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   2081篇
  免费   285篇
  国内免费   148篇
  2024年   5篇
  2023年   76篇
  2022年   68篇
  2021年   96篇
  2020年   159篇
  2019年   180篇
  2018年   187篇
  2017年   164篇
  2016年   178篇
  2015年   96篇
  2014年   119篇
  2013年   385篇
  2012年   67篇
  2011年   61篇
  2010年   50篇
  2009年   49篇
  2008年   66篇
  2007年   63篇
  2006年   47篇
  2005年   63篇
  2004年   41篇
  2003年   39篇
  2002年   28篇
  2001年   33篇
  2000年   32篇
  1999年   19篇
  1998年   26篇
  1997年   27篇
  1996年   11篇
  1995年   20篇
  1994年   12篇
  1993年   5篇
  1992年   10篇
  1991年   2篇
  1990年   3篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1986年   2篇
  1985年   6篇
  1984年   2篇
  1983年   1篇
  1982年   2篇
  1980年   1篇
  1979年   2篇
  1978年   1篇
  1977年   3篇
  1976年   2篇
  1975年   1篇
  1974年   1篇
排序方式: 共有2514条查询结果,搜索用时 31 毫秒
251.
This is a study which investigates some difficulties people with schizophrenia have in the long term; looks at some of the psychoanalytical theories concerning the difficulties they have in keeping an internal caring maternal imago; the consequences for them; how the NHS can help by providing an external caring maternal imago.  相似文献   
252.
Previous research has indicated that the effects of in‐group social value on mental health are mediated by the extent to which individuals identify with their in‐group. Other research has shown that in‐group identification leads to positive mental health because it provides in‐group members with a psychological basis for social support. We examine how the individual's perception of the social value of the in‐group leads to positive mental health, integrating the effects of identification with and support from the in‐group. As predicted, the relationship between higher social value and decreased mental health (e.g. depression, perceived stressful events) is mediated by higher in‐group identification, which in turn leads the members to expect support from the in‐group but not the out‐group. An integrated model of the effects of perceived in‐group social value, identification, and support on mental health is proposed, and the implications are discussed.  相似文献   
253.
Researchers propose social support as one of the factors that may explain the positive relationship often observed between religious involvement and health outcomes. African-Americans are a population that tends to have higher than average levels of religious involvement and are also disproportionately impacted by most health conditions. The present study sought to determine whether social support mediates the role of religious involvement in physical and emotional functioning and depressive symptoms, among a national probability sample of African-Americans (N = 803). Study participants completed telephone interviews. We used structural equation modelling to test hypotheses based on the theoretical model. Findings suggest evidence for a mediating role of belonging and tangible support in the association between religious behaviours and physical functioning as well as depression. There was no mediational role played by appraisal support, or for emotional functioning. Implications for faith-based health promotion interventions are discussed.  相似文献   
254.
This study has two goals. The first goal is to see if involvement in religion is associated with providing tangible support to family members and strangers. The second goal is to see if providing tangible support to family members and strangers is associated with well-being. A conceptual model, which was developed to address these issues, contains the following core relationships: (1) individuals who go to church more often will receive more spiritual support from coreligionists; (2) those who receive more spiritual support will provide more tangible assistance to family members and strangers; and (3) people who help family members and strangers will report greater life satisfaction and higher self-esteem. Findings from a nationwide survey support all but one of these relationships. More specifically, the results suggest that providing tangible support to family members is associated with greater well-being, but providing tangible support to strangers is not associated with well-being.  相似文献   
255.
The purpose of this study is to see how feelings of anticipated support arise in church. Anticipated support refers to the belief that coreligionists will provide assistance in the future if the need arises. This model contains the following hypothesis: (1) people who affiliate with conservative Protestant congregations will be more deeply committed to their faith, (2) individuals who are more committed to their faith will attend church more frequently, (3) people who go to church more often will be more likely to occupy church service roles, (4) those who occupy church service roles will feel more highly valued by their coreligionists, (5) individuals who feel they are valued highly by fellow church members will receive more emotional support from them, and (6) people who receive more emotional support at church will have stronger anticipated support beliefs. Data from a nationwide survey of older Mexican Americans support these hypotheses.  相似文献   
256.
