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   88492篇
  免费   2966篇
  国内免费   12篇
管理学   12115篇
劳动科学   1篇
民族学   554篇
人才学   26篇
人口学   6654篇
丛书文集   757篇
理论方法论   9270篇
综合类   2585篇
社会学   40762篇
统计学   18746篇
  2023年   511篇
  2021年   582篇
  2020年   1507篇
  2019年   2215篇
  2018年   2025篇
  2017年   3122篇
  2016年   2342篇
  2015年   2061篇
  2014年   2633篇
  2013年   18857篇
  2012年   2289篇
  2011年   2078篇
  2010年   1946篇
  2009年   2221篇
  2008年   2019篇
  2007年   1814篇
  2006年   2082篇
  2005年   2272篇
  2004年   2114篇
  2003年   1840篇
  2002年   1955篇
  2001年   1921篇
  2000年   1701篇
  1999年   1633篇
  1998年   1467篇
  1997年   1309篇
  1996年   1269篇
  1995年   1314篇
  1994年   1274篇
  1993年   1265篇
  1992年   1231篇
  1991年   1158篇
  1990年   1137篇
  1989年   971篇
  1988年   1065篇
  1987年   940篇
  1986年   834篇
  1985年   1009篇
  1984年   1089篇
  1983年   964篇
  1982年   907篇
  1981年   836篇
  1980年   785篇
  1979年   838篇
  1978年   752篇
  1977年   673篇
  1976年   636篇
  1975年   606篇
  1974年   496篇
  1973年   415篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
131.
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   
132.
Editorial     
Ohne Zusammenfassung
Editorial
  相似文献   
133.
134.
135.
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   
136.
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   
137.
138.
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   
139.
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   
140.
TOOLS OR TOYS? THE IMPACT OF HIGH TECHNOLOGY ON SCHOLARLY PRODUCTIVITY   总被引:1,自引:0,他引:1  
We examine the impact of communication technology on scholarly productivity by considering patterns of coauthored economics articles. Using articles in three major economics journals from 1970–79 and 1992–96, we find (1) sharp growth from distant coauthorships (authors not in the same metropolitan area prior to publication), as the theory predicts, and, contrary to theory, (2) lower productivity of distant than close-coauthored works and no decline in their relative disadvantage. These findings are reconciled by noting that high technology has aspects of a consumer good. The relative productivity of solo-authored articles has decreased, perhaps explaining the secular increase in coauthorship.  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