45 research outputs found

    Reforming Public School Systems Through Sustained Union-Management Collaboration

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    Presents case studies of sustained collaboration between teachers' unions and management in school reform; common elements in initiating events, strategic priorities, supportive system infrastructure, and sustaining factors; and lessons learned

    Domain Wall Renormalization Group Study of XY Model with Quenched Random Phase Shifts

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    The XY model with quenched random disorder is studied by a zero temperature domain wall renormalization group method in 2D and 3D. Instead of the usual phase representation we use the charge (vortex) representation to compute the domain wall, or defect, energy. For the gauge glass corresponding to the maximum disorder we reconfirm earlier predictions that there is no ordered phase in 2D but an ordered phase can exist in 3D at low temperature. However, our simulations yield spin stiffness exponents Ξs≈−0.36\theta_{s} \approx -0.36 in 2D and Ξs≈+0.31\theta_{s} \approx +0.31 in 3D, which are considerably larger than previous estimates and strongly suggest that the lower critical dimension is less than three. For the ±J\pm J XY spin glass in 3D, we obtain a spin stiffness exponent Ξs≈+0.10\theta_{s} \approx +0.10 which supports the existence of spin glass order at finite temperature in contrast with previous estimates which obtain Ξs<0\theta_{s}< 0. Our method also allows us to study renormalization group flows of both the coupling constant and the disorder strength with length scale LL. Our results are consistent with recent analytic and numerical studies suggesting the absence of a re-entrant transition in 2D at low temperature. Some possible consequences and connections with real vortex systems are discussed.Comment: 14 pages, 9 figures, revtex

    Institutional Labor Economics, the New Personnel Economics, and Internal Labor Markets: A Reconsideration

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    The author illustrates the utility of institutional labor economics and makes a case for a reconsideration of it. Two recent developments motivate this effort: the rise of New Personnel Economics (NPE) as a significant subfield of labor economics and the substantial shifts in work organization that have taken place since the 1990s. Understanding how and why firms have reorganized work opens the door for a renewed interest in institutional approaches. The author explains that the rules of institutional labor markets (ILMs) emerge from the competition between organizational interest groups—unions, personnel professionals, and the government—and competing views of firms’ objectives—resulting in the rise of ILMs, the slow diffusion of High Performance Work Systems, strategies used to obtain a high level of commitment from workers, the use of contingent employees, and the spread of new promotion rules in response to equal employment opportunity pressures. As such, the role of power and influence in establishing work rules is of central concern, though more conventional NPE considerations also remain important

    Saturn, the GM/UAW partnership : the impact of co-management and joint governance on firm and local union performance

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    Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 1996.Includes bibliographical references (p. 229-240).by Saul Avery Rubenstein.Ph.D
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