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   98946篇
  免费   3014篇
  国内免费   18篇
管理学   13250篇
民族学   609篇
人才学   25篇
人口学   8156篇
丛书文集   640篇
教育普及   3篇
理论方法论   9913篇
现状及发展   1篇
综合类   2880篇
社会学   47178篇
统计学   19323篇
  2023年   518篇
  2021年   597篇
  2020年   1564篇
  2019年   2241篇
  2018年   2309篇
  2017年   3396篇
  2016年   2561篇
  2015年   2088篇
  2014年   2693篇
  2013年   19062篇
  2012年   2902篇
  2011年   2768篇
  2010年   2317篇
  2009年   2380篇
  2008年   2471篇
  2007年   2307篇
  2006年   2433篇
  2005年   2587篇
  2004年   2379篇
  2003年   2093篇
  2002年   2200篇
  2001年   2262篇
  2000年   2026篇
  1999年   1899篇
  1998年   1619篇
  1997年   1460篇
  1996年   1432篇
  1995年   1451篇
  1994年   1407篇
  1993年   1383篇
  1992年   1444篇
  1991年   1385篇
  1990年   1359篇
  1989年   1194篇
  1988年   1263篇
  1987年   1128篇
  1986年   1047篇
  1985年   1215篇
  1984年   1256篇
  1983年   1126篇
  1982年   1020篇
  1981年   930篇
  1980年   872篇
  1979年   960篇
  1978年   835篇
  1977年   762篇
  1976年   703篇
  1975年   688篇
  1974年   579篇
  1973年   487篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
151.
152.
The hypothesis that irritability and contingency detection are negatively correlated was examined in thirty‐one 6‐month‐old infants. Observation and maternal report‐based assessments of irritability were correlated with both a criterion score and a continuous score of contingency detection. Results indicated that greater irritability in infants was associated with lower contingency detection scores. Discussion focuses on identifying processes by which the 2 constructs may be associated.  相似文献   
153.
Editorial     
Ohne Zusammenfassung
Editorial
  相似文献   
154.
155.
156.
The construct, family resilience, has been defined and applied very differently by those who are primarily clinical practitioners and those who are primarily researchers in the family field. In thisarticle, the family resilience perspective is integrated with conceptual definitions from family stress theory using the Family Adjustment and Adaptation Response (FAAR) Model in an effort to clarify distinctions between family resiliency as capacity and family resilience as a process. The family resilience process is discussed in terms of (a) the meaning of significant risk exposure (vs. the normal challenges of family life) and (b) the importance of making conceptual and operational distinctions between family system outcomes and family protective processes. Recommendations for future family resilience research are discussed.  相似文献   
157.
Recent research has demonstrated that Democrats and Republicansare divided along religious lines–98) confirm that thelink between religiosity and Republican Party identificationis stronger among younger than older voters.  相似文献   
158.
159.
Over the years, noteworthy social workers have been interviewed for the Clinical Social Work Journal. This article features an interview with Joyce Edward who is recognized for her many extraordinary contributions to clinical social work. Joyce has co-written or co-edited three exceptional books for the social work clinician, she has been an esteemed teacher and a vocal activist for quality mental health care. In this interview Joyce reflects on family influences, her work as a social caseworker, the psychoanalytic luminaries with whom she trained, her concerns about the clinical education of today's social work students, and finally, her perspective on managed mental health care.  相似文献   
160.
We study experimentally a standard four-player Hotelling location game with a uniform density of consumers and inelastic demand. The pure strategy Nash equilibrium configuration consists of two firms located at one quarter of the "linear city," and the other two at three quarters. We do not observe convergence to such an equilibrium. In our experimental data we find three clusters. Besides the direct proximity of the two equilibrium locations, this concerns the focal midpoint. Moreover, we observe that whereas this midpoint appears to become more notable over time, other focal points fade away. We explain how these observations are related to best-response dynamics, and to the fact that the players rely on best-responses in particular when they are close to the equilibrium configuration.  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