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   994篇
  免费   60篇
  2023年   11篇
  2022年   7篇
  2021年   4篇
  2020年   25篇
  2019年   48篇
  2018年   53篇
  2017年   72篇
  2016年   66篇
  2015年   42篇
  2014年   32篇
  2013年   233篇
  2012年   45篇
  2011年   48篇
  2010年   45篇
  2009年   37篇
  2008年   28篇
  2007年   19篇
  2006年   27篇
  2005年   17篇
  2004年   17篇
  2003年   11篇
  2002年   18篇
  2001年   17篇
  2000年   10篇
  1999年   17篇
  1998年   6篇
  1997年   11篇
  1996年   10篇
  1995年   13篇
  1994年   4篇
  1993年   5篇
  1992年   5篇
  1991年   2篇
  1990年   3篇
  1989年   3篇
  1988年   3篇
  1986年   2篇
  1985年   2篇
  1983年   3篇
  1982年   2篇
  1980年   3篇
  1979年   4篇
  1978年   2篇
  1976年   3篇
  1972年   4篇
  1971年   3篇
  1970年   2篇
  1969年   2篇
  1965年   1篇
  1950年   1篇
排序方式: 共有1054条查询结果,搜索用时 15 毫秒
101.
William M. Epstein, Welfare in America : How Social Science Fails the Poor.
Herbert J. Gans, The War Against the Poor : The Underclass and Antipoverty Policy
Joel F. Handler, The Poverty of Welfare Reform  相似文献   
102.
103.
104.
My essay focuses on the relation between consciousness and reality. I argue, following Georg Cantor, that consciousness is a potential infinite driven by care to invest itself in the world historically. As human beings develop an authentic sense of self they are driven by good faith to postulate an Absolute infinite, which, following Spinoza, we may call God. Thus God, as the Absolute infinite, constitutes our reality, which I characterize as implicate information explicating itself through time. To live authentically is to recognize the nature of God and commit to Him through faith. Faith means to understand one’s self as a potentially infinite consciousness attempting to authentically participate in, and understand, the Absolute of God.  相似文献   
105.
106.
This commentary will coalesce around two main points. First, the articles by Markus Hesse on urban geography, by Annika Mattissek and Georg Glasze on recent developments in discourse-analytic approaches, and by Ulrich Best on the genealogy of radical–Marxist or critical German-language geography all support the contention that key features of Germanophone human geography still mark it out as a ‘Cold War’ human geography. As will become clear, this contention goes well beyond noting the marginality (until recently) of radical–Marxist positions (Belina, B., Best, U., & Naumann, M. (2009). Critical geography in Germany: From exclusion to inclusion via internationalization. Social Geography, 4, 47–58). Second, I will argue that although this configuration has had real costs, including both analytic and ‘civic’ deficits, it has also allowed the development of distinctive strengths and innovative emphases in human geographic research that can and should be engaged by other sub-communities in the international discourse.  相似文献   
107.
Historical park visitation and weather data, taken at the daily time scale from 2000 to 2009 for Pinery Provincial Park in southern Ontario (Canada), were analysed as an objective measure of the weather sensitivity, temperature thresholds, and potential impacts of projected climate change for park visitation. Three seasonal weather-visitation models were constructed using multivariable linear regression (peak, shoulder, off-season). To account for both natural and institutional seasonality, the weather-visitation models included both climatic (temperature, precipitation) and social (weekends, holidays) variables, which demonstrated equably comparable effects on visitation across the three models. Critical temperature thresholds were identified for each season using one-way analysis of variance to determine the range of temperatures within which the threshold was evident; the specific degree of temperature associated with the threshold was identified within the seasonal regression models. Temperatures over 33 °C during the peak season and over 29 °C during the shoulder season indicated critical thresholds at which point conditions that were ‘too hot’ for some caused a decline in visitation. Furthermore, temperatures below 11 °C indicated another critical threshold, where conditions were ‘too cold’ for most and therefore park visitation was less sensitive to temperature variability below this threshold. A partial sensitivity analysis for the impact of a warmer, wetter climate on park visitation was conducted, illustrating the effect of a 1 °C to 5 °C warming in maximum temperatures, coupled with a 5% to 15% increase in total precipitation. In response to projected climate change, the weather-visitation models suggested that for each additional degree of warming experienced, despite the negative effects of increasing precipitation and more frequent heat extremes, annual park visitation could increase by 3.1%, annually. The projected increase in park visitation as a result of rising temperatures was mainly associated with shoulder season visitation, with only minor increases in peak season visitation.  相似文献   
108.
109.
The analysis presented in this paper explores the similarities and differences between the services selected as priorities for funding by the Baltimore Ryan White CARE Act Title I Planning Council during the first 2 years of the program in this metropolitan area, and services perceived by HIV/AIDS service providers and people living with HIV/AIDS to be unmet needs. The data used for these analyses were collected as part of a study to assess the implementation and impact of the CARE Act legislation in the Baltimore eligible metropolitan area( EMS ). This project includes three interrelated components: (a) a case study of the legislatively mandated Planning Council, (b) a survey of providers representing HIV/AIDS service organizations, and (c) a qualitative field study of the perceptions of people living with HIV/AIDS about the service delivery system. Taken together, the data from these three sources describe the similarities and differences among these three groups involved in HIV/AIDS care in Baltimore, in terms of their perceptions of services needed by people living with HIV / AIDS. The conclusions drawn from this study can be used to strengthen needs assessments in Title I-EMAs throughout the United States.  相似文献   
110.
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