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ABSTRACT. We determine the location equilibria in a duopoly model under a novel solution concept. Typically, spatial equilibrium is described as either a simultaneous price and location game, or else as a two-stage location-then-price game. We introduce a new alternative, a two-stage price-then-location game. It is well known that no (pure strategy) equilibrium usually exists under the two standard solution concepts when products are homogeneous. We show this is also true for the new concept. We then provide numerical results for a specific functional form (the logit model) which introduces product heterogeneity into the standard framework, restoring equilibrium when the degree of substitutability between products is not too small. 相似文献
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Emerging debates on the contemporary reconfigurations of work question previous understandings of the relationships among and between waged, unwaged, and reproductive labour, situated processes of value formation and/or enclosure, and the constitution and limits of contemporary capitalism. Taking Cindi Katz's notion of countertopographies and Gillian Hart's notion of relational comparison as inspirations, this Symposium draws attention to new and existing conceptual frames and modes of analysis to situate contemporary permutations of work within the shifting dynamics of uneven development in specific state, local, and institutional contexts. This Introduction summarises the interrelated and overlapping contributions that papers in this Symposium offer methodologically, analytically, and politically. The open-ended aspiration that emerges from these contributions is that close attention to heterogeneous formations of work outside the wage might help to multiply forms of vigilance and critical praxis necessary to resist the co-optation and enclosure of people's creative energies, and move toward realising the latent liberatory potentials that several of the contributions suggest. 相似文献
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Glaire D. Anderson 《Journal of Medieval History》2016,42(1):107-130
ABSTRACTThis article re-examines the most celebrated, and most controversial, of the Cordoban ivories, the al-Mughīra pyxis, from a perspective of gender and kinship relations within the court hierarchy. It proposes an alternative patron for this object, namely al-Mughīra's mother al-Mushtaq, a consort of the Cordoban Umayyad caliph ?Abd al-Rahmān III (r. 929–61) in the latter years of his life, and a patron of architecture. The article suggests astronomical and astrological possibilities for interpreting the pyxis’ unusual iconography, which arise from considering al-Mushtaq as a potential patron of the al-Mughīra pyxis. Key to the argument is the notion that women in the Cordoban court were ‘makers’ of art and architecture, in that they could and did exercise authority through artistic patronage. 相似文献
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Raphael Eisenhofer Atholl Anderson Keith Dobney Alan Cooper Laura S. Weyrich 《The Journal of Island and Coastal Archaeology》2019,14(2):149-162
Ancient human migrations provide the critical genetic background to historical and contemporary human demographic patterns. However, our ability to infer past human migration events, especially those that occurred over rapid timescales, is often limited. A key example is the peopling of Polynesia, where the timing is relatively well defined, but the exact routes taken during the final stages and the source populations are not. Here, we discuss the technical limitations of current methods for inferring rapid human migration events, using the final stages of Polynesian migration as an example. We also introduce a promising new proxy method to infer human migrations—patterns of bacterial evolution within ancient dental calculus (calcified plaque). While we focus on Polynesia, this method should be applicable to other past migrations, enhancing our understanding of human prehistory and revealing the crucial events that shaped it. 相似文献
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