全文获取类型
收费全文 | 70174篇 |
免费 | 2672篇 |
国内免费 | 38篇 |
出版年
2020年 | 745篇 |
2019年 | 894篇 |
2018年 | 1318篇 |
2017年 | 1348篇 |
2016年 | 1405篇 |
2015年 | 927篇 |
2014年 | 1158篇 |
2013年 | 5858篇 |
2012年 | 2148篇 |
2011年 | 2329篇 |
2010年 | 1379篇 |
2009年 | 1377篇 |
2008年 | 2070篇 |
2007年 | 2049篇 |
2006年 | 1813篇 |
2005年 | 1643篇 |
2004年 | 1602篇 |
2003年 | 1477篇 |
2002年 | 1548篇 |
2001年 | 2270篇 |
2000年 | 2188篇 |
1999年 | 1664篇 |
1998年 | 873篇 |
1997年 | 744篇 |
1996年 | 677篇 |
1994年 | 652篇 |
1993年 | 676篇 |
1992年 | 1348篇 |
1991年 | 1263篇 |
1990年 | 1283篇 |
1989年 | 1176篇 |
1988年 | 1125篇 |
1987年 | 1130篇 |
1986年 | 1117篇 |
1985年 | 1196篇 |
1984年 | 930篇 |
1983年 | 826篇 |
1982年 | 668篇 |
1979年 | 973篇 |
1978年 | 730篇 |
1975年 | 888篇 |
1974年 | 927篇 |
1973年 | 898篇 |
1972年 | 810篇 |
1971年 | 716篇 |
1970年 | 649篇 |
1969年 | 702篇 |
1968年 | 834篇 |
1967年 | 810篇 |
1966年 | 745篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
921.
922.
923.
924.
925.
926.
G Ungvári 《Psychiatrie, Neurologie, und medizinische Psychologie》1985,37(5):262-271
The author diagnoses 350 carefully selected schizophrenic subjects, their parents and their siblings during parallel studies using three different clinical classification systems and analyzes the results by multiple threshold analysis and the multifactorial inheritance model. The results suggest that, of the three classifications the author studied, Leonhard's and Sneshnewski's system yield relatively homogeneous subgroups; this indicates the future significance of these nosological systems for the planning of biopsychiatric research. 相似文献
927.
THE EFFECTS OF PSYCHOLOGICALLY BASED INTERVENTION PROGRAMS ON WORKER PRODUCTIVITY: A META-ANALYSIS 总被引:2,自引:0,他引:2
A meta-analysis of the effects on worker productivity of 11 types of psychologically based organizational interventions showed that such programs, on average, raised worker productivity by nearly one-half standard deviation. The strength of effects was found to vary by type of intervention, criterion of productivity, contextual factors in organizations, and features of research design. Also discussed in the paper are comparisons of conclusions reached through meta-analysis versus traditional methods of literature review. 相似文献
928.
In a series of experiments, college students, line managers, and compensation managers allocated salary increases to hypothetical job holders who varied in the criticality of their positions for accomplishment of organizational goals, occupational marketability, job performance, personal need for money, and increase in capability since the last performance review. Results indicated that though performance had the largest impact, a number of nonperformance factors also influenced the recommendations. Salary recommendations were lower when constrained by a budget, and performance, growth in capabilities, marketability, and criticality were all significantly related to the magnitudes of suggested increases. 相似文献
929.
On the basis of the cerebral dominance, we have hypothesized an asymmetry (for saturation or brightness) between the two eyes in perception of chromatic stimuli. 51 subjects were tested on chromatic perception (green, red, yellow, blue). For each subject also an ocular-dominance score was obtained. The results substantially confirmed the hypothesis of cerebral dominance in color perception. Subjects with high ocular-dominance scores (right- or left-dominant subjects) showed for the green stimulus asymmetric behavior, while subjects with low ocular-dominance scores showed a tendency toward symmetry in perception. 相似文献
930.
40 women were taught to use self-statements to cope with pain caused by ice water. The trainer used four different strategies for reassigning a homework task of using self-statements to cope with pain produced by immersing one hand in ice water. The strategies were equally effective in eliciting compliance with the homework assignment. 相似文献