instead called for a vaguely

  9. Health professionals' perceptions of the psychological consequences of abortion.

    PubMed

    Baluk, U; O'Neill, P O

    1980-02-01

    Measures of depression, guilt, and state and trait anxiety were administered to doctors, nurses, and social workers under two conditions, self-report and role play. In the role-play condition, they were asked to complete the questions as would a woman who had undergone an abortion the previous day. Half of the subjects in each group were experienced with abortion patients, and half were inexperienced students. All three professional groups expected extreme depression, guilt, and anxiety on the part of the abortion patient, when compared with their own scores. These expectations do not match the experience reported by abortion patients in this and other studies. As previously found, nurses were more extreme in their attitudes; but this is explained in terms of their self-report data, which were also more extreme on all measures.

  10. Feasibility study of scanning celestial Attitude System (SCADS) for Earth Resources Technology Satellite (ERTS)

    NASA Technical Reports Server (NTRS)

    1971-01-01

    The feasibility of using the Scanning Celestial Attitude Determination System (SCADS) during Earth Resources Technology Satellite (ERTS) missions to compute an accurate spacecraft attitude by use of stellar measurements is considered. The spacecraft is local-vertical-stabilized. A heuristic discussion of the SCADS concept is first given. Two concepts are introduced: a passive system which contains no moving parts, and an active system in which the reticle is caused to rotate about the sensor's axis. A quite complete development of the equations of attitude motions is then given. These equations are used to generate the true attitude which in turn is used to compute the transit times of detectable stars and to determine the errors associated with the SCADS attitude. A more complete discussion of the analytical foundation of SCADS concept and its use for the geometries particular to this study, as well as salient design parameters for the passive and active systems are included.

  11. Analysis of the TDRS multiple access system for possible use as an attitude control system sensor

    NASA Technical Reports Server (NTRS)

    Blevins, Bruce Allyn; Sank, Victor J.

    1993-01-01

    A member of the constellation of TDR satellites (TDRS) has experienced a failure of its prime earth sensor. Failure of the remaining earth sensor could result in the inability of the satellite to control its attitude and provide user services. Loss of the satellite would be a serious event. The multiple access (MA) antenna array on the TDRS has been proposed for use as a backup sensor for the attitude control system. This paper describes our analysis of the performance of the MA array as an interferometer used for accurate attitude determination. A least squares fit of a plane to the MA phase information appears to represent the TDRS body roll and pitch within about 0.1 deg. This is sufficient for SGL pointing and MA and SSA user services. Analytic improvements that include ionospheric correction may yield sufficient accuracy for KSA user services.

  12. Insights from an expert group meeting on the definition and measurement of unsafe abortion.

    PubMed

    Sedgh, Gilda; Filippi, Veronique; Owolabi, Onikepe O; Singh, Susheela D; Askew, Ian; Bankole, Akinrinola; Benson, Janie; Rossier, Clementine; Pembe, Andrea B; Adewole, Isaac; Ganatra, Bela; MacDonagh, Sandra

    2016-07-01

    Until recently, WHO operationally defined unsafe abortion as illegal abortion. In the past decade, however, the incidence of abortion by misoprostol administration has increased in countries with restrictive abortion laws. Access to safe surgical abortions has also increased in many such countries. An important effect of these trends has been that, even in an illegal environment, abortion is becoming safer, and an updated system for classifying abortion in accordance with safety is needed. Numerous factors aside from abortion method or legality should be taken into consideration in developing such a classification system. An Expert Meeting on the Definition and Measurement of Unsafe Abortion was convened in London, UK, on January 9-10, 2014, to move toward developing a classification system that both reflects current conditions and acknowledges the gradient of risk associated with abortion. The experts also discussed the types of research needed to monitor the incidence of abortion at each level of safety. These efforts are urgently needed if we are to ensure that preventing unsafe abortion is appropriately represented on the global public health agenda. Such a classification system would also motivate investment in research to accurately measure and monitor abortion incidence across categories of safety. PMID:27062249

  13. Insights from an expert group meeting on the definition and measurement of unsafe abortion.

    PubMed

    Sedgh, Gilda; Filippi, Veronique; Owolabi, Onikepe O; Singh, Susheela D; Askew, Ian; Bankole, Akinrinola; Benson, Janie; Rossier, Clementine; Pembe, Andrea B; Adewole, Isaac; Ganatra, Bela; MacDonagh, Sandra

    2016-07-01

    Until recently, WHO operationally defined unsafe abortion as illegal abortion. In the past decade, however, the incidence of abortion by misoprostol administration has increased in countries with restrictive abortion laws. Access to safe surgical abortions has also increased in many such countries. An important effect of these trends has been that, even in an illegal environment, abortion is becoming safer, and an updated system for classifying abortion in accordance with safety is needed. Numerous factors aside from abortion method or legality should be taken into consideration in developing such a classification system. An Expert Meeting on the Definition and Measurement of Unsafe Abortion was convened in London, UK, on January 9-10, 2014, to move toward developing a classification system that both reflects current conditions and acknowledges the gradient of risk associated with abortion. The experts also discussed the types of research needed to monitor the incidence of abortion at each level of safety. These efforts are urgently needed if we are to ensure that preventing unsafe abortion is appropriately represented on the global public health agenda. Such a classification system would also motivate investment in research to accurately measure and monitor abortion incidence across categories of safety.

  14. 76 FR 80447 - Eighth Meeting: RTCA Special Committee 219: Attitude and Heading Reference Systems (AHRS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-23

    ... Federal Aviation Administration Eighth Meeting: RTCA Special Committee 219: Attitude and Heading Reference...). ACTION: Notice of RTCA Special Committee 219: Attitude and Heading Reference Systems (AHRS). SUMMARY: The FAA is issuing this notice to advise the public of the eighth meeting of RTCA Special Committee...

  15. Technology Use in Rwandan Secondary Schools: An Assessment of Teachers' Attitudes towards Geographic Information Systems (GIS)

    ERIC Educational Resources Information Center

    Akinyemi, Felicia O.

    2016-01-01

    Technology use is evident in all spheres of human endeavour. Focusing on technology use in education, this paper examines teachers' attitudes towards geographic information system (GIS). An assessment was made of GIS teachers in Rwandan secondary schools. Key areas covered include how GIS is implemented in schools, teachers' attitudes and…

  16. Abortion and rape.

    PubMed

    Barry-Martin, P

    1977-10-26

    The letter is an answer to a previous letter which appeared in the same journal and which was discrediting, according to the author of this letter, the Royal Commission on Contraception, Sterilization, and Abortion. The earlier letter refutes a quote from "Abortion and Social Justice" used by the Commission, regarding the situation in Colorado after rape became an indication for abortion. The quote reports that although between 1967-1971 the number of abortions for rape totalled 290, no rapist was charged or convicted for the crime. However, according to the author of this letter, the actual quote reads somewhat differently, and states that, during the same period, "no rapist was ever charged with his crime, much less convicted of it, which casts some real doubts on the reality of the alleged rapes." The meaning of this passage is that none of the alleged rapists had actually caused the 290 pregnancies. From records and government statistics it is possible to count about 3300 cases of rape known to the police in Colorado for the years 1967-1971. To suggest that none of these cases were charged or convicted is ridiculous. The author also states that rape as an indication for abortion will lead to abuse of the law, and that pregnancy for actual rape is rare.

  17. The Response of Abortion Demand to Changes in Abortion Costs

    ERIC Educational Resources Information Center

    Medoff, Marshall H.

    2008-01-01

    This study uses pooled cross-section time-series data, over the years 1982, 1992 and 2000, to estimate the impact of various restrictive abortion laws on the demand for abortion. This study complements and extends prior research by explicitly including the price of obtaining an abortion in the estimation. The empirical results show that the real…

  18. Abortion and human rights.

    PubMed

    Shaw, Dorothy

    2010-10-01

    Abortion has been a reality in women's lives since the beginning of recorded history, typically with a high risk of fatal consequences, until the last century when evolutions in the field of medicine, including techniques of safe abortion and effective methods of family planning, could have ended the need to seek unsafe abortion. The context of women's lives globally is an important but often ignored variable, increasingly recognised in evolving human rights especially related to gender and reproduction. International and regional human rights instruments are being invoked where national laws result in violations of human rights such as health and life. The individual right to conscientious objection must be respected and better understood, and is not absolute. Health professional organisations have a role to play in clarifying responsibilities consistent with national laws and respecting reproductive rights. Seeking common ground using evidence rather than polarised opinion can assist the future focus. PMID:20303830

  19. A compromise on abortion?

    PubMed

    Rhoden, N K

    1989-01-01

    Rhoden's article is one of three on "Abortion: searching for common ground" in this issue of the Hastings Center Report. Her article, together with those by M. Mahowald and M. Glendon, was prompted by the expectation that the impending U.S. Supreme Court decision in Webster v. Reproductive Health Services (3 July 1989) would overturn or restrict Roe v. Wade (1973). Rhoden, an advocate for the pro-choice position, asks whether a compromise leading to an acceptable regulatory policy is possible or desirable among those on opposite sides of the abortion issue. She identifies several reasons why the Roe decision is vulnerable to review, but argues that effective education about sexuality and comprehensive social support of women are better approaches to abortion than restrictive legislation. PMID:2663778

  20. Attitude Heading Reference System Using MEMS Inertial Sensors with Dual-Axis Rotation

    PubMed Central

    Kang, Li; Ye, Lingyun; Song, Kaichen; Zhou, Yang

    2014-01-01

    This paper proposes a low cost and small size attitude and heading reference system based on MEMS inertial sensors. A dual-axis rotation structure with a proper rotary scheme according to the design principles is applied in the system to compensate for the attitude and heading drift caused by the large gyroscope biases. An optimization algorithm is applied to compensate for the installation angle error between the body frame and the rotation table's frame. Simulations and experiments are carried out to evaluate the performance of the AHRS. The results show that the proper rotation could significantly reduce the attitude and heading drifts. Moreover, the new AHRS is not affected by magnetic interference. After the rotation, the attitude and heading are almost just oscillating in a range. The attitude error is about 3° and the heading error is less than 3° which are at least 5 times better than the non-rotation condition. PMID:25268911

  1. Efficient and Optimal Attitude Determination Using Recursive Global Positioning System Signal Operations

    NASA Technical Reports Server (NTRS)

    Crassidis, John L.; Lightsey, E. Glenn; Markley, F. Landis

    1998-01-01

    In this paper, a new and efficient algorithm is developed for attitude determination from Global Positioning System signals. The new algorithm is derived from a generalized nonlinear predictive filter for nonlinear systems. This uses a one time-step ahead approach to propagate a simple kinematics model for attitude determination. The advantages of the new algorithm over previously developed methods include: it provides optimal attitudes even for coplanar baseline configurations; it guarantees convergence even for poor initial conditions; it is a non-iterative algorithm; and it is computationally efficient. These advantages clearly make the new algorithm well suited to on-board applications. The performance of the new algorithm is tested on a dynamic hardware simulator. Results indicate that the new algorithm accurately estimates the attitude of a moving vehicle, and provides robust attitude estimates even when other methods, such as a linearized least-squares approach, fail due to poor initial starting conditions.

  2. Connecticut's new abortion statute.

    PubMed

    Healey, J M

    1990-08-01

    Amid the raging controversy on whether minors should have the same access to abortion as adults, the Connecticut legislature has passed a compromise statues that recognizes a minor's right seek an abortion, while imposing certain requirements. Those who seek to regulate access argue that because minors may lack the maturity to make a valid decision, parental notification is necessary; advocates of minors' right to access hold that it should be the minor who makes such personal decision. In an effort to resolve the conflict, Connecticut's law says that young women under the age of 16 must receive pregnancy-related information before an abortion can take place. Specifically., a physician or counselor is required to: 1) explain to the minor that the information provided is not intended to coerce or persuade her into making a particular choice; 2) explain that she may consider her decision any time prior to the operation or during the time period when abortion is legally permitted; 3) explain the alternatives of either carrying out the pregnancy or getting an abortion, including information on public and private agencies that may assist in carrying out the decision; 4) inform her that pubic and private agencies provide information on birth control; 5) discuss the possibility of involving the minor's parents(s), guardian(s), or other adult family member in the decision; and 6) allow the minor to ask questions and to obtain useful information. After the completion of the process, the minor must sign a form that attests that the requirements have been met, and -- if applicable -- that the minor has decided to involve a parent or relative. In cases where the health or safety of a minor requires and abortion, the Connecticut statute allows for the provisions to be waived.

  3. TRAP abortion laws and partisan political party control of state government.

    PubMed

    Medoff, Marshall H; Dennis, Christopher

    2011-01-01

    Targeted Regulation of Abortion Providers (or TRAP) laws impose medically unnecessary and burdensome regulations solely on abortion providers in order to make abortion services more expensive and difficult to obtain. Using event history analysis, this article examines the determinants of the enactment of a TRAP law by states over the period 1974–2008. The empirical results find that Republican institutional control of a state's legislative/executive branches is positively associated with a state enacting a TRAP law, while Democratic institutional control is negatively associated with a state enacting a TRAP law. The percentage of a state's population that is Catholic, public anti-abortion attitudes, state political ideology, and the abortion rate in a state are statistically insignificant predictors of a state enacting a TRAP law. The empirical results are consistent with the hypothesis that abortion is a redistributive issue and not a morality issue.

  4. Reproductive health and the question of abortion in Botswana: a review.

    PubMed

    Smith, Stephanie S

    2013-12-01

    The complications of unsafe, illegal abortions are a significant cause of maternal mortality in Botswana. The stigma attached to abortion leads some women to seek clandestine procedures, or alternatively, to carry the fetus to term and abandon the infant at birth. I conducted research into perceptions of abortion in urban Botswana in order to understand the social and cultural obstacles to women's reproductive autonomy, focusing particularly on attitudes to terminating a pregnancy. I carried out 21 interviews with female and male urban adult Batswana. This article constitutes a review of the abortion issue in Botswana based on my research. Restrictive laws must eventually be abolished to allow women access to safe, timely abortions. My findings however, suggest that socio-cultural factors, not punitive laws, present the greatest barriers to women seeking to terminate an unwanted pregnancy. These factors must be addressed so that effective local solutions to unsafe abortion can be generated. PMID:24558779

  5. [On research concerning abortion in Latin America and studies on women].

    PubMed

    Barroso, C

    1989-01-01

    "Research on abortion is important for the Latin American women's movements. Rates of illegal abortion seem quite high. Cuba is the only country where abortion is legal. Policies on abortion are closely related to attitudes towards sexuality and women. Contraception has, in addition to health and economic costs, social and psychological costs, therefore unwanted pregnancies are the normal results of behavior that follows a certain rationality. Consequences of abortion depend on a woman's integration in her social network. The Latin American scene has two main differences from industrialized countries: mass poverty and the influence of the Catholic Church. Conditions of poverty affect less the motivation for abortion and more the conditions of its use." (SUMMARY IN ENG)

  6. Brazilian adolescents’ knowledge and beliefs about abortion methods: a school-based internet inquiry

    PubMed Central

    2014-01-01

    Background Internet surveys that draw from traditionally generated samples provide the unique conditions to engage adolescents in exploration of sensitive health topics. Methods We examined awareness of unwanted pregnancy, abortion behaviour, methods, and attitudes toward specific legal indications for abortion via a school-based internet survey among 378 adolescents aged 12–21 years in three Rio de Janeiro public schools. Results Forty-five percent knew peers who had undergone an abortion. Most students (66.0%) did not disclose abortion method knowledge. However, girls (aOR 4.2, 95% CI 2.4-7.2), those who had experienced their sexual debut (aOR1.76, 95% CI 1.1-3.0), and those attending a prestigious magnet school (aOR 2.7 95% CI 1.4-6.3) were more likely to report methods. Most abortion methods (79.3%) reported were ineffective, obsolete, and/or unsafe. Herbs (e.g. marijuana tea), over-the-counter medications, surgical procedures, foreign objects and blunt trauma were reported. Most techniques (85.2%) were perceived to be dangerous, including methods recommended by the World Health Organization. A majority (61.4%) supported Brazil’s existing law permitting abortion in the case of rape. There was no association between gender, age, sexual debut, parental education or socioeconomic status and attitudes toward legal abortion. However, students at the magnet school supported twice as many legal indications (2.7, SE.27) suggesting a likely role of peers and/or educators in shaping abortion views. Conclusions Abortion knowledge and attitudes are not driven simply by age, religion or class, but rather a complex interplay that includes both social spaces and gender. Prevention of abortion morbidity and mortality among adolescents requires comprehensive sexuality and reproductive health education that includes factual distinctions between safe and unsafe abortion methods. PMID:24521075

  7. Space Shuttle Abort Evolution

    NASA Technical Reports Server (NTRS)

    Henderson, Edward M.; Nguyen, Tri X.

    2011-01-01

    This paper documents some of the evolutionary steps in developing a rigorous Space Shuttle launch abort capability. The paper addresses the abort strategy during the design and development and how it evolved during Shuttle flight operations. The Space Shuttle Program made numerous adjustments in both the flight hardware and software as the knowledge of the actual flight environment grew. When failures occurred, corrections and improvements were made to avoid a reoccurrence and to provide added capability for crew survival. Finally some lessons learned are summarized for future human launch vehicle designers to consider.

  8. Design and Stability of an On-Orbit Attitude Control System Using Reaction Control Thrusters

    NASA Technical Reports Server (NTRS)

    Hall, Robert A.; Hough, Steven; Orphee, Carolina; Clements, Keith

    2016-01-01

    NASA is providing preliminary design and requirements for the Space Launch System Exploration Upper Stage (EUS). The EUS will provide upper stage capability for vehicle ascent as well as on-orbit control capability. Requirements include performance of on-orbit burn to provide Orion vehicle with escape velocity. On-orbit attitude control is accommodated by a on-off Reaction Control System (RCS). Paper provides overview of approaches for design and stability of an attitude control system using a RCS.

  9. Systems of attitudes towards production in the pork industry. A cross-national study.

    PubMed

    Sørensen, Bjarne Taulo; Barcellos, Marcia Dutra de; Olsen, Nina Veflen; Verbeke, Wim; Scholderer, Joachim

    2012-12-01

    Existing research on public attitudes towards agricultural production systems is largely descriptive, abstracting from the processes through which members of the general public generate their evaluations of such systems. The present paper adopts a systems perspective on such evaluations, understanding them as embedded into a wider attitude system that consists of attitudes towards objects of different abstraction levels, ranging from personal value orientations over general socio-political attitudes to evaluations of specific characteristics of agricultural production systems. It is assumed that evaluative affect propagates through the system in such a way that the system becomes evaluatively consistent and operates as a schema for the generation of evaluative judgments. In the empirical part of the paper, the causal structure of an attitude system from which people derive their evaluations of pork production systems was modelled. The analysis was based on data from a cross-national survey involving 1931 participants from Belgium, Denmark, Germany and Poland. The survey questionnaire contained measures of personal value orientations and attitudes towards environment and nature, industrial food production, food and the environment, technological progress, animal welfare, local employment and local economy. In addition, the survey included a conjoint task by which participants' evaluations of the importance of production system attributes were measured. The data were analysed by means of causal search algorithms and structural equation models. The results suggest that evaluative judgments of the importance of pork production system attributes are generated in a schematic manner, driven by personal value orientations. The effect of personal value orientations was strong and largely unmediated by attitudes of an intermediate level of generality, suggesting that the dependent variables in the particular attitude system that was modelled here can be understood as value

  10. A preliminary 6 DOF attitude and translation control system design for Starprobe

    NASA Technical Reports Server (NTRS)

    Mak, P.; Mettler, E.; Vijayarahgavan, A.

    1981-01-01

    The extreme thermal environment near perihelion and the high-accuracy gravitational science experiments impose unique design requirements on various subsystems of Starprobe. This paper examines some of these requirements and their impact on the preliminary design of a six-degree-of-freedom attitude and translational control system. Attention is given to design considerations, the baseline attitude/translational control system, system modeling, and simulation studies.

  11. Multiple Induced Abortions: Danish Experience.

    ERIC Educational Resources Information Center

    Osler, Mogens; David, Henry P.; Morgall, Janine M.

    1997-01-01

    Women having an induced abortion in an urban clinic were studied. First, second, and third time aborters (N=150) were interviewed. Variables including reasons for choosing abortion, life situations, contraceptive risk-taking, and ease of becoming pregnant were examined. Related studies and suggestions for postabortion counseling are discussed.…

  12. Abortion and compelled physician speech.

    PubMed

    Orentlicher, David

    2015-01-01

    Informed consent mandates for abortion providers may infringe the First Amendment's freedom of speech. On the other hand, they may reinforce the physician's duty to obtain informed consent. Courts can promote both doctrines by ensuring that compelled physician speech pertains to medical facts about abortion rather than abortion ideology and that compelled speech is truthful and not misleading. PMID:25846035

  13. Abortion and compelled physician speech.

    PubMed

    Orentlicher, David

    2015-01-01

    Informed consent mandates for abortion providers may infringe the First Amendment's freedom of speech. On the other hand, they may reinforce the physician's duty to obtain informed consent. Courts can promote both doctrines by ensuring that compelled physician speech pertains to medical facts about abortion rather than abortion ideology and that compelled speech is truthful and not misleading.

  14. Did Legalized Abortion Lower Crime?

    ERIC Educational Resources Information Center

    Joyce, Ted

    2004-01-01

    Changes in homicide and arrest rates were compared among cohorts born before and after legalization of abortion and those who were unexposed to legalized abortion. It was found that legalized abortion improved the lives of many women as they could avoid unwanted births.

  15. X-33 Attitude Control System Design for Ascent, Transition, and Entry Flight Regimes

    NASA Technical Reports Server (NTRS)

    Hall, Charles E.; Gallaher, Michael W.; Hendrix, Neal D.

    1998-01-01

    The Vehicle Control Systems Team at Marshall Space Flight Center, Systems Dynamics Laboratory, Guidance and Control Systems Division is designing under a cooperative agreement with Lockheed Martin Skunkworks, the Ascent, Transition, and Entry flight attitude control system for the X-33 experimental vehicle. Ascent flight control begins at liftoff and ends at linear aerospike main engine cutoff (NECO) while Transition and Entry flight control begins at MECO and concludes at the terminal area energy management (TAEM) interface. TAEM occurs at approximately Mach 3.0. This task includes not only the design of the vehicle attitude control systems but also the development of requirements for attitude control system components and subsystems. The X-33 attitude control system design is challenged by a short design cycle, the design environment (Mach 0 to about Mach 15), and the X-33 incremental test philosophy. The X-33 design-to-launch cycle of less than 3 years requires a concurrent design approach while the test philosophy requires design adaptation to vehicle variations that are a function of Mach number and mission profile. The flight attitude control system must deal with the mixing of aerosurfaces, reaction control thrusters, and linear aerospike engine control effectors and handle parasitic effects such as vehicle flexibility and propellant sloshing from the uniquely shaped propellant tanks. The attitude control system design is, as usual, closely linked to many other subsystems and must deal with constraints and requirements from these subsystems.

  16. An Application of UAV Attitude Estimation Using a Low-Cost Inertial Navigation System

    NASA Technical Reports Server (NTRS)

    Eure, Kenneth W.; Quach, Cuong Chi; Vazquez, Sixto L.; Hogge, Edward F.; Hill, Boyd L.

    2013-01-01

    Unmanned Aerial Vehicles (UAV) are playing an increasing role in aviation. Various methods exist for the computation of UAV attitude based on low cost microelectromechanical systems (MEMS) and Global Positioning System (GPS) receivers. There has been a recent increase in UAV autonomy as sensors are becoming more compact and onboard processing power has increased significantly. Correct UAV attitude estimation will play a critical role in navigation and separation assurance as UAVs share airspace with civil air traffic. This paper describes attitude estimation derived by post-processing data from a small low cost Inertial Navigation System (INS) recorded during the flight of a subscale commercial off the shelf (COTS) UAV. Two discrete time attitude estimation schemes are presented here in detail. The first is an adaptation of the Kalman Filter to accommodate nonlinear systems, the Extended Kalman Filter (EKF). The EKF returns quaternion estimates of the UAV attitude based on MEMS gyro, magnetometer, accelerometer, and pitot tube inputs. The second scheme is the complementary filter which is a simpler algorithm that splits the sensor frequency spectrum based on noise characteristics. The necessity to correct both filters for gravity measurement errors during turning maneuvers is demonstrated. It is shown that the proposed algorithms may be used to estimate UAV attitude. The effects of vibration on sensor measurements are discussed. Heuristic tuning comments pertaining to sensor filtering and gain selection to achieve acceptable performance during flight are given. Comparisons of attitude estimation performance are made between the EKF and the complementary filter.

  17. System and method for generating attitude determinations using GPS

    NASA Technical Reports Server (NTRS)

    Cohen, Clark E. (Inventor)

    1996-01-01

    A GPS attitude receiver for determining the attitude of a moving vehicle in conjunction with a first, a second, a third, and a fourth antenna mounted to the moving vehicle. Each of the antennas receives a plurality of GPS signals that each include a carrier component. For each of the carrier components of the received GPS signals there is an integer ambiguity associated with the first and fourth antennas, an integer ambiguity associated with second and fourth antennas, and an integer ambiguity associated with the third and fourth antennas. The GPS attitude receiver measures phase values for the carrier components of the GPS signals received from each of the antennas at a plurality of measurement epochs during an initialization period and at a measurement epoch after the initialization period. In response to the phase values measured at the measurement epochs during the initialization period, the GPS attitude receiver computes integer ambiguity resolution values representing resolution of the integer ambiguities. Then, in response to the computed integer ambiguity resolution values and the phase value measured at the measurement epoch after the initialization period, it computes values defining the attitude of the moving vehicle at the measurement epoch after the initialization period.

  18. A gamma ray observatory ground attitude error analysis study using the generalized calibration system

    NASA Technical Reports Server (NTRS)

    Ketchum, E.

    1988-01-01

    The Goddard Space Flight Center (GSFC) Flight Dynamics Division (FDD) will be responsible for performing ground attitude determination for Gamma Ray Observatory (GRO) support. The study reported in this paper provides the FDD and the GRO project with ground attitude determination error information and illustrates several uses of the Generalized Calibration System (GCS). GCS, an institutional software tool in the FDD, automates the computation of the expected attitude determination uncertainty that a spacecraft will encounter during its mission. The GRO project is particularly interested in the uncertainty in the attitude determination using Sun sensors and a magnetometer when both star trackers are inoperable. In order to examine the expected attitude errors for GRO, a systematic approach was developed including various parametric studies. The approach identifies pertinent parameters and combines them to form a matrix of test runs in GCS. This matrix formed the basis for this study.

  19. Development of miniaturised low cost attitude determination system for sounding rockets

    NASA Astrophysics Data System (ADS)

    Bekkeng, Jan Kenneth; Booij, Wilfred; Moen, J.

    2005-08-01

    Spacecraft attitude (orientation) information is needed in order to transform scientific vector measurements in the reference frame of the rocket into a more meaningful Earth-fixed reference frame. By fusing data from a 3-axial magnetometer, a sun sensor and three rate gyros the rockets attitude can be determined (reconstructed). Since the system does not need to determine the attitude in real time (the attitude data is not used to control the rocket orientation), all data from the attitude sensors can be transmitted back to ground, where they are fused to estimate an absolute orientation of the rocket. A prototype inertial measurement unit and a miniature high accuracy lens-less sun sensor for spinning rocket is under development. A test version of both instruments will be launched on a single stage Hotel Payload sounding rocket from Andøya Rocket Range in July 2005.

  20. Roundtable: Legal Abortion

    ERIC Educational Resources Information Center

    Guttmacher, Alan F.; And Others

    1971-01-01

    A roundtable discussion on legal abortion includes Dr. Alan F. Guttmacher, President of The Planned Parenthood Federation of America, Robert Hall, Associate Professor of Obstetrics and Gynecology at Columbia University College of Physicians and Surgeons, Christopher Tietze, a diretor of The Population Council, and Harriet Pilpel, a lawyer.…

  1. [Abortion and conscientious objection].

    PubMed

    Czarkowski, Marek

    2015-03-01

    Polish laws specify the parties responsible for lawful medical care in the availability of abortion differently than the Resolution of the Council of Europe. According to Polish regulations they include all Polish doctors while according to the Resolution, the state. Polish rules should not discriminate against anyone in connection with his religion or belief, even more so because the issue of abortion is an example of an unresolved ethical dispute. The number of lawful abortion in Poland does not exceed 1000 per year and can be carried out by only a few specialists contracted by the National Health Fund. Sufficient information and assistance should be provided to all pregnant women by the National Health Fund. The participation of all physicians in the informing process is not necessary, as evidenced by the lack of complaints to provide information on where in vitro fertilization treatment can be found - until recently only available when paid for by the individual and performed in much larger numbers than abortion. Entities performing this paid procedure made sure to provide information on their own. The rejection of the right to the conscientious objection clause by negating the right to refuse information may lead some to give up the profession or cause the termination of certain professionals on the basis of the professed worldview. Meanwhile, doctors are not allowed to be discriminated against on the basis of their conscience or religion.

