Science.gov

Sample records for center options study

  1. Options for Organizing the Tanker Airlift Control Center Flight Dispatch Function: An Exploratory Concept Study

    DTIC Science & Technology

    2000-06-01

    Jeffrey A. Sheppard, Major, USAF AFIT/ GMO /ENS/00E-10 DEPARTMENT OF THE AIR FORCE AIR UNIVERSITY AIR FORCE INSTITUTE OF TECHNOLOGY Wright...Force, Department of Defense, or the U. S. Government. AFIT/ GMO /ENS/00E-10 OPTIONS FOR ORGANIZING THE TANKER AIRLIFT CONTROL CENTER FLIGHT...Program Goal…….……….…61 vi AFIT/ GMO /ENS/00E-10 Abstract The Tanker Airlift Control Center (TACC) is the central execution agency for

  2. A Study on Optimized Management Options for the Wolsong Low- and Intermediate - Level Waste Disposal Center in Korea - 13479

    SciTech Connect

    Park, JooWan; Kim, DongSun; Choi, DongEun

    2013-07-01

    The safe and effective management of radioactive waste is a national task required for sustainable generation of nuclear power and for energy self-reliance in Korea. Currently, for permanent disposal of low- and intermediate-level waste (LILW), the Wolsong LILW Disposal Center (WLDC) is under construction. It will accommodate a total of 800,000 drums at the final stage after stepwise expansion. As an implementing strategy for cost-effective development of the WLDC, various disposal options suitable for waste classification schemes would be considered. It is also needed an optimized management of the WLDC by taking a countermeasure of volume reduction treatment. In this study, various management options to be applied to each waste class are analyzed in terms of its inventory and disposal cost. For the volume reduction and stabilization of waste, the vitrification and plasma melting methods are considered for combustible and incombustible waste, respectively. (authors)

  3. Options Study - Phase II

    SciTech Connect

    R. Wigeland; T. Taiwo; M. Todosow; W. Halsey; J. Gehin

    2010-09-01

    The Options Study has been conducted for the purpose of evaluating the potential of alternative integrated nuclear fuel cycle options to favorably address the issues associated with a continuing or expanding use of nuclear power in the United States. The study produced information that can be used to inform decisions identifying potential directions for research and development on such fuel cycle options. An integrated nuclear fuel cycle option is defined in this study as including all aspects of the entire nuclear fuel cycle, from obtaining natural resources for fuel to the ultimate disposal of used nuclear fuel (UNF) or radioactive wastes. Issues such as nuclear waste management, especially the increasing inventory of used nuclear fuel, the current uncertainty about used fuel disposal, and the risk of nuclear weapons proliferation have contributed to the reluctance to expand the use of nuclear power, even though it is recognized that nuclear power is a safe and reliable method of producing electricity. In this Options Study, current, evolutionary, and revolutionary nuclear energy options were all considered, including the use of uranium and thorium, and both once-through and recycle approaches. Available information has been collected and reviewed in order to evaluate the ability of an option to clearly address the challenges associated with the current implementation and potential expansion of commercial nuclear power in the United States. This Options Study is a comprehensive consideration and review of fuel cycle and technology options, including those for disposal, and is not constrained by any limitations that may be imposed by economics, technical maturity, past policy, or speculated future conditions. This Phase II report is intended to be used in conjunction with the Phase I report, and much information in that report is not repeated here, although some information has been updated to reflect recent developments. The focus in this Options Study was to

  4. Nevada Transportatoion Options Study

    SciTech Connect

    P. GEHNER; E.M. WEAVER; L. FOSSUM

    2006-05-25

    This study performs a cost and schedule analysis of three Nevada Transportation options that support waste receipt at the repository. Based on the U.S. Department of Energy preference for rail transportation in Nevada (given in the Final Environmental Impact Statement), it has been assumed that a branch rail line would be constructed to support waste receipt at the repository. However, due to potential funding constraints, it is uncertain when rail will be available. The three Nevada Transportation options have been developed to meet a varying degree of requirements for transportation and to provide cost variations used in meeting the funding constraints given in the Technical Direction Letter guidelines for this study. The options include combinations of legal-weight truck, heavy-haul truck, and rail. Option 1 uses a branch rail line that would support initial waste receipt at the repository in 2010. Rail transportation would be the primary mode, supplemented by legal weight trucks. This option provides the highest level of confidence in cost and schedule, lowest public visibility, greatest public acceptability, lowest public dose, and is the recommended option for support of waste receipt. The completion of rail by 2010 will require spending approximately $800 million prior to 2010. Option 2 uses a phased rail approach to address a constrained funding scenario. To meet funding constraints, Option 2 uses a phased approach to delay high cost activities (final design and construction) until after initial waste receipt in 2010. By doing this, approximately 95 percent of the cost associated with completion of a branch rail line is deferred until after 2010. To support waste receipt until a branch rail line is constructed in Nevada, additional legal-weight truck shipments and heavy-haul truck shipments (on a limited basis for naval spent nuclear fuel) would be used to meet the same initial waste receipt rates as in Option 1. Use of heavy-haul shipments in the absence

  5. The safeguards options study

    SciTech Connect

    Hakkila, E.A.; Mullen, M.F.; Olinger, C.T.; Stanbro, W.D.; Olsen, A.P.; Roche, C.T.; Rudolph, R.R.; Bieber, A.M.; Lemley, J.; Filby, E.

    1995-04-01

    The Safeguards Options Study was initiated to aid the International Safeguards Division (ISD) of the DOE Office of Arms Control and Nonproliferation in developing its programs in enhanced international safeguards. The goal was to provide a technical basis for the ISD program in this area. The Safeguards Options Study has been a cooperative effort among ten organizations. These are Argonne National Laboratory, Brookhaven National Laboratory, Idaho National Engineering Laboratory, Lawrence Livermore National Laboratory, Los Alamos National Laboratory, Mound Laboratory, Oak Ridge National Laboratory, Pacific Northwest Laboratories, Sandia National Laboratories, and Special Technologies Laboratory. Much of the Motivation for the Safeguards Options Study is the recognition after the Iraq experience that there are deficiencies in the present approach to international safeguards. While under International Atomic Energy Agency (IAEA) safeguards at their declared facilities, Iraq was able to develop a significant weapons program without being noticed. This is because negotiated safeguards only applied at declared sites. Even so, their nuclear weapons program clearly conflicted with Iraq`s obligations under the Nuclear Nonproliferation Treaty (NPT) as a nonnuclear weapon state.

  6. Retrieval options study

    SciTech Connect

    Not Available

    1980-03-01

    This Retrieval Options Study is part of the systems analysis activities of the Office of Nuclear Waste Isolation to develop the scientific and technological bases for radioactive waste repositories in various geologic media. The study considers two waste forms, high level waste and spent fuel, and defines various classes of waste retrieval and recovery. A methodology and data base are developed which allow the relative evaluation of retrieval and recovery costs and the following technical criteria: safety; technical feasibility; ease of retrieval; probable intact retrieval time; safeguards; monitoring; criticality; and licensability. A total of 505 repository options are defined and the cost and technical criteria evaluated utilizing a combination of facts and engineering judgments. The repositories evaluated are selected combinations of the following parameters: Geologic Media (salt, granite, basalt, shale); Retrieval Time after Emplacement (5 and 25 years); Emplacement Design (nominal hole, large hole, carbon steel canister, corrosion resistant canister, backfill in hole, nominal sleeves, thick wall sleeves); Emplacement Configuration (single vertical, multiple vertical, single horizontal, multiple horizontal, vaults; Thermal Considerations; (normal design, reduced density, once-through ventilation, recirculated ventilation); Room Backfill; (none, run-of-mine, early, 5 year delay, 25 year delay, decommissioned); and Rate of Retrieval; (same as emplacement, variably slower depending on repository/canister condition).

  7. Comparison of Head Center Position and Screw Fixation Options Between a Jumbo Cup and an Offset Center of Rotation Cup in Revision Total Hip Arthroplasty: A Computer Simulation Study.

    PubMed

    Faizan, Ahmad; Black, Brandon J; Fay, Brian D; Heffernan, Christopher D; Ries, Michael D

    2016-01-01

    Jumbo acetabular cups are commonly used in revision total hip arthroplasty (THA). A straightforward reaming technique is used which is similar to primary THA. However, jumbo cups may also be associated with hip center elevation, limited screw fixation options, and anterior soft tissue impingement. A partially truncated hemispherical shell was designed with an offset center of rotation, thick superior rim, and beveled anterior and superior rims as an alternative to a conventional jumbo cup. A three dimensional computer simulation was used to assess head center position and safe screw trajectories. Results of this in vitro study indicate that a modified hemispherical implant geometry can reduce head center elevation while permitting favorable screw fixation trajectories into the pelvis in comparison to a conventional jumbo cup.

  8. TOPEX satellite option study

    NASA Technical Reports Server (NTRS)

    1982-01-01

    The basic design of the fleet satellite communication spacecraft (FLTSATCOM) can easily accommodate any of the three payload options for the ocean dynamic topography experiment (TOPEX). The principal mission requirements as well as the payload accommodations and communications systems needed for launching this payload are reviewed. The existing FLTSATCOM satellite design is identified and the approaches for the proposed propulsion system are described in addition to subsystems for mechanical; power; attitude and velocity control; and telemetry, tracking and control are described. The compatability of FLTSATCOM with the launch vehicle is examined and its capabilities vs TOPEX requirements are summarized. Undetermined changes needed to meet data storage, thermal control, and area to mass ratio requirements are discussed. Cost estimates are included for budgetary and planning purposes. The availability of the described design is assessed based on the continuing production of FLTSATCOM spacecraft during the schedule span planned for TOPEX.

  9. AFCI Options Study

    SciTech Connect

    R. Wigeland; T. Taiwo; M. Todosow; W. Halsey; J. Gehin

    2009-09-01

    This report describes the background and framework for both organizing the discussion and providing information on the potential for nuclear energy R&D to develop alternative nuclear fuel cycles that would address the issues with the current implementations of nuclear power, including nuclear waste disposal, proliferation risk, safety, security, economics, and sustainability. The disposition of used fuel is the cause of many of the concerns, and the possible approaches to used fuel management identify a number of basic technology areas that need to be considered. The basic science in each of the technology areas is discussed, emphasizing what science is currently available, where scientific knowledge may be insufficient, and especially to identify specific areas where transformational discoveries may allow achievement of performance goals not currently attainable. These discussions lead to the wide range of technical options that have been the basis for past and current research and development on advanced nuclear fuel cycles in the United States. The results of this work are then briefly reviewed to show the extent to which such approaches are capable of addressing the issues with nuclear power, the potential for moving further, and the inherent limitations.

  10. Design Evolution Study - Aging Options

    SciTech Connect

    P. McDaniel

    2002-04-05

    The purpose of this study is to identify options and issues for aging commercial spent nuclear fuel received for disposal at the Yucca Mountain Mined Geologic Repository. Some early shipments of commercial spent nuclear fuel to the repository may be received with high-heat-output (younger) fuel assemblies that will need to be managed to meet thermal goals for emplacement. The capability to age as much as 40,000 metric tons of heavy metal of commercial spent nuclear he1 would provide more flexibility in the design to manage this younger fuel and to decouple waste receipt and waste emplacement. The following potential aging location options are evaluated: (1) Surface aging at four locations near the North Portal; (2) Subsurface aging in the permanent emplacement drifts; and (3) Subsurface aging in a new subsurface area. The following aging container options are evaluated: (1) Complete Waste Package; (2) Stainless Steel inner liner of the waste package; (3) Dual Purpose Canisters; (4) Multi-Purpose Canisters; and (5) New disposable canister for uncanistered commercial spent nuclear fuel. Each option is compared to a ''Base Case,'' which is the expected normal waste packaging process without aging. A Value Engineering approach is used to score each option against nine technical criteria and rank the options. Open issues with each of the options and suggested future actions are also presented. Costs for aging containers and aging locations are evaluated separately. Capital costs are developed for direct costs and distributable field costs. To the extent practical, unit costs are presented. Indirect costs, operating costs, and total system life cycle costs will be evaluated outside of this study. Three recommendations for aging commercial spent nuclear fuel--subsurface, surface, and combined surface and subsurface are presented for further review in the overall design re-evaluation effort. Options that were evaluated but not recommended are: subsurface aging in a new

  11. A Film Study Option for HSC French

    ERIC Educational Resources Information Center

    Connole, Pat

    1974-01-01

    In 1974, after a trial period of two years, the study of two selected French feature films will be offered as an option to the study of prescribed texts in Higher School Certificate French in Victoria. (Author)

  12. CyberKnife Stereotactic Ablative Radiotherapy as an Option of Treatment for Patients With Prostate Cancer Having Oligometastatic Lymph Nodes: Single-Center Study Outcome Evaluation.

    PubMed

    Napieralska, Aleksandra; Miszczyk, Leszek; Stąpór-Fudzińska, Małgorzata

    2016-10-01

    The aim of this study was to evaluate the effectiveness of CyberKnife-based stereotactic ablative radiotherapy on prostate cancer lymph node metastases. Our material consisted of 18 patients with 31 metastatic lymph nodes irradiated between 2011 and 2014 using CyberKnife-based stereotactic ablative radiotherapy. Patients were irradiated using fraction dose varied from 6 to 15 Gy (median 10), to the total dose of 24 to 45 Gy (median 30). Irradiated lymph node size varied from 0.4 to 4.0 cm. In all, 9 patients had single lymph node metastasis and 9 patients had metastases of 2 to 4 lymph nodes. Prostate-specific antigen concentration before radiotherapy varied from 0.01 to 15.58 (mean 6.97; median 4.66). All patients at the time of radiotherapy and follow-up received androgen deprivation therapy. Mann-Whitney U, Kaplan-Meier method, and log-rank tests were used in statistical analysis. We obtained the following results: after CyberKnife stereotactic ablative radiotherapy, prostate-specific antigen concentration dropped in majority of cases and during the last control varied from 0.00 to 258.00 (median 2.5), and was lower in patients without dissemination to other organs (P = .01). Complete regression was found in 12 lesions, stable disease in 13, and progression in 4. In 7 patients, the dissemination to other organs occurred. Our results allow us to conclude that CyberKnife stereotactic ablative radiotherapy of prostate cancer lymph node oligometastases gives good local control and relatively good prostate-specific antigen response.

  13. Options for Sustaining School-Based Health Centers

    ERIC Educational Resources Information Center

    Swider, Susan M.; Valukas, Amy

    2004-01-01

    Several methods exist for financing and sustaining operations of school-based health centers (SBHCs). Promising sources of funds include private grants, federal grants, and state funding. Recently, federal regulation changes mandated that federal funding specifically for SBHCs go only to SBHCs affiliated with a Federally Qualified Health Center…

  14. Options for organization and operation of space applications transfer centers

    NASA Technical Reports Server (NTRS)

    Robinson, A. C.; Madigan, J. A.

    1976-01-01

    The benefits of developing regional facilities for transfer of NASA developed technology are discussed. These centers are designed to inform, persuade, and serve users. Included will be equipment for applications and demonstrations of the processes, a library, training facilities, and meeting rooms. The staff will include experts in the various techniques, as well as personnel involved in finding and persuading potential users.

  15. NEXT GENERATION MELTER OPTIONEERING STUDY - INTERIM REPORT

    SciTech Connect

    GRAY MF; CALMUS RB; RAMSEY G; LOMAX J; ALLEN H

    2010-10-19

    The next generation melter (NOM) development program includes a down selection process to aid in determining the recommended vitrification technology to implement into the WTP at the first melter change-out which is scheduled for 2025. This optioneering study presents a structured value engineering process to establish and assess evaluation criteria that will be incorporated into the down selection process. This process establishes an evaluation framework that will be used progressively throughout the NGM program, and as such this interim report will be updated on a regular basis. The workshop objectives were achieved. In particular: (1) Consensus was reached with stakeholders and technology providers represented at the workshop regarding the need for a decision making process and the application of the D{sub 2}0 process to NGM option evaluation. (2) A framework was established for applying the decision making process to technology development and evaluation between 2010 and 2013. (3) The criteria for the initial evaluation in 2011 were refined and agreed with stakeholders and technology providers. (4) The technology providers have the guidance required to produce data/information to support the next phase of the evaluation process. In some cases it may be necessary to reflect the data/information requirements and overall approach to the evaluation of technology options against specific criteria within updated Statements of Work for 2010-2011. Access to the WTP engineering data has been identified as being very important for option development and evaluation due to the interface issues for the NGM and surrounding plant. WRPS efforts are ongoing to establish precisely data that is required and how to resolve this Issue. It is intended to apply a similarly structured decision making process to the development and evaluation of LAW NGM options.

  16. Cementitious waste option scoping study report

    SciTech Connect

    Lee, A.E.; Taylor, D.D.

    1998-02-01

    A Settlement Agreement between the Department of Energy (DOE) and the State of Idaho mandates that all high-level radioactive waste (HLW) now stored at the Idaho Chemical Processing Plant (ICPP) on the Idaho National Engineering and Environmental Laboratory (INEEL) will be treated so that it is ready to be moved out of Idaho for disposal by a target date of 2035. This study investigates the nonseparations Cementitious Waste Option (CWO) as a means to achieve this goal. Under this option all liquid sodium-bearing waste (SBW) and existing HLW calcine would be recalcined with sucrose, grouted, canisterized, and interim stored as a mixed-HLW for eventual preparation and shipment off-Site for disposal. The CWO waste would be transported to a Greater Confinement Disposal Facility (GCDF) located in the southwestern desert of the US on the Nevada Test Site (NTS). All transport preparation, shipment, and disposal facility activities are beyond the scope of this study. CWO waste processing, packaging, and interim storage would occur over a 5-year period between 2013 and 2017. Waste transport and disposal would occur during the same time period.

  17. TOPEX satellite concept. TOPEX option study report

    NASA Technical Reports Server (NTRS)

    Meyer, D. P.; Case, C. M.

    1982-01-01

    Candidate bus equipment from the Viking, Applications Explorer Mission, and Small Scientific Satellite programs for application to the TOPEX mission options is assessed. Propulsion module equipment and subsystem candidates from the Applications Explorer Mission satellites and the Small Scientific Satellite spacecraft are evaluated for those TOPEX options. Several subsystem concepts appropriate to the TOPEX options are described. These descriptions consider performance characteristics of the subsystems. Cost and availability information on the candidate equipment and subsystems are also provided.

  18. Preliminary study of possible ORELA replacement options

    SciTech Connect

    Olsen, D.K.; Martin, J.A.; Horen, D.J.

    1984-06-01

    Based on two conceptual design studies performed by the LANL Accelerator Technology Division, the possibilities in terms of accelerator systems for replacing ORELA with a more intense Maxwellian-type continuous-energy neutron source are summarized and discussed. The neutron intensities from ORELA are compared with those from existing or potential accelerator systems used for cross-section and condensed-matter studies. The best replacement options seem to involve a spallation source from 200- to 400-MeV protons on an ORELA-like target. Pulsing and intensity desiderata with such a source are discussed which correspond to a spectrum-averaged 100-fold improved figure of merit over ORELA for TOF measurements with only a tenfold increased source strength. Existing accelerator designs seem to be inadequate for such a source. Consequently, two conceptual designs were developed for this study by the LANL Accelerator Technology Division. The first conceptual design is for a 200-MeV large linac capable of accelerating 1.3 A during a macropulse; this linac standing alone could serve as an ORELA replacement source. The second conceptual design is for a much smaller 250-MeV PIGMI linac with a 28-mA macropulse current which feeds a proton accumulator ring and bunch-compressor transport line. This linac-ring-compressor (LIRIC) option would give a more cost-effective neutron source for cross-section measurements, whereas the large linac, or a modified version of it, would give a much simpler system more suitable for expansion. In particular, both conceptual designs would incorporate the present ORELA building and would provide approximately 100-fold improved neutron sources over ORELA for cross-section measurements. The total estimated cost of the LIRIC system would be $43M (1984), whereas the cost of the large linac would be about a factor of two more. 55 references, 11 figures, 19 tables.

  19. A Study of Three-option and Four-option Multiple Choice Exams.

    ERIC Educational Resources Information Center

    Cooper, Terence H.

    1988-01-01

    Describes a study used to determine differences in exam reliability, difficulty, and student evaluations. Indicates that when a fourth option was added to the three-option items, the exams became more difficult. Includes methods, results discussion, and tables on student characteristics, whole test analyses, and selected items. (RT)

  20. [Public free anonymous HIV testing centers: cost analysis and financing options].

    PubMed

    Dozol, Adrien; Tribout, Martin; Labalette, Céline; Moreau, Anne-Christine; Duteil, Christelle; Bertrand, Dominique; Segouin, Christophe

    2011-01-01

    The services of general interest provided by hospitals, such as free HIV clinics, have been funded since 2005 by a lump sum covering all costs. The allocation of the budget was initially determined based on historical and declarative data. However, the French Ministry of Health (MoH) recently outlined new rules for determining the allocation of financial resources and contracting hospitals for each type of services of general interest provided. The aim of this study was to estimate the annual cost of a public free anonymous HIV-testing center and to assess the budgetary implications of new financing systems. Three financing options were compared: the historic block grant; a mixed system recommended by the MoH associating a lump sum covering the recurring costs of an average center and a variable part based on the type and volume of services provided; and a fee-for-services system. For the purposes of this retrospective study, the costs and activity data of the HIV testing clinic of a public hospital located in the North of Paris were obtained for 2007. The costs were analyzed from the perspective of the hospital. The total cost was estimated at 555,698 euros. Personnel costs accounted for 31% of the total costs, while laboratory expenses accounted for 36% of the total costs. While the estimated deficit was 292,553 euros under the historic system, the financial balance of the clinic was found to be positive under a fee-for-services system. The budget allocated to the HIV clinic under the system recommended by the MoH covers most of the current expenses of the HIV clinic while meeting the requirements of free confidential care.

  1. Lunar Transportation Facilities and Operations Study, option 1

    NASA Technical Reports Server (NTRS)

    1991-01-01

    Throughout the Option I period of the Lunar Transportation Facilities and Operations Study (LTFOS), McDonnell Douglas Space Systems Company - Kennedy Space Center (MDSSC-KSC) provided support to both the Planetary Surface Systems (PSS) Office at the National Aeronautics and Space Administration (NASA) at the Johnson Space Center and to the Flight and Ground Systems Projects Office (Payload Projects Management) at the Kennedy Space Center. The primary objective of the Option I phase of the study was to assist the above NASA centers in developing Space Exploration Initiative (SEI) concepts. MDSSC-KSC conducted three analyses which provided launch and landing detail to the proposed exploration concepts. One analysis, the Lunar Ejecta Assessment, was conducted to determine the effects of launch and landing a vehicle in a dusty environment. A second analysis, the Thermal/Micrometeoroid Protection Trade Study, was refined to determine the impacts that Reference Architecture Option 5A would have on thermal/micrometeoroid protection approaches. The third analysis, the Centaur Prelaunch Procedure Analysis, used a Centaur prelaunch test and checkout flow to identify key considerations that would be important if a Lunar Excursion Vehicle (LEV) was to use an expander cycle liquid oxygen-liquid hydrogen engine. Several 'quick look' assessments were also conducted. One quick look assessment, the Storable Propellant Quick Look Assessment, was conducted to identify design considerations that should be made if storable propellants were to be used instead of liquid oxygen and liquid hydrogen. The LEV Servicer Maintenance Analysis provided an early look at the effort required to maintain an LEV Servicer on the lunar surface. Also, support was provided to the PSS Logistics Manager to develop initial LEV Servicer cost inputs. Consideration was given to the advanced development that must be provided to accomplish a lunar and/or Mars mission. MDSS-KSC also provided support to both MASE

  2. Design Options Study. Volume III. Qualitative Assessment.

    DTIC Science & Technology

    1980-09-01

    commercial commnonality by improving commercial economics and/or military cost effectiveness. This detailed examination of these options is described in...including those listed above, have the greatest potential effects on commercial economics , on military cost- effectiveness, and ultimately, on the...in a military environment as well as the commercial economics was carefully examined. The analysis produced aircraft configurations that are optimum

  3. Comparison between three option, four option and five option multiple choice question tests for quality parameters: A randomized study

    PubMed Central

    Vegada, Bhavisha; Shukla, Apexa; Khilnani, Ajeetkumar; Charan, Jaykaran; Desai, Chetna

    2016-01-01

    Background: Most of the academic teachers use four or five options per item of multiple choice question (MCQ) test as formative and summative assessment. Optimal number of options in MCQ item is a matter of considerable debate among academic teachers of various educational fields. There is a scarcity of the published literature regarding the optimum number of option in each item of MCQ in the field of medical education. Objectives: To compare three options, four options, and five options MCQs test for the quality parameters – reliability, validity, item analysis, distracter analysis, and time analysis. Materials and Methods: Participants were 3rd semester M.B.B.S. students. Students were divided randomly into three groups. Each group was given one set of MCQ test out of three options, four options, and five option randomly. Following the marking of the multiple choice tests, the participants’ option selections were analyzed and comparisons were conducted of the mean marks, mean time, validity, reliability and facility value, discrimination index, point biserial value, distracter analysis of three different option formats. Results: Students score more (P = 0.000) and took less time (P = 0.009) for the completion of three options as compared to four options and five options groups. Facility value was more (P = 0.004) in three options group as compared to four and five options groups. There was no significant difference between three groups for the validity, reliability, and item discrimination. Nonfunctioning distracters were more in the four and five options group as compared to three option group. Conclusion: Assessment based on three option MCQs is can be preferred over four option and five option MCQs. PMID:27721545

  4. Lunar Transportation Facilities and Operations Study, option 2

    NASA Technical Reports Server (NTRS)

    1992-01-01

    During the Option 2 period of the Lunar Transportation Facilities and Operations Study (LTFOS), a joint McDonnell Douglas Space Systems Company Kennedy Space Center (MDSSC-KSC) and National Aeronautics and Space Administration Kennedy Space Center (NASA-KSC) Study team conducted a comparison of the functional testing of the RL-10 and Space Shuttle Main Engine, a quick-look impact assessment of the Synthesis Group Report, and a detailed assessment of the Synthesis Group Report. The results of these KSC LTFOS team efforts are included. The most recent study task effort was a detailed assessment of the Synthesis Group Report. The assessment was conducted to determine the impact on planetary launch and landing facilities and operations. The result of that effort is a report entitled 'Analysis of the Synthesis Group Report, its Architectures and their Impacts on PSS Launch and Landing Operations' and is contained in Appendix A. The report is structured in a briefing format with facing pages as opposed to a narrative style. A quick-look assessment of the Synthesis Group Report was conducted to determine the impact of implementing the recommendations of the Synthesis Group on KSC launch facilities and operations. The data was documented in a presentation format as requested by Kennedy Space Center Technology and Advanced Projects Office and is included in Appendix B. Appendix C is a white paper on the comparison of the functional testing of the RL-10 and Space Shuttle Main Engine. The comparison was undertaken to provide insight regarding common test requirements that would be applicable to Lunar and Mars Excursion Vehicles (LEV and MEV).

  5. PSI-Center Validation Studies

    NASA Astrophysics Data System (ADS)

    Nelson, B. A.; Akcay, C.; Glasser, A. H.; Hansen, C. J.; Jarboe, T. R.; Marklin, G. J.; Milroy, R. D.; Morgan, K. D.; Norgaard, P. C.; Shumlak, U.; Sutherland, D. A.; Victor, B. S.; Sovinec, C. R.; O'Bryan, J. B.; Held, E. D.; Ji, J.-Y.; Lukin, V. S.

    2014-10-01

    The Plasma Science and Innovation Center (PSI-Center - http://www.psicenter.org) supports collaborating validation platform experiments with 3D extended MHD simulations using the NIMROD, HiFi, and PSI-TET codes. Collaborators include the Bellan Plasma Group (Caltech), CTH (Auburn U), HBT-EP (Columbia), HIT-SI (U Wash-UW), LTX (PPPL), MAST (Culham), Pegasus (U Wisc-Madison), SSX (Swarthmore College), TCSU (UW), and ZaP/ZaP-HD (UW). The PSI-Center is exploring application of validation metrics between experimental data and simulations results. Biorthogonal decomposition (BOD) is used to compare experiments with simulations. BOD separates data sets into spatial and temporal structures, giving greater weight to dominant structures. Several BOD metrics are being formulated with the goal of quantitive validation. Results from these simulation and validation studies, as well as an overview of the PSI-Center status will be presented.

  6. Options in Extraterrestrial Sample Handling and Study

    NASA Technical Reports Server (NTRS)

    Papanastassiou, Dimitri A.

    2000-01-01

    This presentation mentions important service functions such as: sample preservation, hazard assessment, and handling. It also discuss how preliminary examination of samples is necessary for sample hazard assessment and for sample allocations. Clean facilities and clean sample handling are required. Conflicts, cross contamination issues will be present and need to be resolved. Extensive experience is available for extraterrestrial samples and must be sought and applied. Extensive experience is available in studies of pathogenicity and must be sought and applied as necessary. Advisory and oversight structures must also be in place

  7. Direct cementitious waste option study report

    SciTech Connect

    Dafoe, R.E.; Losinski, S.J.

    1998-02-01

    A settlement agreement between the Department of Energy (DOE) and the State of Idaho mandates that all high-level radioactive waste (HLW) now stored at the Idaho Chemical Processing Plant (ICPP) will be treated so that it is ready to be moved out of Idaho for disposal by a target data of 2035. This study investigates the direct grouting of all ICPP calcine (including the HLW dry calcine and those resulting from calcining sodium-bearing liquid waste currently residing in the ICPP storage tanks) as the treatment method to comply with the settlement agreement. This method involves grouting the calcined waste and casting the resulting hydroceramic grout into stainless steel canisters. These canisters will be stored at the Idaho National Engineering and Environmental Laboratory (INEEL) until they are sent to a national geologic repository. The operating period for grouting treatment will be from 2013 through 2032, and all the HLW will be treated and in interim storage by the end of 2032.

  8. Hot isostatic press waste option study report

    SciTech Connect

    Russell, N.E.; Taylor, D.D.

    1998-02-01

    A Settlement Agreement between the Department of Energy and the State of Idaho mandates that all high-level radioactive waste now stored at the Idaho Chemical Processing Plant be treated so that it is ready to move out of Idaho for disposal by the target date of 2035. This study investigates the immobilization of all Idaho Chemical Processing Plant calcine, including calcined sodium bearing waste, via the process known as hot isostatic press, which produces compact solid waste forms by means of high temperature and pressure (1,050 C and 20,000 psi), as the treatment method for complying with the settlement agreement. The final waste product would be contained in stainless-steel canisters, the same type used at the Savannah River Site for vitrified waste, and stored at the Idaho National Engineering and Environmental Laboratory until a national geological repository becomes available for its disposal. The waste processing period is from 2013 through 2032, and disposal at the High Level Waste repository will probably begin sometime after 2065.

  9. Nuclear Power Options Viability Study. Volume 4. Bibliography

    SciTech Connect

    Trauger, D B; White, J D; Sims, J W

    1986-09-01

    Documents in the Nuclear Power Options Viability Study (NPOVS) bibliography are classified under one of four headings or categories as follows: nuclear options; light water reactors; liquid metal reactors; and high temperature reactors. The collection and selection of these documents, beginning early in 1984 and continuing through March of 1986, was carried out in support of the study's objective: to explore the viabilities of several nuclear electric power generation options for commercial deployment in the United States between 2000 and 2010. There are approximately 550 articles, papers, reports, and books in the bibliography that have been selected from some 2000 surveyed. The citations have been made computer accessible to facilitate rapid on-line retrieval by keyword, author, corporate author, title, journal name, or document number.

  10. Parametric system studies of candidate TF coil system options for the Tokamak Fusion Core Experiment (TFCX)

    SciTech Connect

    Reiersen, W.T.; Flanagan, C.A.; Miller, J.B.

    1983-01-01

    System studies were performed to determine the sensitivity of hybrid and superconducting toroidal field (TF) coil system options to maximum field at the TF coil and to field enhancement due to resistive insert coils. The studies were performed using Tokamak Fusion Core Experiment (TFCX) design assumptions, guidelines, and criteria and involved iterative execution of the Fusion Engineering Design Center (FEDC) systems code, magnetohydrodynamics (MHD) equilibrium code, and EFFI (a code to evaluate magnetic field strength). The results indicate that for TFCX with no minimum wall loading specified, a design point chosen solely on the basis of cost would likely be in the low-field region of design space where the cost advantage of hybrids is least apparent. However, as the desired neutron wall loading increases, the hybrid option suggests an increasing cost advantage over the all-superconducting option; this cost advantage is countered by increased complexity in design - particularly in assembly and maintenance.

  11. Space station needs, attributes and architectural options study

    NASA Technical Reports Server (NTRS)

    1983-01-01

    All the candidate Technology Development missions investigated during the space station needs, attributes, and architectural options study are described. All the mission data forms plus additional information such as, cost, drawings, functional flows, etc., generated in support of these mission is included with a computer generated mission data form.

  12. MOOSES: Multiple Option Observation System for Experimental Studies.

    ERIC Educational Resources Information Center

    Tapp, Jon; Wehby, Joseph

    The Multiple Option Observation System for Experimental Studies (MOOSES) is a flexible data collection and analysis package for applied behavioral research that addresses the needs of researchers interested in live coding of observational data. MOOSES allows the researcher to design a coding system for a particular research question. General types…

  13. Technical options for outflow reconstruction in domino liver transplantation: A single European center experience.

    PubMed

    De la Serna, Sofía; Llado, Laura; Ramos, Emilio; Fabregat, Joan; Baliellas, Carme; Busquets, Juli; Secanella, Lluis; Pelaez, Nuria; Torras, Jaume; Rafecas, Antoni

    2015-08-01

    Venous outflow is critical to the success of liver transplantation (LT). In domino liver transplantation (DLT), the venous cuffs should be shared between the donor and the recipient, and the length can be compromised. The aim of this study was to describe and compare the technical options for outflow reconstruction used at our institution. This was a retrospective analysis of 39 consecutive DLT recipients between January 1997 and May 2013. Twenty-seven men and 12 women (mean age, 61.8 ± 4.3 years) underwent LT and consented to receive a liver from a donor with familial amyloid polyneuropathy (FAP). The main indications were hepatocellular carcinoma and hepatitis C virus cirrhosis. All recipients underwent transplantation by a piggyback technique. Liver procurement in the FAP donors was performed with the classic technique in 22 patients and with the piggyback technique in the last 17. In these latter cases, for vascular outflow reconstruction, a cadaveric venous graft was interposed between the hepatic vein (HV) stump of the FAP liver and the recipient HV in 11 cases (28%). Since 2011, we have employed arterial grafts to be interposed between the vessels stumps: a tailored arterial graft in 5 patients and an aortic graft in 1 case. There was no postoperative mortality. Arterial and portal complications presented in 2 (5.1) and 4 patients (10.3), respectively. Postoperative outflow complications (post-LT subacute Budd-Chiari syndrome) occurred in 4 patients, and all of them had received a venous interposed graft for reconstruction. The incidence of outflow complications tended to be higher among patients with venous grafts than those with arterial graft interposition. Overall patient survival at 1, 3, 5, and 10 years was 97%, 79%, respectively. Arterial grafts constitute a feasible and safe option for vascular outflow reconstruction in DLT because they are associated with a relatively low incidence of complications. The recently proposed Bellvitge arterial

  14. Individualized patient-centered lifestyle recommendations: an expert system for communicating patient specific cardiovascular risk information and prioritizing lifestyle options.

    PubMed

    Chi, Chih-Lin; Nick Street, W; Robinson, Jennifer G; Crawford, Matthew A

    2012-12-01

    We propose a proof-of-concept machine-learning expert system that learned knowledge of lifestyle and the associated 10-year cardiovascular disease (CVD) risks from individual-level data (i.e., Atherosclerosis Risk in Communities Study, ARIC). The expert system prioritizes lifestyle options and identifies the one that maximally reduce an individual's 10-year CVD risk by (1) using the knowledge learned from the ARIC data and (2) communicating for patient-specific cardiovascular risk information and personal limitations and preferences (as defined by variables used in this study). As a result, the optimal lifestyle is not only prioritized based on an individual's characteristics but is also relevant to personal circumstances. We also explored probable uses and tested the system in several examples using real-world scenarios and patient preferences. For example, the system identifies the most effective lifestyle activities as the starting point for an individual's behavior change, shows different levels of BMI changes and the associated CVD risk reductions to encourage weight loss, identifies whether weight loss or smoking cessation is the most urgent change for a diabetes patient, etc. Answers to the questions noted above vary based on an individual's characteristics. Our validation results from clinical trial simulations, which compared original with the optimal lifestyle using an independent dataset, show that the optimal individualized patient-centered lifestyle consistently reduced 10-year CVD risks.

  15. Study of Lyndon B. Johnson Space Center utility systems

    NASA Technical Reports Server (NTRS)

    Redding, T. E.; Huber, W. C.

    1977-01-01

    The results of an engineering study of potential energy saving utility system modifications for the NASA Lyndon B. Johnson Space Center are presented. The objective of the study was to define and analyze utility options that would provide facility energy savings in addition to the approximately 25 percent already achieved through an energy loads reduction program. A systems engineering approach was used to determine total system energy and cost savings resulting from each of the ten major options investigated. The results reported include detailed cost analyses and cost comparisons of various options. Cost are projected to the year 2000. Also included are a brief description of a mathematical model used for the analysis and the rationale used for a site survey to select buildings suitable for analysis.

  16. Center for Creative Studies, Detroit

    ERIC Educational Resources Information Center

    AIA Journal, 1976

    1976-01-01

    One of the ten buildings chosen to receive 1976 AIA honor awards, the arts center houses the departments of sculpture, painting, graphics, advertising art, photography, and industrial design. (Author/MLF)

  17. (Alaskan commodities irradiation project: An options analysis study)

    SciTech Connect

    Zarling, J.P.; Swanson, R.B.; Logan, R.R.; Das, D.K.; Lewis, C.E.; Workman, W.G.; Tumeo, M.A.; Hok, C.I.; Birklind, C.A.; Bennett, F.L. . Inst. of Northern Engineering)

    1989-09-01

    The ninety-ninth US Congress commissioned a six-state food irradiation research and development program to evaluate the commercial potential of this technology. Hawaii, Washington, Iowa, Oklahoma and Florida as well as Alaska have participated in the national program; various food products including fishery products, red meats, tropical and citrus fruits and vegetables have been studied. The purpose of the Alaskan study was to review and evaluate those factors related to the technical and economic feasibility of an irradiator in Alaska. This options analysis study will serve as a basis for determining the state's further involvement in the development of food irradiation technology.

  18. Space station data system analysis/architecture study. Task 2: Options development, DR-5. Volume 2: Design options

    NASA Technical Reports Server (NTRS)

    1985-01-01

    The primary objective of Task 2 is the development of an information base that will support the conduct of trade studies and provide sufficient data to make key design/programmatic decisions. This includes: (1) the establishment of option categories that are most likely to influence Space Station Data System (SSDS) definition; (2) the identification of preferred options in each category; and (3) the characterization of these options with respect to performance attributes, constraints, cost and risk. This volume contains the options development for the design category. This category comprises alternative structures, configurations and techniques that can be used to develop designs that are responsive to the SSDS requirements. The specific areas discussed are software, including data base management and distributed operating systems; system architecture, including fault tolerance and system growth/automation/autonomy and system interfaces; time management; and system security/privacy. Also discussed are space communications and local area networking.

  19. Cooperative Monitoring Center Occasional Paper/8: Cooperative Border Security for Jordan: Assessment and Options

    SciTech Connect

    Qojas, M.

    1999-03-01

    This document is an analysis of options for unilateral and cooperative action to improve the security of Jordan's borders. Sections describe the current political, economic, and social interactions along Jordan's borders. Next, the document discusses border security strategy for cooperation among neighboring countries and the adoption of confidence-building measures. A practical cooperative monitoring system would consist of hardware for early warning, command and control, communications, and transportation. Technical solutions can expand opportunities for the detection and identification of intruders. Sensors (such as seismic, break-wire, pressure-sensing, etc.) can warn border security forces of intrusion and contribute to the identification of the intrusion and help formulate the response. This document describes conceptual options for cooperation, offering three scenarios that relate to three hypothetical levels (low, medium, and high) of cooperation. Potential cooperative efforts under a low cooperation scenario could include information exchanges on military equipment and schedules to prevent misunderstandings and the establishment of protocols for handling emergency situations or unusual circumstances. Measures under a medium cooperation scenario could include establishing joint monitoring groups for better communications, with hot lines and scheduled meetings. The high cooperation scenario describes coordinated responses, joint border patrols, and sharing border intrusion information. Finally, the document lists recommendations for organizational, technical, and operational initiatives that could be applicable to the current situation.

  20. Controlled Ecological Life Support Systems (CELSS) conceptual design option study

    NASA Technical Reports Server (NTRS)

    Oleson, Melvin; Olson, Richard L.

    1986-01-01

    Results are given of a study to explore options for the development of a Controlled Ecological Life Support System (CELSS) for a future Space Station. In addition, study results will benefit the design of other facilities such as the Life Sciences Research Facility, a ground-based CELSS demonstrator, and will be useful in planning longer range missions such as a lunar base or manned Mars mission. The objectives were to develop weight and cost estimates for one CELSS module selected from a set of preliminary plant growth unit (PGU) design options. Eleven Space Station CELSS module conceptual PGU designs were reviewed, components and subsystems identified and a sensitivity analysis performed. Areas where insufficient data is available were identified and divided into the categories of biological research, engineering research, and technology development. Topics which receive significant attention are lighting systems for the PGU, the use of automation within the CELSS system, and electric power requirements. Other areas examined include plant harvesting and processing, crop mix analysis, air circulation and atmosphere contaminant flow subsystems, thermal control considerations, utility routing including accessibility and maintenance, and nutrient subsystem design.

  1. Market-Based Indian Grid Integration Study Options: Preprint

    SciTech Connect

    Stoltenberg, B.; Clark, K.; Negi, S. K.

    2012-03-01

    The Indian state of Gujarat is forecasting solar and wind generation expansion from 16% to 32% of installed generation capacity by 2015. Some states in India are already experiencing heavy wind power curtailment. Understanding how to integrate variable generation (VG) into the grid is of great interest to local transmission companies and India's Ministry of New and Renewable Energy. This paper describes the nature of a market-based integration study and how this approach, while new to Indian grid operation and planning, is necessary to understand how to operate and expand the grid to best accommodate the expansion of VG. Second, it discusses options in defining a study's scope, such as data granularity, generation modeling, and geographic scope. The paper also explores how Gujarat's method of grid operation and current system reliability will affect how an integration study can be performed.

  2. Space station data system analysis/architecture study. Task 2: Options development, DR-5. Volume 3: Programmatic options

    NASA Technical Reports Server (NTRS)

    1985-01-01

    Task 2 in the Space Station Data System (SSDS) Analysis/Architecture Study is the development of an information base that will support the conduct of trade studies and provide sufficient data to make design/programmatic decisions. This volume identifies the preferred options in the programmatic category and characterizes these options with respect to performance attributes, constraints, costs, and risks. The programmatic category includes methods used to administrate/manage the development, operation and maintenance of the SSDS. The specific areas discussed include standardization/commonality; systems management; and systems development, including hardware procurement, software development and system integration, test and verification.

  3. A feasibility study for a manufacturing technology deployment center

    SciTech Connect

    Not Available

    1994-10-31

    The Automation & Robotics Research Institute (ARRI) and the Texas Engineering Extension Service (TEEX) were funded by the U.S. Department of Energy to determine the feasibility of a regional industrial technology institute to be located at the Superconducting Super Collider (SSC) Central Facility in Waxahachie, Texas. In response to this opportunity, ARRI and TEEX teamed with the DOE Kansas City Plant (managed by Allied Signal, Inc.), Los Alamos National Laboratory (managed by the University of California), Vought Aircraft Company, National Center for Manufacturing Sciences (NCMS), SSC Laboratory, KPMG Peat Marwick, Dallas County Community College, Navarro Community College, Texas Department of Commerce (TDOC), Texas Manufacturing Assistance Center (TMAC), Oklahoma Center for the Advancement of Science and Technology, Arkansas Science and Technology Authority, Louisiana Productivity Center, and the NASA Mid-Continent Technology Transfer Center (MCTTC) to develop a series of options, perform the feasibility analysis and secure industrial reviews of the selected concepts. The final report for this study is presented in three sections: Executive Summary, Business Plan, and Technical Plan. The results from the analysis of the proposed concept support the recommendation of creating a regional technology alliance formed by the states of Texas, New Mexico, Oklahoma, Arkansas and Louisiana through the conversion of the SSC Central facility into a Manufacturing Technology Deployment Center (MTDC).

  4. A review of automatic patient identification options for public health care centers with restricted budgets.

    PubMed

    García-Betances, Rebeca I; Huerta, Mónica K

    2012-01-01

    A comparative review is presented of available technologies suitable for automatic reading of patient identification bracelet tags. Existing technologies' backgrounds, characteristics, advantages and disadvantages, are described in relation to their possible use by public health care centers with budgetary limitations. A comparative assessment is presented of suitable automatic identification systems based on graphic codes, both one- (1D) and two-dimensional (2D), printed on labels, as well as those based on radio frequency identification (RFID) tags. The analysis looks at the tradeoffs of these technologies to provide guidance to hospital administrator looking to deploy patient identification technology. The results suggest that affordable automatic patient identification systems can be easily and inexpensively implemented using 2D code printed on low cost bracelet labels, which can then be read and automatically decoded by ordinary mobile smart phones. Because of mobile smart phones' present versatility and ubiquity, the implantation and operation of 2D code, and especially Quick Response® (QR) Code, technology emerges as a very attractive alternative to automate the patients' identification processes in low-budget situations.

  5. A Review of Automatic Patient Identification Options for Public Health Care Centers with Restricted Budgets

    PubMed Central

    García-Betances, Rebeca I.; Huerta, Mónica K.

    2012-01-01

    A comparative review is presented of available technologies suitable for automatic reading of patient identification bracelet tags. Existing technologies’ backgrounds, characteristics, advantages and disadvantages, are described in relation to their possible use by public health care centers with budgetary limitations. A comparative assessment is presented of suitable automatic identification systems based on graphic codes, both one- (1D) and two-dimensional (2D), printed on labels, as well as those based on radio frequency identification (RFID) tags. The analysis looks at the tradeoffs of these technologies to provide guidance to hospital administrator looking to deploy patient identification technology. The results suggest that affordable automatic patient identification systems can be easily and inexpensively implemented using 2D code printed on low cost bracelet labels, which can then be read and automatically decoded by ordinary mobile smart phones. Because of mobile smart phones’ present versatility and ubiquity, the implantation and operation of 2D code, and especially Quick Response® (QR) Code, technology emerges as a very attractive alternative to automate the patients’ identification processes in low-budget situations. PMID:23569629

  6. Space station needs, attributes and architectural options study. Volume 4: Architectural options, subsystems, technology and programmatics

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Space station architectural options, habitability considerations and subsystem analyses, technology, and programmatics are reviewed. The methodology employed for conceiving and defining space station concepts is presented. As a result of this approach, architectures were conceived and along with their supporting rationale are described within this portion of the report. Habitability consideration and subsystem analyses describe the human factors associated with space station operations and includes subsections covering (1) data management, (2) communications and tracking, (3) environmental control and life support, (4) manipulator systems, (5) resupply, (6) pointing, (7) thermal management and (8) interface standardization. A consolidated matrix of subsystems technology issues as related to meeting the mission needs for a 1990's era space station is presented. Within the programmatics portion, a brief description of costing and program strategies is outlined.

  7. Center for Thin Film Studies

    DTIC Science & Technology

    1988-10-31

    initial layers of ZnS by molecular beam epitaxy (MBE) and atomic layer evaporation (ALE) on substrates prepared using different protocols . Work...I TASK 1. Nucleation and Growth Studies By Conventional and Atomic Layer Evaporation... LAYER EVAPORATION Principal Investigator: U. J. Gibson Project Goal The goal of the project is to study the details of nucleation and film growth

  8. Diversifying the Social Studies: The Trend Toward Optional Public Schools

    ERIC Educational Resources Information Center

    Barr, Robert D.

    1974-01-01

    Developments of alternative schools are reviwed, emphasizing differences in five types of public school options and the similarities of these types in respect to their social education programs. (Author/KM)

  9. Space station data system analysis/architecture study. Task 2: Options development DR-5. Volume 1: Technology options

    NASA Technical Reports Server (NTRS)

    1985-01-01

    The second task in the Space Station Data System (SSDS) Analysis/Architecture Study is the development of an information base that will support the conduct of trade studies and provide sufficient data to make key design/programmatic decisions. This volume identifies the preferred options in the technology category and characterizes these options with respect to performance attributes, constraints, cost, and risk. The technology category includes advanced materials, processes, and techniques that can be used to enhance the implementation of SSDS design structures. The specific areas discussed are mass storage, including space and round on-line storage and off-line storage; man/machine interface; data processing hardware, including flight computers and advanced/fault tolerant computer architectures; and software, including data compression algorithms, on-board high level languages, and software tools. Also discussed are artificial intelligence applications and hard-wire communications.

  10. Impact of Flexibility Options on Grid Economic Carrying Capacity of Solar and Wind: Three Case Studies

    SciTech Connect

    Denholm, Paul; Novacheck, Joshua; Jorgenson, Jennie; O'Connell, Matthew

    2016-12-01

    In this study, we attempt to quantify the benefits of various options of grid flexibility by measuring their impact on two measures: economic carrying capacity and system costs. Flexibility can increase ECC and reduce overall system costs. In some cases, options that provide a limited increase in ECC can provide significant operational savings, thus demonstrating the need to evaluate flexibility options using multiple metrics. The value of flexibility options varies regionally due to different generation mixes and types of renewables. The more rapid decline in PV value compared to wind makes PV more dependent on adding flexibility options, including transmission and energy storage.

  11. Impact of Flexibility Options on Grid Economic Carrying Capacity of Solar and Wind: Three Case Studies

    SciTech Connect

    Denholm, Paul; Novacheck, Joshua; Jorgenson, Jennie; O'Connell, Matthew

    2016-12-01

    In this study, we attempt to quantify the benefits of various options of grid flexibility by measuring their impact on two measures: economic carrying capacity and system costs. Flexibility can increase economic carrying capacity and reduce overall system costs. In some cases, options that provide a limited increase in economic carrying capacity can provide significant operational savings, thus demonstrating the need to evaluate flexibility options using multiple metrics. The value of flexibility options varies regionally due to different generation mixes and types of renewables. The more rapid decline in PV value compared to wind makes PV more dependent on adding flexibility options, including transmission and energy storage.

  12. Data Center Economizer Contamination and Humidity Study

    SciTech Connect

    Shehabi, Arman; Tschudi, William; Gadgil, Ashok

    2007-03-06

    Data centers require continuous air conditioning to address high internal heat loads (heat release from equipment) and maintain indoor temperatures within recommended operating levels for computers. Air economizer cycles, which bring in large amounts of outside air to cool internal loads when weather conditions are favorable, could save cooling energy. There is reluctance from many data center owners to use this common cooling technique, however, due to fear of introducing pollutants and potential loss of humidity control. Concerns about equipment failure from airborne pollutants lead to specifying as little outside air as permissible for human occupants. To investigate contamination levels, particle monitoring was conducted at 8 data centers in Northern California. Particle counters were placed at 3 to 4 different locations within and outside of each data center evaluated in this study. Humidity was also monitored at many of the sites to determine how economizers affect humidity control. Results from this study indicate that economizers do increase the outdoor concentration in data centers, but this concentration, when averaged annually, is still below current particle concentration limits. Study results are summarized below: (1) The average particle concentrations measured at each location, both outside and at the servers, are shown in Table 1. Measurements show low particle concentrations at all data centers without economizers, regardless of outdoor particle concentrations. Particle concentrations were typically an order of magnitude below both outside particle concentrations and recently published ASHRAE standards. (2) Economizer use caused sharp increases in particle concentrations when the economizer vents were open. The particle concentration in the data centers, however, quickly dropped back to pre-economizer levels when the vents closed. Since economizers only allow outside air part of the time, the annual average concentrations still met the ASHRAE

  13. Trade Study of Multiple Thruster Options for the Mars Airplane Concept

    NASA Technical Reports Server (NTRS)

    Kuhl, Christopher A.; Gayle, Steven W.; Hunter, Craig A.; Kenney, Patrick S.; Scola, Salvatore; Paddock, David A.; Wright, Henry S.; Gasbarre, Joseph F.

    2009-01-01

    A trade study was performed at NASA Langley Research Center under the Planetary Airplane Risk Reduction (PARR) project (2004-2005) to examine the option of using multiple, smaller thrusters in place of a single large thruster on the Mars airplane concept with the goal to reduce overall cost, schedule, and technical risk. The 5-lbf (22N) thruster is a common reaction control thruster on many satellites. Thousands of these types of thrusters have been built and flown on numerous programs, including MILSTAR and Intelsat VI. This study has examined the use of three 22N thrusters for the Mars airplane propulsion system and compared the results to those of the baseline single thruster system.

  14. Cosmos, an international center for advanced studies

    NASA Technical Reports Server (NTRS)

    Ryzhov, Iurii; Alifanov, Oleg; Sadin, Stanley; Coleman, Paul

    1990-01-01

    The concept of Cosmos, a Soviet operating center for aerospace activities, is presented. The main Cosmos participants are the Institute for Aerospace Education, the Institute for Research and Commercial Development, and the Department of Space Policy and Socio-Economic Studies. Cosmos sponsors a number of educational programs, basic research, and studies of the social impact of space-related technologies.

  15. Child Day Care Center Licensing Study, 1997.

    ERIC Educational Resources Information Center

    Children's Foundation, Washington, DC.

    The 1997 Child Care Center Licensing Study contains an update of information compiled in 1991 by the Children's Foundation. The data was obtained from the central regulatory office of each of the 50 states, the District of Columbia, Puerto Rico, and the Virgin Islands. The study is organized in alphabetical order by states and territories. The…

  16. Center for Japanese Study Abroad. Fastback 386.

    ERIC Educational Resources Information Center

    Jassey, William

    The Center for Japanese Study Abroad (CJSA) is a Japanese immersion and study abroad program implemented as a magnet program at inner-city Brien MacMahon High School in Norwalk, Connecticut. The program is supported by a grant from the state department of education. Attended by 60-70 students from high schools in southern Fairfield County…

  17. Weekend Study Buddies: Using Portable Learning Centers.

    ERIC Educational Resources Information Center

    Stephens, Harristina; Jairrels, Veda

    2003-01-01

    This article discusses how one teacher uses a weekend study buddy as a portable learning center for students (ages 5-9) with mild disabilities. The study buddy is a colorful cloth or paper bag that the students take home over the weekend. It can also be individualized to target particular needs. (Contains 8 references.) (CR)

  18. American Indian Studies Center Fortieth Anniversary

    ERIC Educational Resources Information Center

    Nash, Gary B.

    2011-01-01

    In this article, the author shares his comments on the past, present, and future of the American Indian Studies Center (AISC). He discusses how AISC was established and describes how American Indian studies have come a long way from the neglect and disparagement of Native Americans in the way American history is written and taught. He also…

  19. Stockbridge Munsee Community Health and Wellness Center and the Mohican Family Center Renewable Energy and Energy Efficiency Feasibility Study

    SciTech Connect

    DeRocher, Andy; Barrnett, Michael

    2014-03-14

    The results of the Renewable Energy and Energy Efficiency Feasibility Study of Stockbridge Munsee Community’s Health and Wellness Center (HWC) indicate that a variety of renewable energy options and energy conservation measures (ECMs) exist for the facility. A requirement of the Request for Proposal for this study was to assess renewable energy options that could offset 30 to 100 percent of the HWC’s energy use. This study identifies that a geothermal system is the most cost effective renewable energy option available to decrease the HWC’s energy consumption by 30 to 100 percent. Currently the HWC performs in the lowest 8 percent of buildings in its building category, as scored in the EPA portfolio manager benchmarking tool. Multiple ECM opportunities have been identified with paybacks of less than five years to yield an estimated 25-percent decrease in annual energyconsumption. The ECMs within this payback period are estimated to save $26,800 per year with an implementation cost of just $4,650 (0.2 year payback). For the Mohican Family Center document: The results of the Renewable Energy and Energy Efficiency Feasibility Study of Stockbridge Munsee Community’s Mohican Family Center (MFC) indicate that a variety of renewable energy options and energy conservation measures (ECMs) exist for the facility. A requirement of the Request for Proposal for this study was to assess renewable energy options that could offset 30 to 100 percent of the MFC’s energy use. This study identifies that a geothermal system is the most cost effective renewable energy option available to decrease the MFC’s energy consumption by 30 to 100 percent. Currently the MFC performs better than 80 percent of buildings in its building category, as scored in the EPA portfolio manager benchmarking tool. Multiple ECM opportunities have been identified with short term paybacks to yield an estimated 13-percent decrease in energy consumption. The ECMs within this payback period are estimated

  20. Study on Alternative Cargo Launch Options from the Lunar Surface

    SciTech Connect

    Cheryl A. Blomberg; Zamir A. Zulkefli; Spencer W. Rich; Steven D. Howe

    2013-07-01

    In the future, there will be a need for constant cargo launches from Earth to Mars in order to build, and then sustain, a Martian base. Currently, chemical rockets are used for space launches. These are expensive and heavy due to the amount of necessary propellant. Nuclear thermal rockets (NTRs) are the next step in rocket design. Another alternative is to create a launcher on the lunar surface that uses magnetic levitation to launch cargo to Mars in order to minimize the amount of necessary propellant per mission. This paper investigates using nuclear power for six different cargo launching alternatives, as well as the orbital mechanics involved in launching cargo to a Martian base from the moon. Each alternative is compared to the other alternative launchers, as well as compared to using an NTR instead. This comparison is done on the basis of mass that must be shipped from Earth, the amount of necessary propellant, and the number of equivalent NTR launches. Of the options, a lunar coil launcher had a ship mass that is 12.7% less than the next best option and 17 NTR equivalent launches, making it the best of the presented six options.

  1. The Center for Star Formation Studies

    NASA Technical Reports Server (NTRS)

    Hollenbach, D.; Bell, K. R.; Laughlin, G.

    2002-01-01

    The Center for Star Formation Studies, a consortium of scientists from the Space Science Division at Ames and the Astronomy Departments of the University of California at Berkeley and Santa Cruz, conducts a coordinated program of theoretical research on star and planet formation. Under the directorship of D. Hollenbach (Ames), the Center supports postdoctoral fellows, senior visitors, and students; meets regularly at Ames to exchange ideas and to present informal seminars on current research; hosts visits of outside scientists; and conducts a week-long workshop on selected aspects of star and planet formation each summer.

