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   31568篇
  免费   1351篇
  国内免费   26篇
  2020年   339篇
  2019年   426篇
  2018年   607篇
  2017年   575篇
  2016年   661篇
  2015年   434篇
  2014年   535篇
  2013年   2458篇
  2012年   998篇
  2011年   1007篇
  2010年   589篇
  2009年   665篇
  2008年   840篇
  2007年   865篇
  2006年   765篇
  2005年   670篇
  2004年   657篇
  2003年   604篇
  2002年   629篇
  2001年   1064篇
  2000年   1062篇
  1999年   777篇
  1998年   330篇
  1997年   305篇
  1995年   318篇
  1992年   636篇
  1991年   599篇
  1990年   573篇
  1989年   546篇
  1988年   545篇
  1987年   490篇
  1986年   487篇
  1985年   538篇
  1984年   447篇
  1983年   406篇
  1982年   312篇
  1979年   483篇
  1978年   332篇
  1977年   305篇
  1976年   327篇
  1975年   372篇
  1974年   441篇
  1973年   478篇
  1972年   411篇
  1971年   355篇
  1970年   327篇
  1969年   346篇
  1968年   427篇
  1967年   378篇
  1966年   367篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
932.
This paper reports on several patients who use sado-masochism as a defense against an unconscious wish for and fear of merging. The sado-masochism can be expressed as a sexual perversion or in a difficult ungratifying interpersonal relationship. These relationships have some of the quality of addictions in that the patients have a compulsive need to continue them and find it extremely difficult to leave them. Therapy must focus on helping the patient become more separate, rather than on other problems which may also be present. Initially, the therapist needs to take an educational stance in regard to the process the patient must complete, rather than the more traditional analytic stance.  相似文献   
933.
934.
ABSTRACT Previous research has indicated that extraversion and neuroticism are substantially affected both by genotype and environment. This study assesses genetic and environmental influences on the other three components of the five-factor model of personality: Openness to Experience, Agreeableness, and Conscientiousness. An abbreviated version of the NEO Personality Inventory (NEO-PI) was administered to 82 pairs of identical twins and 171 pairs of fraternal twins reared apart and 132 pairs of identical twins and 167 pairs of fraternal twins reared together. Estimates of genetic and environmental effects for Openness and Conscientiousness were similar to those found in other studies of personality: Genetic influence was substantial and there was little evidence of shared rearing environment. Results for Agreeableness were different: Genetic influence accounted for only 12% of the variance and shared rearing environment accounted for 21% of the variance. Few significant gender or age differences for genetic and environmental parameters were found in model-fitting analyses.  相似文献   
935.
936.
The authors report a study that suggests the career paths of workers on short-term federal projects may be enhanced as a result of developing a relationship with a mentor through such projects.  相似文献   
937.
Because rheumatoid arthritis (RA) has a more unpredictable course than osteoarthritis (OA), we hypothesized that generalized expectancies (optimistic/ pessimistic) influence the psychosocial adjustment of RA patients, whereas disease severity influences the adjustment of OA patients. Path analysis (LISREL VI) revealed that pessimistic RA patients (N= 107) and the more physically disabled OA patients (N= 108) reported poorer adjustment. The hypothesized mediating role of coping was supported for the RA but not the OA sample; that is, pessimism was associated with poor adjustment through greater use of wishful thinking coping. Unexpectedly, problem-solving coping was not found to mediate the optimism adjustment relationship.  相似文献   
938.
There is growing evidence to suggest that the ways in which people think about their health problems may have significant implications for psychological and physical well-being. This possibility has the greatest consequences for those groups facing health problems on a daily basis, in particular, the elderly. This study examined the role of perceived health barriers and value for health in later life. A Perceived Health Barriers (absent, present) by Health Value (low, medium, high) 2.3 factorial design was analyzed for younger and older seniors on: number of life-threatening diseases, need for health care, and life satisfaction. In addition, a longitudinal design was used to examine the joint roles of perceived health barriers (PHBs) and health value (HV) on mortality. Findings generally indicated that individuals’ PHBs and HV are associated with health-related outcomes; however, the results differed for young and old elders. Among young elders, those with PHBs and those with high HV had the most negati e profile. That is, they had more diseases, higher health care needs, and lower life satisfaction. Among older elders, the findings were more complicated in that the relationship between PHB and the outcomes depended on HV. Overall, the patterns for old elders suggest that perceived health barriers are most relevant among those with medium value for health and least relevant among those with low value for health.  相似文献   
939.
The Family Factors Field Study of Operation Desert Shield/Storm (ODS) was designed to collect data on the impact of the Persian Gulf deployment on soldier/family well-being, and the effectiveness of Army and community resources in assisting and supporting families of deployed soldiers. In October 1990, a task force was assembled, and multi-agency research teams visited several Army installations. Informal individual and group interviews were conducted with spouses, unit family support leaders, unit rear detachment personnel, garrison leaders, and local Army program/service providers. The questions were aimed at identifying key stressors which spouses and children experienced in relation to the sudden deployment, as well a stress mediators such as social supports and personal coping skills. Anecdotal information collected during the site visits, combined with findings from previous research on Army families, was used to develop a questionnaire designed to quantify those variables which emerged as relevant to a study of stressors and stress mediators in the context of the ODS deployment.  相似文献   
940.
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