  2. Abortion in Brazil: legislation, reality and options.

    PubMed

    Guedes, A C

    2000-11-01

    Abortion is illegal in Brazil except when performed to save the woman's life or in cases of rape. This paper gives a brief history of parliamentary and extra-parliamentary efforts to change abortion-related legislation in Brazil in the past 60 years, the contents of some of the 53 bills that have been tabled in that time, the non-governmental stakeholders involved and the debate itself in recent decades. The authorities in Brazil have never assumed full public responsibility for reproductive health care or family planning, let alone legal abortion; the ambivalence of the medical profession is an important obstacle. Most politicians avoid getting involved in the abortion debate, but the majority of bills in the 1990s have favoured less restrictive legislation. Incremental legislative and health service changes could help to improve the situation for women. Advocacy is probably the most important action, to promote an environment conducive to change. Clandestine abortion is a serious public health problem in Brazil, and the inadequacy of family planning services is one of the causes of this problem. The solutions should be made a priority for the Brazilian public health system.

  3. Observations on abortion in Zambia.

    PubMed

    Castle, M A; Likwa, R; Whittaker, M

    1990-01-01

    This report describes the findings of a preliminary investigation of women who sought treatment for abortion from the Gynecological Emergency Ward at the University Teaching Hospital (UTH) in Lusaka, Zambia. Barriers to obtaining legal abortions are identified and the harsh experiences of women seeking treatment for complications of illegally induced abortion are discussed. The data contribute to an understanding of the intensity of abortion for Zambian women and draw attention to the value of small-scale, qualitative research on women's reproductive health care needs. It is suggested that a study be planned at UTH to determine how health care delivery can be improved for women who seek abortion.

  4. Moral reasoning and political conflict: the abortion controversy.

    PubMed

    Kelley, J; Evans, M D; Headey, B

    1993-12-01

    We argue that the abortion controversy has one major source--religion--and two less important ones--attitudes towards sexual permissiveness and women's employment. Traditional Christianity promotes opposition to abortion using three distinct modes of moral reasoning: through deductive moral reasoning, by the Christian world view's implication that abortion violates the sanctity of life and is a rebellion against God's design; through authoritative moral reasoning by appeal to Catholic dogma; and through consequentialist moral reasoning, as a means of control over sexuality and as a means of confining women's activities to the home. Even aside from Christian belief, adherence to traditional morality promotes opposition to abortion on these consequentialist grounds. We posit a model in which religious belief, anti-feminism, sexual permissiveness, and attitudes towards abortion are distinct concepts (a four-factor model) rather than all simply aspects of a single conservatism factor. We develop reliable, multiple item attitude scales; show that our four-factor model fits the data much better than the one-factor alternative; and test our hypotheses on new data from a large, representative national sample of Australia (N = 4540). Using maximum likelihood structural equation methods, we find that deductive reasoning from Christian belief is the most important source of opposition to abortion, with strong effects both direct and indirect. Exposure to the authority of the Catholic hierarchy is a real but weaker source of opposition. Consequentialist reasoning from traditional moral views on sex--partly buttressed by religion, partly independent of it--is also influential. But views on women's employment matter only a little, contrary to received wisdom.

  5. Anti-abortion movement.

    PubMed

    Wilson, K

    1985-01-01

    At the same time that American women celebrate the freedoms won thus far for so many Americans, American women must realize they face some of the greatest threats to liberty in recent memory. To understand this movement against American women, it is necessary to first understand the roots of the historic movement for women's rights. Reproductive freedom for many years topped the agenda of the modern women's movement. At a time and in a land where rights were being enriched and liberty prized, choice took a prominent role, specifically, the right to abortion but also generally to repdocuctive freedom and the many underlying issues involved. This is why the various efforts to criminalize abortion effect every citizen, because they pose a serious threat to the constitutional rights of each individual. This is the intellectual view, or the "head" argument. The Constitution states that: "Congress shall make no laws respecting an establishment of religion, or prohibiting the free exercise thereof; the enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people; and no state shall make or enforce any laws which shall abridge the privileges or immunities of citizens of the US." Each of these clauses expresses the philosophy on which the Constitution was founded -- individual liberty. While there has been some legitimate disagreement over what constitutes an inalienable right, the concept is clear: the government should not become involved in personal philosophical or religious matters, except to permit the freedom of personal philosophical or religious expression. The anti-abortion contignent makes its case by claiming that a fertilized egg is a cona fide person and should, therefore, be guaranteed the Constitution's full roster of protections. In its landmark Roe v. Wade opinion, the Supreme Court held what pro-choice activities have been claiming for years. Since there is no empirical test by which measure

  6. Abortion (Amendment) Bill.

    PubMed

    Dundon, S

    1980-02-23

    Your editorial of Jan. 26 and the multi-signatory letter in your issue of Feb. 2 support the 1967 Abortion Act and suggest that Mr. Corrie's Bill is a retrograde step. The implication is that our professional knowledge should lead us to that conclusion. To take the opposite view risks being regarded as a member of a pressure group or a conscientious objector, but to remain silent might be construed as being in agreement. As I see it the great majority of people of varying ethnic groups, including those adhering to the Jewish, Muslim, and Christian faiths, subscribe to a behavioral code which regards human life as sacred: to take a life is to be countenanced only to save another. Abortion should be regarded as taking human life and morally wrong; making abortion legal does not make it morally right. Doctors are in a very difficult position, and cannot, no more than politicians can, make moral decisions for other people. Traditionally, however, the profession has a role in the responsibility for protection of life, and perhaps the public have a right to expect this protection. Human life begins at conception and some human rights begin at this time. Life (and its protection) seems to be a most basic right. The World Medical Association, in the Declaration of Oslo (1970), stated: "1. The first moral principle imposed upon the doctor is respect for human life as expressed in a clause of the Declaration of Geneva: 'I will maintain the utmost respect for human life from the time of conception.'" The 1967 Abortion Act did not result from a general referendum, much less a medical referendum. If the Corrie Bill is passed and abortions are cut by 2/3 as you suggest, this would, in my view, be a step, not back, but in the right direction.

  7. Abortion a business hurdle for nation's Catholic hospitals.

    PubMed

    Burda, D

    1989-08-25

    Abortion is the foremost moral issue for 626 Catholic hospitals nationwide since church teachings prohibit the performance of elective abortions. This and the fact that Catholic hospitals can not do voluntary sterilizations can hinder their ability to get managed care contracts. In some cases a hospital will not join a network because abortions and sterilizations are done in other hospitals in the network. In other cases they have been in plans where abortions are performed in other contract facilities; this does not violate the Catholic church policy since the abortions are not performed in their facility. When a Catholic and secular hospital plan a merger, Catholic ideals seem to take precedence. A Catholic hospital that went bankrupt in Philadelphia, was turned over to investors, and was under no obligation to follow the Catholic church's directives, but did not perform abortions anyway. In Washington state there are merger talks going on between a secular facility and the Franciscan Health System. The cessation of abortion and sterilization services appear to be outweighed by the financial benefits. Besides, these procedures can be performed through other providers in the area. In Michigan similar merger talks may fail because of the abortion issue. The government justice system is investigating and is likely to challenge any merger there.

  8. Abortion health services in Canada

    PubMed Central

    Norman, Wendy V.; Guilbert, Edith R.; Okpaleke, Christopher; Hayden, Althea S.; Steven Lichtenberg, E.; Paul, Maureen; White, Katharine O’Connell; Jones, Heidi E.

    2016-01-01

    Abstract Objective To determine the location of Canadian abortion services relative to where reproductive-age women reside, and the characteristics of abortion facilities and providers. Design An international survey was adapted for Canadian relevance. Public sources and professional networks were used to identify facilities. The bilingual survey was distributed by mail and e-mail from July to November 2013. Setting Canada. Participants A total of 94 abortion facilities were identified. Main outcome measures The number and location of services were compared with the distribution of reproductive-age women by location of residence. Results We identified 94 Canadian facilities providing abortion in 2012, with 48.9% in Quebec. The response rate was 83.0% (78 of 94). Facilities in every jurisdiction with services responded. In Quebec and British Columbia abortion services are nearly equally present in large urban centres and rural locations throughout the provinces; in other Canadian provinces services are chiefly located in large urban areas. No abortion services were identified in Prince Edward Island. Respondents reported provision of 75 650 abortions in 2012 (including 4.0% by medical abortion). Canadian facilities reported minimal or no harassment, in stark contrast to American facilities that responded to the same survey. Conclusion Access to abortion services varies by region across Canada. Services are not equitably distributed in relation to the regions where reproductive-age women reside. British Columbia and Quebec have demonstrated effective strategies to address disparities. Health policy and service improvements have the potential to address current abortion access inequity in Canada. These measures include improved access to mifepristone for medical abortion; provincial policies to support abortion services; routine abortion training within family medicine residency programs; and increasing the scope of practice for nurses and midwives to include abortion

  9. Medical Students and Abortion: Reconciling Personal Beliefs and Professional Roles at One Medical School.

    ERIC Educational Resources Information Center

    Dans, Peter E.

    1992-01-01

    Surveys of first- and fourth-year Johns Hopkins University (Maryland) medical students found little change in attitudes about abortion over four years. Attitudes correlated most strongly with personal beliefs about when a fetus is considered human life and somewhat with student gender. Results are used in a medical ethics course to illuminate…

  10. Vector Observation-Aided/Attitude-Rate Estimation Using Global Positioning System Signals

    NASA Technical Reports Server (NTRS)

    Oshman, Yaakov; Markley, F. Landis

    1997-01-01

    A sequential filtering algorithm is presented for attitude and attitude-rate estimation from Global Positioning System (GPS) differential carrier phase measurements. A third-order, minimal-parameter method for solving the attitude matrix kinematic equation is used to parameterize the filter's state, which renders the resulting estimator computationally efficient. Borrowing from tracking theory concepts, the angular acceleration is modeled as an exponentially autocorrelated stochastic process, thus avoiding the use of the uncertain spacecraft dynamic model. The new formulation facilitates the use of aiding vector observations in a unified filtering algorithm, which can enhance the method's robustness and accuracy. Numerical examples are used to demonstrate the performance of the method.

  11. A new model for yaw attitude of Global Positioning System satellites

    NASA Technical Reports Server (NTRS)

    Bar-Sever, Y. E.

    1995-01-01

    Proper modeling of the Global Positioning System (GPS) satellite yaw attitude is important in high-precision applications. A new model for the GPS satellite yaw attitude is introduced that constitutes a significant improvement over the previously available model in terms of efficiency, flexibility, and portability. The model is described in detail, and implementation issues, including the proper estimation strategy, are addressed. The performance of the new model is analyzed, and an error budget is presented. This is the first self-contained description of the GPS yaw attitude model.

  12. [Acute complications of abortion].

    PubMed

    Obel, E

    1976-02-01

    The complications accompanying the various methods of abortion as studied in different surveys are reported. In studies of dilation and curettage (D and C) and vaccuum aspiration (VA), lethality ranges from .5 to 2.9 deaths/100,000 cases. Metrorrhagia occurred in 2.5-6% of the D and C cases studied and in 2.9-3.5% of the VA cases. The bleeding was accompanied by infection in most cases where abortive tissue remained in the uterus, which occured in .4-.8% of the D and C cases and in .6-.9% of the VA cases studied. Postabortive bleeding occurred through the 10th day in up to 25% of the patients and was related to the length of the gestation period before abortion. Pelvic infection, mostly of the endometrium, occurred in about 1.4% of the D and C patients and in .3-1.2% of the VA patients. 1.4% of the D and C patients and .6% of the VA patients experienced a rise in body temperature as the only complication of abortion. Perforation of the uterus occurred in about .8% of the D and C patients and in .1-.6% of VA patients. Lesions of the cervix had to be sutured in .1% of the D and C group and .3% of the VA group. Saline instillation, used for abortions in the second trimest er, had a mortality rate of about 20/100,000 cases. Since the success rate of saline instillation is 90-98%, complications are more frequent, often requiring treatment with oxytocin or curettage. Extensive bleeding occurred in 2.3-4%. Curettage of the placenta was required in about 2.1-16.9% of the cases. Pelvic inflammation occurred in about 2.5% and temperature elevation in 1-3.4%. Abdominal hysterotomies had a lethality of 208/100,000. Pelvic hemorrhage occurred in 31%, inflammation in 4.7%, temperature elevation in 13%, and febrile reactions in 31% of the abdominal hysterotomies studied. It is necessary to establish international definitions of abortion complications for better documentation, and postoperative observations should be recorded more conscientiously. PMID:1251502

  13. Design and simulation of satellite attitude control system based on Simulink and VR

    NASA Astrophysics Data System (ADS)

    Zhang, Yang; Gan, Qingbo; Kang, Jingshu

    2016-01-01

    In order to research satellite attitude control system design and visual simulation, the simulation framework of satellite dynamics and attitude control using Simulink were established. The design of satellite earth-oriented control system based on quaternion feedback was completed. The 3D scene based on VR was created and models in the scene were driven by simulation data of Simulink. By coordinate transformation. successful observing the scene in inertial coordinate system, orbit coordinate system and body coordinate system. The result shows that application of simulation method of Simulink combined with VR in the design of satellite attitude control system field, has the advantages of high confidence level, hard real-time property, multi-perspective and multi-coordinate system observing the scene, and improves the comprehensibility and accuracy of the design.

  14. Abortion research in Latin America.

    PubMed

    Gaslonde Sainz, S

    1976-08-01

    Surveys dealing with abortion in Latin America have provided useful information despite problems in the collection and use of the data. Considerations that should be taken into account in designing abortion surveys and using the resultant information have been discussed here. Special attention has been paid to the need for a broad definition of "abortion" in order to overcome difficulties in gathering information about abortion in Latin America. Surveys have shown increasing incidence of abortion throughout Latin America in the recent past. In examining changes over time it is crucial to interpret clearly and carefully the summary measures of proportion of pregnancies ending in abortion and abortion rates per 1,000 women. It is also important to realize that the level and direction of change of the abortion rate depends on both the rate at which women are becoming pregnant and the proportion of pregnancies ending in abortion. Better survey design and techniques and more careful use of the resulting information will aid in the planning and evaluation of programs aimed at reducing abortion in Latin America. PMID:960180

  15. Abortion: taking the debate seriously.

    PubMed

    Kottow Lang, Miguel Hugo

    2015-05-19

    Voluntarily induced abortion has been under permanent dispute and legal regulations, because societies invariably condemn extramarital pregnancies. In recent decades, a measure of societal tolerance has led to decriminalize and legalize abortion in accordance with one of two models: a more restricted and conservative model known as therapeutic abortion, and the model that accepts voluntary abortion within the first trimester of pregnancy. Liberalization of abortion aims at ending clandestine abortions and decriminalizes the practice in order to increase reproductive education and accessibility of contraceptive methods, dissuade women from interrupting their pregnancy and, ultimately, make abortion a medically safe procedure within the boundaries of the law, inspired by efforts to reduce the incidence of this practice. The current legal initiative to decriminalize abortion in Chile proposes a notably rigid set of indications which would not resolve the three main objectives that need to be considered: 1) Establish the legal framework of abortion; 2) Contribute to reduce social unrest; 3) Solve the public health issue of clandestine, illegal abortions. Debate must urgently be opened to include alternatives in line with the general tendency to respect women's decision within the first trimester of pregnancy.

  16. The Politicization of Abortion and the Evolution of Abortion Counseling

    PubMed Central

    2013-01-01

    The field of abortion counseling originated in the abortion rights movement of the 1970s. During its evolution to the present day, it has faced significant challenges, primarily arising from the increasing politicization and stigmatization of abortion since legalization. Abortion counseling has been affected not only by the imposition of antiabortion statutes, but also by the changing needs of patients who have come of age in a very different era than when this occupation was first developed. One major innovation—head and heart counseling—departs in significant ways from previous conventions of the field and illustrates the complex and changing political meanings of abortion and therefore the challenges to abortion providers in the years following Roe v Wade. PMID:23153144

  17. Late abortion meeting, Paris / France.

    PubMed

    Spinelli, A

    1989-01-01

    On January 27 and 28, 1989 a workshop and a meeting were organized in Paris by Mouvement Francais pour le Planning Familial (MFPF/France) and the IPPF Europe Region. The workshop was held on the first day. 24 staff and volunteers from Planned Parenthood Associations of 15 countries attended, reviewing abortion laws, the definition of therapeutic abortion, and the incidence and problems of second trimester abortion. Second trimester abortion is available in only a few European countries. Second trimester abortions are rare in France (about 2000 per annum), and in 1986 1717 French women travelled to England in order to seek an abortion. All late abortions are performed for serious reasons. Older women may mistake signs of pregnancy for the onset of the menopause; and women fearful of social or familial punishment, especially teenagers, may be reluctant to consult a doctor. The experiences of Denmark and Sweden, where the problem is partially solved, suggest some strategies: optimize accessibility of contraceptive services, particularly for women at higher risk of late abortion; diminish the taboo surrounding abortion, so that women are less frightened to seek help at an early stage of pregnancy; make abortion services available in all regions of the country; avert time-consuming enforced waiting periods or consent for minors; and stimulate public information campaigns on the importance of seeking help early. On January 28 a meeting involving about 200 participants took place at the Universite Paris Dauphine, Salle Raymond Aron. Speakers at the meeting discussed the issue of late abortion in Europe, the difficulties of obtaining late abortions, counseling, medical problems, the woman's point of view, and possible solutions. At the close of the meeting, the MFPF called on the French government to modify some of the articles in the Penal Code that restrict women's access to safe and legal abortion.

  18. Austerity and Abortion in the European Union

    PubMed Central

    Reeves, Aaron; Billari, Francesco; McKee, Martin; Stuckler, David

    2016-01-01

    Economic hardship accompanying large recessions can lead families to terminate unplanned pregnancies. To assess whether abortions have risen during the recession, we collected crude abortion data from 2000 to 2012 from Eurostat for countries that had legal abortions and complete data. Declining trends in abortion ratios between 2000 and 2009 have been reversing. Excess abortions between 2010 and 2012 totaled 10.6 abortions per 1000 pregnancies ending in abortion or birth or 6701 additional abortions (95% CI 1190–9240) with stronger effects in younger ages. Economic shocks may increase recourse to abortion. Further research should explore causal pathways and protective factors. PMID:27009038

  19. [Chemical methods of abortion].

    PubMed

    Schmidt-Matthiesen, H

    1979-07-20

    Medicaments are used to prepare for instrument abortions in the 1st trimester and as inducers of abortion in the 2nd trimester. The effects, side effects, and dangers depend on the substances used and the route of application, which can be vaginal, cervical, injection, instillation, extraamniotic, intraamniotic, intravenous, or intramuscular. In the past, intraamniotic instillation of a 20% salt solution was the most common 2nd trimester method in Japan, the US, and Eastern Europe, giving a success rate of 90%. Serious side effects prompted substitution of extraamniotic instillation, which rarely produces serious side effects. Instillation of a 60% urea solution into the amniotic fluid in combination with oxytocin or prostaglandin produces an abortion in 13-21 hours, with a failure rate of 3% and a frequency of cervical laceration of under 1%. Extraamniotic use of a .1% solution of rivanol yields a success rate of about 85%, with a relatively long average time to explusion of 24-41 hours. In case of failure the procedure can be repeated. The advantage of the Rivanol method is the rarity of infectious complications. Alcohol is not used as a human abortifacient because it produces necrosis in the decidua and placenta. Prostaglandins are used in most 2nd trimester abortions. Research is underway to identify derivatives that will have an extended uterine impact without serious side effects. Different routes of administration have different effectiveness rates and dangers. All prostaglandins cause side effects including pain during uterine contractions, gastro-intestinal reactions, nausea, vomiting, fever, and headaches. Specific preparations are associated with other effects, some of them life-threatening. Emergency treatment should be available when these substances are used. Adjuvant measures may be employed before adminstration of an abortifacient agent to soften the cervix, or after administration to hasten the procedure. The choice of procedure depends upon the

  20. The Relationship between Justice and Attitudes: An Examination of Justice Effects on Event and System-Related Attitudes

    ERIC Educational Resources Information Center

    Ambrose, Maureen; Hess, Ronald L.; Ganesan, Shankar

    2007-01-01

    Research in organizational justice has always been interested in the relationship between justice and attitudes. This research often examines how different types of justice affect different attitudes, with distributive justice predicted to affect attitudes about specific events (e.g., performance evaluation) and procedural justice predicted to…

  1. Comparison of Two Recent Launch Abort Platforms

    NASA Technical Reports Server (NTRS)

    Dittemore, Gary D.; Harding, Adam

    2011-01-01

    The development of new and safer manned space vehicles is a top priority at NASA. Recently two different approaches of how to accomplish this mission of keeping astronauts safe was successfully demonstrated. With work already underway on an Apollo-like launch abort system for the Orion Crew Exploration Vehicle (CEV), an alternative design concept named the Max Launch Abort System, or MLAS, was developed as a parallel effort. The Orion system, managed by the Constellation office, is based on the design of a single solid launch abort motor in a tower positioned above the capsule. The MLAS design takes a different approach placing the solid launch abort motor underneath the capsule. This effort was led by the NASA Engineering and Safety Center (NESC). Both escape systems were designed with the Ares I Rocket as the launch vehicle and had the same primary requirement to safely propel a crew module away from any emergency event either on the launch pad or during accent. Beyond these two parameters, there was little else in common between the two projects, except that they both concluded in successful launches that will further promote the development of crew launch abort systems. A comparison of these projects from the standpoint of technical requirements; program management and flight test objectives will be done to highlight the synergistic lessons learned by two engineers who worked on each program. This comparison will demonstrate how the scope of the project architecture and management involvement in innovation should be tailored to meet the specific needs of the system under development.

  2. Minimizing attitude control fuel in space manipulator systems

    NASA Technical Reports Server (NTRS)

    Dubowsky, Steven; Torres, Miguel A.

    1990-01-01

    Techniques are presented for finding space manipulator motions which result in reduced spacecraft dynamic disturbances. Although a spacecraft's attitude control reaction jets can compensate for these disturbances, reaction jet fuel is a limited resource and excessive disturbances would limit the life of a space manipulator. A graphical tool called the Enhanced Disturbance Map (EDM) is presented and is demonstrated as an aid in developing planning and control algorithms to solve this complex problem.

  3. Abortion for fetal abnormality.

    PubMed

    Maclean, N E

    1979-07-25

    I wish to thank Dr. Pauline Bennett for her reply (NZ Med J, 13 June). She has demonstrated well that in dealing with sensitive difficult issues such as abortion for fetal abnormality, the one thing the doctor is not recommended to do is to speak the truth] I am prompted to write this letter for 2 reasons. Firstly, the excellent letter written by Dr. A. M. Rutherford (NZ Med J, 13 June) on the subject of abortion stated, "The most disturbing feature about the whole controversy is the 'blunting of our conscience'." When the doctors are not encouraged to be honest with patients then indeed our conscience has been blunted. Secondly, I watched Holocaust last night, and cannot refrain from stating that I see frightening parallels between our liberal abortion policy and the activities of the Nazis. As I watched the "mental patients" being herded into the shed for gassing by the polite, tidy, white coated medical staff, and then heard the compassionate, sensitive, letter of the hospital authorities to the relatives of the deceased, the parallel became obvious. The mental patients were weak, defenseless, burdensome, and uneconomic; the unborn are weak, defenseless, burdensome, and uneconomic. The hospital authority's letter was acceptable in many ways, acceptable except that its words bore no relation to the truth. It is said that the "first casualty of war is the truth". Whether that war involves the Jews, or the insane, or the unborn, the statement would seem correct.

  4. Public funding of abortions and abortion counseling for poor women.

    PubMed

    Edwards, R B

    1997-01-01

    This essay seeks to reveal the weakness in arguments against public funding of abortions and abortion counseling in the US based on economic, ethico-religious, anti-racist, and logical-consistency objections and to show that public funding of abortion is strongly supported by appeals to basic human rights, to freedom of speech, to informed consent, to protection from great harm, to justice, and to equal protection under the law. The first part of the article presents the case against public funding with detailed considerations of the economic argument, the ethico/religious argument, the argument that such funding supports racist genocide or eugenic quality control, and arguments that a logical inconsistency exists between the principles used to justify the legalization of abortions and arguments for public funding. The second part of the article presents the case for public funding by discussing the spending of public funds on morally offensive programs, arguments for public funding of abortion counseling for the poor, and arguments for public funding of abortions for the poor. It is concluded that it is morally unacceptable and rationally unjustifiable to refuse to expend public funds for abortions for low income women, because after all most money for legal abortions for the poor comes from welfare payments made to women. If conservative forces want to insure that no public funds pay for abortions, they must stop all welfare payments to pregnant women. PMID:12348330

  5. Abortion law reform in Nepal.

    PubMed

    Upreti, Melissa

    2014-08-01

    Across four decades of political and social action, Nepal changed from a country strongly enforcing oppressive abortion restrictions, causing many poor women's long imprisonment and high rates of abortion-related maternal mortality, into a modern democracy with a liberal abortion law. The medical and public health communities supported women's rights activists in invoking legal principles of equality and non-discrimination as a basis for change. Legislative reform of the criminal ban in 2002 and the adoption of an Interim Constitution recognizing women's reproductive rights as fundamental rights in 2007 inspired the Supreme Court in 2009 to rule that denial of women's access to abortion services because of poverty violated their constitutional rights. The government must now provide services under criteria for access without charge, and services must be decentralized to promote equitable access. A strong legal foundation now exists for progress in social justice to broaden abortion access and reduce abortion stigma. PMID:24890742

  6. Overview of the Miniature Sensor Technology Integration (MSTI) spacecraft attitude control system

    NASA Technical Reports Server (NTRS)

    Mcewen, Rob

    1994-01-01

    Msti2 is a small, 164 kg (362 lb), 3-axis stabilized, low-Earth-orbiting satellite whose mission is missile booster tracking. The spacecraft is actuated by 3 reaction wheels and 12 hot gas thrusters. It carries enough fuel for a projected life of 6 months. The sensor complement consists of a Horizon Sensor, a Sun Sensor, low-rate gyros, and a high rate gyro for despin. The total pointing control error allocation is 6 mRad (.34 Deg), and this is while tracking a target on the Earth's surface. This paper describes the Attitude Control System (ACS) algorithms which include the following: attitude acquisition (despin, Sun and Earth acquisition), attitude determination, attitude control, and linear stability analysis.

  7. Dworkin and Casey on abortion.

    PubMed

    Stroud, Sarah

    1996-01-01

    This article responds to two important recent treatments of abortion rights. I will mainly discuss Ronald Dworkin's recent writings concerning abortion: his article "Unenumerated rights: whether and how Roe should be overruled," and his book Life's Dominion. In these writings Dworkin presents a novel view of what the constitutional and moral argument surronding abortion is really about. Both debates actually turn, he argues, on the question of how to interpret the widely shared idea that human life is sacred. At the heart of the abortion debate is the essentially religious notion that human life has value which transcends its value to any particular person; abortion is therefore at bottom a religious issue. Dworkin hopes to use this analysis to show that the religion clauses of the First Amendment provide a "textual home" for a woman's right to choose abortion. I wish to scrutinize this suggestion here; I want to probe the precise consequences for abortion rights of such an understanding of their basis. I will argue that the consequences are more radical than Dworkin seems to realize. The other work I will examine here is the important 1992 Supreme Court decision on abortion, Planned Parenthood v. Casey. The controlling opinion in that case, written jointly by Justices Kennedy, O'Connor, and Souter, strongly reaffirmed Roe v. Wade, but also upheld most of the provisions of a Pennsylvania statute that had mandated various restrictions on abortion. The justices' basis for upholding these restictions was their introduction of a new constitutional standard for abortion regulations, an apparently weaker standard than those that had governed previous Supreme Court abortion decisions. I think there is a flaw in Casey's new constitutional test for abortion regulations, and I will explain, when we turn to Casey, what it is and why it bears a close relation to Dworkin's reluctance to carry his argument as far as it seems to go.

