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   128篇
  免费   2篇
  2023年   1篇
  2020年   4篇
  2019年   3篇
  2018年   1篇
  2017年   5篇
  2016年   2篇
  2015年   1篇
  2014年   6篇
  2013年   16篇
  2012年   3篇
  2011年   11篇
  2010年   4篇
  2009年   10篇
  2008年   6篇
  2007年   7篇
  2006年   5篇
  2005年   3篇
  2004年   1篇
  2003年   3篇
  2002年   5篇
  2001年   2篇
  2000年   3篇
  1999年   2篇
  1998年   2篇
  1997年   1篇
  1996年   2篇
  1993年   2篇
  1992年   1篇
  1990年   2篇
  1989年   4篇
  1988年   2篇
  1987年   2篇
  1986年   5篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
排序方式: 共有130条查询结果,搜索用时 323 毫秒
1.
2.
3.
4.
5.
Quiet urban areas are places with low noise levels that can help people to support physical and mental wellness. This paper has two objectives: to identify quiet urban areas in Montreal and to check for the presence of environmental inequities in access to such areas for vulnerable groups (children, older people, low‐income individuals, and visible minorities). Using a GIS‐based methodology, 2,282 quiet urban areas were identified in Montreal. The results of a mixed effects logistic regression model analysis showed that there are no major inequities in access to quiet urban areas for the population groups studied. The analysis did, however, revealed substantial spatial disparities in terms of the distribution of quiet urban areas across the boroughs and municipalities examined.  相似文献   
6.
The aim of this paper is to shed light on the importance, for cultural history, of a professional concept from the publishing worl, for example « general literature » - a concept which goes against most of the usual forms of classification and division of intellectual output. Through the use of an « indigenous » source from within the publishing domain such as the advertisement notices published in Bibliographie de la France, one can show the coherence of a wide domain which encompasses - but also widely surpasses - the boundaries of literature as commonly conceived. As one category of publishing output, general literature can be characterized during the first half of the XX th century by the use of the same material form the 12mo whose profound significance is the intention to reach a « wide educated audience ». Thus, it is by taking into account the structure of this output that, through such a domain as general literature, the publishing market allows the question of the actual existence and aspects of learned culture to be raised.  相似文献   
7.
ABSTRACT

This article analyses regional agency in the early phases of new path constitution. We argue that the early stages of new path constitution can be explained by both structural factors and the strong presence of agency. With a specific focus on agency, this article contributes to the literature by providing a study of the role of agency at different stages of path constitution. The study shows that two types of agency operate together. Public policy agency is carried out through a common thrust for policy tools that can enhance the room to manoeuvre together. In addition, strong entrepreneurial agency functions as a locomotive for other firms which are important trigger points, and pushes the process forward. These two forms of agency need to be interrelated to constitute new paths.  相似文献   
8.
In this study, we propose a method based on life tables currently used in population dynamics and ecology to compare the mortality curves of Equidae from anthropic and carnivore fossil assemblages with those from modern populations. The combined analysis of frequency (fx) with various ecological parameters such as mortality rate (qx), survival rate (lx), fecundity rate (mx), and killing factor (kx), established for each age class, allows us to characterize the stability of fossil populations. These ecological parameters, developed in demography, correspond to many curves and constitute a complementary approach to interpret the two main mortality models, attritional and catastrophic, often evoked in zooarchaeology. The age structures of fossil horses from the anthropic sites of Bau de l'Aubesier (Vaucluse, France) and Combe-Grenal (Dordogne, France) and the hyena den of Fouvent (Haute-Saône, France) are compared to typical catastrophic modern populations of Equidae from the National Park of Akagera (Rwanda). We also used data collected by the Bureau of Land Management for present day feral horses from Pryor Mountain (Montana, USA) which constitutes a reliable referential of a stable living population. The characterization of age structures in those different contexts is discussed as well as the impact of Neanderthals and hyenas on fossil assemblages.  相似文献   
9.
10.
The aim of this proposal is to present an original approach to the study and preservation of rock art caves. A multidisciplinary study of cave wall alteration will be performed to understand the impact of environmental context on the evolution of wall surfaces. The approach involves the choice of a cave with characteristics similar to painted caves in the studied area (Vézère Valley in Dordogne, France): e.g., cave wall alteration, lithology, morphology, etc. This selected cave is intended to become a laboratory cave, monitored for the acquisition of chemical, physical and biological environmental data on bedrock, air and fluids along with their characteristics. A cave without art or archaeological interest has been chosen specifically to conduct experiments, to make in situ analysis and to obtain samples. The results are to be completed by specific observations in several other caves and compiled in a database.  相似文献   
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