全文获取类型
收费全文 | 60259篇 |
免费 | 1683篇 |
国内免费 | 14篇 |
专业分类
61956篇 |
出版年
2020年 | 396篇 |
2019年 | 478篇 |
2018年 | 3962篇 |
2017年 | 3299篇 |
2016年 | 2862篇 |
2015年 | 711篇 |
2014年 | 673篇 |
2013年 | 2884篇 |
2012年 | 1705篇 |
2011年 | 3429篇 |
2010年 | 3136篇 |
2009年 | 2099篇 |
2008年 | 2647篇 |
2007年 | 3110篇 |
2006年 | 919篇 |
2005年 | 1050篇 |
2004年 | 955篇 |
2003年 | 835篇 |
2002年 | 801篇 |
2001年 | 1322篇 |
2000年 | 1295篇 |
1999年 | 932篇 |
1998年 | 444篇 |
1996年 | 377篇 |
1992年 | 890篇 |
1991年 | 829篇 |
1990年 | 851篇 |
1989年 | 731篇 |
1988年 | 729篇 |
1987年 | 697篇 |
1986年 | 734篇 |
1985年 | 812篇 |
1984年 | 617篇 |
1983年 | 564篇 |
1982年 | 387篇 |
1981年 | 377篇 |
1979年 | 703篇 |
1978年 | 450篇 |
1977年 | 425篇 |
1976年 | 420篇 |
1975年 | 603篇 |
1974年 | 680篇 |
1973年 | 737篇 |
1972年 | 626篇 |
1971年 | 586篇 |
1970年 | 577篇 |
1969年 | 569篇 |
1968年 | 760篇 |
1967年 | 666篇 |
1966年 | 602篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
881.
Past studies have shown that stuttering is eliminated when speech is synchronized with a metronomic beat, but the speech sounds artificial. The present study investigated the effect of increasing the duration of these individual stimulus beats with the stimulus-off period constant at 1 sec. When subjects were instructed to speak during the stimulus-on period, stuttering was an inverse function of stimulus duration, indicating that the known metronome effect on stuttering is one point on a continuum of effective rhythm procedures. The "naturalness" of speech increased as the stimulus duration increased up to durations of about 2 sec, and then decreased. At optimal values, stuttering was greatly reduced and naturalness and rapidity of speech were retained. These optimal values effectively controlled stuttering in a field test that used two types of specially designed portable instruments, one of which produced a tactual stimulus and the other an auditory stimulus. 相似文献
882.
883.
Donald J. Searls Alan L. Sternberg Lowell T. Wilson R. W. Miskimins 《Journal of Employment Counseling》1969,6(1):22-26
The experiences of the placement department of the Mental Health and Manpower Project have demonstrated that an effective team can be created to develop job opportunities for the mentally restored psychiatric patient. Composed of a vocational counselor and a placement counselor, the team is effective in securing meaningful employment and developing re-education programs in the community. While the vocational counselor provides the clinical information concerning the restored patient-client, the placement counselor serves as a more personnel oriented individual in finding the appropriate kind of employment position. The team points to the potential that the mental health center possesses in involving the general community in its programs. 相似文献
884.
885.
Effect of hippocampal isolation on retention 总被引:1,自引:0,他引:1
886.
Food-associated drinking in the rat 总被引:4,自引:0,他引:4
H R Kissileff 《Journal of comparative psychology (Washington, D.C. : 1983)》1969,67(3):284-300
887.
888.
889.
890.