642 research outputs found

    The Relationship between Early Disability Onset and Education and Employment

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    The early onset of disability (at birth through young adulthood) can affect a person's employment outcomes in myriad ways. In addition to the direct effect of disability on employment, early onset of disability likely affects the acquisition of education and job skills (human capital). This reduced "investment" in human capital in turn may reduce the individual's employment and earnings prospects throughout their lifetime. If this is the case, people with early onset of disability may be doubly disadvantaged when it comes to later employment prospects.This study analyzes how early onset of disability (onset prior to age 22) affects employment opportunities both directly and as a result of reduced investment in human capital (education) for a younger cohort (ages 22 to 35) and older cohort (ages 44 to 54). In our young cohort, we find that people with early onset of disability have a lower probability of completing high school and a lower probability of being employed than those without disabilities. Lower employment rates result from both lower levels of high school completion and a direct negative impact of disability on work. In the older cohort, we find the employment of those with disability is lower than those without disability, regardless of age of onset. However, those with early onset of disability have significantly higher employment rates than those with later onset of disability (after age 22). We hypothesize that this is a result of people with onset of disability prior to age 22 either choose careers that can be more easily accommodated than the careers people with later disability onset have, or that people with early onset of disability are more likely to be adept at seeking and using accommodations than those with later disability onset. These results suggest that policies and programs to increase employment of persons with disabilities should focus on ways to increase education levels of those with early onset of disability. They also suggest that return-to-work efforts focused on older cohorts of persons with disabilities may want to separately target programs to those with early onset of disability

    Barriers to and Supports for Work Among Adults with Disabilities: Results from the NHIS-D

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    This paper examines barriers to work among adults with disabilities in two specific areas -- searching for jobs and workplace accommodations -- using data from the 1994/95 National Health Interview Survey Disability Supplement. Focusing on the subgroup with a high likelihood of future work, we find that a majority report difficulties searching for work, particularly in gaining information about appropriate jobs and having transportation to search. About a third of non-workers report needing workplace accommodations in order to work. The specific types of accommodations needed are similar to those being used by current workers with disabilities. We also find that need for accommodation, even after controlling for severity of disability, reduces the probability of work

    Space station thermal control surfaces. Volume 1: Interim report

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    The U.S. space program goals for long-duration manned missions place particular demands on thermal-control systems. The objective of this program is to develop plans which are based on the present thermal-control technology, and which will keep pace with the other space program elements. The program tasks are as follows: (1) requirements analysis, with the objectives to define the thermal-control-surface requirements for both space station and 25 kW power module, to analyze the missions, and to determine the thermal-control-surface technology needed to satisfy both sets of requirements; (2) technology assessment, with the objectives to perform a literature/industry survey on thermal-control surfaces, to compare current technology with the requirements developed in the first task, and to determine what technology advancements are required for both the space station and the 25 kW power module; and (3) program planning that defines new initiative and/or program augmentation for development and testing areas required to provide the proper environment control for the space station and the 25 kW power module

    The Next Stage for Social Policy: Encouraging Work and Family Formation Among Low-Income Men

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    Examines proposals to create work incentives for less-educated young men by changing the Earned Income Tax Credit for the childless into an individual work credit and reducing the marriage penalty. Simulates each proposal's effects, with cost estimates

    Space station thermal control surfaces

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    Mission planning documents were used to analyze the radiator design and thermal control surface requirements for both space station and 25-kW power module, to analyze the missions, and to determine the thermal control technology needed to satisfy both sets of requirements. Parameters such as thermal control coating degradation, vehicle attitude, self eclipsing, variation in solar constant, albedo, and Earth emission are considered. Four computer programs were developed which provide a preliminary design and evaluation tool for active radiator systems in LEO and GEO. Two programs were developed as general programs for space station analysis. Both types of programs find the radiator-flow solution and evaluate external heat loads in the same way. Fortran listings are included

    Heat-transfer and pressure drop correlations for hydrogen and nitrogen flowing through tungsten wire mesh at temperatures to 5200 deg r

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    Heat transfer and friction pressure drop for forced convection of hydrogen and nitrogen through electrically heated tungsten wire mes

    A 4500 deg R /2500 deg K/ flowing-gas facility

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    High temperature flowing gas heater consisting of four stages for heating gase

    STS-3 Snowflake study

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    Videotape recordings were made of particles observed being released from the orbiter and image processing techniques were used to reduce the data in order to obtain sources and sizes. Results show that a significant number of 1 mm to 1 cm diameter particles were in the vicinity of STS-3. Their origin may be near the aft end of the orbiter; however, 19 of the 33 examined trajectories show that the origin was definitely forward of the aft end of the bay. There may be larger particles near the aft end of the orbiter. Most particles move generally rearward with respect to the orbiter (+X direction)

    Factors influencing reductions in smoking among Australian adolescents

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    © 2016 Harris. A continued increase in the proportion of adolescents who never smoke, as well as an understanding of factors that influence reductions in smoking among this susceptible population, is crucial. The World Health Organization Framework Convention on Tobacco Control provides an appropriate structure to briefly examine Australian and New South Wales policies and programs that are influencing reductions in smoking among adolescents in Australia. This paper provides an overview of price and recent tax measures to reduce the demand for tobacco, the evolution of smoke-free environment policies, changes to tobacco labelling and packaging, public education campaigns, and restrictions to curb tobacco advertising. It also discusses supplyreduction measures that limit adolescents' access to tobacco products. Consideration is given to emerging priorities to achieve continued declines in smoking by Australian adolescents

    Effective range function below threshold

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    We demonstrate that the kernel of the Lippmann-Schwinger equation, associated with interactions consisting of a sum of the Coulomb plus a short range nuclear potential, below threshold becomes degenerate. Taking advantage of this fact, we present a simple method of calculating the effective range function for negative energies. This may be useful in practice since the effective range expansion extrapolated to threshold allows to extract low-energy scattering parameters: the Coulomb-modified scattering length and the effective range.Comment: 14 pages, 1 figur
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