Science.gov

Sample records for presentation main problems

  1. Neurological disorders presenting mainly in adolescence

    PubMed Central

    Macleod, S; Appleton, R E

    2007-01-01

    The aim of this review is to discuss some of the neurological diseases that present mainly in the adolescent period. The article focuses on the usual presentation and course of the more common, and some uncommon, epilepsies, neuromuscular disorders, neurodegenerative disorders, inflammatory disorders of the central nervous system and some other, miscellaneous conditions. The article ends with a very brief and general discussion about management issues in this age group. PMID:17264287

  2. Presenting the Shuttle Main Engine Software

    NASA Technical Reports Server (NTRS)

    Schreur, Barbara

    1998-01-01

    Originally, this project was to produce an animated Powerpoint presentation of the 'Shuttle Engine and its Software' and to produce a web page with animation including the same materials but with greater detail in the description of the software. The principal emphasis was to be on the web page. Midway through the first year of the project, we were advised by the technical coordinator of this work at MSFC to concentrate on the web page alone. Also, the project was expanded to include a web presentation of the MRECS (Modular Rocket Control System). For the SSME project, the web page presentation has been completed. The integration of the animation into the web page is complete although we have been asked to speed up the animation. Also, the addition of greater detail to the description of the SSME controller software has been added. Much of the work on this program was done by students as their task for their senior project course, the capstone course of their program of study. The students gained a great deal from this project. They have learned to use VISIO, POWERPOINT, PHOTOSHOP, and several web page software packages. The starting point for this project was a PowerPoint presentation by the PI while on a Summer Faculty Fellowship at MSFC. For this project, about half of the drawings of the SSME were improved and about half were completely redrawn. The original still drawings have been animated to illustrate the fuel flow through the SSME system.

  3. Main problems in the theory of modeling of catalytic processes

    SciTech Connect

    Pisarenko, V.N.

    1994-09-01

    This paper formulates the main problems in the theory of modeling of catalytic processes yet to be solved and describes the stages of modeling. Fundamental problems of model construction for the physico-chemical phenomena and processes taking place in a catalytic reactor are considered. New methods for determining the mechanism of a catalytic reaction and selecting a kinetic model for it are analyzed. The use of the results of specially controlled experiments for the construction of models of a catalyst grain and a catalytic reactor is discussed. Algorithms are presented for determining the muliplicity of stationary states in the operation of a catalyst grain and a catalytic reactor.

  4. Transition crossing in the Fermilab Main Ring, past and present

    SciTech Connect

    Kourbanis, I.; Ng, K.Y.

    1993-05-01

    A recent installation of passive mode dampers in the Booster has eliminated most of the longitudinal emittance blowup of intense bunches due to coupled-bunch instabilities. As a result, high intensity effects (negative-mass instability) dominate the present transition crossing in the Main Ring for the high-intensity cycles. A negative-mass stability limit is derived for transition crossing in the Main Ring and recent observations of high frequency signals around transition is presented. Finally, some predictions about the effect of the negative mass instability on the transition in the Main Ring with the future upgrades are attempted.

  5. Present and proposed ground-water-level program in Maine

    USGS Publications Warehouse

    Adamik, J.T.

    1984-01-01

    A statewide observation-well program was designed for Maine. Three networks were designed to provide reliable data to describe the effects of natural and manmade stress on water levels in the State. They are a climatic-effects network, a terrain-effects network, and a local-effects network. Review of the 32 observation wells in the current program showed that only 17 wells should be retained. Each of these wells was assigned to one of the three types of networks. Fourteen wells were deactivated because of reliability problems and one was deactivated because it provided redundant data. The installation of seven additional wells in climatic-effects network is the highest priority of the proposed program. The next priority is to install 22 additional wells in the terrain-effects network. Implementation of local-effects network sites will be responsive to increases in ground-water usage and the data needs of water-resources managers. (USGS)

  6. Arctic ice presents unusual problems for pipelines

    SciTech Connect

    Palmer, A.C.

    1985-11-01

    Submarine pipelines in Arctic and deepwater conditions present difficult engineering problems. Much has been done to resolve the problems, and the way towards Arctic development is open, but much remains to be done. Difficult pipeline design problems occur in areas that appear relatively straightforward. In the southern basin of the North Sea, for instance, the water is quite shallow, but storms and tidal currents create moving sand, waves, intense sediment transport, and scour around pipelines and structures. Exploration drilling has already reached 2000 meters water depth, and production has reached 300 meters and pipelines will soon follow. A parallel requirement is for pipeline transportation across deep straits and channels. Some of the problems faced by the engineer in designing Arctic pipelines are discussed.

  7. Problem-Possibility-Pursuit-Presentation Portfolio Project

    ERIC Educational Resources Information Center

    Bedner, Nelle; MacLennan, Janet

    2004-01-01

    In a time when nearly half the country's employees are currently working in self-directed work groups, successful team working within organizations is more important than ever. The Problem-Possibility-Pursuit-Presentation (PPPP) Portfolio Project is designed to give students an opportunity to experience teamwork in a meaningful fashion. This…

  8. Hepatic capillariasis in Maine presenting as a hepatic mass.

    PubMed

    Klenzak, Jennifer; Mattia, Anthony; Valenti, August; Goldberg, John

    2005-05-01

    We report the first case of hepatic capillariasis in Maine. The patient was a 54-year-old male carpenter who presented with a subacute history of severe abdominal pain, fevers, and weight loss. Initial diagnostic studies suggested a hepatic mass associated with para-aortic lymphadenopathy. The patient underwent open laparotomy for resection of the mass. He was found to have an eosinophilic granuloma in the liver; further evaluation revealed degenerating Capillaria hepatica. The exact route of infection in this case is unknown but is most likely due to accidental ingestion of soil contaminated with mature capillaria eggs. This patient had a low parasite burden and did not exhibit significant peripheral eosinophilia. After treatment with thiabendazole, he recovered uneventfully.

  9. MENTAL RETARDATION--THE PRESENT PROBLEM.

    ERIC Educational Resources Information Center

    SHAFTER, ALBERT J.

    MENTAL RETARDATION IS DEFINED AS A MENTAL DEFECT, NOT A DISEASE. LEVELS OF SEVERITY IN MENTAL RETARDATION ARE CAUSED BY AN INTERRELATIONSHIP BETWEEN HEREDITY AND ENVIRONMENT. ONE OF THE MAJOR PROBLEMS CONCERNS THE LONGER LIFE EXPECTANCY OF THE RETARDATE DUE TO IMPROVEMENTS IN MODERN MEDICINE. THIS IS CREATING A SITUATION WHERE RESIDENTIAL…

  10. Inverse problems biomechanical imaging (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Oberai, Assad A.

    2016-03-01

    It is now well recognized that a host of imaging modalities (a list that includes Ultrasound, MRI, Optical Coherence Tomography, and optical microscopy) can be used to "watch" tissue as it deforms in response to an internal or external excitation. The result is a detailed map of the deformation field in the interior of the tissue. This deformation field can be used in conjunction with a material mechanical response to determine the spatial distribution of material properties of the tissue by solving an inverse problem. Images of material properties thus obtained can be used to quantify the health of the tissue. Recently, they have been used to detect, diagnose and monitor cancerous lesions, detect vulnerable plaque in arteries, diagnose liver cirrhosis, and possibly detect the onset of Alzheimer's disease. In this talk I will describe the mathematical and computational aspects of solving this class of inverse problems, and their applications in biology and medicine. In particular, I will discuss the well-posedness of these problems and quantify the amount of displacement data necessary to obtain a unique property distribution. I will describe an efficient algorithm for solving the resulting inverse problem. I will also describe some recent developments based on Bayesian inference in estimating the variance in the estimates of material properties. I will conclude with the applications of these techniques in diagnosing breast cancer and in characterizing the mechanical properties of cells with sub-cellular resolution.

  11. Spacecraft Charging - Present Situation and Some Problems

    DTIC Science & Technology

    2007-06-01

    does not have a magnetosphereand is therefore exposed to the solar winds. It is dusty on the moon. More on charging of lunar dust 18 in solarwind plasmas...with energy distributions needs to be studied systematically. The small dust size poses problems tosecondary electron emission, because the secondary...energetic enough, can pass through a dust particle and exit from the oppositeside. Depending on the size distribution of the dust particles 21-22 and the

  12. An Agent for the Prospect Presentation Problem

    DTIC Science & Technology

    2014-05-01

    agents and show that presen - tation can indeed affect the acceptance rate of propositions and that the agent we propose succeeds in selecting benefi- cial...associate different values with each benefit or side effect. Therefore assigning values to the components using a joined metric would require some...the customer using the most appealing presentation. Should the investment adviser show the expected probability and value of revenue (or loss) for

  13. Gulf of Maine Seals - Populations, Problems and Priorities

    DTIC Science & Technology

    2010-06-01

    needs for future study. 9 Pinnipeds in the Gulf of Maine: Status, Issues and Management, 1995 In 1995 the New England Aquarium in Boston...warranted. Meeting on Harbor seals of the Northeast (U.S.) region, 2002 and 2004 In 2004, the Maritime Aquarium at Norwalk sponsored a one-day...M. L., and G. S. Stone (Editors). 1995. Pinniped populations in the Gulf of Maine: status, issues and management. New England Aquarium Aquatic Forum

  14. [ANTHELMINTIC SUBSTANCES: MAIN CLASSES, PROBLEMS, TRENDS IN DEVELOPMENT AND PROSPECTS].

    PubMed

    Dzhafarov, M Kh; Vasilevich, F; Dovgalev, A S; Imamkuliev, K D; Pautova, E A

    2016-01-01

    The review chronologically considers the main classes of the currently available anthelminthic substances: early anthelmintic compounds, benzimidazoles, imidazolthiazoles, tetrahydropyrimidines, avermectins and milbemycins, and salicylanilides. Great attention is paid to novel substances (emodepside, monepantel, derquantel, tribendimidine) and promising developments. Some aspects of the molecular mechanisms of action of anthelmintics, their resistance, and alternative dehelmintization methods are discussed.

  15. Proper use of medical language: Main problems and solutions.

    PubMed

    Aleixandre-Benavent, R; Valderrama Zurián, J C; Bueno-Cañigral, F J

    2015-10-01

    Medical language should be characterized by its precision, emotional neutrality and stability. The effective communication of results of scientific studies depends on compliance with current standards of drafting and style; texts with defects can hinder interest in the findings. In this study, we discuss some of the most common problems and errors in medical language, including the abuse of abbreviations and foreign words, the use of improper words, syntax errors and solecisms, the most common errors in titles and the abuse of capital letters and the gerund. Investigators have effective tools for dealing with these problems, such as quality texts, critical dictionaries of questions and difficulties with the Spanish language and various drafting and style manuals.

  16. Focusing on Main Street's Problems from Secluded Laboratory Retreats

    ERIC Educational Resources Information Center

    Kushner, Lawrence M.

    1973-01-01

    A report on the National Bureau of Standards is presented. It provides national measurement standards for some 40 physical quantities related through the laws of physics to the basic six - length, time, mass, temperature, electric current, and luminous intensity. (DF)

  17. Main problems of the Russian Orlan-M space suit utilization for EVAs on the ISS

    NASA Astrophysics Data System (ADS)

    Abramov, I. P.; Pozdnyakov, S. S.; Severin, G. I.; Stoklitsky, A. Yu.

    2001-03-01

    In the recent years the Russian Orlan-M space suits have been improved as applied to their operational requirements for the ISS. A special attention is paid to enhancement of EVA crew efficiency and safety. The paper considers the main problems regarding specific features of the Russian space suit operation in the ISS, and analyses measures on their solution. In particular, the problems associated with the following are considered: enhancement of the anthropometric range for the EVA crewmembers; use of some US EMU elements and unified NASA equipment elements; Orlan-M operation support in the wide range of the ISS thermal conditions; use of Simplified Aid For Extravehicular activity Rescue (SAFER) designed as a self-rescue device, which will be used for an EVA crewmember return in the event that he (she) breaks away inadvertently from the ISS surface. The paper states the main space suit differences with reference to solution of the above problems. The paper presents briefly the design of space suit arms developed for crewmembers with small anthropometric parameters, as well as peculiarities and test results for the gloves with enhanced thermal protection. Measures on further space suit development with the purpose to improve its performances are considered.

  18. Preliminary analysis of selected gas dynamic problems. [space shuttle main engine main combustion transients and IUS nozzle flow

    NASA Technical Reports Server (NTRS)

    Prozan, R. J.; Farmer, R. C.

    1985-01-01

    The VAST computer code was used to analyze SSME main combustion chamber start-up transients and the IUS flow field for a damaged nozzle was investigated to better understand the gas dynamic considerations involved in vehicle problems, the effect of start transients on the nozzle flow field for the SSME, and the possibility that a damaged nozzle could account for the acceleration anomaly noted on IUS burn. The results obtained were compared with a method of characteristics prediction. Pressure solutions from both codes were in very good agreement and the Mach number solution on the nozzle centerline deviates substantially for the high expansions for the SSME. Since this deviation was unexpected, the phenomenon is being further examined.

  19. Klinefelter syndrome presenting as behavioral problems in a young adult

    PubMed Central

    Molnar, Alexandra M.; Terasaki, Genji S.; Amory, John K.

    2014-01-01

    Background An 18-year-old Somali man presented to a primary care clinic to investigate a potential pathophysiological reason for behavioral problems at school that had arisen in the past 1–2 years. A previous physical examination at school revealed the patient to have small, firm testicles which prompted further testing. Investigation Thyroid function and levels of prolactin, total testosterone, follicle-stimulating hormone and luteinizing hormone were determined. Testes were measured. Chromosome analysis testing was performed to determine the patient’s karyotype. Diagnosis Klinefelter syndrome with a 47,XXY karyotype. Management Testosterone replacement therapy was recommended, but the patient declined treatment. PMID:20957000

  20. The problem of insufficient incisal display: a case presentation.

    PubMed

    Castillo, Rodrigo

    2010-01-01

    Enhancement of facial beauty is one of the primary elective goals of patients seeking dental care. Frequently, improvements in natural beauty can be expected to follow restoration of ideal relationships between the denture and the facial soft tissues. A very important feature in a youthful appearance is the incisal tooth display; the amount of maxillary incisal exposure gradually decreases with age, accompanied by a gradual increase in mandibular incisal exposure. However, this problem could be present in young people where the effects of age should not be apparent yet. There are some other factors that could accelerate this process. The present case illustrates the improvement and rejuvenation of an unesthetic young smile through restorative treatment.

  1. Diagnosis problems in a case of ovarian tumor - case presentation.

    PubMed

    Albu, Dinu Florin; Albu, Cristina CrenguŢa; Văduva, Constantin Cristian; Niculescu, Mihaela; Edu, Antoine

    2016-01-01

    Ovarian epithelial tumors are the most common ovarian neoplasms, standing for more than half of all ovarian tumors. Borderline ovarian tumors represent a distinct group recognized by the World Health Organization (WHO), histologically distinct low ovarian carcinomas. They are tumors with low grade of malignancy with good progress and prognosis. The authors present a case of an ovarian tumor with diagnosis problems. It was the case of a 38-year-old patient with no genital pathological history, presenting hypogastric pain, dysmenorrhea, abdominal distension. The imaging performed examinations suggested an ovarian tumor with potential malignancy. The symptoms were nonspecific and the treatment was surgical. The piece was processed by paraffin inclusion and microscopically examined. Although the imaging examinations may be suggestive for potentially malignant lesions, the histopathological relation with the immunohistochemical one is the one that establishes the diagnosis. Following these examinations, there was established an ovarian borderline tumor. This is included in the lesions with low malignancy, the further evolution of the patient being a good one. The purpose of this presentation was the warning of the importance of histopathological examination linked with the immunohistochemical one, although the imaging may present lesions with malignancy criteria. Also, it was performed a literature review of borderline tumors in young women in terms of diagnosis and therapeutic conduct.

  2. Strategic Therapy When a Child Is Presented as the Problem

    ERIC Educational Resources Information Center

    Haley, Jay

    1973-01-01

    In attempting to deal with a child brought into the clinic because of a problem, the overriding question for the therapist is not so much what is the "true' or the "real' problem, but rather what approach will create the maximum therapeutic effect in the situation. (CS)

  3. Teaching Pharmacy Students Problem-Solving: Theory and Present Status.

    ERIC Educational Resources Information Center

    Jang, Raymond; Solad, Suzanne Wegener

    1990-01-01

    Two approaches for teaching a student how to define a problem, acquire pertinent data, generate possible solutions, and optimize them for the patient are described: guided design, originating in engineering education; and problem-based learning, which has roots in medical education. (Author/MLW)

  4. Future Problem Solving: Connecting the Present to the Future.

    ERIC Educational Resources Information Center

    Jackson, Jennine B.; Crandell, Lisa; Menhennett, Lorien

    To survive in the 21st century, today's student must develop the thinking skills necessary to adapt to a transforming world and learn how to be a creative problem solver. Future Problem Solving (FPS) prepares the student of today for tomorrow through an educational program that enables students to apply a constructive, deliberate process for…

  5. Past and present cosmic structure in the SDSS DR7 main sample

    SciTech Connect

    Jasche, J.; Leclercq, F.; Wandelt, B.D. E-mail: florent.leclercq@polytechnique.org

    2015-01-01

    We present a chrono-cosmography project, aiming at the inference of the four dimensional formation history of the observed large scale structure from its origin to the present epoch. To do so, we perform a full-scale Bayesian analysis of the northern galactic cap of the Sloan Digital Sky Survey (SDSS) Data Release 7 main galaxy sample, relying on a fully probabilistic, physical model of the non-linearly evolved density field. Besides inferring initial conditions from observations, our methodology naturally and accurately reconstructs non-linear features at the present epoch, such as walls and filaments, corresponding to high-order correlation functions generated by late-time structure formation. Our inference framework self-consistently accounts for typical observational systematic and statistical uncertainties such as noise, survey geometry and selection effects. We further account for luminosity dependent galaxy biases and automatic noise calibration within a fully Bayesian approach. As a result, this analysis provides highly-detailed and accurate reconstructions of the present density field on scales larger than ∼ 3 Mpc/h, constrained by SDSS observations. This approach also leads to the first quantitative inference of plausible formation histories of the dynamic large scale structure underlying the observed galaxy distribution. The results described in this work constitute the first full Bayesian non-linear analysis of the cosmic large scale structure with the demonstrated capability of uncertainty quantification. Some of these results will be made publicly available along with this work. The level of detail of inferred results and the high degree of control on observational uncertainties pave the path towards high precision chrono-cosmography, the subject of simultaneously studying the dynamics and the morphology of the inhomogeneous Universe.

  6. Booster main magnet power supply, present operation and potential future upgrades

    SciTech Connect

    Bajon, E.; Bannon, M.; Marneris, I.; Danowski, G.; Sandberg, J.; Savatteri, S.

    2011-03-28

    The Brookhaven Booster Main Magnet Power Supply (MMPS) is a 24 pulse thyristor control supply, rated at 5500 Amps, +/-2000 Volts, or 3000 Amps, +/-6000 Volts. The power supply is fed directly from the power utility and the peak magnet power is 18 MWatts. This peak power is seen directly at the incoming ac line. This power supply has been in operation for the last 18 years. This paper will describe the present topology and operation of the power supply, the feedback control system and the different modes of operation of the power supply. Since the power supply has been in operation for the last 18 years, upgrading this power supply is essential. A new power supply topology has been studied where energy is stored in capacitor banks. DC to DC converters are used to convert the dc voltage stored in the capacitor banks to pulsed DC voltage into the magnet load. This enables the average incoming power from the ac line to be constant while the peak magnet power is pulsed to +/- 18 MWatts. Simulations and waveforms of this power supply will be presented.

  7. An Unusual Aneurysm of the Main Pulmonary Artery Presenting as Acute Coronary Syndrome

    SciTech Connect

    Kholeif, Mona A.; El Tahir, Mohamed Kholeif, Yasser A.; El Watidy, Ahmed

    2006-10-15

    A 70-year old man presented with retrosternal chest pain. His electrocardiogram showed nonspecific T wave changes. Cardiac-specific troponin I (cTnI) was elevated. His condition was managed as acute coronary syndrome, following which he had two minor episodes of hemoptysis. A CT pulmonary angiogram showed no evidence of pulmonary embolism, but a large mass lesion was seen in the mediastinum. Echocardiography and cardiac MRI demonstrated a large solid mass, arising from the right ventricular outflow tract and causing compression of the main pulmonary artery (MPA). The differential diagnosis included pericardial and myocardial tumors and clotted aneurysm of the MPA. At surgery, a clotted aneurysmal sac was identified originating from the MPA and the defect was healed. Aneurysms of the MPA are rare. They most commonly present with dyspnea and chest pain. Compression of surrounding structures produces protean manifestations. A high index of suspicion coupled with imaging modalities establishes the diagnosis. Blunt trauma to the chest, at the time of an accident 4 years previously, may explain this aneurysm. The patient's presentation with chest pain was probably due to compression and/or stretching of surrounding structures. Coronary artery compression simulating acute coronary syndrome has been documented in the literature. The rise in cTnI may have been due to right ventricular strain, as a result of right ventricular outflow obstruction by the aneurysm. This has not been reported previously in the literature. The saccular morphology and narrow neck of the aneurysm predisposed to stagnation leading to clotting of the lumen and healing of the tear, which caused the diagnostic difficulty.

  8. THE EFFECT OF SEED TREATMENT ON THE MAIN PATHOGENS PRESENT IN WHEAT AGROECOSYSTEMS.

    PubMed

    Stef, R; Grozea, I; Puia, C; Carabet, A; Vlad, M; Manea, D

    2014-01-01

    Wheat crop (Triticum aestivum L.) from Poaceae family is affected by many diseases that cause yield losses. The present paper addresses a topic of economic, agrotechnics and social importance of wheat crop (occupying the first place among the Romanian cultivated crop, feeding 35 to 40% of world population). The study had as main objective product testing like Yunta 246 FS (imidacloprid 233 g/l + tebuconazol 13 g/l), Team Micorriza Plus (Glomus intraradices 150 spore/g + Glomus mosseae 150 spore/g + organic matter 56% and Rhizosphere Bacteria 107 UFC/g) and Condor (Trichoderma spp. 1 x 109 spore/g + Glomus sp. 10 spore/g + Rhizosphere Bacteria 1 x 107 UFC/g and organic matter 7%) applied in the pathosystem wheat/pathogens. The research was conducted in the western part of Romania, in 2010-2012, experience was placed after Latin rectangle method with 10 variants (they are different by product and dose applied) and the data were statistically interpreted. Results showed the presence of pathogens Septoria tritici, Drechslera tritici repentis and Drechslera teres in experimental variants. Statistical analysis showed that the most effective chemical mixture was imidacloprid + tebuconazol at the highest dose tested (3 l/t). Regarding the non-chemical product testing, the product Condor gave positive results. The highest values of quality parameters (protein and gluten) were obtained in the variants treated with Yunta 246 FS.

  9. The main problems of parents of a child with epidermolysis bullosa.

    PubMed

    van Scheppingen, Corinne; Lettinga, Ant T; Duipmans, José C; Maathuis, Karel G B; Jonkman, Marcel F

    2008-04-01

    Epidermolysis Bullosa (EB) is a rare genetic blistering-skin disorder with varying degrees of severity, ranging from mild forms to severe forms, with chronic progression. The aim of this study was to identify and specify the problems of parents of a child with EB. Qualitative research methodology was used, comprising a series of semistructured interviews with eleven families. The key problems of parents were broken down into three themes, related to the child, the family, and the care providers. These themes comprised nine categories, including (1) the child being different, (2) the child suffering pain, (3) feelings of uncertainty, (4) restrictions on employment and leisure time, (5) difficulties in organization of care, (6) never being off-duty, (7) family problems, (8) ignorance and lack of skills of care providers, and (9) resistance to difficult care. Despite the great variance in clinical pictures of the different (sub)types of EB, the main problems parents experienced appear quite similar. However, the problems did appear to differ in extensiveness, intensity, and gravity.

  10. Analysis of a Perturbation Solution of the Main Problem in Artificial Satellite Theory

    DTIC Science & Technology

    1990-09-01

    NAVAL POSTGRADUATE SCHOOL Monterey, California "".NrM DTic N~ ELECTE 𔃻 OCT 3 1991 jVSTArZS 4 CJADXU’J THESIS ANALYSIS OF A PERTURBATION SOLUTION OF...THE MAIN PROBLEM IN ARTIFICIAL SATELLITE TH’IEORY by Scott David Krambeck September 1990 Thesis Advisor Donald A. Danielson Approved for public...Date of Report (year, month, day) 15 Page Count Engneer’s Thesis From To September 1990 142 16 Supplementary Notation The views expressed in this

  11. Problem based review: the patient presenting with hyponatraemia.

    PubMed

    Saeed, M; Ahmad, S; Hayat, A; Saeed, S

    2014-01-01

    Hyponatraemia is the most common electrolyte anomaly and is associated with significant morbidity and mortality. Patients with severe hyponatraemia often present to acute medical units with non-specific symptoms which can progress to overt neurological manifestations. There are many causes of hyponatriaemia, the most common being drug-induced causes, particularly thiazide diuretics, and the Syndrome of Inappropriate ADH Secretion (SIADH). Initial assessment should include a careful evaluation of the patient's volume status, which helps to identify the most likely cause. This article utilises a recent case which presented to our AMU to illustrate the importance of a careful and systematic assessment of patients presenting to hospital with hyponatraemia. The new vasopressin receptor antagonists are explored as an option for the management of severe hyponatraemia.

  12. [Nosographic and psychodynamic problems of autoeviration. Presentation of 5 cases].

    PubMed

    Galassi, F; Bellini, M; Cabras, P L; La Malfa, G P

    1989-01-01

    After a review of literature data about autoeviration, with a particular interest in the proposed diagnostic criteria, 5 cases observed in Tuscany in the last twenty years are presented. Five patients had a diagnosis of schizophrenia, with the presence of command auditory hallucinations. The presence of schizophrenic patients confirms the literature data. The Authors underline, on the other hand, the presence in their group of patients who express ideas of guilt which can be connected with sexual transgression; cases of this kind could therefore be an ideal model for the clinical and psychopathological study of psychotic, affective and dissociative symptom integration. In the second part having underlined the difficulties of this kind of research because of the disturbing characteristics of this kind of conduct, diagnostic criteria and some aspects of the psychiatric disorders are presented. The Authors emphasize the importance of a wider interest in this kind of cases particularly regarding the patient's personal history and his family dynamics.

  13. Preventing delayed diagnosis of cancer: clinicians’ views on main problems and solutions

    PubMed Central

    Car, Lorainne Tudor; Papachristou, Nikolaos; Urch, Catherine; Majeed, Azeem; El–Khatib, Mona; Aylin, Paul; Atun, Rifat; Car, Josip; Vincent, Charles

    2016-01-01

    Background Delayed diagnosis is a major contributing factor to the UK’s lower cancer survival compared to many European countries. In the UK, there is a significant national variation in early cancer diagnosis. Healthcare providers can offer an insight into local priorities for timely cancer diagnosis. In this study, we aimed to identify the main problems and solutions relating to delay cancer diagnosis according to cancer care clinicians. Methods We developed and implemented a new priority–setting approach called PRIORITIZE and invited North West London cancer care clinicians to identify and prioritize main causes for and solutions to delayed diagnosis of cancer care. Results Clinicians identified a number of concrete problems and solutions relating to delayed diagnosis of cancer. Raising public awareness, patient education as well as better access to specialist care and diagnostic testing were seen as the highest priorities. The identified suggestions focused mostly on the delays during referrals from primary to secondary care. Conclusions Many identified priorities were feasible, affordable and converged around common themes such as public awareness, care continuity and length of consultation. As a timely, proactive and scalable priority–setting approach, PRIORITZE could be implemented as a routine preventative system for determining patient safety issues by frontline staff. PMID:28028437

  14. Present status of research activities relating global warming problems in Japan (mainly MITI and relating organizations)

    SciTech Connect

    Yokoyama, O.

    1993-12-31

    Japanese government has issued action program so called {open_quotes}Action Program to Arrest Global Warming{close_quotes} for preventing global warming at Oct., 1990. According to the program, CO{sub 2} emission should be stabilized on a per capita basis in the year 2000 and beyond at about same level as in 2000 by introducing several methods such as energy conservation, improvement of energy using efficiency, expanding use of renewable energy and so on. The basic concept, target and methods are summarized. At the same time, MITI published so called {open_quotes}New Earth 21{close_quotes} project which aims remedying the earth environment modified by human activities since industrial innovation began at about 200 years ago in coming 100 years. This plan proposed yearly step of research development of technology for mitigating CO{sub 2} emission. According to the MITI`s plan, 15 institutions belonging to AIST have carrying research for developing technology of reducing emission of CO{sub 2} and other greenhouse gases, with cooperation of other research organizations such as RITE (research Institute of Innovative Technology for Earth) and NEDO (New Energy and Industrial Technology Developing Organization). Time schedule of the research development by The New Earth 21 project is summarized in Table 2. Now, in Japan, many national institutions and universities, research works relating reduction and mitigation of GHG are carried out according to this guideline.

  15. The main problems in the mechanical engineering sector and some possible directions of their solution

    NASA Astrophysics Data System (ADS)

    Strizhakova, E.

    2016-04-01

    The article shows the problems of the sector of mechanical engineering in the industrial system in Russia. The author's method of estimating the relative level of risk and the method of determining the de-industrialization degree of the sector based on the aggregated level of adaptability are given. According to them we have analysed the key indicators, such as basic, developed and advanced technologies, and investments in an old or new technology of industrial sectors. The main directions of the impact of industrial policy allowing a change in the current situation in mechanical engineering are given. The results can be applied in practice in formation of directions and actual control actions to improve the overall efficiency of mechanical engineering industry.

  16. Late glacial history of central Aroostook County, Maine: The younger Dryas problem

    SciTech Connect

    Ashley, K.; Borns, H.W. Jr. . Inst. for Quaternary Studies)

    1993-03-01

    Previous work in Nova Scotia and New Brunswick, Canada has proven that a late-glacial climatic oscillation expressed itself in North America. Despite physical and palynological evidence in Canada for an event centered on the Alleroed-Younger Dryas chronozones, little conclusive evidence has been found for an equivalent oscillation in Maine. The only physical evidence for an Alleroed-Younger Dryas event so far in Maine is a deformed peat layer within a diamicton near Oxbow. Newman et al. reported ages on the peat ranging from 10,395 [plus minus] 85 to 11,760 [plus minus] 145 [sup 14]C yrs B.P. New excavation of the site in 1992 did not reveal the peat. Newman et al. reported a strong NNW-SSE stone fabric in the diamicton, which is consistent with regional flow directions and suggests that the diamicton may be a till. Regional basal organic [sup 14]C dates suggest that the area was ice-free by Younger Dryas time. The authors strategy for trying to solve this problem has been to investigate the stratigraphy of the Oxbow region, in conjunction with ice-flow directions as determined by bedrock striae and till fabrics. Ongoing fieldwork has shown that the direction of strongest bedrock erosion records a Late-Wisconsin ice flow event which occurred along a mean trend of s26E, based on 261 striation measurements at 36 localities. The NNW-SSE-trending striae cross-cut a W-E set at some localities. Faint striation sets which cross-cut the NNW-SSE-trending striae have no consistent orientation. This is in agreement with the striation data. A major drag fold found at the contact between the surface till and underlying gravel also indicates ice flow from the NNW (fold axis trend:s66W). The surface till has not been dated directly. The genesis of the diamicton at Oxbow and its relationship to the regional surface till remains unclear.

  17. The Effectiveness of Textbook, Student Generated, and Pictorial Versions of Presenting Mathematical Problems.

    ERIC Educational Resources Information Center

    Kulm, Gerald; And Others

    The study sought to determine the relationship between problem solving ability and problem presentation stimuli of textbook (T), student generated (S), pictorial (P), textbook and pictorial (TP), and student generated and pictorial (SP). Ten problems for each stimulus were presented to ninth grade algebra students randomly assigned within IQ…

  18. Main Ideas in Best-Sellers: A New Look at an Old Problem.

    ERIC Educational Resources Information Center

    O'Hear, Michael F.; Aikman, Carol C.

    1996-01-01

    Examines existence and placement of main ideas in non-fiction best-sellers. Concludes that writers of popular non-fiction use main ideas and place these ideas in prominent positions. Offers support for teaching main idea in reading classes. (RS)

  19. Main animal welfare problems in ruminant livestock during preslaughter operations: a South American view.

    PubMed

    Gallo, C B; Huertas, S M

    2016-02-01

    Animals destined for meat production are usually exposed to many stressful conditions during production and particularly during preslaughter operations. Handling animals on farm, loading into and unloading from vehicles, transportation, passing through livestock markets, fasting, lairage and stunning can all affect their welfare. How badly welfare can be affected will depend on both the intrinsic factors of the specific type of animal involved and the extrinsic factors of the environment where those animals live or are being handled, including the animal handlers. In South America (SA), it has been part of a strategy for improving animal welfare (AW) to address not only ethical aspects, but to emphasize the close relationship existing between handling ruminants preslaughter and the quantity and quality of the meat they produce. This has resulted not only in improvements in AW, but has also brought economic rewards to producers which in turn can lead to higher incomes for them and hence better human welfare. For producers with a high number of animals, considering AW during production and preslaughter operations can determine the possibility of exporting and/or getting better prices for their products. At smallfarmer level, particularly in some less developed countries, where human welfare is impaired, using this strategy together with education has also been relevant. It is important that education and training in AW are done not only considering global knowledge, but also including specific geographical and climatic characteristics of each country and the cultural, religious and socio-economical characteristics of its people; therefore, research within the context of each country or region becomes relevant. The aim of this review was to show the results of research dealing with AW of ruminant livestock in Chile and some other SA countries. Some of the main problems encountered are related to lack of proper infrastructure to handle animals; long distance transport

  20. Solution of the main problem of the lunar physical libration by a numerical method

    NASA Astrophysics Data System (ADS)

    Zagidullin, Arthur; Petrova, Natalia; Nefediev, Yurii

    2016-10-01

    Series of the lunar programs requires highly accurate ephemeris of the Moon at any given time. In the light of the new requirements on the accuracy the requirements to the lunar physical libration theory increase.At the Kazan University there is the experience of constructing the lunar rotation theory in the analytical approach. Analytical theory is very informative in terms of the interpretation of the observed data, but inferior to the accuracy of numerical theories. The most accurate numerical ephemeris of the Moon is by far the ephemeris DE430 / 431 built in the USA. It takes into account a large number of subtle effects both in external perturbations of the Moon, and in its internal structure. Before the Russian scientists the task is to create its own numerical theory that would be consistent with the American ephemeris. On the other hand, even the practical application of the american ephemeris requires a deep understanding of the principles of their construction and the intelligent application.As the first step, we constructed a theory in the framework of the main problem. Because we compare our theory with the analytical theory of Petrova (1996), all the constants and the theory of orbital motion are taken identical to the analytical theory. The maximum precision, which the model can provide is 0.01 seconds of arc, which is insufficient to meet the accuracy of modern observations, but this model provides the necessary basis for further development.We have constructed the system of the libration equations, for which the numerical integrator was developed. The internal accuracy of the software integrator is several nanoseconds. When compared with the data of Petrova the differences of order of 1 second are observed at the resonant frequencies. The reason, we believe, in the inaccuracy of the analytical theory. We carried out a comparison with the Eroshkin's data [2], which gave satisfactory agreement, and with Rambaux data. In the latter case, as expected

  1. Manipulation of Numerical Presentation in Verbal Problems and Its Effect on Berbal Problem Solving Among EMH Childrem

    ERIC Educational Resources Information Center

    Thibodeau, Gerard P.

    1974-01-01

    Investigated were the effects of numerical presentation, set language, and distractor position on the arithmetic problem solving abilities of 24 educable mentally handicapped children (mean age 13 years). (Author/DB)

  2. Tackling five main problem areas found in science (ground segment) project developments

    NASA Astrophysics Data System (ADS)

    Lock, T.; Pérez-López, F.

    2014-08-01

    Science projects which require a large software development may use many scientists alongside a few professional software engineers. Such projects tend to show extreme cases of the general problems associated with software developments. After introducing an example of a large software development in a science project, the importance of a development management plan will be emphasised and sections of the plan highlighted and it is explained how these sections address and prepare for the expected problems throughout the life of the project. A positive, strongly proactive quality assurance, QA, approach is the common theme throughout. The role of QA is, therefore, more to guide, support and advise all members of the team rather than only to detect and react to problems. The top five problem areas addressed are: 1. Vague, late and missing requirements. 2. Few professional software engineers in a large software development. 3. A lack of testers with an appropriate test mentality. 4. Quality Assurance people cannot be everywhere, nor have in-depth skills in every subject. 5. Scientists will want to start coding and see writing documents as a waste of their time.

  3. Dissociation of past and present experience in problem solving using a virtual environment.

    PubMed

    Sturz, Bradley R; Bodily, Kent D; Katz, Jeffrey S

    2009-02-01

    An interactive 3D desktop virtual environment task was created to investigate learning mechanisms in human problem solving. Participants were assessed for previous video game experience, divided into two groups (Training and Control), and matched for gender and experience. The Training group learned specific skills within the virtual environment before being presented a problem. The Control group was presented the problem only. Completion time was faster for the Training group and was affected by level of previous video game experience. Results indicated problem solving was a function of specific and general experience and demonstrated a method for dissociating these two facets of experience.

  4. Association of Chronic Pancreatitis and Malignant Main Duct IPMN: A Rare but Difficult Clinical Problem.

    PubMed

    Berger, Zoltán; De La Fuente, Hernán; Meneses, Manuel; Matamala, Fernanda; Sepúlveda, Makarena; Rojas, Claudia

    2017-01-01

    We report the case of a 70-year-old woman who consulted for recurrent short episodes of mild-to-moderate abdominal pain. Dilated main pancreatic duct was seen on CAT scan and magnetic resonance, with multiple calcifications and intraductal stones, typical in CP. However, for a more pronounced cystic dilatation in the pancreatic head, we could not exclude the coexistence of a main duct IPMN. ERCP was performed, with pancreatic sphincterotomy and extraction of pancreatic stones, but, at the same time, mucin extrusion was seen from the dilated duct through the papilla. Pancreatoduodenectomy was performed. Surgery and histology confirmed malignant IPMN with the typical image of chronic pancreatitis and intraductal stones in the vicinity. The patient is doing well 4 years after the surgery, without recurrence of the malignant disease, with changes of chronic pancreatitis in the pancreatic remnant. This paper discusses the possible relationships between the two entities and emphasizes the need of differential diagnosis.

  5. Association of Chronic Pancreatitis and Malignant Main Duct IPMN: A Rare but Difficult Clinical Problem

    PubMed Central

    De La Fuente, Hernán; Meneses, Manuel; Matamala, Fernanda; Sepúlveda, Makarena; Rojas, Claudia

    2017-01-01

    We report the case of a 70-year-old woman who consulted for recurrent short episodes of mild-to-moderate abdominal pain. Dilated main pancreatic duct was seen on CAT scan and magnetic resonance, with multiple calcifications and intraductal stones, typical in CP. However, for a more pronounced cystic dilatation in the pancreatic head, we could not exclude the coexistence of a main duct IPMN. ERCP was performed, with pancreatic sphincterotomy and extraction of pancreatic stones, but, at the same time, mucin extrusion was seen from the dilated duct through the papilla. Pancreatoduodenectomy was performed. Surgery and histology confirmed malignant IPMN with the typical image of chronic pancreatitis and intraductal stones in the vicinity. The patient is doing well 4 years after the surgery, without recurrence of the malignant disease, with changes of chronic pancreatitis in the pancreatic remnant. This paper discusses the possible relationships between the two entities and emphasizes the need of differential diagnosis. PMID:28321347

  6. Human Performance on Visually Presented Traveling Salesperson Problems with Varying Numbers of Nodes

    ERIC Educational Resources Information Center

    Dry, Matthew; Lee, Michael D.; Vickers, Douglas; Hughes, Peter

    2006-01-01

    We investigated the properties of the distribution of human solution times for Traveling Salesperson Problems (TSPs) with increasing numbers of nodes. New experimental data are presented that measure solution times for carefully chosen representative problems with 10, 20, . . . 120 nodes. We compared the solution times predicted by the convex hull…

  7. Unsolved Problems for Main-Sequence Variable Stars Revealed by the NASA Kepler Data (Abstract)

    NASA Astrophysics Data System (ADS)

    Guzik, J. A.

    2016-12-01

    (Abstract only) The NASA Kepler spacecraft's long time-series photometric data have enabled interesting studies of g Doradus, delta Scuti, slowly-pulsating B, and beta Cephei variable stars by revealing many new variables and characterizing frequencies and amplitudes to high precision. These stars pulsate in multiple nonradial modes, with periods of hours to days.We will discuss some questions that the Kepler data have raised and are helping to solve, including: Why have so many "hybrid" g Dor/delta Sct variables been discovered? Why are there apparently "constant" non-pulsating stars within the pulsation instability regions? What are the causes of amplitude variations that occur over relatively short timescales? Can we find patterns in the frequencies and amplitude spectra that will help with mode identification and facilitate asteroseismology? Are large increases in the opacities used for stellar models needed to explain the B-type pulsators and to solve the "solar abundance problem"?

  8. Rhizobial position as a main determinant in the problem of competition for nodulation in soybean.

    PubMed

    López-García, Silvina L; Vázquez, Tirso E E; Favelukes, Gabriel; Lodeiro, Aníbal R

    2002-04-01

    Selected Bradyrhizobium japonicum strains inoculated on soybean seeds often fail to occupy a significant proportion of nodules when a competitor rhizobial population is established in the soil. This competition problem could result from a genetic/ physiological advantage of the adapted soil population over the introduced inoculant or from a positional advantage, as the soil population already occupies the soil profile where the roots will penetrate, whereas the inoculant remains concentrated around the seeds. Here, we have assessed the contribution of these factors with a laboratory model in which a rhizobial population is established in sterile vermiculite. We observed that the wild-type strain B. japonicum LP 3004 was able to grow in pots with N-free plant nutrient solution-watered vermiculite for six or seven generations with a duplication rate of at least 0.7 day(-1). In addition, the rhizobial population persisted for 3 months with 10(6)-10(7) colony-forming units ml(-1) of the vermiculite-retained solution. N-starved, young rhizobial cultures are more efficient in performing several steps along their early association with soybean roots. However, N starvation during growth of rhizobia used for seed inoculation did not enhance their competitiveness against a 1 month vermiculite-established rhizobial population, which occupied more than 72% of the nodules. When a similarly established rhizobial population was recovered from the vermiculite and homogeneously suspended in plant nutrient solution, these cells were significantly less competitive (29% of nodules occupied) than rhizobia obtained from a fresh, logarithmic culture in a N-poor minimal medium, thus indicating that cell position rather than intrinsic competitiveness was the determinant for nodule occupation.

