Seal Sample Fixtures

The development of the International Space Station is critically dependent upon development and testing of materials that will require exposure to the space environment. The seals between the modules are one of the more important examples. The choice of seals depends upon the seal materials' susceptibility to atomic oxygen, UV radiation, and the combined external space environment. Also, the choice of thermal control materials depends on their susceptibility to the space environment. The Space Environmental Branch at MSFC developed a flight experiment to provide information on the effects of the space environment on seal and thermal control materials. The experiment, called the Passive Optical Sample Array (POSA), involved exposing several different material samples to the atomic oxygen, UV radiation, and combined effects of the space environment. The POSA experiment is currently flying on the Russian Mir space station. It was necessary during the assembly of POSA to develop an understanding of available fabrication and metrology techniques in order to develop several monitoring systems for the experiment. The report briefly describes the tasks and the work performed in preparing the samples for the POSA experiment

Healthcare Price Transparency: Policy Approaches and Estimated Impacts on Spending

Healthcare price transparency discussions typically focus on increasing patients' access to information about their out-of-pocket costs, but that focus is too narrow and should include other audiences -- physicians, employers, health plans and policymakers -- each with distinct needs and uses for healthcare price information. Greater price transparency can reduce U.S. healthcare spending.For example, an estimated $100 billion could be saved over the next 10 years if three select interventions were undertaken. However, most of the projected savings come from making price information available to employers and physicians, according to an analysis by researchers at the former Center for Studying Health System Change (HSC). Based on the current availability and modest impact of plan-based transparency tools, requiring all private plans to provide personalized out-of-pocket price data to enrollees would reduce total health spending by an estimated$18 billion over the next decade. While $18 billion is a substantial dollar amount, it is less than a tenth of a percent of the$40 trillionin total projected health spending over the same period. In contrast, using state all-payer claims databases to gather and report hospital-specific prices might reduce spending by an estimated $61 billion over 10 years.The effects of price transparency depend critically on the intended audience, the decision-making context and how prices are presented. And the impact of price transparency can be greatly amplified if target audiences are able and motivated to act on the information. Simply providing prices is insufficient to control spending without other shifts in healthcare financing, including changes in benefit design to make patients more sensitive to price differences among providers and alternative treatments. Other reforms that can amplify the impact of price transparency include shifting from fee-for-service payments that reward providers for volume to payment methods that put providers at risk for spending for episodes of care or defined patient populations. While price transparency alone seems unlikely to transform the healthcare system, it can play a needed role in enabling effective reforms in value-based benefit design and provider payment

Potato mop-top virus in infected cells

RESP-655

A Contrast and Comparison of Maximum Achievable Control Technology (MACT) and Life Cycle Assessment (LCA) as Strategies to Reduce Hazardous Air Pollutants (HAPs)

Maximum Achievable Control Technology (MACT) and LifeCycle Assessment (LCA) provide alternative methods for controlling Hazardous Air Pollutants (HAPs). This paper evaluates the application of MACT and LCA as general strategies to reduce HAP emissions within the specific context of the primary aluminum industry. MACT is a "end-of-pipe" control based approach. It is derived from the emissions baseline and the control technologies used by the top 12% of the best controlled sources within a given source category. LCA is a pollution prevention approach that focuses on the "cradle to cradle" multimedia environmental inputs, outputs, and impacts of a product or process. This technical paper concludes that MACT is the most effective immediate strategy to control HAPs. LCA is effective as a means of reducing HAPs, however, is limited by its tradeoff of data quality for data quantity, and its lack of environmental models to evaluate environmental impacts. A model for streamlining LCA using MACT data is demonstrated, and an overview is provided for MACT and LCA methods.Master of Science in Public Healt

A longitudinal study of self-assessment accuracy

Although studies have examined medical students' ability to self-assess their performance, there are few longitudinal studies that document the stability of self-assessment accuracy over time. This study compares actual and estimated examination performance for three classes during their first 3 years of medical school. Methods  Students assessed their performance on classroom examinations and objective structured clinical examination (OSCE) stations. Each self-assessment was then contrasted with their actual performance using idiographic (within-subject) methods to define three measures of self-assessment accuracy: bias (arithmetic differences of actual and estimated scores), deviation (absolute differences of actual and estimated scores), and covariation (correlation of actual and estimated scores). These measures were computed for four intervals over the course of 3 years. Multivariate analyses of variance and correlational analyses were used to evaluate the stability of these measures. Results  Self-assessment accuracy measures were relatively stable over the first 2 years of medical school with a decease occurring in the third year. However, the correlational analyses indicated that the stability of self-assessment accuracy was comparable to the stability of actual performance over this same period. Conclusion  The apparent decline in accuracy in the third year may reflect the transition from familiar classroom-based examinations to the substantially different clinical examination tasks of the third year OSCE. However, the stability of self-assessment accuracy compares favorably with the stability of actual performance over this period. These results suggest that self-assessment accuracy is a relatively stable individual characteristic that may be influenced by task familiarity.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75505/1/j.1365-2923.2003.01567.x.pd

Understanding Seafood Consumption and Healthy Living Practices Report 2010

This report documents the findings of a small cross-sectional survey conducted from November 6 - 9th 2010. The survey was administered to 48 people via random interception at the Melbourne Exhibition Centre. Respondents were asked to complete demographic information, consumption and perception of seafood to other proteins (chicken, pork, lamb and beef), what types of seafood consumed in the past week and the preparation methods used. Respondents were also asked whether they participated in physical activities and what barriers they had to recreational fishing. Although the sample size was small, this study provided validation to the survey instrument used. Reliability will now be assessed and the survey modified accordingly for use in a larger study to be conducted through CESSH. The study has also provided some direction for further work within a community based model of behaviour change communication