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61.
邵笑 《当代中国史研究》2012,(2):96-105,128
中国领导人对越南战争的态度在1968~1971年间发生了转变,即1968年初至1969年上半年,坚决反对越南与美国谈判;1969年下半年至1970年8月,从不干涉越美和谈转变为支持越南谈判;1970年9月后,态度鲜明地支持和谈。中国前后两种立场都引起越南的强烈不满。虽然中国没有以牺牲越南的利益来换得中美关系的缓和,而且在自己并不富裕的条件下,仍给予了越南大量的无偿援助,但这些努力都没有改变越南对中国的不满、疑虑与不安。在中美缓和与越美谈判的进程中,中越关系却不断恶化,这为后来双方的冲突埋下了隐患。  相似文献   
62.
20世纪40年代,以美国国务院驻中国迪化领事馆副领事身份为掩护的中情局间谍马克南在中国新疆从事秘密谍报活动,并于新中国成立前夕率一行五人队伍自中国新疆秘密入藏。但《纽约时报》等美国媒体却矢口否认马克南的间谍身份,并指责"中国的宣传机器在制造美国特务案例"。美国媒体对马克南入藏事件的报道是历史真实与谎言的混合体,其报道内容的缺失,直接影响了美国民众对事实真相的全面了解和客观判断,对今日美国人"西藏观"的形成产生了消极的影响。  相似文献   
63.
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   
64.

As a result of the teaching quality assessment at the Faculty of Spatial Sciences in Groningen (Netherlands), the course 'Gebiedsanalyse' (Area Analysis) was set up in spring 1998. The aim was to provide an opportunity for the development of transferable and geographical skills in the context of a group-based research project at level II. In addition, an effort was made to move from tutor-led to student-led learning. Experiences from the past 3 years have shown that Area Analysis has been largely successful in providing an opportunity for the application of geographical and transferable skills but also for the 'deep empowerment' of undergraduate students.  相似文献   
65.
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   
66.
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   
67.
The prose and poetry of S. Weir Mitchell (1829–1914) – related to the American Civil War – encompass a very significant portion of his non-medical writings. The Civil War, more than any other single event, shaped his future career as one of the founders of American neurology. Indeed, it should not be surprising how the war was also such a driving force in his non-medical writings. His novels, once widely read, now are scarcely noted. His accounts of the social, political and economic events of the Civil War are of historical interest to students of the period. Neuroscientists as a group, like others, are apt to be unfamiliar with these writings, with the possible exception of “The Case of George Dedlow.” A major purpose of this essay is to introduce readers, especially neuroscientists, to Weir Mitchell’s fictional works in which neurological cases so often appear. One appreciates more the medical aspects of his novels, written as they were by a first-hand observer. His non-medical writings, poetry and prose, are to a large extent timeless and can be appreciated by today’s readers.  相似文献   
68.
William S. Halsted was the founding chief of surgery at the Johns Hopkins Hospital. Among his basic principles were (1) the use of the experimental laboratory to solve intraoperative surgical problems, (2) gentle handling of all tissues, and (3) full-time surgical subspecialization. Halsted trained Harvey Cushing, who used Halsted's principles to reinvent neurosurgery to make it successful by lowering mortality and morbidity rates.  相似文献   
69.
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   
70.
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   
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