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Artificial cranial modification (ACM) involves the alteration of cranial vault shape by cultural means, and is performed during infancy while the cranial bones remain soft and malleable. The direction of normal cranial growth is altered through the application of external forces. In this study, three types of ACM from north‐central Peru (posterior flattening, bilobed and circumferential) were analysed using standard craniometric techniques. The aim was to determine the effects of these forms of ACM on craniofacial morphology, and the extent to which different types of ACM could be distinguished from one another and unmodified crania on the basis of these measurements. Significant differences between artificially modified and unmodified crania, and between different types of ACM, were demonstrated in cranial vault shape for all types. Significant differences in facial morphology were found only in the bilobed group compared with the unmodified crania. Canonical variates analysis (discriminant analysis) confirmed that major differences between modification types and unmodified crania were in measurements and angles of the cranial vault. While the results show some similarities to previous studies, they add to the variability in the patterns and extent of differences documented to date. It is suggested, based on these results and visual observations, that interpopulation variation in ACM within major modification categories may explain some of the variability in results between studies, an explanation which has previously received insufficient recognition but which remains to be tested since varied methodology between studies may also be a contributory factor. While previous studies have often sought to generalise about the effects of ACM, the examination of the differences between populations even within major ACM categories may offer new insight into cultural variation in modification techniques between populations and the nature of craniofacial development. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
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This article explores how in the years after 1980 a spectrum of historical actors came to see petroleum platforms in the Gulf of Mexico as a necessary part of the Gulf ecosystem and how such views affected platform removal policies. Through a discourse analysis of the Rigs‐to‐Reefs program, in which old offshore petroleum facilities were converted into artificial reefs, this article examines how actors presented to the public their notions of the relationship of the Gulf ecosystem with technological offshore structures. Through this case we see how ideas of technology and nature were mutually constructed via discourses and what affect that had on policies.  相似文献   
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Notwithstanding the relative abundance of bioarchaeological evidence of pre‐20th century gunshot wounds discovered at European and American archaeological sites, similar findings in East Asian countries have been very rare. In this study, we report evidence of possible gunshot wounds sustained by two individuals buried in Joseon tombs of Korea. The shapes of the trauma seemed to indicate low‐velocity projectiles, most likely musket balls. To our knowledge, this is the first bioarchaeological report specifically concerning possible gunshot‐wound evidence in East Asian skeletons recovered from archaeological fields. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   
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胡淑晶 《攀登》2006,25(6):97-98
科学技术已渗透到我们生活的各个领域,当代科技的产生和发展正在影响着整个世界的经济格局。落后国家要在当代的科技发展中占有一席之地,只有了解当代科技的特征,选择适合自身特点的技术领域,通过加大技术创新的力度,才能在新的世界经济格局中寻找到立足之地。  相似文献   
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Are narratives as influential in gaining the attention of policymakers as expert information, including for complex, technical policy domains such as artificial intelligence (AI) policy? This pre-registered study uses a field experiment to evaluate legislator responsiveness to policy entrepreneur outreach. In partnership with a leading AI think tank, we send more than 7300 U.S. state legislative offices emails about AI policy containing an influence strategy (providing a narrative, expert information, or the organization's background), along with a prominent issue frame about AI (emphasizing technological competition or ethical implications). To assess engagement, we measure link clicks to further resources and webinar registration and attendance. Although AI policy is a highly technical domain, we find that narratives are just as effective as expert information in engaging legislators. Compared to control, expert information and narratives led to 28 and 34 percent increases in policymaker engagement, respectively. Furthermore, higher legislature professionalism and lower state-level prior AI experience are associated with greater engagement with both narratives and expert information. Finally, we find that policymakers are equally engaged by an ethical framing of AI policy as they are with an economic one. The findings advance efforts to bridge scholarship on policy narratives, policy entrepreneurship, and agenda-setting.  相似文献   
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Until the beginning of the twentieth century, history, as a core concept of the political project of modernity, was highly concerned with the future. The many crimes, genocides, and wars perpetuated in the name of historical progress eventually caused unavoidable fractures in the way Western philosophies of history have understood change over time, leading to a depoliticization of the future and a greater emphasis on matters of the present. However, the main claim of the “Historical Futures” project is that the future has not completely disappeared from the focus of historical thinking, and some modalities of the future that have been brought to the attention of historical thought relate to a more-than-human reality. This article aims to confront the prospects of a technological singularity through the eyes of peoples who already live in a world of more-than-human agency. The aim of this confrontation is to create not just an alternative way to think about the future but a stance from which we can explore ways to inhabit and therefore repoliticize historical futures. This article contains a comparative study that has been designed to challenge our technologized imaginations of the future and, at the same time, to infuse the theoretical experiment with contingent historical experiences. Could we consider artificial intelligence as a new historical subject? What about as an agent in a “more-than-human” history? To what extent can we read this new condition through ancient Amerindian notions of time? Traditionally, the relationship between Western anthropocentrism and Amerindian anthropomorphism has been framed in terms of an opposition. We intend to prefigure a less hierarchical and more horizontal relation between systems of thought, one devoid of a fixed center or parameter of reference. Granting the same degree of intellectual dignity to the works of Google engineers and the views of Amazonian shamans, we nevertheless foster an intercultural dialogue (between these two “traditions of reasoning”) about a future in which history can become more-than-human. We introduce potential history as the framework not only to conceptualize Amerindian experiences of time but also to start building an intercultural dialogue that is designed to discuss AI as a historical subject.  相似文献   
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Among a group of seven skeletons from the southern part of Lower Saxony, dating to the Single Grave Culture (ca. 2500BC ), was a double inhumation, which showed an unusual burial position for one of the individuals interred. Deviating from the typical squatted position, this male was supine. Having been badly injured by an arrow shot into the back, he suffered from post-traumatic paraplegia and, most probably died from bacterial meningitis caused by the flint tip that penetrated the spinal cord. This infection was also responsible for the burial position, clearly pointing to an opisthotonus, which is indicative of the final stage of bacterial meningitis. The other individual, also male, had an arrow wound and died from the complications of a severe wound to the intestines.  相似文献   
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This project analyses the wounds sustained by those defending the Crusader castle of Vadum Iacob, which is to the north of the Sea of Galilee in Israel. To our knowledge this is the first Crusader castle garrison to be excavated and studied, and consequently gives unique information concerning medieval battle wounds. The Muslim forces of Saladin stormed the castle in August 1179. The skeletal remains of five of the garrison who were killed during the siege and the execution which followed have been studied, providing a vivid portrait of what it must have been like in the last hours as the castle surrendered. Multiple sword and arrow wounds were noted, and arrowheads were still in situ at the time of their deaths. All the soldiers appear to have been stripped of their armour and then dumped together with corpses of horses that died in the battle. We explore the nature and anatomical location of the wounds in the context of medieval Islamic weapons, battlefield tactics and the defensive armour of the Crusaders. Despite the limited number of soldiers discovered, the unique nature of this site makes the findings of great significance. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   
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