9,814 research outputs found

    The need for speed : Maximizing random walks speed on fixed environments

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    We study nearest neighbor random walks on fixed environments of Z\mathbb{Z} composed of two point types : (1/2,1/2)(1/2,1/2) and (p,1βˆ’p)(p,1-p) for p>1/2p>1/2. We show that for every environment with density of pp drifts bounded by Ξ»\lambda we have lim sup⁑nβ†’βˆžXnn≀(2pβˆ’1)Ξ»\limsup_{n\rightarrow\infty}\frac{X_n}{n}\leq (2p-1)\lambda, where XnX_n is a random walk on the environment. In addition up to some integer effect the environment which gives the best speed is given by equally spaced drifts

    It's Time for Summer: An Analysis of Recent Policy and Funding Opportunities

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    Recommends ways to improve and expand summer learning programs by better coordinating federal, state and local programs, including ensuring that federal program regulations explicitly allow spending for summer programs and creating funding collaboratives

    Getting Ahead or Losing Ground: Economic Mobility in America

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    Combines earlier research to present a comprehensive analysis of relative mobility, absolute mobility, and changes in income inequality. Focuses on intergenerational mobility, immigrants, comparisons by gender and race, and the role of education

    Jewish Community Study of New York: 2011 Special Report on Poverty

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    The sheer scale of needs associated with being poor or near poor dwarfs the resources of even the largest Jewish community in the United States. One is tempted to believe that the scale of need is so vast that the Jewish community should abandon this field to others.Yet since the earliest days of Jewish communal life in New York, the organized Jewish community has accepted its responsibilities to care for those in need. Even since the New Deal, when the federal government took on the primary role of providing a societal safety net, the Jewish community has been active in providing philanthropic support and services for poor and near-poor Jews.The numbers of poor and near-poor Jewish households, the enormous increase in the number of these households over the past 20 years, and the diverse groups affected by poverty create an imperative for an extraordinary response -- from government, the voluntary sector, the philanthropic sector, and all segments of society. These findings suggest that the organized Jewish community needs to take a hard look at current planning, advocacy, service delivery, and resource investment
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