  8. Abortion in a just society.

    PubMed

    Hunt, M E

    1993-01-01

    A female Catholic theologian imagines a just society that does not judge women who decide to undergo an abortion. The Church, practitioners, and the courts must trust that women do make person-enhancing choices about the quality of life. In the last 15 years most progress in securing a woman's right to abortion has been limited to white, well-educated, and middle or upper middle class women. A just society would consider reproductive options a human right. Abortion providers are examples of a move to a just society; they are committed to women's well-being. There are some facts that make one pessimistic about achieving abortion in a just society. The US Supreme Court plans to review important decisions establishing abortion as a civil right. Further, some men insist on suing women who want to make their own reproductive decisions--an anti-choice tactic to wear away women's right to reproductive choice. Bombings of abortion clinics and harassment campaigns by anti-choice groups are common. These behaviors strain pro-choice proponents emotionally, psychically, and spiritually. Their tactics often lead to theologians practicing self-censorship because they fear backlash. Abortion providers also do this. Further, the reaction to AIDS is that sex is bad. Anti-abortion groups use AIDS to further their campaigns, claiming that AIDS is a punishment for sex. Strategies working towards abortion in a just society should be education and persuasion of policymakers and citizens about women's right to choose, since they are the ones most affected by abortion. Moreover, only women can secure their rights to abortion. In a just society, every health maintenance organization, insurance company, and group practice would consider abortion a normal service. A just society provides for the survival needs of the most marginalized.

  9. Anti-abortion movement.

    PubMed

    Wilson, K

    1985-01-01

    At the same time that American women celebrate the freedoms won thus far for so many Americans, American women must realize they face some of the greatest threats to liberty in recent memory. To understand this movement against American women, it is necessary to first understand the roots of the historic movement for women's rights. Reproductive freedom for many years topped the agenda of the modern women's movement. At a time and in a land where rights were being enriched and liberty prized, choice took a prominent role, specifically, the right to abortion but also generally to repdocuctive freedom and the many underlying issues involved. This is why the various efforts to criminalize abortion effect every citizen, because they pose a serious threat to the constitutional rights of each individual. This is the intellectual view, or the "head" argument. The Constitution states that: "Congress shall make no laws respecting an establishment of religion, or prohibiting the free exercise thereof; the enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people; and no state shall make or enforce any laws which shall abridge the privileges or immunities of citizens of the US." Each of these clauses expresses the philosophy on which the Constitution was founded -- individual liberty. While there has been some legitimate disagreement over what constitutes an inalienable right, the concept is clear: the government should not become involved in personal philosophical or religious matters, except to permit the freedom of personal philosophical or religious expression. The anti-abortion contignent makes its case by claiming that a fertilized egg is a cona fide person and should, therefore, be guaranteed the Constitution's full roster of protections. In its landmark Roe v. Wade opinion, the Supreme Court held what pro-choice activities have been claiming for years. Since there is no empirical test by which measure

  10. Analysis of beam loss induced abort kicker instability

    SciTech Connect

    Zhang W.; Sandberg, J.; Ahrens, L.; Fischer, W.; Hahn, H.; Mi, J.; Pai, C.; Tan, Y.

    2012-05-20

    Through more than a decade of operation, we have noticed the phenomena of beam loss induced kicker instability in the RHIC beam abort systems. In this study, we analyze the short term beam loss before abort kicker pre-fire events and operation conditions before capacitor failures. Beam loss has caused capacitor failures and elevated radiation level concentrated at failed end of capacitor has been observed. We are interested in beam loss induced radiation and heat dissipation in large oil filled capacitors and beam triggered thyratron conduction. We hope the analysis result would lead to better protection of the abort systems and improved stability of the RHIC operation.

  11. The abortion struggle in America.

    PubMed

    Warren, Mary Anne

    1989-10-01

    The U.S. Supreme Court's July 1989 decision in Webster v. Reproductive Health Services, while not overturning Roe v. Wade, extended the power of state and local governments to regulate abortion. Warren situates the Webster decision in a larger context of 19th and 20th century American anti-abortion legislation, the Court's 1973 Roe decision and its predecessors, and the anti-abortion campaign that followed Roe. She then discusses Webster and its legal, practical, and political implications, concluding that the future of legal abortion in the United States is radically uncertain.

  12. God's bullies: attacks on abortion.

    PubMed

    Hadley, J

    1994-01-01

    National politics in the US, Poland, and Ireland have in recent years been afire with debate over abortion. Conflicting abortion laws almost scuttled the reunification of Germany. This paper describes how the abortion debate took hold in post-Communist Poland and how the issue came to be so entrenched in US politics in the wake of the US Supreme Court's 1973 decision on abortion in the case of Roe vs. Wade. It focuses upon abortion mainly as a method of birth control which women have always sought when needed regardless of the procedure's legal status. The controversies and campaigns recorded and the ideas offered focus upon women's access to affordable, safe, and legal abortion. The author argues that Poland is no place to be a woman and presents sections on the country's church, government, and medical profession; Roe vs. Wade; who opposes abortion rights and their broad success; the 1992 US presidential election; Bill Clinton's presidency; why the abortion debate has been different in Britain; and new issues on abortion.

  13. Prophylactic antibiotics for curettage abortion.

    PubMed

    Grimes, D A; Schulz, K F; Cates, W

    1984-11-15

    Opinion is divided as to the advisability of routine use of prophylactic antibiotics for curettage abortion. Six studies, including three randomized clinical trials, suggest that prophylaxis reduces infectious morbidity associated with curettage abortions by about one half. Three other studies, two involving prophylaxis for instillation abortions and one involving a vaginal antiseptic for curettage abortion, support the hypothesis that antimicrobial prophylaxis reduces morbidity. Tetracyclines are commonly used for this purpose. The cost of routine prophylaxis even with an expensive tetracycline would appear to be offset by the savings in direct and indirect costs. Prophylaxis may help prevent both short-term morbidity and potential late sequelae, such as ectopic pregnancy and infertility.

  14. Controversy over abortion funding increases.

    PubMed

    1980-03-01

    The controversy surrounding the question of public financing of Medicaid abortions in the U.S. was fanned through 5 separate court decisions in January 1980. In 3 of the decisions--directed against the Connecticut, Minnesota, and Missouri Medicaid abortion programs--the courts invalidated the state laws on the grounds that they limited federal funding of abortions for poor women too narrowly. Another decision stated that the Missouri law violated the equal protection clause of th Constitution. A decision in the U.S. District Court in Brooklyn, New York, stated that the 1976 Hyde amendment's restrictions on federal payment for abortions under Medicaid are unconstitutional. Each case is briefly analyzed.

  15. The history of abortion-related acts and current issues in Japan.

    PubMed

    Miyazaki, Michiko

    2007-12-01

    In Japan abortion is categorized into two types by law; one is illegal feticide and the other is legal abortion. The present criminal law forbids feticide in principle and the life of a fetus is protected. However, abortion can be practiced under the "Eugenic Protection Act" established in 1948 (currently referred to as the "Maternal Protection Act"), and is readily available in Japan. In this paper, I have traced the historical origins of abortion law and attempted to clarify the problems related to the current laws relating to artificial abortion. As a result, the existence of contradictions between attitudes toward the life of the fetus and that of the mother, women's right to self determination, and women's rights under current legislation has been clarified. PMID:18284118

  16. The method of testing of the attitude reference systems with optoelectronic sensors

    NASA Astrophysics Data System (ADS)

    Szelmanowski, Andrzej; Michalak, Slawomir

    2003-09-01

    What the paper deals with is the method of testing of the attitude reference systems with the coning excitation/motion applied. A theoretical description of the excitation at issue has been given and followed with a comparative analysis of the excitation generated in the UPG-48 station with a tilting platform. Experimental data of testing of the attitude and heading reference system AHRS LCR-92 system for the non-holonomical excitation/motion have been compared with results effected by some simulation-based tests of numerical models of the attitude and heading reference systems with the optoelectronic sensors. On the grounds of some numerical-simulation-effected findings gained with the AutoCAD packet, a concept of a coning-excitation-generating measuring station has been developed at the Air Force Institute of Technology and presented in this paper.

  17. Foetus or child? Abortion discourse and attributions of humanness.

    PubMed

    Mikołajczak, Małgorzata; Bilewicz, Michał

    2015-09-01

    Due to moral, religious, and cultural sensibilities, the topic of abortion still gives rise to controversy. The ongoing public debate has become visibly polarized with the usage of the pro-life versus pro-choice rhetoric. The aim of the current research was to investigate whether the language used in abortion discourse can affect people's attitudes by changing their attributions of humanity to unborn. Across three experimental studies we showed that participants who read about a 'foetus', compared to a 'child' declared higher support for elective abortion (Study 1; N = 108), this effect can be explained by greater humanness, as reflected in human nature traits, attributed to the child (vs. the foetus; Study 2; N = 121). The effect is mediated uniquely by attribution of human nature, but not by human uniqueness traits (Study 3; N = 120). These findings serve as a starting point for discussion of the role of language in shaping attitudes on abortion and other morally ambiguous issues. PMID:25418861

  18. Foetus or child? Abortion discourse and attributions of humanness.

    PubMed

    Mikołajczak, Małgorzata; Bilewicz, Michał

    2015-09-01

    Due to moral, religious, and cultural sensibilities, the topic of abortion still gives rise to controversy. The ongoing public debate has become visibly polarized with the usage of the pro-life versus pro-choice rhetoric. The aim of the current research was to investigate whether the language used in abortion discourse can affect people's attitudes by changing their attributions of humanity to unborn. Across three experimental studies we showed that participants who read about a 'foetus', compared to a 'child' declared higher support for elective abortion (Study 1; N = 108), this effect can be explained by greater humanness, as reflected in human nature traits, attributed to the child (vs. the foetus; Study 2; N = 121). The effect is mediated uniquely by attribution of human nature, but not by human uniqueness traits (Study 3; N = 120). These findings serve as a starting point for discussion of the role of language in shaping attitudes on abortion and other morally ambiguous issues.

  19. Contraception and abortion: Fruits of the same rotten tree?

    PubMed Central

    Newton, William

    2015-01-01

    This article seeks to show how contraception, when generally accepted in a society, helps to bring about a radical change in social perceptions of sexual intercourse, human life, the human person, science, and morality in general. On account of this, contraception helps to ingrain abortion and other anti-life practices into the culture that accepts it and, therefore, in no sense can be considered as a panacea for abortion. Particular attention is given to the thought of John Paul II on this matter who noted that “despite their differences of nature and moral gravity, contraception and abortion are often closely connected, as fruits of the same tree” (Evangelium vitae, n. 13). Lay summary: The article considers the connection between contraception and abortion and defends Pope John Paul II's claim that “despite their differences of nature and moral gravity, contraception and abortion are often closely connected, as fruits of the same tree.” The thesis is that contraception is a “game-changer” in the sense that it changes the way we think about some very fundamental realities such as attitudes to sex, to life, to science, to the human person, and to morality. Any one of these changes would have a significant impact on a society in terms of promoting a culture of death: together they are devastating. PMID:25999612

  20. Contraception and abortion: Fruits of the same rotten tree?

    PubMed

    Newton, William

    2015-05-01

    This article seeks to show how contraception, when generally accepted in a society, helps to bring about a radical change in social perceptions of sexual intercourse, human life, the human person, science, and morality in general. On account of this, contraception helps to ingrain abortion and other anti-life practices into the culture that accepts it and, therefore, in no sense can be considered as a panacea for abortion. Particular attention is given to the thought of John Paul II on this matter who noted that "despite their differences of nature and moral gravity, contraception and abortion are often closely connected, as fruits of the same tree" (Evangelium vitae, n. 13). Lay summary: The article considers the connection between contraception and abortion and defends Pope John Paul II's claim that "despite their differences of nature and moral gravity, contraception and abortion are often closely connected, as fruits of the same tree." The thesis is that contraception is a "game-changer" in the sense that it changes the way we think about some very fundamental realities such as attitudes to sex, to life, to science, to the human person, and to morality. Any one of these changes would have a significant impact on a society in terms of promoting a culture of death: together they are devastating.

  1. Considerations in Launch Vehicle Abort Capability and Failure Tolerance

    NASA Astrophysics Data System (ADS)

    Hale, N. W., Jr.; Conte, B. A.

    2002-01-01

    operations, the Space Shuttle was designed to incur loss of thrust from one engine at liftoff and return safely to a runway. This is a very unusual capability in space launch vehicles and, if desired, must be designed into the system initially. For some extremely high value payloads on future expendable launch vehicles, this capability may be cost effective as well as for human space flights. Current designers may be inclined to design a "simple" emergency escape pod to resolve this issue. That may neither be the most effective nor the safest way to provide ascent failure tolerance. This paper discusses some real-world issues associated with this capability that the designers of the Space Shuttle did take into account that have become serious issues in real operations. paper discusses the affect of payload mass on abort capability. Issues related to abort modes can also be influence by other aspects of payload mass including center of gravity concerns. In a similar mode, consumables such as on-orbit attitude control propellant is a major factor in abort mode design. multiple engine failures during the powered ascent trajectory and have a happy outcome: landing on a runway. This paper discusses options and post-design fixes to the Space Shuttle to enhance multiple engine out capability. scenarios. include propellant underload on STS-61C, off nominal performance of engine clusters on STS-78 and STS-93, and other flights. Designers of these future human rated vehicles should consider the Space Shuttle experience in designing their systems. About the Authors: N. Wayne Hale, Jr. is currently the Deputy Chief for Shuttle of the NASA/JSC Flight Director Office. In 23 years with NASA at Houston's Johnson Space Center, he has served in the Mission Control Center for 41 Space Shuttle flights including 25 as Entry Flight Director. Mr. Hale received his Bachelor of Science Degree in Mechanical Engineering from Rice University in 1976 and his Master of Science Degree in

  2. "These things are dangerous": Understanding induced abortion trajectories in urban Zambia.

    PubMed

    Coast, Ernestina; Murray, Susan F

    2016-03-01

    Unsafe abortion is a significant but preventable cause of global maternal mortality and morbidity. Zambia has among the most liberal abortion laws in sub-Saharan Africa, however this alone does not guarantee access to safe abortion, and 30% of maternal mortality is attributable to unsafe procedures. Too little is known about the pathways women take to reach abortion services in such resource-poor settings, or what informs care-seeking behaviours, barriers and delays. In-depth qualitative interviews were conducted in 2013 with 112 women who accessed abortion-related care in a Lusaka tertiary government hospital at some point in their pathway. The sample included women seeking safe abortion and also those receiving hospital care following unsafe abortion. We identified a typology of three care-seeking trajectories that ended in the use of hospital services: clinical abortion induced in hospital; clinical abortion initiated elsewhere, with post-abortion care in hospital; and non-clinical abortion initiated elsewhere, with post-abortion care in hospital. Framework analyses of 70 transcripts showed that trajectories to a termination of an unwanted pregnancy can be complex and iterative. Individuals may navigate private and public formal healthcare systems and consult unqualified providers, often trying multiple strategies. We found four major influences on which trajectory a woman followed, as well as the complexity and timing of her trajectory: i) the advice of trusted others ii) perceptions of risk iii) delays in care-seeking and receipt of services and iv) economic cost. Even though abortion is legal in Zambia, girls and women still take significant risks to terminate unwanted pregnancies. Levels of awareness about the legality of abortion and its provision remain low even in urban Zambia, especially among adolescents. Unofficial payments required by some providers can be a major barrier to safe care. Timely access to safe abortion services depends on chance rather

  3. "These things are dangerous": Understanding induced abortion trajectories in urban Zambia.

    PubMed

    Coast, Ernestina; Murray, Susan F

    2016-03-01

    Unsafe abortion is a significant but preventable cause of global maternal mortality and morbidity. Zambia has among the most liberal abortion laws in sub-Saharan Africa, however this alone does not guarantee access to safe abortion, and 30% of maternal mortality is attributable to unsafe procedures. Too little is known about the pathways women take to reach abortion services in such resource-poor settings, or what informs care-seeking behaviours, barriers and delays. In-depth qualitative interviews were conducted in 2013 with 112 women who accessed abortion-related care in a Lusaka tertiary government hospital at some point in their pathway. The sample included women seeking safe abortion and also those receiving hospital care following unsafe abortion. We identified a typology of three care-seeking trajectories that ended in the use of hospital services: clinical abortion induced in hospital; clinical abortion initiated elsewhere, with post-abortion care in hospital; and non-clinical abortion initiated elsewhere, with post-abortion care in hospital. Framework analyses of 70 transcripts showed that trajectories to a termination of an unwanted pregnancy can be complex and iterative. Individuals may navigate private and public formal healthcare systems and consult unqualified providers, often trying multiple strategies. We found four major influences on which trajectory a woman followed, as well as the complexity and timing of her trajectory: i) the advice of trusted others ii) perceptions of risk iii) delays in care-seeking and receipt of services and iv) economic cost. Even though abortion is legal in Zambia, girls and women still take significant risks to terminate unwanted pregnancies. Levels of awareness about the legality of abortion and its provision remain low even in urban Zambia, especially among adolescents. Unofficial payments required by some providers can be a major barrier to safe care. Timely access to safe abortion services depends on chance rather

  4. System for star catalog equalization to enhance attitude determination

    NASA Technical Reports Server (NTRS)

    Liu, Yong (Inventor); Wu, Yeong-Wei Andy (Inventor); Li, Rongsheng (Inventor)

    2001-01-01

    An apparatus for star catalog equalization to enhance attitude determination includes a star tracker, a star catalog and a controller. The star tracker is used to sense the positions of stars and generate signals corresponding to the positions of the stars as seen in its field of view. The star catalog contains star location data that is stored using a primary and multiple secondary arrays sorted by both declination (DEC) and right ascension (RA), respectively. The star location data stored in the star catalog is predetermined by calculating a plurality of desired star locations, associating one of a plurality of stars with each of the plurality of desired star locations based upon a neighborhood association angle to generate an associated plurality of star locations: If an artificial star gap occurs during association, then the neighborhood association angle for reassociation is increased. The controller uses the star catalog to determine which stars to select to provide star measurement residuals for correcting gyroscope bias and spacecraft attitude.

  5. The medicolegal aspects of abortion.

    PubMed

    Hall, R E

    1972-01-01

    There was little demand for abortion in the 19th century. There was no population explosion and large families were needed to tend the farm. People were more religious; women were 2nd class citizens; and abortions in those days were medically unsafe. The movement to reform abortion laws in the United States stemmed largely from 3 events in the early 1960s: 1) the request in 1963 of Sherri Finkbine for an abortion after she had taken thalidomide and then learned of its teratogenic potential; 2) a rubella epidemic in 1964 and 1965; and 3) the 1965 Supreme Court decision declaring the Connecticut birth control law to be unconstitutional. In 1970 abortion was completely legalized in the states of Hawaii, Alaska, New York and Washington -- the first 3 by legislation and the last by popular referendum. With 4 states operating under repeal laws, 12 under reform laws, and 34 under restrictive laws, the current practice of abortion in the U.S. at this time is chaotic. In order to cope with the tremendous new demand for abortions, doctors have had to learn new techniques and hospitals have had to modify their procedures and adapt their facilities. An obstacle in the transition to universally available abortion has been the resistance of attending physicians, house staff, paramedical personnel, and hospital administrators and trustees. The legal future of abortion lies more in the courts than in the legislatures. With the impetus provided by the 4 new repeal laws, other states will now revise their abortion statutes at an accelerated pace, but it will not be possible to achieve universal repeal by this state-by-state route. Medical practitioners need to prepare for the eventuality of legalized abortion on a national scale.

  6. Contraception following abortion and the treatment of incomplete abortion.

    PubMed

    Gemzell-Danielsson, Kristina; Kopp Kallner, Helena; Faúndes, Anibal

    2014-07-01

    Family planning counseling and the provision of postabortion contraception should be an integrated part of abortion and postabortion care to help women avoid another unplanned pregnancy and a repeat abortion. Postabortion contraception is significantly more effective in preventing repeat unintended pregnancy and abortion when it is provided before women leave the healthcare facility where they received abortion care, and when the chosen method is a long-acting reversible contraceptive (LARC) method. This article provides evidence supporting these two critical aspects of postabortion contraception. It suggests that gynecologists and obstetricians have an ethical obligation to do everything necessary to ensure that postabortion contraception, with a focus on LARC methods, becomes an integral part of abortion and postabortion care, in line with the recommendations of the International Federation of Gynecology and Obstetrics and of several other organizations.

  7. Denial of abortion in legal settings

    PubMed Central

    Gerdts, Caitlin; DePiñeres, Teresa; Hajri, Selma; Harries, Jane; Hossain, Altaf; Puri, Mahesh; Vohra, Divya; Foster, Diana Greene

    2015-01-01

    Background Factors such as poverty, stigma, lack of knowledge about the legal status of abortion, and geographical distance from a provider may prevent women from accessing safe abortion services, even where abortion is legal. Data on the consequences of abortion denial outside of the US, however, are scarce. Methods In this article we present data from studies among women seeking legal abortion services in four countries (Colombia, Nepal, South Africa and Tunisia) to assess sociodemographic characteristics of legal abortion seekers, as well as the frequency and reasons that women are denied abortion care. Results The proportion of women denied abortion services and the reasons for which they were denied varied widely by country. In Colombia, 2% of women surveyed did not receive the abortions they were seeking; in South Africa, 45% of women did not receive abortions on the day they were seeking abortion services. In both Tunisia and Nepal, 26% of women were denied their wanted abortions. Conclusions The denial of legal abortion services may have serious consequences for women's health and wellbeing. Additional evidence on the risk factors for presenting later in pregnancy, predictors of seeking unsafe illegal abortion, and the health consequences of illegal abortion and childbirth after an unwanted pregnancy is needed. Such data would assist the development of programmes and policies aimed at increasing access to and utilisation of safe abortion services where abortion is legal, and harm reduction models for women who are unable to access legal abortion services. PMID:25511805

  8. Herbal infusions used for induced abortion.

    PubMed

    Ciganda, Carmen; Laborde, Amalia

    2003-01-01

    Plants and herbs have been used to induce abortions but there is very little published information describing the commonly used ones. The purpose of this report is to describe the herbal products used to induce abortions, and to enhance awareness and understanding of their toxic effects. A descriptive retrospective survey was conducted on the calls received by the Montevideo Poison Centre between 1986 and 1999 concerning the ingestion of herbal infusions with abortive intent. A total of 86 cases involving 30 different plant species were identified. The species most frequently involved were ruda (Ruta chalepensis/graveolens), cola de quirquincho (Lycopodium saururus), parsley (Petroselinum hortense), and an over-the-counter herbal product named Carachipita. The components of Carachipita are pennyroyal (Mentha pulegium), yerba de la perdiz (Margiricarpus pinnatus), oregano (Origanum vulgare), and guaycuri (Statice brasiliensis). Abortion occurred in 23 cases after the ingestion of parsley, ruda, Carachipita, celery, Cedron, francisco alvarez, floripon, espina colorada. Out of the 23 cases, 15 involved the only the ingestion of plants, 4 cases used injected drugs (presumably hormones), and in 4 cases there was associated self-inflicted instrumental manipulation. Multiple organ system failure occurred in those patients who had ingested ruda (alone or in combination with parsley or fennel), Carachipita, arnica, or bardana. Deaths occurred in one case of Carachipita ingestion and in 4 cases of ruda ingestion (2 cases of ruda alone, 2 cases of ruda with parsley and fennel). Self-inflicted instrumental manipulations were found in 4 of the patients with multiple organ system failure and in one of those who died. The results of this report are not conclusive, but it appears that the ingestion of plants to induce abortion involves the risk of severe morbidity and mortality.

  9. Attitudes to the Application of a Web-Based Learning System in a Microbiology Course

    ERIC Educational Resources Information Center

    Masiello, I.; Ramberg, R.; Lonka, K.

    2005-01-01

    Computer-based systems have great potential for delivering learning material. Here, a Web-based learning management system is employed by a medical university to support undergraduate courses. The objective was to help the university's staff to understand the readiness and attitudes of students to the use of information technology, their…

  10. Orion Pad Abort 1 GN and C Design and Development

    NASA Technical Reports Server (NTRS)

    Medina, Edgar A.; Stachowiak, Susan J.

    2010-01-01

    The first flight test of the Orion Abort Flight Test project is scheduled to launch in Spring 2010. This flight test is known as Pad Abort 1 (PA-1) and it is intended to accomplish a series of flight test objectives, including demonstrating the capability of the Launch Abort System (LAS) to propel the Crew Module (CM) to a safe distance from a launch vehicle during a pad abort. The PA-1 Flight Test Article (FTA) is actively controlled by a guidance, navigation, and control (GN&C) system for much of its flight. The purpose of this paper is to describe the design, development, and analysis of the PA-1 GN&C system. A description of the technical solutions that were developed to meet the challenge of satisfying many competing requirements is presented. A historical perspective of how the Orion LAV compares to the Apollo Launch Escape Vehicle (LEV) design will also be included.

  11. Abortion Information: A Guidance Viewpoint

    ERIC Educational Resources Information Center

    Wolleat, Patricia L.

    1975-01-01

    A number of questions relating to providing abortion information to teenagers can be raised from legal, ethical and philosophical standpoints. The purpose of this article is to examine abortion information-giving from the perspective of counseling and guidance theory and practice. (Author)

  12. Abortion, Birthright and the Counselor.

    ERIC Educational Resources Information Center

    Fadale, Vincent E.; And Others

    This transcript is the result of panel presentation given on the implications of liberalized abortion laws for counselors. A new law which went into effect in July, 1970, in New York State presented women with the option of obtaining a legal abortion up to the 24th week of pregnancy. Counselors in New York State were, therefore, presented with new…

  13. Advice in the Abortion Decision

    ERIC Educational Resources Information Center

    Luscutoff, Sidney A.; Elms, Alan C.

    1975-01-01

    Subjects in this study were asked to report the number of contacts-for-advice they had made when forming decisions to have a therapeutic abortion, or to carry a pregnancy to term. As predicted, the abortion group differed strongly from both other groups on most questions. (Author)

  14. Partner violence and abortion characteristics.

    PubMed

    Colarossi, Lisa; Dean, Gillian

    2014-01-01

    We conducted a retrospective cohort study using randomly selected medical charts of women reporting a history of partner violence and women with no history of partner violence at the time of a family planning or abortion appointment (n = 6,564 per group). We analyzed lifetime history of partner violence for odds of lifetime history of abortion and miscarriage number, and birth control problems. To more closely match timing, we analyzed a subsample of 2,186 women reporting current violence versus not at the time of an abortion appointment for differences in gestational age, medical versus surgical method choice, and return for follow-up visit. After adjusting for years at risk and demographic characteristics, women with a past history of partner violence were not more likely to have ever had one abortion, but they were more likely to have had problems with birth control, repeat abortions, and miscarriages than women with no history of violence. Women with current partner violence were also more likely to be receiving an abortion at a later gestational age. We found no differences between the groups in return for abortion follow-up visit or choice of surgical versus medication abortion. Findings support screening for the influence of partner violence on reproductive health and related safety planning. PMID:24580133

  15. Flight test evaluation of a separate surface attitude command control system on a Beech 99 airplane

    NASA Technical Reports Server (NTRS)

    Gee, S. W.; Jenks, G. E.; Roskam, J.; Stone, R. L.

    1976-01-01

    A joint NASA/university/industry program was conducted to flight evaluate a potentially low cost separate surface implementation of attitude command in a Beech 99 airplane. Saturation of the separate surfaces was the primary cause of many problems during development. Six experienced professional pilots made simulated instrument flight evaluations in light-to-moderate turbulence. They were favorably impressed with the system, particularly with the elimination of control force transients that accompanied configuration changes. For ride quality, quantitative data showed that the attitude command control system resulted in all cases of airplane motion being removed from the uncomfortable ride region.

  16. Evaluation of the Geomagnetic Field Models based on Magnetometer Measurements for Satellite's Attitude Determination System

    NASA Astrophysics Data System (ADS)

    Cilden, Demet; Kaymaz, Zerefsan; Hajiyev, Chingiz

    2016-07-01

    Magnetometers are common attitude determination sensors for small satellites at low Earth orbit; therefore, magnetic field model of the Earth is necessary to estimate the satellite's attitude angles. Difference in the components of the magnetic field vectors -mostly used as unit vector. Therefore the angle between them (model and measurement data) affects the estimation accuracy of the satellite's attitude. In this study, geomagnetic field models are compared with satellite magnetic field observations in order to evaluate the models using the magnetometer results with high accuracy. For attitude determination system, IGRF model is used in most of the cases but the difference between the sensor and model increases when the geomagnetic activity occurs. Hence, several models including the empirical ones using the external variations in the Earth's geomagnetic field resulting from the solar wind and interplanetary magnetic field are of great importance in determination of the satellite's attitude correctly. IGRF model describes the internal-part of the geomagnetic field, on the other hand candidate models to IGRF, such as recently developed POMME-6 model based on Champ data, CHAOS-5 (CHAmp, Oersted, Swarm), T89 (Tsyganenko's model), include simple parameterizations of external fields of magnetospheric sources in addition to the internal field especially for low Earth orbiting satellites. Those models can be evaluated to see noticeable difference on extraterrestrial field effects on satellite's attitude determination system changing with its height. The comparisons are made between the models and observations and between the models under various magnetospheric activities. In this study, we will present our preliminary results from the comparisons and discuss their implications from the satellite attitude perspective.