  9. A Methodology for Multidisciplinary Decision Making for a Surface Combatant Main Engine Selection Problem

    DTIC Science & Technology

    2014-06-01

    Hyperbolic equation form 0 1 0 1 1 1 ( )y z a a x linear a a x y = → = = + → + (3.3) (4) Polynomial equation form 20 1 2 ...y a a x a x= + + + (3.4...the curved function of the original variables can be expressed as a linear function of our new variables . This is how we transform the equation ...function of our new variables . So we can start with the linearization of the predicted equation presented in Equation (3.8) by taking the

  10. The main characteristics, problems, and prospects for Western European coastal seas.

    PubMed

    Dauvin, Jean-Claude

    2008-01-01

    Located to the far West of Western Europe, France has a western maritime coastal zone of more than 3800 km, which is widely influenced by the North-eastern Atlantic. The English Channel, an epi-continental shallow sea with very strong tides, runs along 650 km of the French coast and 1100 km of the English coast. It is also a bio-geographical crossroad encompassing a much wider range of ecological conditions than other European seas. France's Atlantic coast north of the Gironde estuary is a succession of rocky and sandy shorelines, including a sizeable intertidal zone, a wide continental shelf, and two major estuaries (Loire and Gironde). South of the Gironde, the 260 km of coastline is low, sandy and straight, with a narrowing continental shelf further on South due to the presence of the Cape Breton canyon in the bathyal and abyssal zones. Interface between the continental and oceanic systems, these bordering seas--North Sea, English Channel and Atlantic Ocean--have been the subject of many recent research programmes (the European Mast-FLUXMANCHE and INTERREG programmes; the national coastal environment programme and the LITEAU programme in France), designed to improve comprehension of the functions, production, and dynamics of these seas as well as their future evolution. Given the many conflicting practices in these littoral zones, integrated coastal zone management appears to be essential in order to cope with both natural phenomena, such as the infilling of estuarine zones, cliff erosion, and rising sea levels, and chronic anthropogenic pressures, such as new harbour installations (container dikes, marinas), sea aggregate extraction for human constructions, and offshore wind mill farms. This article provides as complete an overview as possible of the research projects on these bordering seas, both those that have recently been accomplished and those that are currently in progress, in order to highlight the main characteristics of these ecosystems and to

  11. Computer-Presented Organizational/Memory Aids as Instruction for Solving Pico-Fomi Problems.

    ERIC Educational Resources Information Center

    Steinberg, Esther R.; And Others

    1985-01-01

    Describes investigation of effectiveness of computer-presented organizational/memory aids (matrix and verbal charts controlled by computer or learner) as instructional technique for solving Pico-Fomi problems, and the acquisition of deductive inference rules when such aids are present. Results indicate chart use control should be adapted to…

  12. A Composite Case Study of an Individual with Anger as a Presenting Problem

    ERIC Educational Resources Information Center

    Santanello, Andrew P.

    2011-01-01

    This article presents a composite case study of a 45-year-old Caucasian male with anger as a presenting problem. Mr. P is technically self-referred but admits that he ultimately decided to seek treatment at his girlfriend's insistence. He reports experiencing frequent, intense anger episodes, usually occasioned by minor inconveniences. These anger…

  13. Revisiting "Education and Our Present Social Problems": What Would John Dewey Say Today?

    ERIC Educational Resources Information Center

    Romano, Rosalie M.

    2006-01-01

    In 1933, Dewey presented a speech in which he linked democracy, social class, and teacher activism as integral factors when addressing educational issues. This article argues that those issues include social issues as well. It examines democracy, social class, and present problems in the preparation of teachers, organized around the 1933 questions…

  14. The Problem of Hipparcos Distances to Open Clusters. Report 1; Constraints from Multicolor a Main-Sequence Fitting

    NASA Technical Reports Server (NTRS)

    Pinsonneault, Marc H.; Stauffer, John; Soderblom, David R.; King, Jeremy R.; Hanson, Robert B.

    1998-01-01

    Parallax data from the Hipparcos mission allow the direct distance to open clusters to be compared with the distance inferred from main-sequence (MS) fitting. There are surprising differences between the two distance measurements. indicating either the need for changes in the cluster compositions or reddening, underlying problems with the technique of MS fitting, or systematic errors in the Hipparcos parallaxes at the 1 mas level. We examine the different possibilities, focusing on MS fitting in both metallicity-sensitive B-V and metallicity-insensitive V-I for five well-studied systems (the Hyades, Pleiades, alpha Per, Praesepe, and Coma Ber). The Hipparcos distances to the Hyades and alpha Per are within 1 sigma of the MS-fitting distance in B-V and V-I, while the Hipparcos distances to Coma Ber and the Pleiades are in disagreement with the MS-fitting distance at more than the 3 sigma level. There are two Hipparcos measurements of the distance to Praesepe; one is in good agreement with the MS-fitting distance and the other disagrees at the 2 sigma level. The distance estimates from the different colors are in conflict with one another for Coma but in agreement for the Pleiades. Changes in the relative cluster metal abundances, age related effects, helium, and reddening are shown to be unlikely to explain the puzzling behavior of the Pleiades. We present evidence for spatially dependent systematic errors at the 1 mas level in the parallaxes of Pleiades stars. The implications of this result are discussed.

  15. Authors report lack of time as main reason for unpublished research presented at biomedical conferences: a systematic review

    PubMed Central

    Scherer, Roberta W.; Ugarte-Gil, Cesar; Schmucker, Christine; Meerpohl, Joerg J.

    2015-01-01

    Objective To systematically review reports that queried abstract authors about reasons for not subsequently publishing abstract results as full length articles. Study Design and setting Systematic review of Medline, EMBASE, The Cochrane Library, ISI Web of Science and study bibliographies for empirical studies in which investigators examined subsequent full publication of results presented at a biomedical conference and reasons for non-publication. Results The mean full publication rate was 55.9% (95% CI, 54.8% to 56.9%) for 24 of 27 eligible reports providing this information, and 73.0% (95% CI, 71.2% to 74.7%) for 7 reports of abstracts describing clinical trials. 24 studies itemized 1,831 reasons for non-publication, and 6 itemized 428 reasons considered the most important reason. Lack of time was the most frequently reported reason (weighted average = 30.2% (95% CI, 27.9% to 32.4%)) and the most important reason (weighted average = 38.4% (95% CI, 33.7% to 43.2%)). Other commonly stated reasons were lack of time and/or resources, publication not an aim, low priority, incomplete study and trouble with co-authors. Conclusions Across medical specialties, the main reasons for not subsequently publishing an abstract in full lies with factors related to the abstract author rather than with journals. PMID:25797837

  16. Lithium evolution from Pre-Main Sequence to the Spite plateau: an environmental solution to the cosmological lithium problem

    NASA Astrophysics Data System (ADS)

    Fu, Xiaoting; Bressan, Alessandro; Molaro, Paolo; Marigo, Paola

    2016-08-01

    Lithium abundance derived in metal-poor main sequence stars is about three times lower than the primordial value of the standard Big Bang nucleosynthesis prediction. This disagreement is referred to as the lithium problem. We reconsider the stellar Li evolution from the pre-main sequence to the end of main sequence phase by introducing the effects of overshooting and residual mass accretion. We show that 7Li could be significantly depleted by convective overshooting in the pre-main sequence phase and then partially restored in the stellar atmosphere by residual accretion which follows the Li depletion phase and could be regulated by EUV photo-evaporation. By considering the conventional nuclear burning and diffusion along the main sequence we can reproduce the Spite plateau for stars with initial mass m 0=0.62-0.80 M ⊙, and the Li declining branch for lower mass dwarfs, e.g, m 0=0.57-0.60 M ⊙, for a wide range of metallicities (Z=0.00001 to Z=0.0005), starting from an initial Li abundance A(Li) = 2.72.

  17. Visual, Algebraic and Mixed Strategies in Visually Presented Linear Programming Problems.

    ERIC Educational Resources Information Center

    Shama, Gilli; Dreyfus, Tommy

    1994-01-01

    Identified and classified solution strategies of (n=49) 10th-grade students who were presented with linear programming problems in a predominantly visual setting in the form of a computerized game. Visual strategies were developed more frequently than either algebraic or mixed strategies. Appendix includes questionnaires. (Contains 11 references.)…

  18. Basic Writing's Past, Present, and Future: A Discussion of Problems and Possibilities.

    ERIC Educational Resources Information Center

    Gray-Rosendale, Laura; Baca, Kathleen; Meyers, Alan; Uehling, Karen; Adler-Kassner, Linda; Harrington, Susanmarie; Reynolds, Tom

    2001-01-01

    Presents a conversation that is designed to get at the differences in definitions of basic writing across institutional boundaries, divergences in placement procedures and assessment mechanisms, and problems theoretical work has had historically in tackling the issues of central importance to educators and their students. Concludes with…

  19. Clinical perception: a study of intimate partner violence versus methamphetamine use as presenting problems.

    PubMed

    Fussell, Holly; Haaken, Janice; Lewy, Colleen S; McFarland, Bentson H

    2009-01-01

    This study draws on theory by Solomon Asch (1946, 1952) to examine how presenting with intimate partner violence versus methamphetamine use shapes characteristics of substance abuse assessment interviews. When responding to an initial open-ended question from a substance abuse counselor, the methamphetamine user and intimate partner violence survivor may elicit very different reactions from the counselor. We predicted that these differing presenting problems would initiate different trajectories for overall impression formation. To test this hypothesis, 18 substance abuse practitioners interviewed one standardized patient (an actor portraying a substance abuse client) who alternated her presenting problem between a) violence in a domestic setting and b) methamphetamine use. The remainder of her story was identical for counselors in either presenting problem group. Results included differences between the two groups in median length of the interviews and failure of both groups to explore domestic violence as a cooccurring problem. Clinical practices related to substance abuse counseling and intimate partner violence are discussed in light of these findings.

  20. NASA Conference on Aircraft Operating Problems: A Compilation of the Papers Presented

    NASA Technical Reports Server (NTRS)

    1965-01-01

    This compilation includes papers presented at the NASA Conference on Aircraft Operating Problems held at the Langley Research Center on May 10 - 12, 1965. Contributions were made by representatives of the Ames Research Center, the Flight Research Center, end the Langley Research Center of NASA, as well as by representatives of the Federal Aviation Agency.

  1. [Bolivia: some serious socio-demographic problems. A presentation of some recent data].

    PubMed

    Gutierrez, H; Heran, F

    1981-01-01

    The authors use the first definitive results from the 1976 census and data from a 1975 survey of 10,000 households undertaken by the Centro Latinoamericano de Demografia (CELADE) to present an overview of the current demographic situation in Bolivia. Consideration is given to the difficulties involved in obtaining demographic data in Bolivia, the problems of low population density and uneven distribution, high fertility, high infant mortality, and the problem of linguistic and ethnic divisions. Some consideration is also given to migration and labor force developments.

  2. NACA Conference on Some Problems of Aircraft Operation: A Compilation of the Papers Presented

    NASA Technical Reports Server (NTRS)

    1950-01-01

    This volume contains copies of the technical papers presented at the NACA Conference on Some Problems of Aircraft Operation on October 9 and 10, 1950 at the Lewis Flight Propulsion Laboratory. This conference was attended by members of the aircraft industry and military services. The original presentation and this record are considered as complementary to, rather than as substitutes for, the Committee's system of complete and formal reports. A list of the conferees is included. [Contents include four subject areas: Atmospheric Turbulence and its Effect on Aircraft Operation; Some Aspects of Aircraft Safety - Icing, Ditching and Fire; Aerodynamic Considerations for High-Speed Transport Airplanes; Propulsion Considerations for High-Speed Transport Airplanes.

  3. Quantitative optical coherence elastography as an inverse elasticity problem (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Dong, Li; Wijesinghe, Philip; Dantuono, James T.; Sampson, David D.; Munro, Peter R. T.; Kennedy, Brendan F.; Oberai, Assad A.

    2016-03-01

    Quantitative elasticity imaging, which retrieves elastic modulus maps from tissue, is preferred to qualitative strain imaging for acquiring system- and operator-independent images and longitudinal and multi-site diagnoses. Quantitative elasticity imaging has already been demonstrated in optical elastography by relating surface-acoustic and shear wave speed to Young's modulus via a simple algebraic relationship. Such approaches assume largely homogeneous samples and neglect the effect of boundary conditions. We present a general approach to quantitative elasticity imaging based upon the solution of the inverse elasticity problem using an iterative technique and apply it to compression optical coherence elastography. The inverse problem is one of finding the distribution of Young's modulus within a sample, that in response to an applied load, and a given displacement and traction boundary conditions, can produce a displacement field matching one measured in experiment. Key to our solution of the inverse elasticity problem is the use of the adjoint equations that allow the very efficient evaluation of the gradient of the objective function to be minimized with respect to the unknown values of Young's modulus within the sample. Although we present the approach for the case of linear elastic, isotropic, incompressible solids, this method can be employed for arbitrarily complex mechanical models. We present the details of the method and quantitative elastograms of phantoms and tissues. We demonstrate that by using the inverse approach, we can decouple the artefacts produced by mechanical tissue heterogeneity from the true distribution of Young's modulus, which are often evident in techniques that employ first-order algebraic relationships.

  4. Hodgkin's disease presenting as a cholestatic febrile illness: incidence and main characteristics in a series of 421 patients.

    PubMed

    Cervantes, F; Briones, J; Bruguera, M; Font, C; Grau, J M; Rozman, C; Montserrat, E

    1996-06-01

    In order to determine the frequency and characteristics of patients with liver abnormalities as the presenting manifestation of Hodgkin's disease (HD), 421 consecutive HD patients were studied. Six patients in the series (1.4%) presented with liver abnormalities that led to of a liver biopsy and the subsequent diagnosis of HD. All had fever prior to HD diagnosis, four frank jaundice, and one hepatic failure. No patient had pruritus. Moderate hepatomegaly was present in four patients. Cholestasis was observed in all cases; in most patients a moderate increase in the transaminase activity was also seen. Two patients had a mild rise in the serum LDH, four had leukopenia, and one eosinophilia. At liver histologic study, Reed-Sternberg cells were demonstrated in four patients; in the remaining two, the presence of atypical histiocytes, lymphocytes, and eosinophils was highly suggestive of HD, the latter diagnosis being confirmed by subsequent study of bone marrow and/or retroperitoneal lymphadenopathies. In three of the six patients, HD was not demonstrated in sites other than the liver. Three patients older than 60 years died shortly after HD diagnosis. By contrast, three patients younger than 40 years showed a dramatic response to chemotherapy: two of them had a further relapse, and one is considered cured after 14 years of continuous remission. Liver disease constitutes an infrequent form of HD presentation which must be included in the differential diagnosis of any patient with fever of unknown origin.

  5. From Shuttle Main Engine to the Human Heart: A Presentation to the Federal Lab Consortium for Technology Transfer

    NASA Technical Reports Server (NTRS)

    Fogarty, Jennifer A.

    2010-01-01

    A NASA engineer received a heart transplant performed by Drs. DeBakey and Noon after suffering a serious heart attack. 6 months later that engineer returned to work at NASA determined to use space technology to help people with heart disease. A relationship between NASA and Drs. DeBakey and Noon was formed and the group worked to develop a low cost, low power implantable ventricular assist device (VAD). NASA patented the method to reduce pumping damage to red blood cells and the design of a continuous flow heart pump (#5,678,306 and #5,947,892). The technology and methodology were licensed exclusively to MicroMed Technology, Inc.. In late 1998 MicroMed received international quality and electronic certifications and began clinical trials in Europe. Ventricular assist devices were developed to bridge the gap between heart failure and transplant. Early devices were cumbersome, damaged red blood cells, and increased the risk of developing dangerous blood clots. Application emerged from NASA turbopump technology and computational fluid dynamics analysis capabilities. To develop the high performance required of the Space Shuttle main engines, NASA pushed the state of the art in the technology of turbopump design. NASA supercomputers and computational fluid dynamics software developed for use in the modeling analysis of fuel and oxidizer flow through rocket engines was used in the miniaturization and optimization of a very small heart pump. Approximately 5 million people worldwide suffer from chronic heart failure at a cost of 40 billion dollars In the US, more than 5000 people are on the transplant list and less than 3000 transplants are performed each year due to the lack of donors. The success of ventricular assist devices has led to an application as a therapeutic destination as well as a bridge to transplant. This success has been attributed to smaller size, improved efficiency, and reduced complications such as the formation of blood clots and infection.

  6. Drawing helps children to talk about their presenting problems during a mental health assessment.

    PubMed

    Woolford, Junie; Patterson, Tess; Macleod, Emily; Hobbs, Linda; Hayne, Harlene

    2015-01-01

    When children require mental health services, clinicians need to conduct assessments that are developmentally sensitive and that include the child's point of view. Drawing is a popular tool that is commonly used in clinical settings. Research on drawing in experimental settings has confirmed that the opportunity to draw while talking increases the amount of verbal information that children report during an interview. The present research examined whether drawing also facilitates children's self reports during a mental health assessment. A total of 33 5-12-year-old children were asked either to draw and tell about their presenting problem or to tell only. Children who drew and told provided twice as much verbal information as children who told only. Further, interviewers in the draw and tell condition used a greater number of minimal responses than did interviewers in the tell only condition. These data have important implications for clinical practice.

  7. Increased Diversity of the HLA-B40 Ligandome by the Presentation of Peptides Phosphorylated at Their Main Anchor Residue*

    PubMed Central

    Marcilla, Miguel; Alpízar, Adán; Lombardía, Manuel; Ramos-Fernandez, Antonio; Ramos, Manuel; Albar, Juan Pablo

    2014-01-01

    Human leukocyte antigen (HLA) class I molecules bind peptides derived from the intracellular degradation of endogenous proteins and present them to cytotoxic T lymphocytes, allowing the immune system to detect transformed or virally infected cells. It is known that HLA class I–associated peptides may harbor posttranslational modifications. In particular, phosphorylated ligands have raised much interest as potential targets for cancer immunotherapy. By combining affinity purification with high-resolution mass spectrometry, we identified more than 2000 unique ligands bound to HLA-B40. Sequence analysis revealed two major anchor motifs: aspartic or glutamic acid at peptide position 2 (P2) and methionine, phenylalanine, or aliphatic residues at the C terminus. The use of immobilized metal ion and TiO2 affinity chromatography allowed the characterization of 85 phosphorylated ligands. We further confirmed every sequence belonging to this subset by comparing its experimental MS2 spectrum with that obtained upon fragmentation of the corresponding synthetic peptide. Remarkably, three phospholigands lacked a canonical anchor residue at P2, containing phosphoserine instead. Binding assays showed that these peptides bound to HLA-B40 with high affinity. Together, our data demonstrate that the peptidome of a given HLA allotype can be broadened by the presentation of peptides with posttranslational modifications at major anchor positions. We suggest that ligands with phosphorylated residues at P2 might be optimal targets for T-cell-based cancer immunotherapy. PMID:24366607

  8. The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases.

    PubMed

    Roberts, Irma N; Passeron, Susana; Barneix, Atilio J

    2006-11-01

    We have previously reported the occurrence of two serine endoproteases (referred to as P1 and P2) in dark-induced senescent wheat (Triticum aestivum L.) leaves. P1 enzyme was already purified and identified as a subtilisin-like serine endoprotease (Roberts et al. in Physiol Plant 118:483-490, 2003). In this paper, we demonstrate by Western blot analysis of extracts obtained from dark-induced senescent leaves that an antiserum raised against P1 was able to recognise a second protein band of 78 kDa which corresponded to P2 activity. This result suggested that both enzymes must be structurally related. Therefore, we purified and characterised P2 activity. According to its biochemical and physical properties (inhibition by chymostatin and PMSF, broad pH range of activity, thermostability and ability to hydrolyse Suc-AAPF-pNA) P2 was classified as a serine protease with chymotrypsin-like activity. In addition, P2 was identified by mass spectrometry as a subtilisin-like protease distinct from P1. Western blot analysis demonstrated that P1 appeared in extracts from non-detached dark-induced senescent leaves but was undetectable in leaves senescing after nitrogen (N) deprivation. In contrast, P2 was already present in non-senescent leaves and showed increased levels in leaves senescing after N starvation or incubation in darkness. P1 signal was detected at late stages of ethephon or methyl jasmonate-induced senescence but was undetectable in senescent leaves from plants treated with abscisic acid. None of the three hormones have any effect on P2 protein levels. These results indicate that despite their biochemical and structural similarities, both enzymes are probably involved in different physiological roles.

  9. An Evaluation of Main Idea Strategy Instruction in Four Commercial Reading Programs: Implications for Students with Learning Problems.

    ERIC Educational Resources Information Center

    Jitendra, Asha K.; Chard, David; Hoppes, Mary K.; Renouf, Kristin; Gardill, M. Cathleen

    2001-01-01

    Evaluates four commercial reading programs at the second, fourth, and sixth grade levels with respect to main idea instructional practices and readability of text. Evaluates the type of main idea tasks and main idea statements, as well as placement of explicit main idea statements in the text. Discusses implications for practitioners meeting…

  10. ALMA: the completion of the 25 Europeans antennas: focus on main performances, problems found during erection and lessons learned

    NASA Astrophysics Data System (ADS)

    Marchiori, Gianpietro; Rampini, Francesco; Giacomel, Luigino; Giacomel, Stefano; Marcuzzi, Enrico; Formentin, Federico

    2014-07-01

    The 2013 saw the completion of the Atacama Large Millimeter Array (ALMA). The array consists of 66 antennas and operates in Chile at the Chajnantor plateau at 5000 m altitude. 25 of the 12 meter diameter antennas have been delivered by the AEM consortium constituted by Thales Alenia Space France, Thales Alenia Space Italy, European Industrial Engineering (EIE GROUP), and MT Mechatronics. The purpose of this paper is to present a summary of the results obtained by the antennas during the different test campaign and a summary of the problems aroused during the erection and the assembly phases and the relative lesson learned. The results of the engineering performances and antenna systems, performed during the acceptance phases of the first antennas, have shown the full correspondence between what was expected during the design phase and what has been achieved in the final product, with a difference of less than 10% and the trend tends to be conservative. As for "on sky antennas performances", all the tests done in the 25 antennas showed excellent results. The antenna All Sky Pointing Error and Offset Pointing Error with and without metrology correction turned to be always excellent. The Fast Motion Capability with the tracking requirements after a step motion was better than an order of magnitude compared to the requests. Four years of on-site activities and the various phases of construction and assembly of 25 antennas have been a major challenge for the European Consortium. The problems encountered in this phase were many and varied: interfaces issues, design and foundation problems, manufacturing and assembly errors, electrical installation, shipment delays, human errors, adverse weather conditions, financial aspects, schedule, etc. The important is being prepared with an "a priori", that is a risk assessment which helps ensuring the best solution for the complete customer satisfaction of the scientific and technical requests. Despite the already excellent

  11. Recent advances in hopanoids analysis: Quantification protocols overview, main research targets and selected problems of complex data exploration.

    PubMed

    Zarzycki, Paweł K; Portka, Joanna K

    2015-09-01

    Pentacyclic triterpenoids, particularly hopanoids, are organism-specific compounds and are generally considered as useful biomarkers that allow fingerprinting and classification of biological, environmental and geological samples. Simultaneous quantification of various hopanoids together with battery of related non-polar and low-molecular mass compounds may provide principal information for geochemical and environmental research focusing on both modern and ancient investigations. Target compounds can be derived from microbial biomass, water columns, sediments, coals, crude fossils or rocks. This create number of analytical problems due to different composition of the analytical matrix and interfering compounds and therefore, proper optimization of quantification protocols for such biomarkers is still the challenge. In this work we summarizing typical analytical protocols that were recently applied for quantification of hopanoids like compounds from different samples. Main steps including components of interest extraction, pre-purification, fractionation, derivatization and quantification involving gas (1D and 2D) as well as liquid separation techniques (liquid-liquid extraction, solid-phase extraction, planar and low resolution column chromatography, high-performance liquid chromatography) are described and discussed from practical point of view, mainly based on the experimental papers that were published within last two years, where significant increase in hopanoids research was noticed. The second aim of this review is to describe the latest research trends concerning determination of hopanoids and related low-molecular mass lipids analyzed in various samples including sediments, rocks, coals, crude oils and plant fossils as well as stromatolites and microbial biomass cultivated under different conditions. It has been found that majority of the most recent papers are based on uni- or bivariate approach for complex data analysis. Data interpretation involves

  12. A Study of Selected Adolescent Problems as Presented in Contemporary Realistic Fiction for Middle School Students.

    ERIC Educational Resources Information Center

    Compton, Mary F.; Skelton, Juanita

    1982-01-01

    Analyzed 15 popular fiction books in terms of problem-concerns of young adolescents. Five were by author Judy Blume. The books reflected personal, family, and interpersonal problems and a trend toward realism. Fiction can be helpful in counseling and in developmental programs. (JAC)

  13. Prosocial Involvement and Antisocial Peer Affiliations as Predictors of Behavior Problems in Urban Adolescents: Main Effects and Moderating Effects

    ERIC Educational Resources Information Center

    Kaufmann, Dagmar R.; Wyman, Peter A.; Forbes-Jones, Emma L.; Barry, Jason

    2007-01-01

    This study examined the relationships between prosocial involvement (PI), antisocial peer affiliations (APA), and the degree of their overlapping or independent prediction of behavior problems in urban adolescents. Two dimensions of behavior were assessed at ages 9-11 and at ages 13-15: disruptive, aggressive conduct and number of delinquent…

  14. Course Presentation of the Joint-Products Problem with Costs Associated with Dumping

    ERIC Educational Resources Information Center

    Borland, Melvin V.; Howsen, Roy M.

    2009-01-01

    The typical profit-maximization solution for the joint-production problem found in intermediate texts, managerial texts, and other texts concerned with optimal pricing is oversimplified and inconsistent with profit maximization, unless there is either no excess of any of the joint products or no costs associated with dumping. However, it is an…

  15. The High School Principal's Role with Respect to the Present Marihuana Problem.

    ERIC Educational Resources Information Center

    Nostrand, Peter F.

    This report indicates to principals that their schools probably have a marihuana problem; outlines measures necessary to the establishment of an effective marihuana prevention program; and suggests ways to handle the marihuana smoker once he has been identified. To help the principal focus upon, understand, and take constructive action with…

  16. A note on 'The main problem of satellite theory for small eccentricities, by A. Deprit and A. Rom, 1970.'

    NASA Technical Reports Server (NTRS)

    Aksnes, K.

    1971-01-01

    Criticism of Deprit and Rom's (1970) extension of Brouwer's (1959) first-order satellite theory to the third order in J sub 2. It is noted that Deprit and Rom's theory suffers from the drawback that the perturbations of all orders are expressed as infinite power series in the eccentricity e. It is demonstrated that Deprit and Rom's reported failure to extend Brouwer's theory to the second order in a closed form by means of Lie transforms is due to an oversight and is not caused by difficulties inherent in the problem or in the particular perturbation method used.

  17. Association between vegetarian diet and menstrual problems in young women: a case presentation and brief review.

    PubMed

    Griffith, Joan; Omar, Hatim

    2003-10-01

    In the last twenty years, several studies have suggested the existence of an association between vegan diets and adolescent menstrual disorders. We share our experience with this problem and a review of the literature on the subject. We conclude that despite the existence of some evidence to the possible association between vegetarian diet and menstrual disorders, it is still not clear if this association is due solely to the vegetarian diet or due to the overall inadequate nutrition with decreased proportions of fat and protein in the diet. We believe that more prospective, well controlled studies are needed to truly explain this association.

  18. [Present-day problems of complex hygienic evaluation of drinking water use].

    PubMed

    Tulakin, A V; Novikov, Iu V; Tsyplakova, G V; Ampleeva, G P; Shukelaĭt', A B

    2005-01-01

    The authors offer substantiated methodical approaches to complex evaluation of the sanitary reliability of drinking water supply systems. They recommend not only evaluating drinking water quality, but also assessing the sanitary state of water sources (catchment areas), the reliability of water preparation and transportation, the standards of water supply and the reliability of production laboratory control. A range of complex hygienic studies have demonstrated that the problems of Voronezh interurban reservoir as a water source are caused by its multi-purpose use. Under these conditions insufficient hygienic efficiency of the conventional water preparation schemes and low sanitary reliability of water transportation systems favors negative influence of water factor on population mortality. The offered methodical approaches give the systematic idea of factors that determine drinking water quality. Operative administrative decisions concerning hygienic safety of public water use may be made with these methodical approaches taken into consideration.

  19. Robotic surgery and cancer: the present state, problems and future vision.

    PubMed

    Hashizume, Makoto; Tsugawa, Kouji

    2004-05-01

    In the 1990s, laparoscopic surgery entirely changed the traditional style of surgical operations. Laparoscopic cholecystectomy has spread rapidly and is now established as the standard treatment. However, besides cholecystectomy, endoscopic procedures are still not applied so widely to a variety of surgical operations. This is because laparoscopic techniques, such as suturing or ligation, make it difficult for surgeons to perform other kinds of operations and thus greatly increase their mental and physical stress. It is necessary to introduce various advanced technologies such as: surgical robots, three dimensional (3D) images, computer graphics (CG), computer simulation technology and others. Surgical robots, including the AESOP, da Vinci and ZEUS systems, provide surgeons with technologically advanced vision and hand skills. As a result, such systems are expected to revolutionize the field of surgery. However, there have so far been few studies which discuss the indications of robotic surgery for tumors/cancer. Therefore, herein we review various studies published in English to focus on the application of robotic surgery to tumors/cancer. We point out that there are several problems to be solved for robot surgery: i) price of surgical robots, ii) training systems for surgeon, iii) coverage by medical insurance, iv) downsizing and v) navigation system. In conclusion, we believe that, in the near future as robotic technology continues to develop, almost all kinds of endoscopic surgery will be performed by this technology. It will replace traditional surgery not only in the treatment of benign diseases but also in malignant illnesses.

  20. Cultural Intersection of Asian Indian Ethnicity and Presenting Problem: Adapting Multicultural Competence for Clinical Accessibility

    ERIC Educational Resources Information Center

    Bean, Roy A.; Titus, Gayatri

    2009-01-01

    A more accessible approach to using multicultural counseling competence is presented to bridge the researcher-practitioner gap and increase the likelihood of quality clinical services. The focus of the approach is on counselor awareness, knowledge, and skills as they relate to the most important contextualizing factors: ethnic culture and the…

  1. Regulatory and Policy Problems Presented by the Interdependence of Computer and Communication Services and Facilities.

    ERIC Educational Resources Information Center

    Federal Communications Commission, Washington, DC.

    Various petitions submitted to the Federal Communications Commission (FCC) for reconsideration and the FCC's response and discussion of these petitions are described in this memorandum. First, the questions raised by the petitioners are presented: "Did the Commission err in deciding not to impose a complete bar on communications common…

  2. Helicopter emergency medical services (doctor-helicopter) in Fukushima Prefecture: present state and problems.

    PubMed

    Tase, Choichiro; Ohno, Yuko; Hasegawa, Arifumi; Tsukada, Yasuhiro; Shimada, Jiro; Ikegami, Yukihiro

    2010-06-01

    The purpose of this study is to identify the problems in operating an emergency medical service helicopter with an emergency medicine doctor on board (doctor-helicopter) in Fukushima Prefecture, Japan, which covers wide regions and many rural areas. The study looked at the numbers of flights and patients during the 523 days since the start of the doctor-helicopter service at the Fukushima Medical University Hospital. The items investigated were: number of flights, number of helicopter dispatches per month, number of patients, the hospitals where patients were taken to, the fire department dispatch centers that requested the doctor-helicopter, and the number of times each doctor flew on the helicopter. There were 450 flights. When the service was started, there were a few flights, but they gradually increased. The majority of the flights were to emergency scenes (295), while 75 flights were interfacility transports of critically ill patients, 79 flights were cancelled after take-off, and one flight was for a disaster relief operation. The nature of requests differed greatly depending on the fire department dispatch center requesting the service. The majority of patients were trauma patients (62.2%). Stroke (8.5%) and acute coronary syndrome (5.2%) patients requiring emergency treatment were fewer than anticipated. The final destination hospitals were appropriate hospitals in the region. Because the number of flight doctors is small, the burden on individual doctors is large. A system for early on-site diagnosis and helicopter request by emergency rescue team is required to maintain a high quality of emergency care.

  3. Brachial neuritis or Parsonage-Turner syndrome: A problem of liability. A presentation of 3 cases.

    PubMed

    Rodríguez-Hornillo, M; de la Riva, M C; Ojeda, R

    2016-01-01

    Neuralgic amyotrophy, brachial neuritis or Parsonage-Turner syndrome is a rare neuromuscular involvement of unknown aetiology. When it onsets in connection with a health care act, such as childbirth or surgery, a malpractice argument is often used as a cause of adverse outcome, usually due to an incorrect position of the patient on the operating table, a circumstance which directly involves the anesthesia area. Three cases are presented of Parsonage-Turner syndrome following very different surgery, with different results as regards prognosis. A review and discussion of bibliography is presented on the possibility that such circumstances are the subject of malpractice claims. Special emphasis is placed on the most currently accepted aetiopathogenic theories, and the relationship of this syndrome with the surgical act as a determining medico-legal aspect. Valuation parameters are proposed.

  4. Abdominal actinomycosis after laparoscopic cholecystectomy: an uncommon presentation of an uncommon problem

    PubMed Central

    Tankel, James A.; Gurjar, Shashank V.; Holford, Nicholas C.; Williams, Sian

    2015-01-01

    Actinomycosis is a rare bacterial infection with a broad clinical presentation that is seldom reported after elective cholecystectomy. We present an as-of-yet unreported case of actinomycosis in an 81-year-old gentleman who was found to have right-sided peritonitis and small bowel obstruction 11 months after elective laparoscopic cholecystectomy. A complex loculated lesion was found on laparotomy with a protracted course of antibiotics being needed for treatment. The rarity of this condition will mean it remains a surprise diagnosis to many clinicians. However, it is important that clinicians maintain some index of suspicion to prevent unnecessary surgery and are aware of the protracted course of antibiotics that is needed for successful treatment. PMID:25988074

  5. Late presentation of metastatic pheochromocytoma: A problem case solved by I-131 MIBG scintigraphy

    SciTech Connect

    Geatti, O.; Shapiro, B.; Virgolini, L. )

    1990-02-01

    A patient presented with recurrent pheochromocytoma 10 years following the apparently successful surgical cure of a right adrenal pheochromocytoma. Conventional medical imaging techniques, (chest radiograph, abdominal ultrasound, and abdominal CT) suggested local recurrence for which surgery was planned. I-131 MIBG scintigraphy revealed disseminated metastatic disease that rendered attempts at surgical cure futile. The patient was treated with three therapeutic doses of I-131 MIBG with good symptomatic palliation and improvement of some biochemical parameters.

  6. On the genesis and the present state of the problem of comet-asteroidal danger

    NASA Astrophysics Data System (ADS)

    Tsitsin, F. A.; Chepurova, V. M.; Genkin, I. L.

    The present epoch is the time of a decreased cometary-asteroidal danger (CAD). The actual threat isn't conditioned by the low mean level of the CAD, but by its unpredicted fluctuations that could be realized in discrete collisions of comets and asteroids with the Earth. The task is to transfer these fluctuations in the rank of predicted and precalculated (and later -- technically prevented) occurrences.

  7. Fungal Smn and Spf30 homologues are mainly present in filamentous fungi and genomes with many introns: implications for spinal muscular atrophy.

    PubMed

    Mier, Pablo; Pérez-Pulido, Antonio J

    2012-01-10

    Spinal muscular atrophy is an important rare genetic disease characterized by the loss of motor neurons, where the main gene responsible is smn1. Orthologous genes have only been characterized in a single fungal genome: Schizosaccharomyces pombe. We have searched for putative SMN orthologues in publically available fungal genomes, finding that they are predominately present in filamentous fungi. SMN binding partners and the SPF30 SMN paralogue, which are all involved in mRNA splicing, were found to be present in a similar but non-identical subset of fungal genomes. The Saccharomycces cerevisiae yeast genome contains neither smn1 orthologues nor paralogues and it has been suggested that this might be related to the low number of introns in this yeast. Here we have tested this hypothesis by looking at other fungal genomes. Significantly, we find that fungal genomes with high numbers of introns also possess an SMN orthologue or at least its paralogue, SPF30.

  8. Developmental problems and their solution for the Space Shuttle main engine alternate liquid oxygen high-pressure turbopump: Anomaly or failure investigation the key

    NASA Technical Reports Server (NTRS)

    Ryan, R.; Gross, L. A.

    1995-01-01

    The Space Shuttle main engine (SSME) alternate high-pressure liquid oxygen pump experienced synchronous vibration and ball bearing life problems that were program threatening. The success of the program hinged on the ability to solve these development problems. The design and solutions to these problems are engirded in the lessons learned and experiences from prior programs, technology programs, and the ability to properly conduct failure or anomaly investigations. The failure investigation determines the problem cause and is the basis for recommending design solutions. For a complex problem, a comprehensive solution requires that formal investigation procedures be used, including fault trees, resolution logic, and action items worked through a concurrent engineering-multidiscipline team. The normal tendency to use an intuitive, cut-and-try approach will usually prove to be costly, both in money and time and will reach a less than optimum, poorly understood answer. The SSME alternate high-pressure oxidizer turbopump development has had two complex problems critical to program success: (1) high synchronous vibrations and (2) excessive ball bearing wear. This paper will use these two problems as examples of this formal failure investigation approach. The results of the team's investigation provides insight into the complexity of the turbomachinery technical discipline interacting/sensitivities and the fine balance of competing investigations required to solve problems and guarantee program success. It is very important to the solution process that maximum use be made of the resources that both the contractor and Government can bring to the problem in a supporting and noncompeting way. There is no place for the not-invented-here attitude. The resources include, but are not limited to: (1) specially skilled professionals; (2) supporting technologies; (3) computational codes and capabilities; and (4) test and manufacturing facilities.

  9. Severe vulvovaginitis as a presenting problem of type 2 diabetes in adolescent girls: a case series.

    PubMed

    Curran, Jacqueline; Hayward, Jenette; Sellers, Elizabeth; Dean, Heather

    2011-04-01

    This article describes the presentation of 4 adolescent girls who sought medical attention for severe vulvovaginitis and were subsequently found to have type 2 diabetes. Symptomatic vulvovaginitis is rare in adolescent girls, and its presence should alert health care providers to test for underlying hyperglycemia. These 4 girls represent 8.5% of the females with new-onset type 2 diabetes during a 3-year period (2007-2009). The 4 cases fulfilled the current Canadian Diabetes Association screening criteria for type 2 diabetes in youth, yet none of these girls had been screened. These cases highlight the need for better awareness of screening criteria for type 2 diabetes in adolescents. Consideration should be given in clinical practice guidelines to including the presence of unusual or severe infections as a risk factor for type 2 diabetes in youth.

  10. "What Brings Him Here Today?": Medical Problem Presentation Involving Children with Autism Spectrum Disorders and Typically Developing Children

    ERIC Educational Resources Information Center

    Solomon, Olga; Heritage, John; Yin, Larry; Maynard, Douglas W.; Bauman, Margaret L.

    2016-01-01

    Conversation and discourse analyses were used to examine medical problem presentation in pediatric care. Healthcare visits involving children with ASD and typically developing children were analyzed. We examined how children's communicative and epistemic capabilities, and their opportunities to be socialized into a competent patient role are…

  11. The Present Situation, Problems, Countermeasures of Compulsory Education in the Rural Area of Western Region in China

    ERIC Educational Resources Information Center

    Xu, Hui

    2005-01-01

    The present condition of rural education in the western region of China is not optimistic. Existing problems include lacking education investment, poor school-running conditions, simplified running pattern and laggard concept of education. The countermeasures are: firstly, governments at all level especially the center one should increase input to…

  12. Conduct problems, depressive symptomatology and their co-occurring presentation in childhood as predictors of adjustment in early adolescence.

    PubMed

    Ingoldsby, Erin M; Kohl, Gwynne O; McMahon, Robert J; Lengua, Liliana

    2006-10-01

    The present study investigated patterns in the development of conduct problems (CP), depressive symptoms, and their co-occurrence, and relations to adjustment problems, over the transition from late childhood to early adolescence. Rates of depressive symptoms and CP during this developmental period vary by gender; yet, few studies involving non-clinical samples have examined co-occurring problems and adjustment outcomes across boys and girls. This study investigates the manifestation and change in CP and depressive symptom patterns in a large, multisite, gender-and ethnically-diverse sample of 431 youth from 5th to 7th grade. Indicators of CP, depressive symptoms, their co-occurrence, and adjustment outcomes were created from multiple reporters and measures. Hypotheses regarding gender differences were tested utilizing both categorical (i.e., elevated symptom groups) and continuous analyses (i.e., regressions predicting symptomatology and adjustment outcomes). Results were partially supportive of the dual failure model (Capaldi, 1991, 1992), with youth with co-occurring problems in 5th grade demonstrating significantly lower academic adjustment and social competence two years later. Both depressive symptoms and CP were risk factors for multiple negative adjustment outcomes. Co-occurring symptomatology and CP demonstrated more stability and was associated with more severe adjustment problems than depressive symptoms over time. Categorical analyses suggested that, in terms of adjustment problems, youth with co-occurring symptomatology were generally no worse off than those with CP-alone, and those with depressive symptoms-alone were similar over time to those showing no symptomatology at all. Few gender differences were noted in the relations among CP, depressive symptoms, and adjustment over time.

  13. Conduct Problems, Depressive Symptomatology and Their Co-Occurring Presentation in Childhood as Predictors of Adjustment in Early Adolescence

    PubMed Central

    Ingoldsby, Erin M.; Kohl, Gwynne O.; McMahon, Robert J.; Lengua, Liliana

    2009-01-01

    The present study investigated patterns in the development of conduct problems (CP), depressive symptoms, and their co-occurrence, and relations to adjustment problems, over the transition from late childhood to early adolescence. Rates of depressive symptoms and CP during this developmental period vary by gender, yet, few studies involving non-clinical samples have examined co-occurring problems and adjustment outcomes across boys and girls. This study investigates the manifestation and change in CP and depressive symptom patterns in a large, multisite, gender- and ethnically-diverse sample of 431 youth from 5th to 7th grade. Indicators of CP, depressive symptoms, their co-occurrence, and adjustment outcomes were created from multiple reporters and measures. Hypotheses regarding gender differences were tested utilizing both categorical (i.e., elevated symptom groups) and continuous analyses (i.e., regressions predicting symptomatology and adjustment outcomes). Results were partially supportive of the dual failure model (Capaldi, 1991, 1992), with youth with co-occurring problems in 5th grade demonstrating significantly lower academic adjustment and social competence two years later. Both depressive symptoms and CP were risk factors for multiple negative adjustment outcomes. Co-occurring symptomatology and CP demonstrated more stability and was associated with more severe adjustment problems than depressive symptoms over time. Categorical analyses suggested that, in terms of adjustment problems, youth with co-occurring symptomatology were generally no worse off than those with CP-alone, and those with depressive symptoms-alone were similar over time to those showing no symptomatology at all. Few gender differences were noted in the relations among CP, depressive symptoms, and adjustment over time. PMID:16967336

  14. Problem of the Landau Poles in Quantum Field Theory: from N. N. Bogolyubov to the Present Day

    NASA Astrophysics Data System (ADS)

    Jafarov, R. G.; Agham-Alieva, L. A.; Agha-Kishieva, P. É.; Rahim-zade, S. G.; Mamedova, S. N.; Mutallimov, M. M.

    2017-03-01

    A review of problems associated with the unphysical Landau pole in propagators of quantum particles is given. Approaches to eliminating this pole within the framework of electrodynamics and effective theories of strongly interacting particles are investigated. The asymptotic behavior at large momenta in the scalar theory ϕ4 in the two-particle (bubble) approximation is investigated. To formulate a calculational model in the two-particle approximation, we use an iterative scheme for solving the Schwinger-Dyson equation in the formalism of a bilocal field source. The main problem is to develop a recipe for numerical analysis of the solutions of the obtained nonlinear equation for the amplitude at small interaction distances (large values of the momentum) for different values of the constant. The nontrivial behavior of the amplitude in the deeply inelastic region of momenta is determined. The positions of the unphysical poles (the Landau poles) in the expression for the amplitude in the deeply inelastic region of momenta are identified.

  15. More than a century of bathymetric observations and present-day shallow sediment characterization in Belfast Bay, Maine, USA: Implications for pockmark field longevity

    USGS Publications Warehouse

    Brothers, L.L.; Kelley, J.T.; Belknap, D.F.; Barnhardt, W.A.; Andrews, B.D.; Maynard, M.L.

