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   25656篇
  免费   756篇
  国内免费   216篇
管理学   576篇
劳动科学   5篇
民族学   551篇
人才学   6篇
人口学   469篇
丛书文集   3040篇
理论方法论   1101篇
综合类   19218篇
社会学   1440篇
统计学   222篇
  2024年   72篇
  2023年   169篇
  2022年   203篇
  2021年   256篇
  2020年   341篇
  2019年   330篇
  2018年   262篇
  2017年   323篇
  2016年   390篇
  2015年   434篇
  2014年   1068篇
  2013年   1358篇
  2012年   1388篇
  2011年   1738篇
  2010年   1555篇
  2009年   1710篇
  2008年   1626篇
  2007年   1843篇
  2006年   2011篇
  2005年   2007篇
  2004年   1884篇
  2003年   1786篇
  2002年   1433篇
  2001年   1261篇
  2000年   675篇
  1999年   195篇
  1998年   79篇
  1997年   61篇
  1996年   66篇
  1995年   36篇
  1994年   19篇
  1993年   17篇
  1992年   11篇
  1991年   3篇
  1990年   2篇
  1989年   8篇
  1988年   5篇
  1987年   3篇
排序方式: 共有10000条查询结果,搜索用时 12 毫秒
31.
The Lake Pontchartrain Basin in southeast Louisiana is an estuarine watershed encompassing New Orleans, Baton Rouge, and wetlands that are an integral part of Louisiana's unique culture. In recent decades rapid growth and poorly planned development have resulted in a decrease in water quality and habitat loss, especially in St. Tammany Parish on the north shore of Lake Pontchartrain. In 1989, the Lake Pontchartrain Basin Foundation (LPBF), an environmental, non-profit organization, was formed to address and rectify environmental issues in the Basin. LPBF accomplishes its mission through programs addressing water quality, habitat protection, geographic information science, public access, and education.LPBF used the recent, rapid development occurring in St. Tammany Parish as a case study to examine the relationship between land use, water quality, and development in the Basin by investigating habitat change/urbanization, development in flood plains, and water quality. Through the integration of LPBF programs, it was found that urbanization is having a devastating impact on the parish's natural habitats and severely degrading water quality. Using these results, LPBF is educating Basin citizens on the protection of their habitats and water quality to insure that these resources may be available for future generations.  相似文献   
32.
针对目前中学课堂纪律存在问题进行分析,并提出重建策略:社会要营造和谐的环境,学校要在新课程背景下实现工具性纪律向发展性纪律的转变,教师要树立正确的学生观与纪律哲学观,正确的认识教师权威和学生自主,并通过对话处理好教师权威与学生自主的关系。  相似文献   
33.
政治资源:政治发展的内在基石   总被引:1,自引:0,他引:1  
政治资源是政治现代化启动和推进的前提和基础;政治发展不仅是一个消耗政治资源的过程,更是一个政治资源配置的过程;政治资源的配置影响政治稳定,往往形成不同的政治形态。中国政治发展的不同阶段需要采取与之相适应的政治资源配置方式。  相似文献   
34.
家族企业未来发展趋势的理论探析   总被引:1,自引:0,他引:1  
家族企业由注重情感的家族和追求业绩的企业组成,它必定与其他企业存在差异.在对克林·盖尔西克等人相关理论研究的基础上,提出了新三环模式和新三极发展模式,并以此作为分析工具对家族企业发展演变过程进行全面、系统的理论探析,认为家族企业的未来发展必然走向泛家族化或社会化、公众化.  相似文献   
35.
可持续旅游扶贫开发模式研究——社区参与乡村旅游   总被引:3,自引:0,他引:3  
在对乡村旅游、旅游扶贫和社区参与旅游发展相关概念内涵及研究进展阐述的基础上,着重分析了贫困乡村社区参与旅游发展的必要性和主要障碍,提出社区参与乡村旅游的一些思路,即发挥政府的主导作用,通过政策调控保障社区参与的主体地位,通过科学合理的利益分配政策框架确立社区居民参与的激励机制,提高社区居民的相关旅游知识及进行相关能力培训,提高非政府组织在旅游发展中的作用等。  相似文献   
36.
Previous research concerned with children's belief-desire psychology has examined the capacity to predict or interpret action on the basis of the implicit proposition that ‘when an actor desires a particular end and believes that a particular action will achieve that end, he or she will undertake that action’. The limitations of this formulation for understanding acts of omission are outlined and an elaborated version of belief-desire psychology introduced. This version holds that ‘when an actor desires a particular end and believes that a particular action will achieve that end, and when it is believed that there are no co-occurring outcomes of that action whose avoidance is desired more highly than is the originally conceived end, then the actor will undertake the action which will satisfy the original desire’. An experiment is reported which examines 4-, 5, and 7-year-olds' ability to predict story characters' actions on the basis of either their true or false beliefs concerning undesirable outcomes associated with the pursuit of a desired end. Children of all age-groups provided evidence of understanding the elaborated version of belief-desire psychology. However, a significant improvement was noted between the ages of 4 and 7 years in the ability to understand circumstances involving false beliefs.  相似文献   
37.
教育是人力资源开发的主导形式,高校办学定位直接影响着人才培养的类型和规格。适应科学技术的发展和社会经济增长方式的转变,高校办学定位必须与时俱进,不断调整和革新。在当前和今后相当长一段时间,高师院校必须走“以师为本、综合发展”之路。  相似文献   
38.
A training project in a northern Canadian community providedan opportunity to examine participatory planning approachesand the meaning of work in First Nations communities. Focusgroups conducted three years after the unsuccessful interventionof a community economic development (CED) project suggest thatcomplex factors such as lack of support from community leadersand rate of pay for workers determine whether CED is alwaysappropriate in northern, First Nations contexts.  相似文献   
39.
Many thousands of people in developing country cities depend on recycling materials from waste for their livelihoods. With the focus of the Millennium Development Goals on poverty reduction, and of waste strategies on improving recycling rates, one of the major challenges in solid waste management in developing countries is how best to work with this informal sector to improve their livelihoods, working conditions and efficiency in recycling.The general characteristics of informal recycling are reviewed, highlighting both positive and negative aspects. Despite the health and social problems associated with informal recycling, it provides significant economic benefits that need to be retained. Experience shows that it can be highly counterproductive to establish new formal waste recycling systems without taking into account informal systems that already exist. The preferred option is to integrate the informal sector into waste management planning, building on their practices and experience, while working to improve efficiency and the living and working conditions of those involved. Issues associated with integrating informal recycling into the formal waste management sector are discussed.  相似文献   
40.
我国经济运行的态势良好,但存在的问题也不少。其中,投资盲目扩张的冲动较强是个主要矛盾。投资 受预期的影响,非理性预期是投资盲目扩张的一个充分必要条件。将科学发展观引入理性预期的概念之中,能够 提高投资决策和投资行为的科学性。建立健全正式的和非正式的制度安排,发展科学教育事业和提高全民的文化 素质,有利于形成信息的充分性和对称性。  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