83 research outputs found

    Double Exchange Models: Self Consistent Renormalisation

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    We propose a scheme for constructing classical spin Hamiltonians from Hunds coupled spin-fermion models in the limit J_H/t \to \infinity. The strong coupling between fermions and the core spins requires self-consistent calculation of the effective exchange in the model, either in the presence of inhomogeneities or with changing temperature. In this paper we establish the formalism and discuss results mainly on the ``clean'' double exchange model, with self consistently renormalised couplings, and compare our results with exact simulations. Our method allows access to system sizes much beyond the reach of exact simulations, and we can study transport and optical properties of the model without artificial broadening. The method discussed here forms the foundation of our papers Phys. Rev. Lett. 91, 246602 (2003), and Phys. Rev. Lett. 92, 126602 (2004).Comment: 11 pages revtex. Final version, to appear in EPJ

    Movements in Queer Mississippi: Photos from New Orleans

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    These images, taken in New Orleans, La. by students of HST/SOC 596 in Fall 2022, were part of the Movements in Queer Mississippi exhibit during the Isom Student Gender Conference in 2023

    Movements in Queer Mississippi: Photos from Memphis

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    These images, taken in Memphis, Tenn. by students of HST/SOC 596 in Fall 2022, were part of the Movements in Queer Mississippi exhibit during the Isom Student Gender Conference in 2023

    Movements in Queer Mississippi: Religion

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    Students of HST/SOC 596 in Fall 2022 compiled quotations from the Queer Mississippi Oral History Interviews Collection in addition to ephemera as part of the Movements in Queer Mississippi exhibit during the Isom Student Gender Conference in 2023

    Movements in Queer Mississippi

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    An exhibit about Movements in Queer Mississippi presented at the annual Isom Student Gender Conference at the University of Mississippi and curated by students in HST/SOC 596 in Fall 2022. Students used materials from Archives and Special Collections, visible in these display cases and on the walls, to tell the story of Mississippi\u27s queer past and present, and to spark conversations about the future of Mississippi\u27s queer community

    Movements in Queer Mississippi: American Family Association Journal Excerpts

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    Headlines and sample text from the American Family Association Journal were selected by students of HST/SOC 596 in Fall 2022 to form a segment of the Movements in Queer Mississippi exhibit during the Isom Student Gender Conference in 2023

    Movements in Queer Mississippi: Visibility and Discretion

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    Students of HST/SOC 596 in Fall 2022 compiled quotations from the Queer Mississippi Oral History Interviews Collection in addition to ephemera as part of the Movements in Queer Mississippi exhibit during the Isom Student Gender Conference in 2023

    Movements in Queer Mississippi: Performance

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    Students of HST/SOC 596 in Fall 2022 compiled quotations from the Queer Mississippi Oral History Interviews Collection in addition to ephemera as part of the Movements in Queer Mississippi exhibit during the Isom Student Gender Conference in 2023

    Movements in Queer Mississippi: Photos from Atlanta

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    These images, taken in Atlanta, Ga. by students of HST/SOC 596 in Fall 2022, were part of the Movements in Queer Mississippi exhibit during the Isom Student Gender Conference in 2023

    Insufficiency in the Dispute Settlement Mechanism of the WTO : Consequences and Implications for the Multilateral Trading System

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    Trends of trade disputes show that the developed countries are more active in the dispute settlement process of the World Trade Organization (WTO) than the developing countries. Our analyses show that financial strength is an important factor for countries to participate in the dispute settlement process of the WTO. It also plays significant role in winning trade disputes. Therefore, lack of financial strength could be an explanation for the low rate of participation of the small-developing countries in the dispute settlement process. A close look at the Understanding on Rules and Procedures Governing the Settlement of Disputes (DSU) reveals that it has considerable inability to provide feasible remedies against unfair trade practices. This also discourages the small-developing countries to participate in the dispute settlement process. To ensure equitable participation of the developing countries in the dispute settlement process, the WTO should increase legal and technical assistance for the small-developing countries. At the same time the WTO needs to ensure quick resolution of the disputes and replace the provision of "retaliation" with other meaningful remedies.departmental bulletin pape
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