    2011-01-01

    Mechanisms and timescales responsible for pockmark formation and maintenance remain uncertain, especially in areas lacking extensive thermogenic fluid deposits (e.g., previously glaciated estuaries). This study characterizes seafloor activity in the Belfast Bay, Maine nearshore pockmark field using (1) three swath bathymetry datasets collected between 1999 and 2008, complemented by analyses of shallow box-core samples for radionuclide activity and undrained shear strength, and (2) historical bathymetric data (report and smooth sheets from 1872, 1947, 1948). In addition, because repeat swath bathymetry surveys are an emerging data source, we present a selected literature review of recent studies using such datasets for seafloor change analysis. This study is the first to apply the method to a pockmark field, and characterizes macro-scale (>5 m) evolution of tens of square kilometers of highly irregular seafloor. Presence/absence analysis yielded no change in pockmark frequency or distribution over a 9-year period (1999-2008). In that time pockmarks did not detectably enlarge, truncate, elongate, or combine. Historical data indicate that pockmark chains already existed in the 19th century. Despite the lack of macroscopic changes in the field, near-bed undrained shear-strength values of less than 7 kPa and scattered downcore 137Cs signatures indicate a highly disturbed setting. Integrating these findings with independent geophysical and geochemical observations made in the pockmark field, it can be concluded that (1) large-scale sediment resuspension and dispersion related to pockmark formation and failure do not occur frequently within this field, and (2) pockmarks can persevere in a dynamic estuarine setting that exhibits minimal modern fluid venting. Although pockmarks are conventionally thought to be long-lived features maintained by a combination of fluid venting and minimal sediment accumulation, this suggests that other mechanisms may be equally active in

  16. More than a century of bathymetric observations and present-day shallow sediment characterization in Belfast Bay, Maine, USA: implications for pockmark field longevity

    USGS Publications Warehouse

    Brothers, Laura L.; Kelley, Joseph T.; Belknap, Daniel F.; Barnhardt, Walter A.; Andrews, Brian D.; Maynard, Melissa Landon

    2011-01-01

    Mechanisms and timescales responsible for pockmark formation and maintenance remain uncertain, especially in areas lacking extensive thermogenic fluid deposits (e.g., previously glaciated estuaries). This study characterizes seafloor activity in the Belfast Bay, Maine nearshore pockmark field using (1) three swath bathymetry datasets collected between 1999 and 2008, complemented by analyses of shallow box-core samples for radionuclide activity and undrained shear strength, and (2) historical bathymetric data (report and smooth sheets from 1872, 1947, 1948). In addition, because repeat swath bathymetry surveys are an emerging data source, we present a selected literature review of recent studies using such datasets for seafloor change analysis. This study is the first to apply the method to a pockmark field, and characterizes macro-scale (>5 m) evolution of tens of square kilometers of highly irregular seafloor. Presence/absence analysis yielded no change in pockmark frequency or distribution over a 9-year period (1999–2008). In that time pockmarks did not detectably enlarge, truncate, elongate, or combine. Historical data indicate that pockmark chains already existed in the 19th century. Despite the lack of macroscopic changes in the field, near-bed undrained shear-strength values of less than 7 kPa and scattered downcore 137Cs signatures indicate a highly disturbed setting. Integrating these findings with independent geophysical and geochemical observations made in the pockmark field, it can be concluded that (1) large-scale sediment resuspension and dispersion related to pockmark formation and failure do not occur frequently within this field, and (2) pockmarks can persevere in a dynamic estuarine setting that exhibits minimal modern fluid venting. Although pockmarks are conventionally thought to be long-lived features maintained by a combination of fluid venting and minimal sediment accumulation, this suggests that other mechanisms may be equally active in

  17. Fluctuation of densities of bacteriophages and Escherichia coli present in natural biofilms and water of a main channel and a small tributary.

    PubMed

    Hirotani, Hiroshi; Yu, Ma; Yamada, Takeshi

    2013-01-01

    Fluctuation of bacteriophage and Escherichia coli densities in naturally developed riverbed biofilms were investigated for a 1-year period. E. coli ranged from 1,500 to 15,500 most probable number (MPN)/100 mL and from 580 to 18,500 MPN/cm(2) in the main channel in the river water and biofilms, respectively. However, the fluctuations were much greater in the tributary, ranging from 0.8 to 100 MPN/100 mL and from 0.3 to 185 MPN/cm(2) in water and biofilms, respectively. The fluctuations of coliphages were also greater in the tributary than in the main channel. FRNA phage serotyping results indicated no significant differences in the source type of the fecal contamination in the main channel and tributary sampling stations. Significant correlations between phage groups in biofilms and water were found at both main channel and tributary. It was assumed that natural biofilms developed in the streambed captured and retained somatic phages in the biofilms for a certain period of time in the main channel site. At the location receiving constant and heavy contamination, the usage of phage indicators may provide additional information on the presence of viruses. In the small tributary it may be possible to estimate the virus concentration by monitoring the E. coli indicator.

  18. [Prioritization of the main health problems having impact upon the activity of the Emergency Military Hospital "Dr. Iacob Cihac" of Iaşi in the years 1995-2003].

    PubMed

    Maria Liliana, Iliescu; Botez, C; Zanoschi, Georgeta

    2005-01-01

    The various health problems that are faced by a hospital institution at any given point in time, compete for the usually limited resources that are available, while the health needs are infinite.Therefore, the prioritization process is a key to a functional activity. The prioritization method involves the formal selection criteria and system used to prioritize the health conditions. The Hanlon method is a quality one, and considers the following criteria: the magnitude of the problem, the severity of the problem, the predicted effectiveness of the intervention, and the feasibility of intervening to address the problem. This method requires a technique to allocate a score for each criterion and each health condition. According to hospitalized morbidity rates registered between 1995-2003, using prioritization method, we detected the main causes to address for improving the activity of Emergency Military Hospital "Dr. Iacob Cihac" Iaşi through a better selection of the inpatients and primary health care and community involvement. The presentation of the results situated on the top cardiovascular diseases, and on the last place the bone and articular diseases.

  19. Unraveling the formation history of the black hole X-ray binary LMC X-3 from the zero age main sequence to the present

    NASA Astrophysics Data System (ADS)

    Sørensen, Mads; Fragos, Tassos; Steiner, James F.; Antoniou, Vallia; Meynet, Georges; Dosopoulou, Fani

    2017-01-01

    Aims: We have endeavoured to understand the formation and evolution of the black hole (BH) X-ray binary LMC X-3. We estimated the properties of the system at four evolutionary stages: (1) at the zero-age main-sequence (ZAMS); (2) immediately before the supernova (SN) explosion of the primary; (3) immediately after the SN; and (4) at the moment when Roche-lobe overflow began. Methods: We used a hybrid approach that combined detailed calculations of the stellar structure and binary evolution with approximate population synthesis models. This allowed us to estimate potential natal kicks and the evolution of the BH spin. We incorporated as model constraints the most up-to-date observational information throughout, which include the binary orbital properties, the companion star mass, effective temperature, surface gravity and radius, and the BH mass and spin. Results: We find at 5% and 95% confidence, respectively, that LMC X-3 began as a ZAMS system with the mass of the primary star in the range M1,ZAMS = 22-31 M⊙ and a secondary star of M2,ZAMS = 5.0-8.3 M⊙, in a wide (PZAMS ≳ 2.000 days) and eccentric (eZAMS ≳ 0.18) orbit. Immediately before the SN, the primary had a mass of M1,preSN = 11.1-18.0 M⊙, but the secondary star was largely unaffected. The orbital period decreased to 0.6-1.7 days and is still eccentric 0 ≤ epreSN ≤ 0.44. We find that a symmetric SN explosion with no or small natal kicks (a few tens of km s-1) imparted on the BH cannot be formally excluded, but large natal kicks in excess of ≳120 km s-1 increase the estimated formation rate by an order of magnitude. Following the SN, the system has a BH MBH,postSN = 6.4-8.2 M⊙ and is set on an eccentric orbit. At the onset of the Roche-lobe overflow, the orbit is circular and has a period of PRLO = 0.8-1.4 days. The full Table 2 is only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/597/A12

  20. Spherical harmonic representation of the main geomagnetic field for world charting and investigations of some fundamental problems of physics and geophysics

    NASA Technical Reports Server (NTRS)

    Barraclough, D. R.; Hide, R.; Leaton, B. R.; Lowes, F. J.; Malin, S. R. C.; Wilson, R. L. (Principal Investigator)

    1982-01-01

    Progress in the harmonic analysis of MAGSAT data is reported. Single-day data sets were subdivided into information on the sunrise side of the Earth and information on the sunset side of the Earth. Data for the main and external fields each demonstrate a clear and consistent systematic difference between the sets of data which was determined to be, due to ionospheric currents which differ from the sunset to the sunrise terminator. A toroidal field was analyzed for and determined to be an apparent toroidal field resulting from electric currents concentrated in the two terminators. Progressive elimination of auroral zone data demonstrates that the information presented does not arise from complications due to Birkeland currents.

  1. Rainbow trout CK9, a CCL25-like ancient chemokine that attracts and regulates B cells and macrophages, the main antigen presenting cells in fish

    PubMed Central

    Aquilino, Carolina; Granja, Aitor G.; Castro, Rosario; Wang, Tiehui; Abos, Beatriz; Parra, David; Secombes, Christopher J.; Tafalla, Carolina

    2016-01-01

    CK9 is a rainbow trout (Oncorhynchus mykiss) CC chemokine phylogenetically related to mammalian CCL25. Although CK9 is known to be transcriptionally regulated in response to inflammation particularly in mucosal tissues, its functionality has never been revealed. In the current work, we have demonstrated that CK9 is chemoattractant for antigen presenting cells (APCs) expressing major histocompatibility complex class II (MHC II) on the cell surface. Among these APCs, CK9 has a strong chemotactic capacity for both B cells (IgM+ and IgT+) and macrophages. Along with its chemotactic capacities, CK9 modulated the MHC II turnover of B lymphocytes and up-regulated the phagocytic capacity of both IgM+ cells and macrophages. Although CK9 had no lymphoproliferative effects, it increased the survival of IgT+ lymphocytes. Furthermore, we have established that the chemoattractant capacity of CK9 is strongly increased after pre-incubation of leukocytes with a T-independent antigen, whereas B cell receptor (BCR) cross-linking strongly abrogated their capacity to migrate to CK9, indicating that CK9 preferentially attracts B cells at the steady state or under BCR-independent stimulation. These results point to CK9 being a key regulator of B lymphocyte trafficking in rainbow trout, able to modulate innate functions of teleost B lymphocytes and macrophages. PMID:27003360

  2. Renormalization in Quantum Field Theory and the Riemann-Hilbert Problem I: The Hopf Algebra Structure of Graphs and the Main Theorem

    NASA Astrophysics Data System (ADS)

    Connes, Alain; Kreimer, Dirk

    This paper gives a complete selfcontained proof of our result announced in [6] showing that renormalization in quantum field theory is a special instance of a general mathematical procedure of extraction of finite values based on the Riemann-Hilbert problem. We shall first show that for any quantum field theory, the combinatorics of Feynman graphs gives rise to a Hopf algebra which is commutative as an algebra. It is the dual Hopf algebra of the enveloping algebra of a Lie algebra whose basis is labelled by the one particle irreducible Feynman graphs. The Lie bracket of two such graphs is computed from insertions of one graph in the other and vice versa. The corresponding Lie group G is the group of characters of . We shall then show that, using dimensional regularization, the bare (unrenormalized) theory gives rise to a loop where C is a small circle of complex dimensions around the integer dimension D of space-time. Our main result is that the renormalized theory is just the evaluation at z=D of the holomorphic part γ+ of the Birkhoff decomposition of γ. We begin to analyse the group G and show that it is a semi-direct product of an easily understood abelian group by a highly non-trivial group closely tied up with groups of diffeomorphisms. The analysis of this latter group as well as the interpretation of the renormalization group and of anomalous dimensions are the content of our second paper with the same overall title.

  3. Thinking Problems of the Present Collision Warning Work by Analyzing the Intersection Between Cosmos 2251 and Iridium 33

    NASA Astrophysics Data System (ADS)

    Wang, R. L.; Liu, W.; Yan, R. D.; Gong, J. C.

    2013-08-01

    After Cosmos 2251 and Iridium 33 collision breakup event, the institutions at home and abroad began the collision warning analysis for the event. This paper compared the results from the different research units and discussed the problems of the current collision warning work, then gave the suggestions of further study.

  4. The roles of the convex hull and the number of potential intersections in performance on visually presented traveling salesperson problems.

    PubMed

    Vickers, Douglas; Lee, Michael D; Dry, Matthew; Hughes, Peter

    2003-10-01

    The planar Euclidean version of the traveling salesperson problem requires finding the shortest tour through a two-dimensional array of points. MacGregor and Ormerod (1996) have suggested that people solve such problems by using a global-to-local perceptual organizing process based on the convex hull of the array. We review evidence for and against this idea, before considering an alternative, local-to-global perceptual process, based on the rapid automatic identification of nearest neighbors. We compare these approaches in an experiment in which the effects of number of convex hull points and number of potential intersections on solution performance are measured. Performance worsened with more points on the convex hull and with fewer potential intersections. A measure of response uncertainty was unaffected by the number of convex hull points but increased with fewer potential intersections. We discuss a possible interpretation of these results in terms of a hierarchical solution process based on linking nearest neighbor clusters.

  5. Infertility in Poland--present status, reasons and prognosis as a reflection of Central and Eastern Europe problems with reproduction.

    PubMed

    Sanocka, Dorota; Kurpisz, Maciej

    2003-03-01

    Poland has been considered a representative country for the population of Central and Eastern Europe as it has genetically homogenous population and reveals profound similarities in economical and historical processes common for all countries of the region. According to our observations there is approximately 20% of infertile couples in Poland (lack of concentration after at least 12 month of unprotected intercourse) and 40-60% of them are infertile because of the male factor. However, studies of infertility in Poland that have been conducted so far need to be verified. The changes connected with the style of life and new tendencies observed during the tedious political changes had considerable influence on childbearing rate in Poland. Additional factors diminishing the fertility rate are: the change of the status of women in a society, raising amount of everyday stress, the high rate (17%) of unemployment and the low average income. Furthermore, in Poland, the diagnostics and treatment (assisted reproductive technology) are entirely financed from the private funds of a patient. Summing up, the problem of childlessness in Central and Eastern Europe is a complex one and very alarming therefore it is necessary to work out and to implement research, preventative and therapeutic programmes strengthened through the international cooperation of specialized centers of excellence.

  6. ‘What brings him here today?’: Medical problem presentation involving children with Autism Spectrum Disorders and typically developing children

    PubMed Central

    Solomon, Olga; Heritage, John; Yin, Larry; Marynard, Douglas; Bauman, Margaret

    2015-01-01

    Conversation and discourse analyses were used to examine medical problem presentation in pediatric care. Healthcare visits involving children with ASD and typically developing children were analyzed. We examined how children’s communicative and epistemic capabilities and their opportunities to be socialized into a competent patient role are interactionally achieved. We found that medical problem presentation is designed to contain a ‘pre-visit’ account of the interactional and epistemic work that children and caregivers carry out at home to identify the child’s health problems; and that the intersubjective accessibility of children’s experiences that becomes disrupted by ASD presents a dilemma to all participants in the visit. The article examines interactional roots of unmet healthcare needs and foregone medical care of people with ASD. PMID:26463739

  7. Landau ghost pole problem in quantum field theory: From 50th of last century to the present day

    NASA Astrophysics Data System (ADS)

    Jafarov, Rauf G.; Mutallimov, Mutallim M.

    2016-03-01

    In this paper we present our results of the investigation of asymptotical behavior of amplitude at short distances in four-dimensional scalar field theory with ϕ4 interaction. To formulate of our calculating model - two-particle approximation of the mean-field expansion we have used an Rochev's iteration scheme of solution of the Schwinger-Dyson equations with the fermion bilocal source. We have considered the nonlinear integral equations in deep-inelastic region of momenta. As result we have a non-trivial behavior of amplitude at large momenta.

  8. The "Human Subject," "Vulnerable Populations," and Medical History: The Problem of Presentism and the Discourse of Bioethics.

    PubMed

    Connor, J T H

    2017-02-15

    This discussion considers recent historical works of eugenics and sterilization in Canada, but it is not an historiographic review essay or critique per se of this literature. Rather, by focussing on the topic of historic diagnostic categories such as "feeble-minded," "idiot," and "moron," methodological issues such as historical presentism and its possible interactions with the discourse of modern bioethics are examined. The conclusions derived are meant only to be cautionary, and are neither prescriptive nor proscriptive. Medical historians undertaking analyses of currently contentious topics that may directly involve or indirectly allude to "human subjects" or "vulnerable populations" perhaps ought to reflect on the degree, if any, they may be anachronistically writing contemporary bioethical categories into bygone eras.

  9. A System for the Presentation of A Concept-Learning Problem to Fifth- and Sixth-Grade Children. Research and Development Memorandum No. 51.

    ERIC Educational Resources Information Center

    Paulson, F. Leon

    The purpose of this report is to describe a systematic method of presenting a concept-learning problem to grade school children. Each child is tested individually. He is introduced to the concepts of size, shape, color, number of forms, and color of border on 2 by 3 inch cards in a practice book. He is then acquainted with a classificatory rule.…

  10. Comparing Psychology Undergraduates' Performance in Probabilistic Reasoning under Verbal-Numerical and Graphical-Pictorial Problem Presentation Format: What Is the Role of Individual and Contextual Dimensions?

    ERIC Educational Resources Information Center

    Agus, Mirian; Peró-Cebollero, Maribel; Penna, Maria Pietronilla; Guàrdia-Olmos, Joan

    2015-01-01

    This study aims to investigate about the existence of a graphical facilitation effect on probabilistic reasoning. Measures of undergraduates' performances on problems presented in both verbal-numerical and graphical-pictorial formats have been related to visuo-spatial and numerical prerequisites, to statistical anxiety, to attitudes towards…

  11. L'Education des Adultes et les Problemes de Main-D'Oeuvre (Adult Education and Manpower Problems). Les Cahiers de L'I.C.E., 6-7.

    ERIC Educational Resources Information Center

    Canadian Inst. for Adult Education, Montreal (Quebec).

    The impact of continuing education on the complex problems encountered in developing and implementing overall manpower policies is discussed and documented in this anthology. An introductory chapter on adult education and the labor force is followed by surveys and critiques of manpower policy and the organization of the labor market in Sweden, the…

  12. Iodine-131 metaiodobenzylguanidine (I-131 MIBG) diagnosis and therapy of pheochromocytoma and paraganglioma: current problems, critical issues and presentation of a sample case.

    PubMed

    Castellani, M R; Aktolun, C; Buzzoni, R; Seregni, E; Chiesa, C; Maccauro, M; Aliberti, G L; Vellani, C; Lorenzoni, A; Bombardieri, E

    2013-06-01

    Iodine-131 metaiodobenzylguanidine (I-131 MIBG) has been used for the diagnosis and treatment of malignant pheochromocytomas (PHEO) and paragangliomas (PGL) since 1980's. Despite increasing amount of experience with iodine-131 (I-131) MIBG therapy, many important questions still exist. In this article, we will discuss the current problems learned from clinical experience in diagnosis and therapy of PHEO/PGL with I-131 MIBG, and present a sample case to emphasize the critical aspects for an optimal treatment strategy.

  13. Main Report

    PubMed Central

    2006-01-01

    scientific literature. The criteria were distributed among three main categories for each condition: The availability and characteristics of the screening test;The availability and complexity of diagnostic services; andThe availability and efficacy of treatments related to the conditions. A survey process utilizing a data collection instrument was used to gather expert opinion on the conditions in the first tier of the assessment. The data collection format and survey provided the opportunity to quantify expert opinion and to obtain the views of a diverse set of interest groups (necessary due to the subjective nature of some of the criteria). Statistical analysis of data produced a score for each condition, which determined its ranking and initial placement in one of three categories (high scoring, moderately scoring, or low scoring/absence of a newborn screening test). In the second tier of these analyses, the evidence base related to each condition was assessed in depth (e.g., via systematic reviews of reference lists including MedLine, PubMed and others; books; Internet searches; professional guidelines; clinical evidence; and cost/economic evidence and modeling). The fact sheets reflecting these analyses were evaluated by at least two acknowledged experts for each condition. These experts assessed the data and the associated references related to each criterion and provided corrections where appropriate, assigned a value to the level of evidence and the quality of the studies that established the evidence base, and determined whether there were significant variances from the survey data. Survey results were subsequently realigned with the evidence obtained from the scientific literature during the second-tier analysis for all objective criteria, based on input from at least three acknowledged experts in each condition. The information from these two tiers of assessment was then considered with regard to the overriding principles and other technology or condition

  14. Helicopter problems

    NASA Technical Reports Server (NTRS)

    Kussner, H G

    1937-01-01

    The present report deals with a number of the main problems requiring solution in the development of helicopters and concerning the lift, flying performance, stability, and drive. A complete solution is given for the stability of the helicopter with rigid blades and control surfaces. With a view to making a direct-lift propeller sufficient without the addition of auxiliary propellers, the "flapping drive" is assessed and its efficiency calculated.

  15. Marine Occupations Conference (Southern Maine Vocational Technical Institute, South Portland, Maine, April 5, 1974). Maine Sea Grant Bulletin 9.

    ERIC Educational Resources Information Center

    Coggins, Phyllis, Ed.; And Others

    This collection of speeches, presented as the 1974 Marine Occupations Conference in South Portland, Maine, provides an overview of information regarding availability and kinds of careers in, as well as the educational requirements for, marine occupations. Also reviewed are the problems of developing marine resources, such as those involving…

  16. [The mind -- body problem].

    PubMed

    Pérez, Diana I

    2005-01-01

    In this paper I present, in the first place, two of the main problems in the philosophy of mind: 1) the problem of the criteria of the mental, and 2) the problem of the relationship between the mental and the physical. In the last part, I mention two problems highly discussed nowadays which, in my view, will produce the most important advance in the knowledge of our minds in the next decades: the problem of consciousness and its neural basis, and the problem of the origin and development of a theory of mind.

  17. Bearing design - Historical aspects, present technology and future problems; Proceedings of the International Conference, San Francisco, CA, August 18-21, 1980

    NASA Technical Reports Server (NTRS)

    Anderson, W. J.

    1980-01-01

    The considered investigations deal with some of the more important present day and future bearing requirements, and design methodologies available for coping with them. Solutions to many forthcoming bearing problems lie in the utilization of the most advanced materials, design methods, and lubrication techniques. Attention is given to materials for rolling element bearings, numerical analysis techniques and design methodology for rolling element bearing load support systems, lubrication of rolling element bearings, journal bearing design for high speed turbomachinery, design and energy losses in the case of turbulent flow bearings, and fluid film bearing response to dynamic loading.

  18. Prevalence and characters of Entamoeba histolytica infection in Saudi infants and children admitted with diarrhea at 2 main hospitals at South Jeddah: a re-emerging serious infection with unusual presentation.

    PubMed

    Hegazi, Moustafa Abdelaal; Patel, Tabarek Ahmed; El-Deek, Basem Salama

    2013-01-01

    In this study, Entamoeba histolytica had high prevalence and unusual presentation by affecting high proportion of infants under 1 year; severe clinical manifestations, and laboratory findings that were known to be usually encountered in invasive amebiasis as significant leukocytosis for age, neutrophilic leukocytosis for age, and positive C-reactive protein were found among more than 50% of admitted Saudi infants and children with E. histolytica infection in our locality. E. histolytica can be a re-emerging serious infection when it finds favorable environmental conditions and host factors which are mainly attributed to inadequate breastfeeding in this study. This may occur in any other area of the world with the same risk factors, so we must be ready to tackle it with effective and more powerful preventive measures.

  19. [A new computerized system for electroencephalography at the Kochi Medical School Hospital: the present status and problems of electroencephalogram data filing systems].

    PubMed

    Doi, T; Kataoka, H; Nishida, M; Sasaki, M

    1990-06-01

    The usual electroencephalography (EEG) recording consumes great amounts of paper, considerable storage space for records and much time and energy for their search and retrieval. In addition, we can not perform digitized analyses of the records with the present method. To solve these problems, our laboratory developed a new computerized system for EEG, in which data are retained in optic disks, and which has been in service for routine examination since December, 1988. The functions of the system and EEG filing system, include the collection, retention, retrieval, transmission and analyses of data with the reproduction of the original EEG and editing function of summary reports to be filed in the medical records. The summary report consists of summary, characteristic wave patterns picked up and edited from EEG, and spectral array and topographical mapping by digitized analyses of EEG. The condition for the collection of EEG data was 200 Hz/8 bit, and the reproduced wave patterns were accepted by all clinicians. The merits of the system include; (i) saving of paper, space and time needed for EEG, (ii) enabling the comparison of the wave patterns in the form of summary reports and (iii) the capability of digitized analyses of EEG by retaining the EEG data in the data base. The problems remaining to be improved for the system are the longer time required for examination (5-10 min) and the higher running cost (yen 460/order). Regarding the latter problem, a revised method which dispenses with recording paper is under consideration. That is, in the case of screening examinations, summary reports for medical records alone would be delivered to clinicians. This idea has been accepted by some clinicians. To realize the revised system, we presently are planning to establish a method to display EEG on CRT.

  20. An analysis of abstracts presented to the College on Problems of Drug Dependence meeting and subsequent publication in peer review journals

    PubMed Central

    Valderrama-Zurián, Juan Carlos; Bolaños-Pizarro, Máxima; Bueno-Cañigral, Francisco Jesús; Álvarez, F Javier; Ontalba-Ruipérez, José Antonio; Aleixandre-Benavent, Rafael

    2009-01-01

    Background Subsequent publication rate of abstracts presented at meetings is seen as an indicator of the interest and quality of the meeting. We have analyzed characteristics and rate publication in peer-reviewed journals derived from oral communications and posters presented at the 1999 College on Problems of Drug Dependence (CPDD) meeting. Methods All 689 abstracts presented at the 1999 CPDD meeting were reviewed. In order to find the existence of publications derived from abstracts presented at that meeting, a set of bibliographical searches in the database Medline was developed in July 2006. Information was gathered concerning the abstracts, articles and journals in which they were published. Results 254 out of 689 abstracts (36.9%) gave rise to at least one publication. The oral communications had a greater likelihood of being published than did the posters (OR = 2.53, 95% CI 1.80-3.55). The average time lapse to publication of an article was 672.97 days. The number of authors per work in the subsequent publications was 4.55. The articles were published in a total of 84 journals, of which eight were indexed with the subject term Substance-Related Disorders. Psychopharmacology (37 articles, 14.5%) was the journal that published the greatest number of articles subsequent to the abstracts presented at the 1999 CPDD meeting. Conclusion One out of every three abstracts presented to the 1999 CPDD meeting were later published in peer-reviewed journals indexed in Medline. The subsequent publication of the abstracts presented in the CPDD meetings should be actively encouraged, as this maximizes the dissemination of the scientific research and therefore the investment. PMID:19889211

  1. Comparative study on the measurement of learning outcomes after powerpoint presentation and problem based learning with discussion in family medicine amongst fifth year medical students

    PubMed Central

    Khobragade, Sujata; Abas, Adinegara Lutfi; Khobragade, Yadneshwar Sudam

    2016-01-01

    Background: Learning outcomes after traditional teaching methods were compared with problem-based learning (PBL) among fifth year medical students. Six students participated each in traditional teaching and PBL methods, respectively. Traditional teaching method involved PowerPoint (PPT) presentation and PBL included study on case scenario and discussion. Both methods were effective in improving performance of students. Postteaching, we did not find significant differences in learning outcomes between these two teaching methods. Aims: (1) Study was conducted with an intention to find out which method of learning is more effective; traditional or PBL. (2) To assess the level of knowledge and understanding in anemia/zoonotic diseases as against diabetes/hypertension. Settings and Design: All the students posted from February 3, 2014, to March 14, 2014, participated in this study. Six students were asked to prepare and present a lecture (PPT) and subsequent week other six students were asked to present PBL. Both groups presented different topics. Since it was a pre- and post-test, same students were taken as control. To maintain uniformity and to avoid bias due cultural diversity, language etc., same questions were administered. Materials and Methods: After taking verbal consent, all 34 students were given pretest on anemia and zoonotic diseases. Then lecture (PPT) by six students on the same topic was given it followed by posttest questionnaire. Subsequent week pretest was conducted on hypertension and diabetes. Then case scenario presentation and discussion (PBL) was done by different six students followed by posttest. Both the methods were compared. Statistical Analysis: Analysis was done manually and standard error of means and students t-test was used to find out statistical significance. Results: We found statistically significant improvement in performance of students after PPT presentation as well as PBL. Both methods are equally effective. However, Pretest

  2. Te Ira Tangata: A Zelen randomised controlled trial of a treatment package including problem solving therapy compared to treatment as usual in Maori who present to hospital after self harm

    PubMed Central

    2011-01-01

    Background Maori, the indigenous people of New Zealand, who present to hospital after intentionally harming themselves, do so at a higher rate than non-Maori. There have been no previous treatment trials in Maori who self harm and previous reviews of interventions in other populations have been inconclusive as existing trials have been under powered and done on unrepresentative populations. These reviews have however indicated that problem solving therapy and sending regular postcards after the self harm attempt may be an effective treatment. There is also a small literature on sense of belonging in self harm and the importance of culture. This protocol describes a pragmatic trial of a package of measures which include problem solving therapy, postcards, patient support, cultural assessment, improved access to primary care and a risk management strategy in Maori who present to hospital after self harm using a novel design. Methods We propose to use a double consent Zelen design where participants are randomised prior to giving consent to enrol a representative cohort of patients. The main outcome will be the number of Maori scoring below nine on the Beck Hopelessness Scale. Secondary outcomes will be hospital repetition at one year; self reported self harm; anxiety; depression; quality of life; social function; and hospital use at three months and one year. Discussion A strength of the study is that it is a pragmatic trial which aims to recruit Maori using a Maori clinical team and protocol. It does not exclude people if English is not their first language. A potential limitation is the analysis of the results which is complex and may underestimate any effect if a large number of people refuse their consent in the group randomised to problem solving therapy as they will effectively cross over to the treatment as usual group. This study is the first randomised control trial to explicitly use cultural assessment and management. Trial registration Australia and New

  3. A new protocol for screening adults presenting with their own medical problems at the Emergency Department to identify children at high risk for maltreatment.

    PubMed

    Diderich, Hester M; Fekkes, Minne; Verkerk, Paul H; Pannebakker, Fieke D; Velderman, Mariska Klein; Sorensen, Peggy J G; Baeten, Paul; Oudesluys-Murphy, Anne Marie

    2013-12-01

    Identifying child abuse and neglect solely on the grounds of child characteristics leaves many children undetected. We developed a new approach (Hague protocol) based on characteristics of parents who attend the Emergency Department (ED) because they have the following problems: (1) intimate partner violence, (2) substance abuse, or (3) suicide attempt or other serious psychiatric problems. The goal of this protocol is to enable the Reporting Center for Child Abuse and Neglect (RCCAN) to rapidly assess family problems and offer voluntary community based support to these parents. The aim of this study is to assess whether this protocol for screening adults presenting for care in the Emergency Department can identify children at high risk for maltreatment. A before and after study was conducted at 9 EDs in 3 regions in the Netherlands (one intervention region and 2 control regions). During the period January 2006 to November 2007, prior to the introduction of the Hague protocol, from a total of 385,626 patients attending the ED in the intervention region 4 parents (1 per 100,000) were referred to the RCCAN. In the period after introduction of the protocol (December 2007 to December 2011), the number rose to 565 parents from a total of 885,301 patients attending the ED (64 per 100,000). In the control region, where the protocol was not implemented, these figures were 2 per 163,628 (1 per 100,000) and 10 per 371,616 (3 per 100,000) respectively (OR=28.0 (95 CI 4.6-170.7)). At assessment, child abuse was confirmed in 91% of referred cases. The protocol has a high positive predictive value of 91% and can substantially increase the detection rate of child abuse in an ED setting. Parental characteristics are strong predictors of child abuse. Implementing guidelines to detect child abuse based on parental characteristics of parents attending the adult section of the ED can increase the detection rate of child abuse and neglect allowing appropriate aid to be initiated for

  4. [Present Execution of and Problems with Clinical Lipid Examination and Application of "the Japan Atherosclerotic Society (JAS) Guidelines for Prevention of Atherosclerotic Cardiovascular Diseases 2012"].

    PubMed

    Igarashi, Masahiko; Tanji, Yasuhiro; Nomura, Takashi; Yamaguchi, Hiroshi

    2014-09-01

    It is well known that dyslipidemia is one of the most crucial risk factors for atherosclerosis, including cardiovascular diseases (ASCVD). In order to prevent the onset of ASCVD, the Japan Atherosclerotic Society (JAS) published the JAS Guidelines in 2012 for appropriate lipid examination and treatment. However, it is unknown how the guidelines are practically used by Japanese clinicians. Therefore, we conducted a questionnaire survey to assess the present execution of and problems with clinical lipid examination and the application of the JAS Guidelines by doctors working in hospitals and clinics of Yamagata district in Japan. We found that 16% of doctors carried out clinical lipid examination every time, but some did not examine lipids at all. Fasting blood sampling for lipid examination was performed by 44% of doctors, and the items of triglycerides, HDL-cholesterol (HDL-C), and LDL-cholesterol (LDL-C) were measured by more than 95%. Regarding problems with clinical lipid examination, more than 40% of doctors requested the early achievement of the standardization of LDL-C. The JAS Guidelines in 2012 were unfortunately recognized by only 55% of doctors. In addition, the rate of the clinical application of the guidelines, including the absolute risk, the flowchart of LDL-C, and non-HDL-C, was less than 30%, and more than half of the doctors measured LDL-C with the direct method, but did not use the "recommended" Friedewald method. In contrast, the cardiologists and endocrinologists generally accepted the guidelines, and their clinical application rate was higher than in other doctors. Through the questionnaire survey, it was revealed that doctors in various fields have not properly accepted the use and significance of lipid examination and the JAS Guidelines, and so further educational activities are necessary.

  5. Ladybugs of Maine

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Color images are presented for the 57 species of Coccinellidae, commonly known as ladybugs, that are documented from Maine. Images are displayed in taxonomic order. Information on each species includes its genus-species name, length, and an actual-size silhouette beside a grid matched to the scale...

  6. The Relationship of Mode of Presentation and of School/Community Differences to the Ability of Kindergarten Children to Comprehend Simple Story Problems.

    ERIC Educational Resources Information Center

    Lindvall, C. Mauritz; Ibarra, Cheryl Gibbons

    The extent to which kindergarten children are able to solve simple quantitative problems merely through the application of counting procedures, before they receive formal instruction in any basic arithmetic operations, is investigated. The study indicates that most kindergarten children can comprehend simple story problems of the type used in…

  7. Iatrogenic Effects of Group Treatment on Adolescents with Conduct and Substance Use Problems: A Review of the Literature and a Presentation of a Model

    PubMed Central

    Macgowan, Mark J.; Wagner, Eric F.

    2010-01-01

    Summary Group therapy is the most popular approach in the treatment of adolescent substance use problems. Recently, concerns have mounted about possible iatrogenic effects of group therapy based on studies on adolescents with conduct disorder. This paper reviews three possible contributors to response to group treatment among adolescents, and proposes a model of the relations among these variables, specifically in regard to how they independently and interactively contribute to outcomes among youth with conduct and substance use problems. PMID:20396587

  8. Problems, policies and politics: A comparative case study of contraband tobacco from the 1990s to the present in the Canadian context.

    PubMed

    Schwartz, Robert; Johnson, Teela

    2010-09-01

    Contraband tobacco has been and continues to be a global public health policy concern, with special manifestations in Canada. Over the past 20 years, in two noteworthy instances the Canadian government has battled contraband - in the early 1990s, and for much of the past decade. In the 1990s, when contraband cigarettes flooded the Canadian market, the government rapidly responded, using policy measures such as implementing a tobacco export tax and cutting domestic sales tax. Unfortunately, contraband made a strong comeback in recent years, but this time the government has hesitated to act, owing to a change in the source of the contraband. Using John Kingdon's streams theory to frame our arguments, we suggest that lack of congruence between different policy stakeholder groups' perceptions of the problem, policy solutions, and political feasibility has road-blocked the implementation of anti-contraband policy in the 2000s.

  9. An Overview of Mission 21. A Program Designed To Assist Teachers in Integrating Technology into Their Present Curriculum through a Problem-Solving Approach. Grades 1 through 6.

    ERIC Educational Resources Information Center

    Brusic, Sharon A.; And Others

    This booklet presents an overview of Mission 21, a project that promotes technological literacy in the elementary school classroom. Funded since 1985, Mission 21 has enabled graduate research associates and Virginia teachers to write and field test a technology education program for children in grades 1 through 6. Over 30 elementary teachers in 11…

  10. [Embolism of the aortic bifurcation and major arteries of limbs: lessons of the past and present-day trends in solving the problem concerned].

    PubMed

    Mel'nikov, M V; Barsukov, A E; Apresian, A Iu; Isaulov, O V

    2013-01-01

    The works deals with a retrospective analysis of the medical records of the Clinic of General Surgery of the North-West State Medical University named after I.I. Mechnikov on treatment of patients presenting with embolism of the aorta and major arteries over 40 years. All in all, over the period from 1971 to 2010 a total of 3,110 patients with embolism of the aorta and major arteries underwent consultations and were operated on. To the present-day trends in surgery of embologenic arterial obstruction one should first of all refer a decrease in the number of patients with embolism of the aorta and major arteries of the limbs, which may be related to achievement in modern cardiology and cardiosurgery in treatment of patients with cardiovascular diseases - potential sources of arterial embolism. Besides, there occurred considerable changes in the structure of embologenic diseases, in favour of an increased number of people suffering from CAD, which to e certain degree modified the incidence of lesions of various vascular basins. Thus, the number of embolisms of proximal portions of the vascular bed decreased considerably. This is largely related to a decrease in the number of patients presenting with decompensated ischaemia of extremities. 86.9% of patients were subjected to emergency operations. An increased number of people with atherosclerosis of peripheral arteries required widening of indications for performing reconstructive-and-plastic operative interventions. Experience of the Clinic shows that a timely performed revascularizing operation, including a reconstructive on, application of modern methods of prevention of ischaemic syndrome, carrying out comprehensive rehabilitation measures in the postoperative period made it possible to considerably improve the immediate results of treatment. While during the first 20 years a total lethality rate amounted to 18.8% with the postoperative one equalling 17.1%, these parameters over the past 10 years were 8.8% and 6

  11. The Fermilab Main Injector

    SciTech Connect

    Mishra, C.S.

    1992-11-01

    The Fermilab Main Injector is a new 150 GeV proton synchrotron, designed to replace the Main Ring and improve the high energy physics potential of Fermilab. The status of the Fermilab accelerator complex upgrade will be discussed.

  12. IDH mutant diffuse and anaplastic astrocytomas have similar age at presentation and little difference in survival: a grading problem for WHO.

    PubMed

    Reuss, David E; Mamatjan, Yasin; Schrimpf, Daniel; Capper, David; Hovestadt, Volker; Kratz, Annekathrin; Sahm, Felix; Koelsche, Christian; Korshunov, Andrey; Olar, Adriana; Hartmann, Christian; Reijneveld, Jaap C; Wesseling, Pieter; Unterberg, Andreas; Platten, Michael; Wick, Wolfgang; Herold-Mende, Christel; Aldape, Kenneth; von Deimling, Andreas

    2015-06-01

    The WHO 2007 classification of tumors of the CNS distinguishes between diffuse astrocytoma WHO grade II (A II(WHO2007)) and anaplastic astrocytoma WHO grade III (AA III(WHO2007)). Patients with A II(WHO2007) are significantly younger and survive significantly longer than those with AA III(WHO2007). So far, classification and grading relies on morphological grounds only and does not yet take into account IDH status, a molecular marker of prognostic relevance. We here demonstrate that WHO 2007 grading performs poorly in predicting prognosis when applied to astrocytoma carrying IDH mutations. Three independent series including a total of 1360 adult diffuse astrocytic gliomas with IDH mutation containing 683 A II(IDHmut), 562 AA III(IDHmut) and 115 GBM(IDHmut) have been examined for age distribution and survival. In all three series patients with A II(IDHmut )and AA III(IDHmut) were of identical age at presentation of disease (36-37 years) and the difference in survival between grades was much less (10.9 years for A II(IDHmut), 9.3 years for AA III(IDHmut)) than that reported for A II(WHO2007) versus AA III(WHO2007). Our analyses imply that the differences in age and survival between A II(WHO2007) and AA III(WHO2007) predominantly depend on the fraction of IDH-non-mutant astrocytomas in the cohort. This data poses a substantial challenge for the current practice of astrocytoma grading and risk stratification and is likely to have far-reaching consequences on the management of patients with IDH-mutant astrocytoma.

  13. [Main parasitic skin disorders].

    PubMed

    Bernigaud, C; Monsel, G; Delaunay, P; Do-Pham, G; Foulet, F; Botterel, F; Chosidow, O

    2017-01-01

    Cutaneous parasitic skin diseases are frequent in human pathology. There are few reliable epidemiological data on the prevalence and/or incidence of such diseases. Skin parasites are cosmopolitan but their global distribution is heterogenous; prevalence is especially high in subtropical and tropical countries. They are mainly due to arthropods (insects and mites). Many species of parasites are involved, explaining the diversity of their clinical signs. The most common are caused by ectoparasites such as scabies or pediculosis (head lice, body lice and pubic lice). Clinical signs may be related to the penetration of the parasite under the skin, its development, the inoculation of venom or allergic symptoms. Diagnosis can be easy when clinical signs are pathognomonic (e.g. burrows in the interdigital web spaces in scabies) or sometimes more difficult. Some epidemiological characteristics (diurnal or nocturnal bite, seasonality) and specific clinical presentation (single or multiple bites, linear or grouped lesions) can be a great diagnostic help. Modern non-invasive tools (dermoscopy or confocal microscopy) will play an important role in the future but the eye and experience of the specialist (dermatologist, parasitologist, infectious disease specialist or entomologist) remains for the time the best way to guide or establish a diagnosis. For most skin parasites, therapeutic proposals are rarely based on studies of high level of evidence or randomized trials but more on expert recommendations or personal experience.

  14. The Maine Event

    ERIC Educational Resources Information Center

    McHale, Tom

    2007-01-01

    In this article, the author describes the successful laptop program employed at Mt. Abram High School in Strong, Maine. Through the Maine Learning Technology Initiative, the school has issued laptops to all 36,000 teachers and students in grades 7-8. This program has helped level the playing field for a student population that is 50 percent to 55…

  15. Teaching Main Idea Comprehension.

    ERIC Educational Resources Information Center

    Baumann, James F., Ed.

    Intended to help classroom teachers, curriculum developers, and researchers, this book provides current information on theoretical and instructional aspects of main idea comprehension. Titles and authors are as follows: "The Confused World of Main Idea" (James W. Cunningham and David W. Moore); "The Comprehension of Important…

  16. Maine's Employability Skills Program

    ERIC Educational Resources Information Center

    McMahon, John M.; Wolffe, Karen E.; Wolfe, Judy; Brooker, Carrie

    2013-01-01

    This Practice Report describes the development and implementation of the "Maine Employability Skills Program," a model employment program developed by the Maine Division for the Blind and Visually Impaired (DBVI). The program was designed to support the efforts of the chronically unemployed or underemployed. These consumers were either…

  17. 'Can he have the test for bipolar, doctor? His dad's got it': exploring the potential of general practitioners to work with children and young people presenting in primary care with common mental health problems - a clinical initiative.

    PubMed

    Roberts, Jane H; Bernard, Paul M

    2012-06-01

    Background General practitioners (GPs) play a key role in assessing and managing adult mental health problems, but this input is not seen in their management of child and adolescent mental health. Mental health problems in 5-19-year-olds are common, yet detection rates in primary care are low. The symptoms of most adult diagnoses of mental health problems are present by mid-adolescence, yet the typical time from onset to diagnosis is 5-15 years. The role of general practice in this area has been underexplored. Aim This pilot study explores the potential of GPs to respond to common mental health problems in children and adolescents. Design Children and young people who would have ordinarily been referred to Child and Adolescent Mental Health Services (CAMHS) were seen in a GP setting. In a UK general practice surgery serving a disadvantaged population. Method Children and young people were seen for an initial biopsychosocial assessment and formulation of the presenting concerns. GP-based interventions were offered as appropriate or referred to CAMHS. Results Data from the first 50 children (2-19 years) are presented. Twenty younger children (10 years and under) and 30 older children (11 years and above) were seen. Eighteen referrals were made to CAMHS. GP interventions included watchful waiting, brief behavioural interventions, non-directive counselling, brief cognitive- behavioural therapy (CBT) and liaison with colleagues in education, CAMHS and the voluntary sector. Conclusion This clinical pilot demonstrates that with adequate time, access to supervision and practice support, children and young people experiencing emotional and behavioural problems associated with common mental health issues can be helped in primary care.

