全文获取类型
收费全文 | 37785篇 |
免费 | 1511篇 |
国内免费 | 16篇 |
专业分类
39312篇 |
出版年
2020年 | 454篇 |
2019年 | 565篇 |
2018年 | 755篇 |
2017年 | 830篇 |
2016年 | 840篇 |
2015年 | 578篇 |
2014年 | 709篇 |
2013年 | 2990篇 |
2012年 | 1280篇 |
2011年 | 1281篇 |
2010年 | 821篇 |
2009年 | 777篇 |
2008年 | 1129篇 |
2007年 | 1141篇 |
2006年 | 1020篇 |
2005年 | 893篇 |
2004年 | 837篇 |
2003年 | 792篇 |
2002年 | 811篇 |
2001年 | 1163篇 |
2000年 | 1112篇 |
1999年 | 864篇 |
1998年 | 374篇 |
1997年 | 375篇 |
1995年 | 352篇 |
1993年 | 345篇 |
1992年 | 732篇 |
1991年 | 645篇 |
1990年 | 696篇 |
1989年 | 604篇 |
1988年 | 635篇 |
1987年 | 595篇 |
1986年 | 603篇 |
1985年 | 541篇 |
1984年 | 499篇 |
1983年 | 479篇 |
1982年 | 344篇 |
1979年 | 569篇 |
1978年 | 395篇 |
1977年 | 342篇 |
1975年 | 448篇 |
1974年 | 496篇 |
1973年 | 534篇 |
1972年 | 395篇 |
1971年 | 388篇 |
1970年 | 349篇 |
1969年 | 401篇 |
1968年 | 470篇 |
1967年 | 430篇 |
1966年 | 356篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
132.
133.
134.
Stress, locus of control, and achievement of high school seniors 总被引:1,自引:0,他引:1
135.
136.
M L O'Brien 《Psychological reports》1988,62(3):879-882
137.
138.
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
139.
L Goldfarb M Gerrard F X Gibbons T Plante 《Journal of personality and social psychology》1988,55(4):634-641
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
140.