5,124 research outputs found

    Transmitting values about education: A comparison of black teen mothers and their nonparent peers

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    Central to the debate about why some poor people remain poor is the enduring question of what role values play in behavior patterns as observed in chronically impoverished families and communities. Young black women who grow up in impoverished families in urban ghettos face some similar challenges to becoming competent adults who function independently in the wider society. Not all young women who fit this demographic category become young or single mothers who depend on AFDC; some who do also complete levels of education that lead to economic self-sufficiency. In order to explore the question about values and their significance among the urban poor, we examine the life histories of 50 young black women from inner-city Milwaukee, looking in particular at values and behaviors as they relate to educational competence. We analyze the perceived family values about education, the ways in which the young women's families acted on those stated values with the intention of influencing their daughters' educational outcomes, and how these values and transmission processes are related to the young women's educational attainment.

    Innovation in the Wireless Ecosystem: A Customer-Centric Framework

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    The Federal Communications Commission’s Notice of Inquiry in GN 09-157 Fostering Innovation and Investment in the Wireless Communications Market is a significant event at an opportune moment. Wireless communications has already radically changed the way not only Americans but people the world over communicate with each other and access and share information, and there appears no end in sight to this fundamental shift in communication markets. Although the wireless communications phenomenon is global, the US has played and will continue to play a major role in the shaping of this market. At the start of a new US Administration and important changes in the FCC, it is most appropriate that this proceeding be launched.

    Spectrum Management: Property Rights, Markets, and The Commons

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    Gerald Faulhaber and David Farberconsider alternatives to the current licensing regime for spectrum, which appears to lead to substantial inefficiencies in spectrum allocation.Specifically, they examine two property rights regimes and a commons regime.Theynote that economists have favored a market-based regime while engineers have favored a commons-based regime to promote new technologies. Mr. Faulhaber and Mr. Farbershow that thereis aproperty rights market-based regime that unleashes the power of the market andthe power of the new technologies to efficiently allocate spectrum, and that is likely to meet our needs for the near-term future. This regime resolves the presumed dichotomy between the market-based and the commons-based views, so that both objectives can be realized.The authorsalso outline a transition processfor achieving the desired regime outcome that is a "win-win" for all stakeholders, and that could be politically feasible. The change to a property rights regime is likely to lower the cost of spectrum substantially, in many cases to zero.Mr. Faulhaber and Mr. Farberassert that a commons model and a market model can co-exist, at least until spectrum becomes truly scarce.

    Modern Models of Monopsony in Labor Markets: A Brief Survey

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    This brief survey contains a review of several new empirical papers that attempt to measure the extent of monopsony in labor markets. As noted originally by Joan Robinson, monopsonistic exploitation represents the gap between the value of a worker's marginal product and the worker's wage, and it represents both a distortion in the allocation of resources and an income transfer away from workers. The evidence surveyed from a fairly broad range of labor markets suggests that monopsony may be far more pervasive than is sometimes suggested.imperfect labor markets, monopsony

    Equal Entries in Totally Positive Matrices

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    We show that the maximal number of equal entries in a totally positive (resp. totally nonsingular) n-by-nn\textrm{-by-}n matrix is Θ(n4/3)\Theta(n^{4/3}) (resp. Θ(n3/2\Theta(n^{3/2})). Relationships with point-line incidences in the plane, Bruhat order of permutations, and TPTP completability are also presented. We also examine the number and positionings of equal 2-by-22\textrm{-by-}2 minors in a 2-by-n2\textrm{-by-}n TPTP matrix, and give a relationship between the location of equal 2-by-22\textrm{-by-}2 minors and outerplanar graphs.Comment: 15 page

    Genetic Dissection of a QTL Affecting Bone Geometry.

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    Parameters of bone geometry such as width, length, and cross-sectional area are major determinants of bone strength. Although these traits are highly heritable, few genes influencing bone geometry have been identified. Here, we dissect a major quantitative trait locus (QTL) influencing femur size. This QTL was originally identified in an F2 cross between the C57BL/6J-hg/hg (HG) and CAST/EiJ strains and was referred to as femur length in high growth mice 2 (Feml2). Feml2 was located on chromosome (Chr.) 9 at ∼20 cM. Here, we show that the HG.CAST-(D9Mit249-D9Mit133)/Ucd congenic strain captures Feml2 In an F2 congenic cross, we fine-mapped the location of Feml2 to an ∼6 Mbp region extending from 57.3 to 63.3 Mbp on Chr. 9. We have identified candidates by mining the complete genome sequence of CAST/EiJ and through allele-specific expression (ASE) analysis of growth plates in C57BL/6J × CAST/EiJ F1 hybrids. Interestingly, we also find that the refined location of Feml2 overlaps a cluster of six independent genome-wide associations for human height. This work provides the foundation for the identification of novel genes affecting bone geometry

    New Evidence of a Favorability Effect upon Scores on the Taylor Manifest Anxiety Scale

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    It has been recently suggested that scores on Dr. Janet Taylor\u27s Manifest Anxiety Scale (6) may be influenced by a favorability factor. This factor involves the social evaluation of an item by a subject and his attempt to answer the item in such a manner as to place himself in a socially favorable light. Such a response set may cause a subject to select an item, not only for its adequacy as a description of himself, but also because it may make him look well
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