  18. ‘Can he have the test for bipolar, doctor? His dad's got it’: exploring the potential of general practitioners to work with children and young people presenting in primary care with common mental health problems – a clinical initiative

    PubMed Central

    2012-01-01

    Background General practitioners (GPs) play a key role in assessing and managing adult mental health problems, but this input is not seen in their management of child and adolescent mental health. Mental health problems in 5–19-year-olds are common, yet detection rates in primary care are low. The symptoms of most adult diagnoses of mental health problems are present by mid-adolescence, yet the typical time from onset to diagnosis is 5–15 years. The role of general practice in this area has been underexplored. Aim This pilot study explores the potential of GPs to respond to common mental health problems in children and adolescents. Design Children and young people who would have ordinarily been referred to Child and Adolescent Mental Health Services (CAMHS) were seen in a GP setting. In a UK general practice surgery serving a disadvantaged population. Method Children and young people were seen for an initial biopsychosocial assessment and formulation of the presenting concerns. GP-based interventions were offered as appropriate or referred to CAMHS. Results Data from the first 50 children (2–19 years) are presented. Twenty younger children (10 years and under) and 30 older children (11 years and above) were seen. Eighteen referrals were made to CAMHS. GP interventions included watchful waiting, brief behavioural interventions, non-directive counselling, brief cognitive– behavioural therapy (CBT) and liaison with colleagues in education, CAMHS and the voluntary sector. Conclusion This clinical pilot demonstrates that with adequate time, access to supervision and practice support, children and young people experiencing emotional and behavioural problems associated with common mental health issues can be helped in primary care. PMID:23730336

  19. The Vector Decomposition Problem

    NASA Astrophysics Data System (ADS)

    Yoshida, Maki; Mitsunari, Shigeo; Fujiwara, Toru

    This paper introduces a new computational problem on a two-dimensional vector space, called the vector decomposition problem (VDP), which is mainly defined for designing cryptosystems using pairings on elliptic curves. We first show a relation between the VDP and the computational Diffie-Hellman problem (CDH). Specifically, we present a sufficient condition for the VDP on a two-dimensional vector space to be at least as hard as the CDH on a one-dimensional subspace. We also present a sufficient condition for the VDP with a fixed basis to have a trapdoor. We then give an example of vector spaces which satisfy both sufficient conditions and on which the CDH is assumed to be hard in previous work. In this sense, the intractability of the VDP is a reasonable assumption as that of the CDH.

  20. Main Pipelines Corrosion Monitoring Device

    NASA Astrophysics Data System (ADS)

    Anatoliy, Bazhenov; Galina, Bondareva; Natalia, Grivennaya; Sergey, Malygin; Mikhail, Goryainov

    2017-01-01

    The aim of the article is to substantiate the technical solution for the problem of monitoring corrosion changes in oil and gas pipelines with use (using) of an electromagnetic NDT method. Pipeline wall thinning under operating conditions can lead to perforations and leakage of the product to be transported outside the pipeline. In most cases there is danger for human life and environment. Monitoring of corrosion changes in pipeline inner wall under operating conditions is complicated because pipelines are mainly made of structural steels with conductive and magnetic properties that complicate test signal passage through the entire thickness of the object under study. The technical solution of this problem lies in monitoring of the internal corrosion changes in pipes under operating conditions in order to increase safety of pipelines by automated prediction of achieving the threshold pre-crash values due to corrosion.

  1. Antidote: Civic Responsibility. Maine Law.

    ERIC Educational Resources Information Center

    Phi Alpha Delta Law Fraternity International, Washington, DC.

    Designed for middle school through high school students, this unit contains eight lesson plans that focus on Maine state law. The state lessons correspond to lessons in the volume, "Antidote: Civic Responsibility. Drug Avoidance Lessons for Middle School & High School Students." Developed to be presented by educators, law student, or…

  2. 1 Main Street, Mars

    NASA Technical Reports Server (NTRS)

    1997-01-01

    Located outside StenniSphere, the visitor center at John C. Stennis Space Center, 1 Main Street Mars is a model of how a habitat on Mars might look. Complete with thermometers, scales and clocks set to Martian equivalents, this exhibit shows how very different life on Mars can be.

  3. Main features of meiosis

    SciTech Connect

    1993-12-31

    Chapter 17, outlines the main features of meiosis, beginning with its significance and proceeding through the meiotic stages. Meiosis is the most important modification of mitosis because it is the reduction division that gives rise to the haploid generation in the life cycle. 17 refs., 6 figs.

  4. IMPROVEMENT OF WATER MAIN INSPECTION TECHNOLOGY

    EPA Science Inventory

    This document is a handout of a slide presentation that addresses improvement of water main inspection technology. The slide presentation addresses the need for improved inspection technology (e.g., 237,000 main breaks/yr); the limits on main break prevention; and, the adverse ...

  5. Maine coast winds

    SciTech Connect

    Avery, Richard

    2000-01-28

    The Maine Coast Winds Project was proposed for four possible turbine locations. Significant progress has been made at the prime location, with a lease-power purchase contract for ten years for the installation of turbine equipment having been obtained. Most of the site planning and permitting have been completed. It is expect that the turbine will be installed in early May. The other three locations are less suitable for the project, and new locations are being considered.

  6. COBRA Main Engine Project

    NASA Technical Reports Server (NTRS)

    Snoddy, Jim; Sides, Steve; Lyles, Garry M. (Technical Monitor)

    2002-01-01

    The COBRA (CO-Optimized Booster for Reusable Applications) project include the following: 1. COBRA main engine project team. 2. COBRA and RLX cycles selected. 3. COBRA proto-type engine approach enables mission success. 4. COBRA provides quick, low cost demo of cycle and technologies. 5. COBRA cycle I risk reduction supports. 6. Achieving engine safety. 6. RLX cycle I risk reduction supports. 7. Flight qualification. 9. Life extension engine testing.

  7. Exploring Main Belt Asteroids

    NASA Astrophysics Data System (ADS)

    Sykes, M. V.; Larson, S. M.; Whiteley, R.; Fink, U.; Jedicke, R.; Emery, J.; Fevig, R.; Kelley, M.; Harris, A. W.; Ostro, S.; Reed, K.; Binzel, R. P.; Rivkin, A.; Magri, C.; Bottke, W.; Durda, D.; Walker, R.; Davis, D.; Hartmann, W. K.; Sears, D.; Yano, H.; Granahan, J.; Storrs, A.; Bus, S. J.; Bell, J. F.; Tholen, D.; Cellino, A.

    2001-11-01

    Terrestrial planet formation in the main asteroid belt was interrupted when growing protoplanets became sufficiently massive to gravitationally perturb the local population, causing bodies to collide with increased energy, thus ending accretion and commencing fragmentation and disruption. Few of these protoplanets are thought to have survived unshattered (e.g., Ceres, Vesta, Pallas), leaving a main belt population dominated by fragments of fragments, and significantly depleted of mass as a consequence of dynamical scattering. Yet, these fragments retain a record of the early steps of planet formation and evolution, as well as a record of early solar system conditions and the primordial composition gradient in that region. By exploring main belt asteroids through groundbased observations and spacecraft, modeling and theoretical work, we seek ultimately to recover this information. A single mission to a single target is not sufficient to address, in isolation, these questions. They require a foundation of robust, broad, and continuing groundbased, theoretical, and modeling programs. Such work is funded at a small fraction of a typical mission cost through the NASA Research and Analysis Program. Therefore, within the context of planetary decadal study recommendations to NASA, highest priority needs to be given to maintaining and growing a healthy R&A program over the next ten years and beyond. Missions also have an important role to play. An Earth orbiting remote sensing mission needs to be considered as a means of collecting important data for a large fraction of all main belt asteroids above a sub-kilometer diameter (while also realizing synergistic benefits to astrophysics). Missions to specific main belt targets can provide important new insights and leverage new understanding of existing data, models, and theories, but target definition (and corresponding instrument complement) is critical and must be based on our existing knowledge of these very diverse objects

  8. (Mainly) axion dark matter

    NASA Astrophysics Data System (ADS)

    Baer, Howard

    2016-06-01

    The strong CP problem of QCD is at heart a problem of naturalness: why is the FF ˜ term highly suppressed in the QCD Lagrangian when it seems necessary to explain why there are three and not four light pions? The most elegant solution posits a spontaneously broken Peccei-Quinn (PQ) symmetry which requires the existence of the axion field a. The axion field settles to the minimum of its potential thus removing the offensive term but giving rise to the physical axion whose coherent oscillations can make up the cold dark matter. Only now are experiments such as ADMX beginning to explore QCD axion parameter space. Since a bonafide scalar particle- the Higgs boson- has been discovered, one might expect its mass to reside at the axion scale fa ˜ 1011 GeV. The Higgs mass is elegantly stabilized by supersymmetry: in this case the axion is accompanied by its axino and saxion superpartners. Requiring naturalness also in the electroweak sector implies higgsino-like WIMPs so then we expect mixed axion-WIMP dark matter. Ultimately we would expect detection of both an axion and a WIMP while signals for light higgsinos may show up at LHC and must show up at ILC.

  9. An overview of unconstrained free boundary problems

    PubMed Central

    Figalli, Alessio; Shahgholian, Henrik

    2015-01-01

    In this paper, we present a survey concerning unconstrained free boundary problems of type where B1 is the unit ball, Ω is an unknown open set, F1 and F2 are elliptic operators (admitting regular solutions), and is a functions space to be specified in each case. Our main objective is to discuss a unifying approach to the optimal regularity of solutions to the above matching problems, and list several open problems in this direction. PMID:26261367

  10. Delivery presentations

    MedlinePlus

    ... page: //medlineplus.gov/ency/patientinstructions/000621.htm Delivery presentations To use the sharing features on this page, ... baby by cesarean birth (C-section) . Less Common Presentations With the brow-first position, the baby's head ...

  11. Aquarius Main Structure Configuration

    NASA Technical Reports Server (NTRS)

    Eremenko, Alexander

    2012-01-01

    The Aquarius/SAC-D Observatory is a joint US-Argentine mission to map the salinity at the ocean surface. This information is critical to improving our understanding of two major components of Earth's climate system - the water cycle and ocean circulation. By measuring ocean salinity from space, the Aquarius/SAC-D Mission will provide new insights into how the massive natural exchange of freshwater between the ocean, atmosphere and sea ice influences ocean circulation, weather and climate. Aquarius is the primary instrument on the SAC-D spacecraft. It consists of a Passive Microwave Radiometer to detect the surface emission that is used to obtain salinity and an Active Scatterometer to measure the ocean waves that affect the precision of the salinity measurement. The Aquarius Primary Structure houses instrument electronics, feed assemblies, and supports a deployable boom with a 2.5 m Reflector, and provides the structural interface to the SAC-D Spacecraft. The key challenge for the Aquarius main structure configuration is to satisfy the needs of component accommodations, ensuring that the instrument can meet all operational, pointing, environmental, and launch vehicle requirements. This paper describes the evolution of the Aquarius main structure configuration, the challenges of balancing the conflicting requirements, and the major configuration driving decisions and compromises.

  12. Illicit Drug Use and Problem Gambling

    PubMed Central

    Wayne Skinner, W. J.; Matheson, Flora I.

    2013-01-01

    Problem gambling, substance use disorders, and their cooccurrence are serious public health concerns. We conducted a comprehensive review of the literature to understand the present state of the evidence on these coaddictions. Our main focus was illicit drug use rather than misuse of legal substances. The review covers issues related to gambling as a hidden problem in the illicit drug use community; prevalence, problem gambling, and substance use disorders as kindred afflictions; problem gambling as an addiction similar to illicit drug use; risk factors and problems associated with comorbidity, and gender issues. We end with some suggestions for future research. PMID:25938114

  13. Main Oxidizer Valve Design

    NASA Technical Reports Server (NTRS)

    Addona, Brad; Eddleman, David

    2015-01-01

    A developmental Main Oxidizer Valve (MOV) was designed by NASA-MSFC using additive manufacturing processes. The MOV is a pneumatically actuated poppet valve to control the flow of liquid oxygen to an engine's injector. A compression spring is used to return the valve to the closed state when pneumatic pressure is removed from the valve. The valve internal parts are cylindrical in shape, which lends itself to traditional lathe and milling operations. However, the valve body represents a complicated shape and contains the majority of the mass of the valve. Additive manufacturing techniques were used to produce a part that optimized mass and allowed for design features not practical with traditional machining processes.

  14. Left Main Coronary Artery Aneurysm

    PubMed Central

    Doustkami, Hossein; Maleki, Nasrollah; Tavosi, Zahra

    2016-01-01

    Aneurysms of the left main coronary artery are exceedingly rare clinical entities, encountered incidentally in approximately 0.1% of patients who undergo routine angiography. The most common cause of coronary artery aneurysms is atherosclerosis. Angiography is the gold standard for diagnosis and treatment. Depending on the severity of the coexisting coronary stenosis, patients with left main coronary artery aneurysms can be effectively managed either surgically or pharmacologically. We herein report a case of left main coronary artery aneurysm in a 72-year-old man with a prior history of hypertension presenting to our hospital because of unstable angina. The electrocardiogram showed ST-segment depression and T-wave inversion in the precordial leads. All the data of blood chemistry were normal. Echocardiography showed akinetic anterior wall, septum, and apex, mild mitral regurgitation and ejection fraction of 45%. Coronary angiography revealed a saccular aneurysm of the left main coronary artery with significant stenosis in the left anterior descending, left circumflex, and right coronary artery. The patient immediately underwent coronary artery bypass grafting and ligation of the aneurysm. At six months’ follow-up, he remained asymptomatic. PMID:27403190

  15. Information Presentation

    NASA Technical Reports Server (NTRS)

    Holden, Kritina; Sandor, A.; Thompson, S. G.; McCann, R. S.; Kaiser, M. K.; Begault, D. R.; Adelstein, B. D.; Beutter, B. R.; Stone, L. S.

    2008-01-01

    The goal of the Information Presentation Directed Research Project (DRP) is to address design questions related to the presentation of information to the crew on flight vehicles, surface landers and habitats, and during extra-vehicular activities (EVA). Designers of displays and controls for exploration missions must be prepared to select the text formats, label styles, alarms, electronic procedure designs, and cursor control devices that provide for optimal crew performance on exploration tasks. The major areas of work, or subtasks, within the Information Presentation DRP are: 1) Controls, 2) Displays, 3) Procedures, and 4) EVA Operations.

  16. How Individuals Feel About the Past, Present, and Future Bears Little Relation to Alcohol-Related Problems, Anxiety, and Depression: A Person-Centered Analysis in a University Sample.

    PubMed

    McKay, Michael T; Andretta, James R; Cole, Jon C

    2017-02-03

    Previous studies using bivariate or correlational analyses have established a relationship between alcohol use, symptoms of anxiety and depression, and scores on a range of temporal psychology measures. Temporal psychology measures variously assess the cognitive or affective (or in some cases, both) engagement with the past, present, and future. Although developed and validated in adolescents, recent research has suggested that the Time Attitudes Scale is internally consistent and reliable in adults also. The present study is the first to apply a person-centered approach to assessing the relationship between scores on the Time Attitudes Scale and symptoms of anxiety, depression, and alcohol-related problems in adults. Participants were recruited from a University in England. Results support the validity and internal consistency of the Time Attitudes Scale. Meaningful time attitudes profiles emerged, however, taking the sample size into account, the only substantive finding showed that those with a negative time attitudes profile scored higher on depressive symptomatology than those with a positive profile. While elsewhere, Zimbardo Time Perspective Inventory scores have been shown to be meaningfully related to anxiety, depression and alcohol use, the present study questions the degree to which the affective dimension of temporal psychology is driving that relationship.

  17. Information Presentation

    NASA Technical Reports Server (NTRS)

    Holden, Kritina L.; Thompson, Shelby G.; Sandor, Aniko; McCann, Robert S.; Kaiser, Mary K.; Adelstein, Barnard D.; Begault, Durand R.; Beutter, Brent R.; Stone, Leland S.; Godfroy, Martine

    2009-01-01

    The goal of the Information Presentation Directed Research Project (DRP) is to address design questions related to the presentation of information to the crew. In addition to addressing display design issues associated with information formatting, style, layout, and interaction, the Information Presentation DRP is also working toward understanding the effects of extreme environments encountered in space travel on information processing. Work is also in progress to refine human factors-based design tools, such as human performance modeling, that will supplement traditional design techniques and help ensure that optimal information design is accomplished in the most cost-efficient manner. The major areas of work, or subtasks, within the Information Presentation DRP for FY10 are: 1) Displays, 2) Controls, 3) Procedures and Fault Management, and 4) Human Performance Modeling. The poster will highlight completed and planned work for each subtask.

  18. Conservation Presentation.

    ERIC Educational Resources Information Center

    Friday, Gerald

    2001-01-01

    Introduces a project in which students teach about the importance of recycling and conservation by presenting demonstrations. Includes demonstrations on water, plastic, and other recycling products such as steel. (YDS)

  19. Information Presentation

    NASA Technical Reports Server (NTRS)

    Holden, K.L.; Boyer, J.L.; Sandor, A.; Thompson, S.G.; McCann, R.S.; Begault, D.R.; Adelstein, B.D.; Beutter, B.R.; Stone, L.S.

    2009-01-01

    The goal of the Information Presentation Directed Research Project (DRP) is to address design questions related to the presentation of information to the crew. The major areas of work, or subtasks, within this DRP are: 1) Displays, 2) Controls, 3) Electronic Procedures and Fault Management, and 4) Human Performance Modeling. This DRP is a collaborative effort between researchers at Johnson Space Center and Ames Research Center.

  20. Anaplasmosis and ehrlichiosis - Maine, 2008.

    PubMed

    2009-09-25

    Anaplasmosis and ehrlichiosis are rickettsial tickborne diseases that have had at least a twofold increase in prevalence in the United States since 2000. Despite similar clinical presentations, the causative organisms are carried by different ticks with distinct geographic and ecologic associations. Surveillance efforts are complicated by ambiguous terminology and serologic testing with antibody cross-reactivity. Although anaplasmosis historically has been reported in Maine, ehrlichiosis has been reported infrequently. During 2007-2008, the number of physician-reported anaplasmosis cases nearly doubled in Maine, and ehrlichiosis cases increased more than fourfold. To examine this increase, the Maine Department of Health and Human Services (MDHHS) analyzed available data on tick burden and physician-reported cases of anaplasmosis and ehrlichiosis during 2000-2008. This report describes the results of that analysis, which indicated that Ixodes scapularis (the tick vector for Anaplasma phagocytophilum) was broadly distributed in Maine, whereas Amblyomma americanum (the tick vector for Erhlichia chaffeenisis) was scarce. Moreover, 95% of physician-reported ehrlichiosis cases lacked a concurrent serologic assessment to exclude anaplasmosis, suggesting that antibody cross-reactivity might have resulted in misclassification. In 2008, Maine modified case classification to enhance specificity; ehrlichiosis cases that lack a concurrent test for anaplasmosis are now classified as suspect rather than probable and therefore are not included in national surveillance summaries. The accuracy of case classification and surveillance can be improved by educating health-care providers regarding 1) the expected geographic distribution of tick vectors and 2) recommendations for confirmatory testing to distinguish between the causative organisms of anaplasmosis and ehrlichiosis.

  1. On alphabetic presentations of Clifford algebras and their possible applications

    NASA Astrophysics Data System (ADS)

    Toppan, Francesco; Verbeek, Piet W.

    2009-12-01

    In this paper, we address the problem of constructing a class of representations of Clifford algebras that can be named "alphabetic (re)presentations." The Clifford algebra generators are expressed as m-letter words written with a three-character or a four-character alphabet. We formulate the problem of the alphabetic presentations, deriving the main properties and some general results. At the end, we briefly discuss the motivations of this work and outline some possible applications.

  2. Identifying problem and compulsive gamblers.

    PubMed Central

    van Es, R.

    2000-01-01

    OBJECTIVE: To present a meta-analysis of current research on the prevalence, identification, and treatment of problem and compulsive gamblers. QUALITY OF EVIDENCE: Problem and compulsive gambling was not a socio-scientific concern until the last two decades. Hence research on this topic is limited. The summary and analysis for this paper relied on computer searches of journal and news abstracts in addition to direct contact with organizations addressing the identification and treatment of compulsive gamblers. MAIN MESSAGE: An estimated 5% of those who gamble run into problems. About 1% of those who gamble are predicted to experience serious problems. Successful treatment of problem and compulsive gambling continues to be a challenge. Although cognitive therapy has been the favoured approach, a combination of several therapeutic approaches is advocated. CONCLUSIONS: Problem and compulsive gambling can present a real health threat. As with other addictions, treatment strategies continue to be a baffling social problem. Aware and informed physicians can have a pivotal role in the difficult process of identifying, acknowledging, and remediating problem and compulsive gambling. PMID:10907572

  3. Presentation Skills.

    ERIC Educational Resources Information Center

    Burt, Lorna; And Others

    This guide is intended for use in an eight-session course designed to develop the presentation skills required of persons employed in the manufacturing and service industries. The course is structured so that, upon its completion, students will be able to accomplish the following: identify the traits of good and bad speakers; research and organize…

  4. [Problems connected with sexual activity in patients with heart disease].

    PubMed

    Rembek, Magdalena; Tylkowski, Michał; Piestrzeniewicz, Katarzyna; Goch, Jan Henryk

    2007-08-01

    The paper presents some basic data on sexual activity in patients with heart disease. The most typical problems of people with stable angina or after myocardial infarction connected with sexual intercourse have been presented. Modulation of risk of heart attack during sexual activity and main problems of sexual dysfunction after acute coronary syndromes have been described.

  5. PROBLEMS OF MIGRANT LABOR.

    ERIC Educational Resources Information Center

    WALLS, FOREST

    PRESENT MIGRANT LABOR PROBLEMS AND SOLUTIONS WHICH HAVE BEEN PROPOSED ARE PRESENTED. THE FIRST PROBLEM AREA IS PROVIDING EDUCATION FOR MIGRANT CHILDREN. THIS IS HINDERED BY THE PROBLEM OF SECURING COMPLIANCE WITH MINIMUM EDUCATION LAWS AND BY LAWS PROHIBITING EMPLOYMENT OF CHILDREN DURING SCHOOL HOURS. A SECOND PROBLEM AREA IS THAT OF CHILD LABOR.…

  6. Overview Presentation

    NASA Technical Reports Server (NTRS)

    Lytle, John

    2001-01-01

    This report provides an overview presentation of the 2000 NPSS (Numerical Propulsion System Simulation) Review and Planning Meeting. Topics include: 1) a background of the program; 2) 1999 Industry Feedback; 3) FY00 Status, including resource distribution and major accomplishments; 4) FY01 Major Milestones; and 5) Future direction for the program. Specifically, simulation environment/production software and NPSS CORBA Security Development are discussed.

  7. Off-Reservation Indian Survey [Maine].

    ERIC Educational Resources Information Center

    Sockabasin, Allen J., Comp; Stone, John G., Comp.

    The needs of the off-reservation Indian population in Maine and recommendations for the correction of these needs are discussed. The program's objectives were (1) to determine the present level of services available to off-reservation Indians in Maine, (2) to determine present housing standards, educational levels, health programs, and geographic…

  8. Problem Solving

    ERIC Educational Resources Information Center

    Kinsella, John J.

    1970-01-01

    Discussed are the nature of a mathematical problem, problem solving in the traditional and modern mathematics programs, problem solving and psychology, research related to problem solving, and teaching problem solving in algebra and geometry. (CT)

  9. Challenging Aerospace Problems for Intelligent Systems

    NASA Technical Reports Server (NTRS)

    Krishnakumar, Kalmanje; Kanashige, John; Satyadas, A.; Clancy, Daniel (Technical Monitor)

    2002-01-01

    In this paper we highlight four problem domains that are well suited and challenging for intelligent system technologies. The problems are defined and an outline of a probable approach is presented. No attempt is made to define the problems as test cases. In other words, no data or set of equations that a user can code and get results are provided. The main idea behind this paper is to motivate intelligent system researchers to examine problems that will elevate intelligent system technologies and applications to a higher level.

  10. [Some problems of space medicine].

    PubMed

    Gurovskiĭ, N N; Egorov, A D

    1976-01-01

    The paper discusses the problems to be resolved by space medicine and the main stages in the development of this branch of science, beginning with the vertical launches of rockets and ending with the flights of orbital stations. On the basis of ground-based simulation experiments and real space flights it presents a classification of the major symptomocomplexes that may occur inflight. The paper describes the main stages of adaptation to weightlessness and physiological changes in the weightless state. The paper also outlines further pathways in the development of space medicine.

  11. 22. View showing main anchor arm, as viewed from main ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. View showing main anchor arm, as viewed from main cantilever arm looking south. Note upper chord eyebar arrangement. - Williamstown-Marietta Bridge, Spanning Ohio River between Williamstown & Marietta, Williamstown, Wood County, WV

  12. 6. MAIN AND SOUTH BAYS. DETAIL OF TOP OF MAIN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. MAIN AND SOUTH BAYS. DETAIL OF TOP OF MAIN BAY COLUMN, GIRDER FOR ELECTRIC OVERHEAD TRAVEL CRANE, AND ROOF GIRDERS - Oldman Boiler Works, Fabricating Shop, 32 Illinois Street, Buffalo, Erie County, NY

  13. Balance Problems

    MedlinePlus

    ... often, it could be a sign of a balance problem. Balance problems can make you feel unsteady or as ... fall-related injuries, such as hip fracture. Some balance problems are due to problems in the inner ...

  14. Space shuttle main engine controller

    NASA Technical Reports Server (NTRS)

    Mattox, R. M.; White, J. B.

    1981-01-01

    A technical description of the space shuttle main engine controller, which provides engine checkout prior to launch, engine control and monitoring during launch, and engine safety and monitoring in orbit, is presented. Each of the major controller subassemblies, the central processing unit, the computer interface electronics, the input electronics, the output electronics, and the power supplies are described and discussed in detail along with engine and orbiter interfaces and operational requirements. The controller represents a unique application of digital concepts, techniques, and technology in monitoring, managing, and controlling a high performance rocket engine propulsion system. The operational requirements placed on the controller, the extremely harsh operating environment to which it is exposed, and the reliability demanded, result in the most complex and rugged digital system ever designed, fabricated, and flown.

  15. STS-3 main parachute failure

    NASA Technical Reports Server (NTRS)

    Runkle, R.; Henson, K.

    1982-01-01

    A failure analysis of the parachute on the Space Transportation System 3 flight's solid rocket booster's is presented. During the reentry phase of the two Solid Rocket Boosters (SRBs), one 115 ft diameter main parachute failed on the right hand SRB (A12). This parachute failure caused the SRB to impact the Ocean at 110 ft/sec in lieu of the expected 3 parachute impact velocity of 88 ft/sec. This higher impact velocity relates directly to more SRB aft skirt and more motor case damage. The cause of the parachute failure, the potential risks of losing an SRB as a result of this failure, and recommendations to ensure that the probability of chute failures of this type in the future will be low are discussed.

  16. Quadratic eigenvalue problems.

    SciTech Connect

    Walsh, Timothy Francis; Day, David Minot

    2007-04-01

    In this report we will describe some nonlinear eigenvalue problems that arise in the areas of solid mechanics, acoustics, and coupled structural acoustics. We will focus mostly on quadratic eigenvalue problems, which are a special case of nonlinear eigenvalue problems. Algorithms for solving the quadratic eigenvalue problem will be presented, along with some example calculations.

  17. Total main rotor isolation system analysis

    NASA Technical Reports Server (NTRS)

    Sankewitsch, V.

    1981-01-01

    Requirements, preliminary design, and verification procedures for a total main rotor isolation system at n/rev are presented. The fuselage is isolated from the vibration inducing main rotor at one frequency in all degrees of freedom by four antiresonant isolation units. Effects of parametric variations on isolation system performance are evaluated.

  18. Inverse spectral problems for differential operators on spatial networks

    NASA Astrophysics Data System (ADS)

    Yurko, V. A.

    2016-06-01

    A short survey is given of results on inverse spectral problems for ordinary differential operators on spatial networks (geometrical graphs). The focus is on the most important non-linear inverse problems of recovering coefficients of differential equations from spectral characteristics when the structure of the graph is known a priori. The first half of the survey presents results related to inverse Sturm-Liouville problems on arbitrary compact graphs. Results on inverse problems for differential operators of arbitrary order on compact graphs are then presented. In the conclusion the main results on inverse problems on non-compact graphs are given. Bibliography: 55 titles.

  19. Distributed PV Adoption in Maine Through 2021

    SciTech Connect

    Gagnon, Pieter; Sigrin, Ben

    2015-11-06

    NREL has used its dSolar (distributed solar) model to generate low-medium-high estimates of distributed PV adoption in Maine through 2021. This presentation gives a high-level overview of the model and modeling results.

  20. Nancy Main Henley (1934-2016).

    PubMed

    Rutherford, Alexandra; Dean, Karol

    2016-12-01

    Presents an obituary for Nancy Main Henley who passed away on June 4, 2016, in Maryland. Henley was a feminist trailblazer who conducted influential work on gender, communication, and power. (PsycINFO Database Record

  1. Interview at a Small Maine School.

    ERIC Educational Resources Information Center

    Cartwright, Sally

    1991-01-01

    Presents an interview with the founder and director of the Riley School in Maine in which she discusses the school's educational philosophy and practices, curriculum design, and physical plant design. (BB)

  2. The Maine Approach: A Treatment Model for The Intellectually Limited Substance Abuser.

    ERIC Educational Resources Information Center

    Maine State Dept. of Mental Health and Mental Retardation, Augusta.

    The document presents Maine's model for providing substance abuse treatment to the client with mental retardation. Introductory information on retardation and substance abuse is followed by a discussion of this population's unique problems. Services offered in the Mental Retardation Alcoholism project are reviewed, and contracts and cooperative…

  3. Total left main coronary artery occlusion after aortic aneurysm repair and valve replacement.

    PubMed

    DePace, N L; Lemole, G M; Wolf, N W; Dowinsky, S; Untereker, W; Spagna, P M

    1991-02-01

    A 38-year-old woman with complete occlusion of the left main coronary artery secondary to cannulation during aortic valve replacement is presented. The clinical course was characterized by progressive left ventricular dysfunction and congestive heart failure. Recognition of this potential problem when it occurs is important as to institute therapeutic measures which may interrupt a patient's progressive clinical deterioration.

  4. Transition crossing in the main injector

    SciTech Connect

    Wei, J.

    1990-01-01

    This report summarizes the study of various longitudinal problems pertaining to the transition-energy crossing in the proposed Fermi Lab Main Injector. The theory indicates that the beam loss and bunch-area growth are mainly caused by the chromatic non-linear effect, which is enhanced by the space-charge force near transition. Computer simulation using the program TIBETAN shows that a {gamma}{sub T} jump'' of about 1.5 unit within 1 ms is adequate to achieve a clean'' crossing in the currently proposed h{equals}588 scenario. 19 refs., 4 figs.

  5. Topics and Terms in Environmental Problems.

    ERIC Educational Resources Information Center

    Holum, John R.

    This reference is an expanded glossary of topics and terms currently related to environmental problems. These topics and terms are associated with energy, air pollution, water pollution, wastes, and pesticides. Included are 239 main entries ranging from acaricide to weathering. Each entry briefly describes the topic or term and often presents a…

  6. Vehicle routing problem in investment fund allocation

    NASA Astrophysics Data System (ADS)

    Mamat, Nur Jumaadzan Zaleha; Jaaman, Saiful Hafizah; Ahmad, Rokiah Rozita; Mohd, Ismail

    2013-04-01

    Since its introduction by Dantzig and Ramser in 1959, vehicle routing problem keeps evolving in theories, applications and variability. The evolution in computing and technology are also important contributors to research in solving vehicle routing problem. The main sectors of interests among researchers and practitioners for vehicle routing problem are transportation, distribution and logistics. However, literature found that concept and benefits of vehicle routing problem are not taken advantages of by researchers in the field of investment. Other methods found used in investment include multi-objective programming, linear programming, goal programming and integer programming. Yet the application of vehicle routing problem is not fully explored. A proposal on a framework of the fund allocation optimization using vehicle routing problem is presented here. Preliminary results using FTSE Bursa Malaysia data testing the framework are also given.

  7. Thermographic Leak Detection of the Space Shuttle Main Engine Nozzle

    NASA Technical Reports Server (NTRS)

    Walker, James L.; Russell, Samuel S.

    1999-01-01

    The Space Shuttle Main Engines Nozzles consist of over one thousand tapered Inconel coolant tubes brazed to a stainless steel structural jacket. Liquid Hydrogen flows through the tubing, from the aft to forward end of the nozzle, under high pressure to maintain a thermal balance between the rocket exhaust and the nozzle wall. Three potential problems occur within the SSME nozzle coolant tubes as a result of manufacturing anomalies and the highly volatile service environment including poor or incomplete bonding of the tubes to the structural jacket, cold wall leaks and hot wall leaks. Of these conditions the identification of cold wall leaks has been the most problematic. The methods and results presented in this summary addresses the thermographic identification of cold wall "interstitial" leaks between the structural jacket and coolant tubes of the Space Shuttle Main Engines Nozzles.

  8. View of the main interior space facing east. The main ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View of the main interior space facing east. The main entry is on the left hand side at the rear. The exit to the deck is to the right. - San Luis Yacht Club, Avila Pier, South of Front Street, Avila Beach, San Luis Obispo County, CA

  9. 18. MAIN FLOOR HOLDING TANKS Main floor, looking at ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. MAIN FLOOR - HOLDING TANKS Main floor, looking at holding tanks against the west wall, from which sluice gates are seen protruding. Right foreground-wooden holding tanks. Note narrow wooden flumes through which fish were sluiced into holding and brining tanks. - Hovden Cannery, 886 Cannery Row, Monterey, Monterey County, CA

  10. Balance Problems

    MedlinePlus

    ... version of this page please turn Javascript on. Balance Problems About Balance Problems Have you ever felt dizzy, lightheaded, or ... dizziness problem during the past year. Why Good Balance is Important Having good balance means being able ...

  11. Optimization and geophysical inverse problems

    SciTech Connect

    Barhen, J.; Berryman, J.G.; Borcea, L.; Dennis, J.; de Groot-Hedlin, C.; Gilbert, F.; Gill, P.; Heinkenschloss, M.; Johnson, L.; McEvilly, T.; More, J.; Newman, G.; Oldenburg, D.; Parker, P.; Porto, B.; Sen, M.; Torczon, V.; Vasco, D.; Woodward, N.B.

    2000-10-01

    or distance from a prior model. Various other constraints may also be imposed upon the process. Inverse problems are not restricted to geophysics, but can be found in a wide variety of disciplines where inferences must be made on the basis of indirect measurements. For instance, most imaging problems, whether in the field of medicine or non-destructive evaluation, require the solution of an inverse problem. In this report, however, the examples used for illustration are taken exclusively from the field of geophysics. The generalization of these examples to other disciplines should be straightforward, as all are based on standard second-order partial differential equations of physics. In fact, sometimes the non-geophysical inverse problems are significantly easier to treat (as in medical imaging) because the limitations on data collection, and in particular on multiple views, are not so severe as they generally are in geophysics. This report begins with an introduction to geophysical inverse problems by briefly describing four canonical problems that are typical of those commonly encountered in geophysics. Next the connection with optimization methods is made by presenting a general formulation of geophysical inverse problems. This leads into the main subject of this report, a discussion of methods for solving such problems with an emphasis upon newer approaches that have not yet become prominent in geophysics. A separate section is devoted to a subject that is not encountered in all optimization problems but is particularly important in geophysics, the need for a careful appraisal of the results in terms of their resolution and uncertainty. The impact on geophysical inverse problems of continuously improving computational resources is then discussed. The main results are then brought together in a final summary and conclusions section.

  12. Maine: Early Head Start Initiatives

    ERIC Educational Resources Information Center

    Center for Law and Social Policy, Inc. (CLASP), 2012

    2012-01-01

    Maine has two initiatives that build on Early Head Start (EHS). The first initiative, Fund for a Healthy Maine, has since 2001 provided tobacco settlement money to existing Head Start and EHS programs to expand the number of children who receive full-day, full-year services. Local programs have the option of using these funds for EHS, depending on…

  13. Maine Indians: A Brief Summary.

    ERIC Educational Resources Information Center

    1971

    The Indians of Maine, descendants of Algonquian linguistic stock, number approximately 1800 and reside on 3 reservations totalling 22,600 acres of land. Most of the reservation land is forested, with important economic and recreational advantages in terms of timber production and hunting and fishing opportunities. In 1965, Maine became the first…

  14. Maine Agricultural Foods. Project SEED.

    ERIC Educational Resources Information Center

    Beaulieu, Peter; Ossenfort, Pat

    This paper describes an activity-based program that teaches students in grades 4-12 about the importance of Maine agriculture in their lives. Specifically, the goal is to increase student awareness of how the foods they eat are planted, harvested, and processed. The emphasis is on crops grown in Maine such as potatoes, broccoli, peas, blueberries,…

  15. Main Propulsion Test Article (MPTA)

    NASA Technical Reports Server (NTRS)

    Snoddy, Cynthia

    2010-01-01

    Scope: The Main Propulsion Test Article integrated the main propulsion subsystem with the clustered Space Shuttle Main Engines, the External Tank and associated GSE. The test program consisted of cryogenic tanking tests and short- and long duration static firings including gimbaling and throttling. The test program was conducted on the S1-C test stand (Position B-2) at the National Space Technology Laboratories (NSTL)/Stennis Space Center. 3 tanking tests and 20 hot fire tests conducted between December 21 1 1977 and December 17, 1980 Configuration: The main propulsion test article consisted of the three space shuttle main engines, flightweight external tank, flightweight aft fuselage, interface section and a boilerplate mid/fwd fuselage truss structure.

  16. Substance Abuse Prevention: Maine's 1997 Data Report. County Profiles on Risk and Protection for Substance Abuse Prevention Planning.

    ERIC Educational Resources Information Center

    Maine State Dept. of Mental Health and Mental Retardation, Augusta.

    This document presents uniformly collected data for the State of Maine and each of its counties on selected known risk factors for alcohol and drug abuse and the prevalence of substance abuse-related problems. A "Read Me First" section presents the state's approach to prevention. Information is provided on risk and protective factors,…

  17. Problems of Indian Children.

    ERIC Educational Resources Information Center

    Linton, Marigold

    Previous approaches to the learning problems of American Indian children are viewed as inadequate. An alternative is suggested which emphasizes the problem solution strategies which these children bring to the school situation. Solutions were analyzed in terms of: (1) their probability; (2) their efficiency at permitting a present problem to be…

  18. Exploratory Problems in Mathematics.

    ERIC Educational Resources Information Center

    Stevenson, Frederick W.

    This book attempts to introduce students to the creative aspects of mathematics through exploratory problems. The introduction presents the criteria for the selection of the problems in the book. Criteria indicate that problems should: be immediately attractive, require data to be generated or gathered, appeal to students from junior high school…

  19. Space Shuttle Era: Main Engines

    NASA Video Gallery

    Producing 500,000 pounds of thrust from a package weighing only 7,500 pounds, the Space Shuttle Main Engines are one of the shining accomplishments of the shuttle program. The success did not come ...

  20. LSRA with Shuttle main gear

    NASA Technical Reports Server (NTRS)

    1993-01-01

    A space shuttle landing gear system is visible between the two main landing gear components on this NASA CV-990, modified as a Landing Systems Research Aircraft. The space shuttle landing gear test unit, operated by a high-pressure hydraulic system, allowed engineers to assess and document the performance of space shuttle main and nose landing gear systems, tires and wheel assemblies, plus braking and nose wheel steering performance.

  1. On electromagnetic field problems in inhomogeneous media

    NASA Technical Reports Server (NTRS)

    Mohsen, A.

    1973-01-01

    Analysis of electromagnetic fields in inhomogeneous media is of practical interest in general scattering and propagation problems and in the study of lenses. For certain types of inhomogeneities, the fields may be represented in terms of two scalars. In a general orthogonal coordinate system, these potentials satisfy second order differential equations. Exact solutions of these equations are known only for a few particular cases and in general, an approximate or numerical technique must be employed. The present work reviews and generalizes some of the main methods of attack of the problem. The results are presented in a form appropriate for numerical computation.

  2. Manned expedition to Mars: concepts & problems.

    PubMed

    Strogonova, L B; Leonid, G

    1991-01-01

    In this article presents general concept of interplanetary spacecraft and bio-medical aspect of long interplanetary flight, the problems of technical supply for their solving. Presents version of the programme of the flight to Mars. This paper discusses the main specific factors of the flight: after long duration of being in the microgravity state, the men are subjected to the pressure of lineary and shock overload, augmented radiation, caused by crossing Earth radiation belts possible solar flares and the influence of galactic space radiation, and etc. The concept biomedical problems and technical supply for their solving are schematic reflected in tables 1, 2, 3, 4.

  3. Nuclear power station main control room habitability

    SciTech Connect

    Paschal, W.B.; Knous, W.S. )

    1989-01-01

    The main control room at a nuclear power station must remain habitable during a variety of plant conditions and postulated events. The control room habitability requirement and the function of the heating, ventilating, air-conditioning, and air treatment system are to control environmental factors, such as temperature, pressure, humidity, radiation, and toxic gas. Habitability requirements provide for the safety of personnel and enable operation of equipment required to function in the main control room. Habitability as an issue has been gaining prominence with the Advisor Committee of Reactor Safeguards and the Nuclear Regulatory Commission since the incident at Three Mile Island. Their concern is the ability of the presently installed habitability systems to control the main control room environment after an accident. This paper discusses main control room HVAC systems; the concern, requirements, and results of NRC surveys and notices; and an approach to control room habitability reviews.

  4. Creating Presentations on ICT Classes

    ERIC Educational Resources Information Center

    Marchis, Iuliana

    2010-01-01

    The article focuses on the creation of presentations on ICT classes. The first part highlights the most important steps when creating a presentation. The main idea is, that the computer presentation shouldn't consist only from the technological part, i.e. the editing of the presentation in a computer program. There are many steps before and after…

  5. Walking Problems

    MedlinePlus

    ... Parkinson's disease Diseases such as arthritis or multiple sclerosis Vision or balance problems Treatment of walking problems depends on the cause. Physical therapy, surgery, or mobility aids may help.

  6. Orbital evolution of the main Uranian satellites

    NASA Astrophysics Data System (ADS)

    Verheylewegen, E.; Noyelles, B.

    2011-10-01

    Since Voyager 2 space mission, we know some properties of the main Uranian satellites (Miranda, Ariel, Umbriel, Titania, Oberon): on the one hand, we observe an important resurfacing of both Miranda and Ariel, and on the other hand some strangenesses in the orbital elements such as the anomalously high inclinaison of Miranda or the anomalously high eccentricity of Ariel. The aim of this study is to use some modern methods including advances in computing resources to revise some studies developed in the last 20 years (see for instance [1], [2], [3], [4]). We therefore consider a model of a n-body problem which takes into account of the mutual perturbations of the five main satellites and of the planet Uranus and meet/improve some previous results.

  7. Practice and Problems in Language Testing 5. Non-Classical Test Theory; Final Examinations in Secondary Schools. Papers Presented at the International Language Testing Symposium (5th, Arnhem, Netherlands, March 25-26, 1982).

    ERIC Educational Resources Information Center

    van Weeren, J., Ed.