  17. Advanced application flight experiments precision attitude determination system. Volume 2: System tests

    NASA Technical Reports Server (NTRS)

    1976-01-01

    The performance capability of each of two precision attitude determination systems (PADS), one using a strapdown star tracker, and the other using a single-axis gimbal star tracker was measured in the laboratory under simulated orbit conditions. The primary focus of the evaluation was on the contribution to the total system accuracy by the star trackers, and the effectiveness of the software algorithms in functioning with actual sensor signals. A brief description of PADS, the laboratory test configuration and the test facility, is given along with a discussion of the data handling and display, laboratory computer programs, PADS performance evaluation programs, and the strapdown and gimbal system tests. Results are presented and discussed.

  18. Sexuality Attitudes of Black Adults.

    ERIC Educational Resources Information Center

    Timberlake, Constance A.; Carpenter, Wayne D.

    1990-01-01

    Assessed sexuality attitudes of black middle-class sample (N=124) concerning communication regarding sexuality information, adolescent contraception, adolescent pregnancy, nonmarital intercourse, responsibility for contraception and pregnancy, abortion, pornography, and masturbation. Results suggest that participants were well-informed, moderate,…

  19. Abortion: epidemiology, safety, and technique.

    PubMed

    Blumenthal, P D

    1992-08-01

    In 1991, the abortion literature was characterized by articles relating to 1) epidemiologic issues in abortion care, 2) advances in knowledge and experience with medical abortifacients such as mifepristone (RU 486), and 3) cervical ripening prior to abortion with the use of both mifepristone and prostaglandins. Technical methods of achieving termination of pregnancy continue to be similar in the United States, the United Kingdom, and Europe, although induction-abortion times are generally slower in Europe than in the United States. Surgically, dilatation and evacuation procedures continue to be more common in the United States than in other countries. The effectiveness of mifepristone is undisputed, and the recommended dose for early first-trimester termination is being compared with lower dose alternative regimens. There is additional evidence that at least in the short term, the negative psychological sequelae of abortion are infrequent and are inconsequential as a public health issue. PMID:1504270

  20. Birth, meaningful viability and abortion.

    PubMed

    Jensen, David

    2015-06-01

    What role does birth play in the debate about elective abortion? Does the wrongness of infanticide imply the wrongness of late-term abortion? In this paper, I argue that the same or similar factors that make birth morally significant with regard to abortion make meaningful viability morally significant due to the relatively arbitrary time of birth. I do this by considering the positions of Mary Anne Warren and José Luis Bermúdez who argue that birth is significant enough that the wrongness of infanticide does not imply the wrongness of late-term abortion. On the basis of the relatively arbitrary timing of birth, I argue that meaningful viability is the point at which elective abortion is prima facie morally wrong.

  1. [Induced abortion: a world perspective].

    PubMed

    Henshaw, S K

    1987-01-01

    This article presents current estimates of the number, rate, and proportion of abortions for all countries which make such data available. 76% of the world's population lives in countries where induced abortion is legal at least for health reasons. Abortion is legal in almost all developed countries. Most developing countries have some laws against abortion, but it is permitted at least for health reasons in the countries of 67% of the developing world's population. The other 33%--over 1 billion persons--reside mainly in subSaharan Africa, Latin America, and the most orthodox Muslim countries. By the beginning of the 20th century, abortion had been made illegal in most of the world, with rules in Africa, Asia, and Latin America similar to those in Europe and North America. Abortion legislation began to change first in a few industrialized countries prior to World War II and in Japan in 1948. Socialist European countries made abortion legal in the first trimester in the 1950s, and most of the industrialized world followed suit in the 1960s and 1970s. The worldwide trend toward relaxed abortion restrictions continues today, with governments giving varying reasons for the changes. Nearly 33 million legal abortions are estimated to be performed annually in the world, with 14 million of them in China and 11 million in the USSR. The estimated total rises to 40-60 million when illegal abortions added. On a worldwide basis some 37-55 abortions are estimated to occur for each 1000 women aged 15-44 years. There are probably 24-32 abortions per 100 pregnancies. The USSR has the highest abortion rate among developed countries, 181/1000 women aged 15-44, followed by Rumania with 91/1000, many of them illegal. The large number of abortions in some countries is due to scarcity of modern contraception. Among developing countries, China apparently has the highest rate, 62/1000 women aged 15-44. Cuba's rate is 59/1000. It is very difficult to calculate abortion rates in countries

  2. Design and Integration of an All-Magnetic Attitude Control System for FASTSAT-HSV01's Multiple Pointing Objectives

    NASA Technical Reports Server (NTRS)

    DeKock, Brandon; Sanders, Devon; Vanzwieten, Tannen; Capo-Lugo, Pedro

    2011-01-01

    The FASTSAT-HSV01 spacecraft is a microsatellite with magnetic torque rods as it sole attitude control actuator. FASTSAT s multiple payloads and mission functions require the Attitude Control System (ACS) to maintain Local Vertical Local Horizontal (LVLH)-referenced attitudes without spin-stabilization, while the pointing errors for some attitudes be significantly smaller than the previous best-demonstrated for this type of control system. The mission requires the ACS to hold multiple stable, unstable, and non-equilibrium attitudes, as well as eject a 3U CubeSat from an onboard P-POD and recover from the ensuing tumble. This paper describes the Attitude Control System, the reasons for design choices, how the ACS integrates with the rest of the spacecraft, and gives recommendations for potential future applications of the work.

  3. Watching the detectives: crime programming, fear of crime, and attitudes about the criminal justice system.

    PubMed

    Kort-Butler, Lisa A; Sittner Hartshorn, Kelley J

    2011-01-01

    Research demonstrates a complex relationship between television viewing and fear of crime. Social critics assert that media depictions perpetuate the dominant cultural ideology about crime and criminal justice. This article examines whether program type differentially affects fear of crime and perceptions of the crime rate. Next, it tests whether such programming differentially affects viewers' attitudes about the criminal justice system, and if these relationships are mediated by fear. Results indicated that fear mediated the relationship between viewing nonfictional shows and lack of support for the justice system. Viewing crime dramas predicted support for the death penalty, but this relationship was not mediated by fear. News viewership was unrelated to either fear or attitudes. The results support the idea that program type matters when it comes to understanding people's fear of crime and their attitudes about criminal justice.

  4. Watching the detectives: crime programming, fear of crime, and attitudes about the criminal justice system.

    PubMed

    Kort-Butler, Lisa A; Sittner Hartshorn, Kelley J

    2011-01-01

    Research demonstrates a complex relationship between television viewing and fear of crime. Social critics assert that media depictions perpetuate the dominant cultural ideology about crime and criminal justice. This article examines whether program type differentially affects fear of crime and perceptions of the crime rate. Next, it tests whether such programming differentially affects viewers' attitudes about the criminal justice system, and if these relationships are mediated by fear. Results indicated that fear mediated the relationship between viewing nonfictional shows and lack of support for the justice system. Viewing crime dramas predicted support for the death penalty, but this relationship was not mediated by fear. News viewership was unrelated to either fear or attitudes. The results support the idea that program type matters when it comes to understanding people's fear of crime and their attitudes about criminal justice. PMID:21337735

  5. Abortion in Croatia and Slovenia.

    PubMed

    1992-01-01

    In Slovenia abortion will continue to be available during the first 10 weeks of pregnancy as it has been since 1978. The Slovenian Constitutional Court passed this decision in December, 1991 calling the right to abortion a basic human right. T he ruling was a setback both for the government's conservative parties and the Catholic church. In Croatia, where the Catholic church is campaigning against abortion, the situation is quite different. Zagreb is full of stickers and posters with anti-abortion messages branding abortion murder and spreading inaccurate information in announcements. In 1990, there were 56,000 abortions. For every child that was born, one was aborted. The largest Croatian newspaper publicizes the Catholic view. They want pro-choice women of the volunteer group Tresnjevka to stop their struggle. The church and conservative women's groups press for inclusion of abortion in the Constitution. They are very powerful, and the fear is that might soon succeed in restricting or outlawing abortion. Tresnjevka is making efforts to organize a coordination and information center for women in Zagreb where there are 350,000 women and children refugees. Informative brochures are printed on natural healing methods in gynecology, as drugs are very scarce, and addresses for gynecological emergency care are also provided. Abortion has been legally available on demand during the 1st 10 weeks of pregnancy since 1978. Fore year Tresnjevka has worked for women, trying to raise funds from personal donations and from the government for their activities. Funds from foreign countries have never been received. At present many of the group's activities are on hold because of lack of funds, nevertheless the determination to continue fighting is alive. PMID:12285925

  6. Teenage pregnancies and abortion.

    PubMed

    Morgenthau, J E

    1984-01-01

    The issue of abortion, except when it is rendered moot because the fetus endangers the life of the mother, is not really a medical issue. The physician's role is to help patients achieve and maintain their maximum potential for physical, mental, and social well-being. To accomplish this, the physician must acquire a constantly evolving database of scientific knowledge, must evaluate this information in a critical and ethical manner, and must be prepared to apply what is learned. In the realm of applied ethics, no particular religion, profession, culture, class, or sex should be thought of as having all the answers in the realm of applied ethics. This physician's actions are predicated on the belief that, to a large extent, ethical precepts reflect the broader social and economic issues of the period in which they are articulated. If this is the case, then in today's world the population explosion, the postindustrial society, the women's rights movement, inequality of access, and the ability to perform prenatal diagnosis are all factors which have molded the approach to the issue of abortion. Only the last 3 of these can in any way be considered as medical. When considering the role of a physician in dealing with the issue of abortion in the adolescent, this individual relies on the concept articulated by the World Health Association (WHA): promoting the physical, emotional, and social well-being of one's patients. Each year in the US over 1 million 15-19 year olds become pregnant, resulting in over 600,000 births. Most of these pregnancies are unintentional, yet approximately 90% of the infants are kept in the home by mothers who are ill prepared to be parents. What is most disturbing is that the pregnancy rate for the younger mother, 16 years or under, is accounting for an ever increasing percentage of the total. Studies at the Adolescent Health Center of the Mount Sinai Hospital in New York City as well as national studies suggest that the younger teens are more

  7. Variables Related to Pro-Choice Attitudes among Undergraduates.

    ERIC Educational Resources Information Center

    Wright, Loyd S.; Rogers, Robyn R.

    1987-01-01

    Used self-administered questionnaires to assess pro-choice attitudes of 840 undergraduates just prior to the 1984 presidential election. Students were asked whether they would approve or disapprove of abortion under four different circumstances. Results indicated that the majority of both males and females were in favor of allowing abortion under…

  8. Simulation and simulator development of a separate surface attitude command control system for light aircraft

    NASA Technical Reports Server (NTRS)

    Roskam, J.

    1976-01-01

    A detailed description is presented of the simulation philosophy and process used in the development of a Separate Surface Attitude Command control system (SSAC) for a Beech Model 99 Airliner. The intent of this system is to provide complete three axes stability augmentation at low cost and without the need for system redundancy. The system, although aimed at the general aviation market, also has applications to certain military airplanes as well as to miniature submarines.

  9. Performance analysis of an integrated GPS/inertial attitude determination system. M.S. Thesis - MIT

    NASA Technical Reports Server (NTRS)

    Sullivan, Wendy I.

    1994-01-01

    The performance of an integrated GPS/inertial attitude determination system is investigated using a linear covariance analysis. The principles of GPS interferometry are reviewed, and the major error sources of both interferometers and gyroscopes are discussed and modeled. A new figure of merit, attitude dilution of precision (ADOP), is defined for two possible GPS attitude determination methods, namely single difference and double difference interferometry. Based on this figure of merit, a satellite selection scheme is proposed. The performance of the integrated GPS/inertial attitude determination system is determined using a linear covariance analysis. Based on this analysis, it is concluded that the baseline errors (i.e., knowledge of the GPS interferometer baseline relative to the vehicle coordinate system) are the limiting factor in system performance. By reducing baseline errors, it should be possible to use lower quality gyroscopes without significantly reducing performance. For the cases considered, single difference interferometry is only marginally better than double difference interferometry. Finally, the performance of the system is found to be relatively insensitive to the satellite selection technique.

  10. Reusable Reentry Satellite (RRS) system design study. Phase B, appendix E: Attitude control system study

    NASA Technical Reports Server (NTRS)

    1991-01-01

    A study which consisted of a series of design analyses for an Attitude Control System (ACS) to be incorporated into the Re-usable Re-entry Satellite (RRS) was performed. The main thrust of the study was associated with defining the control laws and estimating the mass and power requirements of the ACS needed to meet the specified performance goals. The analyses concentrated on the different on-orbit control modes which start immediately after the separation of the RRS from the launch vehicle. The three distinct on-orbit modes considered for these analyses are as follows: (1) Mode 1 - A Gravity Gradient (GG) three-axis stabilized spacecraft with active magnetic control; (2) Mode 2 - A GG stabilized mode with a controlled yaw rotation rate ('rotisserie') using three-axis magnetic control and also incorporating a 10 N-m-s momentum wheel along the (Z) yaw axis; and (3) Mode 3 - A spin stabilized mode of operation with the spin about the pitch (Y) axis, incorporating a 20 N-m-s momentum wheel along the pitch (Y) axis and attitude control via thrusters. To investigate the capabilities of the different controllers in these various operational modes, a series of computer simulations and trade-off analyses have been made to evaluate the achievable performance levels, and the necessary mass and power requirements.

  11. Nurses' attitudes toward the use of the bar-coding medication administration system.

    PubMed

    Marini, Sana Daya; Hasman, Arie; Huijer, Huda Abu-Saad; Dimassi, Hani

    2010-01-01

    This study determines nurses' attitudes toward bar-coding medication administration system use. Some of the factors underlying the successful use of bar-coding medication administration systems that are viewed as a connotative indicator of users' attitudes were used to gather data that describe the attitudinal basis for system adoption and use decisions in terms of subjective satisfaction. Only 67 nurses in the United States had the chance to respond to the e-questionnaire posted on the CARING list server for the months of June and July 2007. Participants rated their satisfaction with bar-coding medication administration system use based on system functionality, usability, and its positive/negative impact on the nursing practice. Results showed, to some extent, positive attitude, but the image profile draws attention to nurses' concerns for improving certain system characteristics. The high bar-coding medication administration system skills revealed a more negative perception of the system by the nursing staff. The reasons underlying dissatisfaction with bar-coding medication administration use by skillful users are an important source of knowledge that can be helpful for system development as well as system deployment. As a result, strengthening bar-coding medication administration system usability by magnifying its ability to eliminate medication errors and the contributing factors, maximizing system functionality by ascertaining its power as an extra eye in the medication administration process, and impacting the clinical nursing practice positively by being helpful to nurses, speeding up the medication administration process, and being user-friendly can offer a congenial settings for establishing positive attitude toward system use, which in turn leads to successful bar-coding medication administration system use.

  12. Abortion reporting in the United States: an examination of the federal-state partnership.

    PubMed

    Saul, R

    1998-01-01

    In the US, lack of data on abortions has been increasingly recognized as a problem because it 1) frustrates debate about abortion procedures, late-term abortions, and the incidence and timing of abortions; 2) challenges the accurate establishment of a baseline for states to use when seeking new federal grants that reward decreases in abortion rates; and 3) will hinder documentation of a shift to earlier, drug-induced abortions. Criticism of the data collection efforts of the Centers for Disease Control (CDC), however, ignores the fact that states have an independent responsibility for data collection and submission. Exploration of this topic begins by providing background information on the history of the US vital statistics system. Next, the collection of abortion data is traced from its origins in the 1960s with a consideration of the controversial nature of such reporting as well as of the impact of lack of data completeness and quality. The analysis continues with a review of the current state of abortion reporting that looks at laws, regulations, voluntary reporting, state data collection, and national data collection. The discussion concludes that a national abortion data collection system is largely in place but that variability among states affects the CDC's ability to accurately assess the data or to answer specific questions about abortion in the US. Policy-makers should match information needs with resources and investigate the limits of the current systems and data quality to improve state-level data collection and management.

  13. Reasons for delayed abortion: results of four hundred interviews.

    PubMed

    Kerenyi, T D; Glascock, E L; Horowitz, M L

    1973-10-01

    To study the reasons for the postponement of abortion, an orally administered survey was conducted which compared 200 women who had first-trimester abortions with 200 women requiring saline induction. In 1 of 4 patients studied, the health care system was responsible for the delay. Environmental factors and some personality factors seem to be responsible for the delay. Basic sexual education might prevent some of the delay.

  14. Flight test evaluation of a separate surface attitude command control system on a Beech 99 airplane

    NASA Technical Reports Server (NTRS)

    Gee, S. W.; Jenks, G. E.; Roskam, J.; Stone, R. L.

    1976-01-01

    A joint NASA/university/industry program was conducted to flight evaluate a potentially low cost separate surface implementation of attitude command in a Beech 99 airplane. Saturation of the separate surfaces was the primary cause of many problems during development. Six experienced professional pilots who made simulated instrument flight evaluations experienced improvements in airplane handling qualities in the presence of turbulence and a reduction in pilot workload. For ride quality, quantitative data show that the attitude command control system results in all cases of airplane motion being removed from the uncomfortable ride region.

  15. Smoking habits and spontaneous abortion.

    PubMed

    Sandahl, B

    1989-04-01

    Smoking habits have been compared in three samples of pregnancies: (1) spontaneous abortions (n = 610); (2) induced abortions (n = 800); and (3) deliveries (n = 1337). The variables studied were, besides smoking habits, day of LMP, outcome of earlier pregnancies, maternal age, and, for the delivery sample, also diagnoses of mother and child, gestational length, sex, and birthweight. A statistical analysis of the association between smoking and the risk of having a spontaneous abortion was made. The comparisons were made with all types of intra-uterine pregnancies but spontaneous abortions, e.g., deliveries and induced abortions. The effects and consequences of that are discussed. The smoking rates according to pregnancy outcome differ among the samples. In the induced abortion sample 58% smoked compared with 50% in the spontaneous abortion sample and 44% in the delivery sample. The well-known effect of smoking on gestational length and birthweight was shown. No significant effect of smoking on the miscarriage risk was seen. The only trend was the opposite. Possible explanations for this are discussed.

  16. Republic of Ireland: abortion controversy.

    PubMed

    1998-01-01

    The problems associated with illegal abortion dominate public discussion in Ireland. While abortion is illegal in Ireland, the Supreme Court directed in 1992 that Irish women can go to Britain for abortions when their lives are thought to be at risk. Abortion was a constant feature during the Irish Presidential election campaign in October, while a dispute about the future of a 13-year-old girl's pregnancy dominated the headlines in November. The presidential election on October 30 resulted in a victory for one of the two openly anti-choice candidates, Mary McAleese, a lawyer from Northern Ireland. With a voter turnout of 47.6%, McAleese polled 45.2% of the votes cast. Although the president may refuse to sign bills which have been passed by parliament, McAleese has said that she will sign whatever bill is placed before her, even if it liberalizes abortion law in the republic. As for the case of the 13-year-old pregnant girl, she was taken into the care of Irish health authority officials once the case was reported to the police. However, the health board, as a state agency, is prevented by Irish law from helping anyone travel abroad for abortion. The girl was eventually given leave in a judgement by a High Court Judicial Review on November 28 to travel to England for an abortion.

  17. Precision Attitude Determination System (PADS) design and analysis. Two-axis gimbal star tracker

    NASA Technical Reports Server (NTRS)

    1973-01-01

    Development of the Precision Attitude Determination System (PADS) focused chiefly on the two-axis gimballed star tracker and electronics design improved from that of Precision Pointing Control System (PPCS), and application of the improved tracker for PADS at geosynchronous altitude. System design, system analysis, software design, and hardware design activities are reported. The system design encompasses the PADS configuration, system performance characteristics, component design summaries, and interface considerations. The PADS design and performance analysis includes error analysis, performance analysis via attitude determination simulation, and star tracker servo design analysis. The design of the star tracker and electronics are discussed. Sensor electronics schematics are included. A detailed characterization of the application software algorithms and computer requirements is provided.

  18. Attitudes and Perceptions of Students in a Systems Engineering E-Learnig Course

    ERIC Educational Resources Information Center

    de Vega, Carolina Armijo; McAnally-Salas, Lewis; Lavigne, Gilles

    2009-01-01

    In this paper is reported the attitudes and perception of students in a systems Engineering e-learning course and a teacher with more than six years of experience teaching online courses. The paper reports the teacher and students' perceptions about the e-learning courses experience. Personalized interviews with some of the students were…

  19. Factors Related to Faculty Members' Attitude and Adoption of a Learning Management System

    ERIC Educational Resources Information Center

    Wichadee, Saovapa

    2015-01-01

    Learning Management Systems (LMS) play a crucial role in organizing the course contents. However, some instructors use LMS in their classes while some do not. This study aimed to discover the factors in relation to the instructors' attitude toward LMS and adoption of LMS in their course. A survey was administered to 62 instructors to follow up the…

  20. Use and Attitude towards Learning Management Systems (LMS) in Saudi Arabian Universities

    ERIC Educational Resources Information Center

    Alghamdi, Saleh Ramadhan; Bayaga, Anass

    2016-01-01

    This paper was designed to establish the relationships between faculty members' use and attitude towards Learning Management Systems (LMSs). LMSs have been adopted in various educational institutions due to their numerous applications and functionalities to improve pedagogy. As a result, faculty members are urged to utilise them for enhancing…

  1. Gender Differences in Attitudes toward Computers and Performance in the Accounting Information Systems Class

    ERIC Educational Resources Information Center

    Lenard, Mary Jane; Wessels, Susan; Khanlarian, Cindi

    2010-01-01

    Using a model developed by Young (2000), this paper explores the relationship between performance in the Accounting Information Systems course, self-assessed computer skills, and attitudes toward computers. Results show that after taking the AIS course, students experience a change in perception about their use of computers. Females'…

  2. Attitudes of Saudi Universities Faculty Members towards Using Learning Management System (JUSUR)

    ERIC Educational Resources Information Center

    Hussein, Hisham Barakat

    2011-01-01

    The research aims to identify the Attitudes of faculty members at Saudi Universities towards using E-learning Management System JUSUR, which follows the National Center for E-learning. A descriptive analysis was used as a research methodology. Ninety participants in this research were asked to complete a 5-point Likert scale questionnaire, which…

  3. Attitudes of Deaf Adults Regarding Preferred Sign Language Systems Used in the Classroom with Deaf Students.

    ERIC Educational Resources Information Center

    Kautzky-Bowden, Sally M.; Gonzales, B. Robert

    1987-01-01

    A questionnaire survey assessing attitudes of 50 deaf adults toward sign language systems used in schools found the majority supported American Sign Language and Manually Coded English-Pidgin with some reservations. Respondents were also concerned about needs of individual deaf children and deaf adult involvement in educational decision making for…

  4. Family Systems as Predictors of Career Attitude Maturity for Korean High School Students

    ERIC Educational Resources Information Center

    Lee, Sang Kil; Yi, Hyun Sook

    2010-01-01

    This study examined the relationships between family systems and high school students' career development. Family adaptability and family cohesion were considered as indicators of family function, and career attitude maturity was conceptualized as a representative factor explaining adolescents' career development. A total of 634 high school…

  5. 28 CFR 551.23 - Abortion.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 2 2013-07-01 2013-07-01 false Abortion. 551.23 Section 551.23 Judicial..., Pregnancy, Child Placement, and Abortion § 551.23 Abortion. (a) The inmate has the responsibility to decide either to have an abortion or to bear the child. (b) The Warden shall offer to provide each...

  6. 28 CFR 551.23 - Abortion.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 2 2014-07-01 2014-07-01 false Abortion. 551.23 Section 551.23 Judicial..., Pregnancy, Child Placement, and Abortion § 551.23 Abortion. (a) The inmate has the responsibility to decide either to have an abortion or to bear the child. (b) The Warden shall offer to provide each...

  7. 28 CFR 551.23 - Abortion.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 2 2011-07-01 2011-07-01 false Abortion. 551.23 Section 551.23 Judicial..., Pregnancy, Child Placement, and Abortion § 551.23 Abortion. (a) The inmate has the responsibility to decide either to have an abortion or to bear the child. (b) The Warden shall offer to provide each...

  8. 28 CFR 551.23 - Abortion.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 2 2010-07-01 2010-07-01 false Abortion. 551.23 Section 551.23 Judicial..., Pregnancy, Child Placement, and Abortion § 551.23 Abortion. (a) The inmate has the responsibility to decide either to have an abortion or to bear the child. (b) The Warden shall offer to provide each...

  9. 28 CFR 551.23 - Abortion.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 2 2012-07-01 2012-07-01 false Abortion. 551.23 Section 551.23 Judicial..., Pregnancy, Child Placement, and Abortion § 551.23 Abortion. (a) The inmate has the responsibility to decide either to have an abortion or to bear the child. (b) The Warden shall offer to provide each...

  10. ESTADIUS: A High Motion "One Arcsec" Daytime Attitude Estimation System for Stratospheric Applications

    NASA Astrophysics Data System (ADS)

    Montel, J.; Andre, Y.; Mirc, F.; Etcheto, P.; Evrard, J.; Bray, N.; Saccoccio, M.; Tomasini, L.; Perot, E.

    2015-09-01

    ESTADIUS is an autonomous, accurate and daytime attitude estimation system, for stratospheric balloons that require a high level of attitude measurement and stability. The system has been developed by CNES. ESTADIUS is based on star sensor an pyrometer data fusion within an extended Kalman filter. The star sensor is composed of a 16 MPixels visible-CCD camera and a large aperture camera lens (focal length of 135mm, aperture f/1.8, 10ºx15º field of view or FOV) which provides very accurate stars measurements due to very low pixel angular size. This also allows detecting stars against a bright sky background. The pyrometer is a 0.01º/h performance class Fiber Optic Gyroscope (FOG). The system is adapted to work down to an altitude of ~25km, even under high cinematic conditions. Key elements of ESTADIUS are: daytime conditions use (as well as night time), autonomy (automatic recognition of constellations), high angular rate robustness (a few deg/s thanks to the high performance of attitude propagation), stray-light robustness (thanks to a high performance baffle), high accuracy (<1", 1σ). Four stratospheric qualification flights were very successfully performed in 2010/2011 and 2013/2014 in Kiruna (Sweden) and Timmins (Canada). ESTADIUS will allow long stratospheric flights with a unique attitude estimation system avoiding the restriction of night/day conditions at launch. The first operational flight of ESTADIUS will be in 2015 for the PILOT scientific missions (led by IRAP and CNES in France). Further balloon missions such as CIDRE will use the system ESTADIUS is probably the first autonomous, large FOV, daytime stellar attitude measurement system. This paper details the technical features and in-flight results.

  11. CONTINUOUS ABORT GAP CLEANING AT RHIC.

    SciTech Connect

    DREES,A.FLILLER,R.III.FU,W.MICHNOFF,R.

    2004-07-05

    Since the RHIC Au-Au run in the year 2001 the 200 MHz cavity system was used at storage and a 28 MHz system during injection and acceleration. The rebucketing procedure potentially causes a higher debunching rate of heavy ion beams in addition to amplifying debunching due to other mechanisms. At the end of a four hour store, debunched beam can easily account for more than 50% of the total beam intensity. This effect is even stronger with the achieved high intensities of the RHIC Au-Au run in 2004. A beam abort at the presence of a lot of debunched beam bears the risk of magnet quenching and experimental detector damage due to uncontrolled beam losses. Thus it is desirable to avoid any accumulation of debunched beam from the beginning of each store, in particular to anticipate cases of unscheduled beam aborts due to a system failure. A combination of a fast transverse kickers and the new 2-stage copper collimator system are used to clean the abort gap continuously throughout the store with a repetition rate of 1 Hz. This report gives. an overview of the new gap cleaning procedure and the achieved performance.

