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   93023篇
  免费   3052篇
  国内免费   3篇
管理学   12907篇
民族学   560篇
人才学   26篇
人口学   7295篇
丛书文集   532篇
教育普及   1篇
理论方法论   9665篇
综合类   2179篇
社会学   43618篇
统计学   19295篇
  2023年   533篇
  2021年   594篇
  2020年   1558篇
  2019年   2306篇
  2018年   2228篇
  2017年   3324篇
  2016年   2494篇
  2015年   2118篇
  2014年   2724篇
  2013年   19282篇
  2012年   2531篇
  2011年   2324篇
  2010年   2080篇
  2009年   2265篇
  2008年   2135篇
  2007年   1970篇
  2006年   2213篇
  2005年   2346篇
  2004年   2231篇
  2003年   1952篇
  2002年   2081篇
  2001年   2032篇
  2000年   1815篇
  1999年   1711篇
  1998年   1518篇
  1997年   1367篇
  1996年   1329篇
  1995年   1353篇
  1994年   1311篇
  1993年   1301篇
  1992年   1304篇
  1991年   1215篇
  1990年   1183篇
  1989年   1051篇
  1988年   1123篇
  1987年   997篇
  1986年   912篇
  1985年   1075篇
  1984年   1153篇
  1983年   1031篇
  1982年   945篇
  1981年   874篇
  1980年   836篇
  1979年   887篇
  1978年   792篇
  1977年   704篇
  1976年   679篇
  1975年   662篇
  1974年   527篇
  1973年   444篇
排序方式: 共有10000条查询结果,搜索用时 578 毫秒
341.
342.
343.
A number of researchers have recently challenged the long-held notion among criminologists that rape, along with most other violent crimes, is an intraracial crime. Based on analysis of survey data they concluded that black rapists “prefer” or “seek out” white victims and that the likelihood of a black offender selecting a white victim has been increasing during recent years. Data presented here (1977–88 National Crime Surveys) refute the notion that black rapists “prefer” white victims. Moreover these same data fail to support the contention that rapes involving black offenders and white victims have been increasing. According to National Crime Survey estimates, the proportion of black offenders that victimize whites has been declining. An earlier version of this paper was presented at the annual meetings of the American Society of Criminology, November 1991.  相似文献   
344.
This article examines whether asking the vote question beforeparty identification alters the strength of partisanship andits relationship to vote choice. It employs the 1992 BritishElection Survey, which included a random split half-sample experiment,and the 1992–93 American Election Study Panel, where thequestion order for party identification and the vote were changed.The results show that altering the question ordering had verylittle effect in Britain and no significant effect in the UnitedStates. These results are consistent with the notion that partyidentification is one of the more enduring and stable componentsof mass political behavior in both presidential and parliamentarysystems.  相似文献   
345.
346.
We consider the assessment of outliers and influential observation in non-linear measurement error models. Residuals, leverage measures and case-deletiondiagonostics are examined. The method of local influence is also applied to the models. In particular, the perturbation of measurement error variances has been found useful in assessing the adequancy of the model assumptions. A numerical example is given to illustrate the application of the diagonostics.  相似文献   
347.
Twelve problem poker machine players and thirteen horse race gamblers (20 males and 5 females; age range 28–69) completed a series of questionnaires which assessed levels of anxiety, their preferred state of arousal and their motivations to gamble. As predicted, problem poker machine gamblers were found to be more anxious and reported avoiding arousal more frequently than the horse race gamblers. Alternately, problem horse race gamblers were found to prefer heightened levels of arousal and appeared to gamble to achieve these optimal levels of arousal. However, there was no difference between the groups on proneness to boredom. The present results provide evidence which is consistent with the Reversal theory and its application to the field of problem gambling.  相似文献   
348.
Conclusion Data systems created with one purpose inevitably have shortcomings when used for other purposes, so it is not surprising that a database compiled from informational tax returns has serious flaws when used to compile a statistical picture of the non-profit sector. The two-digit NTEE level of aggregation that is published in theAlmanac conceals many problems that appear when the IRS-based data are broken down to the three-digit level.Identification of the problems in the NTEE and in the use of the IRS data is a necessary step toward their correction. At this point, it is clear that the IRS-based numbers in theAlmanac should be regarded, at best, as rough approximations and as a starting point for additional work. My assessment of theAlmanac suggests that, at least as far as health care is concerned, the NTEE needs revision. Correcting the problems with the IRS data will be much, much more difficult.I am grateful for assistance from Steve Noga, Chris Toppe and Virginia Hodgkinson at Independent Sector.  相似文献   
349.
The theory of family paradigms provides an integrative framework for under-standing and systematizing the diverse ways that families organize and make sense of family life. Using formal methods of analysis based on logical and geometrical arguments, the priecise implications of models of family types can be investigated and compared. The paradigmatic framework can thus be refined and extended to form a more rigorous theoretical grounding for family typologies is explored and a miltidimensional model is derived the geometry of which is equivalent to, but more succinctly captures, the underlying structure of uariation in family para-digms. In Part II, the resulting model is interpredtd and explored in terms of implications for family theory, theory construction, and family therapy. Clarifying the basic dimensions of the paradigmatic framework also permits more precise exploration of interrelationships among related models of family types, which can be understood as reduced models derivable from the complete geometry of the paradigmatic framework.  相似文献   
350.
The CASMIN project and the American dream   总被引:1,自引:0,他引:1  
  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