7,394 research outputs found
Policy and Practice Brief: The Transition from School to Work; The Special Education and State Vocational Rehabilitation Systems’ Obligations to Prepare Students with Disabilities for the World of Work
This brief provides an overview of the transition requirements outlined in the Individuals with Disabilities Education Act. Reviewed are concepts of free appropriate public education, least restrictive environment; individual education programs; and, due process. The brief provides an illustrated case study along with a discussion of how special education and vocational rehabilitation intersect
Policy and Practice Brief: Funding of Assistive Technology to Make Work a Reality, Part II; Using the Americans with Disabilities Act to Fund AT
This article is a continuation of “Funding Assistive Technology to Make Work a Reality” (Policy and Practice Brief #3). This brief reviews the provisions of the Americans with Disabilities Act (ADA) with a particular emphasis on how the ADA can be used to ensure that a person with a disability has access to needed assistive technology to do their job, or to ensure the individual has access to the job site
Policy and Practice Brief: Effect of Defaulted Student Loans on Return to Work Efforts
This brief describes types of student loans that exist and effects or defaulted student loans on individuals benefits. Reviewed are increased efforts to collect on defaulted student loans as well as remedies to take a loan out of default
Policy and Practice Brief: State and Federal Vocational Rehabilitation Programs
This brief provides an introduction to the state and federal vocational rehabilitation system outlined in the Rehabilitation Act of 1973. It provides a review of how the vocational rehabilitation system is integrated within the broader Workforce Investment Act along with a break down for eligibility and available services. Discussed is financial need criteria, statutory requirements for maximization of employment, comparable services requirements and individual rights and appeals
Heat flux microsensor measurements and calibrations
A new thin-film heat flux gage has been fabricated specifically for severe high temperature operation using platinum and platinum-10 percent rhodium for the thermocouple elements. Radiation calibrations of this gage were performed at the AEDC facility over the available heat flux range (approx. 1.0 - 1,000 W/cu cm). The gage output was linear with heat flux with a slight increase in sensitivity with increasing surface temperature. Survivability of gages was demonstrated in quench tests from 500 C into liquid nitrogen. Successful operation of gages to surface temperatures of 750 C has been achieved. No additional cooling of the gages is required because the gages are always at the same temperature as the substrate material. A video of oxyacetylene flame tests with real-time heat flux and temperature output is available
A dynamic model of Venus's gravity field
Unlike Earth, long wavelength gravity anomalies and topography correlate well on Venus. Venus's admittance curve from spherical harmonic degree 2 to 18 is inconsistent with either Airy or Pratt isostasy, but is consistent with dynamic support from mantle convection. A model using whole mantle flow and a high viscosity near surface layer overlying a constant viscosity mantle reproduces this admittance curve. On Earth, the effective viscosity deduced from geoid modeling increases by a factor of 300 from the asthenosphere to the lower mantle. These viscosity estimates may be biased by the neglect of lateral variations in mantle viscosity associated with hot plumes and cold subducted slabs. The different effective viscosity profiles for Earth and Venus may reflect their convective styles, with tectonism and mantle heat transport dominated by hot plumes on Venus and by subducted slabs on Earth. Convection at degree 2 appears much stronger on Earth than on Venus. A degree 2 convective structure may be unstable on Venus, but may have been stabilized on Earth by the insulating effects of the Pangean supercontinental assemblage
Higher Order Variational Integrators: a polynomial approach
We reconsider the variational derivation of symplectic partitioned
Runge-Kutta schemes. Such type of variational integrators are of great
importance since they integrate mechanical systems with high order accuracy
while preserving the structural properties of these systems, like the
symplectic form, the evolution of the momentum maps or the energy behaviour.
Also they are easily applicable to optimal control problems based on mechanical
systems as proposed in Ober-Bl\"obaum et al. [2011].
Following the same approach, we develop a family of variational integrators
to which we refer as symplectic Galerkin schemes in contrast to symplectic
partitioned Runge-Kutta. These two families of integrators are, in principle
and by construction, different one from the other. Furthermore, the symplectic
Galerkin family can as easily be applied in optimal control problems, for which
Campos et al. [2012b] is a particular case.Comment: 12 pages, 1 table, 23rd Congress on Differential Equations and
Applications, CEDYA 201
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