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   18486篇
  免费   227篇
  国内免费   24篇
教育   12496篇
科学研究   2090篇
各国文化   419篇
体育   1716篇
综合类   10篇
文化理论   173篇
信息传播   1833篇
  2021年   165篇
  2020年   279篇
  2019年   407篇
  2018年   528篇
  2017年   561篇
  2016年   510篇
  2015年   345篇
  2014年   428篇
  2013年   3426篇
  2012年   407篇
  2011年   398篇
  2010年   347篇
  2009年   331篇
  2008年   405篇
  2007年   404篇
  2006年   341篇
  2005年   312篇
  2004年   324篇
  2003年   293篇
  2002年   245篇
  2001年   309篇
  2000年   325篇
  1999年   297篇
  1998年   160篇
  1997年   155篇
  1996年   182篇
  1995年   150篇
  1994年   164篇
  1993年   166篇
  1992年   278篇
  1991年   283篇
  1990年   275篇
  1989年   275篇
  1988年   208篇
  1987年   208篇
  1986年   232篇
  1985年   272篇
  1984年   217篇
  1983年   218篇
  1982年   186篇
  1981年   164篇
  1980年   157篇
  1979年   270篇
  1978年   181篇
  1977年   169篇
  1976年   172篇
  1975年   124篇
  1974年   165篇
  1972年   125篇
  1971年   129篇
排序方式: 共有10000条查询结果,搜索用时 171 毫秒
41.
This study examined the argument patterns that result when Israeli-Jews and Palestinians confront each other during group dialogues. We tested predictions derived from two theories. The first was a theory of cultural communication which predicted that Israeli-Jews and Palestinians would argue in a manner consistent with their respective cultural communication codes known as dugri and musayra respectively. Thus, the Israeli-Jews were expected to be assertive and the Palestinians more accommodating. The second theory was rooted in majority/minority power relations and predicted the opposite. The data were generated from reconciliation-based dialogue groups of Israeli-Jews and Palestinians. Communicative acts were coded according to the Conversational Argument Coding Scheme. Analysis of covariance was used to determine which patterns of argument distinguished the groups, and to identify variance attributable to lag sequences and individuals. The results were supportive of predictions from majority/minority power relations.  相似文献   
42.
43.
Cerebral activity, as reflected by power in the alpha waveband (8-13 Hz), was examined prior to the performance of three tasks with different effort and accuracy requirements. The study aimed to further investigate changes in activity observed in an earlier study in which expert karate performers exhibited significant increases in alpha band power during preparation for a training task. In contrast to the earlier research, the high effort task produced a significant decrease in 'alpha' power prior to performance. 'Alpha' power prior to the high accuracy task showed significant differences mediated by the outcome. Successful performance was preceded by higher levels of 'alpha' power than unsuccessful attempts. The reported use of a cognitive strategy on the first task produced a significant difference in activity, lower alpha power being associated with the use of such a technique.  相似文献   
44.
45.
46.
47.
48.
49.
The purpose of this study was to examine if steps/day taken by middle school students varied based on aerobic fitness classification. Middle school students (N = 223; 112 girls, 111 boys) were assigned to three aerobic fitness categories (HIGH, MOD, LOW) based on results of the FlTNESSGRAM PACER test. Four weekdays of pedometer monitoring determined activity levels (steps/day). Boys accumulated significantly more steps/day than girls, 11,589 +/- 3,270 and 10,232 +/- 2,517 steps/day, respectively; F(1,219) = 16.0, p < .001, eta2 = .055. There were no differences in steps/day between grades. HIGH fit participants accumulated significantly more steps/day, F(2, 217) = 12.2, p < .101, eta2 = .101, than moderately fit and low fit participants (approximately 1,491 and ; 2,867 steps/day, respectively). Middle school students who participated in sports in addition to physical education (PE) accumulated significantly more steps/day (approximately 980 steps/day) than those participating in PE only, F(1, 219) = 10.0, p < .01, eta2 = .044. Although the relationship between physical activity and aerobic fitness was moderate (0.35; p < .01), these data demonstrated significant differences in accumulated steps/day among youth of varying aerobic fitness levels. Whether improved fitness levels were the result of additional activity or the cause of it remains to be determined. Regardless, the fittest middle school students were also the most active and accumulated a significant amount of steps/day through organized extracurricular physical activities.  相似文献   
50.
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