18,644 research outputs found
Hole doped Hubbard ladders
The formation of stripes in six-leg Hubbard ladders with cylindrical boundary
conditions is investigated for two different hole dopings, where the amplitude
of the hole density modulation is determined in the limits of vanishing DMRG
truncation errors and infinitely long ladders. The results give strong evidence
that stripes exist in the ground state of these systems for strong but not for
weak Hubbard couplings. The doping dependence of these findings is analysed.Comment: 2 pages, 2 figures, submitted to SCES0
Policy and Practice Brief: Order of Selection for Vocational Rehabilitation Services: An Option for State VR Agencies Who Cannot Serve All Eligible Individuals
This Policy and Practice Brief will explore this federally-sanctioned Order of Selection option that is available to state VR agencies. We will explain what financial circumstances tend to lead a state to selecting this option and the alternatives that states may use to either avoid the Order of Selection or limit the individuals whose needs go unmet because the agency never gets to them on the waiting list
VARIATION IN BODY TEMPERATURE AND THERMOREGULATORY BEHAVIOR BETWEEN TWO POPULATIONS OF THE LESSER EARLESS LIZARD, HOLBROOKIA MACULATA
Body temperatures and thermoregulatory behavior of field-active Holbrookia maculata were evaluated for two sites at approximately equal elevation (approximately1200 m) in southern New Mexico: 1) a population at White Sands National Monument, and 2) a population at the Jornada Long-term Ecological Research site. H. maculata at WS had significantly lower body temperatures (mean = 36.3°C) than those measured at the Jornada Long-term Ecological Research site (mean = 39.5°C). The slope of a regression of body temperature on air temperature was significantly different between populations (White Sands National Monument; 0.65, the Jornada Long-term Ecological Research site; 0.36). The microhabitats in which individuals were first observed correlated with body temperatures at White Sands National Monument, but not at the Jornada Long-term Ecological Research site. These data suggest that environmental temperature differences between sites influenced body temperatures and thermoregulation in behavior H. maculata
Volunteer Management Capacity in America's Charities and Congregations
The volunteer management capacity study was completed in 2003 under contract with the Corporation for National and Community Service. Results are based on surveys of separate samples of U.S. charities and congregations. The study concludes that prevailing low levels of management capacity have not translated into widespread concern regarding the challenges of volunteer management. While charities and congregations need help in developing their capacity to recruit and manage volunteers, these organizations are nonetheless eager and prepared to take on additional volunteers. This conclusion has already been taken as validation by the federal government that the President's Call to Service need not be postponed due to an inability of organizations to take on new volunteers
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
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