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   378篇
  免费   29篇
管理学   44篇
民族学   4篇
人口学   61篇
丛书文集   7篇
理论方法论   53篇
综合类   2篇
社会学   215篇
统计学   21篇
  2021年   3篇
  2020年   5篇
  2019年   13篇
  2018年   12篇
  2017年   21篇
  2016年   16篇
  2015年   10篇
  2014年   13篇
  2013年   42篇
  2012年   14篇
  2011年   11篇
  2010年   8篇
  2009年   10篇
  2008年   6篇
  2007年   13篇
  2006年   5篇
  2005年   13篇
  2004年   14篇
  2003年   15篇
  2002年   3篇
  2001年   13篇
  2000年   9篇
  1999年   6篇
  1998年   6篇
  1997年   6篇
  1996年   7篇
  1994年   4篇
  1993年   8篇
  1992年   11篇
  1991年   6篇
  1990年   5篇
  1989年   3篇
  1988年   8篇
  1987年   4篇
  1986年   3篇
  1985年   6篇
  1983年   4篇
  1981年   3篇
  1980年   5篇
  1979年   9篇
  1978年   4篇
  1976年   2篇
  1975年   2篇
  1972年   3篇
  1971年   2篇
  1969年   2篇
  1968年   3篇
  1965年   2篇
  1964年   3篇
  1961年   2篇
排序方式: 共有407条查询结果,搜索用时 93 毫秒
91.
Politics often explains where development assistance has been effective and where it has not. Yet, until the 2000s there has been little focus by development agencies on political issues. This has recently begun to change with political‐economy analysis (PEA) now being more systematically used by development agencies to understand the real world. Nigeria and Bangladesh are two positive examples. Much remains to be done in these countries and more widely, to ensure stronger uptake of PEA. On the supply side this includes getting the ‘product’ right, and better communicating the message. On the demand side, there is a need to take more account of the incentives facing development agencies and to gather more systematic evidence on the operational impact of PEA to date.  相似文献   
92.
Twenty years ago, the National Institute of Child Health and Human Development (NICHD) issued a request for proposals that resulted in the National Survey of Families and Households (NSFH), a unique survey valuable to a wide range of family scholars. This paper describes the efforts of an interdisciplinary group of family demographers to build on the progress enabled by the NSFH and many other theoretical and methodological innovations. Our work, also supported by NICHD, will develop plans for research and data collection to address the central question of what causes family change and variation. We outline the group's initial assessments of orienting frameworks, key aspects of family life to study, and theoretical and methodological challenges for research on family change. Finally, we invite family scholars to follow our progress and to help develop this shared public good.  相似文献   
93.
94.
95.
96.
One aspect of the utility of gambling may evidence itself in failures of idempotence, i.e., when all chance outcomes give rise to the same consequence the `gamble' may not be indifferent to its common consequence. Under the assumption of segregation, such gambles can be expressed as the joint receipt of the common consequence and what we call `an element of chance', namely, the same gamble with the common consequence replaced by the status quo. Generalizing, any gamble is indifferent to the joint receipt of its element of chance and a certain consequence, which is called the `kernel equivalent' of the gamble. Under idempotence, the kernel equivalent equals the certainty equivalent. Conditions are reported (Theorem 4) that are sufficient for the kernel equivalents to have the kind of utility representation first discussed by Luce and Fishburn (1991), including being idempotent. This utility representation of the kernel equivalents together with the derived form of utility over joint receipts yields a utility representation of the original structure. Possible forms for the utility of an element of chance are developed.  相似文献   
97.
98.
99.
100.
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