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41.
本文基于历史文献资料,提取清代中期(1723-1850)直隶灾后朝廷组织的跨省赈粮调度相关记载,对逐年赈粮数量进行定量重建。结合同期水旱灾害强度,对其反映的政府救灾力度的总体变化趋势及时空分布特征进行分析,并进一步讨论其影响因素。结果显示,赈粮调度在雍正朝还并非常规赈灾措施,至乾隆朝成为常态,数量上达到顶峰,至嘉道时期则显著衰落;在空间上更偏重于直隶中部的近畿一带,南部则相对易被忽视。当其兴盛之时,在直隶灾后赈济中发挥的作用不可替代,其演变过程在一定程度上既是清王朝兴衰历程的缩影,亦受到各方面因素(如皇帝意志、灾害强度、区位条件、仓储状况、荒政效率等)的综合作用。从中总结的历史经验教训,也可作为当前防灾实践的参考。  相似文献   
42.
选取土默特平原1934、1982和2019年的聚落人口数据,运用GIS空间分析法,定性与定量结合分析研究区聚落分布形态演变及其驱动因素,结果表明,1934—2019年土默特平原以小聚落为主,大规模聚落数量和比例逐年增加,人口等级结构由“扁平”向“长高”金字塔形转变。聚落空间分布整体呈现集聚分布特征,大规模聚落集聚性不显著,其他规模的聚落分布模式由随机向集聚转变,研究区人口极化现象显著;聚落空间分布非均衡发展趋势明显,呈现由极核式向点轴式演变的迹象;聚落网络联系的空间近邻效应显著,人口规模较大的中心城区成为强联系节点。地形、河流、交通是研究区聚落分布形态演变的主要驱动因素,聚落低海拔、邻河流、邻干道、邻城镇的指向性强。该研究便于厘清土默特平原近百年聚落分布形态的演变脉络,为当地聚落的空间布局优化与调控提供一定参考价值。  相似文献   
43.
Focusing on four recent books about violence gives a reader an idea of what current anthropological wisdom is and what it tends to omit (peace, domestic violence). Since most studies deal not with direct observation of violence but with representations of it, questions of representation loom large in terms of how anthropologists represent violence in these books and elsewhere in the literature, and what possibilities of representation might round out readers' understanding.  相似文献   
44.
Unlike other scientific fields, anthropology popularizations are as likely as not to be written by scientists who are not themselves experts in the subject. This is because the subject, the scientific knowledge of our origin and patterns of bio-cultural diversity—or more broadly, who we are and where we come from—is the source of our culturally authoritative origin myths, and consequently of broad general interest in and of itself. But anthropology popularizations come with the responsibility not only to get the facts and theory correct, but as well to understand the history and embedded politics in the stories themselves.  相似文献   
45.
Abstract

The ways in which the author, the sculptor Peter Randall-Page, has made use of the ideas of D’Arcy Thompson are described. How Thompson showed that commonalities of form and pattern exist across the biological and abiotic realms is described, and the implications that physical constraints limit and sometimes dominate the capabilities of evolutionary natural selection are explored. Since we evolved in a world shaped in this manner, the likelihood that this palette of forms is one that carries strong psychological meanings and associations is examined, and the ways in which these forms are a rich source of inspiration and allusion for visual artists are discussed, hinting at the play of opposing tendencies, the dance between order and randomness, and the ways in which nature can derive variations on a theme.  相似文献   
46.
Abstract

Thus far, certainly in English, most engineering history has been based on the lives of engineers or the chronologies of particular enterprises, with the two often woven together. Much of this work, as conventional biography or narrative history, has been well done, in many cases is a good read, and frequently is valuable as a basis for further study. But its preoccupation with who, when and where too often leaves unaddressed questions of how and why. Attempting to understand the intellectual and creative components of engineering's history, especially its early history for which written records are rare or nonexistent, is exceptionally difficult. In this short survey the possibilities of retrospective analysis are discussed, and some of the potential pitfalls are identified by considering the particular case of cathedral building. Over the last twenty or thirty years cathedral studies have generated more publications in the field of retrospective analysis, in this case structural analysis, than possibly any other. Whether or not very much has been learned about the history of the engineering of cathedrals, however, is a good question, and is part of what follows.  相似文献   
47.
