9,922 research outputs found

    Preventing Tax Foreclosures in the City of Buffalo

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    Over the past three years, tax foreclosures have risen approximately 150% in the city of Buffalo. While tax foreclosures are spread across the city, they are heavily concentrated in the Masten and Fillmore districts of the city. To combat the increase in tax foreclosures, Buffalo should study the principle causes of tax foreclosures in the area and be prepared to provide financial education classes, payment plans extending for more than one year, and financial assistance to qualified individuals (low to 0% interest loans). Unfortunately, the lack of definitive information on the causes of tax foreclosures in Buffalo makes it impossible to provide a specific combination/ratio that the city should follow in applying these remedies to prevent tax foreclosures

    Self-Evaluation in Youth Media and Technology Programs: A Report to the Time Warner Foundation

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    This 2003 report documents the self-evaluation practices, challenges, and concerns of the Time Warner Foundation's Community Grantees; reviews the resources available to youth media programs wishing to conduct program and outcome evaluations; and begins to identify useful directions for further exploration

    Growing Resistance: Canadian Farmers and the Politics of Genetically Modified Wheat by Emily Eaton

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    Review of Growing Resistance: Canadian Farmers and the Politics of Genetically Modified Wheat by Emily Eaton

    Understanding Next-Generation VR: Classifying Commodity Clusters for Immersive Virtual Reality

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    Commodity clusters offer the ability to deliver higher performance computer graphics at lower prices than traditional graphics supercomputers. Immersive virtual reality systems demand notoriously high computational requirements to deliver adequate real-time graphics, leading to the emergence of commodity clusters for immersive virtual reality. Such clusters deliver the graphics power needed by leveraging the combined power of several computers to meet the demands of real-time interactive immersive computer graphics.However, the field of commodity cluster-based virtual reality is still in early stages of development and the field is currently adhoc in nature and lacks order. There is no accepted means for comparing approaches and implementers are left with instinctual or trial-and-error means for selecting an approach.This paper provides a classification system that facilitates understanding not only of the nature of different clustering systems but also the interrelations between them. The system is built from a new model for generalized computer graphics applications, which is based on the flow of data through a sequence of operations over the entire context of the application. Prior models and classification systems have been too focused in context and application whereas the system described here provides a unified means for comparison of works within the field

    Graphics Hardware Implementation of the Parameter-Less Self-Organising Map

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    This paper presents a highly parallel implementation of a new type of Self-Organising Map (SOM) using graphics hardware. The Parameter-Less SOM smoothly adapts to new data while preserving the mapping formed by previous data. It is therefore in principle highly suited for interactive use, however for large data sets the computational requirements are prohibitive. This paper will present an implementation on commodity graphics hardware which uses two forms of parallelism to signi¯cantly reduce this barrier. The performance is analysed experi- mentally and algorithmically. An advantage to using graphics hardware is that visualisation is essentially free", thus increasing its suitability for interactive exploration of large data sets

    Feynman integrals for a class of exponentially growing potentials

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    We construct the Feynman integrands for a class of exponentially growing time-dependent potentials as white noise functionals. We show that they solve the Schroedinger equation. The Morse potential is considered as a special case

    Isolation by distance in a population of a small land snail Trochoidea geyeri : evidence from direct and indirect methods

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    Population structure was estimated in a continuous population of a small land snail (Trochoidea geyeri). Mark-recapture experiments and randomly amplified polymorphic DNA analyses indicate that the population structure can be described by the isolation by distance model of Wright (1946). Estimates of density and dispersal suggest a neighbourhood size of 70-208 individuals on an area of 13-21 m². A principal component analysis of the randomly amplified polymorphic DNA data reveals clinal variation of genetic composition across the population, as predicted by the neighbourhood concept. An analysis of molecular variance indicates substantial genetic structuring. Comparisons of the genetic distances, expressed as euclidean distances among individuals, versus the geographic distance between sampling sites yield a highly significant positive correlation (Mantel test: r = 0.567, p<0.0001). The revealed pattern of populational subdivision on a microgeographic scale seems to be one of the principal processes generating and maintaining genetic diversity within populations of small land gastropods
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