  12. Marmara University Medical Students’ Perception on Sexual Violence against Women and Induced Abortion in Turkey

    PubMed Central

    Lüleci, Nimet Emel; Kaya, Eda; Aslan, Ece; Şenkal, Ece Söylem; Çiçek, Zehra Nadide

    2016-01-01

    Background: Historically, sexual assault is a common issue in Turkey. As doctors are one of the steps to help sexually assaulted women, medical students should have basic knowledge of and sensitivity regarding this subject. Another common women’s public health issue is induced abortion. In countries where access to abortion is restricted, there is a tendency towards unhealthy abortion. Aims: The aims of this study are: (1) to determine the attitudes and opinions of Marmara University Medical Faculty students about sexual assault against women and induced abortion and (2) to propose an educational program for medical students about sexual assault and abortion. Study Design: Cross-sectional study. Methods: The questionnaires were self-administered and the data were analyzed using SPSS v.15.0. First, the descriptive statistics were analyzed, followed by Chi-square for contingency tests assessing differences in attitudes toward sexual assault and induced abortion by factors such as gender and educational term. Differences were considered statistically significant at p<0.05. Results: About 89.6% of the participants (n=266) reported that they had never been sexually assaulted and about 11.5% of the women (n=19) had been sexually assaulted. There was no significant relationship between previous sexual assault and gender (p>0.05). Although there was no significant difference regarding the extent of punishment by victim’s status as a virgin, 21.3% (n=63) agreed that punishment should be more severe when the victim was a virgin. About 40.7% (n=120) agreed that the legal period of abortion in Turkey (10 weeks) should be longer. The majority (86.1%, n=255) agreed that legally prohibiting abortions causes an increase in unhealthy abortions. Conclusion: An educational program on these issues should be developed for medical students. PMID:27403386

  13. Fathers and abortion.

    PubMed

    Di Nucci, Ezio

    2014-08-01

    I argue that it is possible for prospective mothers to wrong prospective fathers by bearing their child; and that lifting paternal liability for child support does not correct the wrong inflicted to fathers. It is therefore sometimes wrong for prospective mothers to bear a child, or so I argue here. I show that my argument for considering the legitimate interests of prospective fathers is not a unique exception to an obvious right to procreate. It is, rather, part of a growing consensus that procreation can be morally problematic and that generally talking of rights in this context might not be warranted. Finally, I argue that giving up a right to procreate does not imply nor suggest giving up on women's absolute right to abort, which I defend.

  14. [Umberto Eco and abortion].

    PubMed

    1997-09-01

    The Cardinal of Milan and the linguist and writer Umberto Eco maintained a correspondence in the mid-1990s in connection with the Italian magazine ¿Liberal¿. One of the issues discussed was the conflict between belief in the value of human life and existing abortion legislation. Umberto Eco stated that he would do all in his power to dissuade a woman pregnant with his child from having an abortion, regardless of the personal cost to the parents, because the birth of a child is a miracle. He would not, however, feel capable of imposing his ethical position on anyone else. Terrible moments occur in which women have a right to make autonomous decisions concerning their bodies, their feelings, their futures. Those who disagree cite the right to life, a rather vague concept about which even atheists can be enthusiastic. The moment at which a new human being is formed has been brought to the center of Catholic theology, despite its uncertainty; the beginning of a new life may always need to be understood as a process whose end result is the newborn. Only the mother should decide at what moment the process may be interrupted. The cardinal¿s response distinguished between psychic and physical life, on the one hand, and life participating in the life of God on the other. The threshold is the moment of conception, reflecting a continuity of identity. The new being is worthy of respect. Any violation of the affection and care owed to the being can only be experienced as a profound suffering and painful laceration that may never heal. The response of Eco is unknown. PMID:12349541

  15. [Umberto Eco and abortion].

    PubMed

    1997-09-01

    The Cardinal of Milan and the linguist and writer Umberto Eco maintained a correspondence in the mid-1990s in connection with the Italian magazine ¿Liberal¿. One of the issues discussed was the conflict between belief in the value of human life and existing abortion legislation. Umberto Eco stated that he would do all in his power to dissuade a woman pregnant with his child from having an abortion, regardless of the personal cost to the parents, because the birth of a child is a miracle. He would not, however, feel capable of imposing his ethical position on anyone else. Terrible moments occur in which women have a right to make autonomous decisions concerning their bodies, their feelings, their futures. Those who disagree cite the right to life, a rather vague concept about which even atheists can be enthusiastic. The moment at which a new human being is formed has been brought to the center of Catholic theology, despite its uncertainty; the beginning of a new life may always need to be understood as a process whose end result is the newborn. Only the mother should decide at what moment the process may be interrupted. The cardinal¿s response distinguished between psychic and physical life, on the one hand, and life participating in the life of God on the other. The threshold is the moment of conception, reflecting a continuity of identity. The new being is worthy of respect. Any violation of the affection and care owed to the being can only be experienced as a profound suffering and painful laceration that may never heal. The response of Eco is unknown.

  16. Psychological sequelae of induced abortion.

    PubMed

    Romans-Clarkson, S E

    1989-12-01

    This article reviews the scientific literature on the psychological sequelae of induced abortion. The methodology and results of studies carried out over the last twenty-two years are examined critically. The unanimous consensus is that abortion does not cause deleterious psychological effects. Women most likely to show subsequent problems are those who were pressured into the operation against their own wishes, either by relatives or because their pregnancy had medical or foetal contraindications. Legislation which restricts abortion causes problems for women with unwanted pregnancies and their doctors. It is also unjust, as it adversely most affects lower socio-economic class women.

  17. Abortion incidence in Cambodia, 2005 and 2010.

    PubMed

    Fetters, Tamara; Samandari, Ghazaleh

    2015-01-01

    Although Cambodia now permits elective abortion, scarcity of research on this topic means that information on abortion incidence is limited to regional estimates. This estimation model combines national survey data from Demographic and Health Surveys (DHS) with national prospective data of abortion procedures from government health facilities, collected in 2005 and 2010, to calculate the national incidence of safe and unsafe abortion. According to DHS, the proportion of all induced abortions that took place in a health facility in the five years preceding each survey increased from almost 52% to 60%. Projecting from facility-based abortions to national estimates, the national abortion rate increased from 21 to 28 per 1000 women aged 15-44. The abortion ratio also increased from 19 to 28 per 100 live births. This research quantifies an increase in safely induced abortions in Cambodia and provides a deeper understanding of induced abortion trends in Cambodia.

  18. Attitude control study for a large flexible spacecraft using a Solar Electric Propulsion System (SEPS)

    NASA Technical Reports Server (NTRS)

    Tolivar, A. F.; Key, R. W.

    1980-01-01

    The attitude control performance of the solar electric propulsion system (SEPS) was evaluated. A thrust vector control system for powered flight control was examined along with a gas jet reaction control system, and a reaction wheel system, both of which have been proposed for nonpowered flight control. Comprehensive computer simulations of each control system were made and evaluated using a 30 mode spacecraft model. Results obtained indicate that thrust vector control and reaction wheel systems offer acceptable smooth proportional control. The gas jet control system is shown to be risky for a flexible structure such as SEPS, and is therefore, not recommended as a primary control method.

  19. Attitude Ground System (AGS) For The Magnetospheric Multi-Scale (MMS) Mission

    NASA Technical Reports Server (NTRS)

    Raymond, Juan C.; Sedlak, Joseph E.; Vint, Babak

    2015-01-01

    The Magnetospheric Multiscale (MMS) mission is a Solar-Terrestrial Probe mission consisting of four identically instrumented spin-stabilized spacecraft flying in an adjustable pyramid-like formation around the Earth. The formation of the MMS spacecraft allows for three-dimensional study of the phenomenon of magnetic reconnection, which is the primary objective of the mission. The MMS spacecraft were launched early on March 13, 2015 GMT. Due to the challenging and very constricted attitude and orbit requirements for performing the science, as well as the need to maintain the spacecraft formation, multiple ground functionalities were designed to support the mission. These functionalities were incorporated into a ground system known as the Attitude Ground System (AGS). Various AGS configurations have been used widely to support a variety of three-axis-stabilized and spin-stabilized spacecraft missions within the NASA Goddard Space Flight Center (GSFC). The original MMS operational concept required the AGS to perform highly accurate predictions of the effects of environmental disturbances on the spacecraft orientation and to plan the attitude maneuvers necessary to stay within the science attitude tolerance. The orbit adjustment requirements for formation control drove the need also to perform calibrations that have never been done before in support of NASA GSFC missions. The MMS mission required support analysts to provide fast and accurately calibrated values of the inertia tensor, center of mass, and accelerometer bias for each MMS spacecraft. During early design of the AGS functionalities, a Kalman filter for estimating the attitude, body rates, center of mass, and accelerometer bias, using only star tracker and accelerometer measurements, was heavily analyzed. A set of six distinct filters was evaluated and considered for estimating the spacecraft attitude and body rates using star tracker data only. Four of the six filters are closely related and were compared

  20. Coupled orbit-attitude dynamics and relative state estimation of spacecraft near small Solar System bodies

    NASA Astrophysics Data System (ADS)

    Misra, Gaurav; Izadi, Maziar; Sanyal, Amit; Scheeres, Daniel

    2016-04-01

    The effects of dynamical coupling between the rotational (attitude) and translational (orbital) motion of spacecraft near small Solar System bodies is investigated. This coupling arises due to the weak gravity of these bodies, as well as solar radiation pressure. The traditional approach assumes a point-mass spacecraft model to describe the translational motion of the spacecraft, while the attitude motion is considered to be completely decoupled from the translational motion. The model used here to describe the rigid-body spacecraft dynamics includes the non-uniform rotating gravity field of the small body up to second degree and order along with the attitude dependent terms, solar tide, and solar radiation pressure. This model shows that the second degree and order gravity terms due to the small body affect the dynamics of the spacecraft to the same extent as the orbit-attitude coupling due to the primary gravity (zeroth order) term. Variational integrators are used to simulate the dynamics of both the rigid spacecraft and the point mass. The small bodies considered here are modeled after Near-Earth Objects (NEO) 101955 Bennu, and 25143 Itokawa, and are assumed to be triaxial ellipsoids with uniform density. Differences in the numerically obtained trajectories of a rigid spacecraft and a point mass are then compared, to illustrate the impact of the orbit-attitude coupling on spacecraft dynamics in proximity of small bodies. Possible implications on the performance of model-based spacecraft control and on the station-keeping budget, if the orbit-attitude coupling is not accounted for in the model of the dynamics, are also discussed. An almost globally asymptotically stable motion estimation scheme based solely on visual/optical feedback that estimates the relative motion of the asteroid with respect to the spacecraft is also obtained. This estimation scheme does not require a model of the dynamics of the asteroid, which makes it perfectly suited for asteroids whose

  1. Abortion: the antithesis of womanhood?

    PubMed

    Timpson, J

    1996-04-01

    The debate regarding the practice and role of abortion has been an enduring and problematic area of discourse within the nursing literature, with a tendency towards a polarized and inevitably simplistic analysis of what, for many practitioners, women and families, remains a highly complex and morally fraught concept. This paper attempts to explore the concept of abortion from within a feminist epistemology, to present a review of the literature as regards women's reproductive health and responsibilities, and thereby to contribute to the process of better understanding the role of abortion within contemporary health care practice. In order to facilitate the study it has been necessary to explore the wide spectrum of historical, philosophical, legal, moral and political imperatives pertaining to the meaning of abortion as represented within contemporary society, not only in relation to women and their reproductive health, but to feminism, women's well-being and self-determinism per se. PMID:8675897

  2. Abortion and the human animal.

    PubMed

    Tollefsen, Christopher

    2004-01-01

    I discuss three topics. First, there is a philosophical connecting thread between several recent trends in the abortion discussion, namely, the issue of our animal nature, and physical embodiment. The philosophical name given to the position that you and I are essentially human animals is "animalism." In Section II of this paper, I argue that animalism provides a unifying theme to recent discussions of abortion. In Section III, I discuss what we do not find among recent trends in the abortion discussion, namely "the right to privacy." I suggest some reasons why the right to privacy is conspicuous by its absence. Finally, I address Patrick Lee's claim that the evil of abortion involves "the moral deterioration that the act brings to those who are complicit in it, and to the culture that fosters it."

  3. Star trackers, star catalogs, and attitude determination - Probabilistic aspects of system design

    NASA Technical Reports Server (NTRS)

    Vedder, John D.

    1992-01-01

    Optimizing spacecraft attitude determination systems that use onboard star trackers requires analysis and evaluation of some probabilistic aspects of system design. This paper discusses methods of constructing or compiling optimum star catalogs, which are defined as uniform distributions on a sphere. Both local and global measures of uniformity on a sphere are defined. Application of these methods and measures to a specific problem is also discussed. In addition, Poisson models of star tracker acquisition probabilities are formulated to provide a useful analytical basis for designing and optimizing attitude determination systems. These analytical models and methods lead to rapid and realistic quantitative results, and should therefore facilitate making system performance trades. Use of such methods should also reduce the need for performing tedious computer simulations to obtain analogous results.

  4. Behavioral immune system and ingroup derogation: the effects of infectious diseases on ingroup derogation attitudes.

    PubMed

    Wu, Qi; Tan, Chuan; Wang, Bo; Zhou, Ping

    2015-01-01

    From evolutionary reasoning, we derived a novel hypothesis that ingroup derogation is an evolved response of behavioral immune system which follows the smoke detector principle and the functional flexibility principle. This hypothesis was tested and supported across three experiments. In Experiment 1, participants' group membership was manipulated by using a minimal group paradigm. The results indicated that mere social categorization alone - a heuristic cue that implies the differentiation between "us" and "them" - was sufficient to elicit ingroup derogation among Chinese participants, and, such an intergroup bias was positively associated with the perceived vulnerability to diseases, which was also more consistently associated with ingroup attitudes. Experiment 2 extended and partially replicated Experiment 1 by showing that when there were cues of diseases in the immediate physical environment, Chinese participants exaggerated their attitudes of ingroup derogation. The results also showed that this effect was mainly driven by outgroup attraction. Experiment 3 changed the method of disease manipulation, and found that Chinese participants responded more strongly to disease cues originating from ingroup members and that they endorsed more ingroup derogation attitudes even when the ingroup and outgroup members were both displaying cues of diseases. Taken together, these results reveal the previously unexplored effects of infectious diseases on ingroup derogation attitudes, and suggest an interesting linkage between the evolved behavioral immune system and the ingroup derogation.

  5. Behavioral Immune System and Ingroup Derogation: The Effects of Infectious Diseases on Ingroup Derogation Attitudes

    PubMed Central

    Wang, Bo; Zhou, Ping

    2015-01-01

    From evolutionary reasoning, we derived a novel hypothesis that ingroup derogation is an evolved response of behavioral immune system which follows the smoke detector principle and the functional flexibility principle. This hypothesis was tested and supported across three experiments. In Experiment 1, participants’ group membership was manipulated by using a minimal group paradigm. The results indicated that mere social categorization alone — a heuristic cue that implies the differentiation between "us" and "them" — was sufficient to elicit ingroup derogation among Chinese participants, and, such an intergroup bias was positively associated with the perceived vulnerability to diseases, which was also more consistently associated with ingroup attitudes. Experiment 2 extended and partially replicated Experiment 1 by showing that when there were cues of diseases in the immediate physical environment, Chinese participants exaggerated their attitudes of ingroup derogation. The results also showed that this effect was mainly driven by outgroup attraction. Experiment 3 changed the method of disease manipulation, and found that Chinese participants responded more strongly to disease cues originating from ingroup members and that they endorsed more ingroup derogation attitudes even when the ingroup and outgroup members were both displaying cues of diseases. Taken together, these results reveal the previously unexplored effects of infectious diseases on ingroup derogation attitudes, and suggest an interesting linkage between the evolved behavioral immune system and the ingroup derogation. PMID:25816247

  6. Participation of nurses in abortions.

    PubMed

    Neustatter, P L

    1980-11-29

    Doctors for a Woman's Choice on Abortion would agree with 1 point in Lord Denning's ruling on the role of nurses in abortions induced by (PGS) prostaglandins (November 15, p. 1091). The nurse should not be doing a doctor's job, as Lord Denning indicated, and we sympathize with any nurse who is doing so (though the 1967 Abortion Act allows any nurse to abstain, on grounds of conscience). However, the ruling that nurses are not legally covered to participate in any way with the "procuring of a miscarriage" (using terminology of the 1861 Offenses against the Persons Act upon which the ruling is based) does not require a radical change in the practice of late abortions (constituting only 7% of the terminations) or any change in the law. PG abortion can be done without a nurse. With the extraamniotic technique, a very cheap pump can be used to give subsequent doses of the PG (a function normally performed by a nurse) through the catheter left inserted through the cervix after the 1st dose has been given by the doctor. Alternatively, the intraamniotic method can be used, where PG is instilled into the amniotic sac via a needle passed through the abdominal wall. This normally requires only 1 dose, given by the doctor. Rarely are subsequent doses needed; however they could be given by the doctor with very little addition to his or her workload. While the fact that PG abortion can be done without nurses is not realized, late abortion will be restricted, a situation which is entirely deplorable. Also deplorable are the comments of an antiabortion nature made by Lord Denning, over and above the legal ruling in his jurisdiction to make. His ruling, furthermore, seems to have been sufficiently confused for the Department of Health to withdraw its circular on abortion and await an interpretation before issuing another. PMID:6107800

  7. [Induced abortion: pro and con].

    PubMed

    Balić, Adem; Balić, Devleta; Habibović, A; Adzajlić, A

    2003-01-01

    Induced abortion like a method of birth control is the most unpopular method but it is a choice of great deal women especially in our environment. In connection with very loud demands for sharpened the low of pregnancy interrupting, many authors analyse methods, complications and risk groups of women, its acceptability like a method of family planning. At the end they give conclusion with some concrete suggestions and the aim to reduce the number of induced abortions. PMID:14528715

  8. Endogenous Candida endophthalmitis after induced abortion.

    PubMed

    Chen, S J; Chung, Y M; Liu, J H

    1998-06-01

    Reported, in this article, are the cases of two young women who developed endogenous Candida endophthalmitis after induced abortion. Both women experienced transient fever, chills, and abdominal pain after the abortion and were given antibiotics. The diagnosis of endophthalmitis was established on the basis of typical fundus appearance, positive vaginal culture, and (in one case) positive vitreous culture. In the first woman, who received vitrectomy and intravitreal amphotericin B injection, the affected eye had a best corrected visual acuity of 20/200. In the second woman, who was given systemic corticosteroid treatment before the correct diagnosis was reached, recurrent retinal detachment developed and the best corrected visual acuity was counting fingers. It appears that Candida organisms harbored in the genital tract are directly inoculated into the venous system during induced abortion. Once in the blood, if sufficient fungal load is present, Candida albicans tends to localize in the choroid and to spread toward the retina and vitreous cavity. The immunosuppressive effect of corticosteroids further increases the risk of endophthalmitis. PMID:9645729

  9. Analytic investigation of the AEM-A/HCMM attitude control system performance. [Application Explorer Missions/Heat Capacity Mapping Mission

    NASA Technical Reports Server (NTRS)

    Lerner, G. M.; Huang, W.; Shuster, M. D.

    1977-01-01

    The Heat Capacity Mapping Mission (HCMM), scheduled for launch in 1978, will be three-axis stabilized relative to the earth in a 600-kilometer altitude, polar orbit. The autonomous attitude control system consists of three torquing coils and a momentum wheel driven in response to error signals computed from data received from an infrared horizon sensor and a magnetometer. This paper presents a simple model of the attitude dynamics and derives the equations that determine the stability of the system during both attitude acquisition (acquisition-mode) and mission operations (mission-mode). Modifications to the proposed mission-mode control laws which speed the system's response to transient attitude errors and reduce the steady-state attitude errors are suggested. Numerical simulations are performed to validate the results obtained with the simple model.

  10. Assessment of the Effects of Student Response Systems on Student Learning and Attitudes over a Broad Range of Biology Courses

    ERIC Educational Resources Information Center

    Preszler, Ralph W.; Dawe, Angus; Shuster, Charles B.; Shuster, Michele

    2007-01-01

    With the advent of wireless technology, new tools are available that are intended to enhance students' learning and attitudes. To assess the effectiveness of wireless student response systems in the biology curriculum at New Mexico State University, a combined study of student attitudes and performance was undertaken. A survey of students in six…

  11. Effects of Using a Computer Algebra System (CAS) on Junior College Students' Attitudes towards CAS and Achievement in Mathematics

    ERIC Educational Resources Information Center

    Leng, Ng Wee; Choo, Kwee Tiow; Soon, Lau Hock; Yi-Huak, Koh; Sun, Yap Yew

    2005-01-01

    This study examines the effects of using Texas Instruments' Voyage 200 calculator (V200), a graphing calculator with a built-in computer algebra system (CAS), on attitudes towards CAS and achievement in mathematics of junior college students (17 year olds). Students' attitudes towards CAS were examined using a 40-item Likert-type instrument…

  12. Genetics, amniocentesis, and abortion.

    PubMed

    Hirschhorn, K

    1984-01-01

    At this time a rather large number of congenital abnormalities still occur. About 2-3% of pregnancies will result in children with major congenital abnormalities that cannot be detected prenatally. Yet, with the availability of prenatal diagnosis for an ever increasing number of genetic problems and, more recently, for developmental problems as well, a new option was offered to couples at risk when they took the risk of pregnancy: finding out whether the fetus was abnormal. An early argument regarding the ethics of this option was formulated by Dan Callahan, director of the Hastings Institute for Ethics, Society and the Life Sciences, when he indicated the need to be careful about the term "option." A need exists to be careful about societal pressures in favor of the new medical options--on, for example, a pregnant woman who is over 35 and does not get a prenatal diagnosis; or on a woman carrying a Down's syndrome child identified by prenatal diagnosis not to have an abortion. This was the 1st specter raised when prenatal diagnosis was introduced. The most common indication for amniocentesis is the risk of chromosomal abnormalities. The risk of discovering a chromosomal abnormality by amniocentesis is about double the risk at birth because a number of chromosomally abnormal fetuses are lost late in the 2nd trimester by spontaneous abortion. The age cutoff at 35 raises an immediate ethical question: since the total number of births to women over age 35 seems to be increasing, and at the same time a greater and greater percentage of children with Down's syndrome are born to women under age 35, the question arises as to whether amniocentesis should be done on all pregnancies, and whether all births with Down's syndrome should be selectively aborted or avoided. Amniocentesis in all pregnancies is impractical at this time from the technological and the cost perspective, but the ethical question should be raised. Among the X-linked disorders, 1 group cannot be

  13. Safe abortion: a woman's right.

    PubMed

    Sangala, Vanessa

    2005-07-01

    Complications of induced abortion sadly remain significant causes of maternal mortality and morbidity around the world, but only in countries that do not provide access to safe abortion services. This article presents a brief account of how high maternal mortality from induced abortion became history in the UK and the dire consequences to women's health that unsafe abortion still has in many countries of the world. It gives a brief overview of the methods available to evacuate the uterus, with particular reference to manual vacuum aspiration. The status of the law in different countries is discussed, together with the need for health professionals to interpret repressive laws in ways that enables them to care for women who seek their help. Safe abortion services are cost effective, essential services for women. Men are part and parcel of the reason women resort to terminating a pregnancy, and, together with the countless children whose lives are dependent on a healthy caring mother, are also beneficiaries of safe abortion services. There can be no excuse for continuing to deny these services to so many women around the world.

  14. [Abortion in Colombia. Medical, legal and socioeconomic aspects].

    PubMed

    Umaña, A O

    1973-01-01

    Abortion is a social problem and criminal sanctions are very ineffective in limiting it and are seldom applied (133 legal actions vs. 65,600 cases of induced abortion in 1965). Abortion is a social disease, as are prostitution, juvenile delinquency, drug abuse, and so far has been an insoluble problem. Colombian laws should be modified to reflect reality. Sex education must be emphasized, because ignorance is one of the main causes of abortion. Leniency should be applied toward women who cooperate with the authorities in identifying the person who performed an abortion. Legalization of abortion and enforcement of strict laws against it are considered as possible solutions, but both are rejected. The former is regarded as morally unacceptable and as imposing an excessive burden on scarce health services, the latter as even worse, imposing an equivalent burden on the court system, without s olving either health or social problems. The best and probably only solution is to improve education in family planning, to promote knowledge and motivation to enable the population to make sound and responsible decisions. PMID:4804875

  15. A hospital-based study of abortion in Nepal.

    PubMed

    Thapa, P J; Thapa, S; Shrestha, N

    1992-01-01

    This report presents the major findings of a study of induced abortion in Nepal, based on 165 cases out of the 1,576 female patients identified as having abortion-related complications who were admitted to five major hospitals in urban Nepal during a one-year study period. Traditional birth attendants had been the service providers for two-fifths of the women. A longer delay in hospital referrals and lengthier hospital stays occurred for cases of induced abortion than for those of spontaneous abortion. Twelve of the 165 women in the study died in the hospital, most of them from tetanus. Deaths resulting from abortion-related complications represented more than half of all maternity-related deaths in the hospitals studied. The authors suggest that health risks could be reduced considerably by strengthening the hospital-referral system and by taking some preventive steps, such as educating the traditional birth attendants and other paramedical providers about the consequences of unsafe abortion practices; increasing the availability of contraceptive methods; and promoting the use of menstrual regulation, which has recently become available in Nepal on a limited scale, mostly in private clinics.

  16. Self-management of medical abortion: a qualitative evidence synthesis.

    PubMed

    Wainwright, Megan; Colvin, Christopher J; Swartz, Alison; Leon, Natalie

    2016-05-01

    Medical abortion is a method of pregnancy termination that by its nature enables more active involvement of women in the process of managing, and sometimes even administering the medications for, their abortions. This qualitative evidence synthesis reviewed the global evidence on experiences with, preferences for, and concerns about greater self-management of medical abortion with lesser health professional involvement. We focused on qualitative research from multiple perspectives on women's experiences of self-management of first trimester medical abortion (<12weeks gestation). We included research from both legal and legally-restricted contexts whether medical abortion was accessed through formal or informal systems. A review team of four identified 36 studies meeting inclusion criteria, extracted data from these studies, and synthesized review findings. Review findings were organized under the following themes: general perceptions of self-management, preparation for self-management, logistical considerations, issues of choice and control, and meaning and experience. The synthesis highlights that the qualitative evidence base is still small, but that the available evidence points to the overall acceptability of self-administration of medical abortion. We highlight particular considerations when offering self-management options, and identify key areas for future research. Further qualitative research is needed to strengthen this important evidence base.

  17. Self-management of medical abortion: a qualitative evidence synthesis.

    PubMed

    Wainwright, Megan; Colvin, Christopher J; Swartz, Alison; Leon, Natalie

    2016-05-01

    Medical abortion is a method of pregnancy termination that by its nature enables more active involvement of women in the process of managing, and sometimes even administering the medications for, their abortions. This qualitative evidence synthesis reviewed the global evidence on experiences with, preferences for, and concerns about greater self-management of medical abortion with lesser health professional involvement. We focused on qualitative research from multiple perspectives on women's experiences of self-management of first trimester medical abortion (<12weeks gestation). We included research from both legal and legally-restricted contexts whether medical abortion was accessed through formal or informal systems. A review team of four identified 36 studies meeting inclusion criteria, extracted data from these studies, and synthesized review findings. Review findings were organized under the following themes: general perceptions of self-management, preparation for self-management, logistical considerations, issues of choice and control, and meaning and experience. The synthesis highlights that the qualitative evidence base is still small, but that the available evidence points to the overall acceptability of self-administration of medical abortion. We highlight particular considerations when offering self-management options, and identify key areas for future research. Further qualitative research is needed to strengthen this important evidence base. PMID:27578349

  18. ASTRA1 solid state star trackers for Martin Marietta's modular attitude control system module

    NASA Astrophysics Data System (ADS)

    Gullapalli, Sarma N.; Flynn, David J.; Kissh, Frank J.; Gauthier, Albert G.; Kenney, Thomas M.

    1993-09-01

    The HD-1002 (also known as MACS) solid state star trackers being built by Hughes Danbury Optical Systems, Inc. (HDOS) for Martin Marietta Astro Space Division for use in their Modular Attitude Control Systems (MACS) Module are improved and modified versions of the ASTRA1 star trackers now in use on board the TOPEX/POSEIDON satellite. The ASTRA1 design was based on the pioneering work accomplished at HDOS over the past decade. Along with the set of trackers being built by HDOS for Space Station Freedom, these trackers answer a variety of application requirements for spacecraft attitude control systems. This paper addresses the main features of the MACS trackers, their role in the MACS Module, and summarizes the excellent preliminary performance results of the tracker, as supported by measured test data.