  2. Teacher Curriculum Work Center: A Descriptive Study.

    ERIC Educational Resources Information Center

    Feiman, Sharon

    This monograph is one of a continuing series initiated to provide materials for teachers, parents, school administrators, and governmental decision-makers that might encourage reexamination of a range of evaluation issues and perspectives about schools and schooling. This monograph is a descriptive study of the Teacher Curriculum Work Center,…

  3. Child Care Center Licensing Study, 1998.

    ERIC Educational Resources Information Center

    Children's Foundation, Washington, DC.

    This report details a study of regulations for day care centers in the 50 United States, the District of Columbia, Puerto Rico, and the Virgin Islands. Data were collected by means of a mail questionnaire sent to each state central regulatory office. Following an introduction by Kay Hollestelle, the Children's Foundation executive director, the…

  4. Energy Education Training Center--Feasibility Study.

    ERIC Educational Resources Information Center

    Mead, George R.; And Others

    Presented are findings and recommendations of a study conducted to determine the need for an Energy Education Training Center in the Columbia Plateau region of Oregon and Washington. Four sections comprise this report: (1) service area, (2) service population, (3) problem definition, and (4) proposed solution, the EETC. Information summarized in…

  5. Immobilized low-level waste disposal options configuration study

    SciTech Connect

    Mitchell, D.E.

    1995-02-01

    This report compiles information that supports the eventual conceptual and definitive design of a disposal facility for immobilized low-level waste. The report includes the results of a joint Westinghouse/Fluor Daniel Inc. evaluation of trade-offs for glass manufacturing and product (waste form) disposal. Though recommendations for the preferred manufacturing and disposal option for low-level waste are outside the scope of this document, relative ranking as applied to facility complexity, safety, remote operation concepts and ease of retrieval are addressed.

  6. Space station needs, attributes and architectural options: Study summary

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Space station needs, attributes, and architectural options that affect the future implementation and design of a space station system are examined. Requirements for candidate missions are used to define functional attributes of a space station. Station elements that perform these functions form the basic station architecture. Alternative ways to accomplish these functions are defined and configuration concepts are developed and evaluated. Configuration analyses are carried to the point that budgetary cost estimates of alternate approaches could be made. Emphasis is placed on differential costs for station support elements and benefits that accrue through use of the station.

  7. Center for the Study of Traumatic Stress

    DTIC Science & Technology

    2016-06-15

    will continue to fulfill our mission. In this Annual Report, we share some of the many contributions we are making to enhance psychological health...Forensic Psychology and Forensic Psychi- New Collaborations in 2015 4 | CENTER FOR THE STUDY OF TRAUMATIC STRESS, USU atry Fellowship training...the project. Psychological Stress and Resilience in Mortuary Affairs (MA) Soldiers: Longitudinal Study Since 2005, CSTS has conducted research on

  8. Space Operations Center system analysis study extension. Volume 2: Programmatics and cost

    NASA Technical Reports Server (NTRS)

    1982-01-01

    A summary of Space Operations Center (SOC) orbital space station costs, program options and program recommendations is presented. Program structure, hardware commonality, schedules and program phasing are considered. Program options are analyzed with respect to mission needs, design and technology options, and anticipated funding constraints. Design and system options are discussed.

  9. Study of long term options for electric vehicle air conditioning

    SciTech Connect

    Dieckmann, J.; Mallory, D.

    1991-07-01

    There are strong incentives in terms of national energy and environmental policy to encourage the commercialization of electrically powered vehicles in the U.S. Among these incentives are reduced petroleum consumption, improved electric generation capacity utilization, reduced IC engine emissions, and, depending on the primary fuel used for electric power generation, reduced emissions of carbon dioxide. A basic requirement for successfully commercializing any motor vehicle in the US is provision of adequate passenger comfort heating and air conditioning (cooling). Although air conditioning is generally sold as optional equipment, in excess of 80% of the automobiles and small trucks sold in the US have air conditioning systems. In current, pre-commercial electric vehicles, comfort heating is provided by a liquid fuel fired heater that heats water which is circulated through the standard heater core in the conventional interior air handling unit. Air conditioning is provided by electric motor driven compressors, installed in a system having, perhaps, an {open_quotes}upsized{close_quotes} condenser and a standard evaporator (front and rear evaporators in some instances) installed in the conventional interior air handler. Although this approach is adequate in the near term for initial commercialization efforts, a number of shortcomings of this arrangement, as well as longer range concerns need to be addressed. In this project, the long term alternatives for cooling and heating electric vehicles effectively, efficiently (with minimum range penalties), and without adverse environmental impacts have been examined. Identification of options that can provide both heating and cooling is important, in view of the disadvantages of carrying separate heating and cooling systems in the vehicle.

  10. Study of long term options for electric vehicle air conditioning

    SciTech Connect

    Dieckmann, J.; Mallory, D. , Inc., Cambridge, MA )

    1991-07-01

    There are strong incentives in terms of national energy and environmental policy to encourage the commercialization of electrically powered vehicles in the U.S. Among these incentives are reduced petroleum consumption, improved electric generation capacity utilization, reduced IC engine emissions, and, depending on the primary fuel used for electric power generation, reduced emissions of carbon dioxide. A basic requirement for successfully commercializing any motor vehicle in the US is provision of adequate passenger comfort heating and air conditioning (cooling). Although air conditioning is generally sold as optional equipment, in excess of 80% of the automobiles and small trucks sold in the US have air conditioning systems. In current, pre-commercial electric vehicles, comfort heating is provided by a liquid fuel fired heater that heats water which is circulated through the standard heater core in the conventional interior air handling unit. Air conditioning is provided by electric motor driven compressors, installed in a system having, perhaps, an [open quotes]upsized[close quotes] condenser and a standard evaporator (front and rear evaporators in some instances) installed in the conventional interior air handler. Although this approach is adequate in the near term for initial commercialization efforts, a number of shortcomings of this arrangement, as well as longer range concerns need to be addressed. In this project, the long term alternatives for cooling and heating electric vehicles effectively, efficiently (with minimum range penalties), and without adverse environmental impacts have been examined. Identification of options that can provide both heating and cooling is important, in view of the disadvantages of carrying separate heating and cooling systems in the vehicle.

  11. Preliminary Results From the C-Pulse® OPTIONS HF European Multicenter Post-Market Study

    PubMed Central

    Schulz, Antonia; Krabatsch, Thomas; Schmitto, Jan D.; Hetzer, Roland; Seidel, Mirko; Dohmen, Pascal M.; Hotz, Holger

    2016-01-01

    Background The C-Pulse® System is an extra-aortic balloon counterpulsation device. It is used to treat patients with heart failure disease in NYHA functional class III or ambulatory class IV. Material/Methods We present preliminary site-reported 6-month data from 3 centers in Germany as part of the prospective observational post-market OPTIONS HF study. Results Between May 2013 and March 2014, the C-Pulse System was implanted in 8 patients (7 male) with a mean age of 61.6±9.3 years. Four had ischemic and 4 had non-ischemic cardiomyopathy. No stroke, myocardial infarction, major bleeding, or major infection due to the device were reported. One patient developed non-device-related refractory tachycardia with worsening heart failure 12 h after surgery and underwent left ventricular assist device implantation. Within 6 months of observation, functional status improved from NYHA III to II in 5 patients, and 2 remained in NYHA III. Mean left ventricular ejection fraction increased from 24.3±7.9% to 44.5±4.5% (p<0.0001). Mean Kansas City Cardiomyopathy Questionnaire overall score improved from 28.6±19.1 to 59.1±22.5 (p=0.0183). Six-minute walk test was performed in 6 out of 7 patients at follow-up. The mean distance improved from 252.0±85.1 m to 279.2±87.5 m (p>0.05). One patient was weaned off the device after 6 months of support. Conclusions The C-Pulse System provides a therapeutic option for patients with moderate-to-severe heart failure and seems to improve quality of life and cardiac function over time. PMID:26887528

  12. A Study of the Galacic Center Lobe

    NASA Astrophysics Data System (ADS)

    Law, C. J.

    2005-12-01

    The Galactic center lobe (GCL) is a degree-scale (140 pc, assuming 8 kpc distance) shell that runs perpendicular away from the galactic plane at radio wavelengths. The GCL spans a region of the Galaxy that is home to a massive black hole, dense star clusters, supernova remnants, and massive star formation. Since it was discovered more than two decades ago, its coincidence with the Galactic center region has led to speculation that it may be a signature of mild starburst- or AGN-fuelled activity; evidence supporting the outflow hypothesis has been weak or contradictory. To further our understanding of the GCL, we have made the following observations of diffuse gas and dust using the GBT, VLA, and Spitzer/IRAC: \\begin{enumerate} A multi-wavelength radio continuum survey using the GBT shows that the GCL has a nonthermal spectral index that steepens at high Galactic latitudes. A radio recombination line study of the GCL also finds thermal gas within the GCL with line widths that constrain the electron temperature to be less than ˜3000 K, but with radial velocities near 0 km s-1. A linearly polarized radio continuum study using the VLA shows that the rotation measure in the GCL ranges from --800 to +400 rad m-2 with an unusual east-west gradient. The warm dust and PAH emission, studied with Spitzer/IRAC, is concentrated outside the radio continuum shell. We conclude that the GCL has a single origin and discuss the possibility that it was formed by the expulsion of gas from the Galactic center by stellar winds and supernovae during the last 10 Myr. We also present serendipitous discoveries from the large-area, multiwavelength observing campaign. This work was made possible by support from the NRAO.

  13. Seismometer readings studied in Mission Control Center

    NASA Technical Reports Server (NTRS)

    1971-01-01

    The seismometer reading from the impact made by the Apollo 15 Saturn S-IVB stage when it struck the lunar surface is studied by scientists in the Mission Control Center. Dr. Gary Latham (dark suit, wearing lapel button) of Columbia University is responsible for the design and experiment data analysis of the Passive Seismic Experiment of the Apollo Lunar Surface Experiment Package (ALSEP). The man on the left, writing, is Nafi Toksos of the Massachusetts Institute of Technology. Looking on at upper left is Dave Lammlein, also with Columbia.

  14. The New Center for Advanced Energy Studies

    SciTech Connect

    L.J. Bond; K. Kostelnik; R.A. Wharton; A. Kadak

    2006-06-01

    A secure and affordable energy supply is essential for achieving U.S. national security, in continuing U.S. prosperity and in laying the foundation to enable future economic growth. The next generation energy workforce in the U.S. is a critical element in meeting both national and global energy needs. The Center for Advanced Energy Studies (CAES) was established in 2005 in response to U.S. Department of Energy (DOE) requirements. CAES, located at the new Idaho National Laboratory (INL), will address critical energy education, research, policy study and training needs. CAES is a unique joint partnership between the Battelle Energy Alliance (BEA), the State of Idaho, an Idaho University Consortium (IUC), and a National University Consortium (NUC). CAES will be based in a new facility that will foster collaborative academic and research efforts among participating institutions.

  15. Nuclear Power Options Viability Study. Volume 3. Nuclear discipline topics

    SciTech Connect

    Trauger, D B; White, J D; Bowers, H I; Braid, R B; Cantor, R A; Daniels, L; Davis, R M; Delene, J G; Gat, U; Hood, T C

    1986-09-01

    Innovative reactor concepts are described and evaluated in accordance with criteria established in the study. The reactors to be studied were chosen on the basis of three ground rules: (1) the potential for commercialization between 2000-2010, (2) economic competiveness with coal-fired plants, and (3) the degree of passive safety in the design. The concepts, classified by coolants, were light water reactors, liquid metal reactors, and high temperature reactors, and most were of modular design. All the concepts appear to be potentially viable in the time frame selected, but the information available is not adequate for a definitive evaluation of their economic competitiveness. This volume primarily reports in greater detail on several topics from the study. These are: Construction, Economics, Regulation, Safety and Economic Risk, Nuclear Waste Transportation and Disposal, and Market Acceptance. Although treated generically, the topics are presented in the context of the reactor concepts of the study.

  16. CHoosing Options for Insomnia in Cancer Effectively (CHOICE): Design of a patient centered comparative effectiveness trial of acupuncture and cognitive behavior therapy for insomnia.

    PubMed

    Garland, Sheila N; Gehrman, Philip; Barg, Frances K; Xie, Sharon X; Mao, Jun J

    2016-03-01

    Insomnia is a prevalent and persistent side effect of cancer, which if left unaddressed, can be unremitting and negatively influence physical and mental well-being. Acupuncture and Cognitive Behavioral Therapy (CBT) are commonly used non-pharmacological treatments that are efficacious for treating insomnia in cancer patients; however, little is known about the comparative effectiveness of these options. The goal of personalized medicine is to determine which treatments are most effective for which individuals, and patient preference for treatment is a particularly important contributor to adherence and outcomes. Here we describe the design of a clinical trial that begins to determine how best to personalize the treatment of insomnia for cancer survivors. This project is a randomized controlled comparative effectiveness trial with a nested qualitative study comparing acupuncture and CBT for insomnia and co-morbid symptoms in a heterogeneous sample of 160 cancer survivors. The primary aim is to determine which treatment is associated with the largest reduction in insomnia severity. The secondary aim is to examine the demographic, clinical, and psychological characteristics that predict and/or moderate treatment effect. Patients will receive ten treatments of acupuncture or 7 sessions of CBT over eight weeks and complete validated patient-reported outcome measures of sleep and co-morbid symptoms at baseline, mid-treatment, post-treatment, and at three-months to assess durability of effect. The results of the proposed study have the potential to improve healthcare outcomes by helping cancer survivors and their caregivers make informed and evidence-based decisions, leading to patient-centered and personalized care for cancer survivors with insomnia.

  17. Center for Advanced Energy Studies Program Plan

    SciTech Connect

    Kevin Kostelnik

    2005-09-01

    The world is facing critical energy-related challenges regarding world and national energy demands, advanced science and energy technology delivery, nuclear engineering educational shortfalls, and adequately trained technical staff. Resolution of these issues is important for the United States to ensure a secure and affordable energy supply, which is essential for maintaining U.S. national security, continued economic prosperity, and future sustainable development. One way that the U.S. Department of Energy (DOE) is addressing these challenges is by tasking the Battelle Energy Alliance, LLC (BEA) with developing the Center for Advanced Energy Studies (CAES) at the Idaho National Laboratory (INL). By 2015, CAES will be a self-sustaining, world-class, academic and research institution where the INL; DOE; Idaho, regional, and other national universities; and the international community will cooperate to conduct critical energy-related research, classroom instruction, technical training, policy conceptualization, public dialogue, and other events.

  18. VAMOS: The verification and monitoring options study: Current research options for in-situ monitoring and verification of contaminant remediation and containment within the vadose zone

    SciTech Connect

    Betsill, J.D.; Gruebel, R.D.

    1995-09-01

    The Verification and Monitoring Options Study Project (VAMOS) was established to identify high-priority options for future vadose-zone environmental research in the areas of in-situ remediation monitoring, post-closure monitoring, and containment emplacement and verification monitoring. VAMOS examined projected needs not currently being met with applied technology in order to develop viable monitoring and verification research options. The study emphasized a compatible systems approach to reinforce the need for utilizing compatible components to provide user friendly site monitoring systems. To identify the needs and research options related to vadose-zone environmental monitoring and verification, a literature search and expert panel forums were conducted. The search included present drivers for environmental monitoring technology, technology applications, and research efforts. The forums included scientific, academic, industry, and regulatory environmental professionals as well as end users of environmental technology. The experts evaluated current and future monitoring and verification needs, methods for meeting these needs, and viable research options and directions. A variety of high-priority technology development, user facility, and technology guidance research options were developed and presented as an outcome of the literature search and expert panel forums.

  19. Nuclear Power Options Viability Study. Volume 1. Executive summary

    SciTech Connect

    Trauger, D.B.; White, J.D.; Booth, R.S.; Bowers, H.I.; Braid, R.B.; Cantor, R.A.; Cleveland, J.C.; Delene, J.G.; Gat, U.; Hood, T.C.

    1986-09-01

    Innovative reactor concepts are described and evaluated in accordance with criteria established in the study. The reactors to be studied were selected on the basis of three ground rules: (1) the potential for commercialization between 2000 to 2010, (2) economic competitiveness with coal, and (3) the degree of passive safety in the design. The concepts, classified by coolants, were light water reactors, liquid metal reactors, and high-temperature reactors, and most were of modular design. Although the information available is not adequate for a definitive evaluation of economic competitiveness, all of the concepts appear to be potentially viable in the time frame selected. Public and institutional acceptance of nuclear power was found to be affected primarily by four issues: (1) operational safety, (2) waste handling and disposal, (3) construction and operating costs, and (4) the adequacy of management and regulatory controls.

  20. The culture of education in a large dialysis organization: informing patient-centered decision making on treatment options for renal replacement therapy.

    PubMed

    Mollicone, Debra; Pulliam, Joseph; Lacson, Eduardo

    2013-01-01

    Challenged by the observation that newly admitted dialysis patients were often unaware of their treatment options, Fresenius Medical Care, North America developed a program to improve information delivered to chronic kidney disease (CKD) patients prior to their need for renal replacement therapy. Six years ago, the Treatment Options Program (TOPs) was established utilizing a standardized approach to educate individuals with CKD Stages 3 and 4. The program education focuses on modality and vascular access options. A key component includes follow-up at predetermined intervals, offering additional education and patient reminders to continue to work with their physician in selecting a preferred renal replacement modality. Since program inception, over 73,000 individuals have been educated through TOPs. Home therapy utilization as first treatment is higher in the patient population that received TOPs education. Similarly, participants had a higher rate of permanent vascular access with decreased use of hemodialysis catheters upon admission. Avoiding hemodialysis catheter use and expanding home therapy utilization both offer potential benefits to all stakeholders: patients, providers, and payors, particularly as we move toward accountable healthcare systems. The ability to expand the TOPs program relies on seeing patients early enough to allow each patient time to process the information and work with their physician to select the modality and access that best meets their healthcare and lifestyle needs. Educating our patients facilitates empowerment and active participation in their therapy, a much coveted component of patient-centered health care for the renal provider community as we look to the future.

  1. Engineering study of tank fill options for landfill closure

    SciTech Connect

    Skelly, W.A.

    1996-09-27

    To prepare single-shell tanks for closure, it will be necessary to piece some type of load- bearing fill material inside the tanks to support the domes. Provision of internal support permits the simplifying assumption that the combined weight of the dome, the existing operational soil cover, and the surface barrier will eventually transfer to and be carried by the fill. This engineering study provides descriptions and evaluations of four alternative concepts for fitting and stabilizing nominally empty SSTs with fill materials. For this study it is assumed that 99 percent (or more) of tank wastes will be retrieved before closure is undertaken. The alternatives are: Gravel: tanks would be fitted with crushed aggregate using a rotating stinger apparatus installed in the central riser; Grout: tanks would be fitted with a pumpable, ex-situ mixed grout formulation; Hybrid: tanks would be fitted first with coarse aggregate, then with grout, producing a pre-placed aggregate concrete material; or Concrete: tank. would be filled with a highly-flowable, ex-situ mixed concrete formulation.

  2. Center for Micro Air Vehicle Studies

    DTIC Science & Technology

    2013-02-01

    25 Figure 30: Insect Wing Comparison: (Top) Bumblebee; (Center) Cicada ; (Bottom) Wasp ......... 26 Figure 31... cicada , and wasp. At first glance, these wings appear to be unrelated in venial structure. It was found that each of these insects belong to...Bumblebee; (Center) Cicada ; (Bottom) Wasp Another common characteristic of these wings is the tendency to maintain a heavy structure closest to the wing

  3. Environmental Studies. Plano Outdoor Learning Center.

    ERIC Educational Resources Information Center

    Plano Independent School District, TX.

    This curriculum guide for the Plano Intermediate School District (Texas) Outdoor Learning Center is divided into three major sections. Section I provides information on the numbered stations/posts found along the perimeter and inner trails of the center and includes brief comments on the philosophy of environmental education and the history…

  4. A prefeasibility study of energy resource options in Hainan, China

    SciTech Connect

    Hill, L.J.; Russell, M. |; Barron, W.F.; LaRocco, P.; Shen, Z.

    1992-10-01

    This study identifies a strategy that (1) provides future energy services for Hainan in the least environmentally degrading way, (2) eliminates the need to build significant amounts of new fossil-fueled, electric generating capacity, saving capital to invest in other development projects, (3) lowers the cost that Hainan households and businesses will pay to light their homes and run their industries, (4) reduces the future coal import bill, and (5) improves the prospects for export industries. implementing this strategy will promote economic development and growth in Hainan, improve the standard of living, and preserve to the greatest extent possible Hainan`s rich environmental resource base, a key requirement for its tourist industry. The focus of this strategy is to adapt proven policies and techniques for producing and using energy more efficiently to existing conditions in Hainan. This Report applies the principles of integrated resource planning (IRP) and the experiences in other countries to outline a strategy for the Province. The experience is that fuel consumption can be reduced without lessening the ability of consumers, industry, and the government to obtain the energy services that higher use of fuel would otherwise bring. Further, those energy services can be provided with less capital investment than would be necessary if traditional practices were followed. Both of these results have obvious and important development and environmental benefits. In short, consumers have more money available to buy other things; production costs are lowered, improving the ability of firms to compete in international markets; and more capital is available to invest in new machinery and equipment that produces goods and services to use in Hainan or to export to other countries.

  5. A prefeasibility study of energy resource options in Hainan, China

    SciTech Connect

    Hill, L.J.; Russell, M. Tennessee Univ., Knoxville, TN ); Barron, W.F. ); LaRocco, P. ); Shen, Z. )

    1992-10-01

    This study identifies a strategy that (1) provides future energy services for Hainan in the least environmentally degrading way, (2) eliminates the need to build significant amounts of new fossil-fueled, electric generating capacity, saving capital to invest in other development projects, (3) lowers the cost that Hainan households and businesses will pay to light their homes and run their industries, (4) reduces the future coal import bill, and (5) improves the prospects for export industries. implementing this strategy will promote economic development and growth in Hainan, improve the standard of living, and preserve to the greatest extent possible Hainan's rich environmental resource base, a key requirement for its tourist industry. The focus of this strategy is to adapt proven policies and techniques for producing and using energy more efficiently to existing conditions in Hainan. This Report applies the principles of integrated resource planning (IRP) and the experiences in other countries to outline a strategy for the Province. The experience is that fuel consumption can be reduced without lessening the ability of consumers, industry, and the government to obtain the energy services that higher use of fuel would otherwise bring. Further, those energy services can be provided with less capital investment than would be necessary if traditional practices were followed. Both of these results have obvious and important development and environmental benefits. In short, consumers have more money available to buy other things; production costs are lowered, improving the ability of firms to compete in international markets; and more capital is available to invest in new machinery and equipment that produces goods and services to use in Hainan or to export to other countries.

  6. Trade study: Liquid hydrogen transportation - Kennedy Space Center. [cost and operational effectivenss of shipping methods.

    NASA Technical Reports Server (NTRS)

    Gray, D. J.

    1978-01-01

    Cryogenic transportation methods for providing liquid hydrogen requirements are examined in support of shuttle transportation system launch operations at Kennedy Space Center, Florida, during the time frames 1982-1991 in terms of cost and operational effectiveness. Transportation methods considered included sixteen different options employing mobile semi-trailer tankers, railcars, barges and combinations of each method. The study concludes that the most effective method of delivering liquid hydrogen from the vendor production facility in New Orleans to Kennedy Space Center includes maximum utilization of existing mobile tankers and railcars supplemented by maximum capacity mobile tankers procured incrementally in accordance with shuttle launch rates actually achieved.

  7. Revisiting Graduation Requirements and Diploma Options for Youth with Disabilities: A National Study. Technical Report 49

    ERIC Educational Resources Information Center

    Johnson, David R.; Thurlow, Martha L.; Stout, Karen E.

    2007-01-01

    This paper examines the results of a national study on the current status of state graduation policies and diploma options for youth with disabilities. It examines state policies in relation to their intended benefits as well as possible unintended consequences, and compared the findings with a similar study conducted by Johnson and Thurlow in…

  8. Options for commercial tokamaks

    SciTech Connect

    Dabiri, A.E.; Keeton, D.C.; Thomson, S.L.

    1986-07-01

    Systems studies have been performed at the Fusion Engineering Design Center (FEDC) to assess commercial tokamak options. One study investigates the economics of high-beta operation and determines an optimum operating range of 10 to 20% beta, with a corresponding neutron wall loading of 6 to 8 MW/m/sup 2/. A second study determines conditions under which small, low-power tokamaks can be economically combined into a 1200-MW(electric) multiplex power plant. The results of these studies have directed future efforts at the FEDC toward a high-beta, tokamak design using a modular maintenance configuration.

  9. Options and limitations in studies of successive pregnancy outcomes: an overview.

    PubMed

    Basso, Olga

    2007-07-01

    This paper provides a brief overview of options and limitations in studies of successive pregnancy outcomes, largely derived from the author's personal experience on Danish registries. The issues discussed here by no means constitute an exhaustive list, but aim at providing an introduction for researchers interested in this topic.

  10. PHILADELPHIA AIR TOXICS STUDY: EVALUATION OF RISK MANAGEMENT OPTIONS USING MIRA

    EPA Science Inventory

    Evaluation of risk management options usually takes place within single programs at the U.S. EPA. This can produce inadvertent tradeoffs among important criteria by risk managers and other decision makers; resulting in decision surprises. This study is a demonstration of a diff...

  11. Vomiting Center reanalyzed: An electrical stimulation study

    NASA Technical Reports Server (NTRS)

    Miller, A. D.; Wilson, V. J.

    1982-01-01

    Electrical stimulation of the brainstem of 15 decerebrate cats produced stimulus-bound vomiting in only 4 animals. Vomiting was reproducible in only one cat. Effective stimulating sites were located in the solitary tract and reticular formation. Restricted localization of a vomiting center, stimulation of which evoked readily reproducible results, could not be obtained.

  12. Student-Centered and Teacher-Centered Classroom Management: A Case Study of Three Elementary Teachers

    ERIC Educational Resources Information Center

    Garrett, Tracey

    2008-01-01

    The major purpose of this case study was to document the classroom management beliefs and practices of three teachers reputed to implement student-centered instruction and to examine the relationship between their instructional and managerial approaches. More specifically, do teachers who use student-centered instruction also implement…

  13. Client Impact Study of Six Detoxification Centers ("Sub-Acute Receiving Centers").

    ERIC Educational Resources Information Center

    Mayer, Steven E.; And Others

    Results are reported of a study to determine the effects of detoxification centers on the people who use their services. A detoxification center is "a social rehabilitation facility established for the purpose of facilitating access into care and rehabilitation by detoxifying and evaluating the person and providing entrance into the continuum…

  14. Feasibility Study for the Ivano-Frankivsk District Heating Repowering: Analysis of Options

    SciTech Connect

    Markel, L.; Popelka, A.; Laskarevsky, V.

    2002-03-20

    Part of the U.S. Initiative on Joint Implementation with the Ukraine Inter-Ministerial Commission on Climate Change, financed by the US Department of Energy. The project was implemented by a team consisting of the US company SenTech, Inc. and the Ukrainian company Esco-West. The main objective of the effort was to assess available alternatives of Ivano-Frankivsk (I-F) District Heating repowering and provide information for I-F's investment decision process. This study provides information on positive and negative technical and economic aspects of available options. Three options were analyzed for technical merit and economic performance: 1. Installation of cogeneration system based on Gas Turbine (GT) and Heat Recovery Heat Exchanger with thermal capacity of 30 MW and electrical capacity of 13.5 MW. This Option assumes utilization of five existing boilers with total capacity of 221 MW. Existing boilers will be equipped with modern controls. Equipment in this Option was sized for longest operating hours, about 8000 based on the available summer baseload. 2. Installation of Gas Turbine Combined Cycle (GTCC) and Heat Recovery Steam Generator (HRSG) with thermal capacity 45 MW and electrical capacity of 58.7 MW. This Option assumes utilization of five existing boilers with total capacity of 221 MW. Existing boilers will be equipped with modern controls. The equipment was sized for medium, shoulder season thermal load, and some cooling was assumed during the summer operation for extension of operating hours for electricity production. 3. Retrofit of six existing boilers (NGB) with total thermal capacity of 255.9 MW by installation of modern control system and minor upgrades. This option assumes only heat production with minimum investment. The best economic performance and the largest investment cost would result from alternative GTCC. This alternative has positive Net Present Value (NPV) with discount rate lower than about 12%, and has IRR slightly above 12%. The

  15. Building America Case Study: New Town Builders' Power of Zero Energy Center, Denver, Colorado (Brochure)

    SciTech Connect

    Not Available

    2014-10-01

    New Town Builders, a builder of energy efficient homes in Denver, Colorado, offers a zero energy option for all the homes it builds. To attract a wide range of potential homebuyers to its energy efficient homes, New Town Builders created a 'Power of Zero Energy Center' linked to its model home in the Stapleton community of Denver. This case study presents New Town Builders' marketing approach, which is targeted to appeal to homebuyers' emotions rather than overwhelming homebuyers with scientific details about the technology. The exhibits in the Power of Zero Energy Center focus on reduced energy expenses for the homeowner, improved occupant comfort, the reputation of the builder, and the lack of sacrificing the homebuyers' desired design features to achieve zero net energy in the home. The case study also contains customer and realtor testimonials related to the effectiveness of the Center in influencing homebuyers to purchase a zero energy home.

  16. ART attrition and risk factors among Option B+ patients in Haiti: A retrospective cohort study

    PubMed Central

    Domerçant, Jean Wysler; Adler, Michelle; Yuhas, Krista; Myrtil, Martine; Young, Paul; François, Kesner; Grand’Pierre, Reynold; Lowrance, David

    2017-01-01

    Objectives In October 2012, the Haitian Ministry of Health endorsed the “Option B+” strategy to eliminate mother-to-child transmission of HIV and achieve HIV epidemic control. The objective of this paper is to assess and identify risk factors for attrition from the national ART program among Option B+ patients in the 12 months after ART initiation. Design This retrospective cohort study included patients newly initiating ART from October 2012-August 2013 at 68 ART sites covering 45% of all newly enrolled ART patients in all regions of Haiti. Methods With data from electronic medical records, we carried out descriptive analysis of sociodemographic, clinical, and pregnancy-related correlates of ART attrition, and used a modified Poisson regression approach to estimate relative risks in a multivariable model. Results There were 2,166 Option B+ patients who initiated ART, of whom 1,023 were not retained by 12 months (47.2%). One quarter (25.3%) dropped out within 3 months of ART initiation. Protective factors included older age, more advanced HIV disease progression, and any adherence counseling prior to ART initiation, while risk factors included starting ART late in gestation, starting ART within 7 days of HIV testing, and using an atypical ART regimen. Discussion Our study demonstrates early ART attrition among Option B+ patients and contributes evidence on the characteristics of women who are most at risk of attrition in Haiti. Our findings highlight the importance of targeted strategies to support retention among Option B+ patients. PMID:28264045

  17. Detector design studies for Turkish Accelerator Center

    NASA Astrophysics Data System (ADS)

    Aksu, Burçin; Piliçer, Ercan

    2017-02-01

    The proposed Particle Factory detector at Turkish Accelerator Center (TAC-PF) aims to search for charm physics, CP violation and mixing of D0 mesons as well as new physics effects by investigating head-on collisions of 1 GeV electron from Energy Recovery Linac (ERL) with 3.56 GeV positrons from synchrotron storage ring. In this work, we constructed the TAC-PF detector design by using a recently developed framework namely Detector Description for High Energy Physics (DD4hep). The baseline TAC-PF detector design and its qualifications were summarized, followed by a general description.

  18. Space station needs, attributes and architectural options study. Volume 1: Executive study

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Mission identification and validation, the benefits of a manned presence in space; attributes and architectures; time-phased mission and system requirements imposed on the space station; orbit selection; space station architectural options; technology selection; and program planning are addressed.

  19. An Early Study of Disposal Options for the Hubble Space Telescope

    NASA Astrophysics Data System (ADS)

    Griffin, Thomas J.; Hull, Scott M.; Bretthauer, Joy W.; Leete, Stephen

    2013-08-01

    Since its launch in 1990, the Hubble Space Telescope has been one of the most productive scientific endeavors in history. Nonetheless, all good things must eventually come to an end, including the useful life of this spacecraft. Since Hubble has no on-board propulsion system, its orbit is currently decaying, and recent models predict that without any intervention the telescope will reenter the atmosphere, no earlier than 2031. Due to the very large size of the spacecraft and the extensive use of materials that are expected to survive reentry heating, an uncontrolled reentry would pose an unacceptable risk of injury to the general public. The original designs called for the telescope to be retrieved by the Space Shuttle at the end of its mission, but that is no longer an option. An early study has been conducted to examine options for disposing of Hubble in a way that would drastically reduce the risk, or eliminate it entirely. In order to lay the foundation for an eventual decision several years from now, four basic options for disposal were studied, each based on three possible telescope hardware status conditions. The study included an examination of the feasibility, reliability, end-to-end risk, cost, and schedule for each potential approach. A summary of the findings of the feasibility, reliability, and risk assessments from that study will be presented.

  20. An Early Study of Disposal Options for the Hubble Space Telescope

    NASA Astrophysics Data System (ADS)

    Griffin, Thomas J.; Hull, Scott M.; Bretthaauer, Joy W.; Leete, Stephen

    2013-09-01

    Since its launch in 1990, the Hubble Space Telescope has been one of the most productive scientific endeavors in history. Nonetheless, all good things must eventually come to an end, including the useful life of this spacecraft. Since Hubble has no on-board propulsion system, its orbit is currently decaying, and recent models predict that without any intervention the telescope will reenter the atmosphere, no earlier than 2031. Due to the very large size of the spacecraft and the extensive use of materials that are expected to survive reentry heating, an uncontrolled reentry would pose an unacceptable risk of injury to the general public. The original designs called for the telescope to be retrieved by the Space Shuttle at the end of its mission, but that is no longer an option. An early study has been conducted to examine options for disposing of Hubble in a way that would drastically reduce the risk, or eliminate it entirely. In order to lay the foundation for an eventual decision several years from now, four basic options for disposal were studied, each based on three possible telescope hardware status conditions. The study included an examination of the feasibility, reliability, end-to-end risk, cost, and schedule for each potential approach. A summary of the findings of the feasibility, reliability, and risk assessments from that study will be presented.

  1. Control selection options for genome-wide association studies in cohorts.

    PubMed

    Wacholder, Sholom; Rotunno, Melissa

    2009-03-01

    Investigators planning studies within cohorts have many options for choosing an efficient sampling design for genome-wide association and other molecular epidemiology studies. Consideration of person-year and proportional hazards analyses of full cohorts may add further insight into ramifications of different designs. Empirical evidence from genome-wide association studies can supplement intuition and simulations in comparing properties of various case-control designs within cohorts. Additional theoretical and empirical work, justification of sampling choice in publications, and consideration of context and scientific aims can improve designs and, thereby, increase the scientific value and cost effectiveness of future studies.

  2. Patient-Centered Personal Health Record and Portal Implementation Toolkit for Ambulatory Clinics: A Feasibility Study.

    PubMed

    Nahm, Eun-Shim; Diblasi, Catherine; Gonzales, Eva; Silver, Kristi; Zhu, Shijun; Sagherian, Knar; Kongs, Katherine

    2017-04-01

    Personal health records and patient portals have been shown to be effective in managing chronic illnesses. Despite recent nationwide implementation efforts, the personal health record and patient portal adoption rates among patients are low, and the lack of support for patients using the programs remains a critical gap in most implementation processes. In this study, we implemented the Patient-Centered Personal Health Record and Patient Portal Implementation Toolkit in a large diabetes/endocrinology center and assessed its preliminary impact on personal health record and patient portal knowledge, self-efficacy, patient-provider communication, and adherence to treatment plans. Patient-Centered Personal Health Record and Patient Portal Implementation Toolkit is composed of Patient-Centered Personal Health Record and Patient Portal Implementation Toolkit-General, clinic-level resources for clinicians, staff, and patients, and Patient-Centered Personal Health Record and Patient Portal Implementation Toolkit Plus, an optional 4-week online resource program for patients ("MyHealthPortal"). First, Patient-Centered Personal Health Record and Patient Portal Implementation Toolkit-General was implemented, and all clinicians and staff were educated about the center's personal health record and patient portal. Then general patient education was initiated, while a randomized controlled trial was conducted to test the preliminary effects of "MyHealthPortal" using a small sample (n = 74) with three observations (baseline and 4 and 12 weeks). The intervention group showed significantly greater improvement than the control group in patient-provider communication at 4 weeks (t56 = 3.00, P = .004). For other variables, the intervention group tended to show greater improvement; however, the differences were not significant. In this preliminary study, Patient-Centered Personal Health Record and Patient Portal Implementation Toolkit showed potential for filling the gap in the current

  3. Feasibility Study on Performance Enhancement Options for the ECR Ion Thruster µ10

    NASA Astrophysics Data System (ADS)

    Nishiyama, Kazutaka; Hosoda, Satoshi; Usui, Miyuki; Tsukizaki, Ryudo; Hayashi, Hiroshi; Shimizu, Yukio; Kuninaka, Hitoshi

    In order to adapt to a wide variety of the space flights, such as small geosynchronous satellites and deep space explorers, feasibility study of performance enhancement options for the microwave discharge ion thruster µ10 is underway. Authors are considering the following five options: 1. Lower insertion loss DC blocks; 2. Direct monopole antenna insertion to the discharge chamber without using a circular waveguide part; 3. Optimization of gas injector layout which was originally located deep in the waveguide; 4. Additional magnet rings aiming ion loss reduction to the side wall of the discharge chamber; 5. New ion optics consists of a thinner screen grid and a smaller-hole accelerator grid. Not all but most of them have already been tested and reported in this article. The original models for Hayabusa asteroid explorer generated 8 mN at maximum. Larger thrust generation was impossible even if propellant flow rates and microwave powers were increased. It turned out to be feasible to increase the maximum thrust to a range of 10 - 11 mN with above mentioned options by supplying more flow rates and/or more microwave powers.

  4. HIV-positive pregnant and postpartum women's perspectives about Option B+ in Malawi: a qualitative study

    PubMed Central

    Katirayi, Leila; Namadingo, Hazel; Phiri, Mafayo; Bobrow, Emily A; Ahimbisibwe, Allan; Berhan, Aida Yemane; Buono, Nicole; Moland, Karen Marie; Tylleskär, Thorkild

    2016-01-01

    Introduction The implementation of lifelong antiretroviral treatment (ART) for all pregnant women (Option B+) in Malawi has resulted in a significant increase in the number of HIV-positive pregnant women initiating treatment. However, research has highlighted the challenge of retaining newly initiated women in care. This study explores barriers and facilitators that affect a woman's decision to initiate and to adhere to Option B+. Methods A total of 39 in-depth interviews and 16 focus group discussions were conducted. Eligible women were ≥18 years old, living with HIV and either pregnant and receiving antenatal care from a study site or had delivered a child within the last 18 months, breastfed their child and received services at one of the study sites. Eligible women were identified by healthcare workers (HCWs) in the antenatal clinic and ART unit. Focus groups were also conducted with HCWs employed in these departments. Qualitative data were analyzed using Maxqda version 10 (VERBI Software, Berlin, Germany). Results The general perception towards the drug regimen used in Option B+ was positive; women reported fewer side effects and acknowledged the positive benefits of ART. Women felt hopeful about prolonging their life and having an HIV-uninfected baby, yet grappled with the fact that ART is a lifelong commitment. Women and HCWs discussed challenges with the counselling services for prevention of mother-to-child HIV transmission under the new Option B+ guidelines, and many women struggled with initiating ART on the same day as learning their HIV status. Women wanted to discuss their circumstances with their husbands first, receive a CD4 count and obtain an HIV test at another facility to confirm their HIV status. HCWs expressed concern that women might just agree to take the drugs to please them. HCWs also discussed concerns around loss to follow-up and drug resistance. Conclusions Although Option B+ has significantly increased the number of women initiating

  5. Evaluation Study of Day-Care Centers in Israel.

    ERIC Educational Resources Information Center

    Korazim, Malka; Trachtenberg, Silvia

    In recent years, day-care centers for the elderly have been playing an increasingly important role in the community service system for the elderly in Israel. ESHEL, one of the leading agencies in developing day-care services in Israel initiated a comprehensive evaluation study of day-care centers to identify variations among different types of…

  6. A Descriptive Study of Three Typical "Quality" Day Care Centers.

    ERIC Educational Resources Information Center

    Drezek, Wendy

    This paper describes a study designed to collect quantified observational data on the behavior of children and teachers throughout the day at three typical quality day care centers. From 50 to 55 hours of observation were completed on five randomly-chosen 3-year-olds in each setting. While the number of subjects and centers was limited, the…

  7. Adult Skills Training Center: Feasibility Study.

    ERIC Educational Resources Information Center

    Skalski, John M.; Baratta, Anthony N.

    A 4-phase project, this study was conducted to determine the feasibility of a bilingual vocational skill training program for out-of-school youth and adults of the Perth Amboy Hispanic community. Sampled were 494 out-of-school youth and adults in the area. Findings include: (1) There is a significant need for an adult vocational skills training…

  8. Child Day Care Center Licensing Study, 1996.

    ERIC Educational Resources Information Center

    Children's Foundation, Washington, DC.

    The information contained in this report was compiled by The Children's Foundation in fall 1995 and reflects data provided by the regulatory offices in the 50 states, the District of Columbia, Puerto Rico, and the Virgin Islands. The study is organized in alphabetical order of the states and territories. The requirements, regulations, and policies…

  9. Pulsed activation analyses of the ITER blanket design options considered in the blanket trade-off study

    SciTech Connect

    Wang, Q.; Henderson, D.L.

    1994-12-31

    The International Thermonuclear Experimental Reactor (ITER) project began a new design phase called the Engineering Design Activity (EDA) which started in July 1992. A variety of blanket designs options were analyzed as a part of the U.S. ITER home team blanket option trade-off study (BOTS) which began in May 1993. The options considered were a self-cooled Li/V blanket, a helium cooled Li/V blanket and a water cooled 316 SS nonbreeding shield option. Detailed activation, dose rate and waste disposal rating calculations have been performed for these different ITER blanket design options based on a fluence of 3.0 MWa/m{sup 2} and an average neutron wall loading of 2.0 MW/m{sup 2}. A continuous operation assumption was utilized in the analysis. The results of this work are presented in this conference.

  10. Technical draft study report for TOPEX satellite options study, volume 1

    NASA Technical Reports Server (NTRS)

    1981-01-01

    The use of two spacecraft for adaptation to the TOPEX mission, namely the P80-1 and the GPS phase 2 are considered. The mission involved three mission options, each option varying in payload definition, payload weight, orbital altitude and payload power requirements. The P80-1 spacecraft is an Air Force Space Test Program satellite which carries a number of payloads to an orbital altitude of 400 n.mi. at a minimum inclination of 72.5 deg, and which has an orbital life capability of three years. The GPS phase 2 spacecraft is the operational satellite for the Global Positioning NAVSTAR navigation constellation provided for all service (and commercial) use.

  11. Autism Center First to Study Minimally Verbal Children

    MedlinePlus

    ... on. Feature: Taste, Smell, Hearing, Language, Voice, Balance Autism Center First to Study Minimally Verbal Children Past ... research exploring the causes, diagnosis, and treatment of autism spectrum disorder (ASD), a complex developmental disorder that ...

  12. Primary breast lymphoma: A single center study

    PubMed Central

    Zhang, Na; Cao, Caineng; Zhu, Yuan; Liu, Peng; Liu, Luying; Lu, Ke; Luo, Jialin; Zhou, Ning

    2017-01-01

    The aim of the present study was to summarize the clinical characteristics of primary breast lymphoma (PBL) and evaluate its management approaches. A total of 29 patients newly diagnosed with PBL, and treated between April 2006 and May 2013, were analyzed retrospectively. The median survival follow-up time for all patients was 66.8 (range, 25.4–110.0) months. The results of the follow-up revealed 22 living lymphoma-free patients and 7 patients who had succumbed to PBL. Of the 7 deceased patients, 6 had succumbed to lymphoma and 1 to chemotherapy-associated hepatic failure. In total, 1 patient who presented with bilateral breast lymphoma developed left breast relapse following lumpectomy and chemotherapy, 2 patients developed a bone marrow relapse, 1 patient developed lung and mediastinal lymph node relapses, and 1 patient developed a skin relapse. The Kaplan-Meier estimator predicted 5-year overall survival and progression-free survival rates for all patients of 74.4 and 74.6%, respectively. PBL appears to be a rare disease with a good overall prognosis and low incidence of local relapse, following chemotherapy alone or in combination with other treatments. Further studies investigating the development of effective agents for use in treatment-resistant patients are required.

  13. The Plant Information Center (PIC): A Web-Based Learning Center for Botanical Study.

    ERIC Educational Resources Information Center

    Greenberg, J.; Daniel, E.; Massey, J.; White, P.

    The Plant Information Center (PIC) is a project funded under the Institute of Museum and Library Studies that aims to provide global access to both primary and secondary botanical resources via the World Wide Web. Central to the project is the development and employment of a series of applications that facilitate resource discovery, interactive…

  14. Liquid–liquid mixing studies in annular centrifugal contactors comparing stationary mixing vane options

    SciTech Connect

    Wardle, Kent E.

    2015-09-11

    Comparative studies of multiphase operation of an annular centrifugal contactor show the impact of housing stationary mixing vane configuration. A number of experimental results for several different mixing vane options are reported for operation of a 12.5 cm engineering-scale contactor unit. Fewer straight vanes give greater mixing-zone hold-up compared to curved vanes. Quantitative comparison of droplet size distribution also showed a significant decrease in mean diameter for four straight vanes versus eight curved vanes. This set of measurements gives a compelling case for careful consideration of mixing vane geometry when evaluating hydraulic operation and extraction process efficiency of annular centrifugal contactors.

  15. Liquid–Liquid Mixing Studies in Annular Centrifugal Contactors Comparing Stationary Mixing Vane Options

    SciTech Connect

    Wardle, Kent E.

    2015-11-10

    Comparative studies of multiphase operation of annular centrifugal contactors showing the impact of housing stationary mixing vane configuration. A number of experimental results for several different mixing vane options are reported with selected measurements in a lab-scale 5 cm contactor and 12.5 cm engineering-scale unit. Fewer straight vanes give greater mixingzone hold-up compared to curved vanes. Quantitative comparison of droplet size distribution also showed a significant decrease in mean diameter for four straight vanes versus eight curved vanes. This set of measurements gives a compelling case for careful consideration of mixing vane geometry when evaluating hydraulic operation and extraction process efficiency of annular centrifugal contactors.

  16. Heat Exchanger Design Options and Tritium Transport Study for the VHTR System

    SciTech Connect

    Chang H. Oh; Eung S. Kim

    2008-09-01

    This report presents the results of a study conducted to consider heat exchanger options and tritium transport in a very high temperature reactor (VHTR) system for the Next Generation Nuclear Plant Project. The heat exchanger options include types, arrangements, channel patterns in printed circuit heat exchangers (PCHE), coolant flow direction, and pipe configuration in shell-and-tube designs. Study considerations include: three types of heat exchanger designs (PCHE, shell-and-tube, and helical coil); single- and two-stage unit arrangements; counter-current and cross flow configurations; and straight pipes and U-tube designs in shell-and-tube type heat exchangers. Thermal designs and simple stress analyses were performed to estimate the heat exchanger options, and the Finite Element Method was applied for more detailed calculations, especially for PCHE designs. Results of the options study show that the PCHE design has the smallest volume and heat transfer area, resulting in the least tritium permeation and greatest cost savings. It is theoretically the most reliable mechanically, leading to a longer lifetime. The two-stage heat exchanger arrangement appears to be safer and more cost effective. The recommended separation temperature between first and second stages in a serial configuration is 800oC, at which the high temperature unit is about one-half the size of the total heat exchanger core volume. Based on simplified stress analyses, the high temperature unit will need to be replaced two or three times during the plant’s lifetime. Stress analysis results recommend the off-set channel pattern configuration for the PCHE because stress reduction was estimated at up to 50% in this configuration, resulting in a longer lifetime. The tritium transport study resulted in the development of a tritium behavior analysis code using the MATLAB Simulink code. In parallel, the THYTAN code, previously performed by Ohashi and Sherman (2007) on the Peach Bottom data, was revived

  17. Charter School Facility Financing: Constraints and Options. A Study for the Massachusetts Charter School Resource Center.

    ERIC Educational Resources Information Center

    Dolan, John V.; Murray, Douglas P.; Walsh, Gregory J.

    In 1991, the charter school movement began in Minnesota and since then, 28 more states and the District of Columbia have passed similar versions of charter school law. This paper examines a facility planning model designed to help charter schools maximize their chances of succeeding in the effort to secure permanent facilities. The model includes…

  18. Royal Canadian Mounted Police National Operations Center Layout Study and Design Options

    DTIC Science & Technology

    2012-03-01

    for the individual requirements are as follows: 1. UFC: United Facilities Criteria (Department of Defense, 2008); 2. ISO 11064: Ergonomic Design ...NOC is required to accommodate additional personnel above and beyond the existing seated capacity. As such, the proposed design needs to improve the...for Standardization. (2000). 1SO 11064 - Ergonomic Design of Control Centres. Larson, C. E., & LaFasto, F. M. (1989). Teamwork: What must go right

  19. Center for the Study of Plasma Microturbulence

    SciTech Connect

    Parker, Scott E.

    2012-03-02

    We have discovered a possible "natural fueling" mechanism in tokamak fusion reactors using large scale gyrokinetic turbulence simulation. In the presence of a heat flux dominated tokamak plasma, cold ions naturally pinch radially inward. If cold DT fuel is introduced near the edge using shallow pellet injection, the cold fuel will pinch inward, at the expense of hot helium ash going radially outward. By adjusting the cold DT fuel concentration, the core DT density profiles can be maintained. We have also shown that cold source ions from edge recycling of cold neutrals are pinched radially inward. This mechanism may be important for fully understanding the edge pedestal buildup after an ELM crash. Work includes benchmarking the gyrokinetic turbulence codes in the electromagnetic regime. This includes cyclone base case parameters with an increasing plasma beta. The code comparisons include GEM, GYRO and GENE. There is good linear agreement between the codes using the Cyclone base case, but including electromagnetics and scanning the plasma beta. All the codes have difficulty achieving nonlinear saturation as the kinetic ballooning limit is approached. GEM does not saturate well when beta gets above about 1/2 of the ideal ballooning limit. We find that the lack of saturation is due to the long wavelength k{sub y} modes being nonlinearly pumped to high levels. If the fundamental k{sub y} mode is zeroed out, higher values of beta nonlinearly saturate well. Additionally, there have been studies to better understand CTEM nonlinear saturation and the importance of zonal flows. We have continued our investigation of trapped electron mode (TEM) turbulence. More recently, we have focused on the nonlinear saturation of TEM turbulence. An important feature of TEM is that in many parameter regimes, the zonal flow is unimportant. We find that when zonal flows are unimportant, zonal density is the dominant saturation mechanism. We developed a simple theory that agrees with the

  20. Evaluation of advanced propulsion options for the next manned transportation system: Propulsion evolution study

    NASA Technical Reports Server (NTRS)

    Spears, L. T.; Kramer, R. D.

    1990-01-01

    The objectives were to examine launch vehicle applications and propulsion requirements for potential future manned space transportation systems and to support planning toward the evolution of Space Shuttle Main Engine (SSME) and Space Transportation Main Engine (STME) engines beyond their current or initial launch vehicle applications. As a basis for examinations of potential future manned launch vehicle applications, we used three classes of manned space transportation concepts currently under study: Space Transportation System Evolution, Personal Launch System (PLS), and Advanced Manned Launch System (AMLS). Tasks included studies of launch vehicle applications and requirements for hydrogen-oxygen rocket engines; the development of suggestions for STME engine evolution beyond the mid-1990's; the development of suggestions for STME evolution beyond the Advanced Launch System (ALS) application; the study of booster propulsion options, including LOX-Hydrocarbon options; the analysis of the prospects and requirements for utilization of a single engine configuration over the full range of vehicle applications, including manned vehicles plus ALS and Shuttle C; and a brief review of on-going and planned LOX-Hydrogen propulsion technology activities.

  1. Rehabilitation Options

    MedlinePlus

    ... Speech Pathology Occupational Therapy Art Therapy Recreational therapy Neuropsychology Home Care Options Advanced Care Planning Palliative Care ... Speech Pathology Occupational Therapy Art Therapy Recreational therapy Neuropsychology Home Care Options Advanced Care Planning Palliative Care ...

  2. The best MSW treatment option by considering greenhouse gas emissions reduction: a case study in Georgia.

    PubMed

    Tayyeba, Omid; Olsson, Monika; Brandt, Nils

    2011-08-01

    The grave concern over climate change and new economic incentives such as the clean development mechanism (CDM) have given more weight to the potential of projects for reducing greenhouse gas (GHG) emissions. In the Adjara solid waste management project, even though the need for reductions in GHG emissions is acknowledged, it is not one of the key factors for selecting the most appropriate treatment method. This study addresses the benefit of various solid waste treatment methods that could be used in the Adjara project in terms of reducing GHG emissions. Seven different options for solid waste treatment are examined: open dumping as the baseline case, four options for landfill technology (no provision of landfill gas capture, landfill gas capture with open flare system, with enclosed flare system and with electricity generation), composting and anaerobic digestion with electricity production. CDM methodologies were used to quantify the amount of reductions for the scenarios. The study concludes sanitary landfill with capture and burning of landfill gas by an enclosed flare system could satisfy the requirements, including GHG reduction potential. The findings were tested for uncertainty and sensitivity by varying the data on composition and amount of waste and were found to be robust.

  3. Preferences for different insomnia treatment options in people with schizophrenia and related psychoses: a qualitative study

    PubMed Central

    Waters, Flavie; Chiu, Vivian W.; Janca, Aleksandar; Atkinson, Amanda; Ree, Melissa

    2015-01-01

    Symptoms of psychosis such as hallucinations and delusions can be intrusive and unwanted and often remain treatment-resistant. Due to recent progress in basic and clinical sciences, novel approaches such as sleep-based interventions are increasingly becoming offered to address the physical and mental health issues of people with severe mental illness. While the primary outcome is to improve sleep, studies have demonstrated that interventions that target symptoms of insomnia can also produce improvements in the severity of psychotic symptoms, quality of life, and functional outcomes. This study presents qualitative data on the attitudes and preferences of people with schizophrenia and schizo-affective disorders to three different types of therapies for insomnia (standard pharmacological, melatonin-based, and cognitive and/or behavior therapy). Interviews included discussions regarding the perceived advantages and limitations of different therapies, enablers to taking up the preferred option, as well as personal strategies that have helped respondents with sleep problems in the past. Results showed that, when given the choice, these individuals prefer psychological and behavioral-type therapy to other sleep interventions because of its potential to support and empower them in taking responsibility for their own recovery. Pharmacological therapies, by contrast, are viewed as useful in managing acute sleep problems, but only as a short-term solution. Overall, the findings underscore the need for patients’ active engagement when making decisions about treatment options. PMID:26236265

  4. A Study of Hair Follicular Transplantation as a Treatment Option for Vitiligo

    PubMed Central

    Thakur, Parul; Sacchidanand, S; Nataraj, HV; Savitha, AS

    2015-01-01

    Background: Repigmentation of vitiligo is closely related to hair follicles. Hence, replenishing melanocytes in vitiliginous patches utilizing undifferentiated stem cells of the hair follicles using follicular unit transplantation (FUT) is a possible treatment option. Objectives of the Study: To study the efficacy of FUT in cases of segmental/stabilized vitiligo as a treatment option for leukotrichia. Materials and Methods: Fifty patients with 63 lesions of stable vitiligo over nonglabrous areas were treated with follicular unit grafts. Reduction in the size of vitiligo patches as well as improvement in the associated leukotrichia were evaluated using subjective and objective assessments. Results: Of the 63 patches, good to excellent response was seen in 39 (61.9%), fair in 16 (25.4%), and poor in eight (12.7%) lesions. No repigmentation was seen in two (4.8%) lesions. The mean improvement seen was 61.17%. Excellent color match was observed in 44 lesions (69.8%). Repigmentation of the depigmented hairs occurred in 11 out of 46 patients with associated leukotrichia. Conclusion: FUT is a safe and effective method for treating localized and segmental vitiligo, especially on hairy parts of the skin. Though labor intensive, it was found to be associated with a quick patient recovery time, very low morbidity, and good color match. PMID:26865785

  5. Pricing Options.

    ERIC Educational Resources Information Center

    Tenopir, Carol

    1998-01-01

    Presents results of a recent survey of over 100 public and academic libraries about pricing options from online companies. Most options fall into three categories: pay-as-you-go, fixed-rate, and user-based. Results are discussed separately for public and academic libraries and for consortial discounts. Trends in pricing options preferred by…

  6. Deep UV to NIR Space Telescopes and Exoplanet Coronagraphs: A Trade Study on Throughput, Polarization, Mirror Coating Options and Requirements

    NASA Technical Reports Server (NTRS)

    Balasubramanian, Kunjithapatham; Shaklan, Stuart; Give'on, Amir; Cady, Eric; Marchen, Luis

    2011-01-01

    The NASA Exoplanet program and the Cosmic Origins program are exploring technical options to combine the visible to NIR performance requirements of a space coronagraph with the general astrophysics requirements of a space telescope covering the deep UV spectrum. Are there compatible options in terms of mirror coatings and telescope architecture to satisfy both goals? In this paper, we address some of the main concerns, particularly relating to polarization in the visible and throughput in the UV. Telescope architectures employing different coating options compatible with current technology are considered in this trade study.

  7. Options for Braille Centralization. Study I--Implementation Study of Centralized Braille Book Storage and Distribution System. Part 1--Options for Braille Centralization. Final Report.

    ERIC Educational Resources Information Center

    ManTech Technical Services Corp., Fairfax, VA.

    This final report presents results of the first phase of an effort to develop in detail the resource requirements, operating procedures, and estimated costs for several centralized braille service options at the Library of Congress. Existing procedures and services were analyzed, and three models for centralized braille services were formulated.…

  8. The IAEA CRP on Studies of Advanced Reactor Technology Options for Effective Incineration of Radioactive Waste

    SciTech Connect

    Maschek, W.; Chen, X.; Rineiski, A.; Schikorr, M.; Stanculescu, A.; Arien, B.; Malambu, E.; Bai, Y.; Li, J.; Wu, Y.; Zheng, S.; Chabert, C.; Peneliau, Y.; Chebeskov, A.; Dekoussar, V.; Vorotyntsev, M.; da Cruz, D.F.; Devan, K.; Gopalakrishnan, V.; Harish, R.; Mohanakrishnan, P.; Pandikumar, G.; Dulla, S.; Ravetto, P.; Feynberg, O.; Ignatiev, V.; Subbotin, V.; Surenkov, A.; Zakirov, R.; Kophazi, J.; Szieberth, M.; Morita, K.; Srivenkatesan, R.; Taczanowski, S.; Tucek, K.; Wider, H.; Vertes, P.; Uhlir, J.

