535 research outputs found
Singular Radon transforms and maximal functions under convexity assumptions
We prove variable coefficient versions of L^p boundedness results on Hilbert
transforms and maximal functions along convex curves in the plane.Comment: 19 pages, to appear in Revista Matematica Iberoamerican
Bounds for singular fractional integrals and related Fourier integral operators
We prove sharp L^p-L^q endpoint bounds for singular fractional integral
operators and related Fourier integral operators, under the nonvanishing
rotational curvature assumption.Comment: 30 page
Measuring Ecosystem Service Benefits: The Use of Landscape Analysis to Evaluate Environmental Trades and Compensation
Ecosystem compensation and exchange programs require benefit analysis in order to guarantee that compensation or trades preserve the social benefits lost when ecosystems are destroyed or degraded. This study derives, applies, and critiques a set of ecosystem benefits indicators (EBIs). Organized around the concept of ecosystem services and basic valuation principles we show how GIS mappings of the physical and social landscape can improve understanding of the ecosystem benefits arising from specific ecosystems. The indicator system focuses on landscape factors that limit or enhance an ecosystem's ability to provide services and that limit or enhance the expected value of those services. The analysis yields an organized, descriptive, and numerical depiction of sites involved in specific mitigation projects. Indicator-based evaluations are applied to existing wetland mitigation projects in Florida and Maryland in order to practically illustrate the virtues and limits of the approach.Ecosystem Valuation, Wetlands, Spatial Analysis, Landscape Analysis
Panel discussion: U.S. EPA using modeling and ecosystem services to enhance coastal decision making
This panel will discuss the research being conducted, and the models being used in three current coastal EPA
studies being conducted on ecosystem services in Tampa Bay, the Chesapeake Bay and the Coastal Carolinas.
These studies are intended to provide a broader and more comprehensive approach to policy and decision-making
affecting coastal ecosystems as well as provide an account of valued services that have heretofore been largely
unrecognized. Interim research products, including updated and integrated spatial data, models and model
frameworks, and interactive decision support systems will be demonstrated to engage potential users and to elicit
feedback. It is anticipated that the near-term impact of the projects will be to increase the awareness by coastal
communities and coastal managers of the implications of their actions and to foster partnerships for ecosystem
services research and applications. (PDF contains 4 pages
\u3cem\u3eSantosky v. Kramer\u3c/em\u3e: Clear and Convincing Evidence in Actions to Terminate Parental Rights
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