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   3810篇
  免费   93篇
  2020年   50篇
  2019年   55篇
  2018年   55篇
  2017年   80篇
  2016年   76篇
  2015年   56篇
  2014年   69篇
  2013年   1275篇
  2012年   70篇
  2011年   90篇
  2010年   67篇
  2009年   61篇
  2008年   61篇
  2007年   57篇
  2006年   47篇
  2005年   42篇
  2004年   45篇
  2003年   44篇
  2002年   33篇
  2001年   44篇
  2000年   52篇
  1999年   84篇
  1998年   56篇
  1997年   41篇
  1996年   41篇
  1995年   31篇
  1994年   39篇
  1993年   36篇
  1992年   31篇
  1990年   38篇
  1989年   36篇
  1988年   29篇
  1987年   43篇
  1986年   34篇
  1985年   43篇
  1984年   48篇
  1983年   57篇
  1982年   49篇
  1981年   35篇
  1980年   61篇
  1979年   44篇
  1978年   45篇
  1977年   52篇
  1976年   41篇
  1975年   49篇
  1974年   39篇
  1973年   26篇
  1970年   35篇
  1969年   27篇
  1967年   27篇
排序方式: 共有3903条查询结果,搜索用时 31 毫秒
81.
82.
83.
84.
85.
The paper examines the applicability of spatial representation ideas to the determination of equilibrium solutions for multiregion disease models. In particular, alternatives to the standard specification of regionally variable infectivity rates are devised and their impact on the space-time behavior of a carrier model for Hodgkin's disease is assessed using data for Greater Manchester.  相似文献   
86.
Most of the conventional approaches to the central facility location problem neglect the interaction of analyst and decision-maker during the locational choice process. This paper presents a new interactive approach to the central facility location problem. It is assumed that the problem is formulated by an analyst as a multiobjective optimization problem. Then the decision-maker searches for a satisfactory solution working directly with the computer system. The interactive procedure was implemented on IBM-PC XT/AT as the decision support system DINAS (Dynamic Interactive Network Analysis System) which enables the solution of various multiobjective location-allocation problems. DINAS has been successfully used for solving a real-world planning problem, namely for finding locations for pediatric hospitals in the Warsaw region.  相似文献   
87.
88.
"This paper questions the plausibility of the assumption of interregional equilibrium in recent research into migration and the valuation of amenities in the United States. It is shown that it is difficult to develop a satisfactory explanation for continuing net migration which is compatible with the equilibrium assumption, and that recent relevant research generally fails to support the idea that the U.S. economy is in equilibrium. The association of higher rent levels with in-migration is explained as a short-run phenomenon. If the spatial economy is in disequilibrium, then the valuations of amenities assuming equilibrium will be biased, being probably too low in areas of net in-migration and too high in areas of net out-migration."  相似文献   
89.
90.
Rural, remote, northern, and Indigenous communities on Turtle Island are routinely—as Cree Elder Willie Ermine says—pathologized. Social science and health scholarship, including scholarship by geographers, often constructs Indigenous human and physical geographies as unhealthy, diseased, vulnerable, and undergoing extraction. These constructions are not inaccurate: peoples and places beyond urban metropoles on Turtle Island live with higher burdens of poor health; Indigenous peoples face systemic violence and racism in colonial landscapes; rural, remote, northern, and Indigenous geographies are sites of industrial incursions; and many rural and remote geographies remain challenging for diverse Indigenous peoples. What, however, are the consequences of imagining and constructing people and places as “sick”? Constructions of “sick” geographies fulfill and extend settler (often European white) colonial narratives about othered geographies. Rural, remote, northern, and Indigenous geographies are discursively “mined” for narratives of sickness. This mining upholds a sense of health and wellness in southern, urban, Euro‐white‐settler imaginations. Drawing from multi‐year, relationship‐based, cross‐disciplinary qualitative community‐informed experiences, and anchored in feminist, anti‐colonial, and anti‐racist methodologies that guided creative and humanities‐informed stories, this paper concludes with different stories. It unsettles settler‐colonial powers reliant on constructing narratives about sickness in others and consequently reframes conversations about Indigenous well‐being and the environment.  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