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   93393篇
  免费   2965篇
  国内免费   5篇
管理学   12848篇
民族学   550篇
人才学   26篇
人口学   7366篇
丛书文集   536篇
教育普及   2篇
理论方法论   9609篇
现状及发展   1篇
综合类   2193篇
社会学   44119篇
统计学   19113篇
  2023年   518篇
  2021年   577篇
  2020年   1525篇
  2019年   2223篇
  2018年   2151篇
  2017年   3229篇
  2016年   2454篇
  2015年   2075篇
  2014年   2658篇
  2013年   19022篇
  2012年   2496篇
  2011年   2318篇
  2010年   2033篇
  2009年   2234篇
  2008年   2116篇
  2007年   1935篇
  2006年   2192篇
  2005年   2371篇
  2004年   2229篇
  2003年   1979篇
  2002年   2083篇
  2001年   2115篇
  2000年   1908篇
  1999年   1784篇
  1998年   1546篇
  1997年   1418篇
  1996年   1376篇
  1995年   1369篇
  1994年   1345篇
  1993年   1343篇
  1992年   1346篇
  1991年   1281篇
  1990年   1251篇
  1989年   1105篇
  1988年   1189篇
  1987年   1052篇
  1986年   955篇
  1985年   1118篇
  1984年   1190篇
  1983年   1071篇
  1982年   991篇
  1981年   894篇
  1980年   832篇
  1979年   909篇
  1978年   795篇
  1977年   718篇
  1976年   672篇
  1975年   650篇
  1974年   542篇
  1973年   465篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
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   
132.
133.
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   
134.
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   
135.
136.
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   
137.
Editorial     
Ohne Zusammenfassung
Editorial
  相似文献   
138.
139.
140.
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