    2007-07-01

    In 2003, the IAEA has initiated the Coordinated Research Project (CRP) on 'Studies of Advanced Reactor Technology Options for Effective Incineration of Radioactive Waste'. The overall objective of the CRP, performed within the framework of IAEA's Nuclear Energy Department's Technical Working Group on Fast Reactors, is to increase the capability of Member States in developing and applying advanced technologies in the area of long-lived radioactive waste utilization and transmutation. Twenty institutions from 15 Member States and one international organization participated in this CRP. The CRP concentrated on the assessment of the dynamic behavior of various transmutation systems. The reactor systems investigated comprise critical reactors, sub-critical accelerator driven systems with heavy liquid metal and gas cooling, critical molten salt systems, and hybrid fusion/fission systems. Both fertile and fertile-free fuel options have been investigated. Apart from the benchmarking of steady state core configurations (including the investigation of transmutation potential, burn-up behavior and decay heat of minor actinide (MA) bearing fuels), the CRP participants determined the safety coefficients for the individual systems and, in a second stage, performed transient analyses which reflected the generic safety related behavior of the various reactors types. (authors)

  9. A choice experiment analysis for solid waste disposal option: a case study in Malaysia.

    PubMed

    Pek, Chuen-Khee; Jamal, Othman

    2011-11-01

    In Malaysia, most municipal wastes currently are disposed into poorly managed 'controlled tipping' systems with little or no pollution protection measures. This study was undertaken to assist the relevant governmental bodies and service providers to identify an improved waste disposal management strategy. The study applied the choice experiment technique to estimate the nonmarket values for a number of waste disposal technologies. Implicit prices for environmental attributes such as psychological fear, land use, air pollution, and river water quality were estimated. Compensating surplus estimates incorporating distance from the residences of the respondents to the proposed disposal facility were calculated for a number of generic and technology-specific choice sets. The resulting estimates were higher for technology-specific options, and the distance factor was a significant determinant in setting an equitable solid waste management fee.

  10. Systems engineering study: tank 241-C-103 organic skimming,storage, treatment and disposal options

    SciTech Connect

    Klem, M.J.

    1996-10-23

    This report evaluates alternatives for pumping, storing, treating and disposing of the separable phase organic layer in Hanford Site Tank 241-C-103. The report provides safety and technology based preferences and recommendations. Two major options and several varations of these options were identified. The major options were: 1) transfer both the organic and pumpable aqueous layers to a double-shell tank as part of interim stabilization using existing salt well pumping equipment or 2) skim the organic to an above ground before interim stabilization of Tank 241-C-103. Other options to remove the organic were considered but rejected following preliminary evaluation.

  11. Center for Advanced Technology Training (CATT) Feasibility Study.

    ERIC Educational Resources Information Center

    Albuquerque Technical Vocational Inst., NM.

    A study of the feasibility of establishing a Center for Advanced Technology Training (CATT) at the Albuquerque Technical Vocational Institute (TVI Community College, New Mexico) was conducted by members of the Albuquerque business community, government representatives, and college administrators. Phase 1 of the study was an examination of the…

  12. Case Studies in Managing School Library Media Centers.

    ERIC Educational Resources Information Center

    Callison, Daniel; Morris, Jacqueline

    Thirty-two case studies illustrating problem areas and situations that develop in the modern environment of the electronic school library media program are presented for use by library science students and library/media center managers. Based on input from practicing librarians at the elementary and secondary levels, the studies are designed to…

  13. The Center for Coastal Studies: Sustainable Development Education in Mexico

    ERIC Educational Resources Information Center

    Ollervides, F.; Farrell, T.

    2007-01-01

    Purpose: The purpose of this paper is to present The School for Field Studies-Center for Coastal Studies (SFS-CCS) as a success story in sustainable development education. This success is based on a unique academic model, which incorporates sustainable development opportunities and challenges faced by the local community into the program…

  14. Center of Discovery I Study Guide. Education 302.

    ERIC Educational Resources Information Center

    Cain, Robert B.; And Others

    This study guide contains the objectives, design, and evaluation in plan for Center of Discovery I, and lists topics, directives, and basic readings and in-depth references and the self-tests for an 11-week program of independent study within the first of four education courses in a 2-year program. The major part of the guide is devoted to a…

  15. Liquid–liquid mixing studies in annular centrifugal contactors comparing stationary mixing vane options

    DOE PAGES

    Wardle, Kent E.

    2015-09-11

    Comparative studies of multiphase operation of an annular centrifugal contactor show the impact of housing stationary mixing vane configuration. A number of experimental results for several different mixing vane options are reported for operation of a 12.5 cm engineering-scale contactor unit. Fewer straight vanes give greater mixing-zone hold-up compared to curved vanes. Quantitative comparison of droplet size distribution also showed a significant decrease in mean diameter for four straight vanes versus eight curved vanes. This set of measurements gives a compelling case for careful consideration of mixing vane geometry when evaluating hydraulic operation and extraction process efficiency of annular centrifugalmore » contactors.« less

  16. [Space for the new. Archive - library - study center].

    PubMed

    Weber, Danny

    2014-01-01

    This article features a short outline of both the architectural history and the inventories of Leopoldina's archive and library. Moreover, the article presents the construction plans that will--when implemented in the near future--generate and provide outstanding working facilities in the form of a building ensemble consisting of an archive, library and study center. The future infrastructure of these Leopoldina buildings, located in the area of Emil-Abderhalden-/August-Bebel-Strasse, will sustainably foster and support the establishment of research projects at the Leopoldina Study Center.

  17. Women's experiences of three early miscarriage management options a qualitative study

    PubMed Central

    Smith, Lindsay F; Frost, Julia; Levitas, Ruth; Bradley, Harriet; Garcia, Jo

    2006-01-01

    Background Miscarriage affects around one in six pregnancies. Much research has taken place identifying the consequences of this for parents but is mainly quantitative. Of the limited qualitative studies, none have explored women's experiences of the methods of miscarriage management received. Aim To assess the social and personal impact of different management methods (expectant, medical and surgical) on women's experience of first trimester miscarriage. Design of study Qualitative interviews using a topic guide with a purposive cohort of four categories of women (each management method plus non-participants) 6 months to 1 year after first trimester miscarriage. Focus groups with both research participants and health workers. Setting Women from three hospitals in the South West of England that participated in the Miscarriage Treatment (MIST) trial. Method Seventy-two interviews were undertaken between September 1999 and June 2000. There were also five focus groups (47 participants) and two feedback sessions (8 participants) with written feedback from 12 women. Interviews lasted 0.5–2.5 hours generating over 2000 A4 pages of transcripts. The transcripts were analysed for common themes, using standard proformas, which were filled in by individual team members and then discussed by the whole research team. Iterative readings in the light of new emerging issues ensured that new themes could be identified throughout the analytical process. All transcripts were then encoded for the identified themes using NUDIST. Results Common themes emerged across all management options although some were specific to just one or two management options. The five major themes arising out of the data analysis were: intervention; experiences of care; finality; the ‘baby’; and pain and bleeding. Conclusions Women's experiences and beliefs vary widely and their preferences need to be considered in their early miscarriage management. The three methods have different benefits and

  18. Item-Option Weighting of Achievement Tests: Comparative Study of Methods.

    ERIC Educational Resources Information Center

    Downey, Ronald G.

    1979-01-01

    This research attempted to interrelate several methods of producing option weights (i.e., Guttman internal and external weights and judges' weights) and examined their effects on reliability and on concurrent, predictive, and face validity. It was concluded that option weighting offered limited, if any, improvement over unit weighting. (Author/CTM)

  19. ACLCP Periodical Storage Center: Feasibility Study, September 1974-April 1975.

    ERIC Educational Resources Information Center

    Cieslicki, Dorothy

    A study of alternative models for establishing a cooperative storage center for little used library materials by the members of the Area College Libraries of Central Pennsylvania (ACLCP) focused on periodicals. Considerations discussed include advantages--lower cost; space for growth and better access to holdings retained in active collections;…

  20. Environmental Studies Center Teacher Books. 6th Grade - River Investigation.

    ERIC Educational Resources Information Center

    Martin County Schools, Jensen Beach, FL. Environmental Studies Center.

    This teacher's guide, one of nine teacher packages developed for use in the sequential, hands-on, field-oriented, K-8 environmental education program of the Martin County Schools in Florida, was developed for use with elementary children in grade six prior to and after a visit to an environmental studies center located near an estuarine area. The…

  1. Social Work Information Center 2.0: A Case Study

    ERIC Educational Resources Information Center

    Xu, F. Grace

    2009-01-01

    The social work library at USC provides a case study of an academic library's transition to an information center service model. Analysis of the collection, user community, Web 2.0 applications, and Web usage data demonstrates how the changes facilitated library services and information literacy instruction. (Contains 6 tables and 3 figures.)

  2. Usability Studies and User-Centered Design in Digital Libraries

    ERIC Educational Resources Information Center

    Comeaux, David J.

    2008-01-01

    Digital libraries continue to flourish. At the same time, the principles of user-centered design and the practice of usability testing have been growing in popularity, spreading their influence into the library sphere. This article explores the confluence of these two trends by surveying the current literature on usability studies of digital…

  3. National Job Corps Study: Impacts by Center Characteristics.

    ERIC Educational Resources Information Center

    Burghardt, John; Schochet, Peter Z.

    The question of whether the Job Corps's impacts on students' employment and related outcomes differ according to the characteristics of the Job Corps center attended was examined. The study sample consisted of approximately 9,400 program group members and 6,000 control group members who were randomly selected from among the nearly 81,000…

  4. The University of Illinois Film Center Collection Use Study.

    ERIC Educational Resources Information Center

    Mills, Terry R.

    This report describes a study which used computer analyses of the center's film booking records for fiscal year 1981 to identify those subject areas in the collection for which holdings did not seem to accurately reflect the clientele's levels of interest, as indicated by their use of the collection. Results identified 60 subject areas which met…

  5. Environmental Studies Center Teacher Books. 8th Grade - Beach Investigation.

    ERIC Educational Resources Information Center

    Martin County Schools, Jensen Beach, FL. Environmental Studies Center.

    This teacher's guide, one of nine teacher packages developed for use in the sequential, hands-on, field-oriented, K-8 environmental education program of the Martin County Schools in Florida, was developed for use with secondary children in grade eight prior to and after a visit to an environmental studies center located near an estuarine area. The…

  6. Environmental Studies Center Teacher Books. 1st Grade - Habitats.

    ERIC Educational Resources Information Center

    Martin County Schools, Jensen Beach, FL. Environmental Studies Center.

    This teacher's guide, one of nine teacher packages developed for use in the sequential, hands-on, field-oriented, K-8 environmental education program of the Martin County Schools in Florida, was developed for use with elementary children in grade one prior to and after a visit to an environmental studies center located near an estuarine area. This…

  7. Environmental Studies Center Teacher Books. 3rd Grade - Grassflat Communities.

    ERIC Educational Resources Information Center

    Martin County Schools, Jensen Beach, FL. Environmental Studies Center.

    This teacher's guide, one of nine teacher packages developed for use in the sequential, hands-on, field-oriented, K-8 environmental education program of the Martin County Schools in Florida, was developed for use with elementary children in grade three prior to and after a visit to an environmental studies center located near an estuarine area.…

  8. Environmental Studies Center Teacher Books. 4th Grade - Mangrove Communities.

    ERIC Educational Resources Information Center

    Martin County Schools, Jensen Beach, FL. Environmental Studies Center.

    This teacher's guide, one of nine teacher packages developed for use in the sequential, hands-on, field-oriented, K-8 environmental education program of the Martin County Schools in Florida, was developed for use with elementary children in grade four prior to and after a visit to an environmental studies center located near an estuarine area. The…

  9. Cast Study: National Naval Medical Center, A Graduate Management Project

    DTIC Science & Technology

    2002-06-10

    Medical Center Base Map NNMC and Key 54 CD Z Cl> < c.2 1 m OvOV SU3M u 0 0 ~~J~0 0 -~ U~~ ~ X<<w zC CA 5 .UC w 0 ZK 9 0 CY 9 L V)W go w r 0 ,- 05 U w w Og0...FUNDING NUMBERS CASE STUDY: NATIONAL NAVAL MEDICAL CENTER A GRADUATE MANAGEMENT PROJECT 6. AUTHOR(S) LIEUTENANT (JG) MELODY S. PEALE MEDICAL SERVICE CORPS...USNR 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. pPDV^-- -’" !nDf-AxTT7ATION NATIONAL NAVAL MEDICAL CENTER BETHESDA 8901 WISCONSIN AVE

  10. Photosynthetic reaction center of green sulfur bacteria studied by EPR

    SciTech Connect

    Nitschke, W.; Rutherford, A.W. ); Fieler, U. )

    1990-04-24

    Membrane preparations of two species of the green sulfur bacteria Chlorobium have been studied be EPR. Three signals were detected which were attributed to iron-sulfur centers acting as electron acceptors in the photosynthetic reaction center. (1) A signal from a center designated F{sub B}, was photoinduced at 4K. (2) A similar signal, F{sub A}, was photoinduced in addition to the F{sub B} signal upon a short period of illumination at 200 K. (3) Further illumination at 200 K resulted in the appearance of a broad feature at g=1.78. This is attributed to the g{sub x} component of an iron-sulfur center designated F{sub X}. The designations of these signals as F{sub B}, F{sub A}, and F{sub X} are based on their spectroscopic similarities to signals in photosystem I (PS I). The orientation dependence of these EPR signals in ordered Chlorobium membrane multilayers is remarkably similar to that of their PS I homologues. A magnetic interaction between the reduced forms of F{sub B} and F{sub A} occurs, which is also very similar to that seen in PS I. The triplet state of P{sub 840}, the primary electron donor, could be photoinduced at 4 K in samples which had been preincubated with sodium dithionite and methyl viologen and then preilluminated at 200 K. The preillumination reduces the iron-sulfur centers while the preincubation is thought to result in the inactivation of an earlier electron acceptor. Orientation studies of the triplet signal in ordered multilayers indicate that the bacteriochlorophylls which act as the primary electron donor in Chlorobium are arranged with a structural geometry almost identical with that of the special pair in purple bacteria. The Chlorobium reaction center appears to be similar in some respects to both PS I and to the purple bacterial reaction center. This is discussed with regard to the evolution of the different types of reaction centers from a common ancestor.

  11. Development of the Jackson Heart Study Coordinating Center

    PubMed Central

    Campbell-Jenkins, Brenda W.; Addison, Clifton C.; Young, Lavon; Anugu, Pramod; Wilson, Gregory; Sarpong, Daniel

    2009-01-01

    The public health burden caused by cardiovascular disease (CVD) continues to adversely affect individuals in terms of cost, life expectancy, medical, pharmaceutical and hospital care. This burden has been excessive in the case of African Americans. The objective of this paper is to chronicle the procedures and processes that were implemented in the development of the Jackson Heart Study Coordinating Center. The Jackson Heart Study (JHS) is a population-based investigation of traditional and emerging risk factors that predict progression to CVD among African Americans. In response to the struggle against CVD, the Jackson Heart Study has convened a professional, technical, and administrative staff with specific competence in the operation of a coordinating center to handle the wide variety of areas related to CVD studies. The Jackson Heart Study Coordinating Center (JHSCC) was created to assure validity of the JHS findings and provide the resources necessary to meet comprehensive statistical needs (planning, implementing and monitoring data analysis); data management (designing, implementing and managing data collection and quality control), and administrative support. The JHSCC began with a commitment to support study functions in order to increase participant recruitment, retention and safety, meet regulatory requirements, prepare progress reports, and facilitate effective communication with the community and between all JHS centers. The JHSCC facilitates the efforts of the JHS scientists through the development and implementation of the study protocol. The efforts of the JHSCC have resulted in the successful preparation of scientific reports and manuscripts for publication and presentation of study findings and results. In summary, the JHSCC has emerged as an effective research mechanism that serves as the driving force behind the Jackson Heart Study activities. PMID:19543408

  12. New Whole-House Solutions Case Study: New Town Builders' Power of Zero Energy Center - Denver, Colorado

    SciTech Connect

    2014-10-01

    New Town Builders, a builder of energy efficient homes in Denver, Colorado, offers a zero energy option for all the homes it builds. To attract a wide range of potential homebuyers to its energy efficient homes, New Town Builders created a "Power of Zero Energy Center" linked to its model home in the Stapleton community. This case study presents New Town Builders' marketing approach, which is targeted to appeal to homebuyers' emotions rather than overwhelming homebuyers with scientific details about the technology. The exhibits in the Power of Zero Energy Center focus on reduced energy expenses for the homeowner, improved occupant comfort, the reputation of the builder, and the lack of sacrificing the homebuyers' desired design features to achieve zero net energy in the home. This case study also contains customer and realtor testimonials related to the effectiveness of the Center in influencing homebuyers to purchase a zero energy home.

  13. Space station needs, attributes and architectural options study. Final executive review

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Identification and validation of missions, the benefits of manned presence in space, attributes and architectures, space station requirements, orbit selection, space station architectural options, technology selection, and program planning are addressed.

  14. Technology Transfer Challenges: A Case Study of User-Centered Design in NASA's Systems Engineering Culture

    NASA Technical Reports Server (NTRS)

    Quick, Jason

    2009-01-01

    The Upper Stage (US) section of the National Aeronautics and Space Administration's (NASA) Ares I rocket will require internal access platforms for maintenance tasks performed by humans inside the vehicle. Tasks will occur during expensive critical path operations at Kennedy Space Center (KSC) including vehicle stacking and launch preparation activities. Platforms must be translated through a small human access hatch, installed in an enclosed worksite environment, support the weight of ground operators and be removed before flight - and their design must minimize additional vehicle mass at attachment points. This paper describes the application of a user-centered conceptual design process and the unique challenges encountered within NASA's systems engineering culture focused on requirements and "heritage hardware". The NASA design team at Marshall Space Flight Center (MSFC) initiated the user-centered design process by studying heritage internal access kits and proposing new design concepts during brainstorming sessions. Simultaneously, they partnered with the Technology Transfer/Innovative Partnerships Program to research inflatable structures and dynamic scaffolding solutions that could enable ground operator access. While this creative, technology-oriented exploration was encouraged by upper management, some design stakeholders consistently opposed ideas utilizing novel, untested equipment. Subsequent collaboration with an engineering consulting firm improved the technical credibility of several options, however, there was continued resistance from team members focused on meeting system requirements with pre-certified hardware. After a six-month idea-generating phase, an intensive six-week effort produced viable design concepts that justified additional vehicle mass while optimizing the human factors of platform installation and use. Although these selected final concepts closely resemble heritage internal access platforms, challenges from the application of the

  15. Space Station Systems Analysis Study. Volume 2: Program options, book 1, parts 1 and 2

    NASA Technical Reports Server (NTRS)

    1977-01-01

    Program options are defined and requirements are determined for integrating crew, mass, volume, and electrical power for a space construction base which incorporates the space shuttle external tanks. Orbits, stabilization, flight control hardware, as well as modules and aids for orbital assembly and servicing are considered. The effectiveness of various program options for life science and radio astronomy missions, for the solar terrestrial observatory, and for public service platforms is assessed. Technology development items are identified and costs are estimated.

  16. The NASA Lewis Research Center: An Economic Impact Study

    NASA Technical Reports Server (NTRS)

    Austrian, Ziona

    1996-01-01

    The NASA Lewis Research Center (LeRC), established in 1941, is one of ten NASA research centers in the country. It is situated on 350 acres of land in Cuyahoga County and occupies more than 140 buildings and over 500 specialized research and test facilities. Most of LeRC's facilities are located in the City of Cleveland; some are located within the boundaries of the cities of Fairview Park and Brookpark. LeRC is a lead center for NASA's research, technology, and development in the areas of aeropropulsion and selected space applications. It is a center of excellence for turbomachinery, microgravity fluid and combustion research, and commercial communication. The base research and technology disciplines which serve both aeronautics and space areas include materials and structures, instrumentation and controls, fluid physics, electronics, and computational fluid dynamics. This study investigates LeRC's economic impact on Northeast Ohio's economy. It was conducted by The Urban Center's Economic Development Program in Cleveland State University's Levin College of Urban Affairs. The study measures LeRC's direct impact on the local economy in terms of jobs, output, payroll, and taxes, as well as the indirect impact of these economic activities when they 'ripple' throughout the economy. To fully explain LeRC's overall impact on the region, its contributions in the areas of technology transfer and education are also examined. The study uses a highly credible and widely accepted research methodology. First, regional economic multipliers based on input-output models were used to estimate the effect of LERC spending on the Northeast Ohio economy. Second, the economic models were complemented by interviews with industrial, civic, and university leaders to qualitatively assess LeRC's impact in the areas of technology transfer and education.

  17. Mineral carbonation: energy costs of pretreatment options and insights gained from flow loop reaction studies

    SciTech Connect

    Penner, Larry R.; O'Connor, William K.; Dahlin, David C.; Gerdemann, Stephen J.; Rush, Gilbert E.

    2004-01-01

    Sequestration of carbon as a stable mineral carbonate has been proposed to mitigate environmental concerns that carbon dioxide may with time escape from its sequestered matrix using alternative sequestration technologies. A method has been developed to prepare stable carbonate products by reacting CO2 with magnesium silicate minerals in aqueous bicarbonate/chloride media at high temperature and pressure. Because this approach is inherently expensive due to slow reaction rates and high capital costs, studies were conducted to improve the reaction rates through mineral pretreatment steps and to cut expenses through improved reactor technology. An overview is given for the estimated cost of the process including sensitivity to grinding and heating as pretreatment options for several mineral feedstocks. The energy costs are evaluated for each pretreatment in terms of net carbon avoided. New studies with a high-temperature, high-pressure flow-loop reactor have yielded information on overcoming kinetic barriers experienced with processing in stirred autoclave reactors. Repeated tests with the flow-loop reactor have yielded insights on wear and failure of system components, on challenges to maintain and measure flow, and for better understanding of the reaction mechanism.

  18. AVTA Federal Fleet PEV Readiness Data Logging and Characterization Study for NASA Stennis Space Center

    SciTech Connect

    Schey, Stephen; Francfort, Jim

    2015-05-01

    Federal agencies are mandated to purchase alternative fuel vehicles, increase consumption of alternative fuels, and reduce petroleum consumption. Available plug-in electric vehicles (PEVs) provide an attractive option in the selection of alternative fuel vehicles. PEVs, which consist of both battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs), have significant advantages over internal combustion engine (ICE) vehicles in terms of energy efficiency, reduced petroleum consumption, and reduced production of greenhouse gas (GHG) emissions, and they provide performance benefits with quieter, smoother operation. This study intended to evaluate the extent to which NASA Stennis Space Center (Stennis) could convert part or all of their fleet of vehicles from petroleum-fueled vehicles to PEVs.

  19. SAID Partial Wave Analyses from CNS DAC (Center for Nuclear Studies Data Analysis Center)

    DOE Data Explorer

    George Washington University (GW) has one of the largest university-based nuclear-physics groups in the nation. Many of the current and future projects are geared to Thomas Jefferson National Accelerator Facility (JLab) at Newport News, VA. JLab is the world's premier electron accelerator for nuclear physics, and GW is one of the charter members of the governing body of JLab, the Southeastern Universities Research Association (SURA). The George Washington Data Analysis Center (DAC) was created in 1998 by an agreement among the Department of Energy, Jefferson Lab, and the GW Center for Nuclear Studies.The activities of the DAC fall into four distinct categories: 1) Performing partial-wave analyses of fundamental two- and three-body reactions; 2) Maintenance of databases associated with these reactions; 3) Development of software to disseminate DAC results (as well as the results of competing model-independent analyses and potential approaches); and 4) Phenomenological and theoretical investigations which bridge the gap between theory and experiment; in particular, the extraction of N* and D * hadronic and electromagnetic couplings. Partial Wave Analyses (and the associated databases) available at GW are: Pion-Nucleon, Kaon-Nucleon, Nucleon-Nucleon, Pion Photoproduction, Pion Electroproduction, Kaon Photoproduction, Eta Photoproduction, Eta-Prime Photoproduction, Pion-Deuteron (elastic), and Pion-Deuteron to Proton+Proton. [Taken from http://www.gwu.edu/~ndl/dac.htm">http://www.gwu.edu/~ndl/dac.htm

  20. Comparison of three options for geologic sequestration of CO2 - a case study for California

    SciTech Connect

    Benson, S.M.

    2000-09-01

    Options for sequestration of CO{sub 2} are best viewed in light of the regional distribution of CO{sub 2} sources and potential sequestration sites. This study examines the distribution of carbon emissions from fossil fuel power plants in California and their proximity to three types of reservoirs that may be suitable for sequestration: (1) active or depleted oil fields, (2) active or depleted gas fields, and (3) brine formations. This paper also presents a preliminary assessment of the feasibility of sequestering CO{sub 2} generated from large fossil-fuel fired power plants in California and discusses the comparative advantages of three different types of reservoirs for this purpose. Based on a volumetric analysis of sequestration capacity and current CO{sub 2} emission rates from oil/gas fired power plants, this analysis suggests that oil reservoirs, gas fields and brine formations can all contribute significantly to sequestration in California. Together they could offer the opportunity to meet both short and long term needs. In the near term, oil and gas reservoirs are the most promising because the trapping structures have already stood the test of time and opportunities for offsetting the cost of sequestration with revenues from enhanced oil and gas production. In the long term, if the trapping mechanisms are adequately understood and deemed adequate, brine formations may provide an even larger capacity for geologic sequestration over much of California.

  1. Using unfolding case studies in a subject-centered classroom.

    PubMed

    Day, Lisa

    2011-08-01

    The recently published report of the Carnegie Foundation's National Study of Nursing Education points out significant problems with classroom teaching in schools of nursing. This article suggests Palmer's idea of the subject-centered classroom as a way to transform nursing school classrooms into collaborative learning communities. For Palmer, the subject is the big idea of nursing practice-the nurse-patient/client/family/community relationship-that should take the lead in stimulating inquiry and discussion. The article goes on to describe how teachers can develop and use unfolding case studies to bring the subject to the center of the classroom. By doing so, the classroom becomes a place where students learn a sense of salience, develop their clinical imagination, and begin their formation as professional nurses.

  2. Asia Pacific Center for Security Studies 2007 Annual Report

    DTIC Science & Technology

    2007-01-01

    PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Asia-Pacific Center for Security Studies,2058 Maluhia Road,Honolulu,HI,96815 8. PERFORMING ORGANIZATION...improv- ing what we contribute have worked diligently to transform systems to meet needs and expectations. 2007 has been a year of refocusing...development of a collaborative international institutional and leadership capacity, and willingness, to addresses complex security-related systems in

  3. Microcomputer Productivity Study for the Naval Training Systems Center.

    DTIC Science & Technology

    1986-12-01

    rctt sd a uiu, art" 88 1 Technical Report 86-028 percent said it benefited them personally . The personal computer was rated by 97 percent of the finance ...IU.0 I~ 1.5U-. 1111 .0 X/? ZK . . % %. NAVAL TRAINING SYSTEMS CENTER ORLANDO. FLORIDA 00T UI FI LE COW" TECHNICAL REPORT 86-028 MICROCOMPUTER...ACKNOWLEDGMENTS Appreciation is expressed to the following persons for their contributions to this study: Thomas 0. Peeples for his assistance in

  4. Decontamination options for Bacillus anthracis-contaminated drinking water determined from spore surrogate studies.

    PubMed

    Raber, Ellen; Burklund, Alison

    2010-10-01

    Five parameters were evaluated with surrogates of Bacillus anthracis spores to determine effective decontamination alternatives for use in a contaminated drinking water supply. The parameters were as follows: (i) type of Bacillus spore surrogate (B. thuringiensis or B. atrophaeus), (ii) spore concentration in suspension (10(2) and 10(6) spores/ml), (iii) chemical characteristics of the decontaminant (sodium dichloro-S-triazinetrione dihydrate [Dichlor], hydrogen peroxide, potassium peroxymonosulfate [Oxone], sodium hypochlorite, and VirkonS), (iv) decontaminant concentration (0.01% to 5%), and (v) exposure time to decontaminant (10 min to 1 h). Results from 138 suspension tests with appropriate controls are reported. Hydrogen peroxide at a concentration of 5% and Dichlor or sodium hypochlorite at a concentration of 2% were highly effective at spore inactivation regardless of spore type tested, spore exposure time, or spore concentration evaluated. This is the first reported study of Dichlor as an effective decontaminant for B. anthracis spore surrogates. Dichlor's desirable characteristics of high oxidation potential, high level of free chlorine, and a more neutral pH than that of other oxidizers evaluated appear to make it an excellent alternative. All three oxidizers were effective against B. atrophaeus spores in meeting the EPA biocide standard of greater than a 6-log kill after a 10-min exposure time and at lower concentrations than typically reported for biocide use. Solutions of 5% VirkonS and Oxone were less effective as decontaminants than other options evaluated in this study and did not meet the EPA's efficacy standard for a biocide, although they were found to be as effective for concentrations of 10(2) spores/ml. Differences in methods and procedures reported by other investigators make quantitative comparisons among studies difficult.

  5. CENTER FOR PULSED POWER DRIVEN HIGH ENERGY DENSITY PLASMA STUDIES

    SciTech Connect

    Professor Bruce R. Kusse; Professor David A. Hammer

    2007-04-18

    This annual report summarizes the activities of the Cornell Center for Pulsed-Power-Driven High-Energy-Density Plasma Studies, for the 12-month period October 1, 2005-September 30, 2006. This period corresponds to the first year of the two-year extension (awarded in October, 2005) to the original 3-year NNSA/DOE Cooperative Agreement with Cornell, DE-FC03-02NA00057. As such, the period covered in this report also corresponds to the fourth year of the (now) 5-year term of the Cooperative Agreement. The participants, in addition to Cornell University, include Imperial College, London (IC), the University of Nevada, Reno (UNR), the University of Rochester (UR), the Weizmann Institute of Science (WSI), and the P.N. Lebedev Physical Institute (LPI), Moscow. A listing of all faculty, technical staff and students, both graduate and undergraduate, who participated in Center research activities during the year in question is given in Appendix A.

  6. Outcomes and satisfaction of two optional cadaveric dissection courses: A 3-year prospective study.

    PubMed

    Pais, Diogo; Casal, Diogo; Mascarenhas-Lemos, Luís; Barata, Pedro; Moxham, Bernard J; Goyri-O'Neill, João

    2017-03-01

    Teaching time dedicated to anatomy education has been reduced at many medical schools around the world, including Nova Medical School in Lisbon, Portugal. In order to minimize the effects of this reduction, the authors introduced two optional, semester-long cadaveric dissection courses for the first two years of the medical school curriculum. These courses were named Regional Anatomy I (RAI) and Regional Anatomy II (RAII). In RAI, students focus on dissecting the thorax, abdomen, pelvis, and perineum. In RAII, the focus shifts to the head, neck, back, and upper and lower limbs. This study prospectively analyzes students' academic achievement and perceptions within the context of these two, newly-introduced, cadaveric dissection courses. Students' satisfaction was assessed anonymously through a questionnaire that included items regarding students' perception of the usefulness of the courses for undergraduate teaching, as well as with regards to future professional activity. For each of the three academic years studied, the final score (1 to 20) in General Anatomy (GA), RAI, and RAII was on average 14.26 ± 1.89; 16.94 ± 1.02; 17.49 ± 1.01, respectively. The mean results were lower in GA than RAI or RAII (P < 0.001). Furthermore, students who undertook these courses ranked them highly with regards to consolidating their knowledge of anatomy, preparing for other undergraduate courses, and training for future clinical practice. These survey data, combined with data on participating students' academic achievement, lend strong support to the adoption of similar courses as complementary and compulsory disciplines in a modern medical curriculum. Anat Sci Educ 10: 127-136. © 2016 American Association of Anatomists.

  7. Space Shuttle orbiter trimmed center-of-gravity extension study

    NASA Technical Reports Server (NTRS)

    Scallion, W. I.; Phillips, W. P.

    1985-01-01

    Aerodynamic, heat transfer, and system design studies to determine removable modifications for the Space Shuttle orbiter that would extend its forward center-of-gravity triom capability are summarized. Wind-tunnel tests were conducted at Mach numbers ranging from 0.25 to 20.3 to determine the most effective aerodynamic modifications. Heat transfer and system design studies determined the impact of the modifications on the thermal protection system and structural weight of the vehicle. The most effective modifications were in-fillet canards or a forward extension of the existing forward wing fillet.

  8. Vegetation studies, National Training Center, Fort Irwin, California

    SciTech Connect

    Brandt, C.A.; Rickard, W.H.; Cadoret, N.A.

    1997-09-01

    During the spring of 1992, the Pacific Northwest National Laboratory (PNNL) conducted surveys of the Avawatz and Granite mountains springs for the National Training Center (NTC) to evaluate the occurrence of sensitive plant species in these areas. PNNL also conducted a survey of the eastern outwash of the Paradise Range for the occurrence of Lane Mountain milk vetch (Astragalus jaegerianus). In spring of 1993, PNNL conducted an additional study of Lane Mountain milk vetch on the NTC to determine habitat characteristics for this plant and to develop a method for predicting its potential occurrence, based on simple habitat attributes. The results of these studies are itemized.

  9. Femtosecond photodichroism studies of isolated photosystem II reaction centers.

    PubMed

    Wiederrecht, G P; Seibert, M; Govindjee; Wasielewski, M R

    1994-09-13

    Photosynthetic conversion of light energy into chemical potential begins in reaction center protein complexes, where rapid charge separation occurs with nearly unit quantum efficiency. Primary charge separation was studied in isolated photosystem II reaction centers from spinach containing 6 chlorophyll a, 2 pheophytin a (Pheo), 1 cytochrome b559, and 2 beta-carotene molecules. Time-resolved pump-probe kinetic spectroscopy was carried out with 105-fs time resolution and with the pump laser polarized parallel, perpendicular, and at the magic angle (54.7 degrees) relative to the polarized probe beam. The time evolution of the transient absorption changes due to the formation of the oxidized primary electron donor P680+ and the reduced primary electron acceptor Pheo- were measured at 820 nm and 545 nm, respectively. In addition, kinetics were obtained at 680 nm, the wavelength ascribed to the Qy transition of the primary electron donor P680 in the reaction center. At each measured probe wavelength the kinetics of the transient absorption changes can be fit to two major kinetic components. The relative amplitudes of these components are strongly dependent on the polarization of the pump beam relative to that of the probe. At the magic angle, where no photoselection occurs, the amplitude of the 3-ps component, which is indicative of the charge separation, dominates. When the primary electron acceptor Pheo is reduced prior to P680 excitation, the 3-ps component is eliminated.

  10. Femtosecond photodischroism studies of isolated photosystem II reaction centers

    SciTech Connect

    Wiederrecht, G.P.; Wasielewski, M.R.; Siebert, M.; Govindjee

    1994-09-13

    Photosynthetic conversion of light energy into chemical potential begins in reaction center protein complexes, where rapid charge separation occurs with nearly unit quantum efficiency. Primary charge separation was studied in isolated photosystem II reaction centers from spinach containing 6 chlorophyll a, 2 pheophytin a (Pheo), 1 cytochrome b{sub 559}, and 2 {beta}-carotene molecules. Time-resolved pump-probe kinetic spectroscopy was carried out with 105-fs time resolution and with the pump laser polarized parallel, perpendicular, and at the magic angle (54.7{degrees}) relative to the polarized probe beam. The time evolution of the oxidized primary electron donor P680{sup +} and the reduced primary electron acceptor Pheo{sup {minus}} were measured at 820 nm and 545 nm, respectively. In addition, kinetics were obtained at 680 nm, the wavelength ascribed to the Q{sub y} transition of the primary electron donor P680 in the reaction center. At each measured probe wavelength the kinetics of the transient absorption changes can be fit to two major kinetic components. The relative amplitudes of these components are strongly dependent on the polarization of the pump beam relative to that of the probe. At the magic angle, where no photoselection occurs, the amplitude of the 3-ps component, which is indicative of the charge separation, dominates. When the primary electron acceptor Pheo is reduced prior to P680 excitation, the 3-ps component is eliminated. 48 refs., 6 figs., 1 tab.

  11. The "None of the Above" Option in Multiple-Choice Testing: An Experimental Study

    ERIC Educational Resources Information Center

    DiBattista, David; Sinnige-Egger, Jo-Anne; Fortuna, Glenda

    2014-01-01

    The authors assessed the effects of using "none of the above" as an option in a 40-item, general-knowledge multiple-choice test administered to undergraduate students. Examinees who selected "none of the above" were given an incentive to write the correct answer to the question posed. Using "none of the above" as the…

  12. A study of space station needs, attributes and architectural options. Volume 1: Executive summary

    NASA Technical Reports Server (NTRS)

    Steinbronn, O.

    1983-01-01

    Missions that will benefit from the development of a permanent manned space station are examined. The missions that will determine the space station architecture include spaceborne scientific experiments, space industrialization and commercialization, remote space operations, and U.S. national security. Architectural options and economic analysis are also presented.

  13. Case study: a data warehouse for an academic medical center.

    PubMed

    Einbinder, J S; Scully, K W; Pates, R D; Schubart, J R; Reynolds, R E

    2001-01-01

    The clinical data repository (CDR) is a frequently updated relational data warehouse that provides users with direct access to detailed, flexible, and rapid retrospective views of clinical, administrative, and financial patient data for the University of Virginia Health System. This article presents a case study of the CDR, detailing its five-year history and focusing on the unique role of data warehousing in an academic medical center. Specifically, the CDR must support multiple missions, including research and education, in addition to administration and management. Users include not only analysts and administrators but clinicians, researchers, and students.

  14. Career options.

    PubMed

    2011-06-24

    Practitioners at all levels can plan their future career options through the NHS Nursing Career Framework interactive tool. The tool builds on the pathway-based framework set out in the post-registration career framework for nurses. Career pathways are outlined under each branch and the specialties within the branches, and cover topics including clinical careers, management and moving into education or research.

  15. Space station needs, attributes and architectural options study. Briefing material, mid-term review

    NASA Technical Reports Server (NTRS)

    1982-01-01

    User mission requirements and their relationship to the current space transportation system are examined as a means of assuring the infusion of corporate ideas and knowledge in the space station program. Specific tasks include developing strategies to develop user consistency; determine DOD implication and requirements; and foster industry involvement in the space station. Mission alternatives; accrued benefits; program options; system attributes and characteristics; and a recommended plan for space station evolution are covered.

  16. Adherence to Antiretroviral Therapy During and After Pregnancy: Cohort Study on Women Receiving Care in Malawi's Option B+ Program

    PubMed Central

    Haas, Andreas D.; Msukwa, Malango T.; Egger, Matthias; Tenthani, Lyson; Tweya, Hannock; Jahn, Andreas; Gadabu, Oliver J.; Tal, Kali; Salazar-Vizcaya, Luisa; Estill, Janne; Spoerri, Adrian; Phiri, Nozgechi; Chimbwandira, Frank; van Oosterhout, Joep J.; Keiser, Olivia

    2016-01-01

    Background. Adherence to antiretroviral therapy (ART) is crucial to preventing mother-to-child transmission of human immunodeficiency virus (HIV) and ensuring the long-term effectiveness of ART, yet data are sparse from African routine care programs on maternal adherence to triple ART. Methods. We analyzed data from women who started ART at 13 large health facilities in Malawi between September 2011 and October 2013. We defined adherence as the percentage of days “covered” by pharmacy claims. Adherence of ≥90% was deemed adequate. We calculated inverse probability of censoring weights to adjust adherence estimates for informative censoring. We used descriptive statistics, survival analysis, and pooled logistic regression to compare adherence between pregnant and breastfeeding women eligible for ART under Option B+, and nonpregnant and nonbreastfeeding women who started ART with low CD4 cell counts or World Health Organization clinical stage 3/4 disease. Results. Adherence was adequate for 73% of the women during pregnancy, for 66% in the first 3 months post partum, and for about 75% during months 4–21 post partum. About 70% of women who started ART during pregnancy and breastfeeding adhered adequately during the first 2 years of ART, but only about 30% of them had maintained adequate adherence at every visit. Risk factors for inadequate adherence included starting ART with an Option B+ indication, at a younger age, or at a district hospital or health center. Conclusions. One-third of women retained in the Option B+ program adhered inadequately during pregnancy and breastfeeding, especially soon after delivery. Effective interventions to improve adherence among women in this program should be implemented. PMID:27461920

  17. Community Involvement: A Case Study of the Education Resource Center.

    ERIC Educational Resources Information Center

    Wilson, Stephen; And Others

    The Education Resource Center (ERC) is a community-based teachers' resource center located in Chicago (Illinois). Its conceptual base is broader than that of a typical teachers center as ERC represents a community-based social movement with a wider orientation than teacher training. ERC's policy board reflects community organizations and the…

  18. An accelerated line-by-line option for MODTRAN combining on-the-fly generation of line center absorption within 0.1 cm-1 bins and pre-computed line tails

    NASA Astrophysics Data System (ADS)

    Berk, Alexander; Conforti, Patrick; Hawes, Fred

    2015-05-01

    A Line-By-Line (LBL) option is being developed for MODTRAN6. The motivation for this development is two-fold. Firstly, when MODTRAN is validated against an independent LBL model, it is difficult to isolate the source of discrepancies. One must verify consistency between pressure, temperature and density profiles, between column density calculations, between continuum and particulate data, between spectral convolution methods, and more. Introducing a LBL option directly within MODTRAN will insure common elements for all calculations other than those used to compute molecular transmittances. The second motivation for the LBL upgrade is that it will enable users to compute high spectral resolution transmittances and radiances for the full range of current MODTRAN applications. In particular, introducing the LBL feature into MODTRAN will enable first-principle calculations of scattered radiances, an option that is often not readily available with LBL models. MODTRAN will compute LBL transmittances within one 0.1 cm-1 spectral bin at a time, marching through the full requested band pass. The LBL algorithm will use the highly accurate, pressure- and temperature-dependent MODTRAN Padé approximant fits of the contribution from line tails to define the absorption from all molecular transitions centered more than 0.05 cm-1 from each 0.1 cm-1 spectral bin. The beauty of this approach is that the on-the-fly computations for each 0.1 cm-1 bin will only require explicit LBL summing of transitions centered within a 0.2 cm-1 spectral region. That is, the contribution from the more distant lines will be pre-computed via the Padé approximants. The status of the LBL effort will be presented. This will include initial thermal and solar radiance calculations, validation calculations, and self-validations of the MODTRAN band model against its own LBL calculations.

  19. Automating the Analytical Laboratories Section, Lewis Research Center, National Aeronautics and Space Administration: A feasibility study

    NASA Technical Reports Server (NTRS)

    Boyle, W. G.; Barton, G. W.

    1979-01-01

    The feasibility of computerized automation of the Analytical Laboratories Section at NASA's Lewis Research Center was considered. Since that laboratory's duties are not routine, the automation goals were set with that in mind. Four instruments were selected as the most likely automation candidates: an atomic absorption spectrophotometer, an emission spectrometer, an X-ray fluorescence spectrometer, and an X-ray diffraction unit. Two options for computer automation were described: a time-shared central computer and a system with microcomputers for each instrument connected to a central computer. A third option, presented for future planning, expands the microcomputer version. Costs and benefits for each option were considered. It was concluded that the microcomputer version best fits the goals and duties of the laboratory and that such an automted system is needed to meet the laboratory's future requirements.

  20. 75 FR 67999 - Notice of Inventory Completion: Anthropological Studies Center, Archaeological Collections...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-04

    ... Completion: Anthropological Studies Center, Archaeological Collections Facility, Sonoma State University... completion of an inventory of human remains in the possession of the Anthropological Studies Center.... A detailed assessment of the human remains was made by the Anthropological Studies...

  1. Reducing between scanner differences in multi-center PET studies.

    PubMed

    Joshi, Aniket; Koeppe, Robert A; Fessler, Jeffrey A

    2009-05-15

    This work is part of the multi-center Alzheimer's Disease Neuroimaging Initiative (ADNI), a large multi-site study of dementia, including patients having mild cognitive impairment (MCI), probable Alzheimer's disease (AD), as well as healthy elderly controls. A major portion of ADNI involves the use of [(18)F]-fluorodeoxyglucose (FDG) with positron emission tomography (PET). The objective of this paper is the reduction of inter-scanner differences in the FDG-PET scans obtained from the 50 participating PET centers having fifteen different scanner models. In spite of a standardized imaging protocol, systematic inter-scanner variability in PET images from various sites is observed primarily due to differences in scanner resolution, reconstruction techniques, and different implementations of scatter and attenuation corrections. Two correction steps were developed by comparison of 3-D Hoffman brain phantom scans with the 'gold standard' digital 3-D Hoffman brain phantom: i) high frequency correction; where a smoothing kernel for each scanner model was estimated to smooth all images to a common resolution and ii) low frequency correction; where smooth affine correction factors were obtained to reduce the attenuation and scatter correction errors. For the phantom data, the high frequency correction reduced the variability by 20%-50% and the low frequency correction further reduced the differences by another 20%-25%. Correction factors obtained from phantom studies were applied to 95 scans from normal control subjects obtained from the participating sites. The high frequency correction reduced differences similar to the phantom studies. However, the low frequency correction did not further reduce differences; hence further refinement of the procedure is necessary.

  2. Life Sciences Division and Center for Human Genome Studies 1994

    SciTech Connect

    Cram, L.S.; Stafford, C.

    1995-09-01

    This report summarizes the research and development activities of the Los Alamos National Laboratory`s Life Sciences Division and the biological aspects of the Center for Human Genome Studies for the calendar year 1994. The technical portion of the report is divided into two parts, (1) selected research highlights and (2) research projects and accomplishments. The research highlights provide a more detailed description of a select set of projects. A technical description of all projects is presented in sufficient detail so that the informed reader will be able to assess the scope and significance of each project. Summaries useful to the casual reader desiring general information have been prepared by the group leaders and appear in each group overview. Investigators on the staff of the Life Sciences Division will be pleased to provide further information.

  3. [Science and society. Guidelines for the Leopoldina Study Center].

    PubMed

    Hacker, Jörg

    2014-01-01

    In order to adequately perform its many diverse tasks as a scholars' society and as the German National Academy of Sciences, the Deutsche Akademie der Naturforscher Leopoldina needs to view itself in a historical context. This can only happen as part of a culture of remembrance which fosters the memory of the Leopoldina's past and subjects this to a critical analysis in the context of the history of science and academies. The newly founded Leopoldina Study Center for the History of Science and Science Academies is to be a forum that pursues established forms of historical research at the Leopoldina, organizes new scientific projects, and presents its findings to the public. The aim is to involve as many Leopoldina members as possible from all of its disciplines, as well as to collaborate with national and international partners.

  4. More options lead to more searching and worse choices in finding partners for romantic relationships online: an experimental study.

    PubMed

    Wu, Pai-Lu; Chiou, Wen-Bin

    2009-06-01

    It is not surprising that the Internet has become a means by which people expand their social networks and form close relationships. Almost every online-dating Web site provides members with search tools. However, do users truly benefit from more complete searches of a large pool of possibilities? The present study, based on the cognitive perspective, examined whether more search options triggered excessive searching, leading to worse choices and poorer selectivity. We argue that more search options lead to less selective processing by reducing users' cognitive resources, distracting them with irrelevant information, and reducing their ability to screen out inferior options. A total of 128 Taiwanese late adolescents and adults with experience in online romantic relationships participated in an experimental study. After entering the characteristics they found desirable in a partner in such a relationship, participants were randomly assigned to receive one of three levels of available profiles. The dependent measures consisted of the number of profiles searched, the average preference difference for all profiles viewed, the preference difference for the chosen profile, and the degree of selectivity. These measures were used to determine whether more attention was devoted to better alternatives and less attention to worse alternatives. The data supported the predictions. Implications and directions for further research are discussed.

  5. Space Operations Center system analysis study extension. Volume 4, book 2: SOC system analysis report

    NASA Technical Reports Server (NTRS)

    1982-01-01

    The Space Operations Center (SOC) orbital space station research missions integration, crew requirements, SOC operations, and configurations are analyzed. Potential research and applications missions and their requirements are described. The capabilities of SOC are compared with user requirements. The SOC/space shuttle and shuttle-derived vehicle flight support operations and SOC orbital operations are described. Module configurations and systems options, SOC/external tank configurations, and configurations for geostationary orbits are described. Crew and systems safety configurations are summarized.

  6. Study of a conceptual nuclear energy center at Green River, Utah. Final summary report

    SciTech Connect

    Williams, J.T.

    1982-09-01

    This document summarizes a conceptual study on the feasibility and practicality of developing a nuclear energy center (NEC) at a representative Western site. The site selected for this conceptual study, an area of about 50 square miles, is located 15 miles south of Green River, Utah. The conceptual NEC would consist of nine nuclear electric generating units, arranged on the site in three clusters of three reactors each (triads), separated by about 2 1/2 miles. Of the total electric output of 11,250 MWe that the NEC could produce, about 82% is assumed to be transmitted out of Utah to Colorado, New Mexico, Arizona, Nevada, and California. The technical engineering issues studied included geology and seismology, plant design, low-level radioactive waste disposal, transmission, and construction schedules and costs. Socioeconomic issues included were demographics, land use, community service needs, and fiscal impacts. Environmental considerations included terrestrial and aquatic ecology, visual impact, and secondary population impacts. Radiological issues were concerned with the safety and risks of an NEC and an on-site low-level waste facility. Institutional issues included methods of ownership, taxation, implications of energy export, and water allocation. The basic finding was that an NEC would be technically feasible, but a number of socioeconomic and institutional issues would require resolution before a Western regional NEC could be considered a viable power plant siting option.

  7. A Planning Study for the Billerica Human Service Center.

    ERIC Educational Resources Information Center

    Boston Coll., Chestnut Hill, MA.

    This document discusses the development and implementation of a multiservice center that could offer a variety of human social services in a single location. The paper focuses on seven components of the center's operation: governance, organizational structure, core services, joint funding, joint planning, joint programming, and evaluation. The…

  8. The Micro Revolution and Information Analysis Centers: A Case Study.

    ERIC Educational Resources Information Center

    Pfuderer, H. A.; Allison, L. J.

    1985-01-01

    Recounts experiences of the Carbon Dioxide Information Center, a technical information analysis center at the Oak Ridge National Laboratory, which has utilized a microcomputer for exchange of automated bibliographic references. Procedures and problems in adding microcomputer information to mainframe databases are noted and other microcomputer…

  9. Space station needs, attributes and architectural options study. Briefing material: Final review and executive summary

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Advantages and disadvantages were assessed for configuration options for a modular 14' diameter space station, a modular aft cargo carrier and a shuttle derived vehicle. Early, intermediate, and mature configurations were defined as well as power requirements, heat rejection, hydrazine usage, and the external scavenging concept. Subsystems were analyzed for propulsion, attitude control, data processing, and communications. Areas of uncertainties, associated costs and benefits, and the cost by phase of the modular and shuttle derived vehicle configurations were identified. Technologies assessed included solar vs nuclear; gravity gradient vs active control; heat pipe radiators vs fluid loops; distributed processors vs centralized, and modular vs shuttle derived configuration. It was determined that the early space station architecture should include: (1) reusable OTV with aerobraking; (2) TMS with telepresence services; (3) OTV/TMS refueling and servicing capability; and (4) attached research laboratories for life sciences and materials processing.

  10. Space station needs, attributes and architectural options study. Briefing material: Final review and executive summary

    NASA Astrophysics Data System (ADS)

    1983-04-01

    Advantages and disadvantages were assessed for configuration options for a modular 14' diameter space station, a modular aft cargo carrier and a shuttle derived vehicle. Early, intermediate, and mature configurations were defined as well as power requirements, heat rejection, hydrazine usage, and the external scavenging concept. Subsystems were analyzed for propulsion, attitude control, data processing, and communications. Areas of uncertainties, associated costs and benefits, and the cost by phase of the modular and shuttle derived vehicle configurations were identified. Technologies assessed included solar vs nuclear; gravity gradient vs active control; heat pipe radiators vs fluid loops; distributed processors vs centralized, and modular vs shuttle derived configuration. It was determined that the early space station architecture should include: (1) reusable OTV with aerobraking; (2) TMS with telepresence services; (3) OTV/TMS refueling and servicing capability; and (4) attached research laboratories for life sciences and materials processing.

  11. A numerical study of the European option by the MLPG method with moving kriging interpolation.

    PubMed

    Phaochoo, P; Luadsong, A; Aschariyaphotha, N

    2016-01-01

    In this paper, the meshless local Petrov-Galerkin (MLPG) method is applied for solving a generalized Black-Scholes equation in financial problems. This equation is a PDE governing the price evolution of a European call or a European put under the Black-Scholes model. The θ-weighted method and MLPG are used for discretizing the governing equation in time variable and option pricing, respectively. We show that the spectral radius of amplification matrix with the discrete operator is less than 1. This ensures that this numerical scheme is stable. Numerical experiments are performed with time varying volatility and the results are compared with the analytical and the numerical results of other methods.

  12. A Titan exploration study: Science, technology and mission planning options, volume 1

    NASA Technical Reports Server (NTRS)

    Tindle, E. L.; Manning, L. A.; Sadin, S. R.; Edsinger, L. E.; Weissman, P. R.; Swenson, B. L.

    1976-01-01

    Mission concepts and technology advancements that can be used in the exploration of the outer planet satellites were examined. Titan, the seventh satellite of Saturn was selected as the target of interest. Science objectives for Titan exploration were identified, and recommended science payloads for four basic mission modes were developed (orbiter, atmospheric probe, surface penetrator and lander). Trial spacecraft and mission designs were produced for the various mission modes. Using these trial designs as a base, technology excursions were then made to find solutions to the problems resulting from these conventional approaches and to uncover new science, technology and mission planning options. Several mission modes were developed that take advantage of the unique conditions expected at Titan. They include a combined orbiter, atmosphere probe and lander vehicle, a combined probe and surface penetrator configuration and concepts for advanced remote sensing orbiters.

  13. Boulder Capture System Design Options for the Asteroid Robotic Redirect Mission Alternate Approach Trade Study

    NASA Technical Reports Server (NTRS)

    Belbin, Scott P.; Merrill, Raymond G.

    2014-01-01

    This paper presents a boulder acquisition and asteroid surface interaction electromechanical concept developed for the Asteroid Robotic Redirect Mission (ARRM) option to capture a free standing boulder on the surface of a 100 m or larger Near Earth Asteroid (NEA). It details the down select process and ranking of potential boulder capture methods, the evolution of a simple yet elegant articulating spaceframe, and ongoing risk reduction and concept refinement efforts. The capture system configuration leverages the spaceframe, heritage manipulators, and a new microspine technology to enable the ARRM boulder capture. While at the NEA it enables attenuation of terminal descent velocity, ascent to escape velocity, boulder collection and restraint. After departure from the NEA it enables, robotic inspection, sample caching, and crew Extra Vehicular Activities (EVA).

  14. Extracorporeal Membrane Oxygenation Outcomes in Acute Respiratory Distress Treatment: Case Study in a Chinese Referral Center.

    PubMed

    Huang, Lei; Li, Tong; Xu, Lei; Hu, Xiao-Min; Duan, Da-Wei; Li, Zhi-Bo; Gao, Xin-Jing; Li, Jun; Wu, Peng; Liu, Ying-Wu

    2017-02-10

    BACKGROUND No definitive conclusions have been drawn from the available data about the utilization of extracorporeal membrane oxygenation (ECMO) to treat severe acute respiratory distress syndrome (ARDS). The aim of this study was to review our center's experience with ECMO and determine predictors of outcome from our Chinese center. MATERIAL AND METHODS We retrospectively analyzed a total of 23 consecutive candidates who fulfilled the study entry criteria between January 2009 and December 2015. Detailed clinical data, ECMO flow, and respiratory parameters before and after the introduction of ECMO were compared among in-hospital survivors and nonsurvivors; factors associated with mortality were investigated. RESULTS Hemodynamics and oxygenation parameters were significantly improved after ECMO initiation. Thirteen patients survived to hospital discharge. Univariate correlation analysis demonstrated that APACHE II score (r=-0.463, p=0.03), acute kidney injury (r=-0.574, p=0.005), membrane oxygenator replacement (r=-0.516, p=0.014) and total length of hospital stay (r=0.526, p=0.012) were significantly correlated with survival to hospital discharge, and that the evolution of the levels of urea nitrogen, platelet, and fibrinogen may help to determine patient prognosis. Sixteen patients referred for ECMO from an outside hospital were successfully transported to our institution by ambulance, including seven transported under ECMO support. The survival rate of the ECMO-transport group was comparable to the conventional transport or the non-transport group (both p=1.000). CONCLUSIONS ECMO is an effective alternative option for severe ARDS. APACHE II score on admission, onset of acute kidney injury, and membrane oxygenator replacement, and the evolution of levels of urea nitrogen, platelet, and fibrinogen during hospitalization may help to determine the in-hospital patient prognosis. By establishing a well-trained mobile ECMO team, a long-distance, inter-hospital transport

  15. Option study of an orthogonal X-ray radiography axis for pRad at LANSCE area C, Los Alamos.

    SciTech Connect

    Oliver, Bryan Velten; Johnson, David L.; Leckbee, Joshua J.; Jones, Peter

    2010-10-01

    We report on an option study of two potential x-ray systems for orthogonal radiography at Area C in the LANSCE facility at Los Alamos National Laboratory. The systems assessed are expected to be near equivalent systems to the presently existing Cygnus capability at the Nevada Test Site. Nominal dose and radiographic resolution of 4 rad (measured at one meter) and 1 mm spot are desired. Both a system study and qualitative design are presented as well as estimated cost and schedule. Each x-ray system analyzed is designed to drive a rod-pinch electron beam diode capable of producing the nominal dose and spot.

