全文获取类型
收费全文 | 3421篇 |
免费 | 128篇 |
国内免费 | 1篇 |
出版年
2021年 | 21篇 |
2020年 | 30篇 |
2019年 | 51篇 |
2018年 | 59篇 |
2017年 | 74篇 |
2016年 | 84篇 |
2015年 | 55篇 |
2014年 | 71篇 |
2013年 | 328篇 |
2012年 | 110篇 |
2011年 | 140篇 |
2010年 | 90篇 |
2009年 | 76篇 |
2008年 | 127篇 |
2007年 | 124篇 |
2006年 | 126篇 |
2005年 | 127篇 |
2004年 | 134篇 |
2003年 | 127篇 |
2002年 | 122篇 |
2001年 | 56篇 |
2000年 | 59篇 |
1999年 | 64篇 |
1998年 | 72篇 |
1997年 | 54篇 |
1996年 | 38篇 |
1995年 | 51篇 |
1994年 | 58篇 |
1993年 | 53篇 |
1992年 | 45篇 |
1991年 | 39篇 |
1990年 | 45篇 |
1989年 | 37篇 |
1988年 | 30篇 |
1987年 | 37篇 |
1986年 | 44篇 |
1985年 | 37篇 |
1984年 | 53篇 |
1983年 | 50篇 |
1982年 | 46篇 |
1981年 | 53篇 |
1980年 | 41篇 |
1979年 | 46篇 |
1978年 | 39篇 |
1977年 | 37篇 |
1976年 | 35篇 |
1975年 | 37篇 |
1974年 | 35篇 |
1973年 | 22篇 |
1966年 | 18篇 |
排序方式: 共有3550条查询结果,搜索用时 15 毫秒
51.
52.
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
53.
Simultaneous recording from scalp and cortical electrodes in unanesthetized and unrestrained cats revealed essentially no differences between the superficial and deep recordings of the auditory evoked responses. Human recordings taken under two conditions of muscular contraction contained no major differences from 30 to 300 msec after stimulus onset. 相似文献
54.
Drug effects in squirrel monkeys trained on a multiple schedule with a punishment contingency 总被引:1,自引:0,他引:1 下载免费PDF全文
H. M. Hanson J. J. Witoslawski E. H. Campbell 《Journal of the experimental analysis of behavior》1967,10(6):565-569
The behavior of four monkeys trained on a multiple schedule was differentially sensitive to selected pharmacological agents. The three components of the multiple schedule were: (1) a variable-interval schedule in which responses were reinforced on the average of once per minute; (2) a concurrent schedule in which every tenth response was reinforced and every fifteenth response, on the average, was shocked; and, (3) a neutral stimulus in the presence of which responses were neither reinforced nor shocked. Pentobarbital, chlordiazepoxide, and meprobamate increased responding during each of the components. Scopolamine and d-amphetamine decreased variable-interval performance, had minimal effects on performance during the concurrent-schedule component, and increased responding in the presence of the neutral stimulus. Chlorpromazine decreased variable-interval responding and had slight effects on the responding during the other two components. 相似文献
55.
56.
H. Alan Robinson Ralph P. Connors G. Holly Whitacre 《Journal of counseling and development : JCD》1966,45(4):371-379
This annual review of job satisfaction researches is the 23rd in a series and covers reports published in 1964–65 plus earlier studies not previously dealt with in this journal. The format—findings and conclusions, topics investigated, per cent dissatisfied, current emphases, and summaries of studies—has become standard in this series of articles. 相似文献
57.
Left and right halves of a visual display were covered with inducing fields (IFs) of different lightnesses. S’s monocular gaze moved over an irreversible route from a neutral Munsell target to a CO series through either the left- or right-side IFs. For the 16 Ss there were 8 different IFs, varying from light to dark. For each of three different gray targets Munsell CO choices varied directly with the lightness of the IFs through which the gaze was routed rather than with the lightness of the total presented display. A replication with modifications is also reported. 相似文献
58.
59.
Erratum
Overt integrity tests versus personality-based measures of delinquency: An empirical comparis 相似文献60.
Matthew G. Hile Donna M. Campbell Bagher B. Ghobary Marcie N. Desrochers 《Behavior research methods》1993,25(2):195-198
The development of expert and decision support systems requires the collection, organization, codification, and storage of a body of specialized knowledge. The development, using reconstructive methods, of two such knowledge bases, the first containing the current scientific literature and the second containing an expert’s knowledge, is described for an automated decision support system, the Mental Retardation-Expert. This system provides practitioners with assistance in the treatment of aggressive, self-injurious, and destructive behaviors displayed by individuals with mental retardation or developmental disabilities. The average interobserver reliability of the expert knowledge base ranged from 92.5% to 95.0% when calculated across four clinicians’ assessments of 31 abstracted cases. 相似文献