在朝或居乡:元末明初师儒汪叡的出处选择

元明易代之际儒者的出处选择,不仅取决于个体的心性特质,更是当事人的身份背景和行事经历的反映.晚明史籍常将婺源汪叡视为明代开国时期重要的循良师儒,但却忽略了他对于洪武朝廷所秉持的疏离态度.元末动乱使汪叡有机会从默默无闻的乡儒崛起为绥靖地方的精英,但这一经历在明初却同样给他带来了无法避免的政治困境,以至于汪叡虽然曾短暂入仕,却始终难以充分建立对新朝的政治认同.     

The Archaeometry and Archaeology of Ancient Chinese Glass: a Review

This paper provides a new review of archaeometric research carried out on glass found in China, set in an archaeological context, from its earliest occurrence to the Song dynasty. It is set within a broad geographical context taking the terrestrial and maritime Silk Road contacts into account. We discuss chemical and isotopic compositional contrasts in glasses from different periods found in different parts of China, the glasses that were almost certainly made in China and those that were imported. A theme that runs through the paper is the problem of provenancing glass found in China, along with a lack of evidence for primary glass‐making sites and minimal evidence for secondary glass production. We discuss the glass artefacts that are of typical Chinese types and contrast these with imports; the structure reflects this contrast. We discuss potential new scientific and archaeological approaches to Chinese glass.     

A new antiarch placoderm from the Emsian (Early Devonian) of Wuding,Yunnan, China

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.     

俄罗斯外国劳务移民与中国移民研究

论文利用俄罗斯联邦移民局和联邦统计局的数据,采用统计分析法,探讨近年来俄罗斯移民尤其是劳务移民的数量、结构、地区分布、从事行业以及中国移民在俄罗斯的发展状况,指出了俄罗斯在制定移民政策存在的弊端,并从"现有移民政策的局限"和"有效管理外国劳务移民"等方面提出了对策建议。认为一国移民政策的制定和调整应符合该国经济和人口发展的大局,而且要认识到移民是在经济全球化大背景下,促进区域经济一体化的重要力量。     

Updating Numerical Models of Masonry Arch Bridges by Operational Modal Analysis

This article aims at presenting and discussing the strategies for updating the finite element numerical modeling of stone masonry arch bridges using operational modal analysis. The study comprehended three bridges: two old ones, the St. Lázaro and the Lagoncinha bridges, and a recently constructed bridge in Vila Fria, Portugal. Updating of the bridge models is performed by comparing the numerical and experimental modal parameters. Three-dimensional detailed numerical models are used to perform modal analysis of the bridges. Experimental modal identification of the bridges is based on the measurement of their acceleration responses during normal operation. The assigned material properties are also based on available results obtained from in situ and laboratory tests and on the results of visual inspection and historical research carried out for both old bridges.     

元代徽州路的军功家族

文章利用《汪氏渊源录》和《回岭汪氏宗谱》以及相关元代文集为主要参考资料,研究了元代徽州路的军功家族群体,尤其是其中的典型个案———婺源回岭汪氏。作者认为婺源回岭汪元龙、汪元圭兄弟在宋元易代之际,因为归附蒙元及“保障乡里”之功走上致身荣显的仕宦之路,他们不仅自身建立了可观的权势,而且有效地将之世代传承,以与元朝统治相始终,最终使婺源回岭汪氏家族成为“朱紫满庭”的“新安巨室”。在元代的徽州,类似的军功家族分布广泛,人数众多,深具影响。他们的出现,与元代统治者重视“根脚”的政治铨选原则紧密相关,与那些在蒙元征服战争中出现的“汉军世家”具有相似的来源和特点。     

Latent trajectory models for space‐time analysis: An application in deciphering spatial panel data

This article introduces latent trajectory models (LTMs), an approach often employed in social sciences to handle longitudinal data, to the arena of GIScience, particularly space‐time analysis. Using the space‐time data collected at county level for the whole United States through webpage search on the keyword “climate change,” we show that LTMs, when combined with eigenvector filtering of spatial dependence in data, are very useful in unveiling temporal trends hidden in such data: the webpage‐data derived popularity measure for climate change has been increasing from December 2011 to March 2013, but the increase rate has been slowing down. In addition, LTMs help reveal potential mechanisms behind observed space‐time trajectories through linking the webpage‐data derived popularity measure about climate change to a set of socio‐demographic covariates. Our analysis shows that controlling for population density, greater drought exposure, higher percent of people who are 16 years old or above, and higher household income are positively predictive of the trajectory slopes. Higher percentages of Republicans and number of hot days in summer are negatively related to the trajectory slopes. Implications of these results are examined, concluding with consideration of the potential utility of LTMs in space‐time analysis and more generally in GIScience.     

Policy Networks in Complex Governance Subsystems: Observing and Comparing Hyperlink,Media, and Partnership Networks

Methods for observing policy networks have not kept up with the development of new network analytic techniques required to understand governance in complex settings. We compare three unobtrusive methods for observing policy networks based on hyperlinks between policy actor web sites, on media reports, and on public policy partnerships. Observations of one complex local water policy arena with all three methods provide a comparison of the general as well as actor‐specific network characteristics in the three observed networks. The core network of actors observed by all methods has similar network level statistics, highly correlated relationships measured by Quadratic Assignment Procedures models, and the same significant network microstructures as measured by Exponential Random Graph Models. The full networks including actors observed by any method also exhibit similar actor‐level characteristics, although the correlations across networks are stronger for bridging capital measures than for bonding capital measures, and each method has different apparent biases. Once biases are accounted for, similarities suggest that these methods may provide useful proxies for each other and for other relationships that are more difficult or impossible to measure, particularly when combined to offset each method's biases. If so, they can extend the range of policy networks observable with limited resources across space and time.     

从最近的考古发现看北方粟作农业的起源问题

中国北方最早的粟作农业可以追溯到距今16000年的山西下川旧石器晚期文化,而距今13000年～9000年是中国北方粟作农业的大发展阶段,其中,北京东胡林人类文化遗址为这个发展过程提供了比较丰富的资料.可以证实华北是中国北方农业文明的重要发源地.