  19. Predictors of attitude and intention to use knowledge management system among Korean nurses.

    PubMed

    Yun, Eun Kyoung

    2013-12-01

    Knowledge sharing using Knowledge Management (KM) systems helps nurses to understand and acquire appropriate knowledge that influences the quality of healthcare service. The purpose of this study was to identify organizational and individual factors influencing attitude and intention to use KM systems among Korean nurses. A cross-sectional survey design was used to study a sample of 245 nurses employed at five hospitals in Seoul. A multiple hierarchical regression was used to examine predictors of nurses' attitude and intention to use. From an individual perspective, nurse's informatics competency was identified as a significant factor influencing attitudes toward knowledge management usage within adhocracy and clan cultures. However, from an organizational perspective, level of hospital information system was identified as a significant factor influencing KM system usage within adhocracy cultures. The findings of this study will be helpful in better understanding and assessing the impact of the factors affecting the implementation of nursing knowledge management systems and in further developing successful managerial strategies using knowledge resources in healthcare settings.

  20. Predictors of attitude and intention to use knowledge management system among Korean nurses.

    PubMed

    Yun, Eun Kyoung

    2013-12-01

    Knowledge sharing using Knowledge Management (KM) systems helps nurses to understand and acquire appropriate knowledge that influences the quality of healthcare service. The purpose of this study was to identify organizational and individual factors influencing attitude and intention to use KM systems among Korean nurses. A cross-sectional survey design was used to study a sample of 245 nurses employed at five hospitals in Seoul. A multiple hierarchical regression was used to examine predictors of nurses' attitude and intention to use. From an individual perspective, nurse's informatics competency was identified as a significant factor influencing attitudes toward knowledge management usage within adhocracy and clan cultures. However, from an organizational perspective, level of hospital information system was identified as a significant factor influencing KM system usage within adhocracy cultures. The findings of this study will be helpful in better understanding and assessing the impact of the factors affecting the implementation of nursing knowledge management systems and in further developing successful managerial strategies using knowledge resources in healthcare settings. PMID:23806194

  1. Coupled Attitude and Orbit Dynamics and Control in Formation Flying Systems

    NASA Technical Reports Server (NTRS)

    Xu, Yun-Jun; Fitz-Coy, Norman; Mason, Paul

    2003-01-01

    Formation flying systems can range from global constellations offering extended service coverage to clusters of highly coordinated vehicles that perform distributed sensing. Recently, the use of groups of micro-satellites in the areas of near Earth explorations, deep space explorations, and military applications has received considerable attention by researchers and practitioners. To date, most proposed control strategies are based on linear models (e.g., Hill-Clohessy-Wiltshire equations) or nonlinear models that are restricted to circular reference orbits. Also, all models in the literature are uncoupled between relative position and relative attitude. In this paper, a generalized dynamic model is proposed. The reference orbit is not restricted to the circular case. In this formulation, the leader or follower satellite can be in either a circular or an elliptic orbit. In addition to maintaining a specified relative position, the satellites are also required to maintain specified relative attitudes. Thus the model presented couples vehicle attitude and orbit requirements. Orbit perturbations are also included. In particular, the J(sub 2) effects are accounted in the model. Finally, a sliding mode controller is developed and used to control the relative attitude of the formation and the simulation results are presented.

  2. A Novel Sensor for Attitude Determination Using Global Positioning System Signals

    NASA Technical Reports Server (NTRS)

    Crassidis, John L.; Quinn, David A.; Markley, F. Landis; McCullough, Jon D.

    1998-01-01

    An entirely new sensor approach for attitude determination using Global Positioning System (GPS) signals is developed. The concept involves the use of multiple GPS antenna elements arrayed on a single sensor head to provide maximum GPS space vehicle availability. A number of sensor element configurations are discussed. In addition to the navigation function, the array is used to find which GPS space vehicles are within the field-of-view of each antenna element. Attitude determination is performed by considering the sightline vectors of the found GPS space vehicles together with the fixed boresight vectors of the individual antenna elements. This approach has clear advantages over the standard differential carrier-phase approach. First, errors induced by multipath effects can be significantly reduced or eliminated altogether. Also, integer ambiguity resolution is not required, nor do line biases need to be determined through costly and cumbersome self-surveys. Furthermore, the new sensor does not require individual antennas to be physically separated to form interferometric baselines to determine attitude. Finally, development potential of the new sensor is limited only by antenna and receiver technology development unlike the physical limitations of the current interferometric attitude determination scheme. Simulation results indicate that accuracies of about 1 degree (3 omega) are possible.

  3. Abortion restrictions may undermine welfare reform.

    PubMed

    1999-02-01

    Results from a study conducted by Pennsylvania State University's Population Research Institute indicate that more restrictive abortion laws in the US may have led to an increase in the number of single mothers, even given new welfare reform laws which make unmarried childbearing more costly. Study findings are based upon county rates of female-headed families from the 1980 and 1990 censuses, excluding those in Alaska and Hawaii. By making unmarried childbearing more costly, welfare reform has sparked a demand for abortion, while at the same time abortion laws have restricted access to abortion. An increasing number of unmarried women on welfare have therefore chosen childbearing over abortion. The study found a decline in the number of abortions in counties where abortion laws had become more strict. That states can now require abortion providers to notify the parents of minors who have abortions, to restrict Medicaid funding for abortions, and to establish 24-hour waiting periods has made abortion either a difficult or impossible option for some women. These restrictive abortion laws and geographic barriers to abortion have discouraged women from undergoing the procedure, increasing the number of female-headed families and single mothers. The public policy goal of reducing unmarried childbearing and female-headed families is being undermined by the growing geographic and legal barriers designed to discourage abortion. PMID:12348920

  4. Repeat abortions in New York City, 2010.

    PubMed

    Toprani, Amita; Cadwell, Betsy L; Li, Wenhui; Sackoff, Judith; Greene, Carolyn; Begier, Elizabeth

    2015-06-01

    This study aims to describe factors associated with the number of past abortions obtained by New York City (NYC) abortion patients in 2010. We calculated rates of first and repeat abortion by age, race/ethnicity, and neighborhood-level poverty and the mean number of self-reported past abortions by age, race/ethnicity, neighborhood-level poverty, number of living children, education, payment method, marital status, and nativity. We used negative binomial regression to predict number of past abortions by patient characteristics. Of the 76,614 abortions reported for NYC residents in 2010, 57% were repeat abortions. Repeat abortions comprised >50% of total abortions among the majority of sociodemographic groups we examined. Overall, mean number of past abortions was 1.3. Mean number of past abortions was higher for women aged 30-34 years (1.77), women with ≥5 children (2.50), and black non-Hispanic women (1.52). After multivariable regression, age, race/ethnicity, and number of children were the strongest predictors of number of past abortions. This analysis demonstrates that, although socioeconomic disparities exist, all abortion patients are at high risk for repeat unintended pregnancy and abortion. PMID:25779755

  5. Multisatellite attitude determination/optical aspect bias determination (MSAD/OABIAS) system description and operating guide. Volume 3: Operating guide

    NASA Astrophysics Data System (ADS)

    Joseph, M.; Keat, J.; Liu, K. S.; Plett, M. E.; Shear, M. A.; Shinohara, T.; Wertz, J. R.

    The Multisatellite Attitude Determination/Optical Aspect Bias Determination (MSAD/OABIAS) System, designed to determine spin axis orientation and biases in the alignment or performance of optical or infrared horizon sensors and Sun sensors used for spacecraft attitude determination, is described. MSAD/OABIAS uses any combination of eight observation models to process data from a single onboard horizon sensor and Sun sensor to determine simultaneously the two components of the attitude of the spacecraft, the initial phase of the Sun sensor, the spin rate, seven sensor biases, and the orbital in-track error associated with the spacecraft ephemeris information supplied to the system. In addition, the MSAD/OABIAS system provides a data simulator for system and performance testing, an independent deterministic attitude system for preprocessing and independent testing of biases determined, and a multipurpose data prediction and comparison system.

  6. Multisatellite attitude determination/optical aspect bias determination (MSAD/OABIAS) system description and operating guide. Volume 3: Operating guide

    NASA Technical Reports Server (NTRS)

    Joseph, M.; Keat, J.; Liu, K. S.; Plett, M. E.; Shear, M. A.; Shinohara, T.; Wertz, J. R.

    1983-01-01

    The Multisatellite Attitude Determination/Optical Aspect Bias Determination (MSAD/OABIAS) System, designed to determine spin axis orientation and biases in the alignment or performance of optical or infrared horizon sensors and Sun sensors used for spacecraft attitude determination, is described. MSAD/OABIAS uses any combination of eight observation models to process data from a single onboard horizon sensor and Sun sensor to determine simultaneously the two components of the attitude of the spacecraft, the initial phase of the Sun sensor, the spin rate, seven sensor biases, and the orbital in-track error associated with the spacecraft ephemeris information supplied to the system. In addition, the MSAD/OABIAS system provides a data simulator for system and performance testing, an independent deterministic attitude system for preprocessing and independent testing of biases determined, and a multipurpose data prediction and comparison system.

  7. Launch Vehicle Abort Analysis for Failures Leading to Loss of Control

    NASA Technical Reports Server (NTRS)

    Hanson, John M.; Hill, Ashley D.; Beard, Bernard B.

    2013-01-01

    Launch vehicle ascent is a time of high risk for an onboard crew. There is a large fraction of possible failures for which time is of the essence and a successful abort is possible if the detection and action happens quickly enough. This paper focuses on abort determination based on data already available from the Guidance, Navigation, and Control system. This work is the result of failure analysis efforts performed during the Ares I launch vehicle development program. The two primary areas of focus are the derivation of abort triggers to ensure that abort occurs as quickly as possible when needed, but that false aborts are avoided, and evaluation of success in aborting off the failing launch vehicle.

  8. Design study for LANDSAT-D attitude control system

    NASA Technical Reports Server (NTRS)

    Iwens, R. P.; Bernier, G. E.; Hofstadter, R. F.; Mayo, R. A.; Nakano, H.

    1977-01-01

    The gimballed Ku-band antenna system for communication with TDRS was studied. By means of an error analysis it was demonstrated that the antenna cannot be open loop pointed to TDRS by an onboard programmer, but that an autotrack system was required. After some tradeoffs, a two-axis, azimuth-elevation type gimbal configuration was recommended for the antenna. It is shown that gimbal lock only occurs when LANDSAT-D is over water where a temporary loss of the communication link to TDRS is of no consequence. A preliminary gimbal control system design is also presented. A digital computer program was written that computes antenna gimbal angle profiles, assesses percent antenna beam interference with the solar array, and determines whether the spacecraft is over land or water, a lighted earth or a dark earth, and whether the spacecraft is in eclipse.

  9. Europe's abortion wars: womb for debate.

    PubMed

    Blinken, A J

    1991-01-01

    As Europe edges toward some sort of unity, the volatile abortion debate has begun to spill across national boundaries. Reflecting the continent's religious and cultural diversity, abortion laws throughout Europe vary widely. Holland and Sweden have the most liberal abortion laws. The former allows abortion on demand, while the later permits abortion until the 18th week -- and possibly up until term, if the National Health Bureau gives permission. Britain, France, and Belgium have also adopted liberal abortion laws. Other nations, however, have more conservative laws. Since 1983, Ireland has banned abortion entirely. Spain allows abortion only in cases of rape, malformed fetuses, or when the mother's life is in danger. Many countries are also experiencing bitter debates over abortion. Czechoslovakia's liberal abortion law has come under increasing pressure, and in Poland, bishops and legislators have feuded over the legality of abortion. The move towards unification has only intensified these debates. Germany is currently without a national abortion law, as the former East Germany still enjoys a more liberal abortion law than West Germany. Differences over abortion laws have led to what is know in Europe as abortion shipping. Every year, an estimated 15,000 Irish women travel to England, some 7,000 German women go to Holland, and some 3,000 French women travel to England -- all seeking to take advantage of another country's abortion law. Some Europeans have begun to look for continent-wide laws on abortion. Recently, an Irish group argued against its country's law before the European court of Justice. Right-to-life groups have also fought to establish continent-wide restrictions. So far, it seems unlikely that Europe will reach an agreement on the issue of abortion.

  10. Contemporary issues for spontaneous abortion. Does recurrent abortion exist?

    PubMed

    Reindollar, R H

    2000-09-01

    Most of the time, spontaneous abortion is a random event and represents the natural selection process. Although a recurrent factor may be present and may cause one or more abortions for a given couple, such instances are rare. Well-substantiated causes include parental chromosomal abnormalities (e.g., translocation), antiphospholipid syndrome, PCOD, and maternal age greater than 40 years. Müllerian duplication defects are most likely a cause of pregnancy loss for some women. A growing body of evidence refutes the role of corpus luteum defect as a common cause of recurrent abortion. Other causes are numerically infrequent in occurrence. It is likely that cigarette smoking and alcohol consumption contribute to pregnancy wastage. Although some therapies for the causes listed herein have been proven effective by randomized controlled trials, most have not. Given the excellent outcome demonstrated for most couples with unexplained recurrent abortion in the absence of treatment, it is difficult to recommend unproven therapies, especially if they are invasive and expensive. Instead of examining the environment in which pregnancy has occurred or been planned, clinicians have simply counted the number of spontaneous abortions among couples in an attempt to determine who should be evaluated. The former approach would seem most appropriate and proactive.

  11. ATTDES: An Expert System for Satellite Attitude Determination and Control. 2

    NASA Technical Reports Server (NTRS)

    Mackison, Donald L.; Gifford, Kevin

    1996-01-01

    The design, analysis, and flight operations of satellite attitude determintion and attitude control systems require extensive mathematical formulations, optimization studies, and computer simulation. This is best done by an analyst with extensive education and experience. The development of programs such as ATTDES permit the use of advanced techniques by those with less experience. Typical tasks include the mission analysis to select stabilization and damping schemes, attitude determination sensors and algorithms, and control system designs to meet program requirements. ATTDES is a system that includes all of these activities, including high fidelity orbit environment models that can be used for preliminary analysis, parameter selection, stabilization schemes, the development of estimators covariance analyses, and optimization, and can support ongoing orbit activities. The modification of existing simulations to model new configurations for these purposes can be an expensive, time consuming activity that becomes a pacing item in the development and operation of such new systems. The use of an integrated tool such as ATTDES significantly reduces the effort and time required for these tasks.

  12. Nondiffracting beam based technology for an attitude measurement system for automatic orientation of shield

    NASA Astrophysics Data System (ADS)

    Ma, Guolu; Liu, Lixian; Zhao, Bin

    2015-11-01

    An electronic target technology based on a nondiffracting beam for spatial attitude determination is proposed. Automatic orientation of shield tunnel equipment is achieved by a spatial-coordinates measurement system consisting of an electronic target and a total station. During the measurement, a ranging laser beam is sent from the total station. It is transformed into a nondiffracting beam by an axicon, and the beam spot images are captured by a charged-coupled device image sensor. Since the center of the nondiffracting beam has a one-to-one mapping to the incident direction of the laser, the spatial orientation of the laser beam can be obtained via center fitting of the nondiffracting images. When this system is combined with a two-dimensional electronic inclinometer, the attitude parameters can be determined from the relationship of different spatial angles. Experimental results demonstrate that the attitude measurement system has a precision of ±0.5 mrad. Further, the engineering applications also show that the system has high operational quality and environmental adaptability.

  13. Abortion epidemic in Latin America.

    PubMed

    Viel, B

    1983-05-01

    Recent surveys have shown that 3.4 million illegal abortions may be taking place in the Latin American countries every year, with a rate of around 45/1000 women of childbearing age. Yet only in Cuba can women have abortion on demand. In the other countries the penalty for the abortionist and the client is a prison sentence. The only way of measuring the frequency of abortion is through the numbers of women entering hospitals for treatment of postabortion complication, but not all countries publish hospitals statistics that are reliable. Surveys in Chile and Colombia for 1974 show a rate of 11.7-17.9/1000 women of fertile age undergoing illegal abortions, with only 1/3 resulting in complications. The law is not strictly enforced in these countries because the number of people that will have to be prosecuted is too large and because there is no place to care for the young children of women who will be prosecuted. Yet the abortion death rate (38% of total maternal deaths) is so high that a new policy must be drawn up, especially since women who have normal deliveries are sent home earlier to make room for those with abortion complications, resulting in a high infant mortality rate. In addition the rate of pregnancies among adolescents is very high due to the permissive social atmosphere combined with a lack of sex education in the schools. Studies that would allow international comparisons to show ways to prevent the consequences of illegal abortions are needed.

  14. [Readers' position against induced abortion].

    PubMed

    1981-08-25

    Replies to the request by the Journal of Nursing on readers' positions against induced abortion indicate there is a definite personal position against induced abortion and the assistance in this procedure. Some writers expressed an emotional "no" against induced abortion. Many quoted arguments from the literature, such as a medical dictionary definition as "a premeditated criminally induced abortion." The largest group of writers quoted from the Bible, the tenor always being: "God made man, he made us with his hands; we have no right to make the decision." People with other philosophies also objected. Theosophical viewpoint considers reincarnation and the law of cause and effect (karma). This philosophy holds that induced abortion impedes the appearance of a reincarnated being. The fundamental question in the abortion problem is, "can the fetus be considered a human life?" The German anatomist Professor E. Bleckschmidt points out that from conception there is human life, hence the fertilized cell can only develop into a human being and is not merely a piece of tissue. Professional nursing interpretation is that nursing action directed towards killing of a human being (unborn child) is against the nature and the essence of the nursing profession. A different opinion states that a nurse cares for patients who have decided for the operation. The nurse doesn't judge but respects the individual's decision. Some proabortion viewpoints considered the endangering of the mother's life by the unborn child, and the case of rape. With the arguments against abortion the question arises how to help the woman with unwanted pregnancy. Psychological counseling is emphasized as well as responsible and careful assistance. Referral to the Society for Protection of the Unborn Child (VBOK) is considered as well as other agencies. Further reader comments on this subject are solicited. PMID:6913282

  15. [Induced abortion in China: problems and interventions].

    PubMed

    Wu, Shang-chun; Qiu, Hong-yan

    2010-10-01

    Pooled literatures showed that the induced abortion in China faces many problems:the number of induced abortion remains large; most cases are young and nulliparity women; the frequency of abortion is high; and the interval between one and another abortion is short. Health promotion strategies should be applied to address these problems. It is important to increase the population's awareness of contraception,especially among nulliparity and migrant populations. Routine and effective contraceptive methods should be recommended and emphasized during induced abortion and delivery to lower the rate of induced abortion.

  16. Performance analysis of a GPS Interferometric attitude determination system for a gravity gradient stabilized spacecraft. M.S. Thesis

    NASA Technical Reports Server (NTRS)

    Stoll, John C.

    1995-01-01

    The performance of an unaided attitude determination system based on GPS interferometry is examined using linear covariance analysis. The modelled system includes four GPS antennae onboard a gravity gradient stabilized spacecraft, specifically the Air Force's RADCAL satellite. The principal error sources are identified and modelled. The optimal system's sensitivities to these error sources are examined through an error budget and by varying system parameters. The effects of two satellite selection algorithms, Geometric and Attitude Dilution of Precision (GDOP and ADOP, respectively) are examined. The attitude performance of two optimal-suboptimal filters is also presented. Based on this analysis, the limiting factors in attitude accuracy are the knowledge of the relative antenna locations, the electrical path lengths from the antennae to the receiver, and the multipath environment. The performance of the system is found to be fairly insensitive to torque errors, orbital inclination, and the two satellite geometry figures-of-merit tested.

  17. A Photogrammetric System for Model Attitude Measurement in Hypersonic Wind Tunnels

    NASA Technical Reports Server (NTRS)

    Jones, Thomas W.; Lunsford, Charles B.

    2007-01-01

    A series of wind tunnel tests have been conducted to evaluate a multi-camera videogrammetric system designed to measure model attitude in hypersonic facilities. The technique utilizes processed video data and photogrammetric principles for point tracking to compute model position including pitch, roll and yaw. A discussion of the constraints encountered during the design, and a review of the measurement results obtained from the NASA Langley Research Center (LaRC) 31-Inch Mach 10 tunnel are presented.

  18. A position and attitude vision measurement system for wind tunnel slender model

    NASA Astrophysics Data System (ADS)

    Cheng, Lei; Yang, Yinong; Xue, Bindang; Zhou, Fugen; Bai, Xiangzhi

    2014-11-01

    A position and attitude vision measurement system for drop test slender model in wind tunnel is designed and developed. The system used two high speed cameras, one is put to the side of the model and another is put to the position where the camera can look up the model. Simple symbols are set on the model. The main idea of the system is based on image matching technique between the 3D-digital model projection image and the image captured by the camera. At first, we evaluate the pitch angles, the roll angles and the position of the centroid of a model through recognizing symbols in the images captured by the side camera. And then, based on the evaluated attitude info, giving a series of yaw angles, a series of projection images of the 3D-digital model are obtained. Finally, these projection images are matched with the image which captured by the looking up camera, and the best match's projection images corresponds to the yaw angle is the very yaw angle of the model. Simulation experiments are conducted and the results show that the maximal error of attitude measurement is less than 0.05°, which can meet the demand of test in wind tunnel.

  19. Public Attitudes to Housing Systems for Pregnant Pigs

    PubMed Central

    Ryan, E. B.; Fraser, D.; Weary, D. M.

    2015-01-01

    Understanding concerns about the welfare of farm animals is important for the development of socially sustainable production practices. This study used an online survey to test how views on group versus stall housing for pregnant sows varied when Canadian and US participants were provided information about these systems, including access to scientific papers, YouTube videos, Google images, and a frequently-asked-questions page (S1 Appendix). Initial responses and changes in responses after accessing the information were analyzed from Likert scores of 242 participants and from their written comments. Participants were less willing to accept the use of gestation stalls after viewing information on sow housing. For example, initially 30.4% of respondents indicated that they supported the use of gestation stalls; this declined to 17.8% after participants were provided additional information. Qualitative analysis of comments showed that supporters of gestation stalls expressed concern about the spread of disease and aggression between animals in less confined systems, whereas supporters of group housing placed more emphasis on the sow’s ability to interact socially and perform natural behaviors. These results point to public opposition to the use of gestation stalls, and indicate that the more that the public learns about gestation stalls the less willing they will be to accept their use. PMID:26559417

  20. Public Attitudes to Housing Systems for Pregnant Pigs.

    PubMed

    Ryan, E B; Fraser, D; Weary, D M

    2015-01-01

    Understanding concerns about the welfare of farm animals is important for the development of socially sustainable production practices. This study used an online survey to test how views on group versus stall housing for pregnant sows varied when Canadian and US participants were provided information about these systems, including access to scientific papers, YouTube videos, Google images, and a frequently-asked-questions page (S1 Appendix). Initial responses and changes in responses after accessing the information were analyzed from Likert scores of 242 participants and from their written comments. Participants were less willing to accept the use of gestation stalls after viewing information on sow housing. For example, initially 30.4% of respondents indicated that they supported the use of gestation stalls; this declined to 17.8% after participants were provided additional information. Qualitative analysis of comments showed that supporters of gestation stalls expressed concern about the spread of disease and aggression between animals in less confined systems, whereas supporters of group housing placed more emphasis on the sow's ability to interact socially and perform natural behaviors. These results point to public opposition to the use of gestation stalls, and indicate that the more that the public learns about gestation stalls the less willing they will be to accept their use.

  1. Public Attitudes to Housing Systems for Pregnant Pigs.

    PubMed

    Ryan, E B; Fraser, D; Weary, D M

    2015-01-01

    Understanding concerns about the welfare of farm animals is important for the development of socially sustainable production practices. This study used an online survey to test how views on group versus stall housing for pregnant sows varied when Canadian and US participants were provided information about these systems, including access to scientific papers, YouTube videos, Google images, and a frequently-asked-questions page (S1 Appendix). Initial responses and changes in responses after accessing the information were analyzed from Likert scores of 242 participants and from their written comments. Participants were less willing to accept the use of gestation stalls after viewing information on sow housing. For example, initially 30.4% of respondents indicated that they supported the use of gestation stalls; this declined to 17.8% after participants were provided additional information. Qualitative analysis of comments showed that supporters of gestation stalls expressed concern about the spread of disease and aggression between animals in less confined systems, whereas supporters of group housing placed more emphasis on the sow's ability to interact socially and perform natural behaviors. These results point to public opposition to the use of gestation stalls, and indicate that the more that the public learns about gestation stalls the less willing they will be to accept their use. PMID:26559417

  2. Abortion and the law: the Supreme Court, privacy, and abortion.

    PubMed

    Marsh, F H

    1997-01-01

    This article examines the impact of the continuing politicization of the abortion issue in the US on the rights of women and on the emerging concept of fetal rights. The introduction 1) attributes the "final and total politicization" of a woman's right to control her reproduction to the "undue burden" standard introduced by the Supreme Court in its 1992 Casey decision and 2) claims that, if unchecked, the concept of fetal rights may give the state's interest in protecting potential life supremacy over women's rights. The next section presents an in-depth discussion of the politicization of the right to abortion that covers such topics as how the courts before Casey became the forum for debating abortion policy, how the "undue burden" standard fails to set definite parameters of acceptable state behavior, how the Casey decision in effect abandons the trimester-based framework of reference provided in Roe vs. Wade, how Casey allows states to subtly coerce women seeking abortions, how the Casey decision failed to reduce the intense politicization of abortion, and how the court failed to protect individual rights to health care and abortion funding from states. Part 3 of the article begins its exploration of the concept of "fetal rights" with a sketch of the history of this concept in the US courts starting in 1884 when damages for miscarriage were denied. Ways in which fetal rights compete with the rights of a pregnant woman are described, the Supreme Court is blamed for allowing states to develop this concept, and issues of patient confidentiality versus reporting requirements are considered. It is concluded that the Supreme Court will have to act to limit fetal rights.

  3. Attitudes and attitude change.

    PubMed

    Bohner, Gerd; Dickel, Nina

    2011-01-01

    Attitudes and attitude change remain core topics of contemporary social psychology. This selective review emphasizes work published from 2005 to 2009. It addresses constructionist and stable-entity conceptualizations of attitude, the distinction between implicit and explicit measures of attitude, and implications of the foregoing for attitude change. Associative and propositional processes in attitude change are considered at a general level and in relation to evaluative conditioning. The role of bodily states and physical perceptions in attitude change is reviewed. This is followed by an integrative perspective on processing models of persuasion and the consideration of meta-cognitions in persuasion. Finally, effects of attitudes on information processing, social memory, and behavior are highlighted. Core themes cutting across the areas reviewed are attempts at integrative theorizing bringing together formerly disparate phenomena and viewpoints. PMID:20809791

  4. Optimality of incompletely measurable active and passive attitude control systems. [for satellites

    NASA Technical Reports Server (NTRS)

    Schiehlen, W.; Popp, K.

    1973-01-01

    Passive attitude control systems and active systems with incomplete state measurements are only suboptimal systems in the sense of optimal control theory, since optimal systems require complete state measurements or state estimations. An optimal system, then, requires additional hardware (especially in the case of flexible spacecraft) which results in higher costs. Therefore, it is a real engineering problem to determine how much an optimal system exceeds the suboptimal system, or in other words, what is the suboptimal system's degree of optimality. The problem will be treated in three steps: (1) definition of the degree of optimality for linear, time-invariant systems; (2) a computation method using the quadratic cost functional; (3) application to a gravity-gradient stabilized three-body satellite and a spinning flexible satellite.

  5. Psychiatric sequelae to term birth and induced early and late abortion: a longitudinal study.

    PubMed

    Athanasiou, R; Oppel, W; Michelson, L; Unger, T; Yager, M

    1973-01-01

    Three obstetric groups matched for parity, age, color, marital and socioeconomic status, were compared for the psychosocial antecedents to abortion or term delivery and sequelae that did exist. One group had induced abortion by suction curettage, the second had induced abortion by saline injection, and the third had term delivery. 373 women were interviewed during pregnancy; 211 were included in follow-up after an average of 16 months for abortion patients and 13 months for the term delivery group. The 373 women received a structured 90-minute interview about family relationships, consort relationships, living arrangements, income, education, religious behavior, sexual behavior, contraceptive knowledge and use, pregnancy history and desired family size. The Srole Anomia scale and the Rosenberg Self-Esteem scale were also used. At the followup interview, similar questions were asked and the two attitude scales were again presented. The MMPI (Minnesota Multiphasic Personality Inventory) and the SCL (Symptom Check List) were also used. 12% of the 211 follow-up scored higher than 70 on the MMPI for mania and psychopathy scales; these women were evenly divided among the three groups. SCL scales showed the three groups of patients to be similar after abortion or birth, with the only statistically significant difference being the suction curettage group, which had fewer complaints after abortion than either of the other two groups. There was no difference on the anomia or self-esteem scale between pre- or post-procedure for any of the groups. The data suggest neither great harm nor great benefit with regard to these variables due to either early or late abortion or term birth. Early abortion by suction curettage was possibly more therapeutic than carrying a pregnancy to term. There were striking improvements with regard to contraceptive use after the procedure. 71% of each group used effective contraception for more than 12 months after abortion or birth: a 20% increase

  6. From ministry orders towards constitutional debate: lessons drawn from the past 50 years of abortion laws in Hungary.

    PubMed

    Sandor, J

    1999-01-01

    This article is an analytical and chronological review of the changing course of abortion law in Hungary since the end of the second world war. During that period, official attitudes toward abortion, and the legal and policy frameworks that give concrete expression to them, have changed several times, sometimes moving back and forth between restrictiveness and permissiveness. Prof. Sandor examines these developments and situates them within the larger context of Hungarian law and public policy, with a view to illuminating the issues at stake in the current abortion debates going on in Hungary.

