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   70911篇
  免费   2815篇
  国内免费   39篇
  2020年   754篇
  2019年   961篇
  2018年   1372篇
  2017年   1409篇
  2016年   1497篇
  2015年   1021篇
  2014年   1217篇
  2013年   6048篇
  2012年   2186篇
  2011年   2350篇
  2010年   1403篇
  2009年   1398篇
  2008年   2069篇
  2007年   2085篇
  2006年   1824篇
  2005年   1671篇
  2004年   1628篇
  2003年   1520篇
  2002年   1572篇
  2001年   2299篇
  2000年   2195篇
  1999年   1680篇
  1998年   859篇
  1997年   747篇
  1996年   706篇
  1995年   680篇
  1994年   661篇
  1993年   668篇
  1992年   1366篇
  1991年   1310篇
  1990年   1281篇
  1989年   1169篇
  1988年   1151篇
  1987年   1105篇
  1986年   1126篇
  1985年   1192篇
  1984年   927篇
  1983年   838篇
  1979年   954篇
  1978年   710篇
  1975年   841篇
  1974年   923篇
  1973年   925篇
  1972年   785篇
  1971年   711篇
  1970年   674篇
  1969年   655篇
  1968年   851篇
  1967年   816篇
  1966年   724篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
901.
902.
903.
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   
904.
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   
905.
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   
906.
This project studied the effects of weather variables and size of the population on minor and major violence rates within six prisons in the Kingston, Ontario, Canada area from January, 1980 through December, 1983. While weather variables have been studied in relation to mood changes within the general population, this study was the first to analyze the impact of weather variables on rates of violence within the prison setting using forward inclusion multiple regression. Analysis showed that population size consistently appeared positively correlated with assaults on other inmates among the male medium-security prisoners during the summer months. In the summer months, temperature tended to be positively related to some minor kinds of offenses, but in the winter months the relationship was negative. Humidity, rain, sunshine hours, snow, and snow on the ground were not consistently related to incidences of minor and major violence. Indices of geomagnetic disturbances had statistically significant inverse relationships with attempted suicide/self-inflicted injury rates among the male prisoners during the summer months. Over 12 months, wind was generally negatively correlated with incidences of major and minor violence among the male inmates. For 6-mo. periods, wind was generally positively correlated with violence rates during the winter months and negatively correlated during the summer months among the male inmates. The findings relating weather variables to violence rates in the women's prison were consistently in opposition to those found for male prisoners during the 4-yr. period.  相似文献   
907.
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   
908.
909.
Since traumas leading to severe and permanent physical handicaps affect the whole personality, the psychological approach plays a major role in the rehabilitation of patients with locomotory handicaps owing to injury. The harmful effects become apparently more easily on account of the disturbed personality development of the cripple, and the consequent mental changes complicate his or her reintegration into society. Rehabilitation measures intended to restore, as far as possible, the physical functions can only yield satisfactory results if they prepare the whole personality of the cripple--as a combined psychological and somatic entity--for life of a different quality.  相似文献   
910.
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