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   21356篇
  免费   89篇
  2023年   12篇
  2022年   7篇
  2021年   13篇
  2020年   28篇
  2019年   41篇
  2018年   3511篇
  2017年   2848篇
  2016年   2289篇
  2015年   221篇
  2014年   121篇
  2013年   219篇
  2012年   636篇
  2011年   2440篇
  2010年   2541篇
  2009年   1507篇
  2008年   1745篇
  2007年   2206篇
  2006年   79篇
  2005年   244篇
  2004年   216篇
  2003年   141篇
  2002年   101篇
  2001年   42篇
  2000年   60篇
  1999年   28篇
  1998年   37篇
  1997年   29篇
  1996年   12篇
  1995年   8篇
  1994年   2篇
  1993年   3篇
  1992年   4篇
  1991年   3篇
  1990年   9篇
  1989年   3篇
  1988年   2篇
  1986年   2篇
  1985年   2篇
  1984年   4篇
  1982年   4篇
  1980年   4篇
  1979年   2篇
  1975年   2篇
  1974年   3篇
  1970年   2篇
  1968年   1篇
  1966年   1篇
  1965年   2篇
  1956年   2篇
  1953年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
Abstract— Semantically associated and unassociated word pairs were embedded in normal meaningful sentences and in sentences that were semantically anomalous throughout The influence of lexical context was isolated via comparison of responses to the second words of the associated and unassociated pairs. The influence of sentence-level context was isolated by comparing responses to the same words in the two sentence types Subjects of high, medium and low working memory capacity (as evaluated by the reading span test) showed modulations of event-related brain potentials in response so lexical context. In contrast, only the high- and medium-capacity groups were responsive to purely sentence-level semantic context. The results demonstrate that sentential context influences the processing of words in intermediate sentence positions at normal reading speeds but that the on-line utilization of this context is more demanding of working memory than single-word contexts.  相似文献   
32.
33.
How can we explain that an assertion on something perceived can be understood in the same manner by somebody who cannot perceive that scene? This problem bases the interest in computational linguistics in how listener modeling could possibly be harmonized with reference semantics. Mental images substituting real perception appear as a way out. The architecture of the listener model has to be adapted to the creation and use of such pictorial data structures. Furthermore, the relation between the latter and a verbal (i. e., propositional) representation must be understood. The resulting architecture of a listener model with reference semantics can be employed to solve communicational problems from three general classes in a better way, as is demonstrated by an example implementation.  相似文献   
34.
Over the past decade, sport participation opportunities for females have increased dramatically. The purposes of this study were to compare perceptions of encouragement and support from socializing agents for: (a) female collegiate volleyball players competing during the 1979 and 1989 seasons, and (b) female collegiate athletes and female and male nonathletes. Female athletes (n= 345), female nonathletes (n= 128), and male nonathletes (n= 88) completed a questionnaire to assess significant others' influence on sport involvement during childhood, adolescence, and college years. Results indicated that interest and encouragement by parents, older siblings, and friends significantly increased for female athletes over the past 10 years during one or more developmental period. Discriminant analyses revealed that female athletes perceived stronger influences from mother, siblings, friends, and coaches than did male and female nonathletes. These results demonstrate that female athletes received greater social support than their peers a decade earlier, and these influences were significantly different than male and female nonathletes. This study was supported by a grant awarded to the first author by the Center for the Study of Women in Society, University of Oregon, Eugene.  相似文献   
35.
Abstract— Fourteen-year-old adolescents' behavior on a spatial-visual reasoning task was associated with self-report of their mothers' alcohol consumption during pregnancy, IS years earlier The task was arranged so that it was possible to evaluate the examinees' tendency to respond rapidly and less accurately, or slowly and more accurately The greater the mother's reported drinking, the faster and less accurately the adolescent responded The decrement in visual-spatial reasoning related to alcohol appears to be linked to a tendency toward impulsive responding  相似文献   
36.
Heather A. Turner 《Sex roles》1994,30(7-8):521-541
In examining past research, a paradox can be found in the relationships between gender, social support, and depression. Although women report higher levels of depression than men, they also generally report more social support—a factor found to reduce depressive symptoms. In efforts to explain this seeming inconsistency, it was hypothesized that women report both more support and more depression because they are more likely than men to experience both positive and negative aspects of social relationships. Based on a community sample of predominantly Caucasian respondents, findings indicate that greater perceived support among women can be explained by more frequent contact with network members and a tendency to possess relationships characterized by greater intimacy, emotional disclosure, and empathy. However, women also report more frequent negative interactions with network members and are more adversely affected by marital conflict than are men. While negative interactions and conflict cannot account for gender differences in depression, they do help to explain how women can experience both more support and more depression. Among women, the health-enhancing effects of support on depression may be balanced by the detrimental effect of conflict.  相似文献   
37.
38.
Recent research in organizational psychology has recognized the value of exploring the person-situation interactional perspective as a determinant of work outcomes. The present field study investigated the interaction between self-leadership and work structure (supervisory structure and job autonomy) and their relation to job satisfaction. Seventy-six employees provided measures of self-leadership, employment characteristics, and job satisfaction. Performance data for participants was also collected from the organization. Satisfaction was higher for employees with high (low) self-leadership who worked in low (high) structure environments. These results suggest that affective response to the job may be influenced by specific combinations of person and situation variables. Implications of the current results with regard to person-environment fit are discussed.  相似文献   
39.
40.
Reliable monitoring of the movement of small aquatic animals presents some unique problems. In the case of the larval salamander, the animal may be less than an inch long and move in sporadic short bursts. A device is described that utilizes infrared emitters and wide-band sensors inter-faced to a computer for monitoring location and movement of animals between light and dark environments over extended periods of time. The system employs a multiplexed digital input, is inexpensive, and can be easily expanded to deal with a range of monitoring problems that may occur with a wide range of both aquatic and terrestrial species.  相似文献   
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