  7. Hospital Admission following Induced Abortion in Eastern Highlands Province, Papua New Guinea – A Descriptive Study

    PubMed Central

    Vallely, Lisa M.; Homiehombo, Primrose; Kelly-Hanku, Angela; Kumbia, Antonia; Mola, Glen D. L.; Whittaker, Andrea

    2014-01-01

    Background In Papua New Guinea abortion is restricted under the Criminal Code Act. While safe abortions should available in certain situations, frequently they are not available to the majority of women. Sepsis from unsafe abortion is a leading cause of maternal mortality. Our findings form part of a wider, mixed methods study designed to identify complications requiring hospital treatment for post abortion care and to explore the circumstances surrounding unsafe abortion. Methods Through a six month prospective study we identified all women presenting to the Eastern Highlands Provincial Hospital following spontaneous and induced abortions. We undertook semi-structured interviews with women and reviewed individual case notes, extracting demographic and clinical information. Findings Case notes were reviewed for 56% (67/119) of women presenting for post abortion care. At least 24% (28/119) of these admissions were due to induced abortion. Women presenting following induced abortions were significantly more likely to be younger, single, in education at the time of the abortion and report that the baby was unplanned and unwanted, compared to those reporting spontaneous abortion. Obtained illegally, misoprostol was the method most frequently used to end the pregnancy. Physical and mechanical means and traditional herbs were also widely reported. Conclusion In a country with a low contraceptive prevalence rate and high unmet need for family planning, all reproductive age women need access to contraceptive information and services to avoid, postpone or space pregnancies. In the absence of this, women are resorting to unsafe means to end an unwanted pregnancy, putting their lives at risk and putting an increased strain on an already struggling health system. Women in this setting need access to safe, effective means of abortion. PMID:25329982

  8. [A mutation in the mechanisms of social control: the case of abortion].

    PubMed

    Horellou-lafarge, C

    1982-01-01

    This article examines the process by which the control and suppression of abortion shifted from the judicial domain to become an object of medical control in France. Abortion was a crime under the Napoleonic Code of 1810 and remained severely punishable for a century, but the law was regarded as too severe and prosecution was lax. The prescribed punishments became less stringent in 1923 but were later toughened again. Laws against abortion did not seem fair to much of the population concerned or to many of those charged with enforcing the laws, and they did not seem to uphold any inviolable moral principle. Increasing discontent with existing abortion laws, which were felt no longer to reflect the needs or mores of the society, and moreover to penalize poor women, who could not afford medically safe abortions abroad, and a belief that the law was doing nothing to reduce the numbers of abortions were among the stimuli that prompted the search for improved legislation. The public debate about the revised abortion law and the proper role of physicians and magistrates in determing access to abortion are traced though an exposition of opinions and quotations of the major participants in the controversy. The law of 1975 removed abortion from the control of magistrates and thereby liberalized access to it, but by entrusting access to abortion to the medical profession, the law embodied a bias toward preventing abortion. New social forces were behind the 1975 law, including pressure from women's groups which were developing a new consciousness of their rights and place in society, and a new role of medical practitioners, who occupy a privileged position in a social system based on knowledge rather than property. The new law still regards abortion as an evil and attempts to discourage it by imposing numerous constraints concerning when, where, and by whom it can be performed, by not requiring health personnel or facilities to make abortion available and by limiting the

  9. Abortion: the right to an argument.

    PubMed

    Meilaender, G

    1989-01-01

    Our moral puzzles about abortion will not be resolved by resort to compromise positions and adoption of middle ground, for abortion concerns how we understand ourselves as a people and how we define membership in this community. PMID:2606652

  10. The Implementation of Satellite Attitude Control System Software Using Object Oriented Design

    NASA Technical Reports Server (NTRS)

    Reid, W. Mark; Hansell, William; Phillips, Tom; Anderson, Mark O.; Drury, Derek

    1998-01-01

    NASA established the Small Explorer (SNMX) program in 1988 to provide frequent opportunities for highly focused and relatively inexpensive space science missions. The SMEX program has produced five satellites, three of which have been successfully launched. The remaining two spacecraft are scheduled for launch within the coming year. NASA has recently developed a prototype for the next generation Small Explorer spacecraft (SMEX-Lite). This paper describes the object-oriented design (OOD) of the SMEX-Lite Attitude Control System (ACS) software. The SMEX-Lite ACS is three-axis controlled and is capable of performing sub-arc-minute pointing. This paper first describes high level requirements governing the SMEX-Lite ACS software architecture. Next, the context in which the software resides is explained. The paper describes the principles of encapsulation, inheritance, and polymorphism with respect to the implementation of an ACS software system. This paper will also discuss the design of several ACS software components. Specifically, object-oriented designs are presented for sensor data processing, attitude determination, attitude control, and failure detection. Finally, this paper will address the establishment of the ACS Foundation Class (AFC) Library. The AFC is a large software repository, requiring a minimal amount of code modifications to produce ACS software for future projects.

  11. Scout fourth stage attitude and velocity control (AVC) system feasibility study

    NASA Technical Reports Server (NTRS)

    Byars, L. B.

    1975-01-01

    The feasibility of incorporating a guidance system in the Scout fourth stage to achieve a significant improvement in expected payload delivery accuracy is studied. The technical investigations included the determination of the AVC equipment performance requirements, establishment of qualification and acceptance test levels, generation of layouts illustrating design approaches for the upper D and payload transition sections to incorporate the hardware, and the preparation of a vendor bid package. Correction concepts, utilizing inertial velocity and attitude, were identified and evaluated. Fourth stage attitude adjustments as determined from inertial velocity variation through the first three stages and a final velocity correction based upon the measured in-plane component errors at injection were employed. Results show radical reductions in apogee-perigee deviations.

  12. Crew Exploration Vehicle Launch Abort Controller Performance Analysis

    NASA Technical Reports Server (NTRS)

    Sparks, Dean W., Jr.; Raney, David L.

    2007-01-01

    This paper covers the simulation and evaluation of a controller design for the Crew Module (CM) Launch Abort System (LAS), to measure its ability to meet the abort performance requirements. The controller used in this study is a hybrid design, including features developed by the Government and the Contractor. Testing is done using two separate 6-degree-of-freedom (DOF) computer simulation implementations of the LAS/CM throughout the ascent trajectory: 1) executing a series of abort simulations along a nominal trajectory for the nominal LAS/CM system; and 2) using a series of Monte Carlo runs with perturbed initial flight conditions and perturbed system parameters. The performance of the controller is evaluated against a set of criteria, which is based upon the current functional requirements of the LAS. Preliminary analysis indicates that the performance of the present controller meets (with the exception of a few cases) the evaluation criteria mentioned above.

  13. An Exploratory Risk Perception Study of Attitudes Toward Homeland Security Systems

    SciTech Connect

    Sanquist, Thomas F.; Mahy, Heidi A.; Morris, Fred A.

    2008-08-01

    Understanding the issues surrounding public acceptance of homeland security systems is important for balancing security needs and potential civil liberties infringements. A psychometric survey was used to measure attitudes regarding homeland security systems. Psychometric rating data were obtained from 182 respondents on psychological attributes associated with 12 distinct types of homeland security systems. An inverse relationship was observed for the overall rating attributes of acceptability and risk of civil liberties infringement. Principal components analysis yielded a two factor solution, with the rating scale loading pattern suggesting factors of Perceived Effectiveness and Perceived Intrusiveness. These factors also showed an inverse relationship. The 12 different homeland security systems showed significantly different scores on the rating scales and PCA factors, which were used to rank the systems in terms of overall acceptability. Difference scores for the rating scales and PCA factors were used to compute a single acceptability value reflecting the relative weight of risks and benefits. Of the 12 systems studied, airport screening, canine detectors and radiation monitoring at borders were found to be relatively acceptable, i.e., the perceived benefits for homeland security outweighed the perceived risks to civil liberties. Students rated several systems as more effective than professionals, but the overall pattern of results for both types of subjects was similar. The data suggest that risk perception research and the psychometric paradigm are useful approaches for quantifying attitudes regarding homeland security systems and policies, and can be used to anticipate potentially significant public acceptance issues.

  14. Linear CCD attitude measurement system based on the identification of the auxiliary array CCD

    NASA Astrophysics Data System (ADS)

    Hu, Yinghui; Yuan, Feng; Li, Kai; Wang, Yan

    2015-10-01

    Object to the high precision flying target attitude measurement issues of a large space and large field of view, comparing existing measurement methods, the idea is proposed of using two array CCD to assist in identifying the three linear CCD with multi-cooperative target attitude measurement system, and to address the existing nonlinear system errors and calibration parameters and more problems with nine linear CCD spectroscopic test system of too complicated constraints among camera position caused by excessive. The mathematical model of binocular vision and three linear CCD test system are established, co-spot composition triangle utilize three red LED position light, three points' coordinates are given in advance by Cooperate Measuring Machine, the red LED in the composition of the three sides of a triangle adds three blue LED light points as an auxiliary, so that array CCD is easier to identify three red LED light points, and linear CCD camera is installed of a red filter to filter out the blue LED light points while reducing stray light. Using array CCD to measure the spot, identifying and calculating the spatial coordinates solutions of red LED light points, while utilizing linear CCD to measure three red LED spot for solving linear CCD test system, which can be drawn from 27 solution. Measured with array CCD coordinates auxiliary linear CCD has achieved spot identification, and has solved the difficult problems of multi-objective linear CCD identification. Unique combination of linear CCD imaging features, linear CCD special cylindrical lens system is developed using telecentric optical design, the energy center of the spot position in the depth range of convergence in the direction is perpendicular to the optical axis of the small changes ensuring highprecision image quality, and the entire test system improves spatial object attitude measurement speed and precision.

  15. Roe v. Wade. On abortion.

    PubMed

    French, M

    1998-01-01

    In ancient Assyria, fathers held the right of life or death over their newborn infants, but women found to have performed an abortion on themselves or others were impaled and denied burial. This punishment was otherwise reserved for crimes against the state such as high treason or assault on the king. Likewise, in Babylon if a wife arranged her husband's death so that she could marry another man, she was convicted of treason and impaled or crucified. Thus, ancient thought paralleled the husband-wife relationship with that of the state-subject. The small group of men who generally dominate institutions such as the state, the church, or a corporation have a primary demand for obedience and deference to their supreme authority from their underlings. These groups did not condemn abortion because it involved questions of life or death. After all, many states have permitted infanticide, many still sanction execution, and all are willing to sacrifice the lives of their soldiers in war. Patriarchs condemn abortion because they consider it treasonous for a woman to assert the right to use her own judgement and to treat her body as if it were her own and not the property of her husband. This denies the supremacy of the male, which is the first principle of patriarchs. Because patriarchal institutions depend upon the subjection of women, women's bodies become important markers in the struggle for human freedom. This explains why patriarchal institutions in the US have continuously attacked women's right to abortion by fragmenting the statute allowing abortion and attempting to render the fragments illegal. While US women have won other rights that can be protected legally, women require the right to abortion in order to possess the right to physical integrity and to be able to undo what men have done to them. Otherwise, men would be able to create a set-back in women's human rights by forcing women into motherhood.

  16. Study quantifies problem of abortion in the region.

    PubMed

    1994-10-01

    Findings of a multicenter study that was discussed during the 1993 Health Ministers' Conference showed that about 30% of maternal deaths in east, central, and southern Africa were associated with complications of unsafe abortion. The Commonwealth Regional Health Community Secretariat in collaboration with the Support for Analysis and Research in Africa, a project funded by USAID and the Johns Hopkins Program on Training in Reproductive Health, has coordinated a study that will help guide the development of better policies on unsafe abortion. One phase involved the collection and analysis of all published and unpublished information from computer data bases dealing with the problem. The other phase involved interviews with health care workers, patients, and managers of health care facilities in Zambia, Malawi, and Uganda. In each of the 3 countries primary data was collected from a tertiary care hospital in the capital city, a provincial hospital, and 2 rural district hospitals. The results of the primary data component showed that services for the prevention of unwanted pregnancy and treatment of complications of abortion in this region are inadequate. Unsafe abortion was also a major public health problem in the region, costing national governments a lot of resources. Findings revealed that unsafe abortion is an enormous public health problem with staggering consequences for women and the health care system, which spend an inordinate amount of money, time, and other resources to treat the consequences of unsafe abortion. Complications leading to acute and chronic injuries and sometimes death, as a result of unsafe abortion, affect women at the prime of their lives. Postabortion family planning services, health care facilities, and counseling are lacking. The Recommendations and Policy Implications of the study will be discussed by the 22nd Conference of Health Ministers with a view to developing specific actions to avert the problem.

  17. Improving abortion care in Zambia.

    PubMed

    Bradley, J; Sikazwe, N; Healy, J

    1991-01-01

    In this commentary, the impact of the introduction of manual vacuum aspiration (MVA) for incomplete abortion patients and for early uterine evacuation is discussed for the University Teaching Hospital in Lusaka, Zambia. This 3-year training and service delivery program was begun in 1988 after it was clear that 15% of maternal deaths were due to illegally induced abortion. The prior procedure of dilation and curettage (D and C) required use of the main operating room and general anesthesia, which resulted in severe congestion and treatment delays. As a result of the new MVA procedure, congestion has decreased substantially, treatment is safer and more timely, and the staff's ability to provide abortions has increased. Family planning counseling is provided to postabortion patients in a more thorough fashion, and the savings in time has improved the quality of patient-staff interactions. Specifically, the patient flow has improved from a 12-hour wait to a 4-6 hour wait and rarely requires overnight hospitalization. The demand for the main operating room had decreased which frees space, time, and commodities for other gynecological treatment. The shorter procedure and release time means a minimal loss of earnings and productivity, and allows for greater privacy in explaining absences to families, schools, or employers. The improved quality of are is reflected in the figures for number treated, i.e., in 1989, 74% were treated with MVA for incomplete abortion 12 weeks and pregnancy termination 8 weeks compared with 26% treated with D and C. In 1990, the figures were 86% with MVA and 14% with D and C. The likelihood of complications from hemorrhage and sepsis have also been reduced. The MVA procedure is also less traumatic for the patient. The increased access to safe legal abortion services is reflected in the ratio of induced to incomplete abortions between 1988-1990 (1:25 to 1:5). Family planning counseling is provided by a full-time counselor who counsels preabortion

  18. Combatting the "partial-birth abortion" myth.

    PubMed

    1998-11-01

    Despite the efforts of pro-choice activists in the US to point out the critical differences between so-called "partial-birth abortions" and late-term abortions, the public remains confused about the issue. Proposed federal legislation banning "partial-birth abortions" excludes any language defining late-term abortions (time period or fetal viability). Thus, such a ban would apply to any abortion at any stage of pregnancy. Only the states of Kansas and Utah have passed legislation that limit the ban to late-term abortions. The term "partial-birth abortion" also has no independent meaning: it is not a medical term nor does it refer to a medical procedure. The correct term, "intact dilation and extraction," is never mentioned in most proposed legislation, much of which is written in broad enough language to outlaw all abortions. Most states that passed bans on "partial-birth abortions," in fact, had previously banned late-term abortions. In Georgia, a court order revised a "partial-birth abortion" law by limiting it to post-viability dilation and extraction and insisting on exceptions to protect the pregnant women's life and health. The courts have severely limited or enjoined "partial-birth abortion" legislation in 19 of the 20 states where challenges were mounted. Because an educated public overwhelmingly rejects the bans, reproductive rights activists are attempting to educate the public despite the inability or unwillingness of the media to make the crucial distinction. PMID:12294330

  19. Combatting the "partial-birth abortion" myth.

    PubMed

    1998-11-01

    Despite the efforts of pro-choice activists in the US to point out the critical differences between so-called "partial-birth abortions" and late-term abortions, the public remains confused about the issue. Proposed federal legislation banning "partial-birth abortions" excludes any language defining late-term abortions (time period or fetal viability). Thus, such a ban would apply to any abortion at any stage of pregnancy. Only the states of Kansas and Utah have passed legislation that limit the ban to late-term abortions. The term "partial-birth abortion" also has no independent meaning: it is not a medical term nor does it refer to a medical procedure. The correct term, "intact dilation and extraction," is never mentioned in most proposed legislation, much of which is written in broad enough language to outlaw all abortions. Most states that passed bans on "partial-birth abortions," in fact, had previously banned late-term abortions. In Georgia, a court order revised a "partial-birth abortion" law by limiting it to post-viability dilation and extraction and insisting on exceptions to protect the pregnant women's life and health. The courts have severely limited or enjoined "partial-birth abortion" legislation in 19 of the 20 states where challenges were mounted. Because an educated public overwhelmingly rejects the bans, reproductive rights activists are attempting to educate the public despite the inability or unwillingness of the media to make the crucial distinction.

  20. Abortion, Moral Maturity and Civic Journalism.

    ERIC Educational Resources Information Center

    Patterson, Maggie Jones; Hall, Megan Williams

    1998-01-01

    Contributes to rhetoric, moral reasonings scholarship, and journalism scholarship by examining public rhetoric on abortion and American popular media coverage (1940s to 1990s). Finds that the feminine means of moral reasoning has emerged into the foreground of discourse on abortion. Compares emergence of a common-ground rhetoric on abortion with a…

  1. [[Prevalence of induced abortion in Korea

    PubMed

    Lim, J; Lee, S; Bae, H

    1989-07-01

    The authors analyze recent trends in the prevalence of induced abortions in South Korea. They attempt to determine motivations for abortion, examine its side effects, and investigate the impact of induced abortions on infertility. The focus is on creating recommendations for population policy and maternal and child health care. Data are from the 1988 Korean National Fertility and Family Health Survey. (SUMMARY IN ENG)

  2. Abortion in Adolescence: The Ethical Dimension.

    ERIC Educational Resources Information Center

    Silber, Thomas

    1980-01-01

    This essay, addressed to medical personnel and counselors, presents a bioethical approach to adolescent abortion. Topics include an overview of abortion in the U.S., related medical issues, data pertinent to adolescent abortions, ethical theory, adolescent moral development, and moral aspects of treatment of adolescents. (Author/DB)

  3. Abortion and Mental Health: Evaluating the Evidence

    ERIC Educational Resources Information Center

    Major, Brenda; Appelbaum, Mark; Beckman, Linda; Dutton, Mary Ann; Russo, Nancy Felipe; West, Carolyn

    2009-01-01

    The authors evaluated empirical research addressing the relationship between induced abortion and women's mental health. Two issues were addressed: (a) the relative risks associated with abortion compared with the risks associated with its alternatives and (b) sources of variability in women's responses following abortion. This article reflects…

  4. Orientation toward Abortion: Guilt or Knowledge?

    ERIC Educational Resources Information Center

    Allgeier, A.R.; And Others

    1981-01-01

    Students (N=118) were classified as pro-choice, anti-abortion, or mixed on the basis of their responses to 10 fictitious case histories of women who requested abortion. Attitudinal differences are discussed in the context of the public controversy over abortion. (Author/CM)

  5. Abortion: a legal and public health perspective.

    PubMed

    Kunins, H; Rosenfield, A

    1991-01-01

    Abortion is an issue of great public concern and debate. The majority of US citizens support a woman's right to choose, but it has not always been that way. Abortion was made legal in 1973 but women have been abortions for hundreds of years before that. The history of abortion is therefore a history of women breaking the law and subjecting themselves to great physical and social risk. Abortion law in the US has been changed mostly by the Supreme Court. After Roe v Wade (1973) there were many other cases brought before the Court involving federal and state funding of abortion, father's rights, parental consent for minors, and many other finer points of law and policy regarding abortion. Abortion is commonly practiced in many developing countries including the ones where it is illegal. The data collected from these countries gives researchers here a great deal of information on the clinical and sociological aspects of abortion. Medical technology has broadened the scope of abortion by introducing medication to induce abortion such as RU486. Abortion is no longer an exclusively surgical procedure. Since it can performed now with a pill it will be almost impossible to regulate it as strictly as before.

  6. Sociology and abortion: legacies and strategies.

    PubMed

    Imber, J B

    1979-11-01

    A survey essay sees the sociological view of abortion practice in 1979 appearing as a dense web of philosophical conundrums and at times violent political strategies; with abortion still not typically seen as 1 form of birth control among others. Attention is called to the variety of approaches to abortion in books and articles about its medical, demographic, religious, historical, political, philosophical, psychological, practical, and personal aspects. These include: James C. Mohr's Abortion in America: The Origins and Evolution of National Policy 1800-1900; Abortion, by Potts, Diggory, and Peel; Abortion in Psychosocial Perspective: Trends in Transnational Research, edited by Davis, Friedman, Van der Tak, and Seville; Linda Francke's The Ambivalence of Abortion; Mary K. Zimmerman's Passage Through Abortion: The Personal and Social Reality of Women's Experiences; Abortion Politics: The Hawaii Experience, by Steinhoff and Diamond; John Connery's Abortion: the Development of the Roman Catholic Perspective; Abortion: New Directions for Policy Studies, by Manier, Liu, and Solomon; and Harry Harris' Prenatal Diagnosis and Selective Abortion.

  7. Temporal trends and spatial distribution of unsafe abortion in Brazil, 1996-2012

    PubMed Central

    Martins-Melo, Francisco Rogerlândio; Lima, Mauricélia da Silveira; Alencar, Carlos Henrique; Ramos, Alberto Novaes; Carvalho, Francisco Herlânio Costa; Machado, Márcia Maria Tavares; Heukelbach, Jorg

    2014-01-01

    OBJECTIVE To analyze temporal trends and distribution patterns of unsafe abortion in Brazil. METHODS Ecological study based on records of hospital admissions of women due to abortion in Brazil between 1996 and 2012, obtained from the Hospital Information System of the Ministry of Health. We estimated the number of unsafe abortions stratified by place of residence, using indirect estimate techniques. The following indicators were calculated: ratio of unsafe abortions/100 live births and rate of unsafe abortion/1,000 women of childbearing age. We analyzed temporal trends through polynomial regression and spatial distribution using municipalities as the unit of analysis. RESULTS In the study period, a total of 4,007,327 hospital admissions due to abortions were recorded in Brazil. We estimated a total of 16,905,911 unsafe abortions in the country, with an annual mean of 994,465 abortions (mean unsafe abortion rate: 17.0 abortions/1,000 women of childbearing age; ratio of unsafe abortions: 33.2/100 live births). Unsafe abortion presented a declining trend at national level (R2: 94.0%, p < 0.001), with unequal patterns between regions. There was a significant reduction of unsafe abortion in the Northeast (R2: 93.0%, p < 0.001), Southeast (R2: 92.0%, p < 0.001) and Central-West regions (R2: 64.0%, p < 0.001), whereas the North (R2: 39.0%, p = 0.030) presented an increase, and the South (R2: 22.0%, p = 0.340) remained stable. Spatial analysis identified the presence of clusters of municipalities with high values for unsafe abortion, located mainly in states of the North, Northeast and Southeast Regions. CONCLUSIONS Unsafe abortion remains a public health problem in Brazil, with marked regional differences, mainly concentrated in the socioeconomically disadvantaged regions of the country. Qualification of attention to women’s health, especially to reproductive aspects and attention to pre- and post-abortion processes, are necessary and urgent strategies to be implemented

  8. Use of the MATRIXx Integrated Toolkit on the Microwave Anisotropy Probe Attitude Control System

    NASA Technical Reports Server (NTRS)

    Ward, David K.; Andrews, Stephen F.; McComas, David C.; ODonnell, James R., Jr.

    1999-01-01

    Recent advances in analytical software tools allow the analysis, simulation, flight code, and documentation of an algorithm to be generated from a single source, all within one integrated analytical design package. NASA's Microwave Anisotropy Probe project has used one such package, Integrated Systems' MATRIXx suite, in the design of the spacecraft's Attitude Control System. The project's experience with the linear analysis, simulation, code generation, and documentation tools will be presented and compared with more traditional development tools. In particular, the quality of the flight software generated will be examined in detail. Finally, lessons learned on each of the tools will be shared.

  9. Attitude control and drag compensation propulsion system for Gravity Probe-B spacecraft

    NASA Technical Reports Server (NTRS)

    Blount, D. H.

    1983-01-01

    An on board propulsion system for attitude control and drag compensation is presented which uses helium boiloff gas from an experiment package dewar as propellant. This boiloff gas would normally be vented nonpropulsively. Use of a small allowable temperature range in the dewar is exploited to store helium and accommodate incompatibilities in dewar heat leak and thruster demand flow over periods of more than one orbit. A relatively detailed thermodynamics analysis of the two phase helium dewar and simulation of pressure loss through the helium distribution system is included.

  10. The Motherhood Inventory: A Questionnaire for Studying Attitudes Toward Motherhood.

    ERIC Educational Resources Information Center

    Hare-Mustin, Rachel T.; Broderick, Patricia C.

    The Motherhood Inventory (MI) is a 40-item questionnaire developed to study attitudes toward motherhood and the motherhood myth. It includes items related to the control of reproduction, abortion, adoption, single motherhood, male-female relationships, and idealized and punitive attitudes toward mothers. The MI was investigated using 301 subjects…

  11. Dynamic Modeling of Ascent Abort Scenarios for Crewed Launches

    NASA Technical Reports Server (NTRS)

    Bigler, Mark; Boyer, Roger L.

    2015-01-01

    For the last 30 years, the United States's human space program has been focused on low Earth orbit exploration and operations with the Space Shuttle and International Space Station programs. After nearly 50 years, the U.S. is again working to return humans beyond Earth orbit. To do so, NASA is developing a new launch vehicle and spacecraft to provide this capability. The launch vehicle is referred to as the Space Launch System (SLS) and the spacecraft is called Orion. The new launch system is being developed with an abort system that will enable the crew to escape launch failures that would otherwise be catastrophic as well as probabilistic design requirements set for probability of loss of crew (LOC) and loss of mission (LOM). In order to optimize the risk associated with designing this new launch system, as well as verifying the associated requirements, NASA has developed a comprehensive Probabilistic Risk Assessment (PRA) of the integrated ascent phase of the mission that includes the launch vehicle, spacecraft and ground launch facilities. Given the dynamic nature of rocket launches and the potential for things to go wrong, developing a PRA to assess the risk can be a very challenging effort. Prior to launch and after the crew has boarded the spacecraft, the risk exposure time can be on the order of three hours. During this time, events may initiate from either of the spacecraft, the launch vehicle, or the ground systems, thus requiring an emergency egress from the spacecraft to a safe ground location or a pad abort via the spacecraft's launch abort system. Following launch, again either the spacecraft or the launch vehicle can initiate the need for the crew to abort the mission and return to the home. Obviously, there are thousands of scenarios whose outcome depends on when the abort is initiated during ascent as to how the abort is performed. This includes modeling the risk associated with explosions and benign system failures that require aborting a

  12. A neural network approach to fault detection in spacecraft attitude determination and control systems

    NASA Astrophysics Data System (ADS)

    Schreiner, John N.

    This thesis proposes a method of performing fault detection and isolation in spacecraft attitude determination and control systems. The proposed method works by deploying a trained neural network to analyze a set of residuals that are defined such that they encompass the attitude control, guidance, and attitude determination subsystems. Eight neural networks were trained using either the resilient backpropagation, Levenberg-Marquardt, or Levenberg-Marquardt with Bayesian regularization training algorithms. The results of each of the neural networks were analyzed to determine the accuracy of the networks with respect to isolating the faulty component or faulty subsystem within the ADCS. The performance of the proposed neural network-based fault detection and isolation method was compared and contrasted with other ADCS FDI methods. The results obtained via simulation showed that the best neural networks employing this method successfully detected the presence of a fault 79% of the time. The faulty subsystem was successfully isolated 75% of the time and the faulty components within the faulty subsystem were isolated 37% of the time.

