长江经济带交通基础设施空间均衡度研究

利用1997-2013年长江经济带各省份数据,研究了交通基础设施空间均衡和极化程度及其影响因素,并构建动态面板数据模型,采用系统GMM估计进行了实证检验。研究结果表明:长江经济带交通基础设施发展较快,但存在空间非均衡和空间极化特征;铁路密度和公路密度的空间非均衡程度依次递减,区域间差距是空间非均衡的主要原因;公路密度空间极化程度不断增加,且高于铁路密度的极化程度;财政支出、国际贸易、人力资源和新经济地理四大因素对交通基础设施空间均衡和极化具有影响,但影响效果不同。本文拓展了交通基础设施的研究,为长江经济带交通基础设施协调发展及互联互通战略顺利实施提供了政策依据。     

反共主义与杜鲁门政府越南政策的演变

虽然二战后期美国即有意"国际托管"印度支那,但由于英法两国的强烈反对,再加上美国远东利益所需,第一次印支战争爆发后美国最终默许法国重返越南,"不插手"印度支那问题;但随着"杜鲁门主义"的出台,反共主义成为美国外交的主要考虑,为了遏制共产主义的扩张,美国开始"积极介入"越南事务;新中国成立和朝鲜战争爆发后,美国更加加紧了在越南的干涉。     

NSC37/8文件与美国对台政策转变

新中国成立前后美国不断调整对台政策,杜鲁门政府放弃扶植台独势力、台湾地方当局实现"台湾地区特殊化"的意图,转而重视蒋介石集团对新中国的牵制作用。1949年10月6日美国国家安全委员会制定的NSC37/8号文件——《美国对台湾的立场》,显示出杜鲁门政府接受了蒋介石盘踞台湾的现实。该文件的出笼昭示着美台利益的合流,也预示美国维持两岸分离的努力必然受到蒋介石集团坚持一个中国原则的影响,显示出中国革命的发展是扭转美国策动台湾独立的决定力量。     

花萼相辉楼的功能性质研究

花萼相辉楼是唐玄宗时期建造的重要建筑,所建目的最初为联络兄弟感情,宴饮,随着开元二十四年的扩建,其又逐渐具备了举行大型宴会,组织文武举人考试的功能。     

Construction of a quartz OSL standardised growth curve (SGC) for aeolian samples from the Horqin dunefield in northeastern China

It has been suggested that the standardised growth curve (SGC) method can be used to de-terminate D_e accurately and reduce the measurement time. However, different opinions regarding the applicability of the SGC method exist. In this paper, we report the construction of quartz OSL SGC for 35 aeolian samples from different parts of the Horqin dunefield in northeastern China, and then test their applicability for D_e determination. Our results suggest that: 1) up to a regeneration dose of 80 Gy, the SGC of the Horqin dunefield can be fitted using the exponential plus linear equation, with the r² value of 0.97, and all the regeneration dose points closely stick to the fitting line, implying that all samples share a very similar dose-response curve; 2) for samples with Des ranging from 1 to 50 Gy, the ratios of SAR D_e to SGC D_e fall within the range of 0.9–1.1, and the average ratio of SAR D_e to SGC D_e is 1.01±0.01, close to unity. Therefore, the construction of SGC is correct, and the SGC is an effective procedure for accurate D_e determination for samples from the study area.     

Cultural Heritage Management in Post-colonial Polities: not the heritage of the other

Ebel es‐Saqi, a village in the southern hills of Lebanon, emerged from 22 years of Israeli occupation in May 2000. In the ensuing years, several development projects took place in the region with the aim of reviving local economies through tourism, enhancing attachment to the land through employment and spreading environmental awareness. One of these projects, the Ecological Park Project of Ebel es‐Saqi, is the subject of this paper. Through examining local perceptions and reactions to the Ebel es‐Saqi project, this paper explores how local conceptions of landscape evolve in response to political, economic, and social change. The findings of the study, based on in‐depth semi‐structured interviews, suggest that the village landscape is an enabling medium through which traditional culture is preserved, local identities constructed and rural heritage acknowledged. This paper unfolds a conception of landscape based on the day‐to‐day lifestyles of the village community, inherited traditional agricultural practices, valued rural heritage and shared village identity.     

新文化地理学视角下的文化景观研究进展

论文梳理近三十年英美新文化地理学有关文化景观的研究脉络,介绍文化、意义和表征等基本概念。按哲学基础将其分为社会马克思主义影响下的景观面纱、生产研究,语言学影响下的景观文本研究,知识建构论的景观作为梭子,女性主义影响下的景观作为凝视,以及景观想象与身份问题研究。多元化的哲学基础和研究方法开拓了研究视野,也促进了人文地理学研究范式的转变。     

Where Do the Lead Ingots of the Saintes‐maries‐de‐la‐mer Wreck Come From? Archaeology Compared With Physics

The lead isotope compositions of many different samples from lead ingots of Roman age from two relicts (from Cabrera, and from Saintes‐Maries‐de‐la‐Mer) of the Western Mediterranean have been measured. Other lead isotope analyses of ores, metals or lead ingots from mines of Sierra Morena and from Cartagena and Sardinia have been accomplished. All the lead isotope measurements have been performed at the Joint Research Centre of the European Union, Ispra (Va), Italy. The samples have been prepared in a class 100 clean room, using only ultrapure reagents and FEP materials. In view of the archaeological arguments, it was possible to believe that the Roman lead ingots of the Saintes‐Maries‐de‐la‐Mer 1 wreck came from Spanish lodes, as well as those of the Cabrera 5 wreck. In fact, while the comparison between the first group of ingots (Cabrera 5) and the lead from Sierra Morena is consistent, the correspondence between the second group of ingots (Saintes‐Maries‐de‐la‐Mer 1) and the Cevennes ores (southern France) gives rise to several problems concerning the archaeological and physical origins. These problems are discussed.     

旅游客源预测的神经网络方法

对旅游业来说,客源是赖以存在和发展的关键因素。根据游客人数的多少,旅游接待地可相应确定旅游接待服务设施规模,因此对游客数量进行预测是很重要而且是十分必要的。本文提出了一种基于人工神经网络的旅游客源预测方法,用以对旅游客源进行预测。文中首先介绍了神经网络的基本原理,以及BP算法的运算过程。在此基础上,针对入境旅游人数预测的特定问题构造了一个神经网络模型,对近些年入境旅游人数进行了较为准确的预测,并将其结果与传统方法进行了比较。结果表明:该方法能有效地对旅游客源进行预测,结果优于传统方法,具有很高的准确性和鲁棒性。