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Zhaohui Pan Min Zhu You’An Zhu Liantao Jia 《Alcheringa: An Australasian Journal of Paleontology》2018,42(1):10-21
Pan, Z., Zhu, M., Zhu, Y. &; Jia, L., August 2017. A new antiarch placoderm from the Emsian (Early Devonian) of Wuding, Yunnan, China. Alcheringa 42, 10–21. ISSN 0311-5518.Wufengshania magniforaminis, a new genus and species of the Euantiarcha (Placodermi: Antiarcha), is described from the late Emsian (Early Devonian) of Wuding, Yunnan, southwestern China. The referred specimens were three-dimensionally preserved in black shales, allowing a high-resolution computed tomography reconstruction of anatomical details. The new euantiarch is characterized by a large orbital fenestra, an arched exoskeletal band around the orbital fenestra and a developed obtected nuchal area of the skull roof. Maximum parsimony analysis, using a revised data-set of antiarchs with 44 taxa and 66 characters, resolves Wufengshania gen. nov. as a member of the Bothriolepididae, which is characterized by the presence of the infraorbital sensory canal diverging on the lateral plate, and the nuchal plate with orbital facets. New analysis supports a sister group relationship between Dianolepis and the Bothriolepididae. Luquanolepis, a coeval euantiarch from the neighboring site of the new form, is referred to the Asterolepidoidei and represents the basalmost and earliest member of the Asterolepidoidei.Zhaohui Pan* [panzhaohui@ivpp. ac. cn], Min Zhu* [zhumin@ivpp. ac. cn], You’an Zhu? [zhuyouan@ivpp. ac. cn] and Liantao Jia [jialiantao@ivpp. ac. cn] Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, PO Box 643, Beijing 100044, PR China. *Also affiliated with University of Chinese Academy of Sciences, Beijing, 100049, PR China. ?Also affiliated with Uppsala University, PO Box 256, 751 05 Uppsala, Sweden. 相似文献
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卢梭的“自然美”思想丰赡深邃,精远宏阔.从美育目标、理念、重点三个层面梳理了卢梭自然主义美育思想的核心内容,将其教育特点归纳为整体性、平民性、情感性和自然性,并着重阐述了这一思想对新时期我国美育工作的四个重要启示:即注重美育工作的辩证性;尊重美育实践的主体性;激励美育过程的情感性;倡导美育内容的生态性. 相似文献
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一、骆驼书屋的主人及其藏书概况
有关藏书家徐祖正的资料,仅<文献家通考>中有这样的叙述:"徐祖正,江苏昆山人,字号、生卒年及仕履未详. 相似文献
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M. Ma G. Dong X. Liu E. Lightfoot F. Chen H. Wang H. Li M. K. Jones 《International Journal of Osteoarchaeology》2015,25(6):923-934
Intercontinental exchanges between communities living in different parts of Eurasia during the late prehistoric period have become increasingly popular as a topic of archaeological research. The Qijia culture, found in northwest China, is one of the key archaeological cultures that can shed light on trans‐Eurasian exchange because a variety of imports are found in this cultural context. These imports include new cereals and animals, which suggest that human diets may also have changed compared with previous periods. To understand human and animal diets of the Qijia culture, carbon and nitrogen isotope ratios from human and animal skeletal remains were analysed from the type site of the Qijia culture at Qijiaping. The results demonstrate that human diet at the site mainly consisted of millet and animals fed on millet. C3 cereals, such as wheat and barley, did not contribute significantly to human diet, and no isotopic differences were found between adult and subadult diets. Furthermore, three outlying human results raise the possibility of exogenous individuals, perhaps in relation to the parallel movement of animals, crops and goods. This study provides human and animal dietary information for evaluating the nature of exchange and diffusion in eastern Eurasia at this time. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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宛西自治:一场夭折的区域现代化实验 总被引:3,自引:0,他引:3
20世纪30—40年代,宛西地区发生了一场在“三自主义”指导下的区域性现代化实验。这场以追求“丰衣足食、安居乐业”为目标的实验.植根于本土化的基础之上,由于地理环境的独特和地方精英的努力而取得了一定的成绩;由于理论的局限和对封建土地制度的容忍,得不到广大贫苦群众的拥护而中途夭折。 相似文献
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美国建国初期,随着政治文化的变动与地方市场的发展,费城工匠的生活面临诸多困境。对此,他们借助“共和主义”的话语追求“公共利益、自由、平等与独立”,以表达抗议与不满。与此同时,工匠的共和话语蕴含着复杂多元的价值取向。这反映了美国早期资本主义发展进程中极其复杂的多重矛盾冲突。这些矛盾,不仅存在于工匠与倾向于“精英统治”的政治精英之间,也存在于工匠内部。当工匠将这些复杂的价值取向转化为行动后,对美国早期资本主义发展产生了意义深远的影响。一方面,工匠促进公共利益的诉求转化为反对精英拥有特权的行动,推进了美国早期自由资本主义发展;另一方面,在美国早期自由资本主义发展过程中,雇主与雇员之间的矛盾加剧,双方对于“平等”的不同诉求,使美国产生新的社会冲突,形成了新的社会阶级。 相似文献
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Dong Weimin 《中国历史研究》2017,50(4):299-308
ABSTRACTDuring its assault on Nanjing, the Japanese Army bombarded and sank the USS Panay, an American gunship, straining the relations between Japan and the United States. During the Nanjing Massacre, to ease tensions with the United States, Japan allowed the staff of the American embassy in Nanjing to make an early return to the city. While investigating allegations that Japanese troops had trespassed on American property and kidnapped and raped a Chinese woman, the American diplomat John M. Allison was struck in the face by a Japanese soldier. The U.S. government exerted pressure on Japan over what was referred to as the “Allison Incident”: under orders from Tokyo, the Japanese occupying force in Nanjing apologized to Allison and placed the officers and soldiers involved in the incident under court-martial. The incident was thereby resolved. However, amidst the furor of the “Allison Incident,” the Chinese woman who had been assaulted was forgotten by both the American and Japanese governments as well as by public opinion. The Japanese soldiers were placed under court-martial not for raping the Chinese woman, but rather for striking an American diplomat. The U.S. government received a great many reports on the atrocities committed by the Japanese Army, but in policy and deed, the American response was limited to safeguarding its national interests in China. 相似文献
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In order to evaluate the seismic risk of transportation networks, it is necessary to develop a methodology that integrates the probabilities of occurrence of seismic events in a region, the vulnerability of the civil infrastructure, and the consequences of the seismic hazard to the society, environment, and economy. In this article, a framework for the time-variant seismic sustainability and risk assessment of highway bridge networks is presented. The sustainability of the network is quantified in terms of its social, environmental, and economic metrics. These include the expected downtime, expected energy waste and carbon dioxide emissions, and the expected loss. The methodology considers the probability of occurrence of a set of seismic scenarios that reflect the seismic activity of the region. The performance of network links is quantified based on individual bridge performance evaluated through fragility analyses. The sustainability and risk depend on the damage states of both the links and the bridges within the network following an earthquake scenario. The time-variation of the sustainability metrics and risk due to structural deterioration is identified. The approach is illustrated on a transportation network located in Alameda County, California. 相似文献