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Examination of African barbed bone points recovered from Holocene sites provides a context to interpret three Late Pleistocene occurrences from Katanda and Ishango, Zaire, and White Paintings Shelter, Botswana. In sites dated to ca. 10,000 BP and younger, such artifacts are found widely distributed across the Sahara Desert, the Sahel, the Nile, and the East African Lakes. They are present in both ceramic and aceramic contexts, sometimes associated with domesticates. The almost-universal presence of fish remains indicates a subsistence adaptation which incorporates a riverine/lacustrine component. Typologically these points exhibit sufficient similarity in form and method of manufacture to be subsumed within a single African tradition. They are absent at Fayum, where a distinct Natufian form occurs. Specimens dating to ca. 20,000 BP at Ishango, possibly a similar age at White Paintings Shelter, and up to 90,000 BP at Katanda clearly fall within this same African tradition and thus indicate a very long-term continuity which crosses traditionally conceived sub-Saharan cultural boundaries. L'étude des pointes barbelées en os del' Holocène africaine fournit un contexte à l'interprétation de trois gisements du Pleistocene superieure, notamment, Katanda et Ishango (en République Démocratique du Congo, ex-Zaire), et White Paintings Shelter au Botswana. Cettes pointes ont une distribution étendue à travers le Sahara, le Sahel, le Nil et les grands lacs du rift d'Afrique orientale, notamment sur certains sites datant de 10,000 ans avant notre ère. Ces pointes sont associées avec des types d'industries céramiques ou acéramiques, avec ou sans squelettes de faune domestiques, mais toujours avec des squelettes de poisson, indiquent une subsistence comportant des ressources lacustres ou riveraines. Sur le plan typologique, cettes pointes présentent une telle ressemblance, soit de forme, soit de manufacture, qu'elles constituent une tradition unique africaine. Au Fayum en Egypte, les formes des pointes rappellent, par contre, plutôt les series Natufiennes du Levant. Les pointes barbelées d'Ishango, datant de 20,000 ans environ, celles de White Paintings Shelter, datant probablement de la même époque, et celles de Katanda datant au maximum de 90,000 ans BP, appartiennent à la même tradition africaine, ce qu montre ainsi l'existence d'une continuité de très longue durée àtravers les frontières culturelles traditionelles.  相似文献   

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This article assesses the locally varying effects of gun ownership levels on total and gun homicide rates in the contiguous United States using cross-sectional county data for the period 2009–2015. Employing a multiscale geographically weighted instrumental variables regression that takes into account spatial nonstationarity in the processes and the endogenous nature of gun ownership levels, estimates show that gun ownership exerts spatially monotonically negative effects on total and gun homicide rates, indicating that there are no counties supporting the “more guns, more crime” hypothesis for these two highly important crime categories. The number of counties in the contiguous United States where the “more guns, less crime” hypothesis is confirmed is limited to at least 1258 counties (44.8% of the sample) with the strongest total homicide-decreasing effects concentrated in southeastern Texas and the deep south. On the other hand, stricter state gun control laws exert spatially monotonically negative effects on gun homicide rates with the strongest effects concentrated in the southern tip of Texas extending toward the deep south.  相似文献   

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Geographic Isolation: Origins of the Guns, Germs, and Steel Model   总被引:1,自引:0,他引:1  
Mark Cowell 《对极》2003,35(4):807-812
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none 《英国考古学会志》2013,166(1):152-159
Abstract

This paper presents a case for identifying the Westminster Retable as the thirteenth-century high altarpiece of Westminster Abbey. It considers the evidence of the construction and size of the panel, and argues for the suitability of a panel painting for the high altar dossal at so comparatively early a date. The apostolic and eucharistic iconography of the paintings is also held to argue for such a function.  相似文献   

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Inspired by the vibrant state of the last several decades of scholarship concerning the Qing frontier, the three authors of this introduction organized the “International Workshop on Defining the Jecen: The Evolution of the Qing Frontier, 1644-1918,” which took place on May 25-26, 2012, at the sponsoring institutions-Hong Kong Baptist University and the Hong Kong Institute for the Humanities and Social Sciences at the University of Hong Kong. The primary objective of the workshop was to foster dialogue among colleagues from several Asian and North American institutions who currently are researching the Qing frontier. All participants were encouraged to contribute insights into long-standing questions based on the methodologies derived from their own scholarly backgrounds. Apart from aiming to break down unnecessary barriers of language, geography, and theoretical orientation, the conference also promoted two approaches to the topic that will simultaneously further the progress of contemporary pioneers and open fresh paths for future innovation.  相似文献   

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