6,013 research outputs found

    Britain's New Deal and the Next Round of U.S. Welfare Reform

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    The United States will begin another round of debate on welfare reform during the 107th Congress, which convened in January 2001. The new congress and administration must decide on reauthorization of funding for Temporary Assistance for Needy Families, the program established in 1996 as a replacement for Aid to Families with Dependent Children. Among other things, the reauthorization debate will focus on issues of program funding, rationalization, performance, best practice, and direction. This paper argues that all phases of this debate would benefit from more widespread understanding and appreciation of the British Labour government's welfare reform program, including both the New Deal welfare-to-work programs and related changes in benefits and coverage. This paper reviews the ideology, strategy, and implementation of British innovations with regard to links to U.S. reforms and as a source of new perspectives and ideas for the reauthorization debate.

    The 'psychic pet' phenomenon: a reply to Rupert Sheldrake

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    Original article can be found at: http://www.spr.ac.uk/expcms/Rupert Sheldrake (1999a) has published a note in the previous issue of the Journal criticising our research into the ‘psychic pet’ phenomenon. Certain points arising from this criticism have also been included in his recent book, Dogs That Know When Their Owners Are Coming Home and Other Unexplained Powers of Animals (Sheldrake 1999b). This paper outlines why we believe his criticisms to be invalid.Peer reviewe

    Detection of short-term changes in vegetation cover by use of LANDSAT imagery

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    The author has identified the following significant results. By using a constant band 6 to band 5 radiance ratio of 1.25, the changing pattern of areas of relatively dense vegetation cover was detected for the semiarid region in the vicinity of Tucson, Arizona. Electronically produced binary thematic masks were used to map areas with dense vegetation. The foliar cover threshold represented by the ratio was not accurately determined but field measurements show that the threshold lies in the range of 10 to 25 percent foliage cover. Montana evergreen forests with constant dense cover were correctly shown to exceed the threshold on all dates. The summer active grassland exceeded the threshold in the summer unless rainfall was insufficient. Desert areas exceeded the threshold during the spring of 1973 following heavy rains; the same areas during the rainless spring of 1974 did not exceed threshold. Irrigated fields, parks, golf courses, and riparian communities were among the habitats most frequently surpassing the threshold

    Measuring measurement--disturbance relationships with weak values

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    Using formal definitions for measurement precision {\epsilon} and disturbance (measurement backaction) {\eta}, Ozawa [Phys. Rev. A 67, 042105 (2003)] has shown that Heisenberg's claimed relation between these quantities is false in general. Here we show that the quantities introduced by Ozawa can be determined experimentally, using no prior knowledge of the measurement under investigation --- both quantities correspond to the root-mean-squared difference given by a weak-valued probability distribution. We propose a simple three-qubit experiment which would illustrate the failure of Heisenberg's measurement--disturbance relation, and the validity of an alternative relation proposed by Ozawa

    Two-dimensional Site-Bond Percolation as an Example of Self-Averaging System

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    The Harris-Aharony criterion for a statistical model predicts, that if a specific heat exponent α≄0\alpha \ge 0, then this model does not exhibit self-averaging. In two-dimensional percolation model the index α=−1/2\alpha=-{1/2}. It means that, in accordance with the Harris-Aharony criterion, the model can exhibit self-averaging properties. We study numerically the relative variances RMR_{M} and RχR_{\chi} for the probability MM of a site belongin to the "infinite" (maximum) cluster and the mean finite cluster size χ\chi. It was shown, that two-dimensional site-bound percolation on the square lattice, where the bonds play the role of impurity and the sites play the role of the statistical ensemble, over which the averaging is performed, exhibits self-averaging properties.Comment: 15 pages, 5 figure

    Do CEOs Ever Lose? Fairness Perspective on the Allocation of Residuals Between CEOs and Shareholders

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    In this study we introduce a justice perspective to examining the result of bargaining between CEOs and boards over the allocation of firm residuals that ultimately determines CEO compensation. Framing CEO pay as the result of bargaining between CEOs and boards focuses attention on the power of CEOs to increase their share of firm residuals in the form of increased compensation, and the diligence of boards of directors to constrain CEO opportunism. Framing this negotiation through a theory of justice offers an alternative perspective to the search for pay-performance sensitivity. We predict and find that as board diligence in controlling opportunism declines and CEO power increases, CEOs are increasingly able to capture a larger portion of firm residuals relative to shareholders. This finding supports critics who charge that CEO pay violates norms of distributive and procedural justice

    Non-steroidal antiinflammatory drugs: facts and fallacies

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    On quantum error-correction by classical feedback in discrete time

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    We consider the problem of correcting the errors incurred from sending quantum information through a noisy quantum environment by using classical information obtained from a measurement on the environment. For discrete time Markovian evolutions, in the case of fixed measurement on the environment, we give criteria for quantum information to be perfectly corrigible and characterize the related feedback. Then we analyze the case when perfect correction is not possible and, in the qubit case, we find optimal feedback maximizing the channel fidelity.Comment: 11 pages, 1 figure, revtex
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