  16. NASA Langley Research Center Systems Analysis & Concepts Directorate Participation in the Exploration Systems Architecture Study

    NASA Technical Reports Server (NTRS)

    Keyes, Jennifer; Troutman, Patrick A.; Saucillo, Rudolph; Cirillo, William M.; Cavanaugh, Steve; Stromgren, Chel

    2006-01-01

    The NASA Langley Research Center (LaRC) Systems Analysis & Concepts Directorate (SACD) began studying human exploration missions beyond low Earth orbit (LEO) in the year 1999. This included participation in NASA s Decadal Planning Team (DPT), the NASA Exploration Team (NExT), Space Architect studies and Revolutionary Aerospace Systems Concepts (RASC) architecture studies that were used in formulating the new Vision for Space Exploration. In May of 2005, NASA initiated the Exploration Systems Architecture Study (ESAS). The primary outputs of the ESAS activity were concepts and functional requirements for the Crewed Exploration Vehicle (CEV), its supporting launch vehicle infrastructure and identification of supporting technology requirements and investments. An exploration systems analysis capability has evolved to support these functions in the past and continues to evolve to support anticipated future needs. SACD had significant roles in supporting the ESAS study team. SACD personnel performed the liaison function between the ESAS team and the Shuttle/Station Configuration Options Team (S/SCOT), an agency-wide team charged with using the Space Shuttle to complete the International Space Station (ISS) by the end of Fiscal Year (FY) 2010. The most significant of the identified issues involved the ability of the Space Shuttle system to achieve the desired number of flights in the proposed time frame. SACD with support from the Kennedy Space Center performed analysis showing that, without significant investments in improving the shuttle processing flow, that there was almost no possibility of completing the 28-flight sequence by the end of 2010. SACD performed numerous Lunar Surface Access Module (LSAM) trades to define top level element requirements and establish architecture propellant needs. Configuration trades were conducted to determine the impact of varying degrees of segmentation of the living capabilities of the combined descent stage, ascent stage, and other

  17. Data Information for Global Change Studies: NASA's Distributed Active Archive Centers and Cooperating Data Centers

    NASA Technical Reports Server (NTRS)

    2000-01-01

    The Earth Observing System (EOS) is an integral part of the National Aeronautics and Space Administration's (NASA's) Earth Science Enterprise (ESE). ESE is a long-term global change research program designed to improve our understanding of the Earth's interrelated processes involving the atmosphere, oceans, land surfaces, and polar regions. Data from EOS instruments and other Earth science measurement systems are useful in understanding the causes and processes of global climate change and the consequences of human activities. The EOS Data and Information System (EOSDIS) provides a structure for data management and user services for products derived from EOS satellite instruments and other NASA Earth science data. Within the EOSDIS framework, the Distributed Active Archive Centers (DAACs) have been established to provide expertise in one or more Earth science disciplines. The DAACs and cooperating data centers provide data and information services to support the global change research community. Much of the development of the DAACs has been in anticipation of the enormous amount of data expected from EOS instruments to be launched within the next two decades. Terra, the EOS flagship launched in December 1999, is the first of a series of EOS satellites to carry several instruments with multispectral capabilities. Some data products from these instruments are now available from several of the DAACs. These and other data products can be ordered through the EOS Data Gateway (EDG) and DAAC-specific online ordering systems.

  18. [Recruiting and Personal Development in Surgical Departments of Large Referral Centers - Current Practice and Options for Improvement from Industry and Service Business].

    PubMed

    Homayounfar, K; König, S; Rabe, C; Beck-Broichsitter, B; Lützen, U; Ghadimi, M B; Schmidt, C

    2016-06-23

    Background: Cut-throat competition, cost pressure, generation Y, shortage of qualified staff and feminisation influence human resources management in visceral surgery. The assessment of the current situation by chief surgeons (CS) as well as proof of transferability of strategies from industry and service business (ISB) have not yet been investigated. Material and Methods: The CS of university hospitals and large referral centres (> 800 beds) were interviewed (n = 100) on the basis of a standardised questionnaire including 43 items. Closed questions were designed with a 5-point Likert scale and their analysis was presented as means (MW) and standard deviations (±). Ten human resources manager (HMR) of ISB were invited to participate in 45-minute telephone interviews. Results: Thirty-seven CS participated in the survey, 15 of whom were full professors. Unsolicited applications (100 %), job advertisements (78 %) and direct approaches to final year students (78 %) were the most common ways of recruitment. Only 17 % of CS used a standardised form for preparation. Professional expertise (MW 2.2 ± 0.9), social skills (MW 1.9 ± 0.6) and excellent German language skills (MW 1.8 ± 0.8) were named as important qualifications for employment, while references and certificates were regarded as being less important (MW 3.2 ± 0.9). Personal development was regarded as important (MW 1.1 ± 0.2), but a defined period for residency was not guaranteed (MW 3.0 ± 1.5). Transparent selection criteria for career opportunities (MW 2.5 ± 1.1) and different career models (MW 2.7 ± 1.2) were only rarely available. Six HRM participated in the interviews. Active head-hunting (75 %), Internet platforms (75 %), presentations at conferences (75 %), as well as hiring trainees (50 %), job advertisements (50 %) and social media (50 %) were established options to find qualified employees. Professional and management careers were often

  19. Cognitive and Affective Aspects of Creative Option Generation in Everyday Life Situations

    PubMed Central

    Schweizer, T. Sophie; Schmalenberger, Katja M.; Eisenlohr-Moul, Tory A.; Mojzisch, Andreas; Kaiser, Stefan; Funke, Joachim

    2016-01-01

    Which factors influence a human being’s ability to develop new perspectives and be creative? This ability is pivotal for any context in which new cognitions are required, such as innovative endeavors in science and art, or psychotherapeutic settings. In this article, we seek to bring together two research programs investigating the generation of creative options: On the one hand, research on option generation in the decision-making literature and, on the other hand, cognitive and clinical creativity research. Previous decision-making research has largely neglected the topic of generating creative options. Experiments typically provided participants with a clear set of options to choose from, but everyday life situations are less structured and allow countless ways to react. Before choosing an option, agents have to self-generate a set of options to choose from. Such option generation processes have only recently moved to the center of attention. The present study examines the creative quality of self-generated options in daily life situations. A student sample (N = 48) generated options for action in 70 briefly described everyday life scenarios. We rated the quality of the options on three dimensions of creativity- originality, feasibility, and divergence -and linked these qualities to option generation fluency (speed and number of generated options), situational features like the familiarity and the affective valence of the situation in which the options were generated, and trait measures of cognitive performance. We found that when situations were familiar to the participant, greater negative affective valence of the situation was associated with more originality and divergence of generated options. We also found that a higher option generation fluency was associated with a greater maximal originality of options. We complete our article with a joint research agenda for researchers in the decision-making field focusing on option generation and, on the other hand

  20. The IMS Satellite Situation Center. [International Magnetospheric Study

    NASA Technical Reports Server (NTRS)

    Sugiura, M.; Vette, J. I.

    1977-01-01

    Following a brief historical review of the SSC (Satellite Situation Center), created by the U.S. for the IMS (International Magnetospheric Study), its main functions are discussed. The services of the SSC include the accurate orbit determination of the satellites, 12-18 months in advance and the coordination of simultaneous observations by a multispacecraft system, which are essential for the optimization of the scientific gains from experiments conducted with limited resources. For 1976 SSC generated plots of the satellites Vela 5B, Vela 6A, Vela 6B, Hawkeye 1, Imp H (7), Imp J (8) by computing certain projections of the solar ecliptic, solar magnetospheric, and solar magnetic coordinate systems. The SSC system was automated by the addition of a computer system capable of interactive graphics. The SSC can also provide the ground-based campaigns with a graphical or tabular information about the position low-altitude satellites in any coordinate system. The possible participation of the SSC in future Electrodynamics Explorer mission, Space Shuttle programs is also being explored.

  1. Center for Advanced Energy Studies (CAES) Strategic Plan

    SciTech Connect

    Kevin Kostelnik; Keith Perry

    2007-07-01

    Twenty-first century energy challenges include demand growth, national energy security, and global climate protection. The Center for Advanced Energy Studies (CAES) is a public/private partnership between the State of Idaho and its academic research institutions, the federal government through the U.S. Department of Energy (DOE) and the Idaho National Laboratory (INL) managed by the Battelle Energy Alliance (BEA). CAES serves to advance energy security for our nation by expanding the educational opportunities at the Idaho universities in energy-related areas, creating new capabilities within its member institutions, and delivering technological innovations leading to technology-based economic development for the intermountain region. CAES has developed this strategic plan based on the Balanced Scorecard approach. A Strategy Map (Section 7) summarizes the CAES vision, mission, customers, and strategic objectives. Identified strategic objectives encompass specific outcomes related to three main areas: Research, Education, and Policy. Technical capabilities and critical enablers needed to support these objectives are also identified. This CAES strategic plan aligns with and supports the strategic objectives of the four CAES institutions. Implementation actions are also presented which will be used to monitor progress towards fulfilling these objectives.

  2. Biosphere 2 Center as a unique tool for environmental studies.

    PubMed

    Walter, Achim; Lambrecht, Susanne Carmen

    2004-04-01

    The Biosphere 2 Laboratory of Biosphere 2 Center, Arizona, is a unique, self-contained glasshouse fostering several mesocosms of tropical and subtropical regions on an area of 12,700 m2. It was constructed around 1990 to test whether human life is possible in this completely sealed, self-sustaining artificial ecosystem. Mainly due to overly rich organic soils, the initial mission failed in a spectacular manner that raised enormous disbelief in the scientific seriousness of the project. From 1995 to 2003, the facility had been operated by Columbia University under a completely new scientific management. The aim of the project had then been to conduct research in the field of 'experimental climate change science'. Climatic conditions within the mesocosms can be precisely controlled. In studies with elevated CO2, altered temperature and irrigation regimes performed in the rainforest, coral reef and agriforestry mesocosm, the facility had proven to be a valuable tool for global climate change research. Upon submission of this manuscript, Columbia University is relinquishing the management of this facility now although there was a contract to operate the facility until 2010, leaving it with an unclear destiny that might bring about anything from complete abandonment to a new flowering phase with a new destination.

  3. Study on Venture Capital Investment Risk Avoiding Base on Option Pricing in Agricultural Production and Processing Enterprises

    NASA Astrophysics Data System (ADS)

    Zhang, Xubo

    This paper uses the approaches and models of option theory to analyze two-stage venture capital investment in agricultural production and processing enterprises decision-making under uncertainty. Mathematics expressions of this two-stage venture capital investment decision-making are presented. An option value model about two-stage venture capital investment decision-making base on options pricing theory under the uncertainty is presented. Get the solution of option pricing model which we present.

  4. Identifying the Local Impacts of National ATE Centers on Their Host Institutions: An Exploratory Study

    ERIC Educational Resources Information Center

    Henderson, Charles; Fynewever, Herb; Petcovic, Heather; Bierema, Andrea

    2012-01-01

    The purpose of this study is to identify the local impacts of national advanced technological education (ATE) centers on their host institutions. A sample of three mature, national ATE centers are chosen, with each center serving as a case for a mixed-methods, collective case study research design. Results, drawn from interviews and surveys,…

  5. Studies on nonsense mediated decay reveal novel therapeutic options for genetic diseases.

    PubMed

    Bashyam, Murali D

    2009-01-01

    Scientific breakthroughs have often led to commercially viable patents mainly in the field of engineering. Commercialization in the field of medicine has been restricted mostly to machinery and engineering on the one hand and therapeutic drugs for common chronic ailments such as cough, cold, headache, etc, on the other. Sequencing of the human genome has attracted the attention of pharmaceutical companies and now biotechnology has become a goldmine for commercialization of products and processes. Recent advances in our understanding of basic biological processes have resulted in the opening of new avenues for treatment of human genetic diseases, especially single gene disorders. A significant proportion of human genetic disorders have been shown to be caused due to degradation of transcripts for specific genes through a process called nonsense mediated decay (NMD). The modulation of NMD provides a viable therapeutic option for treatment of several genetic disorders and therefore has been a good prospect for patenting and commercialization. In this review the molecular basis for NMD and attempts to treat genetic diseases which result from NMD are discussed.

  6. Improving Conceptual Design for Launch Vehicles. The Bimese Concept: A Study of Mission and Economic Options

    NASA Technical Reports Server (NTRS)

    Olds, John R.; Tooley, Jeffrey

    1999-01-01

    This report summarizes key activities conducted in the third and final year of the cooperative agreement NCC1-229 entitled "Improving Conceptual Design for Launch Vehicles." This project has been funded by the Vehicle Analysis Branch at NASA's Langley Research Center in Hampton, VA. Work has been performed by the Space Systems Design Lab (SSDL) at the Georgia Institute of Technology, Atlanta, GA. Accomplishments during the first and second years of this project have been previously reported in annual progress reports. This report will focus on the third and final year of the three year activity.

  7. Making the Change: From a Teacher-Centered to a Learner-Centered Environment--A Phenomenological Study

    ERIC Educational Resources Information Center

    Roof, Patty L.

    2012-01-01

    Nursing education is calling for transformation in teaching practices which includes learner-centered environments. The purpose of this qualitative phenomenological study was to explore 15 nursing faculty life experiences as they relate to the choice of a learning environment. Participants expressed their life experiences through interview…

  8. Center Hill Reservoir Fishery Study--Water Level Effects.

    DTIC Science & Technology

    1986-08-01

    The pH and the range of its variations are dependent upon the buffering capacity within a lake . In water containing a bicarbonate in solution, for...WORDS (Continue on reverse aide It noc.esr anidmt ntby block mbi’) Center Hill Lake , TN, Water Levels, Fisheries, Water Quality, Trends. 12A4, C -gvr...water level fluctuation is not a&p~ropriate at Center Hill Lake The graphical analysis of the relationship between the rate of water level change in feet

  9. Mars ISRU for Production of Mission Critical Consumables - Options, Recent Studies, and Current State of the Art

    NASA Technical Reports Server (NTRS)

    Sanders, G. B.; Paz, A.; Oryshchyn, L.; Araghi, K.; Muscatello, A.; Linne, D.; Kleinhenz, J.; Peters, T.

    2015-01-01

    In 1978, a ground breaking paper titled, "Feasibility of Rocket Propellant Production on Mars" by Ash, Dowler, and Varsi discussed how ascent propellants could be manufactured on the Mars surface from carbon dioxide collected from the atmosphere to reduce launch mass. Since then, the concept of making mission critical consumables such as propellants, fuel cell reactants, and life support consumables from local resources, commonly known as In-Situ Resource Utilization (ISRU), for robotic and human missions to Mars has been studied many times. In the late 1990's, NASA initiated a series of Mars Human Design Reference Missions (DRMs), the first of which was released in 1997. These studies primarily focused on evaluating the impact of making propellants on Mars for crew ascent to Mars orbit, but creating large caches of life support consumables (water & oxygen) as a backup for regenerative life support systems for long-duration surface stays (>500 days) was also considered in Mars DRM 3.0. Until science data from the Mars Odyssey orbiter and subsequent robotic missions revealed that water may be widely accessable across the surface of Mars, prior Mars ISRU studies were limited to processing Mars atmospheric resources (carbon dioxide, nitrogen, argon, oxygen, and water vapor). In December 2007, NASA completed the Mars Human Design Reference Architecture (DRA) 5.0 study which considered water on Mars as a potential resource for the first time in a human mission architecture. While knowledge of both water resources on Mars and the hardware required to excavate and extract the water were very preliminary, the study concluded that a significant reduction in mass and significant enhancements to the mission architecture were possible if Mars water resources were utilized. Two subsequent Mars ISRU studies aimed at reexamining ISRU technologies, processing options, and advancements in the state-of-the-art since 2007 and to better understand the volume and packaging associated

  10. The Poynter Center for the Study of Ethics and American Institutions.

    ERIC Educational Resources Information Center

    Granbois, Judith A.

    1994-01-01

    Describes the background and activities of the Poynter Center for the Study of Ethics and American Institutions at Indiana University. Maintains that the center's programs focus on topics such as ethics and the professions, medical ethics, research ethics, and religion and the morality of professions. Provides a list of center publications. (CFR)

  11. 2 Centers for International Studies Fight To Survive Without Federal Funds.

    ERIC Educational Resources Information Center

    Rubin, Amy Magaro

    1997-01-01

    The East-West Center (Hawaii) and North-South Center (Florida) for hemisphere-oriented international studies have lost most federal funding and have had to trim staff, cut programs, and begin solicitation of private support. While lawmakers admit the centers do important work, they feel they are unnecessary and the work could be done elsewhere.…

  12. THE ENGLISH PROGRAM OF THE USOE CURRICULUM STUDY AND DEMONSTRATION CENTER MATERIALS CURRENTLY AVAILABLE.

    ERIC Educational Resources Information Center

    1967

    AFTER FIVE YEARS OF FEDERALLY-SUPPORTED CURRICULUM RESEARCH IN ENGLISH, 14 STUDY CENTERS AND FIVE DEMONSTRATION CENTERS ARE NOW MAKING THE RESULTS OF THEIR WORK AVAILABLE TO THE PUBLIC. THIS PAMPHLET LISTS TITLES OF REPORTS AND INSTRUCTIONAL MATERIALS PREPARED BY THE FOLLOWING CENTERS--(1) CARNEGIE-MELLON UNIVERSITY, (2) TEACHERS COLLEGE, COLUMBIA…

  13. The Center for the Study of Terrestrial and Extraterrestrial Atmospheres (CSTEA)

    NASA Technical Reports Server (NTRS)

    Thorpe, Arthur N.; Morris, Vernon R.

    1997-01-01

    The Center for the Study of Terrestrial and Extraterrestrial Atmospheres (CSTEA) was established in 1992. The center began with 14 active Principal Investigators (PI's). The research of the Center's PIs has, for the most part, continued in the same four areas as presented in the original proposal: Remote Sensing, Atmospheric Chemistry, Sensors and Detectors, and Spacecraft Dynamics.

  14. The Minnesota Project English Center: Selected Materials. Unit 701: Introduction to the Study of Language.

    ERIC Educational Resources Information Center

    Minnesota Univ., Minneapolis. Center for Curriculum Development in English.

    This Minnesota Curriculum Center report recounts the development of teaching materials on the nature and uses of language for grades 7-12 and presents the first of five seventh-grade units. A description of the origins, purposes, and personnel of the Center is followed by brief discussions of (1) the Center's underlying assumption that a study of…

  15. ADVANCED COMPOSITES TECHNOLOGY CASE STUDY AT NASA LANGLEY RESEARCH CENTER

    EPA Science Inventory

    This report summarizes work conducted at the National Aeronautics and Space Administration's Langley Research Center (NASA-LaRC) in Hampton, VA, under the U.S. Environmental Protection Agency’s (EPA) Waste Reduction Evaluations at Federal Sites (WREAFS) Program. Support for...

  16. Evaluative Study of the Neighborhood Information Center Project.

    ERIC Educational Resources Information Center

    Franklin, Hardy R.; Summers, F. William

    The 1972-1974 Neighborhood Information Center (NIC) Project was undertaken in Atlanta, Cleveland, Detroit, Houston, and Queens Borough to demonstrate that urban public libraries could be a vital force in daily living by providing free information and referrals to low income communities, and by adapting in non-traditional ways to meet neighborhood…

  17. Language-Centered Social Studies: A Natural Integration.

    ERIC Educational Resources Information Center

    Barrera, Rosalinda B.; Aleman, Magdalena

    1983-01-01

    Described is a newspaper project in which elementary students report life as it was in the Middle Ages. Students are involved in a variety of language-centered activities. For example, they gather and evaluate information about medieval times and write, edit, and proofread articles for the newspaper. (RM)

  18. Asia-Pacific Center for Security Studies Annual Report 2008

    DTIC Science & Technology

    2008-01-01

    reducing system interdiction risks, and educa- tional technology upgrades permeate all learning spaces within the Center, as well as at the condominium ...analy- ses – in some cases reducing cycle- times from days to minutes. EKMS will be comprised of a suite of modern software applications that will

  19. Centers for Catholic Studies and the Public Voice of Religion

    ERIC Educational Resources Information Center

    Brigham, Erin

    2011-01-01

    This article explores debates about the public role of religion in a secular context. Drawing on the work of critical theorist, Jurgen Habermas, this article claims that the United States requires a viable public sphere in which religious and secular voices can learn from each other. Highlighting the work of the Lane Center for Catholic Studies…

  20. Really Useful Knowledge: A Cultural Studies Agenda for Writing Centers.

    ERIC Educational Resources Information Center

    Cooper, Marilyn M.

    1994-01-01

    Argues that writing centers have the essential function of critiquing institutions and creating knowledge about writing. Explains how this function has clear implications for what tutors should know and how they should be trained. Enlists Antonio Gramsci's theory of culture to analyze traditional composition teaching and research. (HB)

  1. Case Study: Randolph County Vocational Technical Center, Elkins, W. Va.

    ERIC Educational Resources Information Center

    Southern Regional Education Board, Atlanta, GA.

    Randolph County Vocational Technical Center, Elkins, West Virginia, received a grant in 1997 for a project that was part of the High Schools That Work (HSTW) initiative to improve academic skills of career-bound students. The superintendent and faculty knew that improving achievement meant reaching out to the three home high schools to bring them…

  2. Peak load management: Potential options

    SciTech Connect

    Englin, J.E.; De Steese, J.G.; Schultz, R.W.; Kellogg, M.A.

    1989-10-01

    This report reviews options that may be alternatives to transmission construction (ATT) applicable both generally and at specific locations in the service area of the Bonneville Power Administration (BPA). Some of these options have potential as specific alternatives to the Shelton-Fairmount 230-kV Reinforcement Project, which is the focus of this study. A listing of 31 peak load management (PLM) options is included. Estimated costs and normalized hourly load shapes, corresponding to the respective base load and controlled load cases, are considered for 15 of the above options. A summary page is presented for each of these options, grouped with respect to its applicability in the residential, commercial, industrial, and agricultural sectors. The report contains comments on PLM measures for which load shape management characteristics are not yet available. These comments address the potential relevance of the options and the possible difficulty that may be encountered in characterizing their value should be of interest in this investigation. The report also identifies options that could improve the efficiency of the three customer utility distribution systems supplied by the Shelton-Fairmount Reinforcement Project. Potential cogeneration options in the Olympic Peninsula are also discussed. These discussions focus on the options that appear to be most promising on the Olympic Peninsula. Finally, a short list of options is recommended for investigation in the next phase of this study. 9 refs., 24 tabs.

  3. A Study to Determine a Methodology for Establishing a Center of Excellence Program at Fitzsimons Army Medical Center.

    DTIC Science & Technology

    1992-01-10

    cardiovascular disease is one method that Fitzsimons Army Medical Center can pursue...center of excellence program in cardiovascular disease . The development of specific criteria required for implementation of a cardiovascular center of...treatment capabilities at the Army medical centers.... Center of excellence, Specialized treatment facilities, Cardiovascular disease program criteria, Patient referral process, Aeromedical evacuation system, Graduate medical

  4. Impact of Pediatric Chronic Dialysis on Long-Term Patient Outcome: Single Center Study

    PubMed Central

    Krause, Irit; Dagan, Amit; Cleper, Roxana; Falush, Yafa; Davidovits, Miriam

    2016-01-01

    Objective. Owing to a shortage of kidney donors in Israel, children with end-stage renal disease (ESRD) may stay on maintenance dialysis for a considerable time, placing them at a significant risk. The aim of this study was to understand the causes of mortality. Study Design. Clinical data were collected retrospectively from the files of children on chronic dialysis (>3 months) during the years 1995–2013 at a single pediatric medical center. Results. 110 patients were enrolled in the study. Mean age was 10.7 ± 5.27 yrs. (range: 1 month–24 yrs). Forty-five children (42%) had dysplastic kidneys and 19 (17.5%) had focal segmental glomerulosclerosis. Twenty-five (22.7%) received peritoneal dialysis, 59 (53.6%) hemodialysis, and 6 (23.6%) both modalities sequentially. Median dialysis duration was 1.46 years (range: 0.25–17.54 years). Mean follow-up was 13.5 ± 5.84 yrs. Seventy-nine patients (71.8%) underwent successful transplantation, 10 (11.2%) had graft failure, and 8 (7.3%) continued dialysis without transplantation. Twelve patients (10.9%) died: 8 of dialysis-associated complications and 4 of their primary illness. The 5-year survival rate was 84%: 90% for patients older than 5 years and 61% for younger patients. Conclusions. Chronic dialysis is a suitable temporary option for children awaiting renal transplantation. Although overall long-term survival rate is high, very young children are at high risk for life-threatening dialysis-associated complications. PMID:27597898

  5. A study of the remote neighborhood office center concept

    NASA Technical Reports Server (NTRS)

    1976-01-01

    The substitution of communications for commuting to work is examined from several aspects. Attention is focused on the possibility of certain groups of white collar workers conducting their business affairs through a network of Remote Neighborhood Office Centers (RNOC's) located near their homes. Typically, employees would communicate with their headquarters organizations by means of voice and digital circuits. Although current technology is readily able to support such an RNOC network, the main problems confronting would-be implementers center around the need for demonstrating that a sufficient number of business operations can be carried out in such a decentralized configuration as efficiently as they are under more conventional circumstances. The description of a pilot program is presented which is intended to identify pacing issues that must be settled before firm conclusions can be reached on whether the concept is operationally viable.

  6. Energy use baselining study for the National Naval Medical Center

    SciTech Connect

    Parker, G.B.; Halverson, M.A.

    1992-04-01

    This report provides an energy consumption profile for fourteen buildings at the National Naval Medical Center (NNMC) in Bethesda, Maryland. Recommendations are also made for viable energy efficiency projects funded with assistance from the servicing utility (Potomic Electric Power Company) in the form of rebates and incentives available in their Demand Side Management (DSM) program and through Shared Energy Savings (SES) projects. This report also provides estimates of costs and potential energy savings of the recommended projects.

  7. Research and Development Support for the Center for Seismic Studies.

    DTIC Science & Technology

    1984-07-15

    Terminal Description (RST) *6.0 Input Data Sources 6.1 Introduction 6.2 Data from Regional Seismic Test Network ( RSTN ) 6.3 Waveform Data from Global...objectives for which it was designed. These accomplishments are summarized below. (1) The signals received at the Center from the five RSTN stations were...presented in Appendix B. 4P Types of help information to be provided with each item: Description (purpose) of item (executive overview) How to access

  8. Herbicide Orange Site Characterization Study Naval Construction Battalion Center

    DTIC Science & Technology

    1987-01-01

    revrs if necU~ary and identify by block muenbers IELD GROUP sue, GR. Herbicide Orange) -2,4-D’ Analytical Methods) 1 ,ni IDioxin Soil Samli~ 3*3TRACT...THIS PAGE Cont-mination levels ranged between rordetectable and approximately 200 ppb. Average values were below 10 ppt in surface soils and...analysis of a soil sampling program performed at the former Herbicide Orange storage site on the Naval Construction Battalion Center. Over 1700 soil

  9. Miami-Dade Community College 1984 Institutional Self-Study. Volume VIII: Medical Center Campus Studies.

    ERIC Educational Resources Information Center

    Miami-Dade Community Coll., FL.

    Part of a systematic, in-depth assessment of Miami-Dade Community College's (MDCC's) educational programs, student support systems, and selected campus-level activities, this volume of the college's institutional self-study report examines the impact and effectiveness of the Medical Center Campus. The report contains the results of a campus study…

  10. Extracorporeal Membrane Oxygenation Outcomes in Acute Respiratory Distress Treatment: Case Study in a Chinese Referral Center

    PubMed Central

    Huang, Lei; Li, Tong; Xu, Lei; Hu, Xiao-min; Duan, Da-wei; Li, Zhi-bo; Gao, Xin-jing; Li, Jun; Wu, Peng; Liu, Ying-Wu

    2017-01-01

    Background No definitive conclusions have been drawn from the available data about the utilization of extracorporeal membrane oxygenation (ECMO) to treat severe acute respiratory distress syndrome (ARDS). The aim of this study was to review our center’s experience with ECMO and determine predictors of outcome from our Chinese center. Material/Methods We retrospectively analyzed a total of 23 consecutive candidates who fulfilled the study entry criteria between January 2009 and December 2015. Detailed clinical data, ECMO flow, and respiratory parameters before and after the introduction of ECMO were compared among in-hospital survivors and nonsurvivors; factors associated with mortality were investigated. Results Hemodynamics and oxygenation parameters were significantly improved after ECMO initiation. Thirteen patients survived to hospital discharge. Univariate correlation analysis demonstrated that APACHE II score (r=−0.463, p=0.03), acute kidney injury (r=−0.574, p=0.005), membrane oxygenator replacement (r=−0.516, p=0.014) and total length of hospital stay (r=0.526, p=0.012) were significantly correlated with survival to hospital discharge, and that the evolution of the levels of urea nitrogen, platelet, and fibrinogen may help to determine patient prognosis. Sixteen patients referred for ECMO from an outside hospital were successfully transported to our institution by ambulance, including seven transported under ECMO support. The survival rate of the ECMO-transport group was comparable to the conventional transport or the non-transport group (both p=1.000). Conclusions ECMO is an effective alternative option for severe ARDS. APACHE II score on admission, onset of acute kidney injury, and membrane oxygenator replacement, and the evolution of levels of urea nitrogen, platelet, and fibrinogen during hospitalization may help to determine the in-hospital patient prognosis. By establishing a well-trained mobile ECMO team, a long-distance, inter

  11. Options of sustainable groundwater supply from safe aquifers in areas with elevated arsenic - a case study from Bangladesh

    NASA Astrophysics Data System (ADS)

    Jakariya, M.; Bhattacharya, P.; Bromssen, M. V.

    2008-05-01

    Access to safe drinking water is a basic human right. Several millions of people, mainly in developing countries are affected by arsenic in drinking water and the global impact now makes it a top priority water quality issue. A wide gap between the number of exposed people and the pace of mitigation programmes in rural areas of developing countries is the main problem in providing safe drinking water. The main challenge is to develop a sustainable mitigation option that rural and disadvantaged people can adopt and implement themselves to overcome possible public heath hazards. During the recent years, new approaches have emerged in Bangladesh, primarily emerging out of people's own initiative. The local drillers target presumed safe aquifers on the basis of colour and texture of the sediments. A recent study by our research group revealed a distinct correlation between the colour characteristics of the sediments and the groundwater redox conditions. The coupling between the colour of sediments and the redox characteristics of groundwater may thus be used as a tool to assess the risk for As mobilization from the aquifers. The study showed that it is possible to assess the relative risk of high concentrations of As in aquifers if the colour characteristics of the sediments are known and thus, local drillers may target safe aquifers. For validating the sustainability of this mitigation option geological, hydrogeological and microbiological investigations are needed. The sustainability of the aquifers needs to be assessed by combining results from various field and laboratory investigations and by running predictive models. There is also a need to raise the awareness and thereby create a platform for motivating the local drillers to be educated in installing safe tubewells. Awareness raising and community mobilisation are two top priorities for implementing a sustainable safe water project in rural village areas. Significant preparation, attention, and focus must be

  12. Addressing underutilization of consumer health information resource centers: a formative study*

    PubMed Central

    Kennedy, May G.; Kiken, Laura; Shipman, Jean P.

    2008-01-01

    Problem: Four consumer health information centers in Richmond, Virginia, provide one-on-one assistance in accessing health information. Because they may not be fully utilized at present, an exploratory marketing study of factors affecting usage of the centers was conducted. Method: Observers counted center passers-by and tracked their paths. Also, brief intercept interviews were conducted with people who had just used a center, people nearby who could have used one but did not, and people on the street. Finally, in-depth individual interviews were conducted with key informants. Results: There was a high degree of satisfaction with the centers among users. Nonusers universally endorsed the center concept. However, most passers-by did not even glance at the centers, and intercept interviewees suggested better signage and promoting the resource centers through various media channels. Key informants added suggestions about interpersonal strategies (e.g., physician referrals) for center usage promotion but cautioned that a large increase in traffic could not be accommodated without increasing staff size or shifting from a model of individualized service. Conclusions: Triangulating findings from multiple data collection methods can provide useful guidance for efforts to promote center utilization. At minimum, steps should be taken to make the largest centers more noticeable. Because center utilization is not only associated with consumer satisfaction with hospitals, but may also foster health literacy, both hospital-based and community-based usage promotion strategies may be warranted. All such promotional strategies should be audience-tested before they are adopted. PMID:18219380

  13. A Case Study Documenting the Process by Which Biology Instructors Transition from Teacher-Centered to Learner-Centered Teaching.

    PubMed

    Marbach-Ad, Gili; Hunt Rietschel, Carly

    2016-01-01

    In this study, we used a case study approach to obtain an in-depth understanding of the change process of two university instructors who were involved with redesigning a biology course. Given the hesitancy of many biology instructors to adopt evidence-based, learner-centered teaching methods, there is a critical need to understand how biology instructors transition from teacher-centered (i.e., lecture-based) instruction to teaching that focuses on the students. Using the innovation-decision model for change, we explored the motivation, decision-making, and reflective processes of the two instructors through two consecutive, large-enrollment biology course offerings. Our data reveal that the change process is somewhat unpredictable, requiring patience and persistence during inevitable challenges that arise for instructors and students. For example, the change process requires instructors to adopt a teacher-facilitator role as opposed to an expert role, to cover fewer course topics in greater depth, and to give students a degree of control over their own learning. Students must adjust to taking responsibility for their own learning, working collaboratively, and relinquishing the anonymity afforded by lecture-based teaching. We suggest implications for instructors wishing to change their teaching and administrators wishing to encourage adoption of learner-centered teaching at their institutions.

  14. A Case Study Documenting the Process by Which Biology Instructors Transition from Teacher-Centered to Learner-Centered Teaching

    PubMed Central

    Marbach-Ad, Gili; Hunt Rietschel, Carly

    2016-01-01

    In this study, we used a case study approach to obtain an in-depth understanding of the change process of two university instructors who were involved with redesigning a biology course. Given the hesitancy of many biology instructors to adopt evidence-based, learner-centered teaching methods, there is a critical need to understand how biology instructors transition from teacher-centered (i.e., lecture-based) instruction to teaching that focuses on the students. Using the innovation-decision model for change, we explored the motivation, decision-making, and reflective processes of the two instructors through two consecutive, large-enrollment biology course offerings. Our data reveal that the change process is somewhat unpredictable, requiring patience and persistence during inevitable challenges that arise for instructors and students. For example, the change process requires instructors to adopt a teacher-facilitator role as opposed to an expert role, to cover fewer course topics in greater depth, and to give students a degree of control over their own learning. Students must adjust to taking responsibility for their own learning, working collaboratively, and relinquishing the anonymity afforded by lecture-based teaching. We suggest implications for instructors wishing to change their teaching and administrators wishing to encourage adoption of learner-centered teaching at their institutions. PMID:27856550

  15. Space Station redesign option A: Modular buildup concept

    NASA Technical Reports Server (NTRS)

    1993-01-01

    In early 1993, President Clinton mandated that NASA look at lower cost alternatives to Space Station Freedom. He also established an independent advisory committee - the Blue Ribbon Panel - to review the redesign work and evaluate alternatives. Daniel Goldin, NASA Administrator, established a Station Redesign Team that began operating in late March from Crystal City, Virginia. NASA intercenter teams - one each at Marshall Space Flight Center, Johnson Space Center, and Langley Research Center provided engineering and other support. The results of the Option A study done at Marshall Space Flight Center are summarized. Two configurations (A-1 and A-2) are covered. Additional data is provided in the briefing package MSFC SRT-001, Final System Review to SRT-002, Space Station Option A Modular Buildup Concept, Volumes 1-5, Revision B, June 10, 1993. In June 1993, President Clinton decided to proceed with a modular concept consistent with Option A, and asked NASA to provide an Implementation Plan by September. All data from the Option A redesign activity was provided to NASA's Transition Team for use in developing the Implementation Plan.

  16. A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study.

    SciTech Connect

    Bull, Diana L; Fowler, Matthew; Goupee, Andrew

    2014-08-01

    This analysis utilizes a 5 - MW VAWT topside design envelope created by Sandia National Laborator ies to compare floating platform options fo r each turbine in the design space. The platform designs are based on two existing designs, the OC3 Hywind spar - buoy and Principal Power's WindFloat semi - submersible. These designs are scaled using Froude - scaling relationships to determine an appropriately sized spar - buoy and semi - submersible design for each topside. Both the physical size of the required platform as well as mooring configurations are considered. Results are compared with a comparable 5 - MW HAWT in order to identify potential differences in the platform and mooring sizing between the VAWT and HAWT . The study shows that there is potential for cost savings due to reduced platform size requirements for the VAWT.

  17. Option price and market instability

    NASA Astrophysics Data System (ADS)

    Baaquie, Belal E.; Yu, Miao

    2017-04-01

    An option pricing formula, for which the price of an option depends on both the value of the underlying security as well as the velocity of the security, has been proposed in Baaquie and Yang (2014). The FX (foreign exchange) options price was empirically studied in Baaquie et al., (2014), and it was found that the model in general provides an excellent fit for all strike prices with a fixed model parameters-unlike the Black-Scholes option price Hull and White (1987) that requires the empirically determined implied volatility surface to fit the option data. The option price proposed in Baaquie and Cao Yang (2014) did not fit the data during the crisis of 2007-2008. We make a hypothesis that the failure of the option price to fit data is an indication of the market's large deviation from its near equilibrium behavior due to the market's instability. Furthermore, our indicator of market's instability is shown to be more accurate than the option's observed volatility. The market prices of the FX option for various currencies are studied in the light of our hypothesis.

  18. Fusion Centers: Issues and Options for Congress

    DTIC Science & Technology

    2007-07-06

    local law enforcement that “...revealed a Canadian-based organization supplying precursor chemicals to Mexican methamphetamine producers was in fact a...known gaps. Step 4 includes synthesis and CRS-90 analysis of collected intelligence and results in the creation of an intelligence product, which in

  19. Fusion Centers: Issues and Options for Congress

    DTIC Science & Technology

    2008-01-18

    to Mexican methamphetamine producers was in fact a Hezbollah support cell.” A second case involved a local law enforcement investigation in Torrance...gaps in existing knowledge, and which is followed by Step 3 - the collection of intelligence based on known gaps. Step 4 includes synthesis and CRS

  20. User-centered semantic harmonization: a case study.

    PubMed

    Weng, Chunhua; Gennari, John H; Fridsma, Douglas B

    2007-06-01

    Semantic interoperability is one of the great challenges in biomedical informatics. Methods such as ontology alignment or use of metadata neither scale nor fundamentally alleviate semantic heterogeneity among information sources. In the context of the Cancer Biomedical Informatics Grid program, the Biomedical Research Integrated Domain Group (BRIDG) has been making an ambitious effort to harmonize existing information models for clinical research from a variety of sources and modeling agreed-upon semantics shared by the technical harmonization committee and the developers of these models. This paper provides some observations on this user-centered semantic harmonization effort and its inherent technical and social challenges. The authors also compare BRIDG with related efforts to achieve semantic interoperability in healthcare, including UMLS, InterMed, the Semantic Web, and the Ontology for Biomedical Investigations initiative. The BRIDG project demonstrates the feasibility of user-centered collaborative domain modeling as an approach to semantic harmonization, but also highlights a number of technology gaps in support of collaborative semantic harmonization that remain to be filled.

  1. Classroom Learning Communities in Educational Leadership: A Comparison Study of Three Delivery Options

    ERIC Educational Resources Information Center

    Ritter, Carol; Polnick, Barbara; Fink, Raymond, II; Oescher, Jeffery

    2010-01-01

    In this study the authors investigated the perceptions of educational leadership graduate students with regard to how well their face-to-face, online and hybrid classes built a sense of classroom community. Perceptions were measured using the Classroom Community Scale (CCS), which included three measures: total classroom community, connectedness,…

  2. Space station needs, attributes and architectural options study. Volume 2: Mission analysis

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Space environment studies, astrophysics, Earth environment, life sciences, and material sciences are discussed. Commercial communication, materials processing, and Earth observation missions are addressed. Technology development, space operations, scenarios of operational capability, mission requirements, and benefits analysis results for space-produced gallium arsenide crystals, direct broadcasting satellite systems, and a high inclination space station are covered.

  3. Costs and Policy Options for Federal Student Loan Programs. A CBO Study

    ERIC Educational Resources Information Center

    Lucas, Deborah; Moore, Damien

    2010-01-01

    The Department of Education oversees various programs to help students pay for the costs of postsecondary education. This Congressional Budget Office (CBO) study focuses on the two largest student loan programs created under the authority of the Higher Education Act of 1965 (as amended): (1) The Federal Family Education Loan (FFEL) program, which…

  4. An Experiment in ''Less Time, More Options": A Study of Accelerated University Students.

    ERIC Educational Resources Information Center

    Litwin, James L.; And Others

    This study investigated the characteristics and experiences of 59 college students accelerated from their freshman to their junior year. The students showed high academic performance and few social problems, but questions of personal identity remained problematic; the best single predictor of academic success was found to be freshman grade-point…

  5. Study on partitioning and transmutation as a possible option for spent fuel management within a nuclear phase-out scenario

    SciTech Connect

    Fazion, C.; Rineiski, A.; Salvatores, M.; Schwenk-Ferrero, A.; Romanello, V.; Vezzoni, B.; Gabrielli, F.

    2013-07-01

    Most Partitioning and Transmutation (PT) studies implicitly presuppose the continuous use of nuclear energy. In this case the development of new facilities or the modification of the fuel cycle can be justified in the long-term as an important feature in order to improve sustainability by minimizing radioactive waste and reducing the burden at waste disposal. In the case of a country with nuclear energy phase-out policy, the PT option might have also an important role for what concerns the final disposal strategies of the spent fuel. In this work three selected scenarios are analyzed in order to assess the impact of PT implementation in a nuclear energy phase out option. The scenarios are: -) Scenario 1: Identification of Research/Development activities needs for a technological development of PT while postponing the decision of PT implementation; -) Scenario 2: Isolated application of PT in a phase-out context; and -) Scenario 3: Implementation of PT in a European context. In order to facilitate the discrimination among the 3 scenarios, a number of figures of indicators have been evaluated for each scenario. The selected indicators are: the mass of High Level Waste (HLW), Uranium inventory, thermal output of HLW, Radiotoxicity, Fuel cycle secondary waste associated to the PT operation, and Facility capacity/number requirements. The reduction, due to PT implementation, of high level wastes masses and their associated volumes can be significant. For what concerns the thermal output and radiotoxicity a significant impact can be also expected. However, when assessing these two indicators the contribution coming from already vitrified waste should also not be neglected. Moreover, an increase of secondary waste inventory is also expected. On the contrary, the increase of fission product inventories due to the operation of the transmutation system has a relatively limited impact on the fuel cycle.

  6. Structural studies of iron and manganese in photosynthetic reaction centers

    SciTech Connect

    McDermott, A.E.

    1987-11-01

    Electron paramagnetic resonance (EPR) and x-ray absorption spectroscopy (XAS) were used to characterize components involved in the light reactions of photosynthetic reaction centers from spinach and a thermophilic cyanobacterium, Synechococcus sp.: center X, the low electron potential acceptor in Photosystem I (PS I) and the Mn complex involved in water oxidation and oxygen evolution. The dependence of its EPR amplitude on microwave power and temperature indicate an Orbach spin relaxation mechanism involving an excited state at 40 cm/sup -1/. This low energy contributes to its unusually anisotropic g-tensor. XAS of iron in PS I preparations containing ferredoxins A, B and X are consistent with a model with (4Fe-4S) ferredoxins, which are presumably centers A and B and (2Fe-2S) ferredoxins, which would be X. Illumination of dark-adapted Synechococcus PS II samples at 220 to 240 K results in the formation of the multiline EPR signal previously assigned as a Mn S/sub 2/ species, and g = 1.8 and 1.9 signals of Fe/sup 2 +/ Q/sub A//sup -/. In contrast to spinach, illumination at 110 to 160 K produces only a new EPR signal at g = 1.6 which we assign to another configuration of Fe/sup 2+ - Q/sup -/. Following illumination of a S/sub 1/ sample at 140 K or 215 K, the Mn x-ray absorption edge inflection energy changes from 6550 eV to 6551 eV, indicating an oxidation of Mn, and average valences greater than Mn(II). Concomitant changes in the shape of the pre-edge spectrum indicate oxidation of Mn(III) to Mn(IV). The Mn EXAFS spectrum of PS II from Synechococcus is similar in the S/sub 1/ and S/sub 2/ states, indicating O or N ligands at 1.75 +- 0.05 A, transition metal neighbor(s) at 2.75 +- 0.05 A, and N and O ligands at 2.2 A with heterogeneous bond lengths; these data demonstrate the presence of a di-..mu..-oxo bridged Mn structure. 202 refs., 40 figs., 7 tabs.

  7. Space operations center: Shuttle interaction study extension, executive summary

    NASA Technical Reports Server (NTRS)

    1982-01-01

    The Space Operations Center (SOC) is conceived as a permanent facility in low Earth orbit incorporating capabilities for space systems construction; space vehicle assembly, launching, recovery and servicing; and the servicing of co-orbiting satellites. The Shuttle Transportation System is an integral element of the SOC concept. It will transport the various elements of the SOC into space and support the assembly operation. Subsequently, it will regularly service the SOC with crew rotations, crew supplies, construction materials, construction equipment and components, space vehicle elements, and propellants and spare parts. The implications to the SOC as a consequence of the Shuttle supporting operations are analyzed. Programmatic influences associated with propellant deliveries, spacecraft servicing, and total shuttle flight operations are addressed.

  8. Space Operations Center, shuttle interaction study, volume 1

    NASA Technical Reports Server (NTRS)

    1981-01-01

    The feasibility of the shuttle remote manipulator system (SRMS)-aided space operations center (SOC)/orbiter berthing was evaluated to determine: (1) whether the initial rates between the SOC and the orbiter can be removed by the arm; (2) what is the best strategy to be used; (3) whether the post-capture and maneuvering loads are within the capability of the SRMS; (4) can the SOC berthing port be brought in the immediate proximity of the orbiter berthing port; and (5) what is the best way to remove the residual relative motions. Various notational conventions are established and various important locations on the orbiter and SOC structures are defined. Reference frames are defined together with the mass properties of both the SOC and the orbiter.

  9. Default options in advance directives: study protocol for a randomised clinical trial

    PubMed Central

    Gabler, Nicole B; Cooney, Elizabeth; Small, Dylan S; Troxel, Andrea B; Arnold, Robert M; White, Douglas B; Angus, Derek C; Loewenstein, George; Volpp, Kevin G; Bryce, Cindy L; Halpern, Scott D

    2016-01-01

    Introduction Although most seriously ill Americans wish to avoid burdensome and aggressive care at the end of life, such care is often provided unless patients or family members specifically request otherwise. Advance directives (ADs) were created to provide opportunities to set limits on aggressive care near life's end. This study tests the hypothesis that redesigning ADs such that comfort-oriented care is provided as the default, rather than requiring patients to actively choose it, will promote better patient-centred outcomes. Methods and analysis This multicentre trial randomises seriously ill adults to receive 1 of 3 different ADs: (1) a traditional AD that requires patients to actively choose their goals of care or preferences for specific interventions (eg, feeding tube insertion) or otherwise have their care guided by their surrogates and the prevailing societal default toward aggressive care; (2) an AD that defaults to life-extending care and receipt of life-sustaining interventions, enabling patients to opt out from such care; or (3) an AD that defaults to comfort care, enabling patients to opt into life-extending care. We seek to enrol 270 patients who return complete, legally valid ADs so as to generate sufficient power to detect differences in the primary outcome of hospital-free days (days alive and not in an acute care facility). Secondary outcomes include hospital and intensive care unit admissions, costs of care, hospice usage, decision conflict and satisfaction, quality of life, concordance of preferences with care received and bereavement outcomes for surrogates of patients who die. Ethics and dissemination This study has been approved by the Institutional Review Boards at all trial centres, and is guided by a data safety and monitoring board and an ethics advisory board. Study results will be disseminated using methods that describe the results in ways that key stakeholders can best understand and implement. Trial registration number NCT02017548

  10. Miscellaneous: Uruguay energy supply options study assessing the market for natural gas - executive summary.

    SciTech Connect

    Conzelmann, G.; Veselka, T.; Decision and Information Sciences

    2008-03-04

    Uruguay is in the midst of making critical decisions affecting the design of its future energy supply system. Momentum for change is expected to come from several directions, including recent and foreseeable upgrades and modifications to energy conversion facilities, the importation of natural gas from Argentina, the possibility for a stronger interconnection of regional electricity systems, the country's membership in MERCOSUR, and the potential for energy sector reforms by the Government of Uruguay. The objective of this study is to analyze the effects of several fuel diversification strategies on Uruguay's energy supply system. The analysis pays special attention to fuel substitution trends due to potential imports of natural gas via a gas pipeline from Argentina and increasing electricity ties with neighboring countries. The Government of Uruguay has contracted with Argonne National Laboratory (ANL) to study several energy development scenarios with the support of several Uruguayan institutions. Specifically, ANL was asked to conduct a detailed energy supply and demand analysis, develop energy demand projections based on an analysis of past energy demand patterns with support from local institutions, evaluate the effects of potential natural gas imports and electricity exchanges, and determine the market penetration of natural gas under various scenarios.

  11. The Woodlands Metro Center energy study. Case studies of project planning and design for energy conservation

    SciTech Connect

    Not Available

    1980-03-01

    The Woodlands is a HUD Title VII New Town located near Houston, including 22,000 acres; the plan for the new town consists of 6 residential villages, a town center (Metro), and a Trade Center for larger-scale industrial use. Included within the program for each village are schools and commercial activities, as well as employment activities. The Woodlands is planned to be developed over a 26-year period (commenced in 1972) with an ultimate population of 150,000. Following a summary chapter, Chapter II presents background material on The Woodlands and results of the study are summarized. Chapter III describes the project team and its organizational structure. Chapter IV outlines and documents the methodology that was employed in developing, analyzing, and evaluating the case study. The next chapter describes and analyzes the conventional plan, documents the process by which energy-conserving methods were selected, and evaluates the application of these methods to the Metro Center Study area. Chapter VI discusses constraints to implementation and is followed by a final chapter that presents the general conclusions from the case study and suggests directions for further investigation.

  12. An applied study using systems engineering methods to prioritize green systems options

    SciTech Connect

    Lee, Sonya M; Macdonald, John M

    2009-01-01

    For many years, there have been questions about the effectiveness of applying different green solutions. If you're building a home and wish to use green technologies, where do you start? While all technologies sound promising, which will perform the best over time? All this has to be considered within the cost and schedule of the project. The amount of information available on the topic can be overwhelming. We seek to examine if Systems Engineering methods can be used to help people choose and prioritize technologies that fit within their project and budget. Several methods are used to gain perspective into how to select the green technologies, such as the Analytic Hierarchy Process (AHP) and Kepner-Tregoe. In our study, subjects applied these methods to analyze cost, schedule, and trade-offs. Results will document whether the experimental approach is applicable to defining system priorities for green technologies.

  13. Mini–slings – an option in stress urinary incontinence treatment. Case studies

    PubMed Central

    Markowski, Michał; Kliś, Rafał; Różański, Waldemar

    2015-01-01

    Introduction Stress urinary incontinence (SUI) is a social disease caused by numerous contributing factors such as natural childbirth, obesity, hormonal deficiencies and changes in collagen fibers, to name a few. Currently, mini–slings, among all the surgical treatment methods, have gained significance. The aim of this study was to establish the effectiveness of this method. Material and methods From 2008 to 2012, one hundred sixty women suffering from SUI underwent surgical procedures to implant mini–slings under the middle part of the urethra and 140 (87.5%) of them remained under observation. In 65 cases, Johnson & Johnson's TVT–Secur was used; in 70 cases, BARD's Adjust mini–sling was used; and in 5 cases, AMS Mini–Arc mini–sling was used. The average period of hospitalization was 3 days per admission, operation and discharge day. Results In 82 cases, patients urinated well after the removal of the catheter, and had full urine continence. Fourteen patients showed great improvement, and in four cases temporary urine retention was observed. In two cases vaginal bleeding was observed, yet there was no need for wound revision. Evaluation of the ‘quality of life improvement’ was done using the Visual Analog Scale (VAS). Conclusions The obtained results allowed the conclusion that the implantation of mini–slings is a low invasive, relatively safe and effective procedure for the treatment of SUI even in cases of recurrence. Almost full recovery was achieved in all the cases of this study. The mini–sling has become an important element in modern urogynecology. PMID:25914841

  14. Development of Carbon Sequestration Options by Studying Carbon Dioxide-Methane Exchange in Hydrates

    NASA Astrophysics Data System (ADS)

    Horvat, Kristine Nicole

    Gas hydrates form naturally at high pressures (>4 MPa) and low temperatures (<4 °C) when a set number of water molecules form a cage in which small gas molecules can be entrapped as guests. It is estimated that about 700,000 trillion cubic feet (tcf) of methane (CH4) exist naturally as hydrates in marine and permafrost environments, which is more than any other natural sources combined as CH4 hydrates contain about 14 wt% CH4. However, a vast amount of gas hydrates exist in marine environments, which makes gas extraction an environmental challenge, both for potential gas losses during extraction and the potential impact of CH4 extraction on seafloor stability. From the climate change point of view, a 100 ppm increase in atmospheric carbon dioxide (CO2) levels over the past century is of urgent concern. A potential solution to both of these issues is to simultaneously exchange CH4 with CO 2 in natural hydrate reserves by forming more stable CO2 hydrates. This approach would minimize disturbances to the host sediment matrix of the seafloor while sequestering CO2. Understanding hydrate growth over time is imperative to prepare for large scale CH4 extraction coupled with CO2 sequestration. In this study, we performed macroscale experiments in a 200 mL high-pressure Jerguson cell that mimicked the pressure-temperature conditions of the seafloor. A total of 13 runs were performed under varying conditions. These included the formation of CH4 hydrates, followed by a CO2 gas injection and CO2 hydrate formation followed by a CH4 gas injection. Results demonstrated that once gas hydrates formed, they show "memory effect" in subsequent charges, irrespective of the two gases injected. This was borne out by the induction time data for hydrate formation that reduced from 96 hours for CH4 and 24 hours for CO2 to instant hydrate formation in both cases upon injection of a secondary gas. During the study of CH4-CO2 exchange where CH4 hydrates were first formed and CO2 gas was

  15. Evaluation of Participant Needs in a Regional Center for Security Studies

    ERIC Educational Resources Information Center

    Schmoker, Oliver E., III.

    2009-01-01

    This research study was implemented within the subject headquarters of a regional center, an organization responsible for security cooperation in Europe and Eurasia. The focus of the study was the center's program of security education. This program was designed to support evolving security objectives of foreign countries in order to increase the…

  16. Case-finding options for COPD: Results from the BOLD Study

    PubMed Central

    Jithoo, Anamika; Enright, Paul; Burney, Peter; Buist, A Sonia; Bateman, Eric D; Tan, Wan C; Studnicka, Michael; Mejza, Filip; Gillespie, Suzanne; Vollmer, William M

    2012-01-01

    Aim To compare strategies for COPD case-finding using data from the Burden of Obstructive Lung Disease (BOLD) study. Methods Population-based samples of adults aged ≥40 years (n= 9390) from 14 countries completed a questionnaire and spirometry. We compared the screening efficiency of different staged algorithms that used questionnaire data and/or PEF to identify persons at risk for COPD and hence needing confirmatory spirometry. Separate algorithms were fitted for moderate/severe COPD and for severe COPD. We estimated the cost of each algorithm in 1000 people. Results For moderate/severe COPD, use of questionnaire data alone permitted high sensitivity (97%), but required confirmatory spirometry on 80% of participants. Use of PEF only required confirmatory spirometry in only 19-22% of subjects with 83-84% sensitivity. For severe COPD, use of PEF achieved 91-93% sensitivity, requiring confirmatory spirometry in <9% of participants. Cost analysis suggested that a staged screening algorithm using only PEF initially, followed by confirmatory spirometry as needed, was the most cost-effective case finding strategy. Conclusion Our results support the use of PEF as a simple, cost-effective initial screening tool for conducting COPD case-finding in adults ≥40 years. These findings should be validated in real-world settings such as the primary care environment. PMID:22743668

  17. Greenhouse gas emissions of waste management processes and options: A case study.

    PubMed

    de la Barrera, Belen; Hooda, Peter S

    2016-07-01

    Increasing concern about climate change is prompting organisations to mitigate their greenhouse gas emissions. Waste management activities also contribute to greenhouse gas emissions. In the waste management sector, there has been an increasing diversion of waste sent to landfill, with much emphasis on recycling and reuse to prevent emissions. This study evaluates the carbon footprint of the different processes involved in waste management systems, considering the entire waste management stream. Waste management data from the Royal Borough of Kingston upon Thames, London (UK), was used to estimate the carbon footprint for its (Royal Borough of Kingston upon Thames) current source segregation system. Second, modelled full and partial co-mingling scenarios were used to estimate carbon emissions from these proposed waste management approaches. The greenhouse gas emissions from the entire waste management system at Royal Borough of Kingston upon Thames were 12,347 t CO2e for the source-segregated scenario, and 11,907 t CO2e for the partial co-mingled model. These emissions amount to 203.26 kg CO2e t(-1) and 196.02 kg CO2e t(-1) municipal solid waste for source-segregated and partial co-mingled, respectively. The change from a source segregation fleet to a partial co-mingling fleet reduced the emissions, at least partly owing to a change in the number and type of vehicles.

  18. Report on HVAC option selections for a relocatable classroom energy and indoor environmental quality field study

    SciTech Connect

    Apte, Michael G.; Delp, Woody W.; Diamond, Richard C.; Hodgson, Alfred T.; Kumar, Satish; Rainer, Leo I.; Shendell, Derek G.; Sullivan, Doug P.; Fisk, William J.

    2001-10-11

    It is commonly assumed that efforts to simultaneously develop energy efficient building technologies and to improve indoor environmental quality (IEQ) are unfeasible. The primary reason for this is that IEQ improvements often require additional ventilation that is costly from an energy standpoint. It is currently thought that health and productivity in work and learning environments requires adequate, if not superior, IEQ. Despite common assumptions, opportunities do exist to design building systems that provide improvements in both energy efficiency and IEQ. This report outlines the selection of a heating, ventilation, and air conditioning (HVAC) system to be used in demonstrating such an opportunity in a field study using relocatable school classrooms. Standard classrooms use a common wall mounted heat pump HVAC system. After reviewing alternative systems, a wall-mounting indirect/direct evaporative cooling system with an integral hydronic gas heating is selected. The anticipated advantages of this system include continuous ventilation of 100 percent outside air at or above minimum standards, projected cooling energy reductions of about 70 percent, inexpensive gas heating, improved airborne particle filtration, and reduced peak load electricity use. Potential disadvantages include restricted climate regions and possible increases in indoor relative humidity levels under some conditions.

