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51.
Artifact assemblages from long-inhabited sites may include ceramic types and wares from multiple time periods, making temporal comparisons between sites difficult. This is especially problematic in macro-regional data sets compiled from multiple sources with varying degrees of chronological control. We present a method for chronological apportioning of ceramic assemblages that considers site occupation dates, ceramic production dates, and popularity distribution curves. The chronological apportioning can also be adjusted to take into account different population sizes during the site occupation span. Our method is illustrated with ceramic data from late prehispanic sites in the San Pedro Valley and Tonto Basin, Arizona, U.S.A., compiled as part of the Southwest Social Networks Project. The accuracy of the apportioning method is evaluated by comparing apportioned assemblages with those from nearby contemporaneous single component sites.  相似文献   
52.
A team of U.S. political geographers analyzes the secret Afghanistan war logs released by WikiLeaks.org. They offer the chance to examine in detail the dynamics of the conflict in that country. Doing so in a spatial framework is possible because each of the 77,000 events has geographic coordinates and dates. Using cartographic and geostatistical tools, the authors map the changing distribution of the events and compare them to the well-known violent-events ACLED database (see O'Loughlin et al., 2010 in this issue). They conclude that ACLED comprises a representative set of the more comprehensive data in the released files. The released war logs show that the Afghan insurgency spread rapidly in 2008-2009, that the insurgency is moving out of its traditional Pashtun heartlands, and remains mostly rural in location. Hotspot and cluster analysis identifies the key locations of the current war, which indicate that it is relocating to new provinces in Afghanistan while intensifying in the eastern border regions and in the south.  相似文献   
53.
In this article, ‘Development’ and developmentist ideas, two increasingly fashionable areas of historical inquiry, are explored in the context of relations between the United States and Brazil through the middle decades of the twentieth century, with three arguments made along the way. First, and in contrast to much academic and extra-academic received wisdom (as well as the official pronouncements of US diplomats), the United States government offered no singular or consistent approach to ‘development’ in its dealings with Brazil. Second, an unofficial vision of development (here termed ‘market developmentalism’) that has so far eluded the attention of historians of developmentalist ideas emerged earlier than the official developmentalisms that have been the main object of historiographic interest to date. Third, this unofficial, largely private, consumption-oriented developmentalism is shown to have enjoyed an outsized influence in Brazil, dwarfing the influence enjoyed by those inconsistent varieties of developmentalism espoused by US diplomats between the 1940s and the 1960s.  相似文献   
54.
Isotopic analysis of domestic turkey (Meleagris gallopavo) bones from Shields Pueblo, southwest Colorado, USA, suggests that these birds consumed a diet high in C4 plants. This contrasts with the diet of local herbivores, where much lower percentages of C4 plants were recorded. In view of the prevalence of maize (Zea mays) in the human diet of Ancestral Puebloan people, we suggest that turkeys were fed food scraps and surplus maize, rather than being allowed to forage for themselves. This suggests that turkeys were carefully tended in the household. Analysis of specimens from other sites in the northern Southwest shows that this pattern of turkey feeding characterizes all of the sampled horticultural communities.  相似文献   
55.
抗美援朝战争是新中国成立初期美国侵略当局强加给中国人民的一场战争,也是新中国历史上第一场战争。这场战争为新中国的巩固、建设和发展奠定了基础,是新中国的立国之战。自20世纪90年代以来,随着中国、俄罗斯陆续公布和解密了一批有关抗美援朝战争(朝鲜战争)的历史档案,翻译出版美国、韩国、日本等学者研究著作的增多,研究中出现了许多不同认识。中国人民为进行这场战争付出了重大代价和牺牲,应对这场战争的必要性、正义性和积极意义应给予正确评价。  相似文献   
56.
57.
Neoinstitutionalists applying the logic of rational choice institutionalism have leavened our understanding of public agency design and evolution in the domestic and national security policy domains. This paper seeks to advance theory building in empirically grounded ways by assessing the explanatory power of an important theoretical perspective (rational choice institutionalism), in an understudied "hybrid" policy domain where domestic and national security aims interact (domestic environmental policy and national security policy), and in an organizational type (the U.S. military) that has drawn scant attention from students of bureaucracy in political science, public administration, or public management. Analysis of three major efforts to green the U.S. military suggests that the patterns of politics accompanying agency evolution involving hybrid policy domains differ from domestic and national security domains in ways that limit the generalizability of rational choice institutionalism.  相似文献   
58.
在澳英传统关系变迁中,朝鲜战争无疑是一个标志性事件。朝鲜战争的爆发暴露了英联邦防御机制在远东地区的脆弱性,从而导致澳大利亚在外交和防务决策方面自主意识的增强;朝鲜战争凸显了澳美防务合作的重要性以及亚太地区国际关系的复杂性,并使得澳大利亚借机实现了与美国缔结防务同盟关系的愿望。澳美关系首次取代澳英关系成为澳大利亚外交和防务政策的基石,而澳英关系自此以后则朝着更加平等的方向发展。  相似文献   
59.
The chronological sequence of a major reference site for Neolithic periods in southeastern Europe and the Aegean, Dikili Tash (Macedonia, Greece), has been reassessed by TL. Baked adobe material samples extracted from domestic ovens, directly associated with specific occupational levels, have been studied. The fine‐grain technique has been used for equivalent dose determination. K, U and Th contents and the equilibrium state of U‐series have been measured by low‐background gamma spectroscopy. Since the archaeological levels were already partly excavated, the environmental dose‐rate was evaluated by a reconstruction technique combining laboratory analysis and on‐site measurements. The TL results (weighted average of multiple age determination, oven 400, middle of the Dikili Tash I (DT‐I) phase, 5500 ± 320 bc ; oven 600, end of DT‐I, 4920 ± 310 bc ; house 3, DT‐II, 4260 ± 280 bc ; house 4, DT‐II, 4510 ± 410 bc ) are in general agreement with the timeframe deduced from previous radiocarbon dates. This convergence strengthens the settlement's chronology, established now by independent dating methods.  相似文献   
60.
美国对1962年中印边界冲突的反应   总被引:4,自引:0,他引:4  
王琛 《史学月刊》2002,6(1):89-97,120
美国对1962年中印边界冲突反应与它的南亚政策息息相关。从印巴分治直到中美和解前夕,美国的南亚政策始终有服务于全球冷战的两个目标:力促印巴和解以防止共产主义集团乘机介入;以一切可能的手段使印度放弃中立政策并加入到西方集团。中印边界冲突在美国政府的南亚政策渐入困境时发生,给了美国决策者以莫大的期望,他们企图以其所谓的天赐良机达至以上主要针对中国的冷战目标。然而,中国正确政策及出神入化的实践大大强化了美国在南亚地区既有的结构性困境,使肯尼迪政府利用中印冲突的图谋以失败而告终。  相似文献   
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