The objective of this study was the investigation of travel behavioral effects of the reduction in traffic capacity resulting from the construction of the West LRT (Light Rail Transit) line in the city of Calgary, Alberta, Canada. Travelers’ responses to real-time information providing traffic updates and advisory detours due to lane/road closures were also examined. The West LRT alignment extends approximately 8.2 km from downtown into the city’s southwest. Many road closures took place in the vicinity of the LRT line construction zones, inducing significant delays to traffic. Data on travelers’ behavioral responses and responses to real-time information were obtained by conducting a survey on a sample of users of the main road affected by the construction. The survey also investigated the effects of West LRT line construction on drivers’ daily commutes, including increases in travel times, mode choices, alternate route choices, and selection of sources of information on traffic conditions. A significant change in the selection of transportation mode was caused by West LRT construction. Throughout the construction period, there was a decrease in the percentage of respondents who reported private vehicles as their first choice and an increase in the percentage of respondents who preferred public transit as their first and second choices. Radio was found to be the most preferred source for traffic updates and detour advice, followed by variable message signs (VMS). The findings of the en-route information model showed that driving experience, employment status, travel time and purpose, and desire for pre-trip information had significant effects on traveler’s rerouting decisions after getting en-route information through VMS. The results from this study are of interest for understanding behavioral changes for the purposes of traffic management, mitigation schemes and design of advanced traveler information systems in response to network disruptions.  相似文献   
257.
The aim of this study was to investigate the accuracy of the Portuguese version of Addenbrooke’s Cognitive Examination–Revised (ACE-R) in detecting and differentiating early stage subcortical vascular dementia (SVD) from early stage Alzheimer’s disease (AD). Ninety-two subjects (18 SVD patients, 36 AD patients, and 38 healthy controls) were assessed using the ACE-R. Between-group’s differences were evaluated using the Quade’s rank analysis of covariance. The diagnostic accuracy and discriminatory ability of the ACE-R were examined via receiver operating characteristic (ROC) analysis. The ACE-R was able to successfully discriminate between patients and healthy subjects. The mean ACE-R total scores differed between SVD and AD patients; there were also significant differences in attention and orientation and in memory measures between the groups. An optimal cut-off of 72/73 was found for the detection of AD (sensitivity: 97%; specificity: 92%) and SVD (sensitivity: 100%; specificity: 92%).  相似文献   
258.
ABSTRACT

Objectives: This study examined the relationship between positive and negative affect, depressive symptoms, and cognitive performance. Methods: The sample consisted of 1479 non-demented, postmenopausal women (mean age = 67 years) at increased risk of breast cancer enrolled in the National Surgical Adjuvant Breast and Bowel Project’s Study of Tamoxifen and Raloxifene. At each annual visit, women completed a standardized neuropsychological battery and self-report measures of affect and depression. Data from three visits were used in linear mixed models for repeated measures using likelihood ratio tests. Separate analyses were performed to relate positive/negative affect and depression to each cognitive measure. Results: Higher positive affect was associated with better letter fluency (p = .006) and category fluency (p < .0001). Higher negative affect was associated with worse global cognitive function (p < .0001), verbal memory (CVLT List B; p = .002), and spatial ability (p < .0001). Depressive symptoms were negatively associated with verbal knowledge (p = .004), figural memory (p < .0001), and verbal memory (p’s ≤ .0001). Discussion: Findings are consistent with some prior research demonstrating a link between positive affect and increased verbal fluency and between depressive symptoms and decreased memory. The most novel finding shows that negative affect is related to decreased global cognition and visuospatial ability. Overall, this research in a large, longitudinal sample supports the notion that positive affect is related to increases and negative affect to decreases in performance on distinct cognitive measures.  相似文献   
259.
260.
This study investigated educator-targeted bullying (ETB) in a South African school setting from a social