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   38051篇
  免费   1476篇
  国内免费   16篇
  39543篇
  2020年   433篇
  2019年   545篇
  2018年   730篇
  2017年   794篇
  2016年   815篇
  2015年   565篇
  2014年   690篇
  2013年   2989篇
  2012年   1255篇
  2011年   1255篇
  2010年   818篇
  2009年   781篇
  2008年   1141篇
  2007年   1156篇
  2006年   1020篇
  2005年   918篇
  2004年   856篇
  2003年   812篇
  2002年   819篇
  2001年   1178篇
  2000年   1118篇
  1999年   877篇
  1998年   389篇
  1997年   385篇
  1996年   357篇
  1995年   364篇
  1992年   739篇
  1991年   658篇
  1990年   713篇
  1989年   616篇
  1988年   642篇
  1987年   604篇
  1986年   613篇
  1985年   552篇
  1984年   513篇
  1983年   489篇
  1982年   368篇
  1979年   578篇
  1978年   408篇
  1977年   354篇
  1975年   462篇
  1974年   506篇
  1973年   537篇
  1972年   404篇
  1971年   393篇
  1970年   356篇
  1969年   409篇
  1968年   485篇
  1967年   437篇
  1966年   359篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
Stress, locus of control, and achievement of high school seniors   总被引:1,自引:0,他引:1  
  相似文献   
142.
143.
144.
145.
Practice in front of a mirror is a common procedure for activities such as dance, gymnastics, and other sports. The purpose of this study was to examine the effect that performing with concurrent visual feedback from a mirror had on the acquisition of the power clean movement. 18 college-age males who had no prior experience with the power clean movement served as subjects who were assigned to one of two groups. One group had use of a mirror during the practice trials and the other practiced without the mirror. All subjects viewed an instructional videotape and had practice trials. All subjects were evaluated for proper technique on a pretest, a posttest without the mirror, and a posttest with the mirror. Analysis showed a significant difference between pre- and posttest performances for both groups and a significant difference between groups on the posttest performances with the mirror. Evidently the videotaped instruction was sufficient to allow both groups to improve in performance of the power clean. Differences in posttest performances with the mirror reflected the type of feedback (with or without the mirror) available during training.  相似文献   
146.
Previous research has suggested that women with a negative emotional orientation toward sexuality (i.e., erotophobia) have difficulty learning and retaining sexually relevant material such as contraceptive information. It has been hypothesized that these women become aroused by this material and that this arousal interferes with their ability to learn it. The importance of this issue led us to conduct the current study. Erotophobic and erotophilic women viewed presentations about contraception while their physiological responses were being monitored. In addition, they were tested on the information contained in the presentation before, immediately after, and again 4-6 weeks after the presentation. The results indicated that the erotophobic women knew less contraceptive information before the presentation and were more aroused by the presentation. This arousal, however, did not interfere with retention of the material. These results are discussed in terms of individual differences in reactions to sexual material and the ability to learn, retain, and use contraceptive information.  相似文献   
147.
148.
149.
The IES Arrow-Dot was administered to 41 cocaine detoxification patients. This group's scores indicated lower ego functioning and higher impulsivity and superego functioning than other clinical samples. No significant differences were noted between the Arrow-Dot scores of patients who successfully completed the program and those who did not.  相似文献   
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