全文获取类型
收费全文 | 31828篇 |
免费 | 1346篇 |
国内免费 | 25篇 |
专业分类
33199篇 |
出版年
2020年 | 339篇 |
2019年 | 423篇 |
2018年 | 599篇 |
2017年 | 572篇 |
2016年 | 651篇 |
2015年 | 431篇 |
2014年 | 527篇 |
2013年 | 2407篇 |
2012年 | 1003篇 |
2011年 | 1006篇 |
2010年 | 605篇 |
2009年 | 672篇 |
2008年 | 855篇 |
2007年 | 865篇 |
2006年 | 770篇 |
2005年 | 679篇 |
2004年 | 650篇 |
2003年 | 593篇 |
2002年 | 615篇 |
2001年 | 1053篇 |
2000年 | 1055篇 |
1999年 | 784篇 |
1998年 | 331篇 |
1997年 | 309篇 |
1995年 | 325篇 |
1992年 | 641篇 |
1991年 | 615篇 |
1990年 | 585篇 |
1989年 | 566篇 |
1988年 | 554篇 |
1987年 | 506篇 |
1986年 | 502篇 |
1985年 | 552篇 |
1984年 | 464篇 |
1983年 | 424篇 |
1982年 | 339篇 |
1979年 | 502篇 |
1978年 | 354篇 |
1977年 | 315篇 |
1976年 | 324篇 |
1975年 | 373篇 |
1974年 | 449篇 |
1973年 | 475篇 |
1972年 | 415篇 |
1971年 | 360篇 |
1970年 | 342篇 |
1969年 | 342篇 |
1968年 | 423篇 |
1967年 | 379篇 |
1966年 | 361篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
Following Altman's privacy regulation model, this research was based on the assumption that the relationship between achieved and desired levels of privacy is a major determinant of the experience of crowding in small groups. Further, on the basis of evidence that advancing age is associated with a chronic lack of communicative interaction, it was assumed that the achieved level of privacy among elderly persons generally is greater than that experienced by young adults. Given these assumptions, it was predicted that the crowding threshold of young adults would be significantly lower than that of older persons. To test this hypothesis, the research varied conversation distance (close, far) and density (small room, large room) and assessed the quality of communicative interaction and task performance among small groups of college-age females and retired women over 60 years of age. Results showed that task performance among younger subjects deteriorated in close interaction conditions, whereas the performance of older subjects was improved by spatial intrusion. Further, older subjects exhibited positive communication behaviors in response to close conversation, high-density conditions, while younger subjects responded either with negative communication behaviors or were unaffected by spatial restriction. Finally, the research confirmed previous findings that conversation distance is a more important determinant of the experience of crowding in small groups than physical density. The significance of the results for Altman's privacy regulation model and their implications for the study of human communication behaviors were discussed. 相似文献
23.
This study examines the relationship of life stress, daily hassles, and perceived self-efficacy to adjustment in a community sample of 32 men and 32 women between ages 65 and 75. In a structured interview, negative life change events, daily hassles, self-efficacy, depression, psychosomatic symptoms, and negative well being were assessed. Both negative life events and daily hassles were related to psychological distress and physical symptoms for men, and hassles were associated with psychological distress and physical symptoms for women. An inverse relationship between self-efficacy and maladjustment was also found. Hassles showed the most powerful relationship to distress. 相似文献
24.
25.
26.
27.
28.
The token economy has been the primary model for the behavioral management of inpatient populations. However, this basically operant approach seldom emphasizes the development of cognitive-coping skills to help patients more effectively manage stressors that result in hospitalization. The Therapeutic Contract Program (TCP) is described as an inpatient-treatment strategy that is designed to help foster such cognitive-coping and self-control skills. While external structure is provided by components of this program, subprograms of the TCP have as their goal the development of internally-attributed coping skills and self-perceptions of competence. This preliminary report describes the structure of the TCP, as well as planned and in-progress measures of program participation and treatment outcome. 相似文献
29.
30.