  19. Photovoltaics as a worldwide energy option: A case study in development strategy

    NASA Astrophysics Data System (ADS)

    Jones, G.; Pate, R.; Hill, R.

    Renewable energy technologies, such as solar thermal electric, photovoltaics (PV), and wind energy have made significant gains in cost and performance in the past decades. As a result, there have been high expectations on the part of the public for these sources to play a major role in future energy supply, especially as environmental concerns about conventional sources increase. Despite these past gains and high expectations, the global potential of renewable energy technologies still remains largely untapped, principally because of issues of industrialization and user acceptance. There is increasing recognition that government energy programs must incorporate a broader strategy than the traditional basic research role if they are to address these issues. Essential elements of this strategy are affordable technology, a healthy industry, sustained market growth, user acceptance, and equitable policy and financial environments. The U.S. Department of Energy (DOE) programs in solar electric conversion have already started the development of the required broader based effort. This paper presents the status of that work, using the U.S. National Photovoltaic Program as a case study.

  20. Cardiovascular screening to reduce the burden from cardiovascular disease: microsimulation study to quantify policy options

    PubMed Central

    Allen, Kirk; Hickey, Graeme L; Guzman-Castillo, Maria; Bandosz, Piotr; Buchan, Iain; Capewell, Simon; O’Flaherty, Martin

    2016-01-01

    Objectives To estimate the potential impact of universal screening for primary prevention of cardiovascular disease (National Health Service Health Checks) on disease burden and socioeconomic inequalities in health in England, and to compare universal screening with alternative feasible strategies. Design Microsimulation study of a close-to-reality synthetic population. Five scenarios were considered: baseline scenario, assuming that current trends in risk factors will continue in the future; universal screening; screening concentrated only in the most deprived areas; structural population-wide intervention; and combination of population-wide intervention and concentrated screening. Setting Synthetic population with similar characteristics to the community dwelling population of England. Participants Synthetic people with traits informed by the health survey for England. Main outcome measure Cardiovascular disease cases and deaths prevented or postponed by 2030, stratified by fifths of socioeconomic status using the index of multiple deprivation. Results Compared with the baseline scenario, universal screening may prevent or postpone approximately 19 000 cases (interquartile range 11 000-28 000) and 3000 deaths (−1000-6000); concentrated screening 17 000 cases (9000-26 000) and 2000 deaths (−1000-5000); population-wide intervention 67 000 cases (57 000-77 000) and 8000 deaths (4000-11 000); and the combination of the population-wide intervention and concentrated screening 82 000 cases (73 000-93 000) and 9000 deaths (6000-13 000). The most equitable strategy would be the combination of the population-wide intervention and concentrated screening, followed by concentrated screening alone and the population-wide intervention. Universal screening had the least apparent impact on socioeconomic inequalities in health. Conclusions When primary prevention strategies for reducing cardiovascular disease burden and inequalities are

  1. Fiscal Year 1988 program report: Maine Environmental Studies Center

    SciTech Connect

    White, G.K.

    1989-07-01

    Groundwater protection continues to be a primary water resource issue in Maine. Concerns have developed as a result of numerous cases of groundwater contamination from hazardous waste sites, underground fuel tanks, and other sources. Maine is seeking new methods of aquifer classification and protection. Geographic information systems appear to be capable of making a significant contribution, by offering improved handling of a variety of geographically oriented information, to the efforts of both State and local governments in dealing with groundwater issues. Radon was a priority research issue for the Center in the late 1970s and early 1980s. Because of the state's bedrock geology, radon levels in well water and in household air are high enough in some Maine homes to entail significant health risks. Maine is unique among the lower forty-eight states in having so many lakes and ponds and so many miles of undeveloped rivers and streams. Numerous conflicts have arisen because of increasing development pressure as well as other factors such as intensified forestry practices, expanding recreational use of inland waters, and more stringent federal drinking water standards.

  2. Study of Traces of Tritium at the World Trade Center

    SciTech Connect

    Semkow, T M; Hafner, S R; Parekh, P P; Wozniak, G J; Haines, D K; Husain, L; Rabun, R L; Williams, P G

    2002-10-01

    Traces of tritiated water (HTO) were detected at the World Trade Center (WTC) ground zero after the 9/11/01 terrorist attack. A water sample from the WTC sewer, collected on 9/13/01, contained 0.164 {+-} 0.074 (2 {sigma}) nCi/L of HTO. A split water sample, collected on 9/21/01 from the basement of WTC Building 6, contained 3.53 {+-} 0.17 and 2.83 {+-} 0.15 nCi/L, respectively. These results are well below the levels of concern to human exposure. Several water and vegetation samples were analyzed from sites outside ground zero, located in Manhattan, Brooklyn, Queens, and the Kensico and Croton Reservoirs. No HTO above the background was found in those samples. Tritium radioluminescent (RL) devices were investigated as possible sources of the traces of tritium at ground zero. It was determined that the two Boeing 767 aircraft that hit the Twin Towers contained a combined 34 Ci of tritium at the time of impact in their emergency exit signs. There is also evidence that many weapons from law enforcement were present and destroyed at WTC. Such weaponry contains by design tritium sights. The fate and removal of tritium from ground zero were investigated, taking into consideration tritium chemistry and water flow originating from the fire fighting, rain, as well as leaks from the Hudson River and broken mains. A box model was developed to describe the above scenario. The model is consistent with instantaneous oxidation of the airplane tritium in the jet-fuel explosion, deposition of a small fraction of HTO at ground zero, and water-flow controlled removal of HTO from the debris. The model also suggests that tritium from the weapons would be released and oxidized to HTO at a much slower rate in the lingering fires at ground zero.

  3. Off-Campus Study Centers for Federal Employees, Fiscal Year 1969.

    ERIC Educational Resources Information Center

    Civil Service Commission, Washington, DC. Bureau of Training.

    One of three major training and educational resource publications from the Civil Service Commission, this directory provides information on individual off campus study centers for Federal Employees. Numbers of centers and participants are tabulated by agency and by state or other geographic location. Cooperating institutions, programs or course…

  4. Data and spatial studies of the USGS Texas Water Science Center

    USGS Publications Warehouse

    Burley, Thomas E.

    2014-01-01

    Hydrologists, geographers, geophysicists, and geologists with the U.S. Geological Survey (USGS) Texas Water Science Center (TXWSC) work in the USGS Water Mission Area on a diverse range of projects built on a foundation of spatial data. The TXWSC has developed sophisticated data and spatial-studies-related capabilities that are an integral part of the projects undertaken by the Center.

  5. Academic Skills Center Program: Peer Tutoring, Study Skills Classes, Academic Assistance.

    ERIC Educational Resources Information Center

    Anderson, Betty Marie; And Others

    The Academic Skills Center at Black Hills State University provides a peer assistance program comprising both individual tutoring in classes offered in each academic division and credit classes in study skills. The goal of the Center is to respond effectively and quickly to individual educational needs of students and faculty through a…

  6. Ancillary Pilot Study for the Educational Policy Research Center Program. Final Report.

    ERIC Educational Resources Information Center

    Hudson Inst., Croton-on-Hudson, NY.

    The role of the Hudson Institute in the policy research center program was to build on and adapt current studies of the future for the purpose of assisting the Office of Education and its five pilot centers. Part 1 of this report comments briefly on some methodological and substantive issues that arose during the pilot phase and suggests how…

  7. Examining mutable reform options for urban schools with multilevel analysis in the National Educational Longitudinal Study:88

    NASA Astrophysics Data System (ADS)

    Roberts, John Kyle

    2000-11-01

    The present study examined the effects of science course taking and school urbanicity on students' science achievement levels. More specifically, this study analyzed the National Educational Longitudinal Study (NELS:88) with multilevel techniques to investigate mutable reform options for urban schools in the area of science achievement. This study provided a unique insight into current research because all analyses were conducted with both ordinary least squares regression (OLS) and multilevel modeling techniques. Results from the comparison of OLS and multilevel techniques showed little effect on either overestimation or underestimation between the OLS weighted sample and the multilevel analysis. Although the differences between these two analyses were small, the multilevel techniques were optimized when the differences between schools was largest. Results from the multilevel and weighted analyses produced large differences when compared against the unweighted analysis. The unweighted sample consistently overestimated the coefficients of slope for each of the predictor variables. Because of these findings, researchers should be strongly cautioned against interpreting analyses run with the NELS:88 dataset without a weighted sample or without multilevel techniques. The results from the multiple regression analysis in both multilevel modeling and weighted OLS indicated that students who had parents who attended a school event, were not afraid to ask questions in science class, spent more time on homework each week, did not attend a school where science was taught in a non-English language, and had parents who belonged to a parent/teacher organization scored higher in terms of student science achievement than did their urban counterparts who did not meet these qualifications. From these results, several recommendations were made for schools concerning ways they could improve science education, including fostering attitudes of inquiry in science, increasing the

  8. Osteoporosis: Therapeutic Options.

    PubMed

    Ivanova, Stefka; Vasileva, Liliya; Ivanova, Stanislava; Peikova, Lily; Obreshkova, Danka

    2015-01-01

    The definition of osteoporosis was originally formulated at a conference of the World Health Organization (WHO) in 1993 as 'a systemic skeletal disease characterized by decreased bone mass and altered micro-architecture of bone tissue, leading to enhanced bone fragility and risk of fractures'. Osteoporosis is characterized by low bone mineral density (BMD) and loss of the structural and bio-mechanical properties that are required to maintain bone homeostasis. This review aims to address the currently available options in prevention and treatment of osteoporosis. Management of osteoporosis includes non-pharmacological treatment - diet rich of calcium and vitamin D, healthy lifestyle, proper exercise plan, and pharmacological therapy. Combination of non-pharmacological and pharmacological treatment options have to be considered for prevention of osteoporosis and minimization of the risk of fractures. Given the heterogeneity of osteoporosis syndrome and lack of significant number of comparative studies, the choice of a pharmacological agents should be individualized.

  9. Environmental contaminant studies by the Patuxent Wildlife Research Center

    USGS Publications Warehouse

    Heinz, G.H.; Hill, E.F.; Stickel, W.H.; Stickel, L.F.; Kenaga, E.E.

    1979-01-01

    Evaluation of the effects of environmental contaminants on wildlife is geared to interpreting events in the field, especially population effects, and both field and laboratory studies are planned for this purpose; procedures are adapted to specific problems and therefore do not include strict protocols or routine testing. Field evaluations include measurements of cholinesterase inhibition in brain or blood, search for dead or disabled animals, study of nesting success of birds, and general ecological observations. Residue analyses are used in evaluating organochlorine chemicals; samples may include whole bodies for determining level of exposure, brains for mortality diagnosis, whole blood for certain special studies, and eggs to help in evaluation of possible reproductive effects. Bird counts, singing-male census counts, small mamrnal trapping, and cage-in-field tests have proven to be ineffective or misleading and are not considered suitable for field evaluations under most circumstances. Usefulness of simulated field trials is limited to very special situations. Experimental studies that help predict and interpret field effects include determinations of lethal diagnostic levels, comparative lethal dietary toxicity tests, tests of secondary poisoning measurement of residue loss rates, measurement of blood enzymes, tests of behavioral effects, and studies of reproductive effects.

  10. Problem-Centered Social Studies Instruction. Approaches to Reflective Teaching.

    ERIC Educational Resources Information Center

    Gross, Richard E., Ed.; Muessig, Raymond H., Ed.

    The plea of this bulletin, the second and full revision of The Problems Approach and the Social Studies copyrighted in 1955 and 1960, is for teachers to do more with the reflective method in their classrooms. It draws upon the latest and most pertinent insights distilled from research, theory, and practice associated with reflective thinking;…

  11. Space Operations Center, shuttle interaction study, volume 1

    NASA Technical Reports Server (NTRS)

    1981-01-01

    The implication of using the Shuttle with the SOC, including constraints that the Shuttle places upon the SOC design is studied. The considerations involved in the use of the Shuttle as a part of the SOC concept, and the constraints to the SOC imposed by the Shuttle in its interactions with the SOC, and on the design or technical solutions which allow satisfactory accomplishment of the interactions are identified.

  12. Nuclear Monitoring Research at the Center for Seismic Studies

    DTIC Science & Technology

    1991-05-13

    Pachelmsky aula -’ . - d approximately 100 km to the south-east of OBN (Belyaevsky,1974). I- ,r,:ssion is traced to t-,e south-ea, 0. approximately 700...contributes to its poor backazimuth estimation. These results, combipred with those described in the section on polarization characteris- tics , confirm...ARCESS, using polarization characteris- tics as predictors. The attributes studied in the section on polarization (with the exception of azimuth) are

  13. Trends in Connectivity Technologies and Their Socioeconomic Impacts. Final Report of the Study: Policy Options for the Ubiquitous Internet Society. Technical Report

    ERIC Educational Resources Information Center

    Cave, Jonathan; van Oranje-Nassau, Constantijn; Schindler, Helen Rebecca; Shehabi, Ala'a; Brutscher, Philipp-Bastian; Robinson, Neil

    2009-01-01

    This report is intended to inform the European Commission's DG Information Society and Media in developing its policies for the period 2010-2020. It is targeted to policymakers with expert knowledge of the field. The report summarises the work conducted in the study: "Policy Options for the Ubiquitous Internet Society". It builds on…

  14. Uptake of prevention of mother-to-child-transmission using Option B+ in northern rural Malawi: a retrospective cohort study.

    PubMed

    Price, Alison J; Kayange, Michael; Zaba, Basia; Chimbwandira, Frank M; Jahn, Andreas; Chirwa, Zengani; Dasgupta, Aisha Nz; Katundu, Cynthia; Saul, Jacqueline L; Glynn, Judith R; Koole, Olivier; Crampin, Amelia C

    2014-06-01

    To identify points of dropout on the pathway from offering HIV testing to maintenance on antiretroviral therapy (ART), following the introduction of the Option B+ policy for pregnant women in Malawi (lifelong ART for HIV-positive mothers and 6 weeks nevirapine for the infants), a retrospective cohort study within a demographic surveillance system in northern Malawi. Women living in the demographic surveillance system who initiated antenatal care (ANC) between July 2011 (date of policy change) and January 2013, were eligible for inclusion. Women who consented were interviewed at home about their health facility attendance and care since pregnancy, including antenatal clinic (ANC) visits, delivery and postpartum care. Women's reports, patient-held health records and clinic health records were manually linked to ascertain service use. Among 395 women, 86% had tested for HIV before the pregnancy, 90% tested or re-tested at the ANC visit, and <1% had never tested. Among 53 mothers known to be HIV-positive before attending ANC, 15 (28%) were already on ART prior to pregnancy. Ten women tested HIV-positive for the first time during pregnancy. Of the 47 HIV-positive mothers not already on ART, 26/47 (55%) started treatment during pregnancy. All but five women who started ART were still on treatment at the time of study interview. HIV testing was almost universal and most women who initiated ART were retained in care. However, nearly half of eligible pregnant women not on ART at the start of ANC had not taken up the invitation to initiate (lifelong) ART by the time of delivery, leaving their infants potentially HIV-exposed.

  15. A single-center retrospective study of pediatric hepatoblastoma

    PubMed Central

    Zhang, Yi; Zhang, Weiling; Tang, Suoqin; Chen, Liping; Yi, You; Zhang, Pinwei; Liu, Aiping; Zhi, Tian; Huang, Dongsheng

    2016-01-01

    Hepatoblastoma is a malignant liver tumor generally diagnosed in infants and children <3 years old. The current retrospective study aimed to investigate the associations of tumor stage, pathological type, metastasis and chemotherapy with clinical outcomes. In the current study, a total of 102 patients with hepatoblastoma were enrolled between September 2006 and June 2014. Clinical records and follow-up information for each of patient were obtained to conduct a Kaplan-Meier survival analysis and log-rank test. The median age of the subjects was 1.5 years, and 98 patients had stage III or IV hepatoblastoma. Complete or partial remittance occurred in 72 subjects, and 91 underwent surgical operation. The survival rate differed significantly among patients with different tumor stages (P=0.015, χ2=8.359). The mortality rate of stage IV subjects with intrahepatic metastasis was significantly higher than that of those without (P=0.004). Among the 45 subjects with relapsed hepatoblastoma, the mortality rate was higher in the subjects that abandoned chemotherapy than in patients who continued regular chemotherapy. In total, 27 of 45 subjects with relapsed hepatoblastoma succumbed to the disease; 20 of them abandoned chemotherapy treatment; and the remaining 7 patients underwent regular chemotherapy and succumbed to the disease by the end of follow-up. The present study indicates that the increased mortality rate was associated with postoperative residual-induced intrahepatic metastasis and relapsed hepatoblastoma; and that regular chemotherapy is necessary for patient to achieve complete or partial remission following surgical operation. PMID:27895749

  16. The Center for Advanced Food Technology: Food Related Studies.

    DTIC Science & Technology

    1992-11-16

    Glucan (Callose) Synthase from Beta Vulgaris L. by Product-Entrapment," Entrapment Mechanisms and Polypeptide Characterization. Elant MU g. 97:684...Na3HGe7O16 xH20, xaO 0-6. 1," Chemiatr of Materials, 4:388. FRost, D.L, Drake, R.R., and B.P. Wasserman (1992) ’(1,3)-- glucan Synthase from Saccbaro...Wu, A., and R.W. Harriman (1992) "Probing the Molecular Architecture of (1,3-- Glucan (Callose) Synthase: Polypeptide Depletion Studies," Biochemical

  17. Highlighting High Performance: Adam Joseph Lewis Center for Environmental Studies, Oberlin College, Oberlin, Ohio

    SciTech Connect

    2002-11-01

    Oberlin College’s Adam Joseph Lewis Center for Environmental Studies is a high-performance building featuring an expansive photovoltaic system and a closed-loop groundwater heat pump system. Designers incorporated energy-efficient components and materials

  18. Process comparison study. MSFC Center Director's Discretionary Fund (CDDF)

    NASA Astrophysics Data System (ADS)

    Golden, T.; Krawiec, J.

    1992-11-01

    A process comparison study was conducted using four different advanced manufacturing techniques to fabricate a composite solid rocket booster systems tunnel cover. Costs and labor hours were tracked to provide the comparison between the processes. A relative structural comparison of the components is also included. The processes utilized included filament winding, pultrusion, automated tape laying, and thermoplastic thermoforming. The hand layup technique is also compared. Of the four advanced processes evaluated, the thermoformed thermoplastic component resulted in the least total cost. The automated tape laying and filament winding techniques closely followed the thermoplastic component in terms of total cost; and, these techniques show the most promise for high quality components and lower production costs. The pultruded component, with its expensive tooling and material requirements, was by far the most expensive process evaluated, although the results obtained would not be representative of large production runs.

  19. Process comparison study. MSFC Center Director's Discretionary Fund (CDDF)

    NASA Technical Reports Server (NTRS)

    Golden, T.; Krawiec, J.

    1992-01-01

    A process comparison study was conducted using four different advanced manufacturing techniques to fabricate a composite solid rocket booster systems tunnel cover. Costs and labor hours were tracked to provide the comparison between the processes. A relative structural comparison of the components is also included. The processes utilized included filament winding, pultrusion, automated tape laying, and thermoplastic thermoforming. The hand layup technique is also compared. Of the four advanced processes evaluated, the thermoformed thermoplastic component resulted in the least total cost. The automated tape laying and filament winding techniques closely followed the thermoplastic component in terms of total cost; and, these techniques show the most promise for high quality components and lower production costs. The pultruded component, with its expensive tooling and material requirements, was by far the most expensive process evaluated, although the results obtained would not be representative of large production runs.

  20. Postmission disposal options for upper stages

    NASA Astrophysics Data System (ADS)

    Eichler, Peter; Reynolds, Robert C.; Zhang, Jingchang; Bade, Anette; Jackson, A. A.; Johnson, Nicholas L.; McNamara, Roger

    1997-10-01

    NASA Management Instruction (NMI) 1700.8 directs each project office to limit orbital debris generation if this action is cost-effective and consistent with achieving mission objectives. To implement this policy, the NASA Office of Safety and Mission Assurance, the sponsor of NMI 1700.8, tasked NASA Johnson Space Center (JSC) to develop the NASA Safety Standard 1740.14: Guidelines and Assessment Procedures for Limiting Orbital Debris, August 1995. To mitigate the accumulation of mass in Earth orbit, NSS 1740.14 addresses the issues of postmission disposal of spacecraft and upper stages. According to the guidelines, these systems in general should be left in an orbit in which, using conservative projections for solar activity, atmospheric drag and gravitational perturbations will limit the lifetime in low Earth orbit (LEO) to no longer than 25 years after completion of mission. Consequently, JSC undertook a series of studies to investigate the most efficient and cost effective options for reducing orbit lifetime. In this paper we present an overview of the various options and give hints for the choice of the option best suited for specific mission types, e.g., depending on initial orbit, existing propulsion systems, existing electrical power level, electrical power and attitude control lifetime, and acceptable maneuver time and mass penalties.

  1. Western Fisheries Research Center--Forage fish studies in Puget Sound

    USGS Publications Warehouse

    Liedtke, Theresa L.

    2012-01-01

    Researchers at the Western Fisheries Research Center are working with other U.S. Geological Survey (USGS) Centers to better understand the interconnected roles of forage fishes throughout the ecosystem of Puget Sound, Washington. Support for these studies primarily is from the USGS Coastal Habitats in Puget Sound (CHIPS) program, which supports studies of the nearshore areas of Puget Sound. Human perturbations in the nearshore area such as shoreline armoring or urban development can affect the nearshore habitats critical to forage fish.

  2. Variation in Structure and Process of Care in Traumatic Brain Injury: Provider Profiles of European Neurotrauma Centers Participating in the CENTER-TBI Study

    PubMed Central

    Cnossen, Maryse C.; Polinder, Suzanne; Lingsma, Hester F.; Maas, Andrew I. R.; Menon, David; Steyerberg, Ewout W.

    2016-01-01

    Introduction The strength of evidence underpinning care and treatment recommendations in traumatic brain injury (TBI) is low. Comparative effectiveness research (CER) has been proposed as a framework to provide evidence for optimal care for TBI patients. The first step in CER is to map the existing variation. The aim of current study is to quantify variation in general structural and process characteristics among centers participating in the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study. Methods We designed a set of 11 provider profiling questionnaires with 321 questions about various aspects of TBI care, chosen based on literature and expert opinion. After pilot testing, questionnaires were disseminated to 71 centers from 20 countries participating in the CENTER-TBI study. Reliability of questionnaires was estimated by calculating a concordance rate among 5% duplicate questions. Results All 71 centers completed the questionnaires. Median concordance rate among duplicate questions was 0.85. The majority of centers were academic hospitals (n = 65, 92%), designated as a level I trauma center (n = 48, 68%) and situated in an urban location (n = 70, 99%). The availability of facilities for neuro-trauma care varied across centers; e.g. 40 (57%) had a dedicated neuro-intensive care unit (ICU), 36 (51%) had an in-hospital rehabilitation unit and the organization of the ICU was closed in 64% (n = 45) of the centers. In addition, we found wide variation in processes of care, such as the ICU admission policy and intracranial pressure monitoring policy among centers. Conclusion Even among high-volume, specialized neurotrauma centers there is substantial variation in structures and processes of TBI care. This variation provides an opportunity to study effectiveness of specific aspects of TBI care and to identify best practices with CER approaches. PMID:27571205

  3. A Study of Flood Evacuation Center Using GIS and Remote Sensing Technique

    NASA Astrophysics Data System (ADS)

    Mustaffa, A. A.; Rosli, M. F.; Abustan, M. S.; Adib, R.; Rosli, M. I.; Masiri, K.; Saifullizan, B.

    2016-07-01

    This research demonstrated the use of Remote Sensing technique and GIS to determine the suitability of an evacuation center. This study was conducted in Batu Pahat areas that always hit by a series of flood. The data of Digital Elevation Model (DEM) was obtained by ASTER database that has been used to delineate extract contour line and elevation. Landsat 8 image was used for classification purposes such as land use map. Remote Sensing incorporate with GIS techniques was used to determined the suitability location of the evacuation center from contour map of flood affected areas in Batu Pahat. GIS will calculate the elevation of the area and information about the country of the area, the road access and percentage of the affected area. The flood affected area map may provide the suitability of the flood evacuation center during the several levels of flood. The suitability of evacuation centers can be determined based on several criteria and the existing data of the evacuation center will be analysed. From the analysis among 16 evacuation center listed, there are only 8 evacuation center suitable for the usage during emergency situation. The suitability analysis was based on the location and the road access of the evacuation center toward the flood affected area. There are 10 new locations with suitable criteria of evacuation center proposed on the study area to facilitate the process of rescue and evacuating flood victims to much safer and suitable locations. The results of this study will help in decision making processes and indirectly will help organization such as fire-fighter and the Department of Social Welfare in their work. Thus, this study can contribute more towards the society.

  4. Farmers' Options to Address Water Scarcity in a Changing Climate: Case Studies from two Basins in Mediterranean Chile

    NASA Astrophysics Data System (ADS)

    Roco, Lisandro; Poblete, David; Meza, Francisco; Kerrigan, George

    2016-12-01

    Irrigated agriculture in Mediterranean areas faces tremendous challenges because of its exposure to hydroclimatic variability, increasing competition for water from different sectors, and the possibility of a climatic change. In this context, efficient management of water resources emerges as a critical issue. This requires the adoption of technological innovations, investment in infrastructure, adequate institutional arrangements, and informed decision makers. To understand farmers' perceptions and their implementation of climate change adaptation strategies with regards to water management, primary information was captured in the Limarí and Maule river basins in Chile. Farmers identified stressors for agriculture; climate change, droughts, and lack of water appeared as the most relevant stressors compared to others productive, economic, and institutional factors; revealing a rising relevance of climate related factors. While most producers perceived climate changes in recent years (92.9 %), a significant proportion (61.1 %) claim to have experienced drought, whereas only a fraction (31.9 %) have implemented a strategy to deal with this situation. Identified actions were classified in four groups: investments for water accumulation, modernization of irrigation systems, rationalization of water use, and partnership activities. Using a multinomial logit model these strategies were related to socioeconomic and productive characteristics. Results show that gender and farm size are relevant for investments, implementation and improvement of irrigation systems. For all the strategies described, access to weather information was a relevant element. The study provides empirical evidence of a recent increase in the importance assigned to climate factors by producers and adaptation options that can be supported by agricultural policy.

  5. Farmers' Options to Address Water Scarcity in a Changing Climate: Case Studies from two Basins in Mediterranean Chile.

    PubMed

    Roco, Lisandro; Poblete, David; Meza, Francisco; Kerrigan, George

    2016-12-01

    Irrigated agriculture in Mediterranean areas faces tremendous challenges because of its exposure to hydroclimatic variability, increasing competition for water from different sectors, and the possibility of a climatic change. In this context, efficient management of water resources emerges as a critical issue. This requires the adoption of technological innovations, investment in infrastructure, adequate institutional arrangements, and informed decision makers. To understand farmers' perceptions and their implementation of climate change adaptation strategies with regards to water management, primary information was captured in the Limarí and Maule river basins in Chile. Farmers identified stressors for agriculture; climate change, droughts, and lack of water appeared as the most relevant stressors compared to others productive, economic, and institutional factors; revealing a rising relevance of climate related factors. While most producers perceived climate changes in recent years (92.9 %), a significant proportion (61.1 %) claim to have experienced drought, whereas only a fraction (31.9 %) have implemented a strategy to deal with this situation. Identified actions were classified in four groups: investments for water accumulation, modernization of irrigation systems, rationalization of water use, and partnership activities. Using a multinomial logit model these strategies were related to socioeconomic and productive characteristics. Results show that gender and farm size are relevant for investments, implementation and improvement of irrigation systems. For all the strategies described, access to weather information was a relevant element. The study provides empirical evidence of a recent increase in the importance assigned to climate factors by producers and adaptation options that can be supported by agricultural policy.

  6. A study of space station needs, attributes, and architectural options, volume 2, technical. Book 2: Mission implementation concepts

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Space station systems characteristics and architecture are described. A manned space station operational analysis is performed to determine crew size, crew task complexity and time tables, and crew equipment to support the definition of systems and subsystems concepts. This analysis is used to select and evaluate the architectural options for development.

  7. Numerical Algorithm for Delta of Asian Option.

    PubMed

    Zhang, Boxiang; Yu, Yang; Wang, Weiguo

    2015-01-01

    We study the numerical solution of the Greeks of Asian options. In particular, we derive a close form solution of Δ of Asian geometric option and use this analytical form as a control to numerically calculate Δ of Asian arithmetic option, which is known to have no explicit close form solution. We implement our proposed numerical method and compare the standard error with other classical variance reduction methods. Our method provides an efficient solution to the hedging strategy with Asian options.

  8. Screening regional management options for their impact on climate resilience: an approach and case study in the Venen-Vechtstreek wetlands in the Netherlands.

    PubMed

    Wardekker, J A; Wildschut, D; Stemberger, S; van der Sluijs, J P

    2016-01-01

    Freshwater systems provide various resources and services. These are often vulnerable to climate change and other pressures. Therefore, enhancing resilience to climate change is important for their long term viability. This paper explores how management options can be evaluated on their resilience implications. The approach included five steps: (1) characterizing the system, (2) characterizing the impacts of climate change and other disturbances, (3) inventorying management options, (4) assessing the impacts of these on climate resilience, and (5) follow-up analysis. For the resilience assessment, we used a set of 'resilience principles': homeostasis, omnivory, high flux, flatness, buffering, and redundancy. We applied the approach in a case study in a Dutch wetlands region. Many options in the region's management plan contribute to resilience, however, the plan underutilised several principles, particularly flatness, but also redundancy and omnivory for agriculture, and high flux for nature. Co-benefits was identified as an important additional criterion to obtain support for adaptation from local stakeholders, such as farmers. The approach provided a relatively quick and participatory way to screen options. It allowed us to consider multiple impacts and sectors, multiple dimensions of resilience, and stakeholder perspectives. The results can be used to identify gaps or pitfalls, and set priorities for follow-up analyses.

  9. A simulation study of the energy-efficient options for upgrading and retrofitting a medium-size municipal wastewater treatment plant.

    PubMed

    Mucha, Zbigniew; Mikosz, Jerzy

    2016-10-01

    Many municipal wastewater treatment plants are retrofitted with membrane filtration that replaces secondary clarification. Such a solution saves space and improves overall treatment efficiency but at the cost of increased energy consumption and reduced potential for energy recovery from sewage sludge. Thus, the plant takes a step back from reaching energy self-sufficiency. In the presented case study, two alternative upgrade options were simulated for a medium-size municipal wastewater treatment plant in Poland: the first one assumed optimization of the existing bioreactor, and the other - installation of microfiltration membrane units inside the bioreactor. In both cases, anaerobic digestion of waste sludge with biogas utilization is planned. The results have shown that while under both upgrade options, the plant's capacity can be effectively increased by approximately 50%, their effects on the plant's energy balance will be very different. Although the installation of membrane modules accompanied by the construction of anaerobic digestion tanks improves the plant's energy balance, it will remain negative. The option of optimizing the existing biological treatment system produces a positive energy balance with more energy produced from biogas than consumed. Thus, the plant is able to approach energy self-sufficiency. It has been concluded that retrofitting the plants with membrane filtration is not always the best option from the energy balance point of view and it should be preceded with a detailed analysis on a case-by-case basis.

  10. Implementation of Patient-Centered Education for Chronic-Disease Management in Uganda: An Effectiveness Study

    PubMed Central

    Rabin, Tracy; Canavan, Maureen E.; Nassali, Faith; Kirchhoff, Phillip; Kalyesubula, Robert; Coca, Steven; Rastegar, Asghar; Knauf, Felix

    2016-01-01

    Background The majority of non-communicable disease related deaths occur in low- and middle-income countries. Patient-centered care is an essential component of chronic disease management in high income settings. Objective To examine feasibility of implementation of a validated patient-centered education tool among patients with heart failure in Uganda. Design Mixed-methods, prospective cohort. Settings A private and public cardiology clinic in Mulago National Referral and Teaching Hospital, Kampala, Uganda. Participants Adults with a primary diagnosis of heart failure. Interventions PocketDoktor Educational Booklets with patient-centered health education. Main Measures The primary outcomes were the change in Patient Activation Measure (PAM-13), as well as the acceptability of the PocketDoktor intervention, and feasibility of implementing patient-centered education in outpatient clinical settings. Secondary outcomes included the change in satisfaction with overall clinical care and doctor-patient communication. Key Results A total of 105 participants were enrolled at two different clinics: the Mulago Outpatient Department (public) and the Uganda Heart Institute (private). 93 participants completed follow up at 3 months and were included in analysis. The primary analysis showed improved patient activation measure scores regarding disease-specific knowledge, treatment options and prevention of exacerbations among both groups (mean change 0.94 [SD = 1.01], 1.02 [SD = 1.15], and 0.92 [SD = 0.89] among private paying patients and 1.98 [SD = 0.98], 1.93 [SD = 1.02], and 1.45 [SD = 1.02] among public paying patients, p<0.001 for all values) after exposure to the intervention; this effect was significantly larger among indigent patients. Participants reported that materials were easy to read, that they had improved knowledge of disease, and stated improved communication with physicians. Conclusions Patient-centered medical education can improve confidence in self

  11. The Effects of Policy Changes on the Educational Opportunity Centers: A Case Study

    ERIC Educational Resources Information Center

    Fountain-Ellis, Debra L.

    2011-01-01

    The purpose of this study is to explore the programmatic changes that occurred in the Educational Opportunity Centers (EOC) and how those changes influenced educational opportunities for adults. A case study design was used for this investigation. The directors of three EOCs were selected and interviewed for the study. These directors combined…

  12. Using a Pattern-Centered Approach to Assess Sexual Risk-Taking in Study Abroad Students

    ERIC Educational Resources Information Center

    Marcantonio, Tiffany; Angelone, D. J.; Sledjeski, Eve

    2016-01-01

    Objectives: The purpose of this study was to examine the impact of several potential factors related to sexually risky behaviors in study abroad students. The authors utilized a pattern-centered analysis to identify specific groups that can be targeted for intervention. Participants: The sample consisted of 173 students who studied abroad in a…

  13. The Lathrop Wells volcanic center: Status of field and geochronology studies

    SciTech Connect

    Crowe, B.; Morley, R.; Wells, S.; Geissman, J.; McDonald, E.; McFadden, L.; Perry, F.; Murrell, M.; Poths, J.; Forman, S.

    1993-03-01

    The Lathrop Wells volcanic center is located 20 km south of the potential Yucca Mountain site, at the south end of the Yucca Mountain range. It has long been recognized as the youngest basalt center in the region. However, determination of the age and eruptive history of the center has proven problematic. The purpose of this paper is to describe the status of field and geochronology studies of the Lathrop Wells center. Our perspective is that it is critical to assess all possible methods for obtaining cross-checking data to resolve chronology and field problems. It is equally important to consider application of the range of chronology methods available in Quaternary geologic research. Such an approach seeks to increase the confidence in data interpretations through obtaining convergence among separate isotopic, radiogenic, and age-correlated methods. Finally, the assumptions, strengths, and weaknesses of each dating method need to be carefully described to facilitate an impartial evaluation of results.

  14. San Antonio Military Medical Center integration: a case study in organizational leadership design.

    PubMed

    De Lorenzo, Robert A

    2008-02-01

    The Defense Base Closure and Realignment Commission law of 2005 established a combined Army-Air Force medical center in San Antonio, Texas. The new facility is named the San Antonio Military Medical Center. This planned integration of two facilities would result in the downsizing of Wilford Hall Medical Center to a clinic and expansion of the nearby Brooke Army Medical Center to encompass all inpatient care. As part of the integration, the emergency services of both hospitals, to include the emergency departments, would merge under single leadership. As part of this case study, the proposed future organizational design is examined. Real and potential barriers to change are also indentified and possible solutions are explored.

  15. An exploratory study of alternative configurations of governing boards of substance abuse treatment centers

    PubMed Central

    Blum, Terry C.; Roman, Paul M.

    2011-01-01

    Boards of directors are the ultimate governing authorities for most organizations providing substance abuse treatment. A governing board may establish policies, monitor and improve operations, and represent a treatment organization to the public. This paper explores alternative configurations of governing boards in a national sample of 500 substance abuse treatment centers. The study proceeds from the premise that boards may be configured with varying levels of engagement in five aspects of internal management and external connections in treatment center operating environments. Based on interviews with treatment center administrative directors, four clusters emerge, describing boards that are: (1) active and balanced across internal and external domains; (2) active boundary spanners concentrating primarily on external relationships; (3) focused primarily on internal organizational management; and (4) relatively inactive. In post hoc analysis, we found that placement in these clusters is associated with treatment center attributes such as rate of growth and financial results, use of evidence based practices and provision of integrated care. PMID:21489737

  16. EPR study of Fe3+ in α-quartz: Further lithium-compensated centers

    NASA Astrophysics Data System (ADS)

    Choi, Deok; Weil, John A.

    1990-12-01

    Fe3+ (S=52) centers in synthetic α-quartz, designated by S'1 and S''1 by previous workers, which are very similar to the previously studied center [FeO4/Li]0α (called S1), have been examined at temperatures around 35 K via an X-band electron-paramagnetic-resonance study. Hyperfine signals due to the Li7 nucleus were detected for both centers, establishing their alkali-metal-ion content. The spin-Hamiltonian parameters were determined, allowing for anisotropy of the g factor as well as [g,D,A(Li7), P(Li7)]-matrix noncoaxiality, and including high-spin terms of the form S4. Evaluation of the results indicates that the lithium 1+ ion is present interstitially near to the substitutional Fe3+ ion (located at a Si4+ site) on the same crystal twofold axis, for all three centers: S1, S'1 and S''1. The designations [FeO4/Li]0α' are proposed for the centers S'1 and S''1, respectively. The relative concentrations of these centers appear to depend sensitively on the growth regions within each crystal.

  17. TANK SPACE OPTIONS REPORT

    SciTech Connect

    WILLIS WL; AHRENDT MR

    2009-08-11

    Since this report was originally issued in 2001, several options proposed for increasing double-shell tank (DST) storage space were implemented or are in the process of implementation. Changes to the single-shell tank (SST) waste retrieval schedule, completion of DST space saving options, and the DST space saving options in progress have delayed the projected shortfall of DST storage space from the 2007-2011 to the 2018-2025 timeframe (ORP-11242, River Protection Project System Plan). This report reevaluates options from Rev. 0 and includes evaluations of new options for alleviating projected restrictions on SST waste retrieval beginning in 2018 because of the lack of DST storage space.

  18. The management approach to the NASA space station definition studies at the Manned Spacecraft Center

    NASA Technical Reports Server (NTRS)

    Heberlig, J. C.

    1972-01-01

    The overall management approach to the NASA Phase B definition studies for space stations, which were initiated in September 1969 and completed in July 1972, is reviewed with particular emphasis placed on the management approach used by the Manned Spacecraft Center. The internal working organizations of the Manned Spacecraft Center and its prime contractor, North American Rockwell, are delineated along with the interfacing techniques used for the joint Government and industry study. Working interfaces with other NASA centers, industry, and Government agencies are briefly highlighted. The controlling documentation for the study (such as guidelines and constraints, bibliography, and key personnel) is reviewed. The historical background and content of the experiment program prepared for use in this Phase B study are outlined and management concepts that may be considered for future programs are proposed.

  19. The NASA Lewis Research Center's Expendable Launch Vehicle Program: An Economic Impact Study

    NASA Technical Reports Server (NTRS)

    Austrian, Ziona

    1996-01-01

    This study investigates the economic impact of the Lewis Research Center's (LeRC) Expendable Launch Vehicle Program (ELVP) on Northeast Ohio's economy. It was conducted by The Urban Center's Economic Development Program in Cleveland State University's Levin College of Urban Affairs. The study measures ELVP's direct impact on the local economy in terms of jobs, output, payroll, and taxes, as well as the indirect impact of these economic activities when they "ripple" throughout the economy. The study uses regional economic multipliers based on input-output models to estimate the effect of ELVP spending on the Northeast Ohio economy.

  20. The NASA Lewis Research Center's Expendable Launch Vehicle Program: An Economic Impact Study

    NASA Technical Reports Server (NTRS)

    Austrian, Ziona

    1996-01-01

    This study investigates the economic impact of the Lewis Research Center's (LeRC) Expendable Launch Vehicle Program (ELVP) on Northeast Ohio's economy. It was conducted by The Urban Center's Economic Development Program in Cleveland State University's Levin College of Urban Affairs. The study measures ELVP's direct impact on the local economy in terms of jobs, output, payroll, and taxes, as well as the indirect impact of these economic activities when they 'ripple' throughout the economy. The study uses regional economic multipliers based on input-output models to estimate the effect of ELVP spending on the Northeast Ohio economy.

  1. Pricing and hedging Asian basket spread options

    NASA Astrophysics Data System (ADS)

    Deelstra, Griselda; Petkovic, Alexandre; Vanmaele, Michèle

    2010-04-01

    Asian options, basket options and spread options have been extensively studied in the literature. However, few papers deal with the problem of pricing general Asian basket spread options. This paper aims to fill this gap. In order to obtain prices and Greeks in a short computation time, we develop approximation formulae based on comonotonicity theory and moment matching methods. We compare their relative performances and explain how to choose the best approximation technique as a function of the Asian basket spread characteristics. We also give explicitly the Greeks for our proposed methods. In the last section we extend our results to options denominated in foreign currency.

  2. The Impact of Introducing Centering Pregnancy in a Community Health Setting: A Qualitative Study of Experiences and Perspectives of Health Center Clinical and Support Staff.

    PubMed

    Kania-Richmond, Ania; Hetherington, Erin; McNeil, Deborah; Bayrampour, Hamideh; Tough, Suzanne; Metcalfe, Amy

    2017-01-12

    Objectives Introducing new programming into an existing setting may be challenging. Understanding how staff and clinicians who are not directly involved in program delivery view the program can help support program implementation. This study aimed to understand how peripheral staff and clinicians perceived a newly implemented Centering Pregnancy group prenatal care program in a community-based health center and its impact on clinic operations. Methods Semi-structured interviews were conducted with a purposive sample of 12 staff members at a community-based health center. The interview guide covered topics such as perceptions of Centering Pregnancy and how the program impacted their work. An interpretive description approach was used to analyze the interview data. A coding framework was developed iteratively and all interview data were analyzed independently by multiple researchers. Results Staff had overall positive perceptions of Centering Pregnancy, but the level of understanding about the program varied widely. Most respondents viewed the Centering Pregnancy program as separate from other programs offered by the clinic, which created both opportunities and challenges. Opportunities included increased cross-referrals between established services and Centering Pregnancy. Challenges included a lack of communication about responsibilities of staff in relation to Centering Pregnancy patients. Impact on staff and overall clinic operations was perceived to be minimal to moderate, and most tensions related to roles and expectations were resolved. Conclusions for Practice Clear communication regarding fit within clinic structures and processes and expectations of staff in relation to the program was critical to the integration of Centering Pregnancy program into an established health center.

  3. Management options for recycling radioactive scrap metals

    SciTech Connect

    Dehmel, J.C.; MacKinney, J.; Bartlett, J.

    1997-02-01

    The feasibility and advantages of recycling radioactive scrap metals (RSM) have yet to be assessed, given the unique technical, regulatory, safety, and cost-benefit issues that have already been raised by a concerned recycling industry. As is known, this industry has been repeatedly involved with the accidental recycling of radioactive sources and, in some cases, with costly consequences. If recycling were deemed to be a viable option, it might have to be implemented with regulatory monitoring and controls. Its implementation may have to consider various and complex issues and address the requirements and concerns of distinctly different industries. There are three basic options for the recycling of such scraps. They are: (1) recycling through the existing network of metal-scrap dealers and brokers, (2) recycling directly and only with specific steelmills, or (3) recycling through regional processing centers. Under the first option, scrap dealers and brokers would receive material from RSM generators and determine at which steelmills such scraps would be recycled. For the second option, RSM generators would deal directly with selected steelmills under specific agreements. For the third option, generators would ship scraps only to regional centers for processing and shipment to participating steelmills. This paper addresses the potential advantages of each option, identifies the types of arrangements that would need to be secured among all parties, and attempts to assess the receptivity of the recycling industry to each option.

  4. An analytical and experimental study of crack extension in center-notched composites

    NASA Technical Reports Server (NTRS)

    Beuth, Jack L., Jr.; Herakovich, Carl T.

    1987-01-01

    The normal stress ratio theory for crack extension in anisotropic materials is studied analytically and experimentally. The theory is applied within a microscopic-level analysis of a single center notch of arbitrary orientation in a unidirectional composite material. The bulk of the analytical work of this study applies an elasticity solution for an infinite plate with a center line to obtain critical stress and crack growth direction predictions. An elasticity solution for an infinite plate with a center elliptical flaw is also used to obtain qualitative predictions of the location of crack initiation on the border of a rounded notch tip. The analytical portion of the study includes the formulation of a new crack growth theory that includes local shear stress. Normal stress ratio theory predictions are obtained for notched unidirectional tensile coupons and unidirectional Iosipescu shear specimens. These predictions are subsequently compared to experimental results.

  5. Usability of patient-centered health IT: mixed-methods usability study of ePill.

    PubMed

    Schmidt-Kraepelin, Manuel; Dehling, Tobias; Sunyaev, Ali

    2014-01-01

    To facilitate use of patient-centered health IT applications in everyday life, a high degree of usability is required. Based on the example of a patient-centered web application, we propose a usability study design enabling developers and researchers to assess usability of patient-centered health IT applications and derive implications for their improvement. Our study design integrates tasks that subjects have to process, an associated questionnaire based on Perceived Ease of Use, Perceived Usefulness, Attitude Toward Using, and Behavioral Intention to Use, a System Usability Scale questionnaire, and focus groups. Application of the usability study design demonstrates its feasibility and provides insights for assessment of usability in related projects in research and practice.

  6. A STUDY OF THE INTEGRATION OF SERVICES OF INDUSTRIAL MEDICAL DEPARTMENTS AND A REHABILITATION CENTER. FINAL REPORT.

    ERIC Educational Resources Information Center

    MCQUILLEN, ANITA; AND OTHERS

    THIS IS A DEMONSTRATION PROJECT OF COOPERATION BETWEEN A REHABILITATION CENTER AND THREE LARGE INDUSTRIAL COMPANIES. OVER A 3-YEAR PERIOD, 56 WORKERS WHO HAD BEEN INJURED ON THE JOB AND HOSPITALIZED WERE ADMITTED TO THE REHABILITATION CENTER. OF THE 50 WORKERS STUDIED, THE AVERAGE LENGTH OF STAY IN THE CENTER WAS 36 DAYS. A FOLLOWUP STUDY,…

  7. A Case Study: An ACT Stress Management Group in a University Counseling Center

    ERIC Educational Resources Information Center

    Daltry, Rachel M.

    2015-01-01

    The aim of this study was to examine the effectiveness of an acceptance and commitment therapy (ACT) stress management group in a college counseling center setting. This study explored (a) the effectiveness of ACT in increasing participants' ability to tolerate distress, which directly affects their ability to function in a stressful college…

  8. A Case Study of Spirituality in Senior Center Education: Qualitative Research in Adult Education

    ERIC Educational Resources Information Center

    Demarse, Laura

    2016-01-01

    This article presents a case study on the role of spirituality in adult education at a suburban senior center located in the southeast region of the country. The purpose of the case study was to understand the deeply personal role of spirituality in adult education as seen through teaching seniors and examine the personal manifestation of…

  9. Keldysh research center's experimental facility for studying of thermal control systems with two-phase coolant

    NASA Astrophysics Data System (ADS)

    Bednov, Sergey M.; Vezhnevets, Petr D.; Desyatov, Andrey V.; Tsikhotsky, Yury M.; Prokhorov, Yury. M.; Kopiatkevich, R.; Gorbenko, Gennady; Diev, M.

    1997-01-01

    This Paper presents a brief description of the experimental facility which was developed in the Keldysh Research Center (KeRC) for studying and working out the thermal control system (TCS) for the Russian segment of the International space station ``Alpha'' (ISSA). The list of scientific and design problems which will be studied during ground testing is given.

  10. Faculty Members' Perceptions of Community College Centers for Teaching and Learning: A Qualitative Study

    ERIC Educational Resources Information Center

    Frey, Sandra A.

    2012-01-01

    The purpose of this study was to explore faculty members' perceptions of community college Centers for Teaching and Learning (CTLs); whose main purpose is to promote, facilitate, and honor excellence in teaching and learning through the support of full-time and adjunct faculty, at all career stages. A generic qualitative study with a grounded…

  11. Leaders' Experiences with High School-College Writing Center Collaborations: A Qualitative Multiple-Case Study

    ERIC Educational Resources Information Center

    Story, Julie A.

    2014-01-01

    The purpose of this qualitative multiple-case study was to explore academic leaders' experiences with the organizational elements of their own high school-college writing center collaborations. Conjoining theories framed this study: collaborative leadership theory, Kenneth Bruffee's notion of social constructionism and collaborative learning…

  12. A Patient Learning Center for an Army MEDDAC - A Feasibility Study. Final Report.

    ERIC Educational Resources Information Center

    Kucha, Deloros H.

    A feasibility study was conducted to examine in detail, analyze, and describe the development and operation (system effectiveness and efficiency) of a patient learning center in a MEDDAC, and to provide such information to the Surgeon General for use in planning future health care delivery to military-care eligible beneficiaries. Study objectives…

  13. A Qualitative Study of Information Technology Managers' Experiences and Perceptions Regarding Outsourced Data Centers

    ERIC Educational Resources Information Center

    Reid, Eric Justin

    2015-01-01

    This qualitative study explored the perceptions and experiences of IT Managers in publicly traded companies within the San Antonio, Texas area about outsourced data centers. Narrative data was collected using open-ended questions and face-to-face interviews within semi-structured environments. The research questions guided the study: (1)…

  14. Experimental parametric study of servers cooling management in data centers buildings

    NASA Astrophysics Data System (ADS)

    Nada, S. A.; Elfeky, K. E.; Attia, Ali M. A.; Alshaer, W. G.

    2017-01-01

    A parametric study of air flow and cooling management of data centers servers is experimentally conducted for different design conditions. A physical scale model of data center accommodating one rack of four servers was designed and constructed for testing purposes. Front and rear rack and server's temperatures distributions and supply/return heat indices (SHI/RHI) are used to evaluate data center thermal performance. Experiments were conducted to parametrically study the effects of perforated tiles opening ratio, servers power load variation and rack power density. The results showed that (1) perforated tile of 25% opening ratio provides the best results among the other opening ratios, (2) optimum benefit of cold air in servers cooling is obtained at uniformly power loading of servers (3) increasing power density decrease air re-circulation but increase air bypass and servers temperature. The present results are compared with previous experimental and CFD results and fair agreement was found.

  15. Study of the Alsys implementation of the Catalogue of Interface Features and Options for the Ada language for 80386 Unix

    NASA Technical Reports Server (NTRS)

    Gibson, James S.; Barnes, Michael J.; Ostermiller, Daniel L.

    1993-01-01

    A set of programs was written to test the functionality and performance of the Alsys Ada implementation of the Catalogue of Interface Features and Options (CIFO), a set of optional Ada packages for real-time applications. No problems were found with the task id, preemption control, or shared-data packages. Minor problems were found with the dispatching control, dynamic priority, events, non-waiting entry call, semaphore, and scheduling packages. The Alsys implementation is derived mostly from Release 2 of the CIFO standard, but includes some of the features of Release 3 and some modifications unique to Alsys. Performance measurements show that the semaphore and shared-data features are an order-of-magnitude faster than the same mechanisms using an Ada rendezvous. The non-waiting entry call is slightly faster than a standard rendezvous. The existence of errors in the implementation, the incompleteness of the documentation from the published standard impair the usefulness of this implementation. Despite those short-comings, the Alsys CIFO implementation might be of value in the development of real-time applications.

  16. NASA Earth Science Mission Control Center Enterprise Emerging Technology Study Study (MCC Technology Study)

    NASA Technical Reports Server (NTRS)

    Smith, Dan; Horan, Stephen; Royer, Don; Sullivan, Don; Moe, Karen

    2015-01-01

    This paper reports on the results of the study to identify technologies that could have a significant impact on Earth Science mission operations when looking out at the 5-15 year horizon (through 2025). The potential benefits of the new technologies will be discussed, as well as recommendations for early research and development, prototyping, or analysis for these technologies.

  17. Corporate culture assessments in integrative oncology: a qualitative case study of two integrative oncology centers.

    PubMed

    Mittring, Nadine; Pérard, Marion; Witt, Claudia M

    2013-01-01

    The offer of "integrative oncology" is one option for clinics to provide safe and evidence-based complementary medicine treatments to cancer patients. As known from merger theories, corporate culture and integration models have a strong influence on the success of such integration. To identify relevant corporate culture aspects that might influence the success in two highly visible integrative oncology clinics, we interviewed physicians, nurses, practitioners, and managers. All interviews (11 in a German breast cancer clinic and 9 in an integrative medicine cancer service in the USA) were audio-recorded, transcribed and analyzed with content analysis. According to the theoretical framework of mergers, each clinic selected a different integration type ("best of both worlds" and "linking"). Nonetheless, each developed a similar corporate culture that has a strong focus on research and safe and evidence-based treatments, and fosters a holistic and patient-centered approach. Structured communication within the team and with other departments had high relevance. Research was highlighted as a way to open doors and to facilitate a more general acceptance within the hospital. Conventional physicians felt unburdened by the provision of integrative medicine service but also saw problems in the time required for scheduled treatments, which often resulted in long waiting lists.

  18. Public health potential of farmers' markets on medical center campuses: a case study from Penn State Milton S. Hershey Medical Center.

    PubMed

    George, Daniel R; Kraschnewski, Jennifer L; Rovniak, Liza S

    2011-12-01

    There are currently 7175 farmers' markets in the United States, and these organizations are increasingly viewed as one facet of the solution to national health problems. There has been a recent trend toward establishing markets on medical center campuses, and such partnerships can augment a medical center's ability to serve community health. However, to our knowledge no studies have described the emergence of a market at a medical center, the barriers and challenges such an initiative has faced, or the nature of programming it may foster. We provide a qualitative description of the process of starting a seasonal, once-a-week, producers-only market at the Pennsylvania State Hershey Medical Center, and we call for greater public health attention to these emerging community spaces.

  19. Public Health Potential of Farmers’ Markets on Medical Center Campuses: A Case Study From Penn State Milton S. Hershey Medical Center

    PubMed Central

    Kraschnewski, Jennifer L.; Rovniak, Liza S.

    2011-01-01

    There are currently 7175 farmers’ markets in the United States, and these organizations are increasingly viewed as one facet of the solution to national health problems. There has been a recent trend toward establishing markets on medical center campuses, and such partnerships can augment a medical center's ability to serve community health. However, to our knowledge no studies have described the emergence of a market at a medical center, the barriers and challenges such an initiative has faced, or the nature of programming it may foster. We provide a qualitative description of the process of starting a seasonal, once-a-week, producers-only market at the Pennsylvania State Hershey Medical Center, and we call for greater public health attention to these emerging community spaces. PMID:22021298

  20. Characterization of anthropometric assessment studies of Brazilian children attending daycare centers

    PubMed Central

    Pedraza, Dixis Figueroa; de Menezes, Tarciana Nobre

    2016-01-01

    Abstract Objective: To obtain an overview of available information on the anthropometric assessment of Brazilian children attending daycare centers. Data source: A literature search was carried out in the PubMed, LILACS and SciELO databases of studies published from 1990 to 2013 in Portuguese and English languages. The following search strategy was used: (nutritional status OR anthropometrics OR malnutrition OR overweight) AND daycare centers, as well as the equivalent terms in Portuguese. In the case of MEDLINE search, the descriptor Brazil was also used. Data synthesis: It was verified that the 33 studies included in the review were comparable from a methodological point of view. The studies, in general, were characterized by their restrictive nature, geographical concentration and dispersion of results in relation to time. Considering the studies published from 2010 onwards, low prevalence of acute malnutrition and significant rates of stunting and overweight were observed. Conclusions: Despite the limitations, considering the most recent studies that used the WHO growth curves (2006), it is suggested that the anthropometric profile of Brazilian children attending daycare centers is characterized by a nutritional transition process, with significant prevalence of overweight and short stature. We emphasize the need to develop a multicenter survey that will more accurately define the current anthropometric nutritional status of Brazilian children attending daycare centers. PMID:26553574

  1. Radioisotope Stirling Generator Options for Pluto Fast Flyby Mission

    SciTech Connect

    Schock, Alfred

    1993-10-01

    The preceding paper described conceptual designs and analytical results for five Radioisotope Thermoelectric Generator (RTG) options for the Pluto Fast Flyby (PFF) mission, and the present paper describes three Radioisotope Stirling Generator (RSG) options for the same mission. The RSG options are based on essentially the same radioisotope heat source modules used in previously flown RTGs and on designs and analyses of a 75-watt free-piston Stirling engine produced by Mechanical Technology Incorporated (MTI) for NASA's Lewis Research Center. The integrated system design options presented were generated in a Fairchild Space study sponsored by the Department of Energy's Office of Special Applications, in support of ongoing PFF mission and spacecraft studies that the Jet Propulsion Laboratory (JPL) is conducting for the National Aeronautics and Space Administration (NASA). That study's NASA-directed goal is to reduce the spacecraft mass from its baseline value of 166 kg to ~110 kg, which implies a mass goal of less than 10 kg for a power source able to deliver 69 watts(e) at the end of the 9.2-year mission. In general, the Stirling options were found to be lighter than the thermoelectric options described in the preceding paper. But they are less mature, requiring more development, and entailing greater programmatic risk. The Stirling power system mass ranged from 7.3 kg (well below the 10-kg goal) for a non-redundant system to 11.3 kg for a redundant system able to maintain full power if one of its engines fails. In fact, the latter system could deliver as much as 115 watts(e) if desired by the mission planners. There are 5 copies in the file.

  2. Radioisotope Stirling Generator Options for Pluto Fast Flyby Mission

    SciTech Connect

    Schock, Alfred

    2012-01-19

    The preceding paper described conceptual designs and analytical results for five Radioisotope Thermoelectric Generator (RTG) options for the Pluto Fast Flyby (PFF) mission, and the present paper describes three Radioisotope Stirling Generator (RSG) options for the same mission. The RSG options are based on essentially the same radioisotope heat source modules used in previously flown RTGs and on designs and analyses of a 75-watt free-piston Stirling engine produced by Mechanical Technology Incorporated (MTI) for NASA's Lewis Research Center. The integrated system design options presented were generated in a Fairchild Space study sponsored by the Department of Energy's Office of Special Applications, in support of ongoing PFF mission and spacecraft studies that the Jet Propulsion Laboratory (JPL) is conducting for the National Aeronautics and Space Administration (NASA). That study's NASA-directed goal is to reduce the spacecraft mass from its baseline value of 166 kg to ~110 kg, which implies a mass goal of less than 10 kg for a power source able to deliver 69 watts(e) at the end of the 9.2-year mission. In general, the Stirling options were found to be lighter than the thermoelectric options described in the preceding paper. But they are less mature, requiring more development, and entailing greater programmatic risk. The Stirling power system mass ranged from 7.3 kg (well below the 10-kg goal) for a non-redundant system to 11.3 kg for a redundant system able to maintain full power if one of its engines fails. In fact, the latter system could deliver as much as 115 watts(e) if desired by the mission planners. There are 2 copies in the file.