    Presented in this symposium reader are nine papers, four of which deal with the theory and impact of the Rasch model on language testing and five of which discuss final examinations in secondary schools in both general and specific terms. The papers are: "Introduction to Rasch Measurement: Some Implications for Language Testing" (J. J.…

  8. Analysis of the integration of the physician rostering problem and the surgery scheduling problem.

    PubMed

    Van Huele, Christophe; Vanhoucke, Mario

    2014-06-01

    In this paper, we present the Integrated Physician and Surgery Scheduling Problem (IPSSP) as a new approach for solving operating room scheduling problems where staff rosters for the physicians are integrated in the optimization. A mixed integer linear programming formulation is created based on the most frequently observed objective and restrictions of the surgery scheduling and the physician rostering problem in the literature. We analyze schedules by relaxing both surgery and physician related constraints. We then measure the implications of setting these physician preferences on the surgery schedule. Our experiments show two main interesting insights for physician roster schedulers as well as operating theatre scheduling managers.

  9. Maine's Balance of Representation: Information and Results

    ERIC Educational Resources Information Center

    Maine Department of Education, 2003

    2003-01-01

    This document, a companion to the "LAS Guide Principles and Criteria for the Adoption of Local Assessment Systems," [ED484135] presents results that are intended to provide Maine's school administrative units with an option for selecting sample performance indicators to be assessed through the Local Assessment System to meet the…

  10. Maine's Families: Poverty Despite Work.

    ERIC Educational Resources Information Center

    Lazere, Edward B.

    Children are among the poorest of Maine's residents. Nearly 1 in 5 children under the age of 18, 19.3%, lived in families below the federal poverty line in the early 1990s. Most of these poor children lived in working families. The working poor are often missing from policy debates, but their numbers are likely to increase with welfare reform…

  11. Maine's Approach to Global Education.

    ERIC Educational Resources Information Center

    Broyles, India L.; Krawic, Joanne

    This study of Maine schools inquires into efforts that have been made to internationalize the curriculum. Specifically, the researchers were interested in how curricular goals and organization contribute to an understanding of global society. The efforts to internationalize the curriculum upon which the researchers focused included the…

  12. The Problems of Problem Solving

    ERIC Educational Resources Information Center

    Watson, Charles E.

    1976-01-01

    Discusses some common pitfalls in problem-solving and outlines three basic approaches to successfully identifying problems and their causes. (Available from Business Horizons, School of Business, Indiana University, Bloomington, Indiana 47401; $2.50, single copy) (Author/JG)

  13. A model for routing problem in quay management problem

    NASA Astrophysics Data System (ADS)

    Zirour, Mourad; Oughalime, Ahmed; Liong, Choong-Yeun; Ismail, Wan Rosmanira; Omar, Khairuddin

    2014-06-01

    Quadratic Assignment Problem (QAP), like Vehicle Routing Problem, is one of those optimization problems that interests many researchers in the last decades. The Quay Management Problem is a specific problem which could be presented as a QAP which involves a double assignment of customers and products toward loading positions using lifting trucks. This study focuses on the routing problem while delivering the customers' demands. In this problem, lifting trucks will route around the storage sections to collect the products then deliver to the customers who are assigned to specific loading positions. The objective of minimizing the residence time for each customer is sought. This paper presents the problem and the proposed model.

  14. Energy Week presentations

    SciTech Connect

    2006-07-01

    Topics covered include: energy security; clean energy and low carbon; energy for growth and poverty reduction in Africa; financing of energy efficiency; SMEs for decentralised energy service provision; potential for biofuels in developing countries; clean energy and sustainable development; clean energy finance and private equity funds; power generation and low carbon technologies; beyond traditional finance; rehabilitation and emission control in thermal power plants; and carbon finance. The presentations are mainly in ppt (Power Point) or pdf (Acrobat) format. Some videos of the conference are also available on the website.

  15. LSRA with Shuttle main gear

    NASA Technical Reports Server (NTRS)

    1993-01-01

    A space shuttle landing gear system is visible between the two main landing gear components on this NASA CV-990, modified as a Landing Systems Research Aircraft (LSRA). The space shuttle landing gear test unit, operated by a high-pressure hydraulic system, allowed engineers to assess and document the performance of space shuttle main and nose landing gear systems, tires and wheel assemblies, plus braking and nose wheel steering performance. The series of 155 test missions for the space shuttle program, conducted at NASA's Dryden Flight Research Center, Edwards, California, provided extensive data about the life and endurance of the shuttle tire systems and helped raise the shuttle crosswind landing limits at Kennedy.

  16. Heavy hydrocarbon main injector technology

    NASA Technical Reports Server (NTRS)

    Fisher, S. C.; Arbit, H. A.

    1988-01-01

    One of the key components of the Advanced Launch System (ALS) is a large liquid rocket, booster engine. To keep the overall vehicle size and cost down, this engine will probably use liquid oxygen (LOX) and a heavy hydrocarbon, such as RP-1, as propellants and operate at relatively high chamber pressures to increase overall performance. A technology program (Heavy Hydrocarbon Main Injector Technology) is being studied. The main objective of this effort is to develop a logic plan and supporting experimental data base to reduce the risk of developing a large scale (approximately 750,000 lb thrust), high performance main injector system. The overall approach and program plan, from initial analyses to large scale, two dimensional combustor design and test, and the current status of the program are discussed. Progress includes performance and stability analyses, cold flow tests of injector model, design and fabrication of subscale injectors and calorimeter combustors for performance, heat transfer, and dynamic stability tests, and preparation of hot fire test plans. Related, current, high pressure, LOX/RP-1 injector technology efforts are also briefly discussed.

  17. On the main flow pattern in hydrocyclones

    SciTech Connect

    Hwang, C.C.; Shen, H.Q.; Zhu, G.; Khonsari, M.M. . Dept. of Mechanical Engineering)

    1993-03-01

    A theoretical model is developed for the prediction of the main flow pattern in hydrocyclones. The model regards the main body of the cyclone as inviscid and includes provisions for the fluid underflow in cyclones. The governing equations are solved analytically in closed form. To verify the results, a laboratory-scale conically-shaped hydrocyclone was designed, built, and tested. Experimental measurements for axial and tangential velocities are presented with a series of test solely devoted to the effect of underflow. The theoretical and experimental results are shown to be in good agreement. It is concluded that such an inviscid model gives an adequate representation of the main flow field in a cyclone.

  18. Tune control in the Fermilab Main Injector

    SciTech Connect

    G. Wu et al.

    1999-04-16

    We describe methods used to measure and control tunes in the Fermilab Main Injector (FMI). Emphasis is given to software implementation of the operator interface, to the front-end embedded computer system, and handling of hysteresis of main dipole and quadrupole magnets. Techniques are developed to permit control of tune of the Main Injector through several acceleration cycles: from 8.9 GeV/c to 120 GeV/c, from 8.9 GeV/c to 150 GeV/c, and from 150 GeV/c to 8.9 GeV/c. Systems which automate the complex interactions between tune measurement and the variety of ramping options are described. Some results of tune measurements and their comparison with the design model are presented.

  19. Acute left main coronary artery thrombosis due to cocaine use.

    PubMed

    Apostolakis, Efstratios; Tsigkas, Grigorios; Baikoussis, Nikolaos G; Koniari, Ioanna; Alexopoulos, Dimitrios

    2010-08-19

    It is common knowledge that cocaine has been linked to the development of various acute and chronic cardiovascular complications including acute coronary syndromes. We present a young, male patient, drug abuser who underwent CABG due to anterolateral myocardial infarction. Our presentation is one of the very rare cases reported in literature regarding acute thrombosis of left main coronary artery related to cocaine use, in a patient with normal coronary arteries, successfully operated. Drug-abusers seem to have increased mortality and morbidity after surgery and high possibility for stent thrombosis after percutaneous coronary interventions, because of their usually terrible medical compliance and coexistent several problems of general health. There are no specific guidelines about treatment of thrombus formation in coronary arteries, as a consequence of cocaine use. So, any decision making concerning the final treatment of these patient is a unique and individualized approach. We strongly recommend that all these patients should be treated surgically, especially patients with thrombus into the left main artery.

  20. YNPS main coolant system decontamination

    SciTech Connect

    Metcalf, E.T.

    1996-12-31

    The Yankee Nuclear Power Station (YNPS) located in Rowe, Massachusetts, is a four-loop pressurized water reactor that permanently ceased power operation on February 26, 1992. Decommissioning activities, including steam generator removal, reactor internals removal, and system dismantlement, have been in progress since the shutdown. One of the most significant challenges for YNPS in 1996 was the performance of the main coolant system chemical decontamination. This paper describes the objectives, challenges, and achievements involved in the planning and implementation of the chemical decontamination.

  1. Fermilab Main Injector Beam Position Monitor Upgrade

    NASA Astrophysics Data System (ADS)

    Banerjee, B.; Barker, W.; Bledsoe, S.; Boes, T.; Briegel, C.; Capista, D.; Deuerling, G.; Dysert, R.; Forster, R.; Foulkes, S.; Haynes, W.; Hendricks, B.; Kasza, T.; Kutschke, R.; Marchionni, A.; Olson, M.; Pavlicek, V.; Piccoli, L.; Prieto, P.; Rapisarda, S.; Saewert, A.; Van Bogaert, J.; Votava, M.; Webber, R.; Wendt, M.; Wilcer, N.; Wolbers, S.

    2006-11-01

    An upgrade of the Beam Position Monitor (BPM) signal processing and data acquisition system for the Fermilab Main Injector is described. The Main Injector is a fast cycling synchrotron that accelerates protons or antiprotons from 8 to 150 GeV, Each Main Injector cycle can have a totally different magnet ramp, RF frequency configuration, beam bunch structure, and injection/extraction pattern from the previous cycle. The new BPM system provides the capabilities and flexibility required by the dynamic and complex machine operations. The system offers measurement capability in the 2.5 MHz and 53 MHz channels to detect the range of bunch structures for protons and antiprotons in both wideband (turn-by-turn) and narrowband (closed-orbit) modes. The new BPM read-out system is based on the digital receiver concept and is highly configurable, allowing the signal processing of nearly all Main Injector beam conditions, including the detection of individual batches. An overview of the BPM system in the Main Injector operating environment, some technology details and first beam measurements are presented.

  2. Childbirth Problems

    MedlinePlus

    While childbirth usually goes well, complications can happen. They can cause a risk to the mother, baby, or both. Possible complications include Preterm (premature) labor, when labor starts before 37 completed weeks of pregnancy Problems with the umbilical cord Problems with ...

  3. Speech Problems

    MedlinePlus

    ... and the respiratory system . The ability to understand language and produce speech is coordinated by the brain. So a person with brain damage from an accident, stroke, or birth defect may have speech and language problems. Some people with speech problems, particularly articulation ...

  4. Popular Problems

    ERIC Educational Resources Information Center

    Skovhus, Randi Boelskifte; Thomsen, Rie

    2017-01-01

    This article introduces a method to critical reviews and explores the ways in which problems have been formulated in knowledge production on career guidance in Denmark over a 10-year period from 2004 to 2014. The method draws upon the work of Bacchi focussing on the "What's the problem represented to be" (WPR) approach. Forty-nine…

  5. Parking Problem

    ERIC Educational Resources Information Center

    Foster, Colin

    2012-01-01

    This is the story of a real problem, not a problem that is contrived, or invented for the convenience of the appropriate planning tool. This activity by a group of students, defined simply as "8FN", might be likened to an "end of term concert". If you just happened to be a delegate at the ATM Conference 2003 you might remember…

  6. [Nanotechnology in food production: advances and problems].

    PubMed

    Vernikov, V M; Arianova, E A; Gmoshinskiĭ, I V; Khotimchenko, S A; Tutel'ian, V A

    2009-01-01

    Presented article is a review of the modern data on nanotechnology use in food manufacturing. There are discussed the basic scopes of nanotechnology application in food industry. One of the main problems arising in connection with introduction of nanotechnology in food, is an absence of reliable methods of identification and the control of nanoparticles is in structure of foodstuff including the control of their authenticity. Other problem is connected to necessity of an estimation of the risks connected to presence of potentially toxic nanoparticles in food. The analysis of foreign experience of researches in the given area allows to formulate methodological approaches to formation of domestic system of nanosafety.

  7. Justification of the choice of units for mains-noah soil cultivation of sweet sorghum and their effectiveness

    NASA Astrophysics Data System (ADS)

    Kashapov, N. F.; Nafikov, M. M.; Gazetdinov, M. X.; Nafikova, M. M.; Nigmatzyanov, A. R.

    2016-06-01

    The article is devoted to problems of improving the efficiency of tillage crops. Presents an approach that focuses on the application of resource-saving technologies. To investigate the relationship between the financial welfare of the management and selection of units for primary processing of the soil. Conducted economic evaluation and identified the energy efficiency of main processing of the soil under sweet sorghum.

  8. A centralized audio presentation manager

    SciTech Connect

    Papp, A.L. III; Blattner, M.M.

    1994-05-16

    The centralized audio presentation manager addresses the problems which occur when multiple programs running simultaneously attempt to use the audio output of a computer system. Time dependence of sound means that certain auditory messages must be scheduled simultaneously, which can lead to perceptual problems due to psychoacoustic phenomena. Furthermore, the combination of speech and nonspeech audio is examined; each presents its own problems of perceptibility in an acoustic environment composed of multiple auditory streams. The centralized audio presentation manager receives abstract parameterized message requests from the currently running programs, and attempts to create and present a sonic representation in the most perceptible manner through the use of a theoretically and empirically designed rule set.

  9. Investigation of Tidal Power, Cobscook Bay, Maine.

    DTIC Science & Technology

    1980-08-01

    algae are common along the shore and in the intertidal and subtidal areas of the bay. Brown algae are dominant in the rocky intertidal and subtidal plant...loss of mixing within the wate, column would affect the existing organisms. Nine species of marine mammals are common to the Gulf of Maine and the...to the present shore line. After the glacier had melted back somc distance from the coast, silt and clay were laid down over the previous sediments in

  10. The geomagnetic main field and the geodynamo

    NASA Technical Reports Server (NTRS)

    Bloxham, Jeremy; Roberts, Paul H.

    1991-01-01

    Information available on the geomagnetic main field and the geodynamo is presented. Attention is given to the process of mapping the magnetic field, the last version of International Geomagnetic Reference Field Model, and maps of the magnetic field at the core-mantle boundary and their interpretation. Particular consideration is given to the existing geodynamo theories, with special relation given to the Braginsky and Meytlis theory of core turbulence in which the turbulence differs fundamentally from classical turbulence of Kolmogorov type.

  11. Problems in baryon spectroscopy

    SciTech Connect

    Capstick, S.

    1994-04-01

    Current issues and problems in the physics of ground- and excited-state baryons are considered, and are classified into those which should be resolved by CEBAF in its present form, and those which may require CEBAF to undergo an energy upgrade to 8 GeV or more. Recent theoretical developments designed to address these problems are outlined.

  12. Teaching through Problem Solving

    ERIC Educational Resources Information Center

    Fi, Cos D.; Degner, Katherine M.

    2012-01-01

    Teaching through Problem Solving (TtPS) is an effective way to teach mathematics "for" understanding. It also provides students with a way to learn mathematics "with" understanding. In this article, the authors present a definition of what it means to teach through problem solving. They also describe a professional development vignette that…

  13. California's Water Problems.

    ERIC Educational Resources Information Center

    Wheatley, Judy; Sudman, Rita Schmidt, Ed.

    This packet of instructional materials is designed to give social science students in grades 6-9 a first-hand experience in working out solutions to real-life problems involving the management of California's water. Students work in groups on one of three problems presented in the packet: (1) the management of the Sacramento-San Joaquin Delta that…

  14. GREECE--SELECTED PROBLEMS.

    ERIC Educational Resources Information Center

    MARTONFFY, ANDREA PONTECORVO; AND OTHERS

    A CURRICULUM GUIDE IS PRESENTED FOR A 10-WEEK STUDY OF ANCIENT GREEK CIVILIZATION AT THE 10TH-GRADE LEVEL. TEACHING MATERIALS FOR THE UNIT INCLUDE (1) PRIMARY AND SECONDARY SOURCES DEALING WITH THE PERIOD FROM THE BRONZE AGE THROUGH THE HELLENISTIC PERIOD, (2) GEOGRAPHY PROBLEMS, AND (3) CULTURAL MODEL PROBLEM EXERCISES. THOSE CONCEPTS WITH WHICH…

  15. The Main Aeromonas Pathogenic Factors

    PubMed Central

    Tomás, J. M.

    2012-01-01

    The members of the Aeromonas genus are ubiquitous, water-borne bacteria. They have been isolated from marine waters, rivers, lakes, swamps, sediments, chlorine water, water distribution systems, drinking water and residual waters; different types of food, such as meat, fish, seafood, vegetables, and processed foods. Aeromonas strains are predominantly pathogenic to poikilothermic animals, and the mesophilic strains are emerging as important pathogens in humans, causing a variety of extraintestinal and systemic infections as well as gastrointestinal infections. The most commonly described disease caused by Aeromonas is the gastroenteritis; however, no adequate animal model is available to reproduce this illness caused by Aeromonas. The main pathogenic factors associated with Aeromonas are: surface polysaccharides (capsule, lipopolysaccharide, and glucan), S-layers, iron-binding systems, exotoxins and extracellular enzymes, secretion systems, fimbriae and other nonfilamentous adhesins, motility and flagella. PMID:23724321

  16. Prematurity: present and future

    PubMed Central

    Tsimis, M. E.; Al-Hamayel, N. Abu; Germaine, H.; Burd, I.

    2014-01-01

    The study of preterm labor and prematurity, as with any medical science, has undergone a major transformation in its approach from an inevitable part of obstetrics with few answers to one in which science has led to knowledge and clinical intervention. Despite these advancements, understanding of preterm labor and prevention of prematurity is still limited. In the current review, we begin the discussion with fetal viability, first from a historical perspective and then from the understanding of this issue from a prospective of various professional organizations. We then present the scope of the problem of preterm birth from various countries including the discrepancy between the US and Europe. We continue with updates on extreme prematurity and outcomes with two longitudinal studies from the past 2 years. We further review available interventions for prematurity and discuss the use of antenatal corticosteroids. First, we examine their use in the context of professional recommendations and then examine the trajectory of their continued use in the late preterm period. We focus on a European-based trial with preliminary results and an ongoing American counterpart. The current knowledge of molecular mechanisms behind preterm labor is presented with a focus on the multiple etiologies of preterm labor, both known and presumed, with updates in the basic science realm. Furthermore, up-to-date studies on prediction of preterm birth and prematurity-related morbidity are presented. PMID:25300768

  17. Present status of aircraft instruments

    NASA Technical Reports Server (NTRS)

    1932-01-01

    This report gives a brief description of the present state of development and of the performance characteristics of instruments included in the following group: speed instruments, altitude instruments, navigation instruments, power-plant instruments, oxygen instruments, instruments for aerial photography, fog-flying instruments, general problems, summary of instrument and research problems. The items considered under performance include sensitivity, scale errors, effects of temperature and pressure, effects of acceleration and vibration, time lag, damping, leaks, elastic defects, and friction.

  18. CMS: Present status, limitations, and upgrade plans

    SciTech Connect

    Cheung, H.W.K.; /Fermilab

    2011-09-01

    An overview of the CMS upgrade plans will be presented. A brief status of the CMS detector will be given, covering some of the issues we have so far experienced. This will be followed by an overview of the various CMS upgrades planned, covering the main motivations for them, and the various R&D efforts for the possibilities under study. The CMS detector has been working extremely well since the start of data-taking at the LHC as is evidenced by the numerous excellent results published by CMS and presented at this workshop and recent conferences. Less well documented are the various issues that have been encountered with the detector. In the spirit of this workshop I will cover some of these issues with particular emphasis on problems that motivate some of the upgrades to the CMS detector for this decade of data-taking. Though the CMS detector has been working extremely well and expectations are great for making the most of the LHC luminosity, there have been a number of issues encountered so far. Some of these have been described and while none currently presents a problem for physics performance, some of them are expected to become more problematic, especially at the highest Phase 1 luminosities for which the majority of the integrated luminosity will be collected. These motivate upgrades for various parts of the CMS detector so that the current excellent physics performance can be maintained or even surpassed in the realm of the highest Phase 1 luminosities.

  19. Sleep Problems

    MedlinePlus

    ... For Consumers Consumer Information by Audience For Women Sleep Problems Share Tweet Linkedin Pin it More sharing ... PDF 474KB) En Español Medicines to Help You Sleep Tips for Better Sleep Basic Facts about Sleep ...

  20. Thyroid Problems

    MedlinePlus

    ... treated differently. Common thyroid disorders and problems include: Hypothyroidism Hypothyroidism is a disorder in which your thyroid doesn’ ... normal after you get better. If you have hypothyroidism, however, the levels of T4 in your blood ...

  1. Breathing Problems

    MedlinePlus

    ... getting enough air. Sometimes you can have mild breathing problems because of a stuffy nose or intense ... panic attacks Allergies If you often have trouble breathing, it is important to find out the cause.

  2. Kidney Problems

    MedlinePlus

    ... our e-newsletter! Aging & Health A to Z Kidney Problems Basic Facts & Information The kidneys are two ... the production of red blood cells. What are Kidney Diseases? For about one-third of older people, ...

  3. Sexual Problems

    MedlinePlus

    ... for a healthy life Mental health for men Sexual health for men Male infertility Prostate health Sexual problems ... updates. Enter email address Submit Home > Men's Health > Sexual health for men Men's Health This information in Spanish ( ...

  4. Nipple problems

    MedlinePlus

    ... nipple; Nipple problems Images Female breast Intraductal papilloma Mammary gland Abnormal discharge from the nipple Normal female breast ... PA: Elsevier Saunders; 2011:chap 8. Read More Breast cancer Endocrine glands Intraductal papilloma Review Date 11/16/2014 Updated ...

  5. Speech Problems

    MedlinePlus

    ... thinking, but it becomes disorganized as they're speaking. So, someone who clutters may speak in bursts ... refuse to wait patiently for them to finish speaking. If you have a speech problem, it's fine ...

  6. Tactical missile turbulence problems

    NASA Technical Reports Server (NTRS)

    Dickson, Richard E.

    1987-01-01

    Of particular interest is atmospheric turbulence in the atmospheric boundary layer, since this affects both the launch and terminal phase of flight, and the total flight for direct fire systems. Brief discussions are presented on rocket artillery boost wind problems, mean wind correction, turbulent boost wind correction, the Dynamically Aimed Free Flight Rocket (DAFFR) wind filter, the DAFFR test, and rocket wake turbulence problems. It is concluded that many of the turbulence problems of rockets and missiles are common to those of aircraft, such as structural loading and control system design. However, these problems have not been solved at this time.

  7. Problem Order Implications for Learning

    ERIC Educational Resources Information Center

    Li, Nan; Cohen, William W.; Koedinger, Kenneth R.

    2013-01-01

    The order of problems presented to students is an important variable that affects learning effectiveness. Previous studies have shown that solving problems in a blocked order, in which all problems of one type are completed before the student is switched to the next problem type, results in less effective performance than does solving the problems…

  8. The Problem of Heroin

    ERIC Educational Resources Information Center

    Wilson, James Q.; And Others

    1972-01-01

    Argues that most of the underlying assumptions of presently recommended solutions to the problem of heroin addiction are unreasonable, unwarranted, or at least open to more than one interpretation. (DM)

  9. The cosmological constant problem

    SciTech Connect

    Dolgov, A.D.

    1989-05-01

    A review of the cosmological term problem is presented. Baby universe model and the compensating field model are discussed. The importance of more accurate data on the Hubble constant and the Universe age is stressed. 18 refs.

  10. Word Problems Made Painless.

    ERIC Educational Resources Information Center

    Noddings, Nel

    1980-01-01

    Computer assisted instruction is presented as a tool for helping students learn to successfully solve word problems. Four stages of developing a curriculum for elementary school mathematics, grades three through six, are covered. (MP)

  11. The Problems of WARC.

    ERIC Educational Resources Information Center

    Pool, Ithiel de Sola

    1979-01-01

    Presents several anticipated problems to be handled at the 1979 World Administrative Conference including an orbital allocation plan, political and ideological issues concerning sovereignty and prior consent, spectrum assignments, and sharing of TV frequencies with land mobile radio. (JMF)

  12. Linear Programming and Its Application to Pattern Recognition Problems

    NASA Technical Reports Server (NTRS)

    Omalley, M. J.

    1973-01-01

    Linear programming and linear programming like techniques as applied to pattern recognition problems are discussed. Three relatively recent research articles on such applications are summarized. The main results of each paper are described, indicating the theoretical tools needed to obtain them. A synopsis of the author's comments is presented with regard to the applicability or non-applicability of his methods to particular problems, including computational results wherever given.

  13. [Health problems in the population of a dispensary in Cienfuegas].

    PubMed

    Mederos Collazo, C; Salabarría Díaz, N; Ramírez Martínez, R

    1995-01-01

    A study was performed on the entire population served by the medical office #36 from the teaching area V of Cienfuegos municipality with the aim of determining the main health problems and the effectiveness of measures designed to eliminate or improve such problems. Among the principal results are: the incorporation of elderly subjects to "Grandparents Clubs", the reduction of smoking and an improvement of sanitary education, although certain difficulties are still present regarding the latter due to increased intestinal parasitic infections.

  14. Active Immunization—Some Present-Day Problems

    PubMed Central

    1941-01-01

    Diphtheria.—Immunization is safe and effective. Compulsory measures are indicated, especially for the younger age-groups. The Schick test may be reserved for selected groups and to control modified methods. Proper spacing of doses of prophylactics and periodic reinoculation will ensure a high level of immunity. It is important to beware of “one-shot” methods. Indiscriminate swabbing is to be discouraged; high carrier rates are an indication for widespread diphtheria prophylaxis. Enteric fever.—Mass immunization is desirable in many areas, although there is no justification for compulsion except for people exposed to special risks. In deciding upon dosage of vaccine, more attention should be paid to physical state and body-weight. After the primary course, very small periodic doses (for example o.i.c.c) are worthy of trial. Vaccine can be given during an epidemic without increasing the chances of infection. Tetanus.—Two doses of toxoid spaced by six weeks give useful immunity. Women give significantly higher titres than men. A third dose of i.o.c.c. after a long interval—seven to nine months—often produces a dramatic rise in circulating antitoxin, and counteracts any tendency to waning immunity. Smallpox.—As vaccination has not been made compulsory in this country, infection by virulent strains from the continent may tax the resources of the public health services. Whooping-cough.—The large number of injections of vaccine usually recommended is a deterrent to mass immunization. Research into the possibility of fewer doses and wider spacing is indicated. Other diseases are considered briefly. Combined immunization.—It may be useful to combine diphtheria T.A.F. and tetanus toxoid, also tetanus toxoid and T.A.B. vaccine. T.A.F. plus T.A.B. is probably contra-indicated for adults on account of severe reactions. Diphtheria A.P.T. should not be mixed with tetanus toxoid as it may go into solution and become ineffective. Sterilization of syringes and needles.—An intensive inoculation campaign is no excuse for slip-shod methods. PMID:19992328

  15. Present status of biochemical research on the insecticide resistance problem*

    PubMed Central

    Agosin, Moises

    1963-01-01

    In order to provide a rational basis for the development of new insecticides, a thorough understanding of resistance mechanisms is necessary and this presupposes a detailed knowledge of the normal biochemical pathways in insects. The author reviews recent progress in this field, particularly the work on enzymatic detoxication of insecticides which appears to be the most important single factor in the production of resistance. The mechanisms include dehydrochlorination and α-methylenic oxidation (DDT), hydrolysis by phosphatases or carboxyesterases (organophosphorus compounds), and oxidation by microsomal enzyme systems (various classes of insecticides). Much work still needs to be done on the enzyme systems involved, especially in relation to substrate specificity and the effect of enzyme inhibitors that might act as synergists of insecticides. PMID:20604178

  16. Present Development and Current Problems about Composite in Our Country

    DTIC Science & Technology

    1989-12-20

    4 papers discuss about fibre - reinforced concrete. Indian authors recommend reinforcing concrete by natural plant fibre . One paper from them suggests...and << Acta Compound Matarial >>, published book << Mechanics of Short Fibre Composite >> and related papers in the amount of more than 40. Abstract...temperature material, cost of composite in civil use, fibre , development of polymer basegroup, interface study, processing technique, damageless flaw

  17. Accelerating Computation of the Unit Commitment Problem (Presentation)

    SciTech Connect

    Hummon, M.; Barrows, C.; Jones, W.

    2013-10-01

    Production cost models (PCMs) simulate power system operation at hourly (or higher) resolution. While computation times often extend into multiple days, the sequential nature of PCM's makes parallelism difficult. We exploit the persistence of unit commitment decisions to select partition boundaries for simulation horizon decomposition and parallel computation. Partitioned simulations are benchmarked against sequential solutions for optimality and computation time.

  18. Rehabilitation Technologies for Water Mains

    EPA Science Inventory

    This paper presents on-going research work for the USEPA Research Project on “Rehabilitation of Water and Wastewater Systems.” It will compare various renewal methods (i.e. replacement, rehabilitation and repair technologies that are available in the market). The paper discusse...

  19. Main memory unit. [hybrid computers

    NASA Technical Reports Server (NTRS)

    1975-01-01

    The development of a main memory unit (MMU) for the space ultrareliable module computer (SUMC) model HTC is discussed. The design, fabrication, and test of basic memory modules (BMM) which were to be used in the design and construction of the MMU are described. The BMM was designed from state-of-the-art technologies which included large scale integration devices mounted and interconnected on a substrate to form a functional module to be utilized in the MMU development. A SUMC memory system design study is discussed which addressed itself to the BMM design and analysis to be conducted to determine the most efficient organization of the BMM in order to establish such modularity features as: word length expandability without redesign, high reliability, and fault tolerance. One MMU was designed, fabricated, tested, and delivered which will be electrical and mechanically compatible with the hybrid technology computer (HTC) model of the SUMC family of computers. The MMU will contain a storage capacity of 8196 36 bit words which includes a parity bit for each 8 bit byte of data.

  20. Matrix interdiction problem

    SciTech Connect

    Pan, Feng; Kasiviswanathan, Shiva

    2010-01-01

    In the matrix interdiction problem, a real-valued matrix and an integer k is given. The objective is to remove k columns such that the sum over all rows of the maximum entry in each row is minimized. This combinatorial problem is closely related to bipartite network interdiction problem which can be applied to prioritize the border checkpoints in order to minimize the probability that an adversary can successfully cross the border. After introducing the matrix interdiction problem, we will prove the problem is NP-hard, and even NP-hard to approximate with an additive n{gamma} factor for a fixed constant {gamma}. We also present an algorithm for this problem that achieves a factor of (n-k) mUltiplicative approximation ratio.

  1. Forensic entomology and main challenges in Brazil.

    PubMed

    Gomes, Leonardo; Von Zuben, Cláudio J

    2006-01-01

    Apart from an early case report from China (13th century), the first observations on insects and other arthropods as forensic indicators were documented in Germany and France during mass exhumations in the 1880s by Reinhard, who is considered a co-founder of the discipline. After the French publication of Mégnin's popular book on the applied aspects of forensic entomology, the concept quickly spread to Canada and United States. At that time, researchers recognized that the lack of systematic observations of insects of forensic importance jeopardized their use as indicators of postmortem interval. General advances in insect taxonomy and ecology helped to fill this gap over the following decades. After World Wars, few forensic entomology cases were reported in the scientific literature. From 1960s to the 1980s, Leclercq and Nuorteva were primarily responsible for maintaining the method in Central Europe, reporting isolated cases. Since then, basic research in the USA, Russia and Canada opened the way to the routine use of Entomology in forensic investigations. Identifications of insects associated with human cadavers are relatively few in the literature of the Neotropical region and have received little attention in Brazil. This article brings an overview of historic developments in this field, the recent studies and the main problems and challenges in South America and mainly in Brazil.

  2. Main field and recent secular variation.

    USGS Publications Warehouse

    Alldredge, L.R.

    1983-01-01

    As Cain (1979) indicated might happen in the last IUGG quadrennial report, added resources were made available during the past few years and a real impulse was added to the geomagnetic work in the US by the launching of the MAGSAT Satellite. This new effort paid off in terms of new charts, additional long wavelength studies, and external source studies. As before, however, the future funding for new starts in geomagnetism does not look bright at the present time. A single MAGSAT in orbit a little more than seven months did wonders for main field (M.F.) charting, but did little or nothing for secular variation (S.V.) charting. It would take a number of repeated MAGSATS to help the S.V. picture. Meanwhile, the world magnetic observatory net and surface repeat stations remain as the main source of S.V. data. -from Author

  3. [Therapeutic problems in disorders of sex development].

    PubMed

    Bajszczak, Katarzyna; Słowikowska-Hilczer, Jolanta

    2016-01-01

    The compatibility between genetic, gonadal, genital, somatic and psychic sex should be present for the proper sexual development. If there is no such compatibility, disorders of sex development (DSD) appear. Medical procedure in such cases leads to many problems which mainly come from the lack of sufficient knowledge about the pathophysiology of the disorders. The main difficulties met by diagnostic and therapeutic team are: determination of the official sex, prediction of gender identity, hormonal activity of gonads and fertility, as well as the decision to undertake surgical procedures involving the genitals and gonads. Disorders of sex development lead also to psychological problems of patients and their families, because they disturb the proper social functioning.

  4. Formal language constrained path problems

    SciTech Connect

    Barrett, C.; Jacob, R.; Marathe, M.

    1997-07-08

    In many path finding problems arising in practice, certain patterns of edge/vertex labels in the labeled graph being traversed are allowed/preferred, while others are disallowed. Motivated by such applications as intermodal transportation planning, the authors investigate the complexity of finding feasible paths in a labeled network, where the mode choice for each traveler is specified by a formal language. The main contributions of this paper include the following: (1) the authors show that the problem of finding a shortest path between a source and destination for a traveler whose mode choice is specified as a context free language is solvable efficiently in polynomial time, when the mode choice is specified as a regular language they provide algorithms with improved space and time bounds; (2) in contrast, they show that the problem of finding simple paths between a source and a given destination is NP-hard, even when restricted to very simple regular expressions and/or very simple graphs; (3) for the class of treewidth bounded graphs, they show that (i) the problem of finding a regular language constrained simple path between source and a destination is solvable in polynomial time and (ii) the extension to finding context free language constrained simple paths is NP-complete. Several extensions of these results are presented in the context of finding shortest paths with additional constraints. These results significantly extend the results in [MW95]. As a corollary of the results, they obtain a polynomial time algorithm for the BEST k-SIMILAR PATH problem studied in [SJB97]. The previous best algorithm was given by [SJB97] and takes exponential time in the worst case.

  5. Problems in Choosing Tools and Methods for Teaching Programming

    ERIC Educational Resources Information Center

    Vitkute-Adžgauskiene, Davia; Vidžiunas, Antanas

    2012-01-01

    The paper analyses the problems in selecting and integrating tools for delivering basic programming knowledge at the university level. Discussion and analysis of teaching the programming disciplines, the main principles of study programme design, requirements for teaching tools, methods and corresponding languages is presented, based on literature…

  6. Parent Drug Education Programs: Reasons, Problems, and Implications.

    ERIC Educational Resources Information Center

    Fox, Tricia A.

    1991-01-01

    Presents an overview of parent drug education programs together with information regarding those problems, concerns, and needs faced by parents who are dealing with an offspring drug user/abuser. Emphasizes the unique, individual characteristics of parents and suggests that these influences may be the main determinants of the effectiveness of…

  7. Extremal Optimization for Quadratic Unconstrained Binary Problems

    NASA Astrophysics Data System (ADS)

    Boettcher, S.

    We present an implementation of τ-EO for quadratic unconstrained binary optimization (QUBO) problems. To this end, we transform modify QUBO from its conventional Boolean presentation into a spin glass with a random external field on each site. These fields tend to be rather large compared to the typical coupling, presenting EO with a challenging two-scale problem, exploring smaller differences in couplings effectively while sufficiently aligning with those strong external fields. However, we also find a simple solution to that problem that indicates that those external fields apparently tilt the energy landscape to a such a degree such that global minima become more easy to find than those of spin glasses without (or very small) fields. We explore the impact of the weight distribution of the QUBO formulation in the operations research literature and analyze their meaning in a spin-glass language. This is significant because QUBO problems are considered among the main contenders for NP-hard problems that could be solved efficiently on a quantum computer such as D-Wave.

  8. Using a Model to Describe Students' Inductive Reasoning in Problem Solving

    ERIC Educational Resources Information Center

    Canadas, Maria C.; Castro, Encarnacion; Castro, Enrique

    2009-01-01

    Introduction: We present some aspects of a wider investigation (Canadas, 2007), whose main objective is to describe and characterize inductive reasoning used by Spanish students in years 9 and 10 when they work on problems that involved linear and quadratic sequences. Method: We produced a test composed of six problems with different…

  9. The Neuroscience of Callous-Unemotional Subtype of Conduct Problems: Implications for Intervention and Education

    ERIC Educational Resources Information Center

    Jones, Alice P.; Viding, Essi

    2010-01-01

    This paper presents a novel school-based intervention programme for children with chronic and severe emotional and behavioural difficulties. The main aim of the programme is to reduce conduct problems and to increase prosocial behaviours. The ultimate aim of such a programme is to help pupils with severe and chronic conduct problems back on track…

  10. Saco Bay, Maine: Sediment Budget for Late Twentieth Century to Present

    DTIC Science & Technology

    2016-02-01

    a greater percentage of feldspar and rock fragments, indicating an upriver source (Manthrop 1995). Polishing and pitting of turbine blades at the dam...future cycle of 10 yr for placements, P = 8,200 yd3/yr. The cell is unbalanced, with residual of 6,200 yd3/yr. Sediment Budget Cell Scar01. The

  11. Enlisted Supply: Past, Present, and Future. Volume 1. Executive Summary & Main Text

    DTIC Science & Technology

    1982-09-01

    and recruiting resources . Specifically, the tasks were to reconcile disparities in previous studies of recruiter and advertising productivity ; and...benefits, recruiters, advertising , unemployment, population and Department of Labor programs . The essence of these effects and their impact on Navy...economic and policy factors, as well as to the size of the youth population . The pay of civilian youth, military pay, re- cruiters, advertising , and

  12. Redesign of flight space shuttle main engine nozzle G-15 seal area based on the thermal analysis and flow models

    NASA Technical Reports Server (NTRS)

    Mcdonald, Gary H.

    1991-01-01

    The main objective is to understand the present sealing area response to environmental conditions of the supersonic turbulent combustion gases which has led to both stress rupture cracks and hot gas leakage. A review of the existing thermal analysis and flow modeling has been performed of the present design and seal alternatives have been suggested to possibly reduce or eliminate the hot gas flow recirculation problem and the associated seal cracking.

  13. Energy Problems and Environmental Concern

    ERIC Educational Resources Information Center

    Train, Russell E.

    1973-01-01

    Discusses problems encountered in energy extraction and consumption, involving nuclear power plant construction, environmental consequences of energy systems, and energy conservation ethics. Indicates that the increasing concern over environmental quality is not the true cause of present energy problems. (CC)

  14. The Problem of Defining Intelligence.

    ERIC Educational Resources Information Center

    Lubar, David

    1981-01-01

    The major philosophical issues surrounding the concept of intelligence are reviewed with respect to the problems surrounding the process of defining and developing artificial intelligence (AI) in computers. Various current definitions and problems with these definitions are presented. (MP)

  15. Decision Analysis for Environmental Problems

    EPA Science Inventory

    Environmental management problems are often complex and uncertain. A formal process with proper guidance is needed to understand the issues, identify sources of disagreement, and analyze the major uncertainties in environmental problems. This course will present a process that fo...

  16. Analysis of Feeder Bus Network Design and Scheduling Problems

    PubMed Central

    Almasi, Mohammad Hadi; Karim, Mohamed Rehan

    2014-01-01

    A growing concern for public transit is its inability to shift passenger's mode from private to public transport. In order to overcome this problem, a more developed feeder bus network and matched schedules will play important roles. The present paper aims to review some of the studies performed on Feeder Bus Network Design and Scheduling Problem (FNDSP) based on three distinctive parts of the FNDSP setup, namely, problem description, problem characteristics, and solution approaches. The problems consist of different subproblems including data preparation, feeder bus network design, route generation, and feeder bus scheduling. Subsequently, descriptive analysis and classification of previous works are presented to highlight the main characteristics and solution methods. Finally, some of the issues and trends for future research are identified. This paper is targeted at dealing with the FNDSP to exhibit strategic and tactical goals and also contributes to the unification of the field which might be a useful complement to the few existing reviews. PMID:24526890

  17. Heat Problems.

    ERIC Educational Resources Information Center

    Connors, G. Patrick

    Heat problems and heat cramps related to jogging can be caused by fluid imbalances, medications, dietary insufficiency, vomiting or diarrhea, among other factors. If the condition keeps reoccurring, the advice of a physician should be sought. Some preventive measures that can be taken include: (1) running during the cooler hours of the day; (2)…

  18. Puzzles & Problems.

    ERIC Educational Resources Information Center

    Murphy, Pat, Ed.

    1993-01-01

    "Exploring" is a magazine of science, art, and human perception, produced by Exploratorium in collaboration with other participating museums. This issue focuses on puzzles and problem solving. Brain teasers, puzzles, and the strategies for solving them are included. Features include: (1) "Homework Assignment #3" (Paul Doherty);…

  19. The Main Achievements of the Laa Project

    NASA Astrophysics Data System (ADS)

    Zichichi, A.

    The following sections are included: * INTRODUCTION * General philosophy of the LAA Project * The basic data * The Physics at the new generation of Hadron Colliders * Present structure of the LAA project * Participants * The Main achievements of the LAA Project * STATUS OF THE PROJECT * High Precision Tracking * Gaseous detectors * Scintillating fibres * Microstrip GaAs * CALORIMETRY * High precision electro-magnetic * Compact EM+Hadronic * "Perfect" Calorimetry * LARGE AREA DEVICES * Construction * Alignment * LEADING PARTICLE DETECTION * Radiation-hard technologies * DATA ACQUISITION AND ANALYSIS * SUPER COMPUTERS AND MONTE CARLO SIMULATIONS * CONCLUSIONS * References

  20. Additively Manufactured Main Fuel Valve Housing

    NASA Technical Reports Server (NTRS)

    Eddleman, David; Richard, Jim

    2015-01-01

    Selective Laser Melting (SLM) was utilized to fabricate a liquid hydrogen valve housing typical of those found in rocket engines and main propulsion systems. The SLM process allowed for a valve geometry that would be difficult, if not impossible to fabricate by traditional means. Several valve bodies were built by different SLM suppliers and assembled with valve internals. The assemblies were then tested with liquid nitrogen and operated as desired. One unit was also burst tested and sectioned for materials analysis. The design, test results, and planned testing are presented herein.

  1. Photogrammetric Analysis of CPAS Main Parachutes

    NASA Technical Reports Server (NTRS)

    Ray, Eric; Bretz, David

    2011-01-01

    The Crew Exploration Vehicle Parachute Assembly System (CPAS) is being designed to land the Orion Crew Module (CM) at a safe rate of descent at splashdown with a cluster of two to three Main parachutes. The instantaneous rate of descent varies based on parachute fly-out angles and geometric inlet area. Parachutes in a cluster oscillate between significant fly-out angles and colliding into each other. The former presents a sub-optimal inlet area and the latter lowers the effective drag area as the parachutes interfere with each other. The fly-out angles are also important in meeting a twist torque requirement. Understanding cluster behavior necessitates measuring the Mains with photogrammetric analysis. Imagery from upward looking cameras is analyzed to determine parachute geometry. Fly-out angles are measured from each parachute vent to an axis determined from geometry. Determining the scale of the objects requires knowledge of camera and lens calibration as well as features of known size. Several points along the skirt are tracked to compute an effective circumference, diameter, and inlet area as a function of time. The effects of this geometry are clearly seen in the system drag coefficient time history. Photogrammetric analysis is key in evaluating the effects of design features such as an Over-Inflation Control Line (OICL), Main Line Length Ratio (MLLR), and geometric porosity, which are varied in an attempt to minimize cluster oscillations. The effects of these designs are evaluated through statistical analysis.

  2. Main geophysical techniques used for non-destructive evaluation in cultural built heritage: a review

    NASA Astrophysics Data System (ADS)

    Martinho, E.; Dionísio, A.