In Western Europe the transition from the Iron Age to the Roman period is the scene of a rapid economic and agro-pastoral evolution characterized in particular by a modification in the shape of the cattle. Understanding this phenomenon, its implementation mechanisms and development dynamics represents a major challenge in archaeozoology. In our study a local and regional approach of the evolution in cattle morphology is carried out first on the scale of the middle Seine valley, then of the northern Gaul. Its purpose is to observe and compare the evolution rates in domestic cattle between Middle La Tène and the fifth century AD, and with the help of a tight chronological and geographical grid, to estimate to what extent the shape of the cattle has been influenced by the indigenous cultures, the Roman economic pattern or even the environment. This osteometrical study is based on the Log Size Index method and on a measurement corpus of 12,969 bones collected on sites located on 117 communes in France (for most of them), Belgium, the Netherlands and Switzerland. The results we obtained show local specificities in terms of breeding methods and animal morphologies, observed on a very fine scale and taking place long before the Conquest. Moreover the growth patterns of the various herds happen to be different and to evolve under the impetus of the developing Roman economic pattern. This work thus points out an essential aspect of the agro-pastoral turmoil that took place in Gaul at the turning point of our era. The Roman pattern is not the cause of the morphological changes of the cattle, nor of the diversity in cattle shapes in Gaul, but it provokes a reshaping of the agricultural systems and a redefining of the breeding strategies which boost and completely change the cattle growth patterns.  相似文献   
48.
改革开放以来上海社会空间结构演化的特征与趋势   总被引:1,自引:0,他引:1  
基于第三次和第五次全国人口普查数据,采用因子生态分析方法,对1982年和2000年的上海社会空间结构以及改革开放以来上海社会空间结构演化的特征与趋势进行了研究。结果显示,1982年上海社会空间结构模式相对简单,市区和郊区各自具有较强的同质性;2000年社会空间结构则趋于复杂,异质性特征明显增强,各类社会区间的圈层分布成为主导模式,并呈现指状空间扩散特征。在此基础上,论文从能动者和结构两个层面揭示了上海社会空间结构演化的内在机制。  相似文献   
49.
多重背景下,我国大城市社会空间正在重构。居住分异是研究社会空间分化的重要维度。以上海市闵行区古美街道为例,说明城市向郊区的侵入与接替过程中,社会经济环境、就业等复杂因素综合作用使郊区居住分异由一元同质性社会空间向非均衡多元异质性社会空间转变。演变中凸显了就业市场需求与流动人口居住空间萎缩、空间隔离和农民的社会垂直流动少等问题,建立贫困群体的城市规划、将流动人口纳入廉租房受益范畴,多渠道加强就业信息建设、增强就业培训等是解决问题的关键。  相似文献   
50.
1995年来中国省际入境旅游相对优势演化的空间特征分析   总被引:3,自引:0,他引:3  
靳诚  陆玉麒  徐菁 《人文地理》2010,25(1):148-154
从区位商的角度,通过引入演化概率矩阵,定量的探讨了1995-2005年来中国省际入境旅游相对优势差异的演化情况,并通过对演化概率矩阵的空间分解,分析了空间环境对入境旅游相对优势演化的影响。结果表明,中国省际间入境旅游相对优势存在差异,但这种差异在10年的演化过程中整体上呈现不断下降的态势,差异的变化和政策以及突发事件密切相关。自身的相对优势基础对该地区入境旅游相对优势的演化存在着十分重要的影响,高相对优势基础地区的演化趋向于衰退演化;低相对优势地区的演化趋向于增长演化,且低相对优势基础地区发生突变演化的概率高于高相对优势基础地区。相对优势演化概率在空间上并不独立,东部区域中低相对优势基础地区的增长演化概率明显高于中西部地区,说明东部区域中低相对优势基础地区入境旅游的发展好于中西部地区。区域合作、交通改善、资源开发是演化重要影响因素。  相似文献   
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