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   93946篇
  免费   2955篇
  国内免费   5篇
管理学   12835篇
民族学   549篇
人才学   25篇
人口学   7536篇
丛书文集   537篇
教育普及   2篇
理论方法论   9599篇
现状及发展   1篇
综合类   2226篇
社会学   44465篇
统计学   19131篇
  2023年   509篇
  2021年   574篇
  2020年   1527篇
  2019年   2224篇
  2018年   2170篇
  2017年   3243篇
  2016年   2454篇
  2015年   2075篇
  2014年   2650篇
  2013年   18929篇
  2012年   2544篇
  2011年   2359篇
  2010年   2054篇
  2009年   2230篇
  2008年   2139篇
  2007年   1970篇
  2006年   2197篇
  2005年   2365篇
  2004年   2209篇
  2003年   1960篇
  2002年   2061篇
  2001年   2136篇
  2000年   1929篇
  1999年   1789篇
  1998年   1543篇
  1997年   1419篇
  1996年   1378篇
  1995年   1379篇
  1994年   1349篇
  1993年   1358篇
  1992年   1367篇
  1991年   1304篇
  1990年   1264篇
  1989年   1135篇
  1988年   1214篇
  1987年   1075篇
  1986年   980篇
  1985年   1147篇
  1984年   1215篇
  1983年   1087篇
  1982年   1002篇
  1981年   889篇
  1980年   852篇
  1979年   930篇
  1978年   815篇
  1977年   734篇
  1976年   682篇
  1975年   666篇
  1974年   553篇
  1973年   470篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
EXAMINING THE WAGE DIFFERENTIAL FOR MARRIED AND COHABITING MEN   总被引:3,自引:0,他引:3  
Wage analyses indicate that married and cohabiting men earn more than do single, noncohabiting men. This article examines the nature of these wage differentials using data from the National Survey of Families and Households. Results indicate that the marital and cohabitation differentials are quite distinct. The higher wage observed for cohabiting men is driven primarily by selection and is eliminated by first differencing, but the higher wage observed for married men (and perhaps long-term cohabiters) arises largely because of differential wage growth. Wages appear to rise more rapidly following marriage.  相似文献   
142.
In the first three sections of this paper we present a set of axioms which provide a characterization of an extension of the Banzhaf index to voting games with r alternatives, such as the United Nations Security Council where a nation can vote “yes”, “no”, or “abstain”. The fourth section presents a set of axioms which characterizes a power index based on winning sets instead of pivot sets. Received: 4 April 2000/Accepted: 30 April 2001  相似文献   
143.
144.
Much of the analysis of refugee and immigrant adaptation has stressed the interaction of prior experience with the requirements of life in a new country. For refugees, that interaction has often been jarring because of the after‐effects of their flight and their relative inability to prepare for a new life in a new country. Yet refugees have often done rather well in economic terms in that new country. The reasons for that relative success have been phrased in cultural terms (e.g., the predisposition toward education) and in general socioeconomic terms (e.g., refugees as educated and skilled). This article examines a set of factors that lie between these customary cultural and socioeconomic categories. Specifically, the paper examines key features of household formation among Vietnamese refugees. An examination of historical data from southern Vietnam indicates patterns in household formation that appear durable over time yet are not shared across the breadth of Vietnam and cannot thus be viewed as “cultural” in the usual sense. A comparison of the historical data with recent national survey data on refugees in the United States indicates that these patterns continue among Vietnamese refugees and are ‐ as compared to other refugees ‐ distinctive to them. These patterns of household formation provide Vietnamese refugees with important options in adaptation to a new country.  相似文献   
145.
Concurrent and longitudinal associations between peer crowd affiliation and internalized distress were examined in a sample of 246 youth (148 girls, 98 boys). Children completed measures of depression, social anxiety, loneliness, and self‐esteem when they were in grades 4 to 6 (Time 1), and again 6 years later during adolescence (grades 10 – 12; Time 2). At Time 2, adolescents also reported their self‐concept and their identification with reputation‐based peer crowds, including Populars, Jocks, Brains, Burnouts, Non‐Conformists, and None/Average crowds. Results indicated that adolescents' report of peer crowd affiliation was concurrently associated with self‐concept and levels of internalizing distress. Follow‐back analyses of internalizing trajectories revealed that Populars/Jocks had experienced significant declines in internalizing distress across development, whereas Brains exhibited some increases in internalizing distress between childhood and adolescence.  相似文献   
146.
147.
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   
148.
Editorial     
Ohne Zusammenfassung
Editorial
  相似文献   
149.
150.
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