    2014-10-01

    Geophysical methodologies have been implemented, tested and validated as diagnostic and /or monitoring tools in artworks or historical monuments. They are non-destructive and can give an image of internal structure of investigated medium. This paper is a review about the main geophysical techniques applied to the study of cultural built heritage (excluding the archaeology field). A brief description of the used methodologies is presented, the main investigations done in this field are showed, the method or methods most appropriate to answer each problem (moisture detection, characterization of the materials, study of the structural continuity of the material, assessment of intervention’s effectiveness) are indicated and the main advances and gaps and future developments are also pointed out.

  3. Formulating and Solving Problems in Computational Chemistry.

    ERIC Educational Resources Information Center

    Norris, A. C.

    1980-01-01

    Considered are the main elements of computational chemistry problems and how these elements can be used to formulate the problems mathematically. Techniques that are useful in devising an appropriate solution are also considered. (Author/TG)

  4. The Problem of Consciousness.

    ERIC Educational Resources Information Center

    Crick, Francis; Koch, Christof

    1992-01-01

    Discusses approaches to the problem presented in understanding consciousness as a yet undiscovered process of interacting neuron activity. Presents the historical context of research in the area of human awareness and identifies research necessary to scientifically explain how the brain relates to the mind. (MCO)

  5. Hierarchi problem

    NASA Astrophysics Data System (ADS)

    Rubin, Sergey G.

    2016-02-01

    The way to solve the hierarchy problem based on multidimensional gravity is discussed. Various metrics of deformed extra space are produced at the Planck scale. It is shown that the Higgs vacuum value depends on a metric of extra space and hence their different numerical values are realized in various universes. An interval of the Higgs vacuum values is proved include zero value. Our universe belongs to a set of universes the vacuum values of which are close to zero

  6. Making your presentation fun: creative presentation techniques

    SciTech Connect

    KEENEN,MARTHA JANE

    2000-05-18

    What possesses someone to volunteer and go through hoops and red tape to make a presentation at a conference? For that matter, why does anyone ever present anything to anyone? Actually, presentations are a fact of life and there are many reasons for doing a presentation and doing it well. New and existing staff need training and orientation to the way things are done here. Handing all of them a manual and hoping they read it is pretty much a waste of paper. On the other hand, an effective, entertaining and upbeat presentation on the relevant topics is more likely to stick with those people. They will even have a name and face to remember and seek out when they have an issue on or with that topic. This can be a very effective beginning for networking with new peers. The presenter is seen as knowledgeable, as a source of information on company topics and possibly evaluated as a potential mentor or future manager. Project staff and/or peers benefit from clear, concise, presentations of topical knowledge. This is one way that a group working on various aspects of the same project or program can stay in touch and in step with each other. Most importantly, presentations may be the best or only door into the minds (and budgets) of management and customers. These presentations are a wonderful opportunity to address legal and compliance issues, budget, staffing, and services. Here is a chance, maybe the only one, to demonstrate and explain the wonderfulness of a program and the benefit they get by using the services offered most effectively. An interactive presentation on legal and compliance issues can be an effective tool in helping customers and/or management make good risk management decisions.

  7. Space Shuttle Main Engine performance analysis

    NASA Astrophysics Data System (ADS)

    Santi, L. Michael

    1993-11-01

    For a number of years, NASA has relied primarily upon periodically updated versions of Rocketdyne's power balance model (PBM) to provide space shuttle main engine (SSME) steady-state performance prediction. A recent computational study indicated that PBM predictions do not satisfy fundamental energy conservation principles. More recently, SSME test results provided by the Technology Test Bed (TTB) program have indicated significant discrepancies between PBM flow and temperature predictions and TTB observations. Results of these investigations have diminished confidence in the predictions provided by PBM, and motivated the development of new computational tools for supporting SSME performance analysis. A multivariate least squares regression algorithm was developed and implemented during this effort in order to efficiently characterize TTB data. This procedure, called the 'gains model,' was used to approximate the variation of SSME performance parameters such as flow rate, pressure, temperature, speed, and assorted hardware characteristics in terms of six assumed independent influences. These six influences were engine power level, mixture ratio, fuel inlet pressure and temperature, and oxidizer inlet pressure and temperature. A BFGS optimization algorithm provided the base procedure for determining regression coefficients for both linear and full quadratic approximations of parameter variation. Statistical information relative to data deviation from regression derived relations was also computed. A new strategy for integrating test data with theoretical performance prediction was also investigated. The current integration procedure employed by PBM treats test data as pristine and adjusts hardware characteristics in a heuristic manner to achieve engine balance. Within PBM, this integration procedure is called 'data reduction.' By contrast, the new data integration procedure, termed 'reconciliation,' uses mathematical optimization techniques, and requires both

  8. Space Shuttle Main Engine performance analysis

    NASA Technical Reports Server (NTRS)

    Santi, L. Michael

    1993-01-01

    For a number of years, NASA has relied primarily upon periodically updated versions of Rocketdyne's power balance model (PBM) to provide space shuttle main engine (SSME) steady-state performance prediction. A recent computational study indicated that PBM predictions do not satisfy fundamental energy conservation principles. More recently, SSME test results provided by the Technology Test Bed (TTB) program have indicated significant discrepancies between PBM flow and temperature predictions and TTB observations. Results of these investigations have diminished confidence in the predictions provided by PBM, and motivated the development of new computational tools for supporting SSME performance analysis. A multivariate least squares regression algorithm was developed and implemented during this effort in order to efficiently characterize TTB data. This procedure, called the 'gains model,' was used to approximate the variation of SSME performance parameters such as flow rate, pressure, temperature, speed, and assorted hardware characteristics in terms of six assumed independent influences. These six influences were engine power level, mixture ratio, fuel inlet pressure and temperature, and oxidizer inlet pressure and temperature. A BFGS optimization algorithm provided the base procedure for determining regression coefficients for both linear and full quadratic approximations of parameter variation. Statistical information relative to data deviation from regression derived relations was also computed. A new strategy for integrating test data with theoretical performance prediction was also investigated. The current integration procedure employed by PBM treats test data as pristine and adjusts hardware characteristics in a heuristic manner to achieve engine balance. Within PBM, this integration procedure is called 'data reduction.' By contrast, the new data integration procedure, termed 'reconciliation,' uses mathematical optimization techniques, and requires both

  9. Astronauts' menu problem.

    NASA Technical Reports Server (NTRS)

    Lesso, W. G.; Kenyon, E.

    1972-01-01

    Consideration of the problems involved in choosing appropriate menus for astronauts carrying out SKYLAB missions lasting up to eight weeks. The problem of planning balanced menus on the basis of prepackaged food items within limitations on the intake of calories, protein, and certain elements is noted, as well as a number of other restrictions of both physical and arbitrary nature. The tailoring of a set of menus for each astronaut on the basis of subjective rankings of each food by the astronaut in terms of a 'measure of pleasure' is described, and a computer solution to this problem by means of a mixed integer programming code is presented.

  10. Student-Posed Problems

    NASA Astrophysics Data System (ADS)

    Harper, Kathleen A.; Etkina, Eugenia

    2002-10-01

    As part of weekly reports,1 structured journals in which students answer three standard questions each week, they respond to the prompt, If I were the instructor, what questions would I ask or problems assign to determine if my students understood the material? An initial analysis of the results shows that some student-generated problems indicate fundamental misunderstandings of basic physical concepts. A further investigation explores the relevance of the problems to the week's material, whether the problems are solvable, and the type of problems (conceptual or calculation-based) written. Also, possible links between various characteristics of the problems and conceptual achievement are being explored. The results of this study spark many more questions for further work. A summary of current findings will be presented, along with its relationship to previous work concerning problem posing.2 1Etkina, E. Weekly Reports;A Two-Way Feedback Tool, Science Education, 84, 594-605 (2000). 2Mestre, J.P., Probing Adults Conceptual Understanding and Transfer of Learning Via Problem Posing, Journal of Applied Developmental Psychology, 23, 9-50 (2002).

  11. Almost Optimal Interior Penalty Discontinuous Approximations of Symmetric Elliptic Problems on Non-Matching Grids

    SciTech Connect

    Lazarov, R D; Pasciak, J E; Schoberl, J; Vassilevski, P S

    2001-08-08

    We consider an interior penalty discontinuous approximation for symmetric elliptic problems of second order on non-matching grids in this paper. The main result is an almost optimal error estimate for the interior penalty approximation of the original problem based on the partition of the domain into a finite number of subdomains. Further, an error analysis for the finite element approximation of the penalty formulation is given. Finally, numerical experiments on a series of model second order problems are presented.

  12. Inspection of deteriorating asbestos cement force mains with georadar technique.

    PubMed

    Smolders, S; Verhoest, L; De Gueldre, G; Van De Steene, B

    2009-01-01

    Several breaks on asbestos cement force mains indicated a problem with these kind of force mains. An inspection technique that could give a good idea about the state of asbestos cement pipes was searched for. A georadar technique already existed to inspect drinking water mains and gravity sewers. The technique measures the wall thickness of cement containing materials and it can differentiate between 'healthy' and deteriorated material. The technique was applied on four wastewater force mains in Flanders. The results indicated a rapid deterioration of the asbestos cement. A deterioration mechanism called 'calcium leaching' was known from asbestos cement drinking water mains. Further it was known that H(2)S is produced in force mains and that it can attack concrete containing materials by mains of biogenic sulphuric acid attack. This research checked if both deterioration mechanisms cause the measured rapid deterioration of the asbestos cement force mains. Finally deterioration speeds and minimum required wall thickness were calculated. With the results the residual lifetimes of the force mains were calculated and these could be applied in an asset management program.

  13. Context in Mathematics Learning: Problems and Possibilities

    ERIC Educational Resources Information Center

    Lee, Ji-Eun

    2007-01-01

    This article presents an instructional idea that facilitates the students' active participation in the problem analysis process using insufficient or contradictory problem contexts. (Contains 1 figure.)

  14. Maine Students Learn to Appreciate Diversity.

    ERIC Educational Resources Information Center

    Flood, Pamela S.

    1994-01-01

    The Maine studies program at a rural Maine middle school begins in the sixth grade and expands through the eighth grade. Students camp out, explore Maine's geography, and learn about themselves, their state's history, and the state's diverse populations. Two multischool programs, Exchanging Maine's Cultures and the Curriculum Integration…

  15. TOPICAL REVIEW: Present status of the Penrose inequality

    NASA Astrophysics Data System (ADS)

    Mars, Marc

    2009-10-01

    The Penrose inequality gives a lower bound for the total mass of a spacetime in terms of the area of suitable surfaces that represent black holes. Its validity is supported by the cosmic censorship conjecture, and therefore its proof (or disproof) is an important problem in relation with gravitational collapse. The Penrose inequality is a very challenging problem in mathematical relativity and it has received continuous attention since its formulation by Penrose in the early seventies. Important breakthroughs have been made in the last decade or so, with the complete resolution of the so-called Riemannian Penrose inequality and a very interesting proposal to address the general case by Bray and Khuri. In this review, the most important results on this field will be discussed and the main ideas behind their proofs will be summarized, with the aim of presenting what is the status of our present knowledge in this topic.

  16. Regularizing the r-mode Problem for Nonbarotropic Relativistic Stars

    NASA Technical Reports Server (NTRS)

    Lockitch, Keith H.; Andersson, Nils; Watts, Anna L.

    2004-01-01

    We present results for r-modes of relativistic nonbarotropic stars. We show that the main differential equation, which is formally singular at lowest order in the slow-rotation expansion, can be regularized if one considers the initial value problem rather than the normal mode problem. However, a more physically motivated way to regularize the problem is to include higher order terms. This allows us to develop a practical approach for solving the problem and we provide results that support earlier conclusions obtained for uniform density stars. In particular, we show that there will exist a single r-mode for each permissible combination of 1 and m. We discuss these results and provide some caveats regarding their usefulness for estimates of gravitational-radiation reaction timescales. The close connection between the seemingly singular relativistic r-mode problem and issues arising because of the presence of co-rotation points in differentially rotating stars is also clarified.

  17. Preconditioned Mixed Spectral Element Methods for Elasticity and Stokes Problems

    NASA Technical Reports Server (NTRS)

    Pavarino, Luca F.

    1996-01-01

    Preconditioned iterative methods for the indefinite systems obtained by discretizing the linear elasticity and Stokes problems with mixed spectral elements in three dimensions are introduced and analyzed. The resulting stiffness matrices have the structure of saddle point problems with a penalty term, which is associated with the Poisson ratio for elasticity problems or with stabilization techniques for Stokes problems. The main results of this paper show that the convergence rate of the resulting algorithms is independent of the penalty parameter, the number of spectral elements Nu and mildly dependent on the spectral degree eta via the inf-sup constant. The preconditioners proposed for the whole indefinite system are block-diagonal and block-triangular. Numerical experiments presented in the final section show that these algorithms are a practical and efficient strategy for the iterative solution of the indefinite problems arising from mixed spectral element discretizations of elliptic systems.

  18. National Launch System Space Transportation Main Engine

    NASA Technical Reports Server (NTRS)

    Hoodless, Ralph M., Jr.; Monk, Jan C.; Cikanek, Harry A., III

    1991-01-01

    The present liquid-oxygen/liquid-hydrogen engine is described as meeting the specific requirements of the National Launch System (NLS) Program including cost-effectiveness and robustness. An overview of the NLS and its objectives is given which indicates that the program aims to develop a flexible launch system to meet security, civil, and commercial needs. The Space Transportation Main Engine (STME) provides core and boost propulsion for the 1.5-stage vehicle and core propulsion for the solid booster vehicle. The design incorporates step-throttling, order-of-magnitude reductions in welds, and configuration targets designed to optimize robustness. The STME is designed to provide adaptable and dependable propulsion while minimizing recurring costs and is designed to meet the needs of NLS and other typical space-transportation programs currently being planned.

  19. Main results of the PICARD mission

    NASA Astrophysics Data System (ADS)

    Meftah, M.; Corbard, T.; Hauchecorne, A.; Irbah, A.; Boumier, P.; Chevalier, A.; Schmutz, W.; Ikhlef, R.; Morand, F.; Renaud, C.; Hochedez, J.-F.; Cessateur, G.; Turck-Chièze, S.; Salabert, D.; Rouzé, M.; van Ruymbeke, M.; Zhu, P.; Kholikov, S.; Koller, S.; Conscience, C.; Dewitte, S.; Damé, L.; Djafer, D.

    2016-07-01

    PICARD is a mission devoted to solar variability observations through imagery and radiometric measurements. The main goal is to provide data for scientific investigation first in the area of solar physics, and second in the assessment of the influence of the solar variability on the Earth climate variability. PICARD contains a double program with in-space and on-ground measurements. The PICARD spacecraft was launched on June 15, 2010, commissioned in-flight in October of the same year and was retired in April 2014. The PICARD ground-based observatory is operational since May 2011. We shall give a short overview of the PICARD instrumentation. New estimates of the absolute values of the total solar irradiance, of the solar spectral irradiance at typical wavelengths, and of the solar oblateness will be given. We will also report about helioseismic studies. Finally, we will present our current results about solar radius variations after six years of solar observation.

  20. STAGS Example Problems Manual

    NASA Technical Reports Server (NTRS)

    Knight, Norman F., Jr.; Rankin, Charles C.

    2006-01-01

    This document summarizes the STructural Analysis of General Shells (STAGS) development effort, STAGS performance for selected demonstration problems, and STAGS application problems illustrating selected advanced features available in the STAGS Version 5.0. Each problem is discussed including selected background information and reference solutions when available. The modeling and solution approach for each problem is described and illustrated. Numerical results are presented and compared with reference solutions, test data, and/or results obtained from mesh refinement studies. These solutions provide an indication of the overall capabilities of the STAGS nonlinear finite element analysis tool and provide users with representative cases, including input files, to explore these capabilities that may then be tailored to other applications.

  1. Bicriteria network design problems

    SciTech Connect

    Marathe, M.V.; Ravi, R.; Sundaram, R.; Ravi, S.S.; Rosenkrantz, D.J.; Hunt, H.B. III

    1997-11-20

    The authors study a general class of bicriteria network design problems. A generic problem in this class is as follows: Given an undirected graph and two minimization objectives (under different cost functions), with a budget specified on the first, find a subgraph from a given subgraph class that minimizes the second objective subject to the budget on the first. They consider three different criteria -- the total edge cost, the diameter and the maximum degree of the network. Here, they present the first polynomial-time approximation algorithms for a large class of bicriteria network design problems for the above mentioned criteria. The following general types of results are presented. First, they develop a framework for bicriteria problems and their approximations. Second, when the two criteria are the same they present a black box parametric search technique. This black box takes in as input an (approximation) algorithm for the criterion situation and generates an approximation algorithm for the bicriteria case with only a constant factor loss in the performance guarantee. Third, when the two criteria are the diameter and the total edge costs they use a cluster based approach to devise approximation algorithms. The solutions violate both the criteria by a logarithmic factor. Finally, for the class of treewidth-bounded graphs, they provide pseudopolynomial-time algorithms for a number of bicriteria problems using dynamic programming. The authors show how these pseudopolynomial-time algorithms can be converted to fully polynomial-time approximation schemes using a scaling technique.

  2. An Evaluation Study of Adult Basic Education in Maine.

    ERIC Educational Resources Information Center

    Maine Univ., Orono. Div. of Continuing Education.

    An evaluation study of adult basic education in Maine (ABE) was made by the University of Maine's Continuing Education Division. It was found that during FY 1968-69 ABE programs had reached 1034 persons of a potential ABE population of 88,539. Chapter I summarizes the findings and recommendations. Chapter II presents the design of the study.…

  3. Throat Problems (Symptom Checker)

    MedlinePlus

    ... BMI Calculator myhealthfinder Immunization Schedules Nutrient Shortfall Questionnaire Throat ProblemsThroat pain and mouth sores, along with other ... Children Shoulder Problems Skin Rashes & Other Skin Problems Throat Problems Tooth Problems Urination Problems Back to Symptoms ...

  4. Water Past and Present

    NASA Technical Reports Server (NTRS)

    2008-01-01

    This image of sulfate and water ice deposits in the Olympia Undae region of Mars was taken by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) at 2213 UTC on October 2, 2006 (6:13 p.m. EDT) near 81.6 degrees north latitude, 188.9 degrees east longitude. CRISM's image was taken in 544 colors covering 0.36-3.92 micrometers, and shows features as small as 20 meters (66 feet) across.

    Olympia Undae is a large dune field that stretches some 1,100 kilometers (684 miles) across the northern polar region of Mars, just south of the ice cap. The region holds a vast expanse of complex, shifting dunes and is best described as a sand sea or erg similar to the Sahara.

    The two images above provide interesting clues into Mars' history by revealing the planet's wet past and frozen present. The left image is an infrared, false-color image that reveals dark-colored dunes overlying a lighter substrate. Spectral data from CRISM and its sister instrument OMEGA suggest similar compositions of these dunes and the dark basal, or lowermost, unit of the north polar layered deposits. HIRISE images revealed cross-bedding (crossed layers that are oriented at a different angle to the main layer) in this dark unit. On Earth, cross-bedded sediments can form in both windy and watery environments. The dark polar basal unit on Mars is interpreted as a sand sheet underlying and pre-dating the ice, and now being eroded to dunes by the Martian winds.

    The mineralogy of the Olympia Undae region holds a record of past water. CRISM spectral data (right image) shows that the darker dunes are rich in polyhydrated sulfate (sulfates with more than one water molecule incorporated into each molecule of the mineral). The mineral gypsum is a polyhydrated sulfate, and the most likely constituent in these dunes. The gypsum probably formed by evaporation of ancient, saline water or by aqueous alteration of the silicate portion of the dune material. Areas shaded in red are cover by

  5. Teaching Presentation Skills

    ERIC Educational Resources Information Center

    Baker, William H.; Thompson, Michael P.

    2004-01-01

    Effective teaching of presentation skills focuses on the most important element of the presentation--the message itself. Some instructors place the heaviest emphasis on the messenger (the presenter) and focus their presentation feedback on all the presenter is doing wrong--saying "um," gesturing awkwardly, and so forth. When students receive this…

  6. Data Mining SIAM Presentation

    NASA Technical Reports Server (NTRS)

    Srivastava, Ashok; McIntosh, Dawn; Castle, Pat; Pontikakis, Manos; Diev, Vesselin; Zane-Ulman, Brett; Turkov, Eugene; Akella, Ram; Xu, Zuobing; Kumaresan, Sakthi Preethi

    2006-01-01

    This viewgraph document describes the data mining system developed at NASA Ames. Many NASA programs have large numbers (and types) of problem reports.These free text reports are written by a number of different people, thus the emphasis and wording vary considerably With so much data to sift through, analysts (subject experts) need help identifying any possible safety issues or concerns and help them confirm that they haven't missed important problems. Unsupervised clustering is the initial step to accomplish this; We think we can go much farther, specifically, identify possible recurring anomalies. Recurring anomalies may be indicators of larger systemic problems. The requirement to identify these anomalies has led to the development of Recurring Anomaly Discovery System (ReADS).

  7. Space shuttle main engine high pressure fuel pump aft platform seal cavity flow analysis

    NASA Technical Reports Server (NTRS)

    Lowry, S. A.; Keeton, L. W.

    1987-01-01

    A general purpose, three-dimensional computational fluid dynamics code named PHOENICS, developed by CHAM Inc., is used to model the flow in the aft-platform seal cavity in the high pressure fuel pump of the space shuttle main engine. The model is used to predict the temperatures, velocities, and pressures in the cavity for six different sets of boundary conditions. The results are presented as input for further analysis of two known problems in the region, specifically: erratic pressures and temperatures in the adjacent coolant liner cavity and cracks in the blade shanks near the outer diameter of the aft-platform seal.

  8. Inverse heat conduction problems

    NASA Astrophysics Data System (ADS)

    Orlande, Helcio Rangel Barreto

    We present the solution of the following inverse problems: (1) Inverse Problem of Estimating Interface Conductance Between Periodically Contacting Surfaces; (2) Inverse Problem of Estimating Interface Conductance During Solidification via Conjugate Gradient Method; (3) Determination of the Reaction Function in a Reaction-Diffusion Parabolic Problem; and (4) Simultaneous Estimation of Thermal Diffusivity and Relaxation Time with Hyperbolic Heat Conduction Model. Also, we present the solution of a direct problem entitled: Transient Thermal Constriction Resistance in a Finite Heat Flux Tube. The Conjugate Gradient Method with Adjoint Equation was used in chapters 1-3. The more general function estimation approach was treated in these chapters. In chapter 1, we solve the inverse problem of estimating the timewise variation of the interface conductance between periodically contacting solids, under quasi-steady-state conditions. The present method is found to be more accurate than the B-Spline approach for situations involving small periods, which are the most difficult on which to perform the inverse analysis. In chapter 2, we estimate the timewise variation of the interface conductance between casting and mold during the solidification of aluminum. The experimental apparatus used in this study is described. In chapter 3, we present the estimation of the reaction function in a one dimensional parabolic problem. A comparison of the present function estimation approach with the parameter estimation technique, wing B-Splines to approximate the reaction function, revealed that the use of function estimation reduces the computer time requirements. In chapter 4 we present a finite difference solution for the transient constriction resistance in a cylinder of finite length with a circular contact surface. A numerical grid generation scheme was used to concentrate grid points in the regions of high temperature gradients in order to reduce discretization errors. In chapter 6, we

  9. The Left Main Complication of the Bentall’s Procedure

    PubMed Central

    Anastasius, Malcolm; Hillis, Graham; Yiannikas, John

    2013-01-01

    We present two interesting cases of critical left main stenosis following the Bentall’s procedure, with each case having a different outcome. There will also be brief discussion of the treatment for this complication.

  10. Subpart HH Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  11. Subpart A Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  12. Subpart DD Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  13. Subpart T Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  14. Subpart OO Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  15. Subpart L Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  16. Subpart W Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  17. Subpart RR Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  18. Subpart AA Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  19. Subpart I Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  20. Subpart NN Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  1. Subpart FF Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  2. Subpart MM Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  3. Subpart G Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  4. Subpart SS Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  5. Subpart N Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  6. Subpart PP Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  7. Subpart Z Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  8. Subpart S Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  9. Subpart V Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  10. Subpart QQ Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  11. Subpart X Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  12. Subpart Y Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  13. Subpart P Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  14. Subpart D Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  15. Subpart C Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  16. Subpart II Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  17. Subpart TT Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  18. Subpart UU Training Presentations

    EPA Pesticide Factsheets

    EPA has produced the following training presentation(s) for reporters subject to this subpart. Generally, these presentations explain the rule or show how to use the reporting system e-GGRT to submit annual GHG reports to EPA.

  19. Space Shuttle Main Engine Flies High

    NASA Technical Reports Server (NTRS)

    1996-01-01

    A Space Shuttle Main Engine is being lowered onto its handler before its journey to the test complex at Stennis Space Center. This building is where partially assembled Space Shuttle Main Engines are received and prepared for testing.

  20. Agreement between University of Maine and University of Maine Professional Staff Association, Professional Unit, July 1, 1985-June 30, 1987.

    ERIC Educational Resources Information Center

    National Education Association, Washington, DC.

    The collective bargaining agreement between the University of Maine and the University of Maine Professional Staff Association, the professional unit of the National Education Association, covering the period July 1, 1985-June 30, 1987 is presented. Unit members are university employees and professional and administrative staff. Items covered in…

  1. Children Solve Problems.

    ERIC Educational Resources Information Center

    De Bono, Edward

    A group of children were presented with several tasks, including the invention of a sleep machine and a machine to weigh elephants. The tasks were chosen to involve the children in coping with problems of a distinct character. A study of the children's drawings and interpretations shows that children's thinking ability is not very different from…

  2. Problem Patron Manual.

    ERIC Educational Resources Information Center

    Brown, Marion, Comp.; And Others

    This document presents guidelines for handling disruptive behavior in the Schenectady County Public Library (New York). Specific responses are listed for dealing with questions about library selection policy and sudden patron illness or injury. Also listed are responses to problem situations involving angry or irate patrons, assault or physically…

  3. Constructed-Response Problems

    ERIC Educational Resources Information Center

    Swinford, Ashleigh

    2016-01-01

    With rigor outlined in state and Common Core standards and the addition of constructed-response test items to most state tests, math constructed-response questions have become increasingly popular in today's classroom. Although constructed-response problems can present a challenge for students, they do offer a glimpse of students' learning through…

  4. The Eight Queens Problem.

    ERIC Educational Resources Information Center

    Olson, Alton T.

    1993-01-01

    Presents a series of solution methods to the Eight Queens Problem of placing eight queens on a chess board so that no one queen can capture another. Solution methods progress from empirical approaches to the use of computer algorithms. Geometric transformations are used to find other solutions. (MDH)

  5. Problem Classification in Counseling.

    ERIC Educational Resources Information Center

    Klimes, Rudolf E.

    1992-01-01

    This paper describes a framework for counselors that will help them classify personal and social problems of clients for base-line and end-line comparisons. Counseling's goal, as presented here, is to help individuals for a lifetime; therapy is not seen as the giving of advice or solutions, but as a teaching process through which clients become…

  6. Asteroid hazard, real problems and practical actions

    NASA Astrophysics Data System (ADS)

    Lomakin, I. V.; Martynov, M. B.; Pol', V. G.; Simonov, A. V.

    2011-12-01

    The paper refers to the current status of asteroid hazard in Russia and abroad. The authors emphasize the relevance of a sober assessment of its real state and specific circumstances working from the principle of reasonable sufficiency. The paper presents a practical approach to the asteroid hazard problem. It consists of a proposal for a mission to the Apophis asteroid and to define the main parameters of this hazardous celestial body. The article also considers how the spacecraft would look, as well as its mission profile for the period of 2012-2014.

  7. Air and gas pockets in sewerage pressure mains.

    PubMed

    Lubbers, C L; Clemens, F

    2005-01-01

    In The Netherlands, wastewater is collected in municipal areas and transported to large centralised WWTPs by means of an extensive system of pressure mains. Over the past decades these pressure mains did not receive much attention in terms of monitoring of performance or maintenance. For that reason, in practice their state of functioning is often not known. Failure of operation is only noticed when the capacity of the system proves to be insufficient to fulfil the minimum design capacity demand. A recent inventory showed that half of the pressure mains show an increased pressure loss for no directly obvious reason. Many causes may account for the reduction of the system's nominal capacity like an increased wall roughness, scaling or occurrence of free gas in the pipeline. The occurrence of free gas may be caused by degassing of dissolved (bio) gas or by air entrained at the pumps' inlet or at air valves. A research study is started that will focus on three main issues: The description of the gas-water phenomena in wastewater pressure mains with respect to transportation and dynamic hydraulic behaviour, A method to diagnose gas problems, and To overcome future problems by either applying remedial measures or improving the design of wastewater pressure systems. For this study, two experimental facilities are constructed, a small circuit for the study of multi-phase flow and a second, larger one for the research into diagnostic methods. This paper describes the preliminary results of the experiments in the multi-phase circuit.

  8. 30 CFR 57.6160 - Main facilities.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Main facilities. 57.6160 Section 57.6160...-Underground Only § 57.6160 Main facilities. (a) Main facilities used to store explosive material underground... facilities will not prevent escape from the mine, or cause detonation of the contents of another...

  9. Left main bronchus compression due to main pulmonary artery dilatation in pulmonary hypertension: two case reports.

    PubMed

    Jaijee, Shareen K; Ariff, Ben; Howard, Luke; O'Regan, Declan P; Gin-Sing, Wendy; Davies, Rachel; Gibbs, J Simon R

    2015-12-01

    Pulmonary arterial dilatation associated with pulmonary hypertension may result in significant compression of local structures. Left main coronary artery and left recurrent laryngeal nerve compression have been described. Tracheobronchial compression from pulmonary arterial dilatation is rare in adults, and there are no reports in the literature of its occurrence in idiopathic pulmonary arterial hypertension. Compression in infants with congenital heart disease has been well described. We report 2 cases of tracheobronchial compression: first, an adult patient with idiopathic pulmonary arterial hypertension who presents with symptomatic left main bronchus compression, and second, an adult patient with Eisenmenger ventricular septal defect and right-sided aortic arch, with progressive intermedius and right middle lobe bronchi compression in association with enlarged pulmonary arteries.

  10. Modern problems of thermodynamics

    NASA Astrophysics Data System (ADS)

    Novikov, I. I.

    2012-12-01

    The role of energy and methods of its saving for the development of human society and life are analyzed. The importance of future use of space energy flows and energy of water and air oceans is emphasized. The authors consider the idea of the unit for production of electric energy and pure substances using sodium chloride which reserves are limitless on the planet. Looking retrospectively at the development of power engineering from the elementary fire to modern electric power station, we see that the used method of heat production, namely by direct interaction of fuel and oxidizer, is the simplest. However, it may be possible to combust coal, i.e., carbon in salt melt, for instance, sodium chloride that would be more rational and efficient. If the stated problems are solved positively, we would master all energy properties of the substance; and this is the main problem of thermodynamics being one of the sciences on energy.

  11. ZDR - Simulation Studies of the NLC Main Linacs

    SciTech Connect

    Assmann, R.

    2005-01-26

    This study was published as part of the Next Linear Collider (NLC) Zeroth order Design Report (ZDR) [1]. It addresses the problems of transporting very small emittance beams in the main linacs of the NLC. Several mechanisms of emittance dilution and correction are calculated in detail. The results demonstrate the feasibility of the NLC main linac design under the assumption that the specified device tolerances are met. The full text of the ZDR is available on the WWW under http://www.slac.stanford.edu/accel/nlc/zdr/.

  12. Detection of gas pockets in pressurised wastewater mains using dynamic system response analysis.

    PubMed

    Lubbers, C; Clemens, F

    2007-01-01

    In the Netherlands, wastewater is mostly collected in combined sewer system and transported to a WWTP through pressure mains. These pressure mains form an element of the system that did not receive much attention lately with respect to monitoring of performance and maintenance. For that reason, their state of functioning is often not known. Failure of operation is only noticed when during storm conditions the capacity of the system drops, resulting in undesirable discharge to the surface water. A recently made inventory showed that about half of the pressure mains show increased pressure loss for no obvious reason. Reduction of the systems nominal capacity can result from many causes, like increased wall roughness, scaling and the occurrence of free gas in the pipeline. The occurrence of gas-pockets may be caused by degassing of dissolved gas, but also by air entrapment at the pump inlet or at air valves. A research project is started that will be carried out from 2003 to 2005. This project focuses on three goals: the description of the gas-water transport phenomena in wastewater pressure mains, a method to detect and diagnose gas problems, and to overcome future problems by either applying remedial measures or by developing improved design methods for wastewater pressure systems. This paper describes the layout of the experimental set-up to detect and diagnose gas problems and the first results of the experiments are presented and discussed. The results are used to validate a model (Wanda) developed by Delft Hydraulics that describes the phenomena involved in surges in air/water transport.

  13. Science Directorate Publications and Presentations

    NASA Technical Reports Server (NTRS)

    Summers, F. G. (Compiler)

    2000-01-01

    This document lists the significant publications and presentation of the Science Directorate during the period January 1-December 31, 1999. Entries in the main part of the document are categorized according to NASA Reports (arranged by report number). Open Literature, and Presentations (arranged alphabetically by title). Most of the articles listed under Open Literature have appeared in refereed professional journals, books, monographs, or conference proceedings. Although many published abstracts are eventually expanded into full papers for publication in scientific and technical journals, they are often sufficiently comprehensive to include the significant results of the research reported. Therefore, published abstracts are listed separately in a section under Open Literature.

  14. Problems In Indoor Mapping and Modelling

    NASA Astrophysics Data System (ADS)

    Zlatanova, S.; Sithole, G.; Nakagawa, M.; Zhu, Q.

    2013-11-01

    Research in support of indoor mapping and modelling (IMM) has been active for over thirty years. This research has come in the form of As-Built surveys, Data structuring, Visualisation techniques, Navigation models and so forth. Much of this research is founded on advancements in photogrammetry, computer vision and image analysis, computer graphics, robotics, laser scanning and many others. While IMM used to be the privy of engineers, planners, consultants, contractors, and designers, this is no longer the case as commercial enterprises and individuals are also beginning to apply indoor models in their business process and applications. There are three main reasons for this. Firstly, the last two decades have seen greater use of spatial information by enterprises and the public. Secondly, IMM has been complimented by advancements in mobile computing and internet communications, making it easier than ever to access and interact with spatial information. Thirdly, indoor modelling has been advanced geometrically and semantically, opening doors for developing user-oriented, context-aware applications. This reshaping of the public's attitude and expectations with regards to spatial information has realised new applications and spurred demand for indoor models and the tools to use them. This paper examines the present state of IMM and considers the research areas that deserve attention in the future. In particular the paper considers problems in IMM that are relevant to commercial enterprises and the general public, groups this paper expects will emerge as the greatest users IMM. The subject of indoor modelling and mapping is discussed here in terms of Acquisitions and Sensors, Data Structures and Modelling, Visualisation, Applications, Legal Issues and Standards. Problems are discussed in terms of those that exist and those that are emerging. Existing problems are those that are currently being researched. Emerging problems are those problems or demands that are

  15. The cost of performance - A comparison of the space transportation main engine and the Space Shuttle main engine

    NASA Technical Reports Server (NTRS)

    Barisa, B. B.; Flinchbaugh, G. D.; Zachary, A. T.

    1989-01-01

    This paper compares the cost of the Space Shuttle Main Engine (SSME) and the Space Transportation Main Engine (STME) proposed by the Advanced Launch System Program. A brief description of the SSME and STME engines is presented, followed by a comparison of these engines that illustrates the impact of focusing on acceptable performance at minimum cost (as for the STME) or on maximum performance (as for the SSME). Several examples of cost reduction methods are presented.

  16. Collaborative Problem Solving in Shared Space

    ERIC Educational Resources Information Center

    Lin, Lin; Mills, Leila A.; Ifenthaler, Dirk

    2015-01-01

    The purpose of this study was to examine collaborative problem solving in a shared virtual space. The main question asked was: How will the performance and processes differ between collaborative problem solvers and independent problem solvers over time? A total of 104 university students (63 female and 41 male) participated in an experimental…

  17. Hypoparathyroidism presenting as cognitive dysfunction

    PubMed Central

    Kumar, Gunjan; Kaur, Darshpreet; Aggarwal, Puneet; Khurana, Tilak

    2013-01-01

    Metabolic dysfunction in hypoparathyroidism is an important cause of intracranial calcifications, which cause cognitive impairment depending on the calcified areas leading to difficulties in executing activities of daily living. We report a case of a 25-year-old man who presented with gradually decreasing organisational skills, memory problems and difficulty in carrying out daily activities. CT imaging of the brain showed extensive calcification in the basal ganglia and cerebral white matter. Comprehensive health-related quality of life and cognitive assessment revealed significant affliction in his activities of daily living along with impairment in recall memory, executive functions and verbal fluency. Owing to late diagnosis, chronicity of cognitive problems could not prevent him from discontinuing his college education. PMID:23709145

  18. Hypoparathyroidism presenting as cognitive dysfunction.

    PubMed

    Kumar, Gunjan; Kaur, Darshpreet; Aggarwal, Puneet; Khurana, Tilak

    2013-05-23

    Metabolic dysfunction in hypoparathyroidism is an important cause of intracranial calcifications, which cause cognitive impairment depending on the calcified areas leading to difficulties in executing activities of daily living. We report a case of a 25-year-old man who presented with gradually decreasing organisational skills, memory problems and difficulty in carrying out daily activities. CT imaging of the brain showed extensive calcification in the basal ganglia and cerebral white matter. Comprehensive health-related quality of life and cognitive assessment revealed significant affliction in his activities of daily living along with impairment in recall memory, executive functions and verbal fluency. Owing to late diagnosis, chronicity of cognitive problems could not prevent him from discontinuing his college education.

  19. Geometric and analytic problems on bicomplex plane

    NASA Astrophysics Data System (ADS)

    Dimiev, Stancho; Stoev, Peter; Stoilova, Stanislava

    2015-11-01

    Let us recall that the bicomplex plane is a complex ring of complex dimension 2. It consists of couples of the kind (z, w) = z + jw, where z and w are complex numbers and j is a symbol with the property j2 = -1. We note that the bicomplex plane admits singular points. The set of these singular points coincides with the cross-choped set of complex bisectrices (z, ±z), z is a complex. The main problem in the function theory on the bicomplex plane is to describe the interconnection between the same theory of the cross-choped subset and whole bicomplex plane. The first theory is of one complex variable and the second one is of two complex variables. Another problems are related with the comformal mappings and the movement of a partials of this subset on the whole one. Presented paper is a start studies in this direction.

  20. Lageos orbit and the albedo problem

    NASA Technical Reports Server (NTRS)

    Rubincam, D. P.

    1984-01-01

    The objective was to obtain an analytic expression for the radiation pressure force on a satellite due to sunlight reflected from the Earth. The Lageos satellite undergoes unexplained along-track accelerations. These accelerations are believed to be due mainly to terrestrial radiation pressure. The effect of sunlight reflected off the surface of the Earth must thus be modeled to insure an accurate orbit for Lageos. An accurate orbit is necessary for carrying out Lageos' mission of measuring tectonic plate motion, polar motion, and Earth rotation. The present investigation focuses on a spherical harmonic approach to the problem. An equation for the force was obtained by assuming the Earth's surface reflects sunlight according to Lambert's law. The equation is an integral over the whole Earth's surface. Expressions occurring inside the integral are expressed in terms of spherical harmonics. The problem is thus reduced to integrating products of spherical harmonics.

  1. BOOK REVIEW: Inverse Problems. Activities for Undergraduates

    NASA Astrophysics Data System (ADS)

    Yamamoto, Masahiro

    2003-06-01

    This book is a valuable introduction to inverse problems. In particular, from the educational point of view, the author addresses the questions of what constitutes an inverse problem and how and why we should study them. Such an approach has been eagerly awaited for a long time. Professor Groetsch, of the University of Cincinnati, is a world-renowned specialist in inverse problems, in particular the theory of regularization. Moreover, he has made a remarkable contribution to educational activities in the field of inverse problems, which was the subject of his previous book (Groetsch C W 1993 Inverse Problems in the Mathematical Sciences (Braunschweig: Vieweg)). For this reason, he is one of the most qualified to write an introductory book on inverse problems. Without question, inverse problems are important, necessary and appear in various aspects. So it is crucial to introduce students to exercises in inverse problems. However, there are not many introductory books which are directly accessible by students in the first two undergraduate years. As a consequence, students often encounter diverse concrete inverse problems before becoming aware of their general principles. The main purpose of this book is to present activities to allow first-year undergraduates to learn inverse theory. To my knowledge, this book is a rare attempt to do this and, in my opinion, a great success. The author emphasizes that it is very important to teach inverse theory in the early years. He writes; `If students consider only the direct problem, they are not looking at the problem from all sides .... The habit of always looking at problems from the direct point of view is intellectually limiting ...' (page 21). The book is very carefully organized so that teachers will be able to use it as a textbook. After an introduction in chapter 1, sucessive chapters deal with inverse problems in precalculus, calculus, differential equations and linear algebra. In order to let one gain some insight

  2. Marketing through Video Presentations.

    ERIC Educational Resources Information Center

    Newhart, Donna

    1989-01-01

    Discusses the advantages of using video presentations as marketing tools. Includes information about video news releases, public service announcements, and sales/marketing presentations. Describes the three stages in creating a marketing video: preproduction planning; production; and postproduction. (JOW)

  3. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Mai, T.

    2012-08-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. This presentation was presented in a Wind Powering America webinar on August 15, 2012 and is now available through the Wind Powering America website.

  4. Presenting Food Science Effectively

    ERIC Educational Resources Information Center

    Winter, Carl K.

    2016-01-01

    While the need to present food science information effectively is viewed as a critical competency for food scientists by the Institute of Food Technologists, most food scientists may not receive adequate training in this area. Effective presentations combine both scientific content and delivery mechanisms that demonstrate presenter enthusiasm for…

  5. Make Your Presentation Powerful

    ERIC Educational Resources Information Center

    Palmer, Erik

    2015-01-01

    "I was planning on doing a lot of work today during your presentation, but I couldn't get anything done. I just had to pay attention!" The author received this unexpected feedback from a teacher at the end of a presentation he gave, and although he considered it a compliment, it made him reflect on the dire state of presentations in…

  6. Solving Math Problems Approximately: A Developmental Perspective

    PubMed Central

    Ganor-Stern, Dana

    2016-01-01

    Although solving arithmetic problems approximately is an important skill in everyday life, little is known about the development of this skill. Past research has shown that when children are asked to solve multi-digit multiplication problems approximately, they provide estimates that are often very far from the exact answer. This is unfortunate as computation estimation is needed in many circumstances in daily life. The present study examined 4th graders, 6th graders and adults’ ability to estimate the results of arithmetic problems relative to a reference number. A developmental pattern was observed in accuracy, speed and strategy use. With age there was a general increase in speed, and an increase in accuracy mainly for trials in which the reference number was close to the exact answer. The children tended to use the sense of magnitude strategy, which does not involve any calculation but relies mainly on an intuitive coarse sense of magnitude, while the adults used the approximated calculation strategy which involves rounding and multiplication procedures, and relies to a greater extent on calculation skills and working memory resources. Importantly, the children were less accurate than the adults, but were well above chance level. In all age groups performance was enhanced when the reference number was smaller (vs. larger) than the exact answer and when it was far (vs. close) from it, suggesting the involvement of an approximate number system. The results suggest the existence of an intuitive sense of magnitude for the results of arithmetic problems that might help children and even adults with difficulties in math. The present findings are discussed in the context of past research reporting poor estimation skills among children, and the conditions that might allow using children estimation skills in an effective manner. PMID:27171224

  7. The Present and Future Global Burden of the Inherited Disorders of Hemoglobin.

    PubMed

    Piel, Frédéric B

    2016-04-01

    The inherited disorders of hemoglobin represent the most common monogenic diseases. This article provides a brief description of the main inherited disorders of hemoglobin and their classification, and summarizes progress made in the last decade toward a better awareness and recognition of these disorders as a global health problem. Also presented are the main demographic, genetic, and environmental factors that influence the present and future health burden of these disorders. The strengths and limitations of existing estimates and current health policies in high-, low-, and middle-income countries are discussed.