  3. Technology utilization in a non-urban region: Further impact and technique of the Technology Use Studies Center

    NASA Technical Reports Server (NTRS)

    1976-01-01

    Updated information is given pertaining to Technology Use Studies Center (TUSC) clients who are those that receive/use information as disseminated by the center. The client information is presented as a continuation of client data as set forth in the center's previous annual report.

  4. Connecting teens to caring adults in a school-based health center: a case study.

    PubMed

    Blacksin, Beth A; Kelly, Patricia J

    2015-01-01

    The traditional medical care system is generally unable to provide the broad health and wellness services needed by many adolescents, especially those from low-income and racial/ethnic minority communities. Using a theoretical framework adapted from Bronfenbrenner's ecological model of multiple influencers, this case study examined how a school-based health center was able to provide a network of connections for adolescents to caring adults within the school and the local community. Contributors to this network were the creation of a student-centered community with access to adolescent-friendly services, providers acting as connectors, and care of the whole adolescent.

  5. Oxidative addition of methane and benzene C--H bonds to rhodium center: A DFT study

    NASA Astrophysics Data System (ADS)

    Bi, Siwei; Zhang, Zhenwei; Zhu, Shufen

    2006-11-01

    A density functional theory study on mechanisms of the oxidative addition of methane and benzene C-H bonds to the rhodium center containing Cp and PMe 3 ligands has been performed. Our calculated results confirm that the C-H bond cleavage from a sigma complex to a hydride alkyl complex is the rate-determining step. Compared with the case of methane C-H bond, the oxidative addition of benzene C-H bond is more favorable kinetically and thermodynamically. Stronger backdonation from metal center to the σ ∗ antibonding orbital of benzene C-H bond is responsible for the observations.

  6. Reflections and Recommendations Based on a Migrant Health Center's Participation in a CDC Study.

    ERIC Educational Resources Information Center

    Nolon, Anne K.; O'Barr, James

    Hudson Valley Migrant Health (HVMH) (a Public Health Service program) collaborated with the Center for Disease Control (CDC) and the New York State Department of Health (NYSDOH) on a study of the incidence of sexually transmitted diseases and tuberculosis among migrant farmworkers in the mid-Hudson region of New York. CDC research personnel…

  7. Environmental Studies Center Teacher Books. 7th Grade - Spoil Island Investigation.

    ERIC Educational Resources Information Center

    Martin County Schools, Jensen Beach, FL. Environmental Studies Center.

    This teacher's guide, one of nine teacher packages developed for use in the sequential, hands-on, field-oriented, K-8 environmental education program of the Martin County Schools in Florida, was developed for use with secondary students in grade seven prior to and after a visit to an environmental studies center located near an estuarine area. The…

  8. 78 FR 42084 - Electronic Study Data Submission; Data Standard Support; Availability of the Center for Drug...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-15

    ... HUMAN SERVICES Food and Drug Administration Electronic Study Data Submission; Data Standard Support; Availability of the Center for Drug Evaluation and Research Data Standards Program Documents AGENCY: Food and...) of the Food and Drug Administration (FDA) is announcing the availability of the CDER Data...

  9. Growing up Active: A Study into Physical Activity in Long Day Care Centers

    ERIC Educational Resources Information Center

    Cashmore, Aaron W.; Jones, Sandra C.

    2008-01-01

    The child care center is an ideal setting in which to implement strategies to promote physical activity and healthy weight, but there is a paucity of empirical evidence on factors that influence physical activity in these settings. The current study gathered initial qualitative data to explore these factors. Child care workers from five long day…

  10. A Case Study Using Child-Centered Play Therapy Approach to Treat Enuresis and Encopresis.

    ERIC Educational Resources Information Center

    Cuddy-Casey, Maria

    1997-01-01

    Demonstrates an alternative method (nondirective child-centered therapy) in treating enuresis and encopresis resulting from emotional disturbances. Examines various etiologies and approaches to treating these conditions. Provides a case study example. Claims that professionals must differentiate between primary and secondary occurrences of these…

  11. Highlighting High Performance Buildings: Adam Joseph Lewis Center for Environmental Studies

    SciTech Connect

    2002-11-01

    Oberlin College's Adam Joseph Lewis Center for Environmental Studies is a high-performance building featuring an expansive photovoltaic system and a closed-loop groundwater heat pump system. Designers incorporated energy-efficient components and materials that are local, non-toxic, and durable.

  12. Evolving a University Center to a Branch Campus: A Case Study

    ERIC Educational Resources Information Center

    Mills, Steven C.; Plumb, Robin

    2012-01-01

    Higher education is now expected to respond to community demands that include fueling economic development and addressing the needs of a wider range of students. Colleges and universities have responded to these demands using a variety of delivery models. A study was conducted by the Ardmore Higher Education Center to identify the advantages and…

  13. Technostress in Libraries and Media Centers: Case Studies and Coping Strategies.

    ERIC Educational Resources Information Center

    Hickey, Kate D., Ed.

    1992-01-01

    Discusses technostress--i.e., stress brought on by changes in technology--in libraries and media centers. Case studies are presented that show stress in community college libraries caused by the rapid implementation of new technologies; coping strategies for librarians and media specialists are discussed; and strategies for managers are suggested.…

  14. High Tech Centers for Students with Disabilities in the California Community Colleges: A Program Outputs Study.

    ERIC Educational Resources Information Center

    California Community Colleges, Sacramento. High-Tech Center for the Disabled.

    This document overviews a descriptive study conducted by the High-Tech Training Unit (HTCU) at the request of the California Community College Chancellor's Office. The mission of the 114 High Tech Centers (HTCs) at California Community Colleges is to train disabled students in the use of access technologies as a method of mainstreaming them into…

  15. Recruitment Challenges: Lessons from Senior Centers and Older African-American Participants in a Literacy Study

    ERIC Educational Resources Information Center

    Ntiri, Daphne W.; Stewart, Merry

    2010-01-01

    This article reviews the challenges encountered in the recruitment of urban older African-Americans in a study to explore the effects of interactive educational intervention on functional health literacy and diabetes knowledge. Our methods included identification of challenges related to the individual characteristics of seniors' centers that…

  16. Validating the Center for Epidemiological Studies Depression Scale for Children in Rwanda

    ERIC Educational Resources Information Center

    Betancourt, Theresa; Scorza, Pamela; Meyers-Ohki, Sarah; Mushashi, Christina; Kayiteshonga, Yvonne; Binagwaho, Agnes; Stulac, Sara; Beardslee, William R.

    2012-01-01

    Objective: We assessed the validity of the Center for Epidemiological Studies Depression Scale for Children (CES-DC) as a screen for depression in Rwandan children and adolescents. Although the CES-DC is widely used for depression screening in high-income countries, its validity in low-income and culturally diverse settings, including sub-Saharan…

  17. Qualitative Delphi Study of Factors Influencing Data Center Investment in Eco-Innovations

    ERIC Educational Resources Information Center

    Stewart, M. Bennett

    2016-01-01

    This qualitative investigation explored the diffusion of eco-innovations within the U.S. data center industry from 2007 to 2015 whose adoption was intended to decouple digital economy growth from environmental impact. Using diffusion of innovation theory to inform the study, and synthesizing subject matter expert input from a Delphi panel…

  18. A Case Study in Teacher-Centered Curriculum Development: The Process in Walpole Public Schools.

    ERIC Educational Resources Information Center

    Kline, Jane

    In this case study illustrating teacher-centered curriculum development, teachers in the Walpole (Massachusetts) public school system were asked to select a reading program for use in grades K-8. Twenty-five teachers served on two teams over a two-year period. They used developmental learning kits at the kindergarten level, basal reading series…

  19. Electron paramagnetic resonance study of Fe3+ in α-quartz: Hydrogen-compensated center

    NASA Astrophysics Data System (ADS)

    Mombourquette, M. J.; Minge, J.; Hantehzadeh, M. R.; Weil, J. A.; Halliburton, L. E.

    1989-03-01

    Electron paramagnetic resonance and proton electron-nuclear double-resonance studies of a hydrogen-compensated Fe3+ (S=(5/2) center in synthetic iron-doped α-quartz have been carried out at 20 and 15 K, respectively. The spin-Hamiltonian parameters were determined, allowing anisotropy of the g matrix as well as [g,D,A(1H)]-matrix noncoaxiality, and including high-spin terms of the form S4. Evaluation of the results gives strong evidence that the center (called S2 by some workers) consists of a Fe3+ ion occurring substitutionally at a Si4+ site, charge compensated by an interstitial hydrogen ion. The label [FeO4/H+]0 is proposed for the center.

  20. Family-Centered Care in Juvenile Justice Institutions: A Mixed Methods Study Protocol

    PubMed Central

    Mulder, Eva; Rigter, Henk; Breuk, René; van der Vaart, Wander; Vermeiren, Robert

    2016-01-01

    Background Treatment and rehabilitation interventions in juvenile justice institutions aim to prevent criminal reoffending by adolescents and to enhance their prospects of successful social reintegration. There is evidence that these goals are best achieved when the institution adopts a family-centered approach, involving the parents of the adolescents. The Academic Workplace Forensic Care for Youth has developed two programs for family-centered care for youth detained in groups for short-term and long-term stay, respectively. Objective The overall aim of our study is to evaluate the family-centered care program in the first two years after the first steps of its implementation in short-term stay groups of two juvenile justice institutions in the Netherlands. The current paper discusses our study design. Methods Based on a quantitative pilot study, we opted for a study with an explanatory sequential mixed methods design. This pilot is considered the first stage of our study. The second stage of our study includes concurrent quantitative and qualitative approaches. The quantitative part of our study is a pre-post quasi-experimental comparison of family-centered care with usual care in short-term stay groups. The qualitative part of our study involves in-depth interviews with adolescents, parents, and group workers to elaborate on the preceding quantitative pilot study and to help interpret the outcomes of the quasi-experimental quantitative part of the study. Results We believe that our study will result in the following findings. In the quantitative comparison of usual care with family-centered care, we assume that in the latter group, parents will be more involved with their child and with the institution, and that parents and adolescents will be more motivated to take part in therapy. In addition, we expect family-centered care to improve family interactions, to decrease parenting stress, and to reduce problem behavior among the adolescents. Finally, we assume

  1. Development of remedial process options: Phase II, Feasibility study: Installation Restoration Program, Naval Air Station Fallon, Fallon, Nevada

    SciTech Connect

    Cronk, T.A.; Smuin, D.R.; Schlosser, R.M.

    1991-11-01

    This technical memorandum develops process options which are appropriate for environmental restoration activities at Naval Air Station Fallon (NAS Fallon), Nevada. Introduction of contaminants to the environment has resulted from deliberate disposal activities (both through dumping and landfilling) and accidental spills and leaks associated with normal activities at NAS Fallon over its lifetime of operation. Environmental sampling results indicate that the vast majority of contaminants of concern are petroleum hydrocarbon related. These contaminants include JP-4, JP-5, leaded and unleaded gasoline, waste oils and lubricants, hydraulic fluids, and numerous solvents and cleaners. The principal exposure pathways of concern associated with NAS Fallon contaminants appear to be the surface flows and shallow drainage systems to which the base contributes. Available data indicate NAS Fallon IR Program sites are not contributing excessive contamination to surface flows emanating from the base. Contaminants appear to be contained in a relatively immobile state in the shallow subsurface with little or no contaminant migration off site.

  2. Approximate option pricing

    SciTech Connect

    Chalasani, P.; Saias, I.; Jha, S.

    1996-04-08

    As increasingly large volumes of sophisticated options (called derivative securities) are traded in world financial markets, determining a fair price for these options has become an important and difficult computational problem. Many valuation codes use the binomial pricing model, in which the stock price is driven by a random walk. In this model, the value of an n-period option on a stock is the expected time-discounted value of the future cash flow on an n-period stock price path. Path-dependent options are particularly difficult to value since the future cash flow depends on the entire stock price path rather than on just the final stock price. Currently such options are approximately priced by Monte carlo methods with error bounds that hold only with high probability and which are reduced by increasing the number of simulation runs. In this paper the authors show that pricing an arbitrary path-dependent option is {number_sign}-P hard. They show that certain types f path-dependent options can be valued exactly in polynomial time. Asian options are path-dependent options that are particularly hard to price, and for these they design deterministic polynomial-time approximate algorithms. They show that the value of a perpetual American put option (which can be computed in constant time) is in many cases a good approximation to the value of an otherwise identical n-period American put option. In contrast to Monte Carlo methods, the algorithms have guaranteed error bounds that are polynormally small (and in some cases exponentially small) in the maturity n. For the error analysis they derive large-deviation results for random walks that may be of independent interest.

  3. A longitudinal study of enterobiasis in three day care centers of Havana City.

    PubMed

    Núñez, F A; Hernández, M; Finlay, C M

    1996-01-01

    Pinworm infection was prospectively studied during one year in 469 children attending three day care centers. Each child was examined at six months intervals using up to three perianal swabs with adhesive tape. Those found infected were treated with mebendazole. At the beginning of the study we found a prevalence of 28% that dropped to 13% and 12% in the following study periods. The reinfection rate was twice the incidence rate in both study periods. We also found a small percentage (10%) of the children reinfected in most or all study periods. There was a high correlation between reinfection and perianal itching. Our results add further knowledge to the epidemiology of intestinal parasites in day care centers.

  4. Los Angeles International Airport Runway Incursion Studies: Phase III--Center-Taxiway Simulation

    NASA Technical Reports Server (NTRS)

    Madson, Michael D.

    2004-01-01

    Phase III of the Los Angeles International Airport Runway Incursion Studies was conducted, under an agreement with HNTB Corporation, at the NASA Ames FutureFlight Central (FFC) facility in June 2003. The objective of the study was the evaluation of a new center-taxiway concept at LAX. This study is an extension of the Phase I and Phase II studies previously conducted at FFC. This report presents results from Phase III of the study, in which a center-taxiway concept between runways 25L and 25R was simulated and evaluated. Phase III data were compared objectively against the Baseline data. Subjective evaluations by participating LAX controllers were obtained with regard to workload, efficiency, and safety criteria. To facilitate a valid comparison between Baseline and Phase III data, the same scenarios were used for Phase III that were tested during Phases I and II. This required briefing participating controllers on differences in airport and airline operations between 2001 and today.

  5. Mars Surface Habitability Options

    NASA Technical Reports Server (NTRS)

    Howe, A. Scott; Simon, Matthew; Smitherman, David; Howard, Robert; Toups, Larry; Hoffman, Stephen J.

    2015-01-01

    This paper reports on current habitability concepts for an Evolvable Mars Campaign (EMC) prepared by the NASA Human Spaceflight Architecture Team (HAT). For many years NASA has investigated alternative human Mars missions, examining different mission objectives, trajectories, vehicles, and technologies; the combinations of which have been referred to as reference missions or architectures. At the highest levels, decisions regarding the timing and objectives for a human mission to Mars continue to evolve while at the lowest levels, applicable technologies continue to advance. This results in an on-going need for assessments of alternative system designs such as the habitat, a significant element in any human Mars mission scenario, to provide meaningful design sensitivity characterizations to assist decision-makers regarding timing, objectives, and technologies. As a subset of the Evolvable Mars Campaign activities, the habitability team builds upon results from past studies and recommends options for Mars surface habitability compatible with updated technologies.

  6. Sorafenib treatment of radioiodine-refractory advanced thyroid cancer in daily clinical practice: a cohort study from a single center.

    PubMed

    Gallo, Marco; Michelon, Federica; Castiglione, Anna; Felicetti, Francesco; Viansone, Alessandro Adriano; Nervo, Alice; Zichi, Clizia; Ciccone, Giovannino; Piovesan, Alessandro; Arvat, Emanuela

    2015-08-01

    Treatment options for recurrent or metastatic differentiated thyroid cancer (DTC) refractory to radioactive iodine (RAI) are inadequate. Multitargeted kinase inhibitors have recently shown promising results in phase 2-3 studies. This retrospective study aimed to document our clinical experience on the effects of sorafenib in the setting of daily clinical practice. Retrospective study evaluating the efficacy and safety of sorafenib in a cohort of patients consecutively treated with sorafenib at a single center. Twenty patients with advanced RAI-refractory thyroid carcinoma were enrolled (March 2011-March 2014). Patients generally started with 400 mg of sorafenib twice daily, tapering the dose in case of side effects. Radiological response and toxicity were measured during follow-up, together with safety parameters. CT scans were performed by a single experienced radiologist every 3-4 months. Five patients stopped sorafenib within 90 days due to severe toxicities. Median progression-free survival was 248 days. Five patients had a partial response (PR), achieved in all cases within 3 months, whereas 5 had stable disease (SD) at 12 months. Durable response rate (PR plus SD) for at least 6 months was 50 %, among those who received sorafenib for at least 3 months. Commonest adverse events included skin toxicity, gastrointestinal and constitutional symptoms. In our cohort of patients with advanced RAI-refractory thyroid carcinoma, sorafenib confirmed antitumor activity leading to SD or PR in the majority of cases, at the expense of clinically relevant side effects. More effective and tolerable agents are still needed in the treatment of RAI-refractory DTC.

  7. Maintenance and supply options

    NASA Technical Reports Server (NTRS)

    1988-01-01

    The object of the Maintenance and Supply Option was to develop a high level operational philosophy related to maintenance and supply operations and incorporate these concepts into the Lunar Base Study. Specific products to be generated during this task were three trade studies and a conceptual design of the Logistic Supply Module. The crew size study was performed to evaluate crew sizes from the baseline size of four to a crew size of eight and determine the preferred crew size. The second trade study was to determine the impact of extending surface stay times and recommend a preferred duration of stay time as a function of crew, consumables, and equipment support capabilities. The third trade study was an evaluation of packaging and storage methods to determine the preferred logistics approach to support the lunar base. A modified scenario was developed and served as the basis of the individual trade studies. Assumptions and guidelines were also developed from experience with Apollo programs, Space Shuttle operations, and Space Station studies. With this information, the trade studies were performed and a conceptual design for the Logistic Supply Module was developed.

  8. The Origins of Options

    PubMed Central

    Smaldino, Paul E.; Richerson, Peter J.

    2012-01-01

    Most research on decision making has focused on how human or animal decision makers choose between two or more options, posed in advance by the researchers. The mechanisms by which options are generated for most decisions, however, are not well understood. Models of sequential search have examined the trade-off between continued exploration and choosing one’s current best option, but still cannot explain the processes by which new options are generated. We argue that understanding the origins of options is a crucial but untapped area for decision making research. We explore a number of factors which influence the generation of options, which fall broadly into two categories: psycho-biological and socio-cultural. The former category includes factors such as perceptual biases and associative memory networks. The latter category relies on the incredible human capacity for culture and social learning, which doubtless shape not only our choices but the options available for choice. Our intention is to start a discussion that brings us closer toward understanding the origins of options. PMID:22514515

  9. OnWARD: ontology-driven web-based framework for multi-center clinical studies.

    PubMed

    Tran, Van-Anh; Johnson, Nathan; Redline, Susan; Zhang, Guo-Qiang

    2011-12-01

    With a large percentage of clinical trials still using paper forms as the primary data collection tool, there is much potential for increasing efficiency through web-based data collection systems, especially for large-scale multi-center trials. This paper presents OnWARD, an ontology-driven, secure, rapidly-deployed, web-based framework supporting data capture for large-scale multi-center clinical research. Our approach is developed using the agile methodology to provide a flexible, user-centered dynamic form generator, which can be quickly deployed and customized for any clinical study without the need of deep technical expertise. Because of the flexible framework, the data management system can be extended to accommodate a large variety of data types, including genetic, genomic and proteomic data. In this paper, we demonstrate the initial deployment of OnWARD for a Phase II multi-center clinical trial after a development period of merely three months. The study utilizes 23 clinical report forms containing more than 1500 data points. Preliminary evaluation results show that OnWARD exceeded expectations of the clinical investigators in efficiency, flexibility and ease in setting up.

  10. Mental health status and its predictors among call center employees: A cross-sectional study.

    PubMed

    Oh, Hyunjin; Park, Heyeon; Boo, Sunjoo

    2017-03-15

    In this study, we assessed the mental health of Korean call center employees and investigated the potential predictors of their mental health status. A cross-sectional study using self-completing questionnaire was conducted for employees working for a credit card call center. A total of 306 call center employees completed the Depression Anxiety Stress Scale, the Emotion Labor Scale, and the Korean Occupational Stress Scale. The results showed that more than half of the participants reported high levels of depression, anxiety, and stress. A multiple regression analysis indicated that the total scores on the Depression Anxiety Stress Scale were predicted by perceived health, job satisfaction, job demands, organizational injustice, and emotional dissonance suggesting that, in the interest of improving the mental health of call center employees, their job demands and emotional dissonance should be reduced and the work environment be improved. Consideration should be given to providing routine assessments of mental health, including depression, anxiety, and stress, and the corresponding need for the development of an intervention program and other work-related policies that would protect employees from the risk of poor mental health outcomes.

  11. Medical waste management in Jordan: A study at the King Hussein Medical Center

    SciTech Connect

    Oweis, Rami . E-mail: oweis@just.edu.jo; Al-Widyan, Mohamad . E-mail: widyan@just.edu.jo; Al-Limoon, Ohood . E-mail: oweis@just.edu.jo

    2005-07-01

    As in many other developing countries, the generation of regulated medical waste (RMW) in Jordan has increased significantly over the last few decades. Despite the serious impacts of RMW on humans and the environment, only minor attention has been directed to its proper handling and disposal. This study was conducted in the form of a case study at one of Jordan's leading medical centers, namely, the King Hussein Medical Center (KHMC). Its purpose was to report on the current status of medical waste management at KHMC and propose possible measures to improve it. In general, it was found that the center's administration was reasonably aware of the importance of medical waste management and practiced some of the measures to adequately handle waste generated at the center. However, it was also found that significant voids were present that need to be addressed in the future including efficient segregation, the use of coded and colored bags, better handling and transfer means, and better monitoring and tracking techniques, as well as the need for training and awareness programs for the personnel.

  12. Experimental study of high density foods for the Space Operations Center

    NASA Technical Reports Server (NTRS)

    Ahmed, S. M.

    1981-01-01

    The experimental study of high density foods for the Space Operations Center is described. A sensory evaluation of the high density foods was conducted first to test the acceptability of the products. A shelf-life study of the high density foods was also conducted for three different time lengths at three different temperatures. The nutritional analysis of the high density foods is at present incomplete.

  13. The Dust Accelerator Facility of the Colorado Center for Lunar Dust and Atmospheric Studies

    SciTech Connect

    Horanyi, M.; Colette, A.; Drake, K.; Gruen, E.; Kempf, S.; Munsat, T.; Robertson, S.; Shu, A.; Sternovsky, Z.; Wang, X.

    2011-11-29

    The NASA Lunar Institute's Colorado Center for Lunar Dust and Atmospheric Studies has recently completed the construction of a new experimental facility to study hypervelocity dust impacts. The installation includes a 3 MV Pelletron, accelerating small particles in the size range of 0.1 to few microns to velocities in the range of 1 to 100 km/s. Here we report the capabilities of our facility, and the results of our first experiments.

  14. [Interior] Configuration options, habitability and architectural aspects of the transfer habitat module (THM) and the surface habitat on Mars (SHM)/ESA's AURORA human mission to Mars (HMM) study

    NASA Astrophysics Data System (ADS)

    Imhof, Barbara

    2007-02-01

    This paper discusses the findings for [Interior] configuration options, habitability and architectural aspects of a first human spacecraft to Mars. In 2003 the space architecture office LIQUIFER was invited by the European Space Agency's (ESA) AURORA Program committee to consult the scientists and engineers from the European Space and Technology Center (ESTEC) and other European industrial communities with developing the first human mission to Mars, which will take place in 2030, regarding the architectural issues of crewed habitats. The task was to develop an interior configuration for a transfer vehicle (TV) to Mars, especially a transfer habitation module (THM) and a surface habitat module (SHM) on Mars. The total travel time Earth—Mars and back for a crew of six amounts to approximately 900 days. After a 200-day-flight three crewmembers will land on Mars in the Mars excursion vehicle (MEV) and will live and work in the SHM for 30 days. For 500 days before the 200-day journey back the spacecraft continues to circle the Martian orbit for further exploration. The entire mission program is based on our present knowledge of technology. The project was compiled during a constant feedback-design process and trans-disciplinary collaboration sessions in the ESA-ESTEC concurrent design facility. Long-term human space flight sets new spatial conditions and requirements to the design concept. The guidelines were developed from relevant numbers and facts of recognized standards, interviews with astronauts/cosmonauts and from analyses about habitability, sociology, psychology and configuration concepts of earlier space stations in combination with the topics of the individual's perception and relation of space. Result of this study is the development of a prototype concept for the THM and SHM with detailed information and complete plans of the interior configuration, including mass calculations. In addition the study contains a detailed explanation of the development of

  15. Real Time Pricing as a Default or Optional Service for C&ICustomers: A Comparative Analysis of Eight Case Studies

    SciTech Connect

    Barbose, Galen; Goldman, Charles; Bharvirkar, Ranjit; Hopper,Nicole; Ting, Michael; Neenan, Bernie

    2005-08-01

    Demand response (DR) has been broadly recognized to be an integral component of well-functioning electricity markets, although currently underdeveloped in most regions. Among the various initiatives undertaken to remedy this deficiency, public utility commissions (PUC) and utilities have considered implementing dynamic pricing tariffs, such as real-time pricing (RTP), and other retail pricing mechanisms that communicate an incentive for electricity consumers to reduce their usage during periods of high generation supply costs or system reliability contingencies. Efforts to introduce DR into retail electricity markets confront a range of basic policy issues. First, a fundamental issue in any market context is how to organize the process for developing and implementing DR mechanisms in a manner that facilitates productive participation by affected stakeholder groups. Second, in regions with retail choice, policymakers and stakeholders face the threshold question of whether it is appropriate for utilities to offer a range of dynamic pricing tariffs and DR programs, or just ''plain vanilla'' default service. Although positions on this issue may be based primarily on principle, two empirical questions may have some bearing--namely, what level of price response can be expected through the competitive retail market, and whether establishing RTP as the default service is likely to result in an appreciable level of DR? Third, if utilities are to have a direct role in developing DR, what types of retail pricing mechanisms are most appropriate and likely to have the desired policy impact (e.g., RTP, other dynamic pricing options, DR programs, or some combination)? Given a decision to develop utility RTP tariffs, three basic implementation issues require attention. First, should it be a default or optional tariff, and for which customer classes? Second, what types of tariff design is most appropriate, given prevailing policy objectives, wholesale market structure, ratemaking

  16. Centering, Scale Indeterminacy, and Differential Item Functioning Detection in Hierarchical Generalized Linear and Generalized Linear Mixed Models

    ERIC Educational Resources Information Center

    Cheong, Yuk Fai; Kamata, Akihito

    2013-01-01

    In this article, we discuss and illustrate two centering and anchoring options available in differential item functioning (DIF) detection studies based on the hierarchical generalized linear and generalized linear mixed modeling frameworks. We compared and contrasted the assumptions of the two options, and examined the properties of their DIF…

  17. The BirthPlace collaborative practice model: results from the San Diego Birth Center Study.

    PubMed

    Swartz; Jackson; Lang; Ecker; Ganiats; Dickinson; Nguyen

    1998-07-01

    Objective: The search for quality, cost-effective health care programs in the United States is now a major focus in the era of health care reform. New programs need to be evaluated as alternatives are developed in the health care system. The BirthPlace program provides comprehensive perinatal services with certified nurse-midwives and obstetricians working together in an integrated collaborative practice serving a primarily low-income population. Low-risk women are delivered by nurse-midwives in a freestanding birth center (The BirthPlace), which is one component of a larger integrated health network. All others are delivered by team obstetricians at the affiliated tertiary hospital. Wellness, preventive measures, early intervention, and family involvement are emphasized. The San Diego Birth Center Study is a 4-year research project funded by the U.S. Federal Agency for Health Care Policy and Research (#R01-HS07161) to evaluate this program. The National Birth Center Study (NEJM, 1989; 321(26): 1801-11) described the advantages and safety of freestanding birth centers. However, a prospective cohort study with a concurrent comparison group of comparable risk had not been conducted on a collaborative practice-freestanding birth center model to address questions of safety, cost, and patient satisfaction.Methods: The specific aims of this study are to compare this collaborative practice model to the traditional model of perinatal health care (physician providers and hospital delivery). A prospective cohort study comparing these two health care models was conducted with a final expected sample size of approximately 2,000 birth center and 1,350 traditional care subjects. Women were recruited from both the birth center and traditional care programs (private physicians offices and hospital based clinics) at the beginning of prenatal care and followed through the end of the perinatal period. Prenatal, intrapartum, postpartum and infant morbidity and mortality are being

  18. Implementation of a real option in a sustainable supply chain: an empirical study of alkaline battery recycling

    NASA Astrophysics Data System (ADS)

    Cucchiella, Federica; D'Adamo, Idiano; Gastaldi, Massimo; Lenny Koh, S. C.

    2014-06-01

    Green supply chain management (GSCM) has emerged as a key approach for enterprises seeking to become environmentally sustainable. This paper aims to evaluate and describe the advantages of a GSCM approach by analysing practices and performance consequences in the battery recycling sector. It seeks to integrate works in supply chain management (SCM), environmental management, performance management and real option (RO) theory into one framework. In particular, life cycle assessment (LCA) is applied to evaluate the environmental impact of a battery recycling plant project, and life cycle costing (LCC) is applied to evaluate its economic impact. Firms, also understanding the relevance of GSCM, have often avoided applying the green principles because of the elevated costs that such management involved. Such costs could also seem superior to the potential advantages since standard performance measurement systems are internally and business focused; for these reasons, we consider all the possible value deriving also by uncertainty associated to a green project using the RO theory. This work is one of the few and pioneering efforts to investigate GSCM practices in the battery recycling sector.

  19. Particulate monitoring, modeling, and management: natural sources, long-range transport, and emission control options: a case study of Cyprus

    NASA Astrophysics Data System (ADS)

    Kleanthous, Savvas; Savvides, Chrysanthos; Christofides, Ioannis; Hadjimitsis, Diofantos G.; Themistocleous, Kyriacos; Achilleos, Constantia; Akylas, Evangelos; Demetriadou, Chrystalla; Christodoulides, Pavlos; Douros, Ioannis; Moussiopoulos, Nicolas; Panayiotou, Charalambos; Gregoris, Charalambous; Fedra, Kurt; Kubat, Milan; Mihalopoulos, Nicolaos

    2013-08-01

    The LIFE+ Project PM3: Particulate Monitoring, Modeling, Management is coordinated by the Department of Labour Inspection in Cyprus and funded in part by LIFE+ Environment Policy & Governance. The project aims at the analysis of dust emissions, transport, and control options for Cyprus, as well as at the identification of "natural" contributions (Directive 2008/50/EC). The ultimate objective is to provide inputs for the design of a dust management plan to improve compliance to EC Directives and minimise impacts to human health and environment. This paper presents a short analysis of historical monitoring data and their patterns as well as a description of a dynamic dust entrainment model. The pyrogenic PM10 emissions combined with the wind driven emissions, are subject to a two phase non-linear multi-criteria emission control optimization procedure. The resulting emission scenarios with an hourly resolution provide input to the Comprehensive Air quality Model with extensions (CAMx) 3D fate and transport model, implemented for the 4,800 km master domain and embedded subdomains (270 km around the island of Cyprus and embedded smaller city domains of up to 30 km down to street canyon modeling). The models test the feasibility of candidate emission control solutions over a range of weather conditions. Model generated patterns of local emissions and long-range transport are discussed compared with the monitoring data, remote sensing (MODIS derived AOT), and the chemical analysis of dust samples.

  20. An optional focusing SELENE extension to conventional neutron guides: A case study for the ESS instrument BIFROST

    NASA Astrophysics Data System (ADS)

    Hansen, U. B.; Bertelsen, M.; Stahn, J.; Lefmann, K.

    2017-04-01

    The high brilliance at the European Spallation Source (ESS) will allow for performing experiments with much smaller samples than at present neutron facilities and in much more complex sample environments. However the higher flux also results in higher background from unwanted neutrons not originating from scattering of the sample. We here present a new design idea for beam delivery, where a 165 m ballistic guide system with good transport properties is followed by a 4-8 m SELENE guide system similar to Montel optics used for X-ray optics. We have investigated the system by detailed Monte-Carlo simulations using McStas. We show that under certain conditions, this set-up works surprisingly well, with a brilliance transfer of 20-60% for neutrons of wavelength 4 Å and above. We demonstrate that the guide system is able to focus the beam almost perfectly onto samples sizes in the range of 0.1-2 mm. We furthermore show that our SELENE system is insensitive to gravity and to realistic values of guide waviness. We argue that this guide system can be useful as an optional guide insert when small samples are used in the vicinity of bulky sample environment, e.g. for high-field or high-pressure experiments.

  1. Biomedical communications centers--a profile/evaluation instrument study of underlying standards.

    PubMed

    Glickman, J T; Eicholzer, W A

    1987-01-01

    The "ABCD Profile/Evaluation Instrument" offers directors of individual biomedical communications centers a way to measure their own progress towards meeting standards of excellence. It provides guidelines for review of biomedical communications centers in a model similar to the clinical and basic medical science departments' review. Based on the results of this study, many of the directors seemed to be looking for more formal structure of biomedical communications centers involvement. Use of the Profile/Evaluation Instrument helps address this need and allows discussion in areas such as the department's existence and function in relation to its host institution. In March of 1985, the ABCD used the Profile/Evaluation Instrument standards as parameters of responsibility and service provided by biomedical communications units in its analysis and response to the AAMC GPEP report (Allan and Bradford 1985). The instrument also triggers discussion of new areas of review needed within departments. The process of matching biomedical communications job requirements and assessment training criteria will be explored in the future expansion of the personnel section of the instrument. These and other areas are crucial to the survival and well-being of biomedical communications centers. The "ABCD Profile/Evaluation Instrument" establishes a concrete reference for external review by outside agencies and internal review by administration or the department directors themselves. It offers a continuing body of information that provides the basis for future planning in the field of biomedical communications.

  2. A Icecap Study of the Lithium Trapped-Hole Center in Magnesium Oxide

    NASA Astrophysics Data System (ADS)

    Zuo, Jun

    1990-01-01

    The lithium trapped-hole center in magnesium oxide is an Li^+ ion in the vacancy of an Mg^{2+} ion with a hole trapped at a nearest O^{2-} ion. This defect center has been studied by means of experimental methods and classical simulations. But no quantum-mechanical simulation has been reported. In this work, a quantum-mechanical embedded cluster technique is applied to examine some of the properties of this defect center, using the simulation program package ICECAP, which is the abbreviation for Ionic Crystal with Electronic Clusters, Automatic Program. With this technique, the infinite crystal is simulated as an electronic cluster embedded in a classical shell-model lattice. The electronic cluster (also called defect cluster here), which contains the trapped-hole center, is treated quantum-mechanically by using the unrestricted -Hartree Fock method developed by A. B. Kunz and his co -workers. The second-order many-body-perturbation-theory (MBPT) correlation correction is included in the calculation where feasible. Different types and sizes of defect cluster are used. The equilibrium configurations of the clusters are obtained by energy minimization. The results show very consistently that the Li^+ ion and the O^- ion (the O ^{2-} ion with the trapped hole) move toward each other and the axial O^ {2-} ion moves away from the Li ^+ ion. Also, the contribution of the correlation correction is significant in the determination of the equilibrium configuration.

  3. Expensing options solves nothing.

    PubMed

    Sahlman, William A

    2002-12-01

    The use of stock options for executive compensation has become a lightning rod for public anger, and it's easy to see why. Many top executives grew hugely rich on the back of the gains they made on their options, profits they've been able to keep even as the value they were supposed to create disappeared. The supposed scam works like this: Current accounting regulations let companies ignore the cost of option grants on their income statements, so they can award valuable option packages without affecting reported earnings. Not charging the cost of the grants supposedly leads to overstated earnings, which purportedly translate into unrealistically high share prices, permitting top executives to realize big gains when they exercise their options. If an accounting anomaly is the problem, then the solution seems obvious: Write off executive share options against the current year's revenues. The trouble is, Sahlman writes, expensing option grants won't give us a more accurate view of earnings, won't add any information not already included in the financial statements, and won't even lead to equal treatment of different forms of executive pay. Far worse, expensing evades the real issue, which is whether compensation (options and other-wise) does what it's supposed to do--namely, help a company recruit, retain, and provide the right people with appropriate performance incentives. Any performance-based compensation system has the potential to encourage cheating. Only ethical management, sensible governance, adequate internal control systems, and comprehensive disclosure will save the investor from disaster. If, Sahlman warns, we pass laws that require the expensing of options, thinking that's fixed the fundamental flaws in corporate America's accounting, we will have missed a golden opportunity to focus on the much more extensive defects in the present system.

  4. Socioeconomic impacts: study of a conceptual nuclear energy center at Green River, Utah

    SciTech Connect

    Weaver, R.; Taylor, J.; Burnett, K.; Greenberg, B.

    1982-02-01

    This document constitutes a segment of a feasibility study investigating the ramifications of constructing a nuclear energy center (NEC) in an arid western region. In this phase of the study, the impacts on socioeconomic conditions in the surrounding communities and possible ways of financing and mitigating these impacts were examined. The general conclusion reached is that the socioeconomic impacts of a nuclear energy center in the Green River area of Southeastern Utah would not impose an absolute bar to NEC development. The economy of the NEC impact area would be substantially transformed by the NEC. In particular, Green River city itself would change from its current status as a relatively stable rural economy with an agricultural, mining, and recreation base to a major city with over 20,000 permanent relatively high income residents. The NEC, by itself, would provide a tax base more than adequate to finance required expansion of public facilities and public human service provisions.

  5. Patient Satisfaction with Spanish Pain Centers: Observational Study with More than 3,000 Patients

    PubMed Central

    Hernández-Puiggròs, Patricia; Tesedo Nieto, Javier; Acín Lázaro, María Pilar; Carrera González, Alfredo; Soler, Miguel José Arranz; Maldonado Vega, Sergio

    2016-01-01

    Chronic pain is a serious problem in Spain. This multicenter, epidemiological 3-month follow-up study investigates pain management efficacy in Spanish centers using patient satisfaction criteria. 3,414 eligible adult patients (65,6% female) with moderate to severe chronic pain from 146 pain centers were included. Patient satisfaction was assessed based onto question 18 of Spanish healthcare barometer-CSI. Pain evolution (Brief Pain Inventory-Short Form (BPI-SF) and visual analog scale (VAS)), quality of life/EuroQol-5, and pain control expectations fulfillment were also assessed. Mean age was 61.3 years. 64.4% of participating centers employed multidisciplinary pain management approach. After 3 months, mean patient satisfaction was 7.8 (1–10) on the CIS barometer. Medical staff received the highest scores, whereas waiting for tests, appointment request to appointment date time, and waiting times at the center the lowest. Mean pain decreased from 7.4 to 4.0; BPI-SF intensity decreased from 6.5 to 3.8; pain control expectations were met in 78.7% of patients; EuroQoL-5D utility index increased from 0.37 to 0.62, p < 0.001, and health status (VAS) from 40.6 to 61.9, p < 0.001. Chronic pain patients (90%) are satisfied with Spanish centers care; 80% had their pain control expectations met. Quality of life improved remarkably: 71% felt moderately to significantly better. However, waiting times need improvement. PMID:27516902

  6. Feminist health care in a hostile environment: a case study of the Womancare Health Center.

    PubMed

    Hyde, Cheryl A

    2008-01-01

    This article presents a case study of the Womancare Health Center in order to illustrate the development of and challenges to the feminist health movement in the United States. Specific attention is placed on the legislative, fiscal, and direct actions by the New Right against this organization. Analysis focuses on the means through which Womancare survived. The repercussions of constant intimidation and harassment for women's health programs and for health care policy overall are discussed.

  7. The Lathrop Wells volcanic center: Status of field and geochronology studies

    SciTech Connect

    Crowe, B.; Morley, R.; Wells, S.; Geissman, J.; McDonald, E.; McFadden, L.; Perry, F.; Murrell, M.; Poths, J.; Forman, S.

    1992-03-01

    The purpose of this paper is to describe the status of field and geochronology studies of the Lathrop Wells volcanic center. Our perspective is that it is critical to assess all possible methods for obtaining cross-checking data to resolve chronology and field problems. It is equally important to consider application of the range of chronology methods available in Quaternary geologic research. Such an approach seeks to increase the confidence in data interpretations through obtaining convergence among separate isotopic, radiogenic, and age-correlated methods. Finally, the assumptions, strengths, and weaknesses of each dating method need to be carefully described to facilitate an impartial evaluation of results. The paper is divided into two parts. The first part describes the status of continuing field studies for the volcanic center for this area south of Yucca Mountain, Nevada. The second part presents an overview of the preliminary results of ongoing chronology studies and their constraints on the age and stratigraphy of the Lathrop Wells volcanic center. Along with the chronology data, the assumptions, strengths, and limitations of each methods are discussed.

  8. LORIS: a web-based data management system for multi-center studies

    PubMed Central

    Das, Samir; Zijdenbos, Alex P.; Harlap, Jonathan; Vins, Dario; Evans, Alan C.

    2012-01-01

    Longitudinal Online Research and Imaging System (LORIS) is a modular and extensible web-based data management system that integrates all aspects of a multi-center study: from heterogeneous data acquisition (imaging, clinical, behavior, and genetics) to storage, processing, and ultimately dissemination. It provides a secure, user-friendly, and streamlined platform to automate the flow of clinical trials and complex multi-center studies. A subject-centric internal organization allows researchers to capture and subsequently extract all information, longitudinal or cross-sectional, from any subset of the study cohort. Extensive error-checking and quality control procedures, security, data management, data querying, and administrative functions provide LORIS with a triple capability (1) continuous project coordination and monitoring of data acquisition (2) data storage/cleaning/querying, (3) interface with arbitrary external data processing “pipelines.” LORIS is a complete solution that has been thoroughly tested through a full 10 year life cycle of a multi-center longitudinal project1 and is now supporting numerous international neurodevelopment and neurodegeneration research projects. PMID:22319489

  9. Pediatric lymphatic malformations: evolving understanding and therapeutic options.

    PubMed

    Defnet, Ann M; Bagrodia, Naina; Hernandez, Sonia L; Gwilliam, Natalie; Kandel, Jessica J

    2016-05-01

    Multimodal treatment of lymphatic malformations continues to expand as new information about the biology and genetics of these lesions is discovered, along with knowledge gained from clinical practice. A patient-centered approach, ideally provided by a multidisciplinary medical and surgical team, should guide timing and modality of treatment. Current treatment options include observation, surgery, sclerotherapy, radiofrequency ablation, and laser therapy. New medical and surgical therapies are emerging, and include sildenafil, propranolol, sirolimus, and vascularized lymph node transfer. The primary focus of management is to support and optimize these patients' quality of life. Researchers continue to study lymphatic malformations with the goal of increasing therapeutic options and developing effective clinical pathways for these complicated lesions.

  10. The Optional VenaTech{sup Trade-Mark-Sign} Convertible{sup Trade-Mark-Sign} Vena Cava Filter: Experimental Study in Sheep

    SciTech Connect

    Le Blanche, Alain F.; Ricco, Jean-Baptiste; Bonneau, Michel; Reynaud, Philippe

    2012-10-15

    Purpose: Retrieval of optional caval filters may be impaired by filter tilting, migration, fracture, or embedding in the IVC wall. The goal of this experimental study was to evaluate a new optional filter, convertible by unlocking and removing the filter head. Methods: Forty-nine Pre-Alp sheep (average weight, 55 kg) were anesthetized. IVC was catheterized via the right femoral vein (n = 46) or via the internal jugular vein (n = 3) with a 12.9-F sheath. VenaTech{sup Trade-Mark-Sign} Convertible{sup Trade-Mark-Sign} IVC filters were inserted as either permanent filters (n = 14) or as filters to be converted. Conversion was immediately after deployment (n = 19) or delayed after 1, 3, or 6 months (n = 20). Filter delivery, deployment, and conversion with measurement of migration and tilting were evaluated by cavography. Incorporation of the filter's stabilizers and arms in the IVC wall was assessed by gross anatomy. Results: Delivery system insertion, filter release, and immediate conversion were successful in all cases. Delayed conversion was completed in all but one sheep, due to insufficient snare tension. Complimentary balloon-catheter inflation was required in 12 of 20 delayed conversions to achieve filter opening. In all 49 sheep, no thrombosis, migration, or significant tilting occurred. Within 4 weeks of conversion, the filter's stabilizers and arms were incorporated into the IVC wall. Upon removal, the filter head was free of intimal growth. Conclusions: The VenaTech{sup Trade-Mark-Sign} Convertible{sup Trade-Mark-Sign} optional IVC filter was successfully implanted in all sheep with no migration or tilting. Conversion at various dates by filter head removal was feasible in all but one case.

  11. Treatment Options Summary

    MedlinePlus

    ... imaging Typical Advantages of Microsurgery over Radiation Typical Advantages of Microsurgery over Radiation Surgery removes the tumor ... area. Typical Advantages of Radiation over Microsurgery Typical Advantages of Radiation over Microsurgery Good option for patients ...

  12. Life Options Rehabilitation Program

    MedlinePlus

    ... at our CE credit website . Free Life Options Materials Download our free print materials, research-based fact ... sheets are also available in Spanish! Vaccination Education Materials Easy-to-read patient education fact sheets will ...

  13. Suicide prevention by lithium SUPLI--challenges of a multi-center prospective study.

    PubMed

    Lauterbach, Erik; Ahrens, Bernd; Felber, Werner; Oerlinghausen, Bruno Muller; Kilb, Birgit; Bischof, Gerd; Heuser, Isabella; Werner, Petra; Hawellek, Barbara; Maier, Wolfgang; Lewitzka, Ute; Pogarell, Oliver; Hegerl, Ulrich; Bronisch, Thomas; Richter, Kneginja; Niklewski, Günther; Broocks, Andreas; Hohagen, Fritz

    2005-01-01

    Several studies have shown that there is a significantly increased risk of suicide related mortality in patients with a positive history of suicide attempts. The SUPLI-Study is the first prospective, randomized, double blind, placebo controlled multi-center trial focusing on the proposed suicide preventive effects of lithium in patients with suicidal behavior but not suffering from bipolar disorder or recurrent major depressive disorder. Patients with a recent history of a suicide attempt are treated with lithium versus placebo during a 12 month period. The hypothesis is that lithium treatment will lead to a 50% reduction of suicidal behavior. The protocol of the study and preliminary results are presented.

  14. Design and methods in a multi-center case-control interview study.

    PubMed Central

    Hartge, P; Cahill, J I; West, D; Hauck, M; Austin, D; Silverman, D; Hoover, R

    1984-01-01

    We conducted a case-control study in ten areas of the United States in which a total of 2,982 bladder cancer patients and 5,782 population controls were interviewed. We employed a variety of existing and new techniques to reduce bias and to monitor the quality of data collected. We review here many of the design elements and field methods that can be generally applied in epidemiologic studies, particularly multi-center interview studies, and explain the reasons for our selection of the methods, instruments, and procedures used. PMID:6689843

  15. Options for fuel management

    SciTech Connect

    Reardon, L.D. Jr.; Chance, R.C.

    1996-12-31

    The key to cofiring wood or other biomass with coal in existing power stations is fuel management. Fuel management includes the procurement, receiving, processing, storage, and blending of the biomass with coal. Procurement options may include the purchase of lower cost biomass fuels, receipt of subsidies to make capital modifications to cofire biomass {open_quotes}waste{close_quotes} fuels or receive tipping fees where biomass waste disposal options for a particular area are expensive. Biomass receiving options include delivery methods, unloading, measurement, and inspection. Processing options are associated with screen types, drying systems, final particle size required, and associated questions of fuel supply reliability. Issues include the ability of the coal yard to accept this processing operation, handling convenience, traffic patterns, staffing requirements, and ultimately the cost of fuel at the burner. Issues associated with storage include locating the facility, managing dust, managing moisture pick-up, and managing runoff. Blending options include pre-blending or designing a system to blend the fuels as they are transported from the coal yard to the bunkers. This paper reviews the major decisions that have to be made, and discusses some of the options available. It draws upon existing experience in cofiring systems to achieve a low cost, high reliability system to use biomass at coal-fired electricity generating stations.

  16. A qualitative study of the experience of CenteringPregnancy group prenatal care for physicians

    PubMed Central

    2013-01-01

    Background This study sought to understand the central meaning of the experience of group prenatal care for physicians who were involved in providing CenteringPregnancy through a maternity clinic in Calgary, Canada. Method The study followed the phenomenological qualitative tradition. Three physicians involved in group prenatal care participated in a one-on-one interview between November and December 2009. Two physicians participated in verification sessions. Interviews followed an open ended general guide and were audio recorded and transcribed. The purpose of the analysis was to identify meaning themes and the core meaning experienced by the physicians. Results Six themes emerged: (1) having a greater exchange of information, (2) getting to knowing, (3) seeing women get to know and support each other, (4) sharing ownership of care, (5) having more time, and (6) experiencing enjoyment and satisfaction in providing care. These themes contributed to the core meaning for physicians of “providing richer care.” Conclusions Physicians perceived providing better care and a better professional experience through CenteringPregnancy compared to their experience of individual prenatal care. Thus, CenteringPregnancy could improve work place satisfaction, increase retention of providers in maternity care, and improve health care for women. PMID:23445867

  17. Trap and recombination centers study in sprayed Cu2ZnSnS4 thin films

    NASA Astrophysics Data System (ADS)

    Courel, Maykel; Vigil-Galán, O.; Jiménez-Olarte, D.; Espíndola-Rodríguez, M.; Saucedo, E.

    2014-10-01

    In this work, a study of trap and recombination center properties in polycrystalline Cu2ZnSnS4 thin films is carried out in order to understand the poor performance in Cu2ZnSnS4 thin film solar cells. Thermally stimulated current has been studied in Cu2ZnSnS4 deposited by pneumatic spray pyrolysis method using various heating rates, in order to gain information about trap centers and/or deep levels present within the band-gap of this material. A set of temperature-dependent current curves revealed three levels with activation energy of 126 ± 10, 476 ± 25, and 1100 ± 100 meV. The possible nature of the three levels found is presented, in which the first one is likely to be related to CuZn antisites, while second and third to Sn vacancies and SnCu antisites, respectively. The values of frequency factor, capture cross section, and trap concentration have been determined for each center.

  18. Deep levels of vacancy-hydrogen centers in silicon studied by Laplace DLTS

    NASA Astrophysics Data System (ADS)

    Bonde Nielsen, K.; Dobaczewski, L.; Goscinski, K.; Bendesen, R.; Andersen, Ole; Bech Nielsen, B.

    1999-12-01

    We identify the acceptor levels (-/0) of the VH and V2H defects in silicon from comparison of DLTS and EPR annealing data. The levels are very close to each other and close to the acceptor level of the PV defect (the E-center) as well. In order to separate them, we have applied the high-resolution technique of Laplace DLTS and compared the formation and annealing properties of defects generated by implantation of hydrogen or helium. We further applied Laplace DLTS in combination with uniaxial stress to study the acceptor level at Ec-Et=0.31 eV previously assigned to a vacancy-hydrogen-oxygen defect. We find, in accordance with recent EPR measurements, that the defect displays orthorhombic-I symmetry and rule out that it contains two hydrogen atoms. The defect can be understood as a single hydrogen atom bound inside the A-center, the well-known VO defect of silicon, and we denote it VOH accordingly. The observed orthorhombic-I symmetry arises because the hydrogen atom (at T=160 K) swiftly jumps among two equivalent sites across the (1 1 0) plane that contains the Si-O-Si bond. Previous studies have shown that hydrogenation of oxygen-rich electron-irradiated samples leads to the formation of VOH with simultaneous depletion of the A-center. Our structural data are in accordance with this dynamic behavior.

  19. Bacteriologic Profile of Pericardial Infections After Cardiac Surgery: Study in an Iranian Cardiovascular Tertiary Care Center

    PubMed Central

    Mozaffari, Kambiz; Bakhshandeh, Hooman; Soudi, Hengameh

    2014-01-01

    Background: Bacterial pericarditis is an important cause of post-surgery mortality and morbidity. This can be a preventable complication and the involved pathogens vary according to the time and location. Objectives: The aim of this study was to investigate the bacteriologic profile in patients with pericardial infections after cardiac surgery in the largest tertiary care center for cardiovascular diseases in Iran. The results can be applied for prevention, diagnosis, and treatment of similar patients in Iran. Patients and Methods: This prospective study was performed in Rajaie Cardiovascular Medical and Research Center (RCMRC), the largest tertiary care center for cardiovascular disease in Iran from March 2011 to March 2012. Patients who had undergone cardiac surgery with cardiopulmonary bypass and showed suggestive sign and symptoms of pericardial infections were registered and samples from their pericardial fluids were obtained to perform standard bacteriologic and antibiogram tests. Results: A total of 158 patients were registered. Bacteriologic findings were positive in 30 patients (19%). Staphylococcus epidermidis was the most frequent isolated organism, which was found in 22 patients (73.3%) with eight of them being methicillin-resistant strains. Conclusions: The bacteriologic profile in our patient is specific to our own community. Knowledge about this profile can help us to improve prevention, diagnosis, and treatment of the affected patients. PMID:25478545

  20. Space Operations Center, Shuttle Interaction Study. Volume 2: Appendices, Book 1 of 2

    NASA Technical Reports Server (NTRS)

    1981-01-01

    The feasibility of shuttle orbiter docking to the Space Operations Center (SOC) is studied. The in-orbit relative motion of the free flying orbiter and SOC was simulated, accounting for the Orbiter RCS and digital autopilot (DAP) systems, orbital mechanics, center of gravity offset of the orbiter docking port, aero and gravity gradient effects, and other pertinent natural and man-made phenomena. Since there is no specified flight path and procedure for docking, terminal closure sensitivities were investigated. Orbiter approach direction, Orbiter approach attitude out of plane, DAP thruster compensation mode, final ballistic docking distance and time to dock, rate and excursion attitude deadbands, and selection of various thruster combinations (differing from nominal) for translational pulses are considered.

  1. Low-level radioactive waste disposal. Study of a conceptual nuclear energy center at Green River, Utah. [Comparison of on-site disposal and transport to nearest commercial disposal site

    SciTech Connect

    Card, D.H.; Hunter, P.H.; Barg, D.; de Souza, F.; Felthauser, K.; Winkler, V.; White, R.

    1982-02-01

    This document constitutes a segment of a feasibility study investigating the ramifications of constructing a nuclear energy center in an arid western region. In this phase of the study, the alternatives for disposing of the low-level waste on the site are compared with the alternative of transporting the waste to the nearest commercial waste disposal site for permanent disposal. Both radiological and nonradiological impacts on the local socioeconomic infrastructure and the environment are considered. Disposal on the site was found to cost considerably less than off-site disposal with only negligible impacts associated with the disposal option on either mankind or the environment.

  2. Self-centering seismic retrofit scheme for reinforced concrete frame structures: SDOF system study

    NASA Astrophysics Data System (ADS)

    Zhang, Yunfeng; Hu, Xiaobin

    2010-06-01

    This paper presents the results of a parametric study of self-centering seismic retrofit schemes for reinforced concrete (RC) frame buildings. The self-centering retrofit system features flag-shaped hysteresis and minimal residual deformation. For comparison purpose, an alternate seismic retrofit scheme that uses a bilinear-hysteresis retrofit system such as buckling-restrained braces (BRB) is also considered in this paper. The parametric study was carried out in a single-degree-of-freedom (SDOF) system framework since a multi-story building structure may be idealized as an equivalent SDOF system and investigation of the performance of this equivalent SDOF system can provide insight into the seismic response of the multi-story building. A peak-oriented hysteresis model which can consider the strength and stiffness degradation is used to describe the hysteretic behavior of RC structures. The parametric study involves two key parameters — the strength ratio and elastic stiffness ratio between the seismic retrofit system and the original RC frame. An ensemble of 172 earthquake ground motion records scaled to the design basis earthquake in California with a probability of exceedance of 10% in 50 years was constructed for the simulation-based parametric study. The effectiveness of the two seismic retrofit schemes considered in this study is evaluated in terms of peak displacement ratio, peak acceleration ratio, energy dissipation demand ratio and residual displacement ratio between the SDOF systems with and without retrofit. It is found from this parametric study that RC structures retrofitted with the self-centering retrofit scheme (SCRS) can achieve a seismic performance level comparable to the bilinear-hysteresis retrofit scheme (BHRS) in terms of peak displacement and energy dissipation demand ratio while having negligible residual displacement after earthquake.

  3. Pyroprocessing of Oxidized Sodium-Bonded Fast Reactor Fuel -- an Experimental Study of Treatment Options for Degraded EBR-II Fuel

    SciTech Connect

    S. D. Herrmann; L. A. Wurth; N. J. Gese

    2013-09-01

    An experimental study was conducted to assess pyrochemical treatment options for degraded EBR-II fuel. As oxidized material, the degraded fuel would need to be converted back to metal to enable electrorefining within an existing electrometallurgical treatment process. A lithium-based electrolytic reduction process was studied to assess the efficacy of converting oxide materials to metal with a particular focus on the impact of zirconium oxide and sodium oxide on this process. Bench-scale electrolytic reduction experiments were performed in LiCl-Li2O at 650 °C with combinations of manganese oxide (used as a surrogate for uranium oxide), zirconium oxide, and sodium oxide. The experimental study illustrated how zirconium oxide and sodium oxide present different challenges to a lithium-based electrolytic reduction system for conversion of select metal oxides to metal.

