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Korányi Dávid Gallé Róbert Donkó Bettina Chamberlain Dan E. Batáry Péter 《Urban Ecosystems》2021,24(4):789-800
Urban Ecosystems - Urbanization is one of the most intensive forms of landscape and habitat transformation, resulting in species loss, and taxonomic and functional homogenization of different... 相似文献
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This paper discusses characteristics of standard conjugate priors and their induced posteriors in Bayesian inference for von Mises–Fisher distributions, using either the canonical natural exponential family or the more commonly employed polar coordinate parameterizations. We analyze when standard conjugate priors as well as posteriors are proper, and investigate the Jeffreys prior for the von Mises–Fisher family. Finally, we characterize the proper distributions in the standard conjugate family of the (matrix-valued) von Mises–Fisher distributions on Stiefel manifolds. 相似文献
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We consider one-to-one, one-sided matching (roommate) problems in which agents can either be matched as pairs or remain single.
We introduce a so-called bi-choice graph for each pair of stable matchings and characterize its structure. Exploiting this
structure we obtain as a corollary the “lone wolf” theorem and a decomposability result. The latter result together with transitivity
of blocking leads to an elementary proof of the so-called stable median matching theorem, showing how the often incompatible
concepts of stability (represented by the political economist Adam Smith) and fairness (represented by the political philosopher
John Rawls) can be reconciled for roommate problems. Finally, we extend our results to two-sided matching problems. 相似文献
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Sibylle M. Spangler Gudrun Schwarzer Claudia Freitag Marc Vierhaus Manuel Teubert Ina Fassbender Arnold Lohaus Thorsten Kolling Frauke Graf Claudia Goertz Monika Knopf Bettina Lamm Heidi Keller 《Infancy》2013,18(4):516-533
We investigated the development of the other‐race effect “ORE” in a longitudinal sample of 3‐, 6‐, and 9‐month‐old Caucasian infants. Previous research using cross‐sectional samples has shown an unstable ORE at 3 months, an increase at 6 months and full development at 9 months. In Experiment 1, we tested whether 9‐month‐olds showed the ORE with Caucasian and African faces. As expected, the 9‐month‐olds discriminated faces within their own ethnicity (Caucasian) but not within the unfamiliar ethnicity (African). In months. In Experiment 2, we longitudinally tested infants at 3, 6, and 9 months by presenting either the Caucasian or the African faces used in Experiment 1. In contrast to previous cross‐sectional studies and Experiment 1, we found that infants discriminated between all stimuli. Hence, we did not find the ORE in this longitudinal study even at 9 months. We assume that the infants in our longitudinal study showed no ORE because of previous repetitive exposure to African faces at 3 and 6 months. We argue that only a few presentations of faces from other ethnic categories sufficiently slow the development of the ORE. 相似文献
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