  8. On optimal solutions of the constrained ℓ 0 regularization and its penalty problem

    NASA Astrophysics Data System (ADS)

    Zhang, Na; Li, Qia

    2017-02-01

    The constrained {{\\ell}0} regularization plays an important role in sparse reconstruction. A widely used approach for solving this problem is the penalty method, of which the least square penalty problem is a special case. However, the connections between global minimizers of the constrained {{\\ell}0} problem and its penalty problem have never been studied in a systematic way. This work provides a comprehensive investigation on optimal solutions of these two problems and their connections. We give detailed descriptions of optimal solutions of the two problems, including existence, stability with respect to the parameter, cardinality and strictness. In particular, we find that the optimal solution set of the penalty problem is piecewise constant with respect to the penalty parameter. Then we analyze in-depth the relationship between optimal solutions of the two problems. It is shown that, in the noisy case the least square penalty problem probably has no common optimal solutions with the constrained {{\\ell}0} problem for any penalty parameter. Under a mild condition on the penalty function, we establish that the penalty problem has the same optimal solution set as the constrained {{\\ell}0} problem when the penalty parameter is sufficiently large. Based on the conditions, we further propose exact penalty problems for the constrained {{\\ell}0} problem. Finally, we present a numerical example to illustrate our main theoretical results.

  9. [Ethical problems in organ transplantation].

    PubMed

    Valenta, J; Treska, V; Hasman, D

    1999-02-01

    Organ transplantation is an accepted therapeutic method with good results, but it is connected with many not only medical but also ethical problems. One of the most important problems is the donor programme. In cadaverous donors the main ethical and legal question is the decision who can issue the consent with organ retrieval; in living donors it is the problem of motivation and financial compensation. Allocation of organs with low compatibility or from non-ideal donors, and the recipient's consent in these cases may involve difficult decisions.

  10. Lysine Deacetylase Inhibitors in Parasites: Past, Present, and Future Perspectives.

    PubMed

    Hailu, Gebremedhin S; Robaa, Dina; Forgione, Mariantonietta; Sippl, Wolfgang; Rotili, Dante; Mai, Antonello

    2017-03-15

    Current therapies for human parasite infections rely on a few drugs, most of which have severe side effects, and their helpfulness is being seriously compromised by the drug resistance problem. Globally, this is pushing discovery research of antiparasitic drugs toward new agents endowed with new mechanisms of action. By using a "drug repurposing" strategy, histone deacetylase inhibitors (HDACi), which are presently clinically approved for cancer use, are now under investigation for various parasite infections. Because parasitic Zn(2+)- and NAD(+)-dependent HDACs play crucial roles in the modulation of parasite gene expression and many of them are pro-survival for several parasites under various conditions, they are now emerging as novel potential antiparasitic targets. This Perspective summarizes the state of knowledge of HDACi (both class I/II HDACi and sirtuin inhibitors) targeted to the main human parasitic diseases (schistosomiasis, malaria, trypanosomiasis, leishmaniasis, and toxoplasmosis) and provides visions into the main issues that challenge their development as antiparasitic agents.

  11. Chromospheric variations in main-sequence stars

    NASA Technical Reports Server (NTRS)

    Baliunas, S. L.; Donahue, R. A.; Soon, J. H.; Horne, J. H.; Frazer, J.; Woodard-Eklund, L.; Bradford, M.; Rao, L. M.; Wilson, O. C.; Zhang, Q.

    1995-01-01

    The fluxes in passbands 0.1 nm wide and centered on the Ca II H and K emission cores have been monitored in 111 stars of spectral type F2-M2 on or near the main sequence in a continuation of an observing program started by O. C. Wilson. Most of the measurements began in 1966, with observations scheduled monthly until 1980, when observations were schedueld sevral times per week. The records, with a long-term precision of about 1.5%, display fluctuations that can be idntified with variations on timescales similar to the 11 yr cycle of solar activity as well as axial rotation, and the growth and decay of emitting regions. We present the records of chromospheric emission and general conclusions about variations in surface magnetic activity on timescales greater than 1 yr but less than a few decades. The results for stars of spectral type G0-K5 V indicate a pattern of change in rotation and chromospheric activity on an evolutionary timescale, in which (1) young stars exhibit high average levels of activity, rapid rotation rates, no Maunder minimum phase and rarely display a smooth, cyclic variation; (2) stars of intermediate age (approximately 1-2 Gyr for 1 solar mass) have moderate levels of activity and rotation rates, and occasional smooth cycles; and (3) stars as old as the Sun and older have slower rotation rates, lower activity levels and smooth cycles with occasional Maunder minimum-phases.

  12. Space shuttle main engine: Interactive design challenges

    NASA Technical Reports Server (NTRS)

    Mccarty, J. P.; Wood, B. K.

    1985-01-01

    The operating requirements established by NASA for the SSME were considerably more demanding than those for earlier rocket engines used in the military launch vehicles or Apollo program. The SSME, in order to achieve the high performance, low weight, long life, reusable objectives, embodied technical demands far in excess of its predecessor rocket engines. The requirements dictated the use of high combustion pressure and the staged combustion cycle which maximizes performance through total use of all propellants in the main combustion process. This approach presented a myriad of technical challenges for maximization of performance within attainable state of the art capabilities for operating pressures, operating temperatures and rotating machinery efficiencies. Controlling uniformity of the high pressure turbomachinery turbine temperature environment was a key challenge for thrust level and life capability demanding innovative engineering. New approaches in the design of the components were necessary to accommodate the multiple use, minimum maintenance objectives. Included were the use of line replaceable units to facilitate field maintenance automatic checkout and internal inspection capabilities.

  13. Analysis of thermoelastohydrodynamic performance of journal misaligned engine main bearings

    NASA Astrophysics Data System (ADS)

    Bi, Fengrong; Shao, Kang; Liu, Changwen; Wang, Xia; Zhang, Jian

    2015-05-01

    To understand the engine main bearings' working condition is important in order to improve the performance of engine. However, thermal effects and thermal effect deformations of engine main bearings are rarely considered simultaneously in most studies. A typical finite element model is selected and the effect of thermoelastohydrodynamic(TEHD) reaction on engine main bearings is investigated. The calculated method of main bearing's thermal hydrodynamic reaction and journal misalignment effect is finite difference method, and its deformation reaction is calculated by using finite element method. The oil film pressure is solved numerically with Reynolds boundary conditions when various bearing characteristics are calculated. The whole model considers a temperature-pressure-viscosity relationship for the lubricant, surface roughness effect, and also an angular misalignment between the journal and the bearing. Numerical simulations of operation of a typical I6 diesel engine main bearing is conducted and importance of several contributing factors in mixed lubrication is discussed. The performance characteristics of journal misaligned main bearings under elastohydrodynamic(EHD) and TEHD loads of an I6 diesel engine are received, and then the journal center orbit movement, minimum oil film thickness and maximum oil film pressure of main bearings are estimated over a wide range of engine operation. The model is verified through the comparison with other present models. The TEHD performance of engine main bearings with various effects under the influences of journal misalignment is revealed, this is helpful to understand EHD and TEHD effect of misaligned engine main bearings.

  14. Maine Environmental Priorities Project: Summary of the Reports from the Technical Working Groups to the Steering Committee.

    ERIC Educational Resources Information Center

    National Association for Environmental Education, Miami, FL.

    The Maine Environmental Priorities Project (MEPP) is a comparative risk project designed to identify, compare, and rank the most serious environmental problems facing Maine. Once the problems are analyzed and ranked according to their threat or risk to Maine's ecological health, human health, and quality of life, the project will propose…

  15. Neurobrucellosis Presented with a Hyperacute Onset: A Case Report

    PubMed Central

    KHADEMI, Arefeh; POURSADEGHFARD, Maryam; NIKANDISH NOUBAR, Reza

    2016-01-01

    Neurobrucellosis is uncommon; however, it is an important complication of brucellosis, which could be seen in any stage of the disease. It presents with different kinds of neurology manifestations and diagnosis is mainly made on history, physical examination and laboratory tests. The clinical course of the disease is relatively insidious and the most common pattern of presentation is subacute or chronic. It has a long-term treatment period and its response to treatment is slow. Here, we report a case of an apparent healthy 25 yr-old Afghani woman from Fars Province (south of Iran) that presented at first with hyperacute onset of headache and abnormal behavior and diagnosed neurobrucellosis in Nov 2015. In endemic areas, neurobrucellosis should be considered for each patient referred with unexplained neurological problems. PMID:28053932

  16. Neonatal Hemophilia: A Rare Presentation

    PubMed Central

    Proença, Elisa; Godinho, Cristina; Oliveira, Dulce; Guedes, Ana; Morais, Sara; Carvalho, Carmen

    2015-01-01

    Hemophilia A is a X-linked hereditary condition that lead to decreased factor VIII activity, occurs mainly in males. Decreased factor VIII activity leads to increased risk of bleeding events. During neonatal period, diagnosis is made after post-partum bleeding complication or unexpected bleeding after medical procedures. Subgaleal hemorrhage during neonatal period is a rare, severe extracranial bleeding with high mortality and usually related to traumatic labor or coagulation disorders. Subgaleal hemorrhage complications result from massive bleeding. We present a neonate with unremarkable family history and uneventful pregnancy with a vaginal delivery with no instrumentation, presenting with severe subgaleal bleeding at 52 hours of life. Aggressive support measures were implemented and bleeding managed. The unexpected bleeding lead to a coagulation study and the diagnosis of severe hemophilia A. There were no known sequelae. This case shows a rare hemophilia presentation reflecting the importance of coagulation studies when faced with unexplained severe bleeding. PMID:26734126

  17. Presentation skills for nurses.

    PubMed

    Foulkes, Mark

    2015-02-20

    This article emphasises the importance of effective presentation skills. Such skills allow nurses to share knowledge and expertise and to communicate clearly in a range of workplace scenarios. Nurses are increasingly being asked to present in formal and informal situations, such as conferences, poster presentations, job interviews, case reports and ward-based teaching. This article explores the principles underpinning the development of these skills, discusses the situations in which they could be applied and demonstrates how nurses might improve and develop as presenters.

  18. The Feline Josephus Problem

    NASA Astrophysics Data System (ADS)

    Ruskey, Frank; Williams, Aaron

    In the classic Josephus problem, elements 1, 2,...,n are placed in order around a circle and a skip value k is chosen. The problem proceeds in n rounds, where each round consists of traveling around the circle from the current position, and selecting the kth remaining element to be eliminated from the circle. After n rounds, every element is eliminated. Special attention is given to the last surviving element, denote it by j. We generalize this popular problem by introducing a uniform number of lives ℓ, so that elements are not eliminated until they have been selected for the ℓth time. We prove two main results: 1) When n and k are fixed, then j is constant for all values of ℓ larger than the nth Fibonacci number. In other words, the last surviving element stabilizes with respect to increasing the number of lives. 2) When n and j are fixed, then there exists a value of k that allows j to be the last survivor simultaneously for all values of ℓ. In other words, certain skip values ensure that a given position is the last survivor, regardless of the number of lives. For the first result we give an algorithm for determining j (and the entire sequence of selections) that uses O(n 2) arithmetic operations.

  19. A taxonomy of inductive problems.

    PubMed

    Kemp, Charles; Jern, Alan

    2014-02-01

    Inductive inferences about objects, features, categories, and relations have been studied for many years, but there are few attempts to chart the range of inductive problems that humans are able to solve. We present a taxonomy of inductive problems that helps to clarify the relationships between familiar inductive problems such as generalization, categorization, and identification, and that introduces new inductive problems for psychological investigation. Our taxonomy is founded on the idea that semantic knowledge is organized into systems of objects, features, categories, and relations, and we attempt to characterize all of the inductive problems that can arise when these systems are partially observed. Recent studies have begun to address some of the new problems in our taxonomy, and future work should aim to develop unified theories of inductive reasoning that explain how people solve all of the problems in the taxonomy.

  20. Fla. Students Turn to Maine for Diplomas

    ERIC Educational Resources Information Center

    Cavanagh, Sean

    2004-01-01

    This article reports on a student option to earn a high school diploma from a Maine private school. Frustrated in their attempts to pass the state graduation test and receive high school diplomas, some Florida students are securing the prized credentials by a different route: a private school in Lewiston, Maine. For many of those students,…

  1. 40 CFR 81.320 - Maine.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.320 Maine. Maine..., Lincoln and Waldo Cos., ME: Hancock County (part) (includes only the following cities and towns): Bar... following cities and towns): Camden, Criehaven, Cushing, Friendship, Isle au Haut, Matinicus Isle,...

  2. 40 CFR 81.320 - Maine.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.320 Maine. Maine...: Hancock County (part) (includes only the following cities and towns): Bar Harbor, Blue Hill, Brooklin... January 10, 2007 Attainment Knox County (part) (includes only the following cities and towns):...

  3. 40 CFR 81.320 - Maine.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.320 Maine. Maine... (part) (includes only the following cities and towns): Bar Harbor, Blue Hill, Brooklin, Brooksville..., 2007 Attainment Knox County (part) (includes only the following cities and towns): Camden,...

  4. 40 CFR 81.320 - Maine.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.320 Maine. Maine...., ME: Hancock County (part) (includes only the following cities and towns): Bar Harbor, Blue Hill... towns): Camden, Criehaven, Cushing, Friendship, Isle au Haut, Matinicus Isle, Muscle Ridge Shoals,...

  5. 40 CFR 81.320 - Maine.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.320 Maine. Maine...., ME: Hancock County (part) (includes only the following cities and towns): Bar Harbor, Blue Hill... towns): Camden, Criehaven, Cushing, Friendship, Isle au Haut, Matinicus Isle, Muscle Ridge Shoals,...

  6. Libraries in Maine: MedlinePlus

    MedlinePlus

    ... www.mainegeneral.org/ Bangor Dorothea Dix Psychiatric Center Behavioral Health Library 656 State Street, PO Box 926 Bangor, ME 04402-0926 207-941-4226 http://www.maine.gov/msl/services/ask.htm Eastern Maine Medical Center Hadley Parrot Health Science Library 489 State Street, PO Box 404 Bangor, ...

  7. 40 CFR 81.413 - Maine.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Maine. 81.413 Section 81.413 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) DESIGNATION OF... Visibility Is an Important Value § 81.413 Maine. Area name Acreage Public Law establishing Federal...

  8. Maine Educational Assessment School Report, Grade 4.

    ERIC Educational Resources Information Center

    Maine Department of Education, 2004

    2004-01-01

    The Maine Educational Assessment (MEA) is the state's measure of student progress in achieving the challenging academic expectations, known as "Learning Results," adopted by the Maine Legislature in 1997. This report of student performance in writing, reading, mathematics, and science and technology provides a status report of student…

  9. 21 CFR 808.69 - Maine.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EXEMPTIONS FROM FEDERAL PREEMPTION OF STATE AND LOCAL MEDICAL DEVICE REQUIREMENTS Listing of Specific State and Local Exemptions § 808.69 Maine. (a) The following Maine medical device requirement is...

  10. 21 CFR 808.69 - Maine.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EXEMPTIONS FROM FEDERAL PREEMPTION OF STATE AND LOCAL MEDICAL DEVICE REQUIREMENTS Listing of Specific State and Local Exemptions § 808.69 Maine. (a) The following Maine medical device requirement is...

  11. 78 FR 34701 - Maine Disaster #ME-00036

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-10

    ... ADMINISTRATION Maine Disaster ME-00036 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY: This is a notice of an Administrative declaration of a disaster for the State of Maine dated 05/30/2013. Incident: Apartment Complex Fire. Incident Period: 04/29/2013. Effective Date: 05/30/2013. Physical...

  12. 78 FR 34701 - Maine Disaster #ME-00037

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-10

    ... ADMINISTRATION Maine Disaster ME-00037 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY: This is a notice of an Administrative declaration of a disaster for the State of Maine dated 05/30/2013. Incident: Commercial and Residential Building Complex Fire. Incident Period: 05/03/2013. Effective Date:...

  13. The Legal Rights of Maine Women.

    ERIC Educational Resources Information Center

    Potter, Judy R.; Marshall, Gail

    This booklet is intended to help Maine women recognize and enforce their rights under Maine and federal law. It is not designed to be a substitute for lawyers' services, but to inform women of their legal rights so that they will know when to consult a lawyer or a governmental agency for assistance in enforcing these rights. Organized topically by…

  14. Maine Adult Education Director's Handbook, 2004.

    ERIC Educational Resources Information Center

    Maine Department of Education, 2004

    2004-01-01

    The Maine Adult Education Directors' Handbook offers a basic overview of the Adult and Community Education system in Maine. The information is general and intended to provide a background to the person initially becoming involved in adult education--director, teacher, school board member, advisory council member or superintendent. The Handbook is…

  15. On the variational data assimilation problem solving and sensitivity analysis

    NASA Astrophysics Data System (ADS)

    Arcucci, Rossella; D'Amore, Luisa; Pistoia, Jenny; Toumi, Ralf; Murli, Almerico

    2017-04-01

    We consider the Variational Data Assimilation (VarDA) problem in an operational framework, namely, as it results when it is employed for the analysis of temperature and salinity variations of data collected in closed and semi closed seas. We present a computing approach to solve the main computational kernel at the heart of the VarDA problem, which outperforms the technique nowadays employed by the oceanographic operative software. The new approach is obtained by means of Tikhonov regularization. We provide the sensitivity analysis of this approach and we also study its performance in terms of the accuracy gain on the computed solution. We provide validations on two realistic oceanographic data sets.

  16. Management strategies for problem behaviors in the patient with dementia.

    PubMed

    Lehninger, F W; Ravindran, V L; Stewart, J T

    1998-04-01

    Psychiatric and behavioral problems are present in most patients with dementia and are usually the clinician's main focus of management. Differential diagnosis of these problems can be challenging, but the effort is essential for planning appropriate therapy. Pharmacologic interventions are available for treatment of depression, agitation, aggression, psychotic symptoms, wandering, and sleep disorders. Given the less than favorable risk-benefit ratio of most psychotropic drugs in the population of older patients with dementia, the importance of nonpharmacologic strategies and limiting treatment goals should not be overlooked.

  17. Problem Solvers: Problem--Jesse's Train

    ERIC Educational Resources Information Center

    James, Julie; Steimle, Alice

    2014-01-01

    Persevering in problem solving and constructing and critiquing mathematical arguments are some of the mathematical practices included in the Common Core State Standards for Mathematics (CCSSI 2010). To solve unfamiliar problems, students must make sense of the situation and apply current knowledge. Teachers can present such opportunities by…

  18. As the nation goes, so goes Maine?

    PubMed

    Kilbreth, Elizabeth

    2014-06-01

    Historically, Maine has been a state with generous safety net programs and a track record of innovative efforts in health system reform, developed under the leadership of Democratic administrations and with frequent support from moderate Republicans. But the 2010 elections in Maine dramatically changed the political balance of power, anointing both a governor and a legislature ideologically at odds with the state's recent political past. Maine has become a bastion of resistance to the Patient Protection and Affordable Care Act, with a reduced Medicaid program, defunded state access initiative, and no state exchange. In addition, the state has adopted a laissez-faire approach to insurance market dysfunction. Using Maine as a case study of the shifts in national political mood, this article describes in broad brushstrokes Maine's history of health reform efforts and recent shift in political direction, and discusses some of the factors that contributed to the change.

  19. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Hand, M.; Mai, T.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in an Union of Concerned Scientists webinar on June 12, 2012.

  20. The Upside of Presentism

    ERIC Educational Resources Information Center

    Fendler, Lynn

    2008-01-01

    Presentism is generally regarded as a necessary evil in historiography. This paper explores the upside of that inevitability. Using a philosophical approach to discourse analysis in the tradition of new cultural history, the paper distinguishes between a strategic use of presentism on the one hand, and a rationalistic approach to history on the…

  1. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Hand, M.

    2012-10-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It is being presented at the Utility Variable-Generation Integration Group Fall Technical Workshop on October 24, 2012.

  2. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Mai, T.

    2012-08-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a Power Systems Engineering Research Center webinar on September 4, 2012.

  3. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Hand, M. M.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a webinar given by the California Energy Commission.

  4. President Reagan Presents Medals

    NASA Technical Reports Server (NTRS)

    1981-01-01

    President Ronald Reagan presents astronaut John Young with the Congressional Space Medal of Honor as well as NASA's Distinguished Service Medal. Astronaut Robert C. Crippen also received the Distinguished Service Medal and Dr. Alan Lovelace was presented with the President's Citizens Medal. From left to right: President Ronald Reagan Astronaut, John Young Astronaut, Robert Crippen Dr. Alan Lovelace Vice President George Bush

  5. Display and Presentation Boards.

    ERIC Educational Resources Information Center

    Midgley, Thomas Keith

    The use of display and presentation boards as tools to help teachers/trainers convey messages more clearly is briefly discussed, and 24 different types of display and presentation boards are described and illustrated; i.e., chalk, paste-up, hook-n-loop, electric, flannel, scroll, communication planning, acetate pocket, slot, pin-tack, preview,…

  6. FBST for Cointegration Problems

    NASA Astrophysics Data System (ADS)

    Diniz, M.; Pereira, C. A. B.; Stern, J. M.

    2008-11-01

    In order to estimate causal relations, the time series econometrics has to be aware of spurious correlation, a problem first mentioned by Yule [21]. To solve the problem, one can work with differenced series or use multivariate models like VAR or VEC models. In this case, the analysed series are going to present a long run relation i.e. a cointegration relation. Even though the Bayesian literature about inference on VAR/VEC models is quite advanced, Bauwens et al. [2] highlight that "the topic of selecting the cointegrating rank has not yet given very useful and convincing results." This paper presents the Full Bayesian Significance Test applied to cointegration rank selection tests in multivariate (VAR/VEC) time series models and shows how to implement it using available in the literature and simulated data sets. A standard non-informative prior is assumed.

  7. 78 FR 70545 - KEI (Maine) Power Management (I) LLC, KEI (Maine) Power Management (II) LLC, KEI (Maine) Power...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-26

    ... located on the North Branch of the Dead River, in Franklin County, Maine; the Marcal Project is located on....gov/docs-filing/ecomment.asp . You must include your name and contact information at the end of...

  8. Unusual Presentation of Multibacillary Nodular Leprosy

    PubMed Central

    Raut, Shweta; Kanade, Swapna; Nataraj, Gita; Mehta, Preeti

    2017-01-01

    Despite India achieving the goal of elimination of leprosy as a public health problem, leprosy is still being transmitted in India. However, due to decreased clinical suspicion of leprosy and atypical case presentations, such cases may be not be diagnosed. We present a case report of an unusual presentation of multibacillary leprosy which presented as nodular lesions. This case report indicates that atypical presentations of leprosy may be missed out by primary care physicians. PMID:28042219

  9. A transitionless lattice for the Fermilab Main Injector

    SciTech Connect

    Ng, K.Y.; Trbojevic, D. ); Lee, S.Y. . Dept. of Physics)

    1991-05-01

    Medium energy (1 to 30 GeV) accelerators are often confronted with transition crossing during acceleration. A lattice without transition is presented, which is a design for the Fermilab Main Injector. The main properties of this lattice are that the {gamma}{sub t} is an imaginary number, the maxima of the dispersion function are small, and two long-straight section with zero dispersion. 7 refs., 5 figs.

  10. Apollo 16 mission. Holes in canopy of main parachute

    NASA Technical Reports Server (NTRS)

    1972-01-01

    The occurrence of an anomaly during the Apollo 16 flight is discussed. The canopy of one of the recovered main parachutes had numerous small burn holes. An analysis of events following main parachute deployment which could cause the anomaly is presented. It is concluded that the burn holes in the parachute were the result of oxidizer being expelled when the plus-yaw engines were fired as the spacecraft was in the final phase of descent.

  11. MAIN-SEQUENCE STARS MASQUERADING AS YOUNG STELLAR OBJECTS IN THE CENTRAL MOLECULAR ZONE

    SciTech Connect

    Koepferl, Christine M.; Robitaille, Thomas P.; Morales, Esteban F. E.; Johnston, Katharine G.

    2015-01-20

    In contrast to most other galaxies, star formation rates in the Milky Way can be estimated directly from young stellar objects (YSOs). In the central molecular zone the star formation rate calculated from the number of YSOs with 24 μm emission is up to an order of magnitude higher than the value estimated from methods based on diffuse emission (such as free-free emission). Whether this effect is real or whether it indicates problems with either or both star formation rate measures is not currently known. In this paper, we investigate whether estimates based on YSOs could be heavily contaminated by more evolved objects such as main-sequence stars. We present radiative transfer models of YSOs and of main-sequence stars in a constant ambient medium which show that the main-sequence objects can indeed mimic YSOs at 24 μm. However, we show that in some cases the main-sequence models can be marginally resolved at 24 μm, whereas the YSO models are always unresolved. Based on the fraction of resolved MIPS 24 μm sources in the sample of YSOs previously used to compute the star formation rate, we estimate the fraction of misclassified ''YSOs'' to be at least 63%, which suggests that the star formation rate previously determined from YSOs is likely to be at least a factor of three too high.

  12. Ten Problems in Experimental Mathematics

    SciTech Connect

    Bailey, David H.; Borwein, Jonathan M.; Kapoor, Vishaal; Weisstein, Eric

    2004-09-30

    This article was stimulated by the recent SIAM ''100 DigitChallenge'' of Nick Trefethen, beautifully described in a recent book. Indeed, these ten numeric challenge problems are also listed in a recent book by two of present authors, where they are followed by the ten symbolic/numeric challenge problems that are discussed in this article. Our intent was to present ten problems that are characteristic of the sorts of problems that commonly arise in ''experimental mathematics''. The challenge in each case is to obtain a high precision numeric evaluation of the quantity, and then, if possible, to obtain a symbolic answer, ideally one with proof. Our goal in this article is to provide solutions to these ten problems, and in the process present a concise account of how one combines symbolic and numeric computation, which may be termed ''hybrid computation'', in the process of mathematical discovery.

  13. Problems with corneal arcus.

    PubMed

    Fielder, A R; Winder, A F; Sheraidah, G A; Cooke, E D

    1981-01-01

    Corneal arcus presents many puzzling features. The correlation between its incidence and serum lipid levels is poor and, using immunoelectrophoresis, we have only been able to identify low-density lipoprotein inconsistently in corneae containing this deposition. Infrared thermography has shown us that arcus commences in the warmest regions of the cornea. We have considered the possible relevance of our biochemical and thermographic findings to other problems with corneal arcus such as its irreversibility, anatomical distribution, and clear zone.

  14. Dynamic bin packing problem

    NASA Technical Reports Server (NTRS)

    Dikshit, Piyush; Guimaraes, Katia; Ramamurthy, Maya; Agrawala, Ashok K.; Larsen, Ronald L.

    1989-01-01

    In a previous work we have defined a general architecture model for autonomous systems, which can be mapped easily to describe the functions of any automated system (SDAG-86-01). In this note, we use the model to describe the problem of thermal management in space stations. First we briefly review the architecture, then we present the environment of our application, and finally we detail the specific function for each functional block of the architecture for that environment.

  15. Energy - A systems problem

    NASA Technical Reports Server (NTRS)

    Bourke, Roger D.

    1982-01-01

    Energy management in its most comprehensive sense encompasses economic, technical, environmental, and political problems. The present evaluation of prospects notes that opportunities for energy conservation are widespread, in such fields as building air conditioning, transportation, electrical appliances, and industrial processes. Further conservation is expected to be achieved through a combination of technology development and economics; the latter factor must not be unduly influenced by political measures that shield consumers from the true cost of energy.

  16. EEG activity during the performance of complex mental problems.

    PubMed

    Jausovec, N; Jausovec, K

    2000-04-01

    This study investigated differences in cognitive processes related to problem complexity. It was assumed that these differences would be reflected in respondents' EEG activity--spectral power and coherence. A second issue of the study was to compare differences between the lower (alpha(1) = 7.9-10.0 Hz), and upper alpha band (alpha(2) = 10.1-12.9 Hz). In the first experiment two well-defined problems with two levels of complexity were used. Only minor differences in EEG power and coherence measures related to problem complexity were observed. In the second experiment divergent production problems resembling tasks on creativity tests were compared with dialectic problems calling for creative solutions. Differences in EEG power measures were mainly related to the form of problem presentation (figural/verbal). In contrast, coherence was related to the level of creativity needed to solve a problem. Noticeable increased intra- and interhemispheric cooperation between mainly the far distant brain regions was observed in the EEG activity of respondents while solving the dialectic problems. These results are explained by the more intense involvement of the long cortico-cortical fiber system in creative thinking. Differences between the lower and upper alpha band were significant for the power and coherence measures. In Experiment 2, fewer differences were observed in power measures in the upper alpha band than in the lower alpha band. A reverse pattern was observed for the coherence measures. These results hint to a functional independence of the two alpha bands, however, they do not allow to draw firm conclusions about their functional meanings. The study showed that it is unlikely that individuals solve well- and ill-defined problems by employing similar cognitive strategies.

  17. The Henry Problem Revisited

    NASA Astrophysics Data System (ADS)

    Karasaki, K.; Oldenburg, C. M.; Maekawa, K.

    2006-12-01

    We have modeled laboratory experiments of saltwater intrusion in a configuration resembling the so-called Henry Problem using TOUGH2/EOS7. The experiment differs from the Henry Problem in that the freshwater boundary condition is that of Dirichlet, a difference that is not expected to affect the overall results very much. The simulation matched the saltwater wedge profile of the experiment, the main feature of which was the sharp interface (lack of dispersion) between the freshwater and saltwater. Prior solutions of the Henry Problem show a wide transition zone between freshwater and saltwater arising from the use of a large dispersion coefficient. Henry attributed the large dispersion to the effect of tidally induced motion. In our simulation, we imposed a time-varying sinusoidal boundary condition to see if a larger transition zone can be created without using a larger dispersion coefficient. However, for the parameters used we were not able to do so. It is still plausible that the wide transition zone observed at Biscayne Bay (and as modeled in the Henry Problem) is caused by a particular formation heterogeneity and transient effects. Our analysis, based on a laboratory experiment and accompanying modeling, suggests that dispersion is quite limited. Nonetheless, we question the validity of the use of a large dispersion coefficient where the groundwater velocity is very low, or where the flow is in the opposite direction of the concentration gradient. This work was supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231

  18. 78 FR 42556 - Maine Yankee Atomic Power Company; Maine Yankee Atomic Power Plant Issuance of Environmental...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-16

    ... COMMISSION Maine Yankee Atomic Power Company; Maine Yankee Atomic Power Plant Issuance of Environmental..., 2011, with various implementation dates for each of the rule changes. Maine Yankee Atomic Power Company (MYAPC) is holder of Facility Operating License DPR-36 for the Maine Yankee Atomic Power Plant (MY)....

  19. Solar Data Hub (Presentation)

    SciTech Connect

    Orwig, K.

    2011-04-01

    As power grid integration of renewables becomes ever more important and detailed, the need for a centralized place for solar-related resource data is needed. This presentation describes such a place and website.

  20. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Hand, M. M.

    2012-09-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  1. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Mai, T.

    2012-11-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  2. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Mai, T.

    2012-10-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  3. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Mai, T.

    2013-04-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  4. Biomass Program Overview Presentation

    SciTech Connect

    2011-12-01

    This presentation is an interactive walk through of the Program's vision of advancing the biofuels and bioproducts industry and highlights the research and development activities that will help achieve it.

  5. The Problems of Human Environment.

    ERIC Educational Resources Information Center

    United Nations, New York, NY.

    Presented is a summary of considerations Specialized Agencies within the United Nations have given to the problems of the human environment. Uppermost are the problems of pollution--air, water, noise, marine, radiation, food, pesticide--as well as those of economic and social concern, environmental health, and misuse of the environment. Agencies…

  6. Addressing problems in complete dentures.

    PubMed

    LaBarre, Eugene; Giusti, Lola; Pitigoi-Aron, Gabriela

    2007-10-01

    The authors have compiled a set of solutions to the most common issues influencing the success of complete denture cases. A brief review and discussion of occlusal vertical dimension is presented, followed by a troubleshooting guide to problems such as inadequate retention and stability, discomfort, and other problems affecting treatment outcome.

  7. Blade Testing Trends (Presentation)

    SciTech Connect

    Desmond, M.

    2014-08-01

    As an invited guest speaker, Michael Desmond presented on NREL's NWTC structural testing methods and capabilities at the 2014 Sandia Blade Workshop held on August 26-28, 2014 in Albuquerque, NM. Although dynamometer and field testing capabilities were mentioned, the presentation focused primarily on wind turbine blade testing, including descriptions and capabilities for accredited certification testing, historical methodology and technology deployment, and current research and development activities.

  8. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Hand, M. M.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented to the 2012 Western Conference of Public Service Commissioners, during their June, 2012, meeting. The Western Conference of Public Service Commissioners is a regional association within the National Association of Regulatory Utility Commissioners (NARUC).

  9. Stellar Presentations (Abstract)

    NASA Astrophysics Data System (ADS)

    Young, D.

    2015-12-01

    (Abstract only) The AAVSO is in the process of expanding its education, outreach and speakers bureau program. powerpoint presentations prepared for specific target audiences such as AAVSO members, educators, students, the general public, and Science Olympiad teams, coaches, event supervisors, and state directors will be available online for members to use. The presentations range from specific and general content relating to stellar evolution and variable stars to specific activities for a workshop environment. A presentation—even with a general topic—that works for high school students will not work for educators, Science Olympiad teams, or the general public. Each audience is unique and requires a different approach. The current environment necessitates presentations that are captivating for a younger generation that is embedded in a highly visual and sound-bite world of social media, twitter and U-Tube, and mobile devices. For educators, presentations and workshops for themselves and their students must support the Next Generation Science Standards (NGSS), the Common Core Content Standards, and the Science Technology, Engineering and Mathematics (STEM) initiative. Current best practices for developing relevant and engaging powerpoint presentations to deliver information to a variety of targeted audiences will be presented along with several examples.

  10. NASA Now: Geology: Curiosity -- Main Science Goals

    NASA Video Gallery

    Dr. Ashwin Vasavada, deputy project scientist for the Mars Science Laboratory, discusses the main science goals for Curiosity, including the investigation of the presence of water and evidence of l...

  11. Space Shuttle Main Engine Test Firing

    NASA Technical Reports Server (NTRS)

    1988-01-01

    A cloud of extremely hot steam boils out of the flame deflector at the A-1 test stand during a test firing of a Space Shuttle Main Engine (SSME) at the John C. Stennis Space Center, Hancock County, Mississippi.

  12. Substructure Main Bridge, Piers B & C Huey ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Substructure - Main Bridge, Piers B & C - Huey P. Long Bridge, Spanning Mississippi River approximately midway between nine & twelve mile points upstream from & west of New Orleans, Jefferson, Jefferson Parish, LA

  13. Topology of Saturn's main magnetic field

    NASA Astrophysics Data System (ADS)

    Acuna, M. H.; Connerney, J. E. P.; Ness, N. F.

    1981-08-01

    The reported analysis of Saturn's main magnetic field takes into account the data obtained by Voyager 1 during its close flyby of Saturn in November 1980. A magnetic field model for the analysis of Saturn's main field in which the distributed ring currents are explicitly modelled is constructed. The considered internal field parameters constitute a first approximation to Saturn's main field. Several model current systems that might be expected on physical grounds to be active in Saturn's magnetosphere are considered. It is pointed out that certain aspects of Saturn's main magnetic field relevant to the planet's interior have been discussed by Stevenson (1980). In particular, the unexpectedly small dipole moment seems to be consistent with the gravitational settling of helium, which leads to a much smaller electrically conducting and convecting region than would be expected of a homogeneous distribution of hydrogen and helium.

  14. Turning Main Street into a Green Street

    EPA Pesticide Factsheets

    With EPA assistance, a small community near Pittsburgh is turning its main street into a green street to control stormwater runoff that has caused flooding, sewer backups and combined sewer overflows.

  15. Preventing Diabetes Problems

    MedlinePlus

    ... Other Dental Problems Diabetes & Sexual & Urologic Problems Preventing Diabetes Problems View or Print All Sections Heart Disease & ... prevent or delay sexual and urologic problems. Depression & Diabetes Depression is common among people with a chronic, ...

  16. Problem: Heart Valve Stenosis

    MedlinePlus

    ... valve . Learn about the different types of stenosis: Aortic stenosis Tricuspid stenosis Pulmonary stenosis Mitral stenosis Outlook for ... Disease "Innocent" Heart Murmur Problem: Valve Stenosis - Problem: Aortic Valve Stenosis - Problem: Mitral Valve Stenosis - Problem: Tricuspid Valve Stenosis - ...

  17. Geomagnetic main field modeling using magnetohydrodynamic constraints

    NASA Technical Reports Server (NTRS)

    Estes, R. H.

    1985-01-01

    The influence of physical constraints are investigated which may be approximately satisfied by the Earth's liquid core on models of the geomagnetic main field and its secular variation. A previous report describes the methodology used to incorporate nonlinear equations of constraint into the main field model. The application of that methodology to the GSFC 12/83 field model to test the frozen-flux hypothesis and the usefulness of incorporating magnetohydrodynamic constraints for obtaining improved geomagnetic field models is described.

  18. Managing soil remediation problems.

    PubMed

    Okx, J P; Hordijk, L; Stein, A

    1996-12-01

    Soil remediation has only a short history but the problem addressed is a significant one. Cost estimates for the clean-up of contaminated sites in the European Union and the United States are in the order of magnitude of 1,400 billion ECU. Such an enormous operation deserves the best management it can get. Reliable cost estimations per contaminated site are an important prerequisite. This paper addresses the problems related to site-wise estimations.When solving soil remediation problems, we have to deal with a large number of scientific disciplines. Too often solutions are presented from the viewpoint of only one discipline. In order to benefit from the combined disciplinary knowledge and experience, we think that it is necessary to describe the interrelations between these disciplines. This can be realized by developing an adequate model of the desired process which enables to consider and evaluate the essential factors as interdependent components of the total system.The resulting model provides a binding paradigm to the contributing disciplines which will result in improved efficiency and effectivity of the decision and the cost estimation process. In the near future, we will release the "Biosparging and Bioventing Expert Support System", an expert support system for problem owners, consultants and authorities dealing with the design and operation of a biosparging and/or a bioventing system.

  19. Aqueous alteration on main-belt asteroids

    NASA Astrophysics Data System (ADS)

    Fornasier, S.; Lantz, C.; Barucci, M.; Lazzarin, M.

    2014-07-01

    The study of aqueous alteration is particularly important for unraveling the processes occurring during the earliest times in Solar System history, as it can give information both on the thermal processes and on the localization of water sources in the asteroid belt, and for the associated astrobiological implications. The aqueous alteration process produces the low temperature (< 320 K) chemical alteration of materials by liquid water which acts as a solvent and produces materials like phyllosilicates, sulphates, oxides, carbonates, and hydroxides. This means that liquid water was present in the primordial asteroids, produced by the melting of water ice by heating sources, very probably by ^{26}Al decay. Hydrated minerals have been found mainly on Mars surface, on primitive main-belt asteroids (C, G, B, F, and P-type, following the classification scheme by Tholen, 1984) and possibly also on few transneptunian objects. Reflectance spectroscopy of aqueous altered asteroids shows absorption features in the 0.6-0.9 and 2.5-3.5-micron regions, which are diagnostic of, or associated with, hydrated minerals. In this work, we investigate the aqueous alteration process on a large sample of 600 visible spectra of C-complex asteroids available in the literature. We analyzed all these spectra in a similar way to characterize the absorption-band parameters (band center, depth, and width) and spectral slope, and to look for possible correlations between the aqueous alteration process and the asteroids taxonomic classes, orbital elements, heliocentric distances, albedo, and sizes. We find that 4.6 % of P, 7.7 % of F, 9.8 % of B, 50.5 % of C, and 100 % of the G-type asteroids have absorption bands in the visible region due to hydrated silicates. Our analysis shows that the aqueous alteration sequence starts from the P-type objects, practically unaltered, and increases through the P → F → B → C → G asteroids, these last being widely aqueously altered, strengthening thus

  20. Fibrodysplasia ossificans progressiva in a Maine Coon cat with prominent ossification in dorsal muscle.

    PubMed

    Yabuzoe, Atsushi; Yokoi, Shin-ichi; Sekiguchi, Maiko; Momoi, Yasuyuki; Ide, Kaori; Nishifuji, Koji; Iwasaki, Toshiroh

    2009-12-01

    A one-year and six-month-old female Maine Coon cat presented with skin problems and paravertebral induration with a history of seven months. Survey radiographs and computed tomography revealed prominent calcifications in both sides of cervical, thoracic and lumbar vertebrae and soft tissue in femoral regions, below knee regions and in brachial regions. Histopathological findings from muscle biopsy samples showed connective tissue proliferation around adjacent skeletal muscle, cartilage formation and endochondral ossification. On the basis of these findings, this feline patient was diagnosed with fibrodysplasia ossificans progressiva (FOP). The most prominent signs observed in this FOP case were significant calcifications of dorsal muscle and presentation of cutaneous signs at the early stage.

  1. Analysis of cavitation damage on the Space Shuttle main engine high pressure oxidizer turbopump

    NASA Technical Reports Server (NTRS)

    Stinebring, D. R.

    1985-01-01

    The performance of the Space Shuttle Main Engines (SSME) has met or exceeded specifications. However, the durability for selected components has not met the desired lifetime criteria. Thus, the High-Pressure Oxidizer Turbopump (HPOTP) has experienced cavitation erosion problems in a number of locations in the pump. An investigation was conducted, taking into account an analysis of the cavitation damage, the development of a flow model for the pump, and the recommendation of design changes which would increase the life expectancy of the unit. The present paper is concerned with the cavitation damage analysis. A model is presented which relates the heavy damage on the housing and over the inducer blades to unsteady blade surface cavitation. This cavitation occurs on the inducer blades in the wakes downstream of the pump inlet housing vanes.

  2. The Prisoner Problem--A Generalization.

    ERIC Educational Resources Information Center

    Gannon, Gerald E.; Martelli, Mario U.

    2000-01-01

    Presents a generalization to the classic prisoner problem, which is inherently interesting and has a solution within the reach of most high school mathematics students. Suggests the problem as a way to emphasize to students the final step in a problem-solver's tool kit, considering possible generalizations when a particular problem has been…

  3. Problem-Solving Analysis and Business Writing.

    ERIC Educational Resources Information Center

    Myrsiades, Linda Suny

    Problem solving skills such as patterning facts, locating problems, separating problems and solutions, and presenting effective written products are essential to success in the business community. Facts can be patterned using a grid relating a problem's effect at the individual, group, situational, and organizational level. Such a grid tests each…

  4. ESO Presentation in Copenhagen

    NASA Astrophysics Data System (ADS)

    Madsen, C.; D'Odorico, S.

    2004-12-01

    On November 8, ESO continued its series of presentations in memberstates with an event in Copenhagen. So far events have been organised in Belgium, Finland, Portugal, Sweden, Switzerland and the United Kingdom. The purpose of these presentations is to raise the awareness of ESO amongst decision-makers, academia and the media. Over time, the scope and specific focus of the national events have varied, considering the particular circumstances and the wishes of the national hosts, and accordingly, the presentation in Denmark was primarily oriented towards industry. The meeting was initiated by the Royal Danish Consulate General in Munich in conjunction with the Confederation of Danish Industries and the Ministry for Science, Technology and Innovation. Leading up to the meeting, several articles about ESO had appeared in the Danish press and the 2nd TV Channel featured a report on the ESO projects also in connection with the event.

  5. Spectral methods for discontinuous problems

    NASA Technical Reports Server (NTRS)

    Abarbanel, S.; Gottlieb, D.; Tadmor, E.

    1985-01-01

    Spectral methods yield high-order accuracy even when applied to problems with discontinuities, though not in the sense of pointwise accuracy. Two different procedures are presented which recover pointwise accurate approximations from the spectral calculations.

