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   4814篇
  免费   897篇
  国内免费   528篇
  6239篇
  2024年   15篇
  2023年   118篇
  2022年   157篇
  2021年   204篇
  2020年   303篇
  2019年   343篇
  2018年   286篇
  2017年   314篇
  2016年   300篇
  2015年   196篇
  2014年   228篇
  2013年   793篇
  2012年   185篇
  2011年   267篇
  2010年   166篇
  2009年   238篇
  2008年   261篇
  2007年   240篇
  2006年   259篇
  2005年   248篇
  2004年   175篇
  2003年   168篇
  2002年   128篇
  2001年   78篇
  2000年   78篇
  1999年   62篇
  1998年   55篇
  1997年   46篇
  1996年   40篇
  1995年   37篇
  1994年   37篇
  1993年   22篇
  1992年   20篇
  1991年   16篇
  1990年   11篇
  1989年   9篇
  1988年   6篇
  1986年   4篇
  1985年   20篇
  1984年   6篇
  1983年   5篇
  1982年   12篇
  1981年   5篇
  1980年   6篇
  1979年   11篇
  1978年   20篇
  1977年   19篇
  1976年   17篇
  1975年   3篇
  1973年   1篇
排序方式: 共有6239条查询结果,搜索用时 0 毫秒
861.
This study is the first to expand the investigation of study-abroad risks to include a range of traumatic experiences for male and female students and to examine effects of institutional betrayal (i.e., an institution’s failure to prevent trauma or support survivors). In an online survey of 173 university students who had studied abroad, many respondents (45.44%, n = 79) reported exposure to at least 1 traumatic experience while abroad, most frequently natural disasters, sexual assault, and unwanted sexual experiences. Of students exposed to potentially traumatic events, more than one third (35.44%, n = 28) also reported at least 1 form of related institutional betrayal, which uniquely correlated with posttraumatic distress in some participants, when controlling for lifetime trauma history.  相似文献   
862.
863.
864.
The rise in psychological problems, attrition, and suicide rates of university students has been linked to the stressful challenges faced during university life. To buffer this, animal assisted activities (AAA) may assist in improving psychological and physiological well‐being in students, however, to date, there is little empirical evidence for their effectiveness. Consequently, this study explored the psychological and physiological benefits of AAA in a sample of undergraduate students. Sixty‐two students from two local universities participated in an hour‐long AAA session delivered by Therapy Dogs Singapore. Measures of perceived stress, anxiety, state self‐esteem, and blood pressure (BP) were taken before and after the sessions. The results indicated that students experienced significant decreases in state anxiety, systolic, and diastolic BP post AAA, and when compared to a quiet reading comparison session. State self‐esteem increased post AAA and, further, was found to moderate the change in anxiety in addition to perceived stress, whereby perceived anxiety reduced more in those with low state self‐esteem and high perceived stress. These results suggest that AAA can be an effective intervention for stress among undergraduate students, which utilizes a novel, easy to implement and enjoyable approach for Singaporean students.  相似文献   
865.
The aim of this study was to profile the psychological coping, learning potential and career-related interests of 251 candidates for operational force military selection for the South African National Defence Force (SANDF) – 26 of whom were successful in the selection. Data on their sense of meaning, learning potential and career-related interest were gathered using standardised measures supplemented with open-ended responses. The data were analysed to compare the profiles of the successful candidates against those not selected. The selected group showed significantly higher mean scores on meaningfulness and learning potential, and lower scores for career-related interest in law and medicine. Findings suggest that psychological coping, learning potential and career-related preference information can be used to refine the selection of operational force military candidates.  相似文献   
866.
The progression in several cognitive tests for the same subjects at different ages provides valuable information about their cognitive development. One question that has caught recent interest is whether the same approach can be used to assess the cognitive development of artificial systems. In particular, can we assess whether the ‘fluid’ or ‘crystallised’ intelligence of an artificial cognitive system is changing during its cognitive development as a result of acquiring more concepts? In this paper, we address several IQ tests problems (odd-one-out problems, Raven’s Progressive Matrices and Thurstone’s letter series) with a general learning system that is not particularly designed on purpose to solve intelligence tests. The goal is to better understand the role of the basic cognitive operational constructs (such as identity, difference, order, counting, logic, etc.) that are needed to solve these intelligence test problems and serve as a proof-of-concept for evaluation in other developmental problems. From here, we gain some insights into the characteristics and usefulness of these tests and how careful we need to be when applying human test problems to assess the abilities and cognitive development of robots and other artificial cognitive systems.  相似文献   
867.
This quasi-experimental study evaluated the effectiveness of a multi-modal experiential stress management course for college students. Experiential approaches included yoga, mindfulness hiking, and equine-assisted stress management activities. Univariate analysis of covariance revealed significantly lower perceived stress for the experimental group at the conclusion of the stress management course. Repeated measures univariate analysis of variance revealed that the stress management course significantly reduced present moment stress over time and that equine-assisted activities were as effective as yoga and mindfulness hiking in reducing student stress.  相似文献   
868.
Most studies of trans prejudice, or prejudice against transgender people, have been conducted in Western countries. The current study explored trans prejudice in a sample of 124 heterosexual college students from the People's Republic of China. We also examined the relationship between gender self-esteem—the importance of gender to one's self-identity—and trans prejudice. Results indicated that men reported more trans prejudice than women. Both women and men reported more violence toward, teasing of, and discomfort with trans women compared with trans men. Gender self-esteem was not a significant predictor of trans prejudice for men or women. These results suggest that some of the predictors of trans prejudice in Chinese people may be similar to predictors found in Western samples. However, differences may be due to cultural factors such as membership in a collectivistic versus an individualistic society.  相似文献   
869.
随着我国全面二胎政策的实施,关于二胎家庭父母养育的问题越来越受到社会的广泛关注。但是,在我国这方面的研究极度稀缺。本文就二胎家庭父母养育的表现形式、影响因素及作用机制进行论述。二胎家庭父母养育的表现形式包括父母差别对待、协调同胞关系等。二胎家庭父母养育的影响因素包括父母养育第一胎的经验、婚姻质量、协同养育、儿童特点等。二胎父母养育的作用机制包括父母差别对待造成的儿童心理发展问题,以及父母在协调同胞关系中的作用。此外,本文结合已有文献,提出了一个"二胎家庭父母养育的过程机制"模型,揭示在二胎家庭情境下,各种因素是如何影响父母的养育模式,又通过哪些作用机制对家中的两个孩子产生影响。最后,强调未来我国的研究者应该重视本土化,关注社会变迁中二胎父母养育的特点。  相似文献   
870.
为深入了解大学生情感素质及其下属情感的相互关系,本文在已有全国大学生情感素质调查的基础上,利用决策树算法对大学生的情感素质及其下属情感(道德情感、生活情感、情绪智力)进行预测分类。结果表明:(1)决策树可以有效地对大学生情感素质下属各情感进行预测分类;(2)按属性重要性提取规则,道德情感对情感素质影响最大,生活情感次之;责任感对道德情感影响较大;自强感对生活情感有较强影响;理解他人情绪能力对情绪智力的影响较大。  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