  4. Global Assessment of Hydrogen Technologies – Tasks 3 & 4 Report Economic, Energy, and Environmental Analysis of Hydrogen Production and Delivery Options in Select Alabama Markets: Preliminary Case Studies

    SciTech Connect

    Fouad, Fouad H.; Peters, Robert W.; Sisiopiku, Virginia P.; Sullivan Andrew J.; Gillette, Jerry; Elgowainy, Amgad; Mintz, Marianne

    2007-12-01

    This report documents a set of case studies developed to estimate the cost of producing, storing, delivering, and dispensing hydrogen for light-duty vehicles for several scenarios involving metropolitan areas in Alabama. While the majority of the scenarios focused on centralized hydrogen production and pipeline delivery, alternative delivery modes were also examined. Although Alabama was used as the case study for this analysis, the results provide insights into the unique requirements for deploying hydrogen infrastructure in smaller urban and rural environments that lie outside the DOE’s high priority hydrogen deployment regions. Hydrogen production costs were estimated for three technologies – steam-methane reforming (SMR), coal gasification, and thermochemical water-splitting using advanced nuclear reactors. In all cases examined, SMR has the lowest production cost for the demands associated with metropolitan areas in Alabama. Although other production options may be less costly for larger hydrogen markets, these were not examined within the context of the case studies.

  5. Study of methods of improving the performance of the Langley Research Center Transonic Dynamics Tunnel (TDT)

    NASA Technical Reports Server (NTRS)

    1973-01-01

    A study has been made of possible ways to improve the performance of the Langley Research Center's Transonic Dynamics Tunnel (TDT). The major effort was directed toward obtaining increased dynamic pressure in the Mach number range from 0.8 to 1.2, but methods to increase Mach number capability were also considered. Methods studied for increasing dynamic pressure capability were higher total pressure, auxiliary suction, reducing circuit losses, reduced test medium temperature, smaller test section and higher molecular weight test medium. Increased Mach number methods investigated were nozzle block inserts, variable geometry nozzle, changes in test section wall configuration, and auxiliary suction.

  6. 1993 study of long-billed curlews on the Yakima Training Center

    SciTech Connect

    Hand, K.D.; Cadwell, L.L.

    1994-04-01

    Pacific Northwest Laboratory conducted a study for the US Department of the Army on long-billed curlews (Numenius americanus) on the Yakima Training Center (YTC) in the spring and summer of 1993. Long-billed curlews are a Class IIIc federal candidate species and are listed as a ``species of special concern`` by the Washington Department of Wildlife. The objectives of this study were to (1) locate major nesting areas, (2) locate brood rearing areas, (3) evaluate habitat requirements, (4) determine diet, (5) evaluate response to troop activities, (6) estimate population size, (7) estimate recruitment rates, and (8) establish a relative abundance survey method.

  7. National Aeronautics and Space Administration Manned Spacecraft Center data base requirements study

    NASA Technical Reports Server (NTRS)

    1971-01-01

    A study was conducted to evaluate the types of data that the Manned Spacecraft Center (MSC) should automate in order to make available essential management and technical information to support MSC's various functions and missions. In addition, the software and hardware capabilities to best handle the storage and retrieval of this data were analyzed. Based on the results of this study, recommendations are presented for a unified data base that provides a cost effective solution to MSC's data automation requirements. The recommendations are projected through a time frame that includes the earth orbit space station.

  8. Value of Distributed Energy Options for Congested Transmission/Distribution Systems in the Southeastern United States: Mississippi and Florida Case Studies; January 1999-December 2001

    SciTech Connect

    McCusker, S. A.; Siegel, J. S.

    2002-03-01

    This report explores the ability of distributed generation (DG) options to provide cost-effective alternatives to central station generation, transmission, and distribution upgrades for alleviating transmission and distribution congestion. The need for this study was driven by three major factors: (1) DOE's DG program, while quite successful in showing the value of DG in large portions of the United States, has been less successful in the Southeast, likely because of the low energy prices, high excess electrical capacity, and lack of electricity deregulation in the region. (2) Lack of DG-related analysis that uses real world data on specific sites that can be used as good indicators of the issues and benefits of DG. (3) Interest on behalf of DOE in analysis in two southern states that can be used to show the value of DG to several key Congressional officials from the states. To demonstrate this ability for constrained sites in systems in the states of Florida and Mississippi, the Electricity Asset Evaluation Model (EAEM) is used to assess the costs and benefits of installing DG options to reduce load in areas with transmission congestion versus upgrading the transmission and distribution (T&D) systems.

  9. Traumatic Brain Injury Practice-Based Evidence Study: Design and Patients, Centers, Treatments, and Outcomes

    PubMed Central

    Horn, Susan D.; Corrigan, John D.; Bogner, Jennifer; Hammond, Flora M.; Seel, Ronald T.; Smout, Randall J.; Barrett, Ryan S.; Dijkers, Marcel P.; Whiteneck, Gale G.

    2015-01-01

    Objective To describe study design, patients, centers, treatments, and outcomes of a traumatic brain injury (TBI) practice-based evidence (PBE) study and to evaluate the generalizability of the findings to the US TBI inpatient rehabilitation population. Design Prospective, longitudinal observational study Setting 10 inpatient rehabilitation centers (9 US, 1 Canada) Participants Patients (n=2130) enrolled between October 2008 and Sept 2011, and admitted for inpatient rehabilitation after an index TBI injury Interventions Not applicable Main Outcome Measures Return to acute care during rehabilitation, rehabilitation length of stay, Functional Independence Measure (FIM) at discharge, residence at discharge, and 9 months post-discharge rehospitalization, FIM, participation, and subjective wellbeing. Results Level of admission FIM Cognitive score was found to create relatively homogeneous subgroups for subsequent analysis of best treatment combinations. There were significant differences in patient and injury characteristics, treatments, rehabilitation course, and outcomes by admission FIM Cognitive subgroups. TBI-PBE study patients overall were similar to US national TBI inpatient rehabilitation populations. Conclusions This TBI-PBE study succeeded in capturing naturally occurring variation within patients and treatments, offering opportunities to study best treatments for specific patient deficits. Subsequent papers in this issue report differences between patients and treatments and associations with outcomes in greater detail. PMID:26212396

  10. Architectural Options for a Future Deep Space Optical Communications Network

    NASA Technical Reports Server (NTRS)

    Edwards, B. L.; Benjamin, T.; Scozzafava, J.; Khatri, F.; Sharma, J.; Parvin, B.; Liebrecht, P. E.; Fitzgerald, R. J.

    2004-01-01

    This paper provides an overview of different options at Earth to provide Deep Space optical communication services. It is based mainly on work done for the Mars Laser Communications Demonstration (MLCD) Project, a joint project between NASA's Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory, California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL). It also reports preliminary conclusions from the Tracking and Data Relay Satellite System Continuation Study at GSFC. A lasercom flight terminal will be flown on the Mars Telecommunications Orbiter (MTO) to be launched by NASA in 2009, and will be the first high rate deep space demonstration of this revolutionary technology.

  11. Pediatric Glaucoma: Pharmacotherapeutic Options.

    PubMed

    Samant, Monica; Medsinge, Anagha; Nischal, Ken K

    2016-06-01

    Childhood glaucoma is a major therapeutic challenge for pediatric ophthalmologists and glaucoma specialists worldwide. Management depends on the etiology and age at presentation. A variety of drugs are available for the control of intraocular pressure in children; however, none of these drugs have been licensed by the regulatory agencies for use in children. Furthermore, evidence gained from randomized controlled trials in the pediatric population is sparse, and little is known regarding the use of newer anti-glaucoma preparations. This evidence-based review aims to discuss the available pharmacotherapeutic options for glaucoma in children. Topical adrenoceptor blockers, topical and systemic carbonic anhydrase inhibitors, prostaglandin (PG) analogs, adrenoceptor agonists, parasympathomimetics, and combined preparations are available for use in children, but usually as an off-label indication. Therefore, it is important to recognize that serious side effects have been reported, even with topical drops, and measures to reduce systemic absorption should be taken. Most drugs have been shown to have comparable ocular hypotensive effects, with the lowest occurrence of systemic side effects with PG analogs. Whereas a newly introduced prostaglandin analog, tafluprost, and some other preservative-free preparations have shown promising results in adult glaucoma patients, no pediatric reports are available as yet. Future studies may describe their role in treating pediatric glaucoma. This review also shares some suggested treatment pathways for primary congenital glaucoma (PCG), juvenile open angle glaucoma (JOAG), developmental glaucoma, aphakic/pseudophakic glaucoma, and uveitic glaucoma.

  12. Positron annihilation study for enhanced nitrogen-vacancy center formation in diamond by electron irradiation at 77 K

    SciTech Connect

    Tang, Z.; Chiba, T.; Nagai, Y.; Inoue, K.; Toyama, T.; Hasegawa, M.

    2014-04-28

    A compact ensemble of high density nitrogen-vacancy (NV) centers in diamond is essential to sense various external fields with a high precision at the nanoscale. Here, defects in type IIa and type Ib diamonds induced by 28 MeV electron irradiation at 77 K were studied by combining the positron annihilation spectroscopy and first-principles calculations. It is shown that the electron irradiation at 77 K can significantly enhance the NV center formation by directly converting 24% vacancies into the NV centers, indicating that it is an efficient way to produce the high density NV centers in the type Ib diamond.

  13. 20 CFR 416.2035 - Optional supplementation: Additional State options.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 20 Employees' Benefits 2 2011-04-01 2011-04-01 false Optional supplementation: Additional State options. 416.2035 Section 416.2035 Employees' Benefits SOCIAL SECURITY ADMINISTRATION SUPPLEMENTAL... § 416.2035 Optional supplementation: Additional State options. (a) Residency requirement. A State...

  14. 20 CFR 416.2035 - Optional supplementation: Additional State options.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Optional supplementation: Additional State options. 416.2035 Section 416.2035 Employees' Benefits SOCIAL SECURITY ADMINISTRATION SUPPLEMENTAL... § 416.2035 Optional supplementation: Additional State options. (a) Residency requirement. A State...

  15. 20 CFR 416.2035 - Optional supplementation: Additional State options.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 20 Employees' Benefits 2 2012-04-01 2012-04-01 false Optional supplementation: Additional State options. 416.2035 Section 416.2035 Employees' Benefits SOCIAL SECURITY ADMINISTRATION SUPPLEMENTAL... § 416.2035 Optional supplementation: Additional State options. (a) Residency requirement. A State...

  16. 20 CFR 416.2035 - Optional supplementation: Additional State options.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 20 Employees' Benefits 2 2013-04-01 2013-04-01 false Optional supplementation: Additional State options. 416.2035 Section 416.2035 Employees' Benefits SOCIAL SECURITY ADMINISTRATION SUPPLEMENTAL... § 416.2035 Optional supplementation: Additional State options. (a) Residency requirement. A State...

  17. 20 CFR 416.2035 - Optional supplementation: Additional State options.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 20 Employees' Benefits 2 2014-04-01 2014-04-01 false Optional supplementation: Additional State options. 416.2035 Section 416.2035 Employees' Benefits SOCIAL SECURITY ADMINISTRATION SUPPLEMENTAL... § 416.2035 Optional supplementation: Additional State options. (a) Residency requirement. A State...

  18. Building the Resource Base: Economic, Political, and Practical Options in the U.S. Written Composition Study.

    ERIC Educational Resources Information Center

    Herman, Joan L.; Baker, Eva L.

    Without support, financial, organizational and otherwise, the U.S. national IEA writing study would never have been conducted; however, implementation of the study was difficult. Planning for the study and its support commenced in 1980, coterminous with two important occurrences: the National Institute of Education pulled back on its interest in…

  19. Barriers to colorectal cancer screening in community health centers: A qualitative study

    PubMed Central

    Lasser, Karen E; Ayanian, John Z; Fletcher, Robert H; Good, Mary-Jo DelVecchio

    2008-01-01

    Background Colorectal cancer screening rates are low among disadvantaged patients; few studies have explored barriers to screening in community health centers. The purpose of this study was to describe barriers to/facilitators of colorectal cancer screening among diverse patients served by community health centers. Methods We identified twenty-three outpatients who were eligible for colorectal cancer screening and their 10 primary care physicians. Using in-depth semi-structured interviews, we asked patients to describe factors influencing their screening decisions. For each unscreened patient, we asked his or her physician to describe barriers to screening. We conducted patient interviews in English (n = 8), Spanish (n = 2), Portuguese (n = 5), Portuguese Creole (n = 1), and Haitian Creole (n = 7). We audiotaped and transcribed the interviews, and then identified major themes in the interviews. Results Four themes emerged: 1) Unscreened patients cited lack of trust in doctors as a barrier to screening whereas few physicians identified this barrier; 2) Unscreened patients identified lack of symptoms as the reason they had not been screened; 3) A doctor's recommendation, or lack thereof, significantly influenced patients' decisions to be screened; 4) Patients, but not their physicians, cited fatalistic views about cancer as a barrier. Conversely, physicians identified competing priorities, such as psychosocial stressors or comorbid medical illness, as barriers to screening. In this culturally diverse group of patients seen at community health centers, similar barriers to screening were reported by patients of different backgrounds, but physicians perceived other factors as more important. Conclusion Further study of these barriers is warranted. PMID:18304342

  20. A twin-center study of nasal tip numbness following septorhinoplasty or rhinoplasty.

    PubMed

    Jaberoo, Marie-Claire; De Zoysa, Neil; Mehta, Nishchay; Prasad, Vyas; Heywood, Rebecca; Saleh, Hesham; Marais, Joe

    2016-02-01

    Nasal tip numbness is a recognized postoperative complication after septorhinoplasty and rhinoplasty. We performed a twin-center retrospective study to determine the incidence of short- and long-term (>6 mo) nasal tip numbness after these procedures, and we studied several variables that might have been associated with this complication. Our study group was made up of 65 patients-31 males and 34 females, aged 15 to 67 years (mean: 30.5). Septorhinoplasty had been performed in 52 patients and rhinoplasty in 13; all surgeries were performed by two different surgeons at two different centers. There were 50 closed (endonasal) surgeries and 15 open surgeries. Follow-up phone calls made 6 to 37 months postoperatively revealed that 17 patients had experienced postoperative nasal tip numbness (26.2%); there were 10 cases of short-term numbness (15.4%) and 7 cases of long-term numbness (10.8%). Numbness resolved within 2 weeks in 8 of the 10 short-term patients. Of the 7 cases of long-term numbness, 6 patients reported severe numbness beyond 8 months, and 1 had mild numbness for at least a year. We found no association between the incidence of numbness and the type of surgery, the particular surgeon, or the particular center where the surgery had been performed. We did find that there was an association between long-term numbness and the open procedure, but it was not statistically significant. We discuss the possible mechanisms that might cause numbness in cases when the external nasal nerve is not cut. We believe it is important to include a discussion of the risk of nasal tip numbness during preoperative consultations and when seeking informed consent.

  1. A study of NASA occupational injuries and property damage at Goddard Space Flight Center, Langley Research Center and Headquarters

    NASA Technical Reports Server (NTRS)

    1976-01-01

    Analysis of NASA's accident/injury/illness and health data was performed. The analysis included: (1) an on-site study of the existing data; (2) evaluation of the findings to develop criteria for the subsequent implementation of safety and health standards; (3) preparation of a graphical loss control assessment; and (4) recommendations to reduce accident rates.

  2. Comparison study of gear dynamic computer programs at NASA Lewis Research Center

    NASA Technical Reports Server (NTRS)

    Zakrajsek, James J.

    1989-01-01

    A comparison study was performed on four gear dynamic analysis computer programs developed under NASA/Army sponsorship. These programs are GRDYNMULT (a multimesh program applicable to a number of epicyclic systems), TELSGE (a single mesh program), PGT (a multimesh program applicable to a planetary system with three planets), and DANST (a single mesh program). The capabilities and features, input and output options, and technical aspects of the programs were reviewed and compared. Results are presented in a concise tabular form. Parametric studies of the program models were performed to investigate the predicted results of the programs as input parameters such as speed, torque, and mesh damping were varied. In general, the program models predicted similar dynamic load and stress levels as operating conditions were varied. Flash temperature predictions from programs GRDYNMULT and TELSGE indicated similar trends; however, actual values were not in close agreement. The program GRDYNMULT was found to be the most versatile in system size, type, and analysis capabilities. The programs DANST, TELSGE, and PGT are more specialized for specific systems; however, in specific areas they provide a more detailed treatment than GRDYNMULT.

  3. Life Sciences Division and Center for Human Genome Studies Annual report 1989

    SciTech Connect

    Spitzmiller, D.; Bradbury, M.; Cram, L.S.

    1990-05-01

    This report summarizes the research and development activities of Los Alamos National Laboratory's Life Sciences Division and biological aspects of the Center for Human Genome Studies for the calendar year 1989. Future editions will include all human genome research projects. The technical portion of the report is divided into two parts: selected research highlights, and project descriptions and accomplishments. Research highlights provide a more detailed description of a select set of projects. A technical description of all projects is presented in sufficient detail to permit the informed reader to assess their scope and significance. 2 figs.

  4. The Experience of Perinatal Care at a Birthing Center: A Qualitative Pilot Study

    PubMed Central

    Pewitt, Amber T.

    2008-01-01

    The purpose of this qualitative descriptive pilot study was to describe women's experiences of care and satisfaction at a freestanding birth center. Data were collected through semistructured interviews with seven women who had given birth within 12 months of participant selection. Using qualitative content analysis, three themes emerged: (1) Empowerment, (2) Sense of Motherhood, and (3) Establishing and Strengthening Relationships. Data revealed that women value caring providers, that caring providers may affect positive outcomes, and that those outcomes may lead to a satisfactory experience. PMID:19436419

  5. Report on the feasibility study for improving electric motor service centers in Ghana

    SciTech Connect

    Hsu, J.S.; Jallouk, P.A.; Staunton, R.H.

    1999-12-10

    On March 3 and 4, 1998, a visit was made to Oak Ridge National Laboratory (ORNL) by two officials from Ghana: Mr. I.K. Mintah, Acting Executive Director, Technical Wing, Ministry of Mines and Energy (MOME) and Dr. A.K. Ofosu-Ahenkorah, Coordinator, Energy Efficiency and Conservation Program, MOME. As a result of this visit, Dr. John S. Hsu of ORNL was invited by MOME to visit the Republic of Ghana in order to study the feasibility of improving electric motor service centers in Ghana.

  6. Spin state transition in the active center of the hemoglobin molecule: DFT + DMFT study

    NASA Astrophysics Data System (ADS)

    Novoselov, D.; Korotin, Dm. M.; Anisimov, V. I.

    2016-05-01

    An ab initio study of electronic and spin configurations of the iron ion in the active center of the human hemoglobin molecule is presented. With a combination of the Density Functional Theory (DFT) method and the Dynamical Mean Field Theory (DMFT) approach, the spin state transition description in the iron ion during the oxidation process is significantly improved in comparison with previous attempts. It was found that the origin of the iron ion local moment behavior both for the high-spin and for the low-spin states in the hemoglobin molecule is caused by the presence of a mixture of several atomic states with comparable statistical probability.

  7. AVTA Federal Fleet PEV Readiness Data Logging and Characterization Study for NASA Glenn Research Center

    SciTech Connect

    Schey, Stephen; Francfort, Jim

    2014-10-01

    The Advanced Vehicle Testing Activity’s study seeks to collect and evaluate data to validate the utilization of advanced plug-in electric vehicle (PEV) transportation. This report focuses on the NASA Glenn Research Center (GRC) fleet to identify daily operational characteristics of select vehicles and report findings on vehicle and mission characterizations to support the successful introduction of PEVs into the agencies’ fleets. Individual observations of these selected vehicles provide the basis for recommendations related to electric vehicle adoption and whether a battery electric vehicle or plug-in hybrid electric vehicle (collectively referred to as PEVs) can fulfill the mission requirements.

  8. Hypersonic airbreathing missile concepts under study at NASA Langley Research Center

    NASA Technical Reports Server (NTRS)

    Hunt, J. L.; Johnston, P. J.; Cubbage, J. M.; Dillon, J. L.; Richie, C. B.; Marcum, D. C., Jr.; Carlson, C. H.

    1982-01-01

    The design and performance of several tactical and strategic hypersonic airbreathing missile concepts under study at the NASA Langley Research Center are discussed from an evolutionary perspective. A mid- and chin inlet missile design, constrained to the Navy's vertical box launcher, was investigated; a performance comparison is presented that is favorable to the mid-inlet approach. Parasol wing, confined flow field, and spatula-like cruise missile configurations were examined with strategic applications in mind. The preliminary results are encouraging with respect to aerodynamic and volumetric efficiency and choice of engine integration schemes.

  9. A multisite study of the effectiveness of methamphetamine treatment: an initiative of the Center for Substance Abuse Treatment.

    PubMed

    Herrell, J M; Taylor, J A; Gallagher, C; Dawud-Noursi, S

    2000-01-01

    In 1998, responding to national and regional epidemiological data indicating that methamphetamine (MA) abuse was a growing problem in the United States, the Center for Substance Abuse Treatment (CSAT) initiated a multisite MA treatment study. Through a collaborative approach among CSAT, seven treatment sites, and a coordinating center, the study compares the clinical and cost effectiveness of a manualized, cognitive-behavioral outpatient treatment developed by the Matrix Center in Los Angeles to the treatment approaches currently employed by the treatment sites. The study also explores technology transfer issues associated with integrating the Matrix approach within existing treatment settings. CSAT's approach to the initiation and management of this type of study is discussed.

  10. An Analysis of Factors that Inhibit Business Use of User-Centered Design Principles: A Delphi Study

    ERIC Educational Resources Information Center

    Hilton, Tod M.

    2010-01-01

    The use of user-centered design (UCD) principles has a positive impact on the use of web-based interactive systems in customer-centric organizations. User-centered design methodologies are not widely adopted in organizations due to intraorganizational factors. A qualitative study using a modified Delphi technique was used to identify the factors…

  11. Serving Medically Frail Individuals: Five Case Studies of Deaths of Residents of the Terence Cardinal Cooke Health Care Center.

    ERIC Educational Resources Information Center

    Sundram, Clarence J.

    The deaths of five resident clients at the Terence Cardinal Cooke Health Care Center (New York), a residential program for profoundly impaired and medically fragile individuals with developmental disabilities, in March and April of 1989 were investigated. Methods of study included examination of medical records from the Cooke Center and other…

  12. The Children's Learning Center: A Study of a Self-Manipulative Physical Environment on Early Childhood Learning.

    ERIC Educational Resources Information Center

    Studio of Environmental Technology, Providence, RI.

    The Children's Learning Center in Providence, Rhode Island, is a prototypical teaching/learning environment for preschool children aged 3-5. The center represents the first prototypical application of the Multi-Activity Zones for Education (MAZE) system. This study attempts to demonstrate and test the physical and operational performances of the…

  13. Managing Nuclear Waste: Options Considered

    SciTech Connect

    DOE

    2002-05-02

    Starting in the 1950s, U.S. scientists began to research ways to manage highly radioactive materials accumulating at power plants and other sites nationwide. Long-term surface storage of these materials poses significant potential health, safety, and environmental risks. Scientists studied a broad range of options for managing spent nuclear fuel and high-level radioactive waste. The options included leaving it where it is, disposing of it in various ways, and making it safer through advanced technologies. International scientific consensus holds that these materials should eventually be disposed of deep underground in what is called a geologic repository. In a recent special report, the National Academy of Sciences summarized the various studies and emphasized that geologic disposal is ultimately necessary.

  14. Executive summary. Conceptual studies nuclear energy center Lake Hartwell, S. C. , Phase III

    SciTech Connect

    Not Available

    1981-01-01

    This document summarizes a conceptual study on the feasibility and practicality of developing a nuclear energy center (NEC) at a specific site in the SSEB region. The site selected for this conceptual study is at Lake Hartwell, South Carolina. The conceptual NEC at Lake Hartwell consists of twelve 1250-MW(e) LWRs arranged on the site in four cluster of three units each, know as triads. The nominal distance between triads was selected as 2-1/2 miles. The total electric output of 15,000 MWe to be generated by the NEC would be transmitted to five major utilities in South Carolina, North Carolina, and Georgia. Objective of the study was to assess the technical, socioeconomic, environmental, and institutional issues relating to the NEC at the conceptual study site. The basic finding was that the concept of a NEC on the Lake Hartwell site is feasible, but further analysis of institutional issues and possible legislation would be required.

  15. Thermal test options

    SciTech Connect

    Koski, J.A.; Keltner, N.R.; Sobolik, K.B.

    1993-02-01

    Shipping containers for radioactive materials must be qualified to meet a thermal accident environment specified in regulations, such at Title 10, Code of Federal Regulations, Part 71. Aimed primarily at the shipping container design, this report discusses the thermal testing options available for meeting the regulatory requirements, and states the advantages and disadvantages of each approach. The principal options considered are testing with radiant heat, furnaces, and open pool fires. The report also identifies some of the facilities available and current contacts. Finally, the report makes some recommendations on the appropriate use of these different testing methods.

  16. Fluorosis varied treatment options

    PubMed Central

    Sherwood, I Anand

    2010-01-01

    Fluorosis has been reported way back in 1901. The treatment options for fluorosis are varied depending upon individual cases. This article comes from Madurai in India where its surrounding towns are fluorosis-prone zones. The purpose of this article is to report various treatment options available for dental fluorosis; this is the first time that complete full mouth rehabilitation for dental fluorosis is being reported. This article also dwells on the need for the dentists to be aware of their local indigenous pathologies to treat it in a better manner. PMID:20582220

  17. Implementing the Instructional Coach Role as a Professional Development Option: A Case Study of the Change Process

    ERIC Educational Resources Information Center

    Kubek, Jessica

    2012-01-01

    The overall purpose of this study was to examine the attitudes and participation in professional development activities of key stakeholders as related to the change of position from an Instructional Support Teacher to an Instructional Coach. Specifically, this study aimed to provide a detailed and extensive review of the implementation process and…

  18. Space Transportation Options for the 21st Century

    NASA Technical Reports Server (NTRS)

    Houts, Michael G.

    1999-01-01

    Advanced space transportation options may eventually enable rapid, affordable access to any point in the solar system. Advanced propulsion systems with energy densities several orders of magnitude greater than state-of-the art systems may be available in the 21 st century. These propulsion systems include systems based on fission, fusion, antimatter annihilation, and other advanced processes. Other transportation options propose using in-situ resources to enable rapid, affordable access to any point in the solar system using more conventional propulsion technologies. This presentation will. summarize select space transportation options of current interest to NASA Marshall Space Flight Center's Propulsion Research Center, present progress being made towards developing each of the options, and discuss obstacles that must be overcome before any of the options can be implemented.

  19. X-ray absorption spectroscopic studies of the dinuclear iron center in methane monooxygenase and the sulfure and chlorine centers in photographic materials

    SciTech Connect

    DeWitt, J.G.

    1992-12-01

    The dinuclear iron center of the hydroxylase component of soluble methane monooxygenase (MMO) from Methylococcus capsulatus and Methylosinus trichosporiwn has been studied by X-ray absorption spectroscopy. Analysis of the Fe K-edge EXAFS revealed that the first shell coordination of the Fe(HI)Fe(IH) oxidized state of the hydroxylase from M. capsulatus consists of approximately 6 N and 0 atoms at an average distance of 2.04 [Angstrom]. The Fe-Fe distance was determined to be 3.4 [Angstrom]. No evidence for the presence of a short oxo bridge in the iron center of the oxidized hydroxylase was found, suggesting that the active site of MMO is significantly different from the active sites of the dinuclear iron proteins hemery and ribonucleotide reductase. In addition, the results of the first shell fits suggest that there are more oxygen than nitrogen donor ligands.

  20. X-ray absorption spectroscopic studies of the dinuclear iron center in methane monooxygenase and the sulfure and chlorine centers in photographic materials

    SciTech Connect

    DeWitt, Jane G.

    1992-12-01

    The dinuclear iron center of the hydroxylase component of soluble methane monooxygenase (MMO) from Methylococcus capsulatus and Methylosinus trichosporiwn has been studied by X-ray absorption spectroscopy. Analysis of the Fe K-edge EXAFS revealed that the first shell coordination of the Fe(HI)Fe(IH) oxidized state of the hydroxylase from M. capsulatus consists of approximately 6 N and 0 atoms at an average distance of 2.04 Å. The Fe-Fe distance was determined to be 3.4 Å. No evidence for the presence of a short oxo bridge in the iron center of the oxidized hydroxylase was found, suggesting that the active site of MMO is significantly different from the active sites of the dinuclear iron proteins hemery and ribonucleotide reductase. In addition, the results of the first shell fits suggest that there are more oxygen than nitrogen donor ligands.

  1. Comparative analyses of spent nuclear fuel transport modal options: Transport options under existing site constraints

    SciTech Connect

    Brentlinger, L.A.; Hofmann, P.L.; Peterson, R.W.

    1989-08-01

    The movement of nuclear waste can be accomplished by various transport modal options involving different types of vehicles, transport casks, transport routes, and intermediate intermodal transfer facilities. A series of systems studies are required to evaluate modal/intermodal spent fuel transportation options in a consistent fashion. This report provides total life-cycle cost and life-cycle dose estimates for a series of transport modal options under existing site constraints. 14 refs., 7 figs., 28 tabs.

  2. Fractionated Stereotactic Gamma Knife Radiosurgery for Large Brain Metastases: A Retrospective, Single Center Study

    PubMed Central

    Park, Hye Ran; Lee, Jae Meen; Kim, Jin Wook; Chung, Hyun-Tai; Kim, Dong Gyu; Jung, Hee-Won

    2016-01-01

    Purpose Stereotactic radiosurgery (SRS) is widely used for brain metastases but has been relatively contraindicated for large lesions (>3 cm). In the present study, we analyzed the efficacy and toxicity of hypofractionated Gamma Knife radiosurgery to treat metastatic brain tumors for which surgical resection were not considered as the primary treatment option. Methods and Materials Thirty-six patients, forty cases were treated with Gamma Knife-based fractionated SRS for three to four consecutive days with the same Leksell frame on their heads. The mean gross tumor volume was 18.3 cm³, and the median dose was 8 Gy at 50% isodose line with 3 fractions for three consecutive days (range, 5 to 11 Gy and 2 to 4 fractions for 2 to 4 consecutive days). Survival rates and prognostic factors were analyzed. Results The overall survival rate at one and two years was 66.7 and 33.1%, respectively. The median survival time was 16.2 months, and the local control rate was 90%. RTOG toxicity grade 1 was observed in 3 (8.3%) patients, grade 2 in 1 (2.7%) patient and grade 3 in 1 (2.7%) patient respectively. Radiation necrosis was developed in 1 (2.7%) patient. KPS scores and control of primary disease resulted in significant differences in survival. Conclusions Our findings suggest that consecutive hypofractionated Gamma Knife SRS could be applied to large metastatic brain tumors with effective tumor control and low toxicity rates. PMID:27661613

  3. The Einstein Center for Epigenomics: studying the role of epigenomic dysregulation in human disease.

    PubMed

    McLellan, Andrew S; Dubin, Robert A; Jing, Qiang; Maqbool, Shahina B; Olea, Raul; Westby, Gael; Broin, Pilib Ó; Fazzari, Melissa J; Zheng, Deyou; Suzuki, Masako; Greally, John M

    2009-10-01

    There is increasing interest in the role of epigenetic and transcriptional dysregulation in the pathogenesis of a range of human diseases, not just in the best-studied example of cancer. It is, however, quite difficult for an individual investigator to perform these studies, as they involve genome-wide molecular assays combined with sophisticated computational analytical approaches of very large datasets that may be generated from various resources and technologies. In 2008, the Albert Einstein College of Medicine in New York, USA established a Center for Epigenomics to facilitate the research programs of its investigators, providing shared resources for genome-wide assays and for data analysis. As a result, several avenues of research are now expanding, with cancer epigenomics being complemented by studies of the epigenomics of infectious disease and a neuroepigenomics program.

  4. Characterizing complexity in socio-technical systems: a case study of a SAMU Medical Regulation Center.

    PubMed

    Righi, Angela Weber; Wachs, Priscila; Saurin, Tarcísio Abreu

    2012-01-01

    Complexity theory has been adopted by a number of studies as a benchmark to investigate the performance of socio-technical systems, especially those that are characterized by relevant cognitive work. However, there is little guidance on how to assess, systematically, the extent to which a system is complex. The main objective of this study is to carry out a systematic analysis of a SAMU (Mobile Emergency Medical Service) Medical Regulation Center in Brazil, based on the core characteristics of complex systems presented by previous studies. The assessment was based on direct observations and nine interviews: three of them with regulator of emergencies medical doctor, three with radio operators and three with telephone attendants. The results indicated that, to a great extent, the core characteristics of complexity are magnified) due to basic shortcomings in the design of the work system. Thus, some recommendations are put forward with a view to reducing unnecessary complexity that hinders the performance of the socio-technical system.

  5. R&D Requirements, RF Gun Mode Studies, FEL-2 Steady-StateStudies, Preliminary FEL-1 Time-Dependent Studies, and Preliminary LayoutOption Investigation

    SciTech Connect

    Byrd, John; Corlett, John; Doolittle, Larry; Fawley, William; Lidia, Steven; Penn, Gregory; Ratti, Alex; Staples, John; Wilcox Russell; Wurtele, Jonathan; Zholents, Alexander

    2005-10-01

    This report constitutes the third deliverable of LBNLs contracted role in the FERMI {at} Elettra Technical Optimization study. It describes proposed R&D activities for the baseline design of the Technical Optimization Study, initial studies of the RF gun mode-coupling and potential effects on beam dynamics, steady-state studies of FEL-2 performance to 10 nm, preliminary studies of time-dependent FEL-1 performance using electron bunch distribution from the start-to-end studies, and a preliminary investigation of a configuration with FEL sinclined at a small angle from the line of the linac.

  6. Electron Spin Resonance and optical absorption spectroscopic studies of manganese centers in aluminium lead borate glasses.

    PubMed

    SivaRamaiah, G; LakshmanaRao, J

    2012-12-01

    Electron Spin Resonance (ESR) and optical absorption studies of 5Al(2)O(3)+75H(3)BO(3)+(20-x)PbO+xMnSO(4) (where x=0.5, 1,1.5 and 2 mol% of MnSO(4)) glasses at room temperature have been studied. The ESR spectrum of all the glasses exhibits resonance signals with effective isotropic g values at ≈2.0, 3.3 and 4.3. The ESR resonance signal at isotropic g≈2.0 has been attributed to Mn(2+) centers in an octahedral symmetry. The ESR resonance signals at isotropic g≈3.3 and 4.3 have been attributed to the rhombic symmetry of the Mn(2+) ions. The zero-field splitting parameter (zfs) has been calculated from the intensities of the allowed hyperfine lines. The optical absorption spectrum exhibits an intense band in the visible region and it has been attributed to (5)E(g)→(5)T(2g) transition of Mn(3+)centers in an octahedral environment. The optical band gap and the Urbach energies have been calculated from the ultraviolet absorption edges.

  7. Sex expression and floral diversity in Jatropha curcas: a population study in its center of origin

    PubMed Central

    Adriano-Anaya, María de Lourdes; Pérez-Castillo, Edilma; Salvador-Figueroa, Miguel; Ruiz-González, Sonia; Vázquez-Ovando, Alfredo; Grajales-Conesa, Julieta

    2016-01-01

    Sex expression and floral morphology studies are central to understand breeding behavior and to define the productive potential of plant genotypes. In particular, the new bioenergy crop Jatropha curcas L. has been classified as a monoecious species. Nonetheless, there is no information about its reproductive diversity in the Mesoamerican region, which is considered its center of origin and diversification. Thus, we determined sex expression and floral morphology in J. curcas populations from southern Mexico and Guatemala. Our results showed that most of J. curcas specimens had typical inflorescences with separate sexes (monoecious); meanwhile, the rest were atypical (gynoecious, androecious, andromonoecious, androgynomonoecious). The most important variables to group these populations, based on a discriminant analysis, were: male flower diameter, female petal length and male nectary length. From southern Mexico “Guerrero” was the most diverse population, and “Centro” had the highest variability among the populations from Chiapas. A cluster analysis showed that the accessions from southern Mexico were grouped without showing any correlation with the geographical origin, while those accessions with atypical sexuality were grouped together. To answer the question of how informative are floral morphological traits compared to molecular markers, we perform a Mantel correlation test between the distance matrix generated in this study and the genetic distance matrix (AFLP) previously reported for the same accessions. We found significant correlation between data at the level of accessions. Our results contribute to design genetic improvement programs by using sexually and morphologically contrasting plants from the center of origin. PMID:27257548

  8. Doing the month in a Taiwanese postpartum nursing center: an ethnographic study.

    PubMed

    Yeh, Yueh-Chen; St John, Winsome; Venturato, Lorraine

    2014-09-01

    Traditionally Chinese and Taiwanese postpartum women conducted postpartum ritual practices, called "doing the month," at home. Today, many Taiwanese women undertake this ritual in postpartum nursing centers. However, little is known about how the traditional practices are being transformed in relation to contemporary health care in Taiwan. In this ethnographic study observations were carried out in a large post-partum center attached to a major hospital in Taipei for nine months, and 27 postpartum women were interviewed. Data were analyzed using ethnographic approaches to extract codes and categories. Doing the month was reshaped by being relocated from the home to a healthcare setting. Midwives took on roles traditionally taken by family members, which had an impact on family roles and relationships. Some postpartum practices were maintained, based on traditional explanations. However, many were modified or challenged, based on explanations from contemporary scientific knowledge. Midwives need to be aware that there could be differences between their culture of care and the cultural values of the women they care for. This study informs culturally appropriate postpartum care and support for women with traditional and contemporary cultural beliefs and attitudes to doing the month in a range of healthcare contexts.

  9. A multi-center milestone study of clinical vertebral CT segmentation.

    PubMed

    Yao, Jianhua; Burns, Joseph E; Forsberg, Daniel; Seitel, Alexander; Rasoulian, Abtin; Abolmaesumi, Purang; Hammernik, Kerstin; Urschler, Martin; Ibragimov, Bulat; Korez, Robert; Vrtovec, Tomaž; Castro-Mateos, Isaac; Pozo, Jose M; Frangi, Alejandro F; Summers, Ronald M; Li, Shuo

    2016-04-01

    A multiple center milestone study of clinical vertebra segmentation is presented in this paper. Vertebra segmentation is a fundamental step for spinal image analysis and intervention. The first half of the study was conducted in the spine segmentation challenge in 2014 International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI) Workshop on Computational Spine Imaging (CSI 2014). The objective was to evaluate the performance of several state-of-the-art vertebra segmentation algorithms on computed tomography (CT) scans using ten training and five testing dataset, all healthy cases; the second half of the study was conducted after the challenge, where additional 5 abnormal cases are used for testing to evaluate the performance under abnormal cases. Dice coefficients and absolute surface distances were used as evaluation metrics. Segmentation of each vertebra as a single geometric unit, as well as separate segmentation of vertebra substructures, was evaluated. Five teams participated in the comparative study. The top performers in the study achieved Dice coefficient of 0.93 in the upper thoracic, 0.95 in the lower thoracic and 0.96 in the lumbar spine for healthy cases, and 0.88 in the upper thoracic, 0.89 in the lower thoracic and 0.92 in the lumbar spine for osteoporotic and fractured cases. The strengths and weaknesses of each method as well as future suggestion for improvement are discussed. This is the first multi-center comparative study for vertebra segmentation methods, which will provide an up-to-date performance milestone for the fast growing spinal image analysis and intervention.

  10. Centers and Institutes at The Pennsylvania State University. A Case Study.

    ERIC Educational Resources Information Center

    Norman, Mary M.

    This paper discusses 43 autonomous and semiautonomous centers on The Pennsylvania State University's main campus. It deals with (1) the history and origin of the Penn State centers, and notes that the centers established between 1887 and 1955 generally represented areas in agriculture, engineering and technology, life sciences and the physical and…

  11. R&D Characteristics and Organizational Structure: Case Studies of University-Industry Research Centers

    ERIC Educational Resources Information Center

    Hart, Maureen McArthur

    2013-01-01

    Within the past few decades, university-industry research centers have been developed in large numbers and emphasized as a valuable policy tool for innovation. Yet little is known about the heterogeneity of organizational structure within these centers, which has implications regarding policy for and management of these centers. This dissertation…

  12. Building a Student-Centered Culture in Times of Natural Disaster: A Case Study

    ERIC Educational Resources Information Center

    Hlinka, Karen Ramey

    2013-01-01

    Increased rates of student success and persistence have been positively linked to community colleges with student-centered cultures. A student-centered culture is one in which policies and practices promote a consistent message of concern and respect while expecting high standards of academic accomplishment. Developing a student-centered culture…

  13. Our Energy Options.

    ERIC Educational Resources Information Center

    Meyers, Paul A.; Witt, Frank C.

    Presented is an analysis of alternatives available to the United States in dealing with energy problems. Options explained and evaluated include coal, solar, hydroelectric, nuclear, geothermal, wind, biomass, and energy conservation. The booklet is part of Project APEC (America's Possible Energy Choices), a nationally validated Title IVc project…

  14. Idaho's Energy Options

    SciTech Connect

    Robert M. Neilson

    2006-03-01

    This report, developed by the Idaho National Laboratory, is provided as an introduction to and an update of the status of technologies for the generation and use of energy. Its purpose is to provide information useful for identifying and evaluating Idaho’s energy options, and for developing and implementing Idaho’s energy direction and policies.

  15. Treatment Options in Psoriasis

    PubMed Central

    Dantow, James E.

    1992-01-01

    Psoriasis is a common skin disease with a variety of clinical presentations. Fortunately, many treatment options are available to the patient and to the physician. Topical, systemic, and physical therapies can be tailored to the patient's needs. Patient compliance and a knowledgeable, caring physician are vital to successful control of the disease. Continuing research offers hope for the chronically disabled. PMID:21221381

  16. Alternative Education Options.

    ERIC Educational Resources Information Center

    Little (Arthur D.), Inc., Washington, DC.

    This guide deals with various areas of alternative education programs, including current practices and different options available to school and community personnel. Steps are outlined to assess present educational settings, design new programs, select the participants, and implement and evaluate the new program. The first appendix contains…

  17. CFB repowering options

    SciTech Connect

    Gittinger, J.

    1996-12-31

    Circulating fluidized bed CFB repowering options are summarized. The following topics are discussed: why repower with CFB technology; advantages of repowering; two forms of of repowering; B and N`s internal recirculation CFB; space-saving design features; cost-saving design features; Ukrainian repowering project; and candidates for repowering.

  18. Option Y, Statistics.

    ERIC Educational Resources Information Center

    Singer, Arlene

    This guide outlines a one semester Option Y course, which has seven learner objectives. The course is designed to provide students with an introduction to the concerns and methods of statistics, and to equip them to deal with the many statistical matters of importance to society. Topics covered include graphs and charts, collection and…

  19. Exploring Career Options.

    ERIC Educational Resources Information Center

    Hellerman, Susan B., Ed.

    1994-01-01

    This newsletter theme issue offers advice to academically talented youth on exploring career options. It begins with an article titled "How To Think about Your Career When You Haven't Even Decided Where To Go to College." The article notes the hazards of early career choice and recognizes the career indecision often brought on by…

  20. Teletext: Assessing the Options.

    ERIC Educational Resources Information Center

    Carey, John; Nisenholtz, Martin

    1980-01-01

    This discussion of broadcast teletext explores some of the options available to public broadcasters and potential obstacles to implementing a teletext service. Topics covered include transmission alternatives, factors affecting service, design specifications, marketing possibilities, financial support, editorial control of information, standards…

  1. Sustainability of composting as an alternative waste management option for developing countries: a case study of the City of Tshwane.

    PubMed

    Snyman, Jacques; Vorster, Kobus

    2011-11-01

    Excessive MSW production is a growing management problem for cities in developing countries, such as South Africa. This study addresses these challenges with particular focus on the City of Tshwane. A major problem in Tshwane is that all the MSW generated in the city, including garden waste, is currently being landfilled. A waste stream analysis of Tshwane reveals the largest fraction of MSW is organic and biodegradable, and therefore suitable for compost production. The study proposes that Tshwane will have to address composting the biodegradable fraction of the MSW stream. This study attempts to understand the economics of composting practices in Tshwane, whether composting in Tshwane is financially viable. A comparative study, applying the dome aeration technology on a conventional static windrow, was conducted with the objective of investigating and proposing alternative improved composting technologies for green waste. Although the study focused on Tshwane, it can be argued that the findings could be implemented in any other South African municipality, and even implemented in other emerging countries.

  2. Studies on the local structures of the substitutional and interstitial Ni 3+ centers in rutile

    NASA Astrophysics Data System (ADS)

    Wu, Shao-Yi; Gao, Xiu-Ying; Lin, Ji-Zi; Fu, Qiang; Lu, Guang-Duo

    2006-09-01

    The local structures of the two rhombic Ni 3+ centers (on the substitutional and interstitial sites) in rutile (TiO 2) are theoretically studied from the perturbation formulas of the g factors for a 3d 7 ion of low spin (S = 1/2) in rhombically distorted octahedra. In these formulas, the contributions to the g factors from the low symmetrical parts of the crystal-fields as well as the spin-orbit coupling interaction and orbitals of the ligands are taken into account. From the investigations, the ligand octahedron in the substitutional Ni 3+ center may suffer a slightly larger axial elongation (characterized by the axial distortion angle Δ αs ≈ - 1.09°) than that (ΔαsH≈-0.73°) in the host and the much smaller perpendicular distortion (characterized by the rhombic distortion angle Δ θs ≈ - 0.75°) than that (ΔθsH≈-9.0°) in the host due to the Jahn-Teller effect. For the interstitial Ni 3+ center, the ligand octahedron is found to undergo a smaller compression (characterized by the axial distortion angle Δ αi ≈ 1.48°) than that (ΔαiH≈8.17°) in the host and a slighter rhombic distortion (Δ θi ≈ 0.1°) than that (ΔθiH≈7.0°) in the host due to the Jahn-Teller effect. The calculated g factors based on the above structural parameters show better agreement than those based on the host structural parameters and those in absence of the spin-orbit coupling and the orbitals of the ligands with the experimentally observed values.

  3. Audit of a Scientific Data Center for Certification as a Trustworthy Digital Repository: A Case Study

    NASA Astrophysics Data System (ADS)

    Downs, R. R.; Chen, R. S.

    2011-12-01

    Services that preserve and enable future access to scientific data are necessary to ensure that the data that are being collected today will be available for use by future generations of scientists. Many data centers, archives, and other digital repositories are working to improve their ability to serve as long-term stewards of scientific data. Trust in sustainable data management and preservation capabilities of digital repositories can influence decisions to use these services to deposit or obtain scientific data. Building on the Open Archival Information System (OAIS) Reference Model developed by the Consultative Committee for Space Data Systems (CCSDS) and adopted by the International Organization for Standardization as ISO 14721:2003, new standards are being developed to improve long-term data management processes and documentation. The Draft Information Standard ISO/DIS 16363, "Space data and information transfer systems - Audit and certification of trustworthy digital repositories" offers the potential to evaluate digital repositories objectively in terms of their trustworthiness as long-term stewards of digital resources. In conjunction with this, the CCSDS and ISO are developing another draft standard for the auditing and certification process, ISO/DIS 16919, "Space data and information transfer systems - Requirements for bodies providing audit and certification of candidate trustworthy digital repositories". Six test audits were conducted of scientific data centers and archives in Europe and the United States to test the use of these draft standards and identify potential improvements for the standards and for the participating digital repositories. We present a case study of the test audit conducted on the NASA Socioeconomic Data and Applications Center (SEDAC) and describe the preparation, the audit process, recommendations received, and next steps to obtain certification as a trustworthy digital repository, after approval of the ISO/DIS standards.

  4. Spectroscopic studies of energy transfer in photosynthetic reaction centers of higher plants

    SciTech Connect

    Tabbutt, S.

    1987-09-01

    The focus of this thesis is excitation transfer and primary photochemistry in spinach chloroplasts and sub-chloroplast particles. The fluorescence kinetics are measured with a synchronously pumped, mode-locked dye laser excitation source and a reverse single photon-counting timing detection system. Very little has been reported on the fluorescence properties of photosystem I (PS I) due to its relatively weak emission compared to photosystem II (PS II). Using a PS I complex isolated from spinach, two emission bands, 690 nm and 722 nm were observed. The 690 nm fluorescence kinetics has an instrument limited (25 ps) rise and is best fit to three exponential decay components: slow, 2.2 to 2.5 ns; middle, 250 to 300 ps; and fast, 40 to 100 ps. Both the yield and kinetics are temperature independent (77 to 295K). The 722 nm emission is dramatically temperature dependent. At 295K the fluorescence lifetimes at 720 nm are identical to those at 690 nm. Upon lowering the temperature the lifetimes of all three decay components increase, a measurable risetime (>25 ps) grows in at temperatures below 265K, and the fluorescence intensity at 722 nm increases about 20-fold from 295K to 77K. These studies provide excitation transfer rates and activation energies within the PS I centers. The PS I emission data can be explained by two Chl a species: an antenna pool emitting at 690 nm and the reaction center emitting at 722 nm. The PSI reaction center complex (CP1) fluorescence intensity under continuous actinic illumination (690 nm) decreased by about 20% with the same kinetics as the optical bleaching at 699 nm. The kinetics and magnitudes of the fluorescence decrease and photobleaching depend upon excitation intensity, ascorbate concentration, ferri/ferrocyanide redox titration and phenasinemethosulfate concentration. 168 refs., 38 figs., 4 tabs.

  5. Highly Reusable Space Transportation (HRST) Baseline Concepts and Analysis: Rocket/RBCC Options. Part 2; A Comparative Study

    NASA Technical Reports Server (NTRS)

    Woodcock, Gordon

    1997-01-01

    This study is an extension of a previous effort by the Principal Investigator to develop baseline data to support comparative analysis of Highly Reusable Space Transportation (HRST) concepts. The analyses presented herin develop baseline data bases for two two-stage-to-orbit (TSTO) concepts: (1) Assisted horizontal take-off all rocket (assisted HTOHL); and (2) Assisted vertical take-off rocket based combined cycle (RBCC). The study objectives were to: (1) Provide configuration definitions and illustrations for assisted HTOHL and assisted RBCC; (2) Develop a rationalization approach and compare these concepts with the HRST reference; and (3) Analyze TSTO configurations which try to maintain SSTO benefits while reducing inert weight sensitivity.

  6. Treatment options for hyperemesis gravidarum.

    PubMed

    Abramowitz, Amy; Miller, Emily S; Wisner, Katherine L

    2017-01-09

    Hyperemesis gravidarum (HG) is a severe and prolonged form of nausea and/or vomiting during pregnancy. HG affects 0.3-2% of pregnancies and is defined by dehydration, ketonuria, and more than 5% body weight loss. Initial pharmacologic treatment for HG includes a combination of doxylamine and pyridoxine. Additional interventions include ondansetron or dopamine antagonists such as metoclopramide or promethazine. The options are limited for women who are not adequately treated with these medications. We suggest that mirtazapine is a useful drug in this context and its efficacy has been described in case studies. Mirtazapine acts on noradrenergic, serotonergic, histaminergic, and muscarinic receptors to produce antidepressant, anxiolytic, antiemetic, sedative, and appetite-stimulating effects. Mirtazapine is not associated with an independent increased risk of birth defects. Further investigation of mirtazapine as a treatment for HG holds promise to expand treatment options for women suffering from HG.

  7. Space station needs, attributes and architectural options study. Volume 7-1: Data book. Science and applications missions

    NASA Technical Reports Server (NTRS)

    1983-01-01

    User requirements for space station use are presented for the following areas: space environments, astrophysics, Earth observations, and life science. Also included are a summary of study tasks and final reports, a topical cross reference, key team members, and acronyms and abbreviations.

  8. Treatment options for visceral leishmaniasis: a systematic review of clinical studies done in India, 1980-2004.

    PubMed

    Olliaro, Piero L; Guerin, Philippe J; Gerstl, Sibylle; Haaskjold, Astrid Aga; Rottingen, John-Arne; Sundar, Shyam

    2005-12-01

    The state of Bihar in India carries the largest share of the world's burden of antimony-resistant visceral leishmaniasis. We analysed clinical studies done in Bihar with different treatments between 1980 and 2004. Overall, 53 studies were included (all but one published), of which 15 were comparative (randomised, quasi-randomised, or non-randomised), 23 dose-finding, and 15 non-comparative. Data from comparative studies were pooled when appropriate for meta-analysis. Overall, these studies enrolled 7263 patients in 123 treatment arms. Adequacy of methods used to do the studies and report on them varied. Unresponsiveness to antimony has developed steadily in the past to such an extent that antimony must now be replaced, despite attempts to stop its progression by increasing dose and duration of therapy. The classic second-line treatments are unsuited: pentamidine is toxic and its efficacy has also declined, and amphotericin B deoxycholate is effective but requires hospitalisation for long periods and toxicity is common. Liposomal amphotericin B is very effective and safe but currently unaffordable because of its high price. Miltefosine-the first oral drug for visceral leishmaniasis-is now registered and marketed in India and is effective, but should be used under supervision to prevent misuse. Paromomycin (or aminosidine) is effective and safe, and although not yet available, a regulatory submission is due soon. To preserve the limited armamentarium of drugs to treat visceral leishmaniasis, drugs should not be deployed unprotected; combinations can make drugs last longer, improve treatment, and reduce costs to households and health systems. India, Bangladesh, and Nepal agreed recently to undertake measures towards the elimination of visceral leishmaniasis. The lessons learnt in Bihar could help inform policy decisions both regionally and elsewhere.

  9. A randomized phase III study of carfilzomib vs low-dose corticosteroids with optional cyclophosphamide in relapsed and refractory multiple myeloma (FOCUS).

    PubMed

    Hájek, R; Masszi, T; Petrucci, M T; Palumbo, A; Rosiñol, L; Nagler, A; Yong, K L; Oriol, A; Minarik, J; Pour, L; Dimopoulos, M A; Maisnar, V; Rossi, D; Kasparu, H; Van Droogenbroeck, J; Yehuda, D B; Hardan, I; Jenner, M; Calbecka, M; Dávid, M; de la Rubia, J; Drach, J; Gasztonyi, Z; Górnik, S; Leleu, X; Munder, M; Offidani, M; Zojer, N; Rajangam, K; Chang, Y-L; San-Miguel, J F; Ludwig, H

    2017-01-01

    This randomized, phase III, open-label, multicenter study compared carfilzomib monotherapy against low-dose corticosteroids and optional cyclophosphamide in relapsed and refractory multiple myeloma (RRMM). Relapsed and refractory multiple myeloma patients were randomized (1:1) to receive carfilzomib (10-min intravenous infusion; 20 mg/m(2) on days 1 and 2 of cycle 1; 27 mg/m(2) thereafter) or a control regimen of low-dose corticosteroids (84 mg of dexamethasone or equivalent corticosteroid) with optional cyclophosphamide (1400 mg) for 28-day cycles. The primary endpoint was overall survival (OS). Three-hundred and fifteen patients were randomized to carfilzomib (n=157) or control (n=158). Both groups had a median of five prior regimens. In the control group, 95% of patients received cyclophosphamide. Median OS was 10.2 (95% confidence interval (CI) 8.4-14.4) vs 10.0 months (95% CI 7.7-12.0) with carfilzomib vs control (hazard ratio=0.975; 95% CI 0.760-1.249; P=0.4172). Progression-free survival was similar between groups; overall response rate was higher with carfilzomib (19.1 vs 11.4%). The most common grade ⩾3 adverse events were anemia (25.5 vs 30.7%), thrombocytopenia (24.2 vs 22.2%) and neutropenia (7.6 vs 12.4%) with carfilzomib vs control. Median OS for single-agent carfilzomib was similar to that for an active doublet control regimen in heavily pretreated RRMM patients.

  10. A randomized phase III study of carfilzomib vs low-dose corticosteroids with optional cyclophosphamide in relapsed and refractory multiple myeloma (FOCUS)

    PubMed Central

    Hájek, R; Masszi, T; Petrucci, M T; Palumbo, A; Rosiñol, L; Nagler, A; Yong, K L; Oriol, A; Minarik, J; Pour, L; Dimopoulos, M A; Maisnar, V; Rossi, D; Kasparu, H; Van Droogenbroeck, J; Yehuda, D B; Hardan, I; Jenner, M; Calbecka, M; Dávid, M; de la Rubia, J; Drach, J; Gasztonyi, Z; Górnik, S; Leleu, X; Munder, M; Offidani, M; Zojer, N; Rajangam, K; Chang, Y-L; San-Miguel, J F; Ludwig, H

    2017-01-01

    This randomized, phase III, open-label, multicenter study compared carfilzomib monotherapy against low-dose corticosteroids and optional cyclophosphamide in relapsed and refractory multiple myeloma (RRMM). Relapsed and refractory multiple myeloma patients were randomized (1:1) to receive carfilzomib (10-min intravenous infusion; 20 mg/m2 on days 1 and 2 of cycle 1; 27 mg/m2 thereafter) or a control regimen of low-dose corticosteroids (84 mg of dexamethasone or equivalent corticosteroid) with optional cyclophosphamide (1400 mg) for 28-day cycles. The primary endpoint was overall survival (OS). Three-hundred and fifteen patients were randomized to carfilzomib (n=157) or control (n=158). Both groups had a median of five prior regimens. In the control group, 95% of patients received cyclophosphamide. Median OS was 10.2 (95% confidence interval (CI) 8.4–14.4) vs 10.0 months (95% CI 7.7–12.0) with carfilzomib vs control (hazard ratio=0.975; 95% CI 0.760–1.249; P=0.4172). Progression-free survival was similar between groups; overall response rate was higher with carfilzomib (19.1 vs 11.4%). The most common grade ⩾3 adverse events were anemia (25.5 vs 30.7%), thrombocytopenia (24.2 vs 22.2%) and neutropenia (7.6 vs 12.4%) with carfilzomib vs control. Median OS for single-agent carfilzomib was similar to that for an active doublet control regimen in heavily pretreated RRMM patients. PMID:27416912

  11. Pawnee Nation Energy Option Analyses

    SciTech Connect

    Matlock, M.; Kersey, K.; Riding In, C.

