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   14130篇
  免费   436篇
  国内免费   4篇
管理学   2045篇
民族学   83篇
人才学   9篇
人口学   1192篇
丛书文集   76篇
理论方法论   1447篇
综合类   184篇
社会学   6847篇
统计学   2687篇
  2023年   85篇
  2021年   76篇
  2020年   225篇
  2019年   331篇
  2018年   358篇
  2017年   449篇
  2016年   377篇
  2015年   295篇
  2014年   337篇
  2013年   2463篇
  2012年   464篇
  2011年   439篇
  2010年   365篇
  2009年   312篇
  2008年   414篇
  2007年   440篇
  2006年   379篇
  2005年   374篇
  2004年   326篇
  2003年   294篇
  2002年   308篇
  2001年   290篇
  2000年   307篇
  1999年   265篇
  1998年   236篇
  1997年   228篇
  1996年   216篇
  1995年   190篇
  1994年   185篇
  1993年   211篇
  1992年   230篇
  1991年   184篇
  1990年   183篇
  1989年   160篇
  1988年   169篇
  1987年   158篇
  1986年   141篇
  1985年   140篇
  1984年   180篇
  1983年   153篇
  1982年   148篇
  1981年   108篇
  1980年   142篇
  1979年   148篇
  1978年   103篇
  1977年   113篇
  1976年   111篇
  1975年   109篇
  1974年   101篇
  1973年   73篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
931.
One of Super's most important contributions has been in explicating those developmental tasks that involve planning, exploring, and deciding, processes known collectively as readiness for career choices. The authors review existing means of conceptualizing and operationalizing the various aspects of readiness, as well as innovative practice applications that have emerged from this work. Next, selected elaborations and extensions of the readiness construct are described. Finally, future directions for theory and research on readiness are presented with a particular emphasis on the promise of considering contextual issues, motivational factors, and an expanded measurement perspective in subsequent inquiry and practice.  相似文献   
932.
Summary. The paper presents a general strategy for selecting the bandwidth of nonparametric regression estimators and specializes it to local linear regression smoothers. The procedure requires the sample to be divided into a training sample and a testing sample. Using the training sample we first compute a family of regression smoothers indexed by their bandwidths. Next we select the bandwidth by minimizing the empirical quadratic prediction error on the testing sample. The resulting bandwidth satisfies a finite sample oracle inequality which holds for all bounded regression functions. This permits asymptotically optimal estimation for nearly any regression function. The practical performance of the method is illustrated by a simulation study which shows good finite sample behaviour of our method compared with other bandwidth selection procedures.  相似文献   
933.
934.
935.
936.
937.
938.
The Doldrums     
Journal of Population Research -  相似文献   
939.
This paper is based on a study of 576 lottery winners from 12 states. Respondents to a mailed questionnaire included winners of sums ranging from $50,000 to millions. The data indicate that popular myths and stereotypes about winners were inaccurate. Specifically, winners came from various education and employment backgrounds and they were clustered in the higher income categories than the general population indicating that lotteries might not be as regressive as popularly believed. Winners were older than the general population and more often male (60 versus 40%). There was significant association between the amount a person won and his or her work behavior. Individuals with psychologically and financially rewarding jobs continued working regardless of the amount they won, while people who worked in low paying semi-skilled and unskilled jobs were far more likely to quit the labor force. Contrary to popular beliefs, winners did not engage in lavish spending sprees and instead gave large amounts of their winnings to their children and their churches. The most common expenditures were for houses, automobiles and trips. It was found that overall, winners were well-adjusterd, secure and generally happy from the experience.This study was funded by a grant from the Institute for Socioeconomic Studies in White Plains, New York.  相似文献   
940.
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