A new arthropod from the Chengjiang Lagerstätte,Early Cambrian,southern China

A new genus and species of lightly sclerotized arthropod with an Aglaspis-like tagmosis, Kwanyinaspis maotianshanensis, is described from the well-known Chengjiang Lagerstätte, Early Cambrian, Yunnan, South China, on the basis of a single exquisitely preserved specimen. The dorsal exoskeleton, showing a poorly defined axial region but lacking axial furrows, is composed of a cephalic shield, 12 trunk tergites with well-developed pleural spines and a tail spine. A pair of ventral eyes is present beneath the first quarter of the cephalic shield. Appendages are preserved in remarkable detail; the basis is a large, flat plate, and bears gnathobases ventrally; the endopod is articulated with the abaxial edge of the basis and comprises seven articles; the exopod is flap-like and articulated along the entire length of the dorsal margin of the basis. Kwanyinaspis is provisionally assigned to Aglaspidida due to its overall resemblance to Aglaspis.     

广州增城墨依山玉器材质和受沁过程分析

为综合研究出土玉器的风化机理,正确评估玉器的保存状况,本研究采用物相、成分和电镜等方法对2016年广州重要考古发现——增城墨依山玉器进行了材质和结构分析,确认了墨依山玉器材质为透闪石。在此基础上,对玉器周边土壤进行了物相、成分、结构和酸碱度等分析,并结合玉器本体和遗址气候条件,综合探讨了强酸性环境下墨依山玉器的受沁过程。本研究有助于丰富对玉器风化机理的认识,有利于科学制定玉器的保护措施。     

吉林农安左家山遗址2015年出土动物骨骼遗存研究

左家山遗址位于吉林省农安县高家屯村西南500 m处。2015年因河水侵蚀,吉林大学边疆考古研究中心等单位对其进行了抢救性考古发掘,出土了猪、狗、羊、马等动物骨骼。通过对出土动物遗存的鉴定与研究,发现新石器时代左家山遗址为一处夏秋季节性居址,先民的生业模式以狩猎、捕捞和采集为主,同时饲养少量家畜。辽金时期该地区被称为“黄龙府”,通过对墓葬内出土动物遗存的分析,推测其与少数民族的“烧饭祭”“殉羊”“殉犬护送灵魂”“头蹄葬”等丧葬习俗密切相关,这为辽金时期北方少数民族文化的交流与融合提供了重要证据;随葬动物种属也在一定程度上反映了当时伊通河流域少数民族的生业模式为农牧结合,且伴有少量的渔猎活动。     

超声CT方法检测古建筑木构件缺陷研究

为实现建筑木构件裂缝及孔洞的检测,采用自主研发的整套超声CT检测系统,包括非金属超声检测仪、微弱信号放大系统、探头直径转换系统、多探头固定系统和超声CT分析软件。检测中采用干耦合技术,不使用任何耦合剂,避免了耦合剂对木质文物的污染。通过实验室标准试块检测得到了与试块实况吻合的检测结果,并对陕西西岳庙古建筑木构件进行了实地检测,取得了良好的检测效果。     

昆明城镇体系空间分布类型及其原因分析

本文在用"D距离内邻点平均数法"定量分析昆明城镇体系空间分布类型的基础上,对造成昆明城镇分布地域差异的原因采用"灰色系统关联分析法"进行了分析,并针对分析结果提出了城镇发展的建议,为昆明市城镇体系规划提供科学依据。     

政治地理学与知识经济

知识经济的到来,极大地改变着区域的政治、经济和文化,改变着人类活动的时间、空间和方式,向政治地理学提出了新的挑战,也为其发展提供了新的机遇。政治地理学和知识经济有着必然的联系,使传统意义上的政治区域、区域政治的概念发生了巨大的变化,政治地理学必然要研究知识经济。本文就政治地理学与知识经济的关系进行了探讨。就如何在继承研究政治地理学传统的基础上,拓展研究空间,为区域政治、经济和文化服务,提出了相关的建议。     

内蒙古生态环境建设与可持续发展

可持续发展思想是当今新的人类生存文明观,她起自于人类对人地关系的反思和认识,也体现了人类对新世纪以及长远未来的展望。区域性可持续发展是全球性可持续发展的基础和保证,只有实现区域性可持续发展才使得全球性的可持续发展成为可能。内蒙古自治区是我国重要的能源、原材料生产基地和农牧业生产大区,同时又是我国重点的经济落后地区。以水土流失、水资源匮乏、植被退化、土地沙化、土壤盐碱化等为代表的生态环境问题已经成为制约内蒙古社会经济可持续发展的核心问题之一。本文将就内蒙古生态环境问题的由来、生态环境现状以及解决生态环境问题的途径加以分析,对西部大开发中的内蒙古生态环境建设提出建设性的意见和建议。     

南京发现北宋佛顶尊胜陀罗尼经幢

发现于南京市的北宋佛顶尊胜陀罗尼经幢,为了解当时的政治、文化、宗教提供了一份珍贵的实物史料。     

Managing International News-Agency Relations under the Guomindang: China’s Central News Agency,Zhao Minheng,and Reuters, 1931–1945

During the Nationalist Era, China dealt with its relatively weaker position in the global geopolitics of news communication by forging and managing strategic collaborations with the world’s leading news agencies. This study analyzes the case of the bilateral contractual relationship between Reuters and the Guomindang (GMD) government’s official news agency, the Central News Agency (CNA). By doing so, the article reveals that in the course of developing useful cooperation with the leading international news agencies to open up inter-institutional and interpersonal channels and networks for disseminating the GMD government’s official news and viewpoints abroad, the GMD government and CNA were also confronted with a growing necessity to manage and control protracted contentions, disputes, and even conflicts arising from the party-state’s persistent attempts to assert news communication sovereignty. The study also highlights the vital role of Zhao Minheng (1904–61)—a US-educated Chinese journalist in the employment of Reuters—as middleman in the CNA-Reuters relationship. Zhao’s career provides us with an important means to analyze CNA’s international news-agency relations from transnational and transcultural perspectives.     

A Note on the Mixed Geographically Weighted Regression Model*

Abstract. A mixed, geographically weighted regression (GWR) model is useful in the situation where certain explanatory variables influencing the response are global while others are local. Undoubtedly, how to identify these two types of the explanatory variables is essential for building such a model. Nevertheless, It seems that there has not been a formal way to achieve this task. Based on some work on the GWR technique and the distribution theory of quadratic forms in normal variables, a statistical test approach is suggested here to identify a mixed GWR model. Then, this note mainly focuses on simulation studies to examine the performance of the test and to provide some guidelines for performing the test in practice. The simulation studies demonstrate that the test works quite well and provides a feasible way to choose an appropriate mixed GWR model for a given data set.