    2009-07-21

    market developments in the bio-energy industry, establish contacts with research institutions with which the tribe could potentially partner in grant-funded research initiatives. In addition, a substantial effort by the Kaw and Cherokee tribes is underway to pursue wind development at the Chilocco School Site in northern Oklahoma where Pawnee is a joint landowner. Pawnee Nation representatives should become actively involved in these development discussions and should explore the potential for joint investment in wind development at the Chilocco site. Financial incentives for project development are generally structured to provide tribes with access to conventional financing mechanisms. Grant funding for project construction is currently difficult to obtain. Substantial new opportunities for bio-fuel development may exist in the next few years with passage of the 2007 Farm Bill, and through opportunities made available through Oklahoma’s new Bio-energy Center. A review of potential alternatives to Pawnee Nation’s current electricity supply scenario revealed that a range of options could be viable. These include the following scenarios: business as usual, alternative supply, negotiate lower rates with City of Pawnee, focus on reducing energy usage, develop electric utility organization. Under any circumstances, Pawnee Nation should purse strategies to reduce energy usage, as this is the simplest means of reducing electric costs and environmental impacts. The research team also recommends that Pawnee Nation initiate some focused discussions with the City of Pawnee, with GRDA, and with IEC to discuss its wholesale supply purchase options. These discussions will better inform the Pawnee Energy Team of the specific pros and cons of its wholesale power supply options, and will assist the Team’s broader decision-making on utility-related issues. The ultimate path chosen by Pawnee Nation will depend on further consideration of priorities and potential barriers by Pawnee

  12. A pilot study of BRCA mutation carriers' knowledge about the clinical impact of prophylactic-oophorectomy and views on fertility consultation: a single-center pilot study.

    PubMed

    Kim, J; Skrzynia, C; Mersereau, J E

    2015-02-01

    BRCA mutation carriers will experience early surgically induced menopause following prophylactic bilateral salpingo-oophorectomy (PBSO). This pilot study aimed to investigate their (1) knowledge about the clinical impact of PBSO; (2) views on fertility consultation (FC)/fertility preservation (FP) treatment; and (3) difficulties in conceiving compared to non-carriers. A cross-sectional, single institution web-survey was performed at a university-based IVF center. Women aged 18-50 years who were screened for BRCA gene mutations from 2005 to 2013 were recruited via mail. Forty-one BRCA-positive and 110 BRCA-negative women completed the survey (response rate: 50 %). The knowledge about the reproductive impact of PBSO was limited, with the majority of women in this highly educated sample only identifying the correct response 64 % of the time. Among BRCA mutation carriers, 24 (59 %) had positive views about FC/FP treatments. A larger proportion of women with no children at the time of BRCA testing, and those who were non-white tended to have positive views toward FP. Women with, versus without, BRCA mutations were more likely to have difficulty in conceiving (p = 0.08). This well-educated group had limited knowledge about the reproductive clinical impact of PBSO, or the benefit of a FP before PBSO. Most women with BRCA mutations were interested in FC/FP treatment if they had not completed childbearing at the time of screening. Targeted referrals for FC at the time of BRCA screening may help women improve knowledge and allow improved decision-making about reproductive options.

  13. Sediment Management Options for Galveston Island, Texas

    DTIC Science & Technology

    2015-06-15

    the potential for long-term sustainability are presented. Galveston Island is a 47 km long sand barrier island along the upper Texas coast (Figure...1 SEDIMENT MANAGEMENT OPTIONS FOR GALVESTON ISLAND , TEXAS ASHLEY E. FREY1, ANDREW MORANG1, DAVID B. KING1, ROBERT C. THOMAS2 1. U.S. Army...Galveston Island is a major tourist and commercial center on the Gulf of Mexico at the mouth of Galveston Bay, Texas, USA. The shoreline along the

  14. Comparability of ophthalmic diagnoses by clinical and Reading Center examiners in the Visual Acuity Impairment Survey Pilot Study.

    PubMed

    Sperduto, R D; Hiller, R; Podgor, M J; Palmberg, P; Ferris, F L; Wentworth, D

    1986-12-01

    Technologic advances in ophthalmic equipment offer the possibility of replacing direct clinical examinations with Reading Center evaluations of data recorded in epidemiologic studies. Clinical and Reading Center examiners made independent ophthalmic diagnoses of 133 right and 132 left eyes of 138 adults in the Visual Acuity Impairment Survey Pilot Study, carried out in three US cities, Boston, Detroit, and Minneapolis, in August 1981-December 1982. The Reading Center diagnosed eye conditions using only photographic and visual field data collected at the time of the clinical examination. In the comparisons of clinical and Reading Center evaluations reported here, only eyes judged by the examiners to have pathology severe enough to reduce visual acuity to 6/9 or worse were classified as having pathology. (No visual acuity criterion was required for the diagnosis of glaucoma or diabetic retinopathy.) There was agreement in diagnostic assessments between clinical and Reading Center examiners in about 80% of eyes. The kappa statistic, which adjusts for chance agreement, was in the fair to good range: 0.60 for 133 right eyes and 0.62 for 132 left eyes. When the Reading Center examiners were provided with additional information on medical history, refractive error and best corrected visual acuity, the agreement between clinical and Reading Center assessments among the subset of eyes with 6/9 or worse vision again was in the fair to good range, with kappas of 0.61 for 45 right eyes and 0.68 for 48 left eyes. Inter-observer agreement between Reading Center examiners in diagnosing pathology was in the good to excellent range. Use of Reading Centers in future epidemiologic studies should be considered, but elimination of the clinical examinations is not recommended until modifications in the protocol described here have been made and shown to improve levels of agreement between clinical and Reading Center examiners.

  15. Center for Volcanic and Tectonic Studies: 1992--1993 annual report

    SciTech Connect

    1994-12-31

    The annual report of the Center for Volcanic Studies (CVTS) contains a series of papers, reprints and a Master of Science thesis that review the progress made by the CVTS between October 1, 1992 and February 1, 1994. During this period CVTS staff focused on several topics that have direct relevance to volcanic hazards related to the proposed high-level nuclear waste repository at Yucca Mountain, Nevada. These topics include: (1) polygenetic/polycyclic volcanism in Crater Flat, Nevada; (2) the role of the mantle during crustal extension; (3) the detailed geology of Crater Flat, Nevada; (4) Pliocene volcanoes in the Reveille Range, south-central Nevada; (5) estimating the probability of disruption of the proposed repository by volcanic eruptions. This topic is being studied by Dr. C.H. Ho at UNLV. The report contains copies of these individual papers as they were presented in various conference proceedings.

  16. A valence bond study of three-center four-electron pi bonding: electronegativity vs electroneutrality.

    PubMed

    DeBlase, Andrew; Licata, Megan; Galbraith, John Morrison

    2008-12-18

    Three-center four-electron (3c4e) pi bonding systems analogous to that of the ozone molecule have been studied using modern valence bond theory. Molecules studied herein consist of combinations of first row atoms C, N, and O with the addition of H atoms where appropriate in order to preserve the 3c4e pi system. Breathing orbital valence bond (BOVB) calculations were preformed at the B3LYP/6-31G**-optimized geometries in order to determine structural weights, pi charge distributions, resonance energies, and pi bond energies. It is found that the most weighted VB structure depends on atomic electronegativity and charge distribution, with electronegativity as the dominant factor. By nature, these systems are delocalized, and therefore, resonance energy is the main contributor to pi bond energies. Molecules with a single dominant VB structure have low resonance energies and therefore low pi bond energies.

  17. Final report. Conceptual studies nuclear energy center Lake Hartwell, S. C. , Phase III

    SciTech Connect

    Not Available

    1981-01-01

    This document summarizes a conceptual study on the feasibility and practicality of developing a nuclear energy center (NEC) at a specific site in the SSEB region. The site selected for this conceptual study is at Lake Hartwell, South Carolina. The conceptual NEC at Lake Hartwell consists of twelve nuclear electric generating units, arranged on the site in four clusters of three units each, known as triads. The nominal distance between triads was selected as 2-1/2 miles. Each unit was assumed to be a 1250 MW(e). The total electric output of 15,000 MWe would be transmitted to five major utilities in South Carolina, North Carolina, and Georgia. The basic finding was that the concept of a NEC on the Lake Hartwell site is feasible, but further analysis of institutional issues and possible legislation would be required.

  18. NASA's EOSDIS: options for data providers

    NASA Astrophysics Data System (ADS)

    Khalsa, Siri J.; Ujhazy, John E.

    1995-12-01

    EOSDIS, the data and information system being developed by NASA to support interdisciplinary earth science research into the 21st century, will do more than manage and distribute data from EOS-era satellites. It will also promote the exchange of data, tools, and research results across disciplinary, agency, and national boundaries. This paper describes the options that data providers will have for interacting with the EOSDIS Core System (ECS), the infrastructure of EOSDIS. The options include: using the ECS advertising service to announce the availability of data at the provider's site; submitting a candidate data set to one of the Distributed Active Archive Centers (DAACs); establishing a data server that will make the data accessible via ECS and establishing Local Information Manager (LIM) which would make the data available for multi-site searches. One additional option is through custom gateway interfaces which would provide access to existing data archives. The gateway, data server, and LIM options require the implementation of ECS code at the provider site to insure proper protocols. The advertisement and ingest options require no part of ECS design to reside at the provider site.

  19. Study on load forecasting to data centers of high power density based on power usage effectiveness

    NASA Astrophysics Data System (ADS)

    Zhou, C. C.; Zhang, F.; Yuan, Z.; Zhou, L. M.; Wang, F. M.; Li, W.; Yang, J. H.

    2016-08-01

    There is usually considerable energy consumption in data centers. Load forecasting to data centers is in favor of formulating regional load density indexes and of great benefit to getting regional spatial load forecasting more accurately. The building structure and the other influential factors, i.e. equipment, geographic and climatic conditions, are considered for the data centers, and a method to forecast the load of the data centers based on power usage effectiveness is proposed. The cooling capacity of a data center and the index of the power usage effectiveness are used to forecast the power load of the data center in the method. The cooling capacity is obtained by calculating the heat load of the data center. The index is estimated using the group decision-making method of mixed language information. An example is given to prove the applicability and accuracy of this method.

  20. Employee health benefit redesign at the academic health center: a case study.

    PubMed

    Marshall, Julie; Weaver, Deirdre C; Splaine, Kevin; Hefner, David S; Kirch, Darrell G; Paz, Harold L

    2013-03-01

    The rapidly escalating cost of health care, including the cost of providing health care benefits, is a significant concern for many employers. In this article, the authors examine a case study of an academic health center that undertook a complete redesign of its health benefit structure to control rising costs, encourage use of its own provider network, and support employee wellness. With the implementation in 2006 of a high-deductible health plan combined with health reimbursement arrangements and wellness incentives, the Penn State Hershey Medical Center (PSHMC) was able to realize significant cost savings and increase use of its own network while maintaining a high level of employee satisfaction. By contracting with a single third-party administrator for its self-insured plan, PSHMC reduced its administrative costs and simplified benefit choices for employees. In addition, indexing employee costs to salary ensured that this change was equitable for all employees, and the shift to a consumer-driven health plan led to greater employee awareness of health care costs. The new health benefit plan's strong focus on employee wellness and preventive health has led to significant increases in the use of preventive health services, including health risk assessments, cancer screenings, and flu shots. PSHMC's experience demonstrates the importance of clear and ongoing communication with employees throughout--before, during, and even after--the process of health benefit redesign.

  1. Case study of the integration of a local health department and a community health center.

    PubMed

    Lambrew, J M; Ricketts, T C; Morrissey, J P

    1993-01-01

    As rural communities struggle to sustain health services locally, innovative alternatives to traditional programs are being developed. A significant adaptation is the rural health network or alliance that links local health departments and community health centers. The authors describe how a rural local health department and community health center, the core organizations in publicly sponsored primary care, came to share a building and administrative and service activities. Both the details of this alliance and its development are examined. The case history reveals that circumstance and State involvement were the catalysts for service integration, more so than the need for or the benefits of the arrangement. The closure of a county-owned hospital created a situation in which State officials were able to broker a cooperative agreement between the two agencies. This case study suggests two hypotheses: that need for integrated services alone may not be sufficient to catalyze the development of primary care alliances and that strong policy support may override any local and internal resistance to integration.

  2. The proton therapy nozzles at Samsung Medical Center: A Monte Carlo simulation study using TOPAS

    NASA Astrophysics Data System (ADS)

    Chung, Kwangzoo; Kim, Jinsung; Kim, Dae-Hyun; Ahn, Sunghwan; Han, Youngyih

    2015-07-01

    To expedite the commissioning process of the proton therapy system at Samsung Medical Center (SMC), we have developed a Monte Carlo simulation model of the proton therapy nozzles by using TOol for PArticle Simulation (TOPAS). At SMC proton therapy center, we have two gantry rooms with different types of nozzles: a multi-purpose nozzle and a dedicated scanning nozzle. Each nozzle has been modeled in detail following the geometry information provided by the manufacturer, Sumitomo Heavy Industries, Ltd. For this purpose, the novel features of TOPAS, such as the time feature or the ridge filter class, have been used, and the appropriate physics models for proton nozzle simulation have been defined. Dosimetric properties, like percent depth dose curve, spreadout Bragg peak (SOBP), and beam spot size, have been simulated and verified against measured beam data. Beyond the Monte Carlo nozzle modeling, we have developed an interface between TOPAS and the treatment planning system (TPS), RayStation. An exported radiotherapy (RT) plan from the TPS is interpreted by using an interface and is then translated into the TOPAS input text. The developed Monte Carlo nozzle model can be used to estimate the non-beam performance, such as the neutron background, of the nozzles. Furthermore, the nozzle model can be used to study the mechanical optimization of the design of the nozzle.

  3. Health Information Security: A Case Study of Three Selected Medical Centers in Iran

    PubMed Central

    Hajrahimi, Nafiseh; Dehaghani, Sayed Mehdi Hejazi; Sheikhtaheri, Abbas

    2013-01-01

    Health Information System (HIS) is considered a unique factor in improving the quality of health care activities and cost reduction, but today with the development of information technology and use of internet and computer networks, patients’ electronic records and health information systems have become a source for hackers. Methods This study aims at checking health information security of three selected medical centers in Iran using AHP fuzzy and TOPSIS compound model. To achieve that security measures were identified, based on the research literature and decision making matrix using experts’ points of view. Results and discussion Among the 27 indicators, seven indicators were selected as effective indicators and Fuzzy AHP technique was used to determine the importance of security indicators. Based on the comparisons made between the three selected medical centers to assess the security of health information, it is concluded that Chamran hospital has the most acceptable level of security and attention in three indicators of “verification and system design, user access management, access control system”, Al Zahra Hospital in two indicators of “access management and network access control” and Amin Hospital in “equipment safety and system design”. In terms of information security, Chamran Hospital ranked first, Al-Zahra Hospital ranked second and Al- Zahra hospital has the third place. PMID:23572861

  4. Studies of electrically and recombination active centers in undoped GaN grown by OMVPE

    SciTech Connect

    Polyakov, A.Y.; Shin, M.; Skowronski, M.; Greve, D.W.; Govorkov, A.V.; Smirnov, N.B.

    1997-12-31

    Deep centers were studied in GaN samples grown by organometallic vapor phase epitaxy (OMVPE). Electron traps 0.2 eV and 0.5 eV below conduction band edge and 0.25 eV and 0.5-0.85 eV above the valence band edge were detected by means of deep levels transient spectroscopy (DLTS), photoelectron relaxation spectroscopy (PERS) and thermally simulated current spectroscopy (TSC). The photoconductivity at low temperature is shown to be persistent and the magnitude of photosensitivity is dependent on the way the samples are grown. Microcathodoluminescence (MCL) and electron beam induced current (EBIC) measurements indicate that the density of deep recombination centers near the dislocation walls between the misoriented GaN domains is lower than inside the domains. Spatially resolved PERS measurements show that the concentration of the 0.85 eV level is higher in the low angle grain boundary regions that produce bright contrast in EBIC and MCL.

  5. Identifying Elements of Patient-Centered Care in Underserved Populations: A Qualitative Study of Patient Perspectives

    PubMed Central

    Raja, Sheela; Hasnain, Memoona; Vadakumchery, Tracy; Hamad, Judy; Shah, Raveena; Hoersch, Michelle

    2015-01-01

    Patient-centered care is an important goal in the delivery of healthcare. However, many patients do not engage in preventive medical care. In this pilot study, we conducted twenty in depth, semi-structured qualitative interviews at the University of Illinois at Chicago Health Sciences campus in a four month time frame. Many patients were underserved and underinsured, and we wanted to understand their experiences in the healthcare system. Using content analysis, several themes emerged from the interview data. Participants discussed the need for empathy and rapport with their providers. They identified provider behaviors that fostered a positive clinical relationship, including step-by step explanations of procedures, attention to body language and clinic atmosphere, and appropriate time management. Participants identified cost as the most common barrier to engaging in preventive care and discussed children and social support as motivating factors. A long-term relationship with a provider was an important motivator for preventive care, suggesting that the therapeutic alliance was essential to many patients. Conversely, many participants discussed a sense of dehumanization in the healthcare system, reporting that their life circumstances were overlooked, or that they were judged based on insurance status or ethnicity. We discuss implications for provider training and healthcare delivery, including the importance of patient-centered medical homes. PMID:25993110

  6. Mammalian fertility preservation through cryobiology: value of classical comparative studies and the need for new preservation options

    PubMed Central

    Comizzoli, Pierre; Wildt, David E.

    2014-01-01

    Human-related fertility preservation strategies have enormous potential for helping sustain and protect other species, especially to assist managing or ‘rescuing’ the genomes of genetically valuable individuals, including endangered species. However, wider-scale applications are limited by significant physiological variations among species, as well as a lack of fundamental knowledge of basic reproductive traits and cryosensitivity. Systematic and comparative cryopreservation studies (e.g. on membrane biophysical properties and resilience to freezing temperatures) are required to successfully recover gametes and gonadal tissues after thawing and eventually produce healthy offspring. Such data are currently available for humans and a few laboratory and livestock animals, with virtually all other species, including wildlife, having gone unstudied. Interestingly, there also are commonalities among taxa that allow a protocol developed for one species to provide useful information or guidance for another. However, when a rare animal unexpectedly dies there is no time for a prospective understanding of that species’ biophysical traits. Because the odds of success will be much lower in such instances, it is essential that more fundamental studies be directed at more species. But also worthwhile is thinking beyond these systematic characterisations to consider the potential of a ‘universal preservation protocol’ for animal biomaterials. PMID:24305181

  7. Recombinant tissue plasminogen activator as a novel treatment option for infective endocarditis: a retrospective clinical study in 32 children.

    PubMed

    Levitas, Aviva; Krymko, Hanna; Richardson, Justin; Zalzstein, Eli; Ioffe, Viktoriya

    2016-01-01

    Infective endocarditis is a life-threatening infectious syndrome, with high morbidity and mortality. Current treatments for infective endocarditis include intravenous antibiotics, surgery, and involve a lengthy hospital stay. We hypothesised that adjunctive recombinant tissue plasminogen activator treatment for infective endocarditis may facilitate faster resolution of vegetations and clearance of positive blood cultures, and therefore decrease morbidity and mortality. This retrospective study included follow-up of patients, from 1997 through 2014, including clinical presentation, causative organism, length of treatment, morbidity, and mortality. We identified 32 patients, all of whom were diagnosed with endocarditis and were treated by recombinant tissue plasminogen activator. Among all, 27 patients (93%) had positive blood cultures, with the most frequent organisms being Staphylococcus epidermis (nine patients), Staphylococcus aureus (six patients), and Candida (nine patients). Upon treatment, in 31 patients (97%), resolution of vegetations and clearance of blood cultures occurred within hours to few days. Out of 32 patients, one patient (3%) died and three patients (9%) suffered embolic or haemorrhagic events, possibly related to the recombinant tissue plasminogen activator. None of the patients required surgical intervention to assist vegetation resolution. In conclusion, it appears that recombinant tissue plasminogen activator may become an adjunctive treatment for infective endocarditis and may decrease morbidity as compared with current guidelines. Prospective multi-centre studies are required to validate our findings.

  8. Tuberous sclerosis complex-associated renal angiomyolipomas: A single center study of 17 consecutive cases.

    PubMed

    Wang, Hang; Long, Qilai; Wang, Yiwei; Liu, Li; Zhou, Lin; Guo, Jianming

    2016-08-01

    The aim of the present study was to investigate the treatment options for patients with tuberous sclerosis complex (TSC)-associated renal angiomyolipomas (AMLs). A total of 17 patients who were consecutively diagnosed with TSC-associated renal AMLs at the Department of Urology of Zhongshan Hospital between 1998 and 2012 were included in the study. The patient cohort included 7 males and 10 females with a mean age of 37.6 years (range, 18-62 years). A total of 12 patients were diagnosed with renal AML with TSC during physical examination (PE), while 5 patients were admitted to the Emergency Department of Zhongshan Hospital due to spontaneous rupture of renal AMLs. All renal lesions were examined by ultrasonography and abdominal computed tomography prior to treatment. The primary outcome measure was the kidney reservation rate (patients that had not received nephrectomies) in the rupture group and PE group. Both abdominal ultrasonography and CT revealed AMLs in all patients and the mean tumor size was 10.0±4.0 cm (range, 3.0-17.5 cm). Overall, 9 patients underwent surgery, which included unilateral nephrectomy in 4 patients and unilateral partial nephrectomy/tumor enucleation in 5 patients. The remaining 8 patients received medical treatment. All patients were followed-up for between 10 and 67 months. One patient succumbed as a result of multiple organ failure, which was caused by hypovolemic shock due to the spontaneous rupture of renal AML. The kidney reservation rate during surgery was 87.5% (7/8) in the PE group and 25% (1/4) in the spontaneous rupture group. The management of TSC-associated renal AMLs differs from that of solitary sporadic AMLs. Surgical therapy is recommended following careful risk-benefit analysis.

  9. Assessment of cancer care in Indian elderly cancer patients: A single center study

    PubMed Central

    Sarkar, Anindya; Shahi, UP

    2013-01-01

    Background and purpose: This prospective study aimed to assess the profiles of elderly cancer patient to optimize cancer care in Indian setup. The profiles have been compared with that of younger patients in terms of epidemiological, clinical data, co-morbidity, treatment, toxicity, clinical outcome, and survival pattern. Materials and Methods: The study comprised cancer patients attending radiotherapy outdoor (November 2005 to June 2006). There were 104 patients of age ≥60 years (elderly group) and 121 patients of 45-59 years (younger group). Results: Elderly group had median age 65 years (60-88 years) with M:F = 1:1. The younger group had median age 50 years (45-59 years) with M:F = 1:2. Elderly had higher proportion of gastrointestinal and genito-urinary tract malignancies. Younger group had higher proportion of breast, lymphoma, and brain tumor. 13% had co-morbidity, 50% received treatment, 27% were treated with radiotherapy with or without surgery, and two-third of these cases belong to elderly group. Majority tolerated treatment well. 10% had significant grade of toxicity. 57% of elderly patients did not accept and one-fourth of all cases did not complete the prescribed treatment. 88% cases were responders of which 70% showed complete response. There were no differences between two groups. At 12 months 35% of treated patients came for follow-up. At first 12 months, 60-70% were alive without disease. Conclusion: There were differences between two groups in terms of performance status, treatment acceptance, and treatment modality prescribed. Elderly patients deserve same opportunity as younger patients for treatment and survival options from the oncologist. PMID:24455630

  10. Scoping studies of the alternative options for defueling, packaging, shipping, and disposing of the TMI-2 spent fuel core

    SciTech Connect

    Anderson, Robert T.

    1980-09-01

    A portion of this fuel will be shipped to nuclear facilities to perform detailed physical examinations. Removal of this fuel from the TMI-2 core is also a significant step in the eventual cleanup of this facility. The report presents a scoping study of the technical operations required for defueling and canning. The TMI fuel when canned could be stored in the spent fuel storage pool. After a period of on-site storage, it is expected that the bulk of the fuel will be shipped off-site for either storage or reprocessing. Evaluation is made of the technical, economic, and institutional factors associated with alternate approaches to disposition of this fuel. Recommendations are presented concerning future generic development tasks needed for the defueling, packaging, on-site shipping of this fuel.

  11. Life cycle assessment of base-load heat sources for district heating system options

    SciTech Connect

    Ghafghazi, Saeed; Sowlati, T.; Sokhansanj, Shahabaddine; Melin, Staffan

    2011-03-01

    Purpose There has been an increased interest in utilizing renewable energy sources in district heating systems. District heating systems are centralized systems that provide heat for residential and commercial buildings in a community. While various renewable and conventional energy sources can be used in such systems, many stakeholders are interested in choosing the feasible option with the least environmental impacts. This paper evaluates and compares environmental burdens of alternative energy source options for the base load of a district heating center in Vancouver, British Columbia (BC) using the life cycle assessment method. The considered energy sources include natural gas, wood pellet, sewer heat, and ground heat. Methods The life cycle stages considered in the LCA model cover all stages from fuel production, fuel transmission/transportation, construction, operation, and finally demolition of the district heating system. The impact categories were analyzed based on the IMPACT 2002+ method. Results and discussion On a life-cycle basis, the global warming effect of renewable energy options were at least 200 kgeqCO2 less than that of the natural gas option per MWh of heat produced by the base load system. It was concluded that less than 25% of the upstream global warming impact associated with the wood pellet energy source option was due to transportation activities and about 50% of that was resulted from wood pellet production processes. In comparison with other energy options, the wood pellets option has higher impacts on respiratory of inorganics, terrestrial ecotoxicity, acidification, and nutrification categories. Among renewable options, the global warming impact of heat pump options in the studied case in Vancouver, BC, were lower than the wood pellet option due to BC's low carbon electricity generation profile. Ozone layer depletion and mineral extraction were the highest for the heat pump options due to extensive construction required for these

  12. Community outreach and engagement strategies from the Wisconsin Study Center of the National Children's Study.

    PubMed

    Riesch, Susan K; Ngui, Emmanuel M; Ehlert, Carey; Miller, M Katie; Cronk, Christine A; Leuthner, Steven; Strehlow, Mary; Hewitt, Jeanne B; Durkin, Maureen S

    2013-05-01

    The purpose of this methods article was to describe and evaluate outreach and engagement strategies designed to initially build county-wide awareness and support for the National Children's Study (NCS or the study) and subsequently to target the segment communities where recruitment for the study occurred. Selected principles from community outreach, social marketing, and health care system and personal referral formed the foundation for the strategies. The strategies included a celebration event, community advisory board, community needs assessment, building relationships with health care providers and systems, eliciting a network of study supporters, newsletters, appearances at local young family-oriented events (health fairs, parades), presentations to local community leaders, community forums, "branding" with assistance from a women-owned local marketing firm, and mailings including an oversized, second-touch postcard. Six months after study launch, approximately 4,600 study-eligible women were asked in a door-to-door survey if and how they became aware of the study. On average, 40% of eligible women reported being aware of the study. The most frequently cited strategy to cultivate their awareness was study-specific mailings. Awareness of the NCS increased by 7.5% among those receiving a second-touch postcard relative to controls (95% CIs [4.9, 10.7] z = 5.347, p < 0.0000, d = 0.16). Community outreach and engagement strategies, in particular the oversized postcard as a second-touch effort, may be used effectively by researchers for participant recruitment and by public health nurses for delivery of important population-focused messages.

  13. Erectile Dysfunction in Chronic Prostatitis/Chronic Pelvic Pain Syndrome: Outcomes from a Multi-Center Study and Risk Factor Analysis in a Single Center

    PubMed Central

    Chen, Xin; Wang, Zhu; Chen, Shengfu; Yang, Qiyun; Wan, Zi; Han, Dayu; Xiao, Haipeng; Sun, Xiangzhou; Deng, Chunhua

    2016-01-01

    The aim of this study was to investigate the prevalence of erectile dysfunction (ED) in patients with chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) and explore the influence of UPOINT domains, National Institutes of Health-CP symptom index (NIH-CPSI) and other factors on ED prevalence. This was a prospective study of consecutive patients with CP/CPPS seen at 11 tertiary hospitals during January–July 2014. ED was diagnosed as a score of<21 on the International Index of Erectile Function (IIEF-5). Patients from one center were evaluated by the UPOINT system and NIH-CPSI. Each patient was assessed using clinical examination, asocio-demographic questionnaire, the Patient Health Questionnaire (PHQ), the Pain Catastrophizing Scale (PCS), NIH-CPSI and IIEF-5.1406 patients from 11 centers (mean age, 32.18 years; range 18–60 years) were enrolled. ED was found in 638/1406 patients (45.4%), and was categorized as mild in 291(45.6%), moderate in 297(46.6%) and severe in50(7.7%). 192 patients from one center(mean age,31.3 years; range 18–57 years) were further studied.IIEF-5 score correlated negatively with NIH-CPSI(r = 0.251), PHQ (r = 0.355) and PCS (r = 0.322)scores (P<0.001).PHQ score correlated positively with NIH-CPSI (r = 0.586) and PCS(r = 0.662) scores (P<0.001).NIH-CPSI, PHQ, PCS and IIEF-5 scores did not differ significantly between class IIIA and IIIB CP/CPPS. Multivariate logistic regression showed that UPOINT psychological (P) domain and NIH-CPSI symptom severity were independent risk factors for ED in CP/CPPS. It is concluded that psychological factors and symptom severity are independent risk factors for ED in CP/CPPS. PMID:27120096

  14. Erectile Dysfunction in Chronic Prostatitis/Chronic Pelvic Pain Syndrome: Outcomes from a Multi-Center Study and Risk Factor Analysis in a Single Center.

    PubMed

    Zhang, Yadong; Zheng, Tao; Tu, Xiang'an; Chen, Xin; Wang, Zhu; Chen, Shengfu; Yang, Qiyun; Wan, Zi; Han, Dayu; Xiao, Haipeng; Sun, Xiangzhou; Deng, Chunhua

    2016-01-01

    The aim of this study was to investigate the prevalence of erectile dysfunction (ED) in patients with chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) and explore the influence of UPOINT domains, National Institutes of Health-CP symptom index (NIH-CPSI) and other factors on ED prevalence. This was a prospective study of consecutive patients with CP/CPPS seen at 11 tertiary hospitals during January-July 2014. ED was diagnosed as a score of<21 on the International Index of Erectile Function (IIEF-5). Patients from one center were evaluated by the UPOINT system and NIH-CPSI. Each patient was assessed using clinical examination, asocio-demographic questionnaire, the Patient Health Questionnaire (PHQ), the Pain Catastrophizing Scale (PCS), NIH-CPSI and IIEF-5.1406 patients from 11 centers (mean age, 32.18 years; range 18-60 years) were enrolled. ED was found in 638/1406 patients (45.4%), and was categorized as mild in 291(45.6%), moderate in 297(46.6%) and severe in50(7.7%). 192 patients from one center(mean age,31.3 years; range 18-57 years) were further studied.IIEF-5 score correlated negatively with NIH-CPSI(r = 0.251), PHQ (r = 0.355) and PCS (r = 0.322)scores (P<0.001).PHQ score correlated positively with NIH-CPSI (r = 0.586) and PCS(r = 0.662) scores (P<0.001).NIH-CPSI, PHQ, PCS and IIEF-5 scores did not differ significantly between class IIIA and IIIB CP/CPPS. Multivariate logistic regression showed that UPOINT psychological (P) domain and NIH-CPSI symptom severity were independent risk factors for ED in CP/CPPS. It is concluded that psychological factors and symptom severity are independent risk factors for ED in CP/CPPS.

  15. Restless Leg Syndrome in Different Types of Demyelinating Neuropathies: A Single-Center Pilot Study

    PubMed Central

    Luigetti, Marco; Del Grande, Alessandra; Testani, Elisa; Bisogni, Giulia; Losurdo, Anna; Giannantoni, Nadia Mariagrazia; Mazza, Salvatore; Sabatelli, Mario; Della Marca, Giacomo

    2013-01-01

    Objective: to determine the prevalence of restless legs syndrome (RLS) in a cohort of patients with demyelinating neuropathies. Methods: Patients were retrospectively recruited from our cohort of different forms of demyelinating neuropathies, including chronic inflammatory demyelinating neuropathy (CIDP), Charcot-Marie-Tooth 1A (CMT1A), and hereditary neuropathy with liability to pressure palsies (HNPP) referred to our Department of Neurology in a 10-year period. The validated 4-item RLS questionnaire was used for diagnosis of RLS. All patients with RLS who fulfilled criteria underwent a suggested immobilization test to confirm the diagnosis. A group of outpatients referred to the sleep disorders unit and data from published literature were used as controls. Results: Prevalence of RLS in demyelinating neuropathy group was higher than prevalence observed in control population (p = 0.0142) or in the literature data (p = 0.0007). In particular, in comparison with both control population and literature data, prevalence of RLS was higher in CIDP group (p = 0.0266 and p = 0.0063, respectively) and in CMT1A group (p = 0.0312 and p = 0.0105, respectively), but not in HNPP (p = 1.000 and p = 0.9320, respectively). Conclusions: our study confirms a high prevalence of RLS in inflammatory neuropathies as CIDP and, among inherited neuropathies, in CMT1A but not in HNPP. Considering that this is only a small cohort from a single-center retrospective experience, the link between RLS and neuropathy remains uncertain, and larger multicenter studies are probably needed to clarify the real meaning of the association between RLS and neuropathy. Citation: Luigetti M; Del Grande A; Testani E; Bisogni G; Losurdo A; Giannantoni NM; Mazza S; Sabatelli M; Della Marca G. Restless leg syndrome in different types of demyelinating neuropathies: a single-center pilot study. J Clin Sleep Med 2013;9(9):945-949. PMID:23997707

  16. Analysis of potential water-supply management options, 2010-60, and documentation of revisions to the model of the Irwin Basin Aquifer System, Fort Irwin National Training Center, California

    USGS Publications Warehouse

    Voronin, Lois M.; Densmore, Jill N.; Martin, Peter

    2014-01-01

    The Fort Irwin National Training Center is considering several alternatives to manage their limited water-supply sources in the Irwin Basin. An existing three-dimensional, finite-difference groundwater-flow model—the U.S. Geological Survey’s MODFLOW—of the aquifer system in the basin was updated and the initial input dataset was supplemented with groundwater withdrawal data for the period 2000–10. The updated model was then used to simulate four combinations, or scenarios, of groundwater withdrawal and recharge over the next 50 years (January 2011 through December 2060). The scenarios included combinations of continuing withdrawals from currently active production wells, supplementing any increases in demand with withdrawals from an inactive production well, reducing withdrawal amounts and rates, and reducing the discharge of treated wastewater to infiltration ponds that provide a recharge source to the underlying aquifer. Results of the simulations indicated that, depending on the scenario implemented, groundwater levels would rise (over the next 50 years) from 40 feet to as much as 65 feet in the northwestern part of the Irwin Basin, and from 5 feet to 10 feet in the southeastern part.

  17. Burns in mobile home fires--descriptive study at a regional burn center.

    PubMed

    Mullins, Robert F; Alarm, Badrul; Huq Mian, Mohammad Anwarul; Samples, Jancie M; Friedman, Bruce C; Shaver, Joseph R; Brandigi, Claus; Hassan, Zaheed

    2009-01-01

    Death from fires and burns are the sixth most common cause of unintentional injury death in the United States. More than (3/4) of burn deaths occurring in the United States are in the home. Mobile home fires carry twice the death rate as other dwellings. The aim of the study was to describe the characteristics of deaths and injuries in mobile home fire admitted in a regional Burn Center and to identify possible risk factors. A cross-sectional retrospective study was carried out among all burn patients admitted to a regional Burn Center between January 2002 and December 2004 (3469 patients). The study included patients who suffered a burn injury from a mobile home fire. The demographic characteristics of the patients, location of mobile home, associated inhalation injury, source of fire, comorbidity of the victims, employment status, insurance status, family history of burns, and outcomes of the treatment were incorporated in a data collection record. There were 65 burn patients in mobile home fires admitted to the Burn Center during the studied period. The average age of the patients was 39 years (ranging from 2 to 81 years, SD=16.06), 77% were male, 67% were white, and 79% were the residents in the suburban areas of Georgia, South Carolina, North Carolina, and Florida. The average TBSA of burns was about 21% (ranging from 1 to 63%, SD=17.66), 63% of the patients had associated inhalation, three inhalation injury only, and 69% patients required ventilator support. The average length of stay per TBSA percentage of burn was 1.01 days (P=0.00), controlling for age, preexisting medical comorbidities, and inhalation injury. About 88% of the patients had preexisting medical comorbid conditions, 74% were smokers, 64% reported as alcoholic, and 72% had at least some form of health insurance coverage. In 40% of the cases, the cause of the fire was unknown, 31% were caused by accidental explosions, such as electric, gasoline, or kerosene appliances, and 29% were due to other

  18. The self-employment option for people with disabilities: a case study of 'AHVA' desk top publishing company.

    PubMed

    Reiter, S; Friedman, L; Goldman, T

    1995-09-01

    From the above results of the evaluation survey it can be concluded that the participants of the 'AHVA' desktop publishing company, who are with multiple and physical disabilities and who have initiated and run their own enterprise, perceived their first year of operation as beneficial. They mastered new technical skills, learned new work-related behaviours, expanded their interpersonal competencies and felt personal growth. They all developed high motivation to make their operation successful. The case study of 'AHVA' desktop publishing company, initiated and run by a group of multiply and physically disable persons, is unique and demonstrates the positive trend for the future. It is an example of personal and group commitment to build a competitive enterprise. It is self determination rather than the actual outcome of services provided, that is the driving force behind their efforts. The team members demonstrated that persons with disabilities can indeed take charge of their lives, be masters of their own destinies, and lead a productive and meaningful life. Here, inclusion is not a one-sided process in which service providers and rehabilitation experts try to integrate persons with disabilities into the community and regular employment. Inclusion is to integrate persons with disabilities into the community and regular employment. Inclusion is achieved here by the self initiative of a group of persons with disabilities. They have created an extraordinary enterprise according to their own special needs. Non-disabled people interact with them on an equal level, as partners in a business, sharing mutual interests of quality production.(ABSTRACT TRUNCATED AT 250 WORDS)

  19. Evaluating technology service options.

    PubMed

    Blumberg, D F

    1997-05-01

    Four service and support options are available to healthcare organizations for maintaining their growth arsenals of medical and information technology. These options include maintaining and servicing all equipment using a facility-based biomedical engineering and MIS service department; using a combination of facility-based service and subcontracted service; expanding facility-based biomedical and MIS service departments to provide service to other healthcare organizations to achieve economies of scale; and outsourcing all maintenance, repair, and technical support services. Independent service companies and original equipment manufacturers (OEMs) are offering healthcare organizations a wider array of service and support capabilities than ever before. However, some health systems have successfully developed their own independent service organizations to take care of their own--and other healthcare organizations'--service and support needs.

  20. Is the Dark Triad Better Studied Using a Variable- or a Person-Centered Approach? An Exploratory Investigation

    PubMed Central

    Kam, Chester Chun Seng; Zhou, Mingming

    2016-01-01

    Despite Allport’s early call to study personality as a coordinated system of traits within individual rather than separate traits, researchers often assume personality variables are largely distinct, independent characteristics. In the current research, we examined the usual assumption that Dark Triad traits (narcissism, psychopathy, and Machiavellianism) are best studied using a variable-centered (dimensional), rather than a person-centered (taxonic), approach. Results showed that a variable-centered approach is appropriate in understanding the Dark Triad, and yet individuals scoring high on one Dark Triad dimension also tend to score high on other dimensions. Based on these results, we concluded that it is appropriate to study individual differences in the Dark Triad (inferences based on persons) by capturing the common variance among the three traits using a variable-centered approach, rather than treating these traits as independent or uncoordinated characteristics. PMID:27580224

  1. The Fusion Energy Option

    NASA Astrophysics Data System (ADS)

    Dean, Stephen O.

    2004-06-01

    Presentations from a Fusion Power Associates symposium, The Fusion Energy Option, are summarized. The topics include perspectives on fossil fuel reserves, fusion as a source for hydrogen production, status and plans for the development of inertial fusion, planning for the construction of the International Thermonuclear Experimental Reactor, status and promise of alternate approaches to fusion and the need for R&D now on fusion technologies.

  2. A cephalometric study to determine the center of anteroposterior curve of occlusion in the cranium.

    PubMed

    Kumar, Thota Kiran; Thomas, Vivek; Nilawar, Sanjay; Balamurugan, R; Marwaha, Baldeep Singh; Vinod, V

    2013-09-01

    Proper management of the occlusal plane is an essential consideration when multiple long span posterior restorations are designed. When restorations are added to an existing tooth arrangement characterized by rotated, tipped or extruded teeth, excursive interferences may be incorporated. The curve of Spee which exists in natural dentition, allows harmony to exist between the anterior teeth and the condylar guidance. Broadrick fag or occlusal plane analyzer is used to assist in the reproduction of tooth morphology that is commensurate with the curve of Spee when posterior restorations are designed; its use prevents the introduction of protrusive interferences. The current study determines the relationship of the center of anteroposterior curve of occlusion in the cranium and its relationship to other cephalometric landmarks and also evaluates the relationship of anteroposterior curve of occlusion to the condyle.

  3. Pilot Study: Measuring the Effects of Center of Gravity Shift on Postural Stability

    NASA Technical Reports Server (NTRS)

    Times-Marshall, Chelsea; Reschke, Millard

    2009-01-01

    It has been shown that astronauts returning from space often experience postural instability due to the stimulus rearrangement of the visual, vestibular, and proprioceptive systems. However, postural control may also be influenced by the head-ward shift in their center of gravity (CG) that occurs as a result of the expansion of their spinal column by as much as two inches during long duration space flight, as well as the CG shift that occurs from the Life Support Pack on the extra-vehicular activity (EVA) suit. This study investigated the effect on postural stability after (1) an immediate shift in the CG towards the head, (2) a 30 minute adaptation to the shifted CG, and (3) immediate shift of the CG back to normal, accomplished by donning and removing a modified backpack. We hypothesized that at each immediate shift in CG, postural performance will be compromised.

  4. Cross-site study of the implementation of information technology innovations in health sciences centers.

    PubMed Central

    Ash, J.

    1995-01-01

    An interpretive oral history technique was used to identify factors most important in the implementation stage of information technology innovation diffusion. Electronic mail, end user literature searching, and aspects of the computer-based patient record were the innovations selected for study at academic health sciences centers. Transcripts of thirty-four interviews with key individuals were analyzed to determine six categories of factors. Word counts were then used to determine underlying emphases. Analysis of variance tested whether there were significant differences in uses of words by categories of individuals, by those at different institutions, and when different innovations were described. Results indicate that the innovations themselves correlate significantly with different word categories, where category of individual and institution do not. Words related to the computer based patient record characterize further critical factors in implementing that particular innovation. PMID:8563400

  5. Case study of hydrogen water chemistry implementation at the Duane Arnold Energy Center

    SciTech Connect

    Leibel, T.A.; Turley, D.S. ); Steen, A. )

    1989-01-01

    This paper presents a case study of the hydrogen water chemistry (HWC) program implemented at Duane Arnold Energy Center (DAEC). In 1985 various reactor recirculation system piping weld repairs and safe end replacements were performed at the DAEC. These weld repairs and safe-end replacements were required as a result of inter-granular stress corrosion cracking (IGSCC). In 1986, the utility decided to implement a hydrogen water chemistry program as a means of suppressing IGSCC. The paper includes a discussion of the system design basis, a brief system description, and a discussion of plant system interactions. A description of methodology developed to verify and monitor the effectiveness of the HWC system is also included.

  6. The Center for Astrochemical Studies at the Max Planck Institute for Extraterrestrial Physics.

    NASA Astrophysics Data System (ADS)

    Lattanzi, Valerio; Bizzocchi, Luca; Laas, Jacob; Giuliano, Barbara Michela; Spezzano, Silvia; Endres, Christian; Caselli, Paola

    2016-06-01

    The Center for Astrochemical Studies (CAS), at the Max Planck Institute for Extraterrestrial Physics (MPE) in Garching, has been founded to incorporate scientists with different background to elucidate the physical-chemical processes that lead to the formation of stars and planets. The CAS group includes experts in observations (including millimetre and sub-millimetre interferometry, radio and infrared telescopes), theory (physical processes and dynamics, gas-grain chemical processes and dust evolution, molecular astrophysics and collisional/rate coefficients), and laboratory. The latter is mainly focused on spectroscopic characterisation of molecular species relevant in space, including ions, radicals and astronomically complex organic molecules. In this talk the laboratory group of the CAS will be briefly presented, including current projects and planned experiments.

  7. Gear noise, vibration, and diagnostic studies at NASA Lewis Research Center

    NASA Technical Reports Server (NTRS)

    Zakrajsek, James J.; Oswald, Fred B.; Townsend, Dennis P.; Coy, John J.

    1990-01-01

    The NASA Lewis Research Center and the U.S. Army Aviation Systems Command are involved in a joint research program to advance the technology of rotorcraft transmissions. This program consists of analytical as well as experimental efforts to achieve the overall goals of reducing weight, noise, and vibration, while increasing life and reliability. Recent analytical activities are highlighted in the areas of gear noise, vibration, and diagnostics performed in-house and through NASA and U.S. Army sponsored grants and contracts. These activities include studies of gear tooth profiles to reduce transmission error and vibration as well as gear housing and rotordynamic modeling to reduce structural vibration transmission and noise radiation, and basic research into current gear failure diagnostic methodologies. Results of these activities are presented along with an overview of near term research plans in the gear noise, vibration, and diagnostics area.

  8. Flow quality studies of the NASA Lewis Research Center Icing Research Tunnel diffuser

    NASA Technical Reports Server (NTRS)

    Arrington, E. Allen; Pickett, Mark T.; Sheldon, David W.

    1994-01-01

    The purpose was to document the airflow characteristics in the diffuser of the NASA Lewis Research Center Icing Research Tunnel and to determine the effects of vortex generators on the flow quality in the diffuser. The results were used to determine how to improve the flow in this portion of the tunnel so that it can be more effectively used as an icing test section and such that overall tunnel efficiency can be improved. The demand for tunnel test time and the desire to test models that are too large for the test section were two of the drivers behind this diffuser study. For all vortex generator configurations tested, the flow quality was improved.

  9. Scientific Visualization to Study Flux Transfer Events at the Community Coordinated Modeling Center

    NASA Technical Reports Server (NTRS)

    Rastatter, Lutz; Kuznetsova, Maria M.; Sibeck, David G.; Berrios, David H.

    2011-01-01

    In this paper we present results of modeling of reconnection at the dayside magnetopause with subsequent development of flux transfer event signatures. The tools used include new methods that have been added to the suite of visualization methods that are used at the Community Coordinated Modeling Center (CCMC). Flux transfer events result from localized reconnection that connect magnetosheath magnetic field and plasma with magnetospheric fields and plasma and results in flux rope structures that span the dayside magnetopause. The onset of flux rope formation and the three-dimensional structure of flux ropes are studied as they have been modeled by high-resolution magnetohydrodynamic simulations of the dayside magnetosphere of the Earth. We show that flux transfer events are complex three-dimensional structures that require modern visualization and analysis techniques. Two suites of visualization methods are presented and we demonstrate the usefulness of those methods through the CCMC web site to the general science user.

  10. Studies on the Magnetic Center of the Mu2e Solenoid System

    SciTech Connect

    Lopes, M. L.; Ambrosio, G.; Buehler, M.; Coleman, R.; Evbota, D.; Khalatian, V.; Lamm, M.; Miller, J.; Moretti, G.; Page, T.; Tartaglia, M.

    2014-01-01

    The definition of the magnetic center in the Mu2e solenoid system is not trivial given the S-shaped nature of the transport solenoid. Moreover, due to the fringe field of the larger bore adjacent magnets-production solenoid and the detector solenoid-the magnetic center does not coincide with the geometric center of the system. The reference magnetic center can be obtained by tracking a low-momentum charged particle through the whole system. This paper will discuss this method and will evaluate the deviations from the nominal magnetic center given the tolerances in the manufacturing and the alignment of the coils. Methods for the correction of the magnetic center will also be presented.

  11. Measuring Efficiency of Knowledge Production in Health Research Centers Using Data Envelopment Analysis (DEA): A Case Study in Iran

    PubMed Central

    Amiri, Mohammad Meskarpour; Nasiri, Taha; Saadat, Seyed Hassan; Anabad, Hosein Amini; Ardakan, Payman Mahboobi

    2016-01-01

    Introduction Efficiency analysis is necessary in order to avoid waste of materials, energy, effort, money, and time during scientific research. Therefore, analyzing efficiency of knowledge production in health areas is necessary, especially for developing and in-transition countries. As the first step in this field, the aim of this study was the analysis of selected health research center efficiency using data envelopment analysis (DEA). Methods This retrospective and applied study was conducted in 2015 using input and output data of 16 health research centers affiliated with a health sciences university in Iran during 2010–2014. The technical efficiency of health research centers was evaluated based on three basic data envelopment analysis (DEA) models: input-oriented, output-oriented, and hyperbolic-oriented. The input and output data of each health research center for years 2010–2014 were collected from the Iran Ministry of Health and Medical Education (MOHE) profile and analyzed by R software. Results The mean efficiency score in input-oriented, output-oriented, and hyperbolic-oriented models was 0.781, 0.671, and 0.798, respectively. Based on results of the study, half of the health research centers are operating below full efficiency, and about one-third of them are operating under the average efficiency level. There is also a large gap between health research center efficiency relative to each other. Conclusion It is necessary for health research centers to improve their efficiency in knowledge production through better management of available resources. The higher level of efficiency in a significant number of health research centers is achievable through more efficient management of human resources and capital. Further research is needed to measure and follow the efficiency of knowledge production by health research centers around the world and over a period of time. PMID:28344756

  12. OPTIONS FOR ABATING GREENHOUSE GASES FROM EXHAUST STREAMS.

    SciTech Connect

    FTHENAKIS,V.

    2001-12-01

    This report examines different alternatives for replacing, treating, and recycling greenhouse gases. It is concluded that treatment (abatement) is the only viable short-term option. Three options for abatement that were tested for use in semiconductor facilities are reviewed, and their performance and costs compared. This study shows that effective abatement options are available to the photovoltaic (PV) industry, at reasonable cost.

  13. Minneapolis district-heating options

    NASA Astrophysics Data System (ADS)

    Stovall, T. K.; Borkowski, R. J.; Karnitz, M. A.; Strom, S.; Linwick, K.

    1981-10-01

    The feasibility of a large-scale district heating system for the Minneapolis central city area was investigated. The analysis was based on a previous city of St. Paul Hot-water district heating study and other studies done by a Swedish engineering firm. Capital costs such as building and heat source conversion, pipeline construction, and equipment were used in comparing the projected expenses of various district heating scenarios. Options such as coal, refuse-derived fuel burning, and cogeneration at the Riverside Power Station were discussed as energy supplies for a cost-effective district heating system.

  14. High pressure study of low compressibility tetracalcium aluminum carbonate hydrates 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}CaCO{sub 3}{center_dot}11H{sub 2}O

    SciTech Connect

    Moon, Juhyuk; Oh, Jae Eun; Balonis, Magdalena; Glasser, Fredrik P.; Clark, Simon M.; Monteiro, Paulo J.M.

    2012-01-15

    Synchrotron X-ray diffraction data was collected from a sample of monocarboaluminate 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}CaCO{sub 3}{center_dot}11H{sub 2}O from ambient pressure to 4.3 GPa. The refined crystal structure at ambient pressure is triclinic with parameters a = 5.77(2) A, b = 8.47(5) A, c = 9.93(4) A, {alpha} = 64.6(2) Degree-Sign , {beta} = 82.8(3) Degree-Sign , {gamma} = 81.4(4) Degree-Sign , and space group of P1 or P1{sup Macron }. It showed some degree of perfectly reversible pressure-induced dehydration with a non-hygroscopic pressure-transmitting medium. However the dehydration effect does not critically affect a bulk modulus due to its strong framework. The isothermal bulk modulus of monocarboaluminate was found to be 53(5) GPa and 54(4) GPa with 3rd order and 2nd order Birch-Murnaghan Equation of state, respectively. That value is higher than for any other reported AFm or AFt phase. The pressure-volume behavior of the monocarboaluminate was compared with that of previous studied hemicarboaluminate.

  15. Vitrified waste option study report

    SciTech Connect

    Lopez, D.A.; Kimmitt, R.R.

    1998-02-01

    A {open_quotes}Settlement Agreement{close_quotes} between the Department of Energy and the State of Idaho mandates that all radioactive high-level waste (HLW) now stored at the Idaho Chemical Processing Plant (ICPP) will be treated so that it is ready to be moved out of Idaho for disposal by a target date of 2035. This report investigates vitrification treatment of all ICPP calcine, including the existing and future HLW calcine resulting from calcining liquid Sodium-Bearing Waste (SBW). Currently, the SBW is stored in the tank farm at the ICPP. Vitrification of these wastes is an acceptable treatment method for complying with the Settlement Agreement. This method involves vitrifying the calcined waste and casting the vitrified mass into stainless steel canisters that will be ready to be moved out of the Idaho for disposal by 2035. These canisters will be stored at the Idaho National Engineering and Environmental Laboratory (INEEL) until they are sent to a HLW national repository. The operating period for vitrification treatment will be from 2013 through 2032; all HLW will be treated and in storage by the end of 2032.

  16. The TOPEX satellite option study

    NASA Technical Reports Server (NTRS)

    1982-01-01

    The applicability of an existing spacecraft bus and subsystems to the requirements of ocean circulation measurements are assessed. The operational meteorological satellite family TIROS and DMSP are recommended. These programs utilize a common bus to satisfy their Earth observation missions. Note that although the instrument complements were different, the pointing accuracies were different, and, initially, the boosters were different, a high degree of commonality was achieved.

  17. Cost and Schedule Analytical Techniques Development: Option 2 Year

    NASA Technical Reports Server (NTRS)

    1997-01-01

    This Final Report summarizes the activities performed by Science Applications International Corporation (SAIC) for the Option 2 Year from December 1, 1996 through November 30, 1997. The Final Report is in compliance with Paragraph 5 of Section F of the contract. This CSATD contract provides products and deliverable in the form of models, data bases, methodologies, studies and analyses for the NASA Marshall Space Flight Center's (MSFC) Engineering Cost Office (PPO3) the Program Plans and Requirements Officer (PP02), and other user organizations. Detailed Monthly Progress reports were submitted to MSFC in accordance with the contract's Statement of Work, Section TV "Reporting and Documentation". These reports spelled out each month's specific work accomplishments, deliverables submitted, major meetings held, and other pertinent information. This Final Report will summarize these activities at higher level. During this contract Option Year, SAIC expended 29,830 man-hours in tile performance of tasks called out in the Statement of Work and reported oil in this yearly Final Report. This represents approximately 16 full-time EPs. Included are the basis Huntsville-based team, plus SAIC specialists in San Diego, Ames Research Center, Chicago, and Colorado Springs performing specific tasks for which they are uniquely qualified.

  18. PEDIATRIC DELIRIUM AND ASSOCIATED RISK FACTORS: A SINGLE-CENTER PROSPECTIVE OBSERVATIONAL STUDY

    PubMed Central

    Gerber, Linda M.; Sun, Xuming; Kearney, Julia; Patel, Anita; Greenwald, Bruce

    2016-01-01

    Objective To describe a single-institution pilot study regarding prevalence and risk factors for delirium in critically ill children. Design A prospective observational study, with secondary analysis of data collected during the validation of a pediatric delirium screening tool, the Cornell Assessment of Pediatric Delirium (CAPD). Setting This study took place in the pediatric intensive care unit (PICU) at an urban academic medical center. Patients 99 consecutive patients, ages newborn to 21 years. Intervention Subjects underwent a psychiatric evaluation for delirium based on the DSM-IV criteria. Measurements and Main Results Prevalence of delirium in this sample was 21%. In multivariate analysis, risk factors associated with the diagnosis of delirium were presence of developmental delay, need for mechanical ventilation, and age 2-5 years. Conclusions In our institution, pediatric delirium is a prevalent problem, with identifiable risk factors. Further large-scale prospective studies are required to explore multi-institutional prevalence, modifiable risk factors, therapeutic interventions, and effect on long-term outcomes. PMID:25647240

  19. TABADO: "Evaluation of a smoking cessation program among Adolescents in Vocational Training Centers": Study protocol

    PubMed Central

    2009-01-01

    Background Most of the efforts to reduce teenagers' tobacco addiction have focused on smoking prevention and little on smoking cessation. A smoking cessation program (TABADO study), associating pharmacologic and cognitive-behavioural strategy, on a particularly vulnerable population (vocational trainees), was developed. This study aims to evaluate the efficacy of the program which was offered to all smokers in a population aged 15 to 20 years in Vocational Training Centers (VTC). This paper presents the TABADO study protocol. Methods The study is quasi-experimental, prospective, evaluative and comparative and takes place during the 2 years of vocational training. The final population will be composed of 2000 trainees entering a VTC in Lorraine, France, during the 2008-2009 period. The intervention group (1000 trainees) benefited from the TABADO program while no specific intervention took place in the "control" group (1000 trainees) other than the treatment and education services usually available. Our primary outcome will be the tobacco abstinence rate at 12 months. Discussion If the program proves effective, it will be a new tool in the action against smoking in populations that have been seldom targeted until now. In addition, the approach could be expanded to other young subjects from socially disadvantaged backgrounds in the context of a public health policy against smoking among adolescents. Trial registration Clinical trial identification number is NTC00973570. PMID:19912627

  20. Lunar Cube Transfer Trajectory Options

    NASA Technical Reports Server (NTRS)

    Folta, David C.; Dichman, Don; Clark, Pamela; Haapala, Amanda; Howell, Kathleen

    2014-01-01

    Contingent upon the modification of an initial condition of the injected or deployed orbit. Additionally, these designs can be restricted by the selection of the Cubesat subsystem design such as propulsion or communication. Nonetheless, many trajectory options can be designed with have a wide range of transfer durations, fuel requirements, and final destinations. Our investigation of potential trajectories highlights several design options including deployment into low Earth orbit (LEO), geostationary transfer orbits (GTO), and higher energy direct lunar transfer orbits. In addition to direct transfer options from these initial orbits, we also investigate the use of longer duration Earth-Moon dynamical systems. For missions with an intended lunar orbit, much of the design process is spent optimizing a ballistic capture while other science locations such as Sun-Earth libration or heliocentric orbits may simply require a reduced Delta-V imparted at a convenient location along the trajectory. In this article we examine several design options that meet the above limited deployment and subsystem drivers. We study ways that both impulsive and low-thrust Solar Electric Propulsion (SEP) engines can be used to place the Cubesat first into a highly eccentric Earth orbit, enter the Moon's Sphere of Influence, and finally achieve a highly eccentric lunar orbit. We show that such low-thrust transfers are feasible with a realistic micro-thruster model, assuming that the Cubesat can generate sufficient power for the SEP. Two examples are shown here: (1) A Cubestat injected by Exploration Mission 1 (EM-1) then employing low thrust; and (2) a CubSat deployed in a GTO, then employing impulsive maneuvers. For the EM-1 injected initial design, we increase the EM-1 targeted lunar flyby distance to reduce the energy of the lunar flyby to match that of a typical lMoon system heteroclinic manifold. Figure 1 presents an option that encompasses the similar dynamics as that of the ARTEMIS