长江三角洲都市连绵区城市规模结构演变研究

本文选取长江三角洲都市连绵区7个年份的城市人口规模数据,分别从城市规模等级结构、首位度、城市规模分形以及城市规模的空间演化等层面对城市规模结构的演变进行了分析,初步揭示了长江三角洲都市连绵区规模结构的分布特征和演变规律,并对其空间演变特征进行了总结。     

建设中国特色的城市地理学——中国城市地理学的研究进展评述

城市地理在中国是一门新兴的学科,在最近的三十年里得到了迅速的发展。本文主要评述1980年以来中国城市地理学在城市化、城市体系和城市经济与社会地理的研究进展。本文认为中国经济的迅速起飞导致中国经济和社会的迅速转型,这为中国城市地理学的发展带来难得的机遇。通过近三十年的努力,中国城市地理学已形成自己的研究特色,特别是在城市化和城市体系研究方面已形成自己的独特理论,并具有高度的实践性。     

西周初期墓葬铜礼器器用区位研究——以随州叶家山为中心

随葬礼器在墓中的区位特征对于判断随葬品的性质与用途,探求墓葬器用观念等都具有重要意义。随州叶家山、宝鸡石鼓山墓地可分别作为西周初期诸侯国与王畿地区随葬青铜礼器组合的特点的代表。结合过去发现的同时期墓葬资料可以发现早在西周初期周人已建立起一套较完备的以食器为中心的器用组合关系。就其在墓葬中的区位而言,存在着(1)按大类分置;(2)食、酒水器分置;(3)酒水器聚置,食器分置于酒、水器两端等三种情形,前两种体现出周人重食的文化特征,后一种强调酒器似与周初西迁的殷遗民有关。     

A Ticking Clock? Preservation and Management of Greenland’s Archaeological Heritage in the Twenty-First Century

ABSTRACT

Evaluating the rate of deterioration at archaeological sites in the Arctic presents several challenges. In West Greenland, for example, increasing soil temperatures, perennial thaws, coastal erosion, storm surges, changing microbial communities, and pioneer plant species are observed as increasingly detrimental to the survival of organic archaeological deposits found scattered along the country’s littoral zones and extensive inner fjord systems. This article discusses recent efforts by the REMAINS of Greenland project for developing a standardised protocol that defines the archaeological state of preservation, the preservation conditions, and asset value of organic deposits. Special emphasis is given to the degradation of materials such as bone and wood that are historically observed to be well-preserved in Greenland but now currently at risk. The protocol provides a baseline for monitoring future changes and will assist archaeologists in Greenland with a procedure for documenting and predicting areas of increasing vulnerability due to a warming climate.     

A tale of three cities: negotiating ethnic identity and acculturation in northwest China

Through extensive interviews with Hui, Han, Dongxiang, and Tibetan migrants and participant observation in northwest China between 2013 and 2015, we examine how the negotiation of ethnic identity influences acculturation strategies in three cultural contexts by scrutinizing the three operational aspects of ethnic identity: perceptions, affections, and behaviors. We argue that the ethnic identity is negotiated at both the group and individual levels as a relation of dialectical unification in regard to fixity and fluidity. At the group level, ethnic identity is relatively fixed and rigid and is perceived by most of the group members as the social norms which normalize ethnic behavior collectively. At the individual level, on the other hand, ethnic identity can be highly flowing and contested from one individual to another. Han identity is generally self-perceived as unmarked, porous, situated, and sometimes even vacuous. Han migrants’ acculturation is more dependent on the cultural context of the host society. Hui and Dongxiang migrants show a strong attachment and affective bonds to their ethnic identity, which is largely based on religious identity. Although Tibetan migrants perceive a complex, place-based identity related to their religion, the grassland, their traditional ways of living, and their language, a Tibetan identity seems to be difficult to fulfill given their economic vulnerability and the contradictions between retaining traditions and being Sinicized in the city.     

WHY DO WE CARE ABOUT POST‐HUMANISM? A CRITICAL NOTE

What is disclosed in the questioning of the human being in post‐humanism? Addressing this question in congruence with Heidegger's questioning of being in Being and Time, we end up with two discoveries: first, that the characteristic of Dasein, as the being of the questioning, already carries the same implications as the post‐human figure, and second, that questioning in this sense is indicative of the effort of realizing anew scientific space for conceptualizing the human being as non‐substantialist. Conceived of in this way, however, post‐humanism is a result of a very human effort indeed.     

《帝京景物略》中的岁时民俗记述研究——兼及对当代民俗志书写的一点思考

《帝京景物略》是一个北京人和两个旅居北京多年的他乡人在北京著作的有关北京的一本书,作者在卷二"春场"部分按照时序专门对当时的节日文化和节日生活进行了系统书写,另在一些景观描写中也记述了于兹发生的岁时节日活动。这些记述以较强的可信性、时空结合性、可读性使《帝京景物略》中的岁时民俗记述成为一种优秀的传统民俗志。当前,如何书写怎样的民俗志成为当代职业民俗学者普遍关心的话题,有必要适当加强一下对传统民俗志的研究,从而将传统民俗志对当代民俗志书写的可能贡献落到实处。     

基于VRIO框架的饭店资源三维度评价模型

饭店是由各种资源构成的企业组织,饭店资源是与饭店竞争力密切相关的要素。论文在对饭店资源的内涵和结构进行分析的基础上,利用VRIO框架的4个基本问题,构建了饭店资源三维度评价模型。根据该模型,论文对饭店资源的价值性、稀有性和可模仿性分别提出了评价方法,并确定了饭店资源优化的条件。     

基于流形学习与光谱解混的文物表面字迹增强——以云冈第38窟为例

文物表面的文字是了解历史的关键信息，对文物表面文字信息的探索成为文物保护的重要环节。结合流形学习与光谱解混，提出一种新的文物表面字迹增强方法。首先，利用基于流形学习的等距映射方法对预处理后的高光谱图像进行非线性降维，得到信息量最大的灰度图像；其次，分析文字与背景的光谱特征，通过多层非负矩阵分解方法得到字迹丰度图；然后，将二者进行加权平均得到字迹增强图像，再与合成真彩色影像进行HSV融合，得到字迹融合影像；最后，为更好地辨认文字，在字迹增强图像上裁剪文字并做形态学变换，得到字迹提取图。以云冈石窟第38窟的一景褪色文字高光谱图像为例进行了验证，结果表明，该方法能够有效地增强出文物表面的褪色文字，且较其他增强方法效果更好。