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   86718篇
  免费   3515篇
  国内免费   36篇
  2020年   1045篇
  2019年   1247篇
  2018年   1758篇
  2017年   1825篇
  2016年   1868篇
  2015年   1331篇
  2014年   1615篇
  2013年   7327篇
  2012年   2965篇
  2011年   2971篇
  2010年   1853篇
  2009年   1831篇
  2008年   2615篇
  2007年   2594篇
  2006年   2334篇
  2005年   1996篇
  2004年   1979篇
  2003年   1871篇
  2002年   1837篇
  2001年   2756篇
  2000年   2594篇
  1999年   1986篇
  1998年   938篇
  1997年   845篇
  1996年   889篇
  1995年   835篇
  1994年   811篇
  1993年   817篇
  1992年   1657篇
  1991年   1501篇
  1990年   1540篇
  1989年   1421篇
  1988年   1430篇
  1987年   1327篇
  1986年   1325篇
  1985年   1329篇
  1984年   1140篇
  1983年   1027篇
  1979年   1222篇
  1978年   883篇
  1975年   982篇
  1974年   1098篇
  1973年   1153篇
  1972年   938篇
  1971年   893篇
  1970年   778篇
  1969年   808篇
  1968年   1022篇
  1967年   907篇
  1966年   803篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
M Kaffman 《Family process》1985,24(1):113-127
This article is a personal statement of my beliefs and practice of family therapy, from the time I first introduced the concept to Israel over twenty years ago to the present day. It reflects the evolution and changes in my clinical work against the background of major developments in the field of family therapy.  相似文献   
992.
993.
994.
995.
Personal space zones were examined amongst Arab and American university students by jointly varying degree of acquaintanceship and sex of subject. Overall, there were few differences between Arab and American males. Arab females, however, showed dramatic differences in comparison to American males and females and to Arab males. Arab females kept male friends very far away relative to female friends. Indeed, male friends were kept almost as far away as male strangers.  相似文献   
996.
The effects of stimulus person characteristics (viz., race, occupational status, religion, and nationality) and the respondent's level of dogmatism upon the social distance responses of a sample of Canadian university students were examined. Occupational status, race, and nationality of the stimulus person emerged as significant determinants, with occupational status being by far the most important. Dogmatism was also correlated with social distance responses. Highly dogmatic persons, but not those low in dogmatism, focused on occupational status in deciding acceptable bounds of intimacy with others. Several explanations for the prominence of occupational status as a social distance cue are discussed. As well, directions for future research into social distance norms in Canada are suggested.  相似文献   
997.
998.
999.
1000.
The effects of altering light pattern sequences on driver compliance at a busy, urban intersection were explored. The baseline light timing sequences resulted in only 46.8% of drivers stopping at the yellow or red lights. Using an A-B-C design, we altered light pattern sequences that increased the probability of drivers stopping at the signals to 88.8% and 98.8%. These findings indicate that traffic light contingencies have potent effects in influencing driver behaviors at busy intersections. Following completion of the study, the traffic engineer approved the permanence of the light timing pattern that increased traffic rule compliance. Accident data collected before and after the light timing changes indicated a reduction in automobile accidents.  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