首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   46篇
  免费   5篇
  2023年   1篇
  2022年   1篇
  2020年   2篇
  2019年   2篇
  2018年   5篇
  2017年   6篇
  2016年   3篇
  2015年   4篇
  2014年   4篇
  2013年   3篇
  2012年   4篇
  2011年   2篇
  2010年   1篇
  2009年   2篇
  2008年   1篇
  2006年   1篇
  2005年   2篇
  2003年   2篇
  2000年   2篇
  1995年   2篇
  1983年   1篇
排序方式: 共有51条查询结果,搜索用时 0 毫秒
41.
Identifying integrated urban areas is an important issue for urban analysis and policy evaluation. In this article, we provide a set of FUAs suitable for monitoring urbanization in Ecuador, a less developed country without commuting data. We do so substituting such socioeconomic flows by available information on road structure, which allow us to work with accessibility based on a varying travel time. In order to build Ecuadorean FUAs, we calibrate our methodology considering Colombian data. We perform several sensitivity analysis and robustness checks to Ecuador with alternative sources of socioeconomic flows. We conclude that the use of GIS data and the calibrated thresholds provide a set of FUAs similar to the ones that would result of using commuting information.  相似文献   
42.
43.
After four years of occupation, Belgium emerged ruined at the end of the Great War. The King returned from Yser, leading the army and acclaimed by the population. In contrast, the government and the exiles came back discreetly and the absence of the dead was felt strongly. Part of the population felt itself to be the victim of the occupation and sought revenge: shop windows were broken and houses sacked, men were molested and women's heads shaven. Manufacturers who had closed their businesses sought the severe repression of those who had pursued their activities. Journalists who had stopped writing called for harsh treatment of the newspapers that submitted to German censorship. A fraction of the population stigmatised those who profited from the occupation and demanded justice. In 1918, Belgium was already confronted with problems that most European countries only discovered at the end of the Second World War. How does one move on from a war of occupation? How does one reconstruct a state weakened by occupation? How does one handle collective vengeance and respond to calls for justice? This article will study successively the wave of ‘popular’ violence accompanying the country's liberation in November and December 1918 and the state's answer through the judiciary repression of collaboration with the enemy conducted between 1919 and 1921, mainly by military and civil tribunals.  相似文献   
44.
In this paper we seek to check for a number of interactions between firms and the external environment. We aim to contribute to the discussion on the role of the regional environment in a firm's innovation performance. We test the statistical significance of a number of particular interactions between institutions and firm innovation. In particular, we have hypothesized the association between trade and professional institutions, technological centres, and cooperation arrangements and innovation. In contrast with existing studies, we have provided empirical evidence of the impact of external factors on individual firms.  相似文献   
45.
The presence of cobbles with activity-related marks in the Mesolithic site of Font del Ros (Berga, Spain), and in particular one group of artefacts – pitted stones – raises problematic issues associated with the characterization of percussion activities. Although these artefacts have generated an extensive bibliography on ethological, ethnographic, ethnoarchaeological and archaeological levels, various questions persist in relation to their possible contextual function. In this paper we present the results of an experimental programme in which three types of activities that could create pitted stones are reproduced: bipolar knapping of vein quartz, hazelnut cracking, and hazelnut grinding. The aim of this experimental programme is to describe marks and use-wear traces related to such activities.  相似文献   
46.
The study of fabrics, that is, the analysis of the orientation and slope of archaeological and sedimentary materials associated with the Middle Palaeolithic/Upper Palaeolithic (MP/UP) transition at Cova Gran shows substantial differences. Archaeological assemblages are characterised by greater isotropy in the fabrics than the sedimentary levels within which they are located, indicating that these differences may be generated by anthropic processes. One of the anthropogenic processes associated with horizontal and vertical displacement of archaeological artefacts is trampling and circulation caused by later occupations. In order to evaluate the effect of movement on materials, we undertook experiments simulating geological and archaeological conditions at Cova Gran. The results show that human trampling does not cause major isotropy in fabrics, but arranges archaeological assemblages towards planar or linear materials according to surface geometry. We were not able to replicate the fabric pattern of materials from the archaeological levels of Cova Gran, suggesting that they must be associated with the activities of human occupation at each level.  相似文献   
47.
48.
49.
50.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号