  6. Mathematical and computational modeling of the diffraction problems by discrete singularities method

    SciTech Connect

    Nesvit, K. V.

    2014-11-12

    The main objective of this study is reduced the boundary-value problems of scattering and diffraction waves on plane-parallel structures to the singular or hypersingular integral equations. For these cases we use a method of the parametric representations of the integral and pseudo-differential operators. Numerical results of the model scattering problems on periodic and boundary gratings and also on the gratings above a flat screen reflector are presented in this paper.

  7. [Atypical presentation of preeclampsia].

    PubMed

    Ditisheim, A; Boulvain, M; Irion, O; Pechère-Bertschi, A

    2015-09-09

    Preeclampsia is a pregnancy-related syndrome, which still represents one of the major causes of maternal-fetal mortality and morbidity. Diagnosis can be made difficult due to the complexity of the disorder and its wide spectrum of clinical manifestations. In order to provide an efficient diagnostic tool to the clinician, medical societies regularly rethink the definition criteria. However, there are still clinical presentations of preeclampsia that escape the frame of the definition. The present review will address atypical forms of preeclampsia, such as preeclampsia without proteinuria, normotensive preeclampsia, preeclampsia before 20 weeks of gestation and post-partum preeclampsia.

  8. Effective lecture presentation skills.

    PubMed

    Gelula, M H

    1997-02-01

    Lectures are the most popular form of teaching in medical education. As much as preparation and organization are key to the lecture's success, the actual presentation also depends upon the presenter's ability to reach the audience. Teaching is a lively activity. It calls for more than just offering ideas and data to an audience. It calls for direct contact with the audience, effective use of language, capability to use limited time effectively, and the ability to be entertaining. This article offers a structure to effective lecturing by highlighting the importance of voice clarity and speaking speed, approaches to using audiovisual aids, effectively using the audience to the lecture, and ways to be entertaining.

  9. Renewable Electricity Futures (Presentation)

    SciTech Connect

    Mai, T.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at the 2012 RE AMP Annual Meeting. RE-AMP is an active network of 144 nonprofits and foundations across eight Midwestern states working on climate change and energy policy with the goal of reducing global warming pollution economy-wide 80% by 2050.

  10. Renewable Electricity Futures (Presentation)

    SciTech Connect

    DeMeo, E.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at Wind Powering America States Summit. The Summit, which follows the American Wind Energy Association's (AWEA's) annual WINDPOWER Conference and Exhibition, provides state Wind Working Groups, state energy officials, U.S. Energy Department and national laboratory representatives, and professional and institutional partners an opportunity to review successes, opportunities, and challenges for wind energy and plan future collaboration.

  11. [Metachromatic Leukodystrophy. Case Presentation].

    PubMed

    Espejo, Lina María; de la Espriella, Ricardo; Hernández, José Fernando

    Metachromatic leukodystrophy (MLD) is a rare demyelinating disease (prevalence 1:40 000), also called arylsulfatase A deficiency (ARS-A), which may present with neurological and psychiatric symptoms. Clinical assessment may be difficult, due to unspecific signs and symptoms. A case is presented of a 16 year-old female patient seen in psychiatry due to behavioural changes, psychosis, and with impaired overall performance. She was initially diagnosed with schizophrenia, but the Nuclear Magnetic Resonance (NMR) scan and laboratory tests lead to the diagnosis of MLD.

  12. Plenary presentations - opening remarks

    SciTech Connect

    Simon, R.M.

    1993-12-31

    I am pleased to be here today as one of the U.S. Co-Chairs for the Second U.S./Japan Workshop on Global Change. This series of workshops is an outgrowth of the 1988 bilateral agreement between the U.S. and Japanese governments on scientific and technological cooperation. That agreement called for comparable access to, and exchange of, information in scientific and technological fields, as well as the joint undertaking of cooperative activities for peaceful purposes in nationally important areas of science and technology. Meetings such as this were envisioned under the agreement to allow experts from both sides to discuss and exchange information on scientific and technological aspects of important problems and to identify research and development projects that might usefully be undertaken on a cooperative basis. The first U.S./Japan Workshop on Global Change focused on research needed to better understand how the global climate system operates, what the interactions are between the climate system and marine and terrestrial ecosystems, and how Earth systems might respond to global climatic changes.

  13. MOVES Workshops and Presentations

    EPA Pesticide Factsheets

    The U.S. EPA held a three-day workshop including EPA presentations on MOVES 2010 algorithms and default data, information on ways to use MOVES more efficiently for various purposes, and discussion of ideas and plans for MOVES future development.

  14. Managing Presentation Anxiety

    ERIC Educational Resources Information Center

    Hartman, Jackie L.; LeMay, Elaine

    2004-01-01

    All business communication professors struggle with anxiety-ridden students when discussing public speaking. To alleviate students' fears of speaking in public a process was designed to allow business communication students to acknowledge, address, and annul their presentation fears. A six-year comparative study using qualitative methods and…

  15. Giving effective poster presentations

    SciTech Connect

    Rice, J A

    1998-08-27

    Giving an effective poster presentation can be easy and rewarding with attention to a few proven concepts. Define your audience. Keep the words and graphics clear, concise, and eye-catching. Remember, you have three seconds to attract attention and 30 seconds to get your message across.

  16. Rachael Humberg Exit Presentation

    NASA Technical Reports Server (NTRS)

    Humberg, Rachael

    2008-01-01

    This viewgraph presentation reviews the experiences of a college student during a summer internship. The student involved in many projects, such as Stratospheric Observatory for Infrared Astronomy (SOFIA), Acoustic Equipment Testing, Acoustic Test planing for the X-48B and Ikhana.

  17. Film Presentation Techniques.

    ERIC Educational Resources Information Center

    Monod, Pierre

    1976-01-01

    This article discusses three types of films and their use in the second language classroom. The description film is objective and static, and elicits adjectives and adverbs. This kind of film should be presented three times, each time followed by a different set of learning exercises. The culture film - characterized by descriptions, scenes from…

  18. Interactive Presentation of Content

    ERIC Educational Resources Information Center

    Magdin, Martin; Turcáni, Milan; Vrábel, Marek

    2009-01-01

    In the paper we discus about design of universal environment for solution of creating effective multimedia applications with accent on the implementation of interactive elements with the possibility of using the adaptive systems (AS). We also discuss about possibilities of offline presentation of this interactive multimedia adaptive animations…

  19. Poster Plus Presentations.

    ERIC Educational Resources Information Center

    Journal of Chemical Education, 1983

    1983-01-01

    Forty-five "poster session" papers presented at the Seventh Biennial Conference on Chemical Education (Stillwater, Oklahoma 1982) are highlighted. These papers focused on computers in chemistry and chemical education (emphasizing programs) and on instructional innovations (including courses, teaching methods, testing, experiments, and others). (JN)

  20. Tuberculosis presenting as posttraumatic panophthalmitis

    PubMed Central

    Gupta, Pankaj; Singh, Ramandeep; Gupta, Suruchi; Kumar, Abhiraj; Kakkar, Nandita

    2016-01-01

    Panophthalmitis is one of rare manifestations of tuberculosis described in atypical situations such as children, immune compromised patients, or drug abuse. The present report describes the first case of tubercular panophthalmitis developing after trauma in an otherwise healthy adult patient. A 46-year-old female patient presented with corneal infiltrate and endophthalmitis that developed after an injury to right eye with wooden object. Corneal scrapings and vitreous tap were sterile. The patient did not improve with antibiotics and developed panophthalmitis. On evisceration of the painful blind eye, histopathology showed the presence of granulomatous inflammation and acid-fast bacilli. The patient had no other systemic focus of tubercular infection. The patient was managed with anti-tubercular therapy for 6 months. Atypical presentations of tuberculosis like panophthalmitis pose a difficult problem in diagnosis as well as treatment. Direct inoculation of bacilli during trauma is a rare source of infection. This case report presents unusual development of tubercular panophthalmitis following direct inoculation of bacilli during trauma. Ocular tuberculosis should be considered in differential diagnosis of posttraumatic endophthalmitis and panophthalmitis, especially in endemic regions like India. PMID:27013830

  1. Xenotransfusions, past and present.

    PubMed

    Roux, Françoise A; Saï, Pierre; Deschamps, Jack-Yves

    2007-05-01

    The first blood transfusions in humans were xenotransfusions, carried out by Jean-Baptiste Denis beginning in 1667. Richard Lower, Matthäus Purmann and Georges Mercklin also experimented with the use of animal blood for transfusion until this practice was forbidden in 1670, after the death of one of Denis's patients. In the middle of the 19th century, xenotransfusion was rescued from oblivion by the work of Pierre Cyprien Oré. Franz Gesellius and Oscar Hasse fervently defended xenotransfusion, but Emil Ponfick and Leonard Landois stressed the potentially harmful effects of inter-species transfusion from 1874 onward. Xenotransfusion was abandoned completely following the discovery of blood groups by Karl Landsteiner in 1900. From 2000, because of progress in xenotransplantation and the need of blood supply, xenotransfusion is again being considered. Pigs are the best potential donors. The development of alpha-1,3-galactosyltransferase gene-knockout pigs has overcome the first hurdle to xenotransfusion. The main obstacle to porcine red blood cell transfusion is now the cellular response involving macrophages or natural killer cells.

  2. Ear problems in swimmers.

    PubMed

    Wang, Mao-Che; Liu, Chia-Yu; Shiao, An-Suey; Wang, Tyrone

    2005-08-01

    Acute diffuse otitis externa (swimmer's ear), otomycosis, exostoses, traumatic eardrum perforation, middle ear infection, and barotraumas of the inner ear are common problems in swimmers and people engaged in aqua activities. The most common ear problem in swimmers is acute diffuse otitis externa, with Pseudomonas aeruginosa being the most common pathogen. The symptoms are itching, otalgia, otorrhea, and conductive hearing loss. The treatment includes frequent cleansing of the ear canal, pain control, oral or topical medications, acidification of the ear canal, and control of predisposing factors. Swimming in polluted waters and ear-canal cleaning with cotton-tip applicators should be avoided. Exostoses are usually seen in people who swim in cold water and present with symptoms of accumulated debris, otorrhea and conductive hearing loss. The treatment for exostoses is transmeatal surgical removal of the tumors. Traumatic eardrum perforations may occur during water skiing or scuba diving and present with symptoms of hearing loss, otalgia, otorrhea, tinnitus and vertigo. Tympanoplasty might be needed if the perforations do not heal spontaneously. Patients with chronic otitis media with active drainage should avoid swimming, while patients who have undergone mastoidectomy and who have no cavity problems may swim. For children with ventilation tubes, surface swimming is safe in a clean, chlorinated swimming pool. Sudden sensorineural hearing loss and some degree of vertigo may occur after diving because of rupture of the round or oval window membrane.

  3. Main trends in experimental morphological research in angiology and outlook for its development

    NASA Technical Reports Server (NTRS)

    Dzhavakhishvili, N. A.; Melman, Y. P.

    1980-01-01

    The main prospective trends in the problem of collateral circulation and new trends in experimental angiology with respect to the effect of gravitational forces, hypodynamia and hypokinesia on the vascular bed are discussed.

  4. The three-body problem.

    PubMed

    Musielak, Z E; Quarles, B

    2014-06-01

    The three-body problem, which describes three masses interacting through Newtonian gravity without any restrictions imposed on the initial positions and velocities of these masses, has attracted the attention of many scientists for more than 300 years. In this paper, we present a review of the three-body problem in the context of both historical and modern developments. We describe the general and restricted (circular and elliptic) three-body problems, different analytical and numerical methods of finding solutions, methods for performing stability analysis and searching for periodic orbits and resonances. We apply the results to some interesting problems of celestial mechanics. We also provide a brief presentation of the general and restricted relativistic three-body problems, and discuss their astronomical applications.

  5. Mechanics of Composite Materials: Past, Present and Future

    NASA Technical Reports Server (NTRS)

    Chamis, Christos C.

    1984-01-01

    Composite mechanics disciplines are presented and described at their various levels of sophistication and attendant scales of application. Correlation with experimental data is used as the prime discriminator between alternative methods and level of sophistication. Major emphasis is placed on: (1) where composite mechanics has been; (2) what it has accomplished; (3) where it is headed, based on present research activities; and (4) at the risk of being presumptuous, where it should be headed. The discussion is developed using selected, but typical examples of each composite mechanics discipline identifying degree of success, with respect to correlation with experimental data, and problems remaining. The discussion is centered about fiber/resin composites drawn mainly from the author's research activities/experience spanning two decades at Lewis.

  6. A population of comets in the main asteroid belt.

    PubMed

    Hsieh, Henry H; Jewitt, David

    2006-04-28

    Comets are icy bodies that sublimate and become active when close to the Sun. They are believed to originate in two cold reservoirs beyond the orbit of Neptune: the Kuiper Belt (equilibrium temperatures of approximately 40 kelvin) and the Oort Cloud (approximately 10 kelvin). We present optical data showing the existence of a population of comets originating in a third reservoir: the main asteroid belt. The main-belt comets are unlike the Kuiper Belt and Oort Cloud comets in that they likely formed where they currently reside and may be collisionally activated. The existence of the main-belt comets lends new support to the idea that main-belt objects could be a major source of terrestrial water.

  7. Microwave Observations on Saturn's Main Rings

    NASA Astrophysics Data System (ADS)

    Zhang, Zhimeng; Hayes, Alexander; Janssen, Michael A.; Nicholson, Philip D.; Cuzzi, Jeffrey N.; de Pater, Imke; Dunn, David; Hedman, Matthew M.; Estrada, Paul R.

    2016-10-01

    Despite considerable study, Saturn's rings continue to challenge current theories for their provenance. Water ice comprises the bulk of Saturn's rings, yet it is the small fraction of non-icy material that is arguably more valuable in revealing clues about the system's origin and age. Herein, we present new measurements of the non-icy material fraction in Saturn's main rings, determined from microwave observations obtained by Cassini Radar and EVLA.Our Cassini Radar observations in the C Ring show an exceptionally high brightness at near-zero azimuthal angles, suggesting a high porosity of 70%-75% for the particles. Furthermore, most regions in the C ring contain about 1-2% silicates while with an enhanced abundance concentrated in the middle C ring reaching a maximum of 6%-11%. We proposed that the C ring has been continuously polluted by meteoroid bombardment for 15-90Myr, while the middle C ring was further contaminated by an incoming Centaur disrupted by Saturn tidal force. Owing to the B ring's high opacity, the particles there are likely to have 85% - 90% porosity, with corresponding non-icy material fractions of ~ 0.3% - 0.5% in the inner and outer B ring, and ~0.1% - 0.2% in the middle regions. For the A ring interior to the Encke gap, the derived non-icy material is ~0.2% - 0.3% everywhere for porosities ranging from 55% - 90%. Finally, our results for the Cassini Division indicate a non-icy material fraction of ~1% - 2% similar to most regions in the C ring, except that the Cassini Division particles are more likely to contain ~ 90% porosity due to the high opacity there. Our results here further support the idea that Saturn's rings may be less than 150 Myr old suggesting an origin scenario in which the rings are derived from the relatively recent breakup of an icy moon.Furthermore, we calibrated and analyzed multi-wavelengths EVLA observation at wavelengths ranging from 0.7cm to 13cm. As the array operates in a wavelength regime where the absorption

  8. The Holstein polaron problem revisited

    NASA Astrophysics Data System (ADS)

    Tayebi, Amin; Zelevinsky, Vladimir

    2016-06-01

    The Holstein Hamiltonian was proposed half a century ago; since then, decades of research have come up empty handed in the pursuit of a closed-form solution. An exact solution to the two-site Holstein model is presented in this paper. The obtained results provide a clear image of the Hamiltonian structure and allow for the investigation of the symmetry, energy level crossings and polaronic characteristics of the system. The main mathematical tool is a three-term recurrence relation between the wave function amplitudes, which was obtained using the properties of a family of orthogonal functions, namely the Poisson-Charlier polynomials. It is shown that, with the appropriate choice of basis, the eigenfunctions of the problem naturally fall into two families (parities) associated with the discrete {{{Z}}}2 symmetry of the Hamiltonian. The asymptotic solution to the recurrence relation is found by using the Birkhoff expansion. The asymptotic sets the truncation criterion for the wave function, which ensures the accurate calculation of the energy levels for any strength of electron-phonon interaction. The level crossing of states with different parities is discussed and the exact points of broken symmetry are found analytically. The results are used as the building blocks for studying a four-site system. The inherited symmetries lead to the formation of a sparse matrix that is convenient for numerical calculations.

  9. The insecticide-resistance problem

    PubMed Central

    Brown, A. W. A.

    1958-01-01

    The author reviews the growth of the insecticide-resistance problem throughout the world during the period between July 1956 and November 1957, and the developments in research on the subject during the same period. Three new resistant species have been discovered—Anopheles subpictus, Chrysomyia putoria and Rhipicephalus sanguineus—and eight new types of resistance in already resistant species have been observed. Moreover, the geographical area covered by certain resistant insect populations has considerably increased. The research accomplishments during the period under review include: systems of detecting resistance in the field by standard test methods; confirmation of two distinct types of resistance to chlorinated-hydrocarbon insecticides in mosquitos and bed-bugs as well as in houseflies; evidence that DDT-resistance in the housefly, Anopheles sundaicus and Aëdes aegypti is due mainly to a single genetic factor associated with the ability to dehydrochlorinate DDT, and that dieldrin-resistance of Anopheles gambiae also derives from a single factor present even in untouched populations; a fuller understanding of the physiological mechanism of BHC-resistance in the housefly; and demonstration that selection pressure from organo-phosphorus compounds induces resistance to themselves and to chlorinated-hydrocarbon insecticides. PMID:13536795

  10. Main transformation tools in ANALITIK-93 programming system

    SciTech Connect

    Gorovoi, V.D.; Klimenko, V.P.; Fishman, Yu.S.

    1995-09-01

    This article reviews the main functions incorporated in the latest version of the source language for the ANALITIK programming system. These functions are intended as transformation tools for nonnumerical models and problems, which are usually represented by systems of symbolic expressions of arbitrary length with a hierarchical structure. Such problems are often connected with nonlinear dependences and oscillating functions, which require multiple integration and differentiation, opening of parentheses, reduction of simmilar terms, various simplifications, etc. Such transformations are available in the languages of the ANALITIK family, REDUCE, Formac, Lisp, MACSYMA, Mathematica, and others. Languages of the ANALITIK family, and especially ANALITIK-93, are distinguished by greater generality and a higher level of intelligence, which is determined by an advanced automatic recognition system of functional properties of the objects being transformed and by a developed interactive system.

  11. Sirenomelia: a rare presentation.

    PubMed

    Reddy, K Ramesh; Srinivas, S; Kumar, Shiva; Reddy, Surweshwar; Prasad, Hari; Irfan, G M

    2012-01-01

    We are presenting two cases of Sirenomelia (Mermaid Syndrome), which is an extreme example of the caudal regression syndrome. It invariably presents with lower limb fusion, sacral and pelvic bony anomalies, absent external genitalia, imperforate anus, and renal agenesis or dysgenesis. There are approximately 300 cases reported in the literature, 15% of which are associated with twinning, most often monozygotic. The syndrome of caudal regression is thought to be the result of injury to the caudal mesoderm early in gestation. One of our cases survived for 12 days after birth. This new born had an unusually high anorectal anomaly in which the colon was ending at the level of mid transverse colon, fused lower limbs and genital anomalies. Ultrasound of the abdomen revealed horseshoe kidney. Colostomy was performed on day 2 of life. The second case encountered was a stillborn baby on whom an autopsy was performed.

  12. Ground Vehicle Robotics Presentation

    DTIC Science & Technology

    2012-08-14

    Mr. Jim Parker Associate Director Ground Vehicle Robotics Distribution Statement A. Approved for public release Report Documentation Page...Briefing 3. DATES COVERED 01-07-2012 to 01-08-2012 4. TITLE AND SUBTITLE Ground Vehicle Robotics Presentation 5a. CONTRACT NUMBER 5b. GRANT...ABSTRACT Provide Transition-Ready, Cost-Effective, and Innovative Robotics and Control System Solutions for Manned, Optionally-Manned, and Unmanned

  13. Pachygyria Presented as Mania

    PubMed Central

    Chatterjee, Seshadri Sekhar; Talapatra, Devlina; Acharya, Rudra; Sarkhel, Sujit

    2015-01-01

    Psychiatric manifestation of pachygyria, a neuronal migration disorder is rare in literature; rarer if it is bipolar disorder specifically. Here, we report a case of mania and seizure who subsequently diagnosed as pachygyria. Proper literature about pathophysiology is discussed and recently discovered putative genetic role in bipolar disorder explained. This case also emphasis the importance of detailed history taking and imaging investigation even in a pure psychiatric presentation. PMID:26702182

  14. STS-113 Post Flight Presentation

    NASA Technical Reports Server (NTRS)

    2002-01-01

    The STS-113 post-flight presentation begins with a view of Mission Specialists Michael E. Lopez-Alegria and John B. Herrington getting suited for the space mission. The STS-113 crew consists of: Commander James D. Wetherbee, Pilot Paul Lockhart, Mission Specialists Michael Lopez-Alegria and John Herrington. Cosmonauts Valery Korzun, and Sergei Treschev, and astronaut Peggy Whitson who are all members of the expedition five crew, and Commander Kenneth Bowersox, Flight Engineers Nikolai Budarin and Donald Pettit, members of Expedition Six. The main goal of this mission is to take Expedition Six up to the International Space Station and Return Expedition Five to the Earth. The second objective is to install the P(1) Truss segment. Three hours prior to launch, the crew of Expedition Six along with James Wetherbee, Paul Lockhart, Michael Lopez-Alegria and John Herrington are shown walking to an astrovan, which takes them to the launch pad. The actual liftoff is presented. Three Extravehicular Activities (EVA)'s are performed on this mission. Michael Lopez-Alegria and John Herrington are shown performing EVA 1 and EVA 2 which include making connections between the P1 and S(0) Truss segments, and installing fluid jumpers. A panoramic view of the ISS with the Earth in the background is shown. The grand ceremony of the crew exchange is presented. The astronauts performing everyday duties such as brushing teeth, washing hair, sleeping, and eating pistachio nuts are shown. The actual landing of the Space Shuttle is presented.

  15. The Relationship between Impulsivity and Problem Gambling in Adolescence

    PubMed Central

    Secades-Villa, Roberto; Martínez-Loredo, Victor; Grande-Gosende, Aris; Fernández-Hermida, José R.

    2016-01-01

    Gambling has become one of the most frequently reported addictive behaviors among young people. Understanding risk factors associated with the onset or maintenance of gambling problems in adolescence has implications for its prevention and treatment. The main aim of the present study was to examine the potential relationships between impulsivity and problem gambling in adolescence. Participants were 874 high school students (average age: 15 years old) who were surveyed to provide data on gambling and impulsivity. Self-reported gambling behavior was assessed using the South Oaks Gambling Screen – Revised for Adolescents (SOGS-RA) and impulsivity was measured using the Impulsive Sensation Seeking Questionnaire (ZKPQ), the Barratt Impulsiveness Scale (BIS-11-A), and a delay discounting task. The data were analyzed using both a prospective-longitudinal and a cross-sectional design. In the longitudinal analyses, results showed that the impulsivity subscale of the ZKPQ increased the risk of problem gambling (p = 0.003). In the cross-sectional analyses, all the impulsivity measures were higher in at-risk/problem gamblers than in non-problem gamblers (p = 0.04; 0.03; and 0.01, respectively). These findings further support the relationship between impulsivity and gambling in adolescence. Moreover, our findings suggest a bidirectional relationship between impulsivity and problem gambling in adolescence. These results have consequences for the development of prevention and treatment programs for adolescents with gambling problems. PMID:28008322

  16. Sexual Problems among Japanese Women: Data from an Online Helpline

    PubMed Central

    Ozaki, Yumi; Saigo, Rieko; Tai, Toshihiro; Tanaka, Norie; Kobayashi, Hideyuki; Nakajima, Koichi; Takahashi, Yoshimitsu

    2015-01-01

    Abstract Introduction Sexual problems have been more prevalent among East Asian women than those from other areas of the world. However, Japanese women seldom tend to consult their treating physicians as such intimate problems are socially awkward topics to share and may be considered shameful. Presently, there is little data in the literature regarding women's sexual problems in Japan. Aims We aimed (i) to investigate the types of sexual problems that were reported among Japanese women who had sought online consultations; and (ii) to examine whether factors such as age and family structure (marital status and presence of children) increased the likelihood of sexual problems. Methods An online helpline received a total of 316 messages from Japanese women related to sexual problems over a 3‐year period. We evaluated 276 respondents, who provided demographic information such as age and family structure as well as their response to an open‐ended question regarding their sexual problems. Main Outcome Measures Main outcome measures were the types of sexual problems reported by Japanese women. Results The majority of respondents were in their 30s (53.6%). Sexual aversion accounted for 42.4% of the complaints, partners' sexual issues for 18.5%, and pain during sex for 16.7%. Family structure significantly correlated with sexual problems (P < 0.001). Women with sexual aversion were more likely to be younger (P = 0.003) and have children (P < 0.001). Women whose partners had sexual issues were more likely to be married (P < 0.001) and have no children (P < 0.001). Women who reported pain during sex were more likely to have no children (P = 0.006). Conclusion Sexual aversion was the most common sexual problem among Japanese women who sought help via the online helpline. Family structure was related to sexual problems. More detailed assessments of family structure may be important in better identifying the triggering causes of the reported sexual

  17. Perspectives on the Consecutive Pages Problem

    ERIC Educational Resources Information Center

    Srinivasan, V. K.

    2011-01-01

    This article presents different approaches to a problem, dubbed by the author as "the consecutive pages problem". The aim of this teaching-oriented article is to promote the teaching of abstract concepts in mathematics, by selecting a challenging amusement problem and then presenting various solutions in such a way that it can engage the attention…

  18. Main Coast Winds - Final Scientific Report

    SciTech Connect

    Jason Huckaby; Harley Lee

    2006-03-15

    The Maine Coast Wind Project was developed to investigate the cost-effectiveness of small, distributed wind systems on coastal sites in Maine. The restructuring of Maine's electric grid to support net metering allowed for the installation of small wind installations across the state (up to 100kW). The study performed adds insight to the difficulties of developing cost-effective distributed systems in coastal environments. The technical hurdles encountered with the chosen wind turbine, combined with the lower than expected wind speeds, did not provide a cost-effective return to make a distributed wind program economically feasible. While the turbine was accepted within the community, the low availability has been a negative.

  19. Optics Simulations for the NLC Main Linac

    SciTech Connect

    Woodley, Mark D

    2001-06-15

    Focusing in the NLC main linac will be provided mainly by hybrid permanent magnet quadrupoles which have limited variability in strength. When the energy profile of the linac changes, due to normal cycling of rf sources, mismatches in the beam optics can be generated if the quadrupole strengths are not rescaled to the new energy profile. These mismatches can lead to emittance dilution. In addition, betatron phase advance changes caused by the mismatch can adversely affect the beam trajectory, leading to emittance dilution from dispersion and wakefields. This paper describes the results of simulations of these processes, undertaken in an attempt to determine whether or not rescaling of the quadrupoles will be necessary in the NLC main linac.

  20. Giant Antrochoanal Polyp-A Rare Presentation

    PubMed Central

    Siddappa, Shruti Malavalli; Shivakumar, Andanooru Mahalingappa

    2017-01-01

    Antrochoanal polyp (ACP), also called as Killian polyp, is an infrequent, benign lesion of maxillary origin in non-atopic patients. The antrochoanal polyp is shaped according to the anatomical constraints of the lateral nasal wall, particularly the middle meatus and antrum, resembling typically a dumbbell. Here presenting a common problem with unusual presentation.

  1. Contemporary Greek Presentations of Ancient Greek Theatre.

    ERIC Educational Resources Information Center

    Metallinos, Nikos

    Confronted with the problems imposed by the stage presentation and interpretation of ancient Greek theatre to contemporary audiences, scholars have developed four major approaches to the presentation of Greek drama over the past 70 years. The first approach, referred to as modificationist or realist, claims that communicating ancient Greek drama…

  2. Civil law problems and morbidity

    PubMed Central

    Pleasence, P; Balmer, N; Buck, A; O'Grady, A; Genn, H

    2004-01-01

    Study objective: In the United Kingdom, recognition of the links between social and health problems has led to government initiatives such as health action zones. The principles of civil law apply to many types of social problem, and the civil justice system provides one means through which they can be tackled. However, little research has been undertaken into the particular links between problems to which civil legal principles and processes can be applied and morbidity. This study examines these links, and the role of legal advice and services in preventing ill health. Design: This study examined survey respondents' self reports of longstanding illness/disability and experience of 18 problems to which legal principles can be applied. Setting: A random national survey conducted across England and Wales. Participants: 5611 adults drawn from 3348 residential households. Main results: Significant associations were found between illness/disability and 13 of the problem types. Moreover, experience of greater numbers of problems increased the likelihood of reported illness/disability. In attempting to resolve problems respondents' health also frequently suffered. Conclusions: This study highlights the contribution that public legal education and legal advice can make to the promotion of public health, and the importance of further integration of health and civil justice initiatives through health action zones, community legal service partnerships, etc, to further this end. PMID:15194714

  3. Problems with "n"th-Term Problems

    ERIC Educational Resources Information Center

    Matteson, Shirley M.

    2010-01-01

    An nth-term problem involves a sequence. Students must determine which expression will allow them to calculate the nth position of the sequence. To solve such problems, students are to find "a rule that determines the number of elements in a step from the step number." These types of problems help students develop concepts of functions, variables,…

  4. Class and Home Problems: Optimization Problems

    ERIC Educational Resources Information Center

    Anderson, Brian J.; Hissam, Robin S.; Shaeiwitz, Joseph A.; Turton, Richard

    2011-01-01

    Optimization problems suitable for all levels of chemical engineering students are available. These problems do not require advanced mathematical techniques, since they can be solved using typical software used by students and practitioners. The method used to solve these problems forces students to understand the trends for the different terms…

  5. Circumportal pancreas with retroportal main pancreatic duct.

    PubMed

    Hashimoto, Yasushi; Ross, Andrew S; Traverso, L William

    2009-08-01

    There have been 6 cases of circumportal pancreas reported, and 2 of them had the main pancreatic duct in a retroportal dorsal portion. This extremely uncommon anomaly is asymptomatic and therefore incidentally discovered. For the surgeon, it is important to discover this during pancreatic resection so the pancreatic duct can be closed and fistula is avoided. We describe the third case where a circumportal pancreas had its main pancreatic duct passing under the portal vein. The duct was identified and ligated. A fistula did not occur.

  6. [Risk factors of main cancer sites].

    PubMed

    Uleckiene, Saule; Didziapetriene, Janina; Griciūte, Liudvika Laima; Urbeliene, Janina; Kasiulevicius, Vytautas; Sapoka, Virginijus

    2008-01-01

    Cancer prevention is a system of various measures devoted to avoid this disease. Primary cancer prevention means the identification, avoidance, or destruction of known risk factors. The main risk factors are smoking, diet, alcohol consumption, occupational factors, environmental pollution, electromagnetic radiation, infection, medicines, reproductive hormones, and lack of physical activity. Approximately one-third of cancers can be avoided by implementing various preventive measures. The aim of this article was to acquaint medical students, family doctors with risk factors of main cancer sites (lung, breast, colorectal, and prostate).

  7. Space Shuttle Main Engine Liquid Air Insulation Redesign Lessons Learned

    NASA Technical Reports Server (NTRS)

    Gaddy, Darrell; Carroll, Paul; Head, Kenneth; Fasheh, John; Stuart, Jessica

    2010-01-01

    The Space Shuttle Main Engine Liquid Air Insulation redesign was required to prevent the reoccurance of the STS-111 High Pressure Speed Sensor In-Flight Anomaly. The STS-111 In-Flight Anomaly Failure Investigation Team's initial redesign of the High Pressure Fuel Turbopump Pump End Ball Bearing Liquid Air Insulation failed the certification test by producing Liquid Air. The certification test failure indicated not only the High Pressure Fuel Turbopump Liquid Air Insulation, but all other Space Shuttle Main Engine Liquid Air Insulation. This paper will document the original Space Shuttle Main Engine Liquid Air STS-111 In-Flight Anomaly investigation, the heritage Space Shuttle Main Engine Insulation certification testing faults, the techniques and instrumentation used to accurately test the Liquid Air Insulation systems on the Stennis Space Center SSME test stand, the analysis techniques used to identify the Liquid Air Insulation problem areas and the analytical verification of the redesign before entering certification testing, Trade study down selected to three potential design solutions, the results of the development testing which down selected the final Liquid Air Redesign are also documented within this paper.

  8. Predaceous diving beetles in Maine: Faunal list and keys to subfamilies

    USGS Publications Warehouse

    Boobar, L.R.; Spangler, P.J.; Gibbs, K.E.; Longcore, J.R.; Hopkins, K.M.

    1998-01-01

    Records of predaceous diving beetles (Coleoptera: Dytiscidae) collected in Maine are summarized. These records are augmented by field surveys of beetles in Aroostook Co., Maine during 1993-95. Keys to subfamilies are presented with color plates for selected species. A list of diving beetles that have been collected near Maine (state or province) is presented so that investigators will know what additional species might be expected in Maine. Basic taxonomy is presented to facilitate use of keys.

  9. Nuclear fuels - Present and future

    NASA Astrophysics Data System (ADS)

    Olander, D.

    2009-06-01

    The important developments in nuclear fuels and their problems are reviewed and compared with the status of present light-water reactor fuels. The limitations of LWR fuels are reviewed with respect to important recent concerns, namely provision of outlet coolant temperatures high enough for use in H 2 production, destruction of plutonium to eliminate proliferation concerns, and burning of the minor actinides to reduce the waste repository heat load and long-term radiation hazard. In addition to current oxide-based fuel rod designs, the hydride fuel with liquid-metal thermal bonding of the fuel-cladding gap is covered. Finally, two of the most promising Generation IV reactor concepts, the very high temperature reactor and the sodium fast reactor, and the accompanying reprocessing technologies, aqueous-based UREX+1a and pyrometallurgical, are summarized. In all of the topics covered, the thermodynamics involved in the fuel's behavior under irradiation and in the reprocessing schemes are emphasized.

  10. Exit Presentation -- Maintaining Balance

    NASA Technical Reports Server (NTRS)

    Heap, Erin

    2010-01-01

    This slide presentation reviews the projects which the author engaged in during an internship at Johnson Space Center. Project 1 was involved with Stochastic Resonance (SR). Stochastic resonance is a phenomenon in which the response of a non-linear system to a weak input signal is optimized by the presence of a particular non-zero level of noise. The goal of this project was to develop a countermeasure for sensorimotor disturbances that are experienced after long duration space flight. The second project was a pilot study that was to examine how adaptation to a novel functional task was affected by postural disturbance.

  11. Choriocarcinoma presenting with thyrotoxicosis

    PubMed Central

    Sotello, David; Test, Victor J.; Lado-Abeal, Joaquin

    2016-01-01

    We describe a 26-year-old man with metastatic choriocarcinoma who presented with hyperthyroidism associated with elevated β-human chorionic gonadotropin (B-HCG) and respiratory failure secondary to diffuse lung metastasis. After the first cycle of chemotherapy, the concentration of B-HCG dramatically decreased and the patient became euthyroid, allowing us to discontinue antithyroid medications. The patient's hyperthyroidism was caused by stimulation of the thyroid gland by high B-HCG levels, as shown by the marked improvement of the patient's thyroid function panel after chemotherapy. PMID:26722165

  12. OASIS-CC presentation

    NASA Technical Reports Server (NTRS)

    1992-01-01

    The Operations and Science Instrument Support (OASIS) project is a long-term effort to help produce operations capabilities that can support space science missions of the next century. Portions of the OASIS concept in software have been implemented under the general name OASIS-R/T. OASIS-CC is the OASIS Command and Control, for monitoring and controlling science instruments and spacecraft during test, integration, launch and on-orbit operations. Viewgraphs are presented on the OASIS-CC functionality description, OASIS-CC support, and OASIS-CC as a tool.

  13. Perception of Health Problems Among Competitive Runners

    PubMed Central

    Jelvegård, Sara; Timpka, Toomas; Bargoria, Victor; Gauffin, Håkan; Jacobsson, Jenny

    2016-01-01

    Background: Approximately 2 of every 3 competitive runners sustain at least 1 health problem each season. Most of these problems are nontraumatic injuries with gradual onset. The main known risk indicator for sustaining a new running-related injury episode is a history of a previous injury, suggesting that behavioral habits are part of the causal mechanisms. Purpose: Identification of elements associated with purposeful interpretations of body perceptions and balanced behavioral responses may supply vital information for prevention of health problems in runners. This study set out to explore competitive runners’ cognitive appraisals of perceived symptoms on injury and illness and how these appraisals are transformed into behavior. Study Design: Cross-sectional study; Level of evidence, 3. Methods: The study population consisted of Swedish middle- and long-distance runners from the national top 15 list. Qualitative research methods were used to categorize interview data and perform a thematic analysis. The categories resulting from the analysis were used to construct an explanatory model. Results: Saturation of the thematic classification required that data from 8 male and 6 female runners (age range, 20-36 years) were collected. Symptoms interpreted to be caused by illness or injury with a sudden onset were found to lead to immediate action and changes to training and competition programs (activity pacing). In contrast, perceptions interpreted to be due to injuries with gradual onset led to varied behavioral reactions. These behavioral responses were planned with regard to short-term consequences and were characterized by indifference and neglect of long-term implications, consistent with an overactivity behavioral pattern. The latter pattern was consistent with a psychological adaptation to stimuli that is presented progressively to the athlete. Conclusion: Competitive runners appraise whether a health problem requires immediate withdrawal from training based on

  14. Maine's College Graduates: Where They Go and Why. Finding Maine's Future Workforce (Revisited)

    ERIC Educational Resources Information Center

    Silvernail, David L.; Woodard, Brianne L.

    2006-01-01

    In the knowledge-based economy of today, training and retaining a college educated workforce is crucial to the vitality of Maine. Approximately one-half of Maine's high school graduates who go on to college leave the State to do so. A previous study, "Maine's College Graduates: Where They Go and Why" (2003), looked at the factors that…

  15. Slipped capital femoral epiphysis in 17 Maine Coon cats.

    PubMed

    Borak, Danilo; Wunderlin, Nadja; Brückner, Michael; Schwarz, Günter; Klang, Andrea

    2017-01-01

    Objectives From May 2009 to January 2015, 208 Maine Coon cats presented to the Tierklinik Hollabrunn - a small animal referral and first-opinion centre - and 17 (8.17%) cats were diagnosed with a slipped capital femoral epiphysis (SCFE). Over the same time period, 29 (0.67%) of 4348 cats (all breeds) were diagnosed with SCFE. Methods Clinical and orthopaedic examinations and diagnostic imaging were performed on all affected Maine Coons. Age at first presentation, sex, body weight, body condition score (BCS), unilateral or bilateral manifestation of the disease, activity level and duration of lameness, age at neutering and known family history of disease were recorded. Sixteen of 17 Maine Coons were surgically treated. Surgically removed femoral tissue samples were histologically examined in 13 cases. Results The mean age at first presentation was 21.47 months; male to female ratio was 16:1; mean body weight was 7.5 kg (range 5.3-9.3 kg); and mean BCS was 5.06/9.0. Seven cats were bilaterally affected; the median duration of decreased activity level and lameness was 2 weeks; mean age at neutering was 7.7 months (range 3.0-12.0 months); and four cats were littermates. Fourteen femoral head and neck ostectomies, eight total hip replacements and one primary fixation were performed. All 13 histologically available samples confirmed the diagnosis of SCFE. Conclusions and relevance To date, SCFE has been reported only occasionally in Maine Coon cats. However, the results of this study showed that Maine Coons were approximately 12-fold more likely to develop SCFE than the overall population of cats presenting to the Tierklinik Hollabrunn over the same time period. Male sex, neutering, delayed physeal closure and breed-specific high body weight may play an important role in the pathogenesis of SCFE in Maine Coon cats.

  16. EDITORIAL: Presentation of Manuscripts

    NASA Astrophysics Data System (ADS)

    Hudson, R. P.

    1984-01-01

    We wish to draw the attention of authors to two points concerning the presentation of manuscripts. First, some changes have been made recently in our Instructions to Authors. We have reduced from two to one the number of duplicate copies of the manuscript required, asked for corrected proofs to be returned to the Editor rather than directly to the publishers, clarified that a single set of illustration-photographs will suffice, removed a specific suggestion for a style manual that we had offered for general guidance only, and added an instruction on conventions in spelling and hyphenation. Secondly, authors are required, of course, to present a thorough analysis of their experimental data and to include an estimate of their uncertainty. For this purpose, however, we strongly encourage the authors to follow the recommendations put forward by an international working group [1] to the Comité International des Poids et Mesures (CIPM) and endorsed by that body in its Recommandation 1 (CI-1981). This recommendation has been published by the CIPM [2] and was also summarized recently in this journal [3]. [1] 1981 Metrologia 17 69-74, in particular, see pp 73-74 [2] 1981 ProcA~¨s-Verbaux CIPM 10th Session 49, A1 A12. An English language version is available on application to the Director of the Bureau International des Poids et Mesures. [3] 1982 Metrologia 18 41-44, in particular, see p 44.

  17. Biomarkers present in asphaltenes

    SciTech Connect

    Philp, R.P.

    1985-01-01

    The significance and distribution of biomarkers in sediments, source rocks and crude oils are well documented in the literature. Little attention has been directed towards the biomarkers that are present in the asphaltene fractions of crude oils and source rock extracts. Asphaltene fractions by definition are insoluble in certain solvents and consist of high molecular components which makes them difficult to analyze by techniques commonly used to characterize the soluble extracts. Asphaltenes are ideally suited for analysis by microscale pyrolysis techniques (py) combined with gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). Utilization of the multiple ion detection technique in conjunction with the py-GC-MS analyses permits the distribution of the steranes, triterpanes and other biomarker produced by pyrolysis of the asphaltenes to be easily determined. It is proposed in this paper to discuss the pyrolysis of asphaltene from a variety of source rocks and analysis of the biomarkers, released by the pyrolysis. These biomarkers distributions can be used to obtain information on source and maturity of the organic matter in a similar manner to using the soluble biomarkers. It is proposed to discuss the asphaltene biomarker distributions and also to speculate as to why certain biomarkers are present only in the extracts and asphaltenes and not produced by pyrolysis of the kerogens.

  18. Wind for Schools (Presentation)

    SciTech Connect

    Kelly, M.

    2007-06-01

    Schools are key to achieving the goal of producing 20% of the nation's electricity demand. Most significantly, schools are training the scientists, technicians, businesspeople, decisionmakers, and teachers of the future. What students learn and believe about wind energy will impact the United States' ability to create markets and policy, develop and improve technology, finance and implement projects, and create change in all of our public and private institutions. In the nearer term, school districts have large facility costs, electrical loads, and utility costs. They are always in search of ways to reduce costs or obtain revenue to improve educational programs. Schools value teaching about the science and technology of renewable energy. They are important opinion leaders, particularly in rural communities. And their financial structures are quite different from other institutions (funding, incentives, restrictions, etc.). Learning objectives: The presentation will use case studies, project experience, and discussion with the audience to convey the current status of wind energy applications and education in U.S. schools and understanding of the elements that create a successful school wind energy project. The presentation will provide attendees with a background in the current level of knowledge and generate discussion on several themes.

  19. State of Technology for Renewal of Sewer Force Mains

    EPA Science Inventory

    This paper presents the results of a review of the state of technology for renewal of force mains (EPA, 2010). The review identified several needs, including the need for rational and common design approaches for rehabilitation systems, quality assurance/quality control procedur...

  20. Radiation shielding for the Main Injector collimation system

    SciTech Connect

    Rakhno, Igor; /Fermilab

    2008-05-01

    The results of Monte Carlo radiation shielding studies performed with the MARS15 code for the Main Injector collimation system at Fermilab are presented and discussed. MAD-to-MARS Beam Line Builder is used to generate realistic extended curvilinear geometry models.