  13. Design and Stability of an On-Orbit Attitude Control System Using Reaction Control Thrusters

    NASA Technical Reports Server (NTRS)

    Hall, Robert A.; Hough, Steven; Orphee, Carolina; Clements, Keith

    2015-01-01

    Principles for the design and stability of a spacecraft on-orbit attitude control system employing on-off Reaction Control System (RCS) thrusters is presented. Both the vehicle dynamics and the control system actuators are inherently nonlinear, hence traditional linear control system design approaches are not directly applicable. This paper has three main aspects: It summarizes key RCS control System design principles from the Space Shuttle and Space Station programs, it demonstrates a new approach to develop a linear model of a phase plane control system using describing functions, and applies each of these to the initial development of the NASA's next generation of upper stage vehicles. Topics addressed include thruster hardware specifications, phase plane design and stability, jet selection approaches, filter design metrics, and automaneuver logic.

  14. Fault Detection and Correction for the Solar Dynamics Observatory Attitude Control System

    NASA Technical Reports Server (NTRS)

    Starin, Scott R.; Vess, Melissa F.; Kenney, Thomas M.; Maldonado, Manuel D.; Morgenstern, Wendy M.

    2007-01-01

    The Solar Dynamics Observatory is an Explorer-class mission that will launch in early 2009. The spacecraft will operate in a geosynchronous orbit, sending data 24 hours a day to a devoted ground station in White Sands, New Mexico. It will carry a suite of instruments designed to observe the Sun in multiple wavelengths at unprecedented resolution. The Atmospheric Imaging Assembly includes four telescopes with focal plane CCDs that can image the full solar disk in four different visible wavelengths. The Extreme-ultraviolet Variability Experiment will collect time-correlated data on the activity of the Sun's corona. The Helioseismic and Magnetic Imager will enable study of pressure waves moving through the body of the Sun. The attitude control system on Solar Dynamics Observatory is responsible for four main phases of activity. The physical safety of the spacecraft after separation must be guaranteed. Fine attitude determination and control must be sufficient for instrument calibration maneuvers. The mission science mode requires 2-arcsecond control according to error signals provided by guide telescopes on the Atmospheric Imaging Assembly, one of the three instruments to be carried. Lastly, accurate execution of linear and angular momentum changes to the spacecraft must be provided for momentum management and orbit maintenance. In thsp aper, single-fault tolerant fault detection and correction of the Solar Dynamics Observatory attitude control system is described. The attitude control hardware suite for the mission is catalogued, with special attention to redundancy at the hardware level. Four reaction wheels are used where any three are satisfactory. Four pairs of redundant thrusters are employed for orbit change maneuvers and momentum management. Three two-axis gyroscopes provide full redundancy for rate sensing. A digital Sun sensor and two autonomous star trackers provide two-out-of-three redundancy for fine attitude determination. The use of software to maximize

  15. A request for an abortion.

    PubMed

    Walker, A; Marsden, S; Rubin, P

    1990-12-01

    How to manage to abortion request by a hypothetical 30-year old married woman who states the she fears a deformed child because of taking an antibiotic combination, cotrimoxazole, containing trimethoprim is discussed by 3 physicians. The 1st doctor would confirm pregnancy with an exam and a laboratory test, schedule another consultation for counseling, and schedule a pelvic ultrasound if she decides to carry the pregnancy. If she wants an abortion, the physician would counsel her at length about her marriage and the emotional consequences of abortion. The 2nd physician would advise her that fetal abnormality from trimethoprim has not been reported in women. Since this doctor is personally opposed to abortion, she would refer the patient to another doctor to make the arrangements, and counsel her again afterward. The 3rd physician added the advice that 1-2% of all U.K. births are abnormal in some way. He would take steps to establish the precise gestational date, recommend an ultrasound scan at 18 weeks to cover himself legally and suggest that the patient's husband join in the counseling session to help bring out feelings about the marriage and the pregnancy.

  16. Abortion, infanticide and moral context.

    PubMed

    Porter, Lindsey

    2013-05-01

    In 'After-birth abortion: why should the baby live?', Giubilini and Minerva argue that infanticide should be permitted for the same reasons as abortion. In particular, they argue that infanticide should be permitted even for reasons that do not primarily serve the interests (or would-be best interests) of the newborn. They claim that abortion is permissible for reasons that do not primarily serve the interests (or would-be interests) of the fetus because fetuses lack a right to life. They argue that newborns also lack a right to life, and they conclude that therefore, the same reasons that justify abortion can justify infanticide. This conclusion does not follow. The lack of a right to life is not decisive. Furthermore, the justificatory power of a given reason is a function of moral context. Generalisations about reasons across dissimilar moral contexts are invalid. However, a similar conclusion does follow-that fetus-killing and newborn-killing are morally identical in identical moral contexts-but this conclusion is trivial, since fetuses and newborns are never in identical moral contexts.

  17. Abortion, infanticide and moral context.

    PubMed

    Porter, Lindsey

    2013-05-01

    In 'After-birth abortion: why should the baby live?', Giubilini and Minerva argue that infanticide should be permitted for the same reasons as abortion. In particular, they argue that infanticide should be permitted even for reasons that do not primarily serve the interests (or would-be best interests) of the newborn. They claim that abortion is permissible for reasons that do not primarily serve the interests (or would-be interests) of the fetus because fetuses lack a right to life. They argue that newborns also lack a right to life, and they conclude that therefore, the same reasons that justify abortion can justify infanticide. This conclusion does not follow. The lack of a right to life is not decisive. Furthermore, the justificatory power of a given reason is a function of moral context. Generalisations about reasons across dissimilar moral contexts are invalid. However, a similar conclusion does follow-that fetus-killing and newborn-killing are morally identical in identical moral contexts-but this conclusion is trivial, since fetuses and newborns are never in identical moral contexts. PMID:23637451

  18. Mifepristone and first trimester abortion.

    PubMed

    Murray, S; Muse, K

    1996-06-01

    The development of safe, effective, nonsurgical methods of pregnancy termination has the potential to avert significant maternal mortality and morbidity, especially in developing countries. RU-486 blocks the action of progesterone and cortisol, leading to structural changes in the endothelium of decidual capillaries, decidual necrosis, and subsequent detachment of the products of conception. When RU-486 is administered in conjunction with a low dose of a prostaglandin such as misoprostol, the abortion rate is comparable to that for vacuum aspiration (e.g., 94-96%). This regimen is contraindicated, however, in women aged 35 years and older, smokers, and those with medical problems such as diabetes, hypertension, clotting disorders, or anemia. In countries with strict abortion laws, RU-486 has been used to induce menstrual bleeding in women whose periods are delayed up to 10 days. An obstacle to more widespread acceptance of RU-486 has been its medicalization through national guidelines that stipulate waiting periods or require multiple visits to an approved abortion clinic. Women are likely to prefer RU-486 over surgical abortion because it allows the patient more control over her pregnancy termination and is less invasive. As political controversy continues to delay RU-486's introduction to the US and most developing countries, there are concerns that the drug will become a black market commodity used for self-induction.

  19. RU-486: the "abortion pill".

    PubMed

    Herranz, G

    1991-05-23

    A report sent by the Vatican to bishops' conferences throughout the world calls RU-486, the so-called abortion pill currently available in France, "a new, serious threat to human life." The report was developed at the Vatican's request by Gonzalo Herranz, a Spanish bioethicist. A cover letter to bishops' conferences from Cardinal Alfonso Lopez Trujillo, president of the Pontifical Council for the Family, suggested that the report be used "to resist the introduction of the abortion pill RU-486 into your country." Related to TU-486 and to new terminology some use to characterize its non-surgical approach to abortion is an intention "to amoralize and thereby place the transmission of human life into an ethically neutral terrain and reduce it to pure biology," says the report. The report discusses possible future uses of RU-486 as a contraceptive, stating: "Women would no longer have to worry themselves about whether they have conceived or not. Each month they would proceed to clean out their uterus chemically." The report refers to RU-486 as "a technical step forward in an area that did not need it." It says, "The abortion pill favors a woman's privacy and secret, but it condemns her to solitude." The English text from the Vatican follows. PMID:16145821

  20. Abortion in Turkey: a matter of state, family or individual decision.

    PubMed

    Gürsoy, A

    1996-02-01

    This paper gives a historical, international and cultural outlook on the debate related to the 1982 legalization of abortion in the modern democratic republic of Turkey. A belief that the country is under-populated and subsequent pro-natalist concerns of the turn of the century seem to have strongly influenced the legal prohibition of abortion. The paper first discusses the widespread social practice and the permissive attitudes towards abortion in the late Ottoman Empire and in contemporary Turkey. The contrast between the above social situation and until recently the strict, non-permissive religious and secular attitudes are presented with a discussion of the effects of the westernization and secularization processes in the late Ottoman Empire. Moral concerns and judgements regarding abortion seem to have penetrated Ottoman society as part of the above processes beginning in the nineteenth century. The present day official religious interpretations seem to conform with the more conservative Islamic schools of thought rather than the more liberal Islamic interpretations. Furthermore, the 1982 laws which legalize abortion until the eight week of pregnancy consider family planning to be a family issue and bring the restriction of making married women have their husband's permission before preceding with abortion. As such, the present legal platform opens to question the rationales and population control motives behind the law and the importance of who it is that can make the decision to proceed with abortion. Thus, in the last 70 years a historical and ideological progression can be discerned in the line of assuming first the state and then the family to have decision making legitimacy as regards reproductive choices. Today, the platform of radical discussion has shifted to evaluating the importance of individual women in making this reproductive choice. In this context, in conclusion, the paper discussed the rationale and the logic behind and the implications for

  1. [About da tai - abortion in old Chinese folk medicine handwritten manuscripts].

    PubMed

    Zheng, Jinsheng

    2013-01-01

    Of 881 Chinese handwritten volumes with medical texts of the 17th through mid-20th century held by Staatsbibliothek zu Berlin and Ethnologisches Museum Berlin-Dahlem, 48 volumes include prescriptions for induced abortion. A comparison shows that these records are significantly different from references to abortion in Chinese printed medical texts of pre-modern times. For example, the percentage of recipes recommended for artificial abortions in handwritten texts is significantly higher than those in printed medical books. Authors of handwritten texts used 25 terms to designate artificial abortion, with the term da tai [see text], lit.: "to strike the fetus", occurring most frequently. Its meaning is well defined, in contrast to other terms used, such as duo tai [see text], lit: "to make a fetus fall", xia tai [see text], lit. "to bring a fetus down", und duan chan [see text], lit., to interrupt birthing", which is mostly used to indicate a temporary or permanent sterilization. Pre-modern Chinese medicine has not generally abstained from inducing abortions; physicians showed a differentiating attitude. While abortions were descibed as "things a [physician with an attitude of] humaneness will not do", in case a pregnancy was seen as too risky for a woman she was offered medication to terminate this pregnancy. The commercial application of abortifacients has been recorded in China since ancient times. A request for such services has continued over time for various reasons, including so-called illegitimate pregnancies, and those by nuns, widows and prostitutes. In general, recipes to induce abortions documented in printed medical literature have mild effects and are to be ingested orally. In comparison, those recommended in handwritten texts are rather toxic. Possibly to minimize the negative side-effects of such medication, practitioners of folk medicine developed mechanical devices to perform "external", i.e., vaginal approaches.

  2. Abort Trigger False Positive and False Negative Analysis Methodology for Threshold-Based Abort Detection

    NASA Technical Reports Server (NTRS)

    Melcher, Kevin J.; Cruz, Jose A.; Johnson Stephen B.; Lo, Yunnhon

    2015-01-01

    This paper describes a quantitative methodology for bounding the false positive (FP) and false negative (FN) probabilities associated with a human-rated launch vehicle abort trigger (AT) that includes sensor data qualification (SDQ). In this context, an AT is a hardware and software mechanism designed to detect the existence of a specific abort condition. Also, SDQ is an algorithmic approach used to identify sensor data suspected of being corrupt so that suspect data does not adversely affect an AT's detection capability. The FP and FN methodologies presented here were developed to support estimation of the probabilities of loss of crew and loss of mission for the Space Launch System (SLS) which is being developed by the National Aeronautics and Space Administration (NASA). The paper provides a brief overview of system health management as being an extension of control theory; and describes how ATs and the calculation of FP and FN probabilities relate to this theory. The discussion leads to a detailed presentation of the FP and FN methodology and an example showing how the FP and FN calculations are performed. This detailed presentation includes a methodology for calculating the change in FP and FN probabilities that result from including SDQ in the AT architecture. To avoid proprietary and sensitive data issues, the example incorporates a mixture of open literature and fictitious reliability data. Results presented in the paper demonstrate the effectiveness of the approach in providing quantitative estimates that bound the probability of a FP or FN abort determination.

  3. Unintended pregnancy and abortion in Uganda.

    PubMed

    Hussain, Rubina

    2013-01-01

    Unintended pregnancy is common in Uganda, leading to high levels of unplanned births, unsafe abortions, and maternal injury and death. Because most pregnancies that end in abortion are unwanted, nearly all ill health and mortality resulting from unsafe abortion is preventable. This report summarizes evidence on the context and consequences of unintended pregnancy and unsafe abortion in Uganda, points out gaps in knowledge, and highlights steps that can be taken to reduce levels of unintended pregnancy and unsafe abortion, and, in turn, the high level of maternal mortality.

  4. Family planning is reducing abortions.

    PubMed

    Clinton, H R

    1997-01-01

    This news brief presents the US President's wife's statement on the association between use of family planning and a decline in abortions worldwide. Hillary Rodham Clinton attended the Sixth Conference of Wives of Heads of State and Government of the Americas held in La Paz, Bolivia. The conference was suitably located in Bolivia, a country with the highest rates of maternal mortality in South America. Bolivia has responded by launching a national family planning campaign coordinated between government, nongovernmental, and medical organizations. Half of Bolivian women experience pregnancy and childbirth without the support of trained medical staff. Mortality from abortion complications account for about half of all maternal deaths in Bolivia. Voluntary family planning workers teach women about the benefits of child spacing, breast feeding, nutrition, prenatal and postpartum care, and safe deliveries. Bolivia has succeeded in increasing its contraceptive use rates and decreasing the number of safe and unsafe abortions. Bolivia's program effort was supported by USAID. USAID provided technical assistance and funds for the establishment of a network of primary health care clinics. Mrs. Clinton visited one such clinic in a poor neighborhood in La Paz, which in its first six months of operation provided 2200 consultations, delivered 200 babies, registered 700 new family planning users, and immunized 2500 children. Clinics such as this one will be affected by the US Congress's harsh cuts in aid, which reduce funding by 35% and delay program funding by 9 months. These US government cuts in foreign aid are expected to result in an additional 1.6 million abortions, over 8000 maternal deaths, and 134,000 infant deaths in developing countries. An investment in population assistance represents a sensible, cost-effective, and long-term strategy for improving women's health, strengthening families, and reducing abortion.

  5. Family planning is reducing abortions.

    PubMed

    Clinton, H R

    1997-01-01

    This news brief presents the US President's wife's statement on the association between use of family planning and a decline in abortions worldwide. Hillary Rodham Clinton attended the Sixth Conference of Wives of Heads of State and Government of the Americas held in La Paz, Bolivia. The conference was suitably located in Bolivia, a country with the highest rates of maternal mortality in South America. Bolivia has responded by launching a national family planning campaign coordinated between government, nongovernmental, and medical organizations. Half of Bolivian women experience pregnancy and childbirth without the support of trained medical staff. Mortality from abortion complications account for about half of all maternal deaths in Bolivia. Voluntary family planning workers teach women about the benefits of child spacing, breast feeding, nutrition, prenatal and postpartum care, and safe deliveries. Bolivia has succeeded in increasing its contraceptive use rates and decreasing the number of safe and unsafe abortions. Bolivia's program effort was supported by USAID. USAID provided technical assistance and funds for the establishment of a network of primary health care clinics. Mrs. Clinton visited one such clinic in a poor neighborhood in La Paz, which in its first six months of operation provided 2200 consultations, delivered 200 babies, registered 700 new family planning users, and immunized 2500 children. Clinics such as this one will be affected by the US Congress's harsh cuts in aid, which reduce funding by 35% and delay program funding by 9 months. These US government cuts in foreign aid are expected to result in an additional 1.6 million abortions, over 8000 maternal deaths, and 134,000 infant deaths in developing countries. An investment in population assistance represents a sensible, cost-effective, and long-term strategy for improving women's health, strengthening families, and reducing abortion. PMID:12293000

  6. Design and Stability of an On-Orbit Attitude Control System Using Reaction Control Thrusters

    NASA Technical Reports Server (NTRS)

    Hall, Robert A.; Hough, Steven; Orphee, Carolina; Clements, Keith

    2016-01-01

    Basic principles for the design and stability of a spacecraft on-orbit attitude control system employing on-off Reaction Control System (RCS) thrusters are presented. Both vehicle dynamics and the control system actuators are inherently nonlinear, hence traditional linear control system design approaches are not directly applicable. This paper has two main aspects: It summarizes key RCS design principles from earlier NASA vehicles, notably the Space Shuttle and Space Station programs, and introduces advances in the linear modelling and analyses of a phase plane control system derived in the initial development of the NASA's next upper stage vehicle, the Exploration Upper Stage (EUS). Topics include thruster hardware specifications, phase plane design and stability, jet selection approaches, filter design metrics, and RCS rotational maneuver logic.

  7. Attitude dynamics simulation subroutines for systems of hinge-connected rigid bodies

    NASA Technical Reports Server (NTRS)

    Fleischer, G. E.; Likins, P. W.

    1974-01-01

    Several computer subroutines are designed to provide the solution to minimum-dimension sets of discrete-coordinate equations of motion for systems consisting of an arbitrary number of hinge-connected rigid bodies assembled in a tree topology. In particular, these routines may be applied to: (1) the case of completely unrestricted hinge rotations, (2) the totally linearized case (all system rotations are small), and (3) the mixed, or partially linearized, case. The use of the programs in each case is demonstrated using a five-body spacecraft and attitude control system configuration. The ability of the subroutines to accommodate prescribed motions of system bodies is also demonstrated. Complete listings and user instructions are included for these routines (written in FORTRAN V) which are intended as multi- and general-purpose tools in the simulation of spacecraft and other complex electromechanical systems.

  8. Teachers' Attitudes Toward Death-Related Issues

    ERIC Educational Resources Information Center

    Perkes, A. Cordell

    1978-01-01

    Reports a study to assess teachers attitudes toward death-related issues. A questionnaire was given to 61 teachers in a graduate education course. It was found that the teachers tended to favor liberal abortion laws (67 percent), euthanasia (83 percent), and the majority (65 percent) believed in life after death. (SLH)

  9. Development of a Closed-Loop Strap Down Attitude System for an Ultrahigh Altitude Flight Experiment

    NASA Technical Reports Server (NTRS)

    Whitmore, Stephen A.; Fife, Mike; Brashear, Logan

    1997-01-01

    A low-cost attitude system has been developed for an ultrahigh altitude flight experiment. The experiment uses a remotely piloted sailplane, with the wings modified for flight at altitudes greater than 100,000 ft. Mission requirements deem it necessary to measure the aircraft pitch and bank angles with accuracy better than 1.0 deg and heading with accuracy better than 5.0 deg. Vehicle cost restrictions and gross weight limits make installing a commercial inertial navigation system unfeasible. Instead, a low-cost attitude system was developed using strap down components. Monte Carlo analyses verified that two vector measurements, magnetic field and velocity, are required to completely stabilize the error equations. In the estimating algorithm, body-axis observations of the airspeed vector and the magnetic field are compared against the inertial velocity vector and a magnetic-field reference model. Residuals are fed back to stabilize integration of rate gyros. The effectiveness of the estimating algorithm was demonstrated using data from the NASA Dryden Flight Research Center Systems Research Aircraft (SRA) flight tests. The algorithm was applied with good results to a maximum 10' pitch and bank angles. Effects of wind shears were evaluated and, for most cases, can be safely ignored.

  10. Analysis of response delay of the attitude in a single-axis rotation INS/GPS system

    NASA Astrophysics Data System (ADS)

    Zhu, Jing; Wang, Xingshu; Wang, Jun; Dai, Dongkai; Xiong, Hao

    2016-01-01

    Deflections of the vertical (DOV) are normally ignored in the gravity compensation procedure, which become one of the primary error sources in inertial navigation. In a single-axis rotation INS/GPS system, bias of the gyro and the accelerometer can be ignored, the attitude error is mainly affected by DOV. In this paper, the ideal system assumption is abandoned and the influence of DOV on the attitude is comprehensively discussed, which can be divided into two parts i.e. the direct influence and the indirect influence. The attitude error tracks the DOV along the trajectory belongs to the former. A relatively fixed delay between the attitude error and the DOV belongs to the latter. The delay is essentially induced by the weak observability of the system to the violent DOV. Factors which affect the delay are carefully analyzed. The simulation results show that the delay is mainly affected by accuracies of the inertial sensors and the GPS. It decreases with the GPS accuracy increasing, but increases with the inertial sensor accuracy increasing. The process noise covariance matrix Q plays an important role. With analysis of the characteristics of the delay, influence of the DOV on attitude is studied further, which is necessary for the attitude correction in future.

  11. Post-abortion syndrome: creating an affliction.

    PubMed

    Dadlez, E M; Andrews, William L

    2010-11-01

    The contention that abortion harms women constitutes a new strategy employed by the pro-life movement to supplement arguments about fetal rights. David C. Reardon is a prominent promoter of this strategy. Post-abortion syndrome purports to establish that abortion psychologically harms women and, indeed, can harm persons associated with women who have abortions. Thus, harms that abortion is alleged to produce are multiplied. Claims of repression are employed to complicate efforts to disprove the existence of psychological harm and causal antecedents of trauma are only selectively investigated. We argue that there is no such thing as post-abortion syndrome and that the psychological harms Reardon and others claim abortion inflicts on women can usually be ascribed to different causes. We question the evidence accumulated by Reardon and his analysis of data accumulated by others. Most importantly, we question whether the conclusions Reardon has drawn follow from the evidence he cites. PMID:19594725

  12. Divergent views on abortion and the period of ensoulment.

    PubMed

    Khitamy, Badawy A B

    2013-02-01

    A Muslim woman in her sixteenth week of pregnancy was informed that her ultrasound scan showed spina bifida, and laboratory results confirmed the diagnosis. The child would have various complications and, most probably, would need medical care for life. With the consent of her husband she decided to terminate the pregnancy. Her decision sparked controversy among Muslim clerics in her community, sparking debate between those who would allow abortion for medical reasons and those who oppose abortion for any reason. This paper will review the philosophical and theological arguments of the pro-life and pro-choice groups as well as the Islamic perspective concerning a woman's autonomy over her reproductive system, the sanctity of the fetus and the embryo, therapeutic abortion, and ensoulment. PMID:23573379

  13. Crew Exploration Vehicle Ascent Abort Trajectory Analysis and Optimization

    NASA Technical Reports Server (NTRS)

    Falck, Robert D.; Gefert, Leon P.

    2007-01-01

    The Orion Crew Exploration Vehicle is the first crewed capsule design to be developed by NASA since Project Apollo. Unlike Apollo, however, the CEV is being designed for service in both Lunar and International Space Station missions. Ascent aborts pose some issues that were not present for Apollo, due to its launch azimuth, nor Space Shuttle, due to its cross range capability. The requirement that a North Atlantic splashdown following an abort be avoidable, in conjunction with the requirement for overlapping abort modes to maximize crew survivability, drives the thrust level of the service module main engine. This paper summarizes 3DOF analysis conducted by NASA to aid in the determination of the appropriate propulsion system for the service module, and the appropriate propellant loading for ISS missions such that crew survivability is maximized.

  14. The challenges procuring of safe abortion care in Botswana.

    PubMed

    Smith, Stephanie Samantha

    2013-12-01

    Botswana's national healthcare system has experienced substantial investment as a result of a growing economy and stable government, and improvements in quality and access are notable. Despite these advances, women's reproductive health continues to suffer as a result of unsafe abortion. The personal, financial, and health costs of women seeking dangerous illegal terminations, or crossing national borders to procure a legal abortion, are evident. Twenty-one in-depth, qualitative interviews with Batswana were conducted to gain some insight into the factors which make terminating an unwanted pregnancy difficult in Botswana. This small study demonstrates that there are important socio-cultural constraints, in addition to the legal barriers, that make abortion problematic. These constraints are entrenched in the wider issue of women's rights and status in society. PMID:24558781

  15. Divergent Views on Abortion and the Period of Ensoulment

    PubMed Central

    Khitamy, Badawy A. B.

    2013-01-01

    A Muslim woman in her sixteenth week of pregnancy was informed that her ultrasound scan showed spina bifida, and laboratory results confirmed the diagnosis. The child would have various complications and, most probably, would need medical care for life. With the consent of her husband she decided to terminate the pregnancy. Her decision sparked controversy among Muslim clerics in her community, sparking debate between those who would allow abortion for medical reasons and those who oppose abortion for any reason. This paper will review the philosophical and theological arguments of the pro-life and pro-choice groups as well as the Islamic perspective concerning a woman’s autonomy over her reproductive system, the sanctity of the fetus and the embryo, therapeutic abortion, and ensoulment. PMID:23573379

  16. Divergent views on abortion and the period of ensoulment.

    PubMed

    Khitamy, Badawy A B

    2013-02-01

    A Muslim woman in her sixteenth week of pregnancy was informed that her ultrasound scan showed spina bifida, and laboratory results confirmed the diagnosis. The child would have various complications and, most probably, would need medical care for life. With the consent of her husband she decided to terminate the pregnancy. Her decision sparked controversy among Muslim clerics in her community, sparking debate between those who would allow abortion for medical reasons and those who oppose abortion for any reason. This paper will review the philosophical and theological arguments of the pro-life and pro-choice groups as well as the Islamic perspective concerning a woman's autonomy over her reproductive system, the sanctity of the fetus and the embryo, therapeutic abortion, and ensoulment.

  17. Vega roll and attitude control system algorithms trade-off study

    NASA Astrophysics Data System (ADS)

    Paulino, N.; Cuciniello, G.; Cruciani, I.; Corraro, F.; Spallotta, D.; Nebula, F.

    2013-12-01

    This paper describes the trade-off study for the selection of the most suitable algorithms for the Roll and Attitude Control System (RACS) within the FPS-A program, aimed at developing the new Flight Program Software of VEGA Launcher. Two algorithms were analyzed: Switching Lines (SL) and Quaternion Feedback Regulation. Using a development simulation tool that models two critical flight phases (Long Coasting Phase (LCP) and Payload Release (PLR) Phase), both algorithms were assessed with Monte Carlo batch simulations for both of the phases. The statistical outcomes of the results demonstrate a 100 percent success rate for Quaternion Feedback Regulation, and support the choice of this method.

  18. Transient Plume Model Testing Using LADEE Spacecraft Attitude Control System Operations

    NASA Technical Reports Server (NTRS)

    Woronowicz, Michael

    2011-01-01

    We have learned it is conceivable that the Neutral Mass Spectrometer on board the Lunarr Atmosphere Dust Environment Explorer (LADEE) could measure gases from surface-reflected Attitude Control System (ACS) thruster plume. At minimum altitude, the measurement would be maximized, and gravitational influence minimized ("short" time-of-flight (TOF) situation) Could use to verify aspects of thruster plume modeling Model the transient disturbance to NMS measurements due to ACS gases reflected from lunar surface Observe evolution of various model characteristics as measured by NMS Species magnitudes, TOF measurements, angular distribution, species separation effects

  19. Design and Development of a Real-Time Model Attitude Measurement System for Hypersonic Facilities

    NASA Technical Reports Server (NTRS)

    Jones, Thomas W.; Lunsford, Charles B.

    2005-01-01

    A series of wind tunnel tests have been conducted to evaluate a multi-camera videogrammetric system designed to measure model attitude in hypersonic facilities. The technique utilizes processed video data and applies photogrammetric principles for point tracking to compute model position including pitch, roll and yaw variables. A discussion of the constraints encountered during the design, development, and testing process, including lighting, vibration, operational range and optical access is included. Initial measurement results from the NASA Langley Research Center (LaRC) 31-Inch Mach 10 tunnel are presented.

  20. Design and Development of a Real-Time Model Attitude Measurement System for Hypersonic Facilities

    NASA Technical Reports Server (NTRS)

    Jones, Thomas W.; Lunsford, Charles B.

    2004-01-01

    A series of wind tunnel tests have been conducted to evaluate a multi-camera videogrammetric system designed to measure model attitude in hypersonic facilities. The technique utilizes processed video data and applies photogrammetric principles for point tracking to compute model position including pitch, roll and yaw variables. A discussion of the constraints encountered during the design, development, and testing process, including lighting, vibration, operational range and optical access is included. Initial measurement results from the NASA Langley Research Center (LaRC) 31-Inch Mach 10 tunnel are presented.