26,002 research outputs found

    2005 Community Foundation Global Status Report

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    In 1999 the International Programs department of the Council on Foundations and the newly-formed Worldwide Initiatives for Grantmaker Support-Community Foundations (WINGS-CF) sponsored a project to track for the first time the global development of community foundations. This resulted in 2000 in the publication of The Growth of Community Foundations Around the World. In 2003, WINGS-CF reshaped and updated the report to focus on international community foundation trends and developments since the previous report. It became the first in a series of three annual reports

    2004 Community Foundation Global Status Report

    Get PDF
    In 1999 the International Programs department of the Council on Foundations and the newly-formed Worldwide Initiatives for Grantmaker Support -- Community Foundations (WINGS-CF) sponsored a project to track for the first time the global development of community foundations. This resulted in 2000 in the publication of "The Growth of Community Foundations Around the World". In 2003, WINGS-CF and the Council on Foundations reshaped and updated the report to focus on international community foundation trends and developments since the previous report

    Magnetically actuated tuning method for Gunn oscillators

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    A tunable microwave generator based on the Gunn effect is disclosed. The generator includes a semiconductor material which exhibits the Gunn effect when current flows between anode and cathode end contacts. The material has a plurality of sides each with a scratch at a different distance from the anode contact. A magnetic field is produced by a magnet placed about the semiconductor field. The Lorentz force produced as a function of the current flow and the magnetic field drive the electrons to the surface of one of the sides to cause nucleation to occur at the scratch. A domain formed thereat travels to the anode contact to provide pulses at a frequency which is related to the distance between the scratch and the anode contact

    David F. Cavers

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    International Connections: Resources That Support the Growth and Development of Community Foundations Globally

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    Documents international linkages between, and support for, the promotion and development of community foundations. Identifies gaps in funding and support

    Resource and Application Models for Advanced Grid Schedulers

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    As Grid computing is becoming an inevitable future, managing, scheduling and monitoring dynamic, heterogeneous resources will present new challenges. Solutions will have to be agile and adaptive, support self-organization and autonomous management, while maintaining optimal resource utilisation. Presented in this paper are basic principles and architectural concepts for efficient resource allocation in heterogeneous Grid environment

    Geometric Rounding and Feature Separation in Meshes

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    Geometric rounding of a mesh is the task of approximating its vertex coordinates by floating point numbers while preserving mesh structure. Geometric rounding allows algorithms of computational geometry to interface with numerical algorithms. We present a practical geometric rounding algorithm for 3D triangle meshes that preserves the topology of the mesh. The basis of the algorithm is a novel strategy: 1) modify the mesh to achieve a feature separation that prevents topology changes when the coordinates change by the rounding unit; and 2) round each vertex coordinate to the closest floating point number. Feature separation is also useful on its own, for example for satisfying minimum separation rules in CAD models. We demonstrate a robust, accurate implementation
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