作者：Allard, SW; Tolman, RM; Rosen, D
作者单位：Brown University; University of Michigan System; University of Michigan; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh
摘要：Currently, welfare programs coordinate a range of services to support work among welfare recipients and help them overcome barriers to employment. This paper considers the relationship between spatial proximity to and utilization of support services among welfare recipients. Accessibility of mental health and substance abuse service providers among welfare recipients is examined in the three-county Detroit metropolitan area and the relationship between mental health service accessibility and m...
作者：Schweitzer, L
作者单位：University of California System; University of California Los Angeles
作者：Bendixsen, S; de Guchteneire, P
作者：Popp, D
作者单位：Syracuse University
摘要：one advantage often cited for market-based environmental policies is that they are more likely to promote technological innovation than are command and control regulations. This paper uses patent data to study innovation in flue gas desulfurization units (scrubbers) across these policy regimes. Plant level data indicate that the effect of these patents on pollution control changed after passage of the 1990 Clean Air Act, which instituted a market for sulfur dioxide (SO2) permits. Previous regu...
作者：Schweitzer, L
作者单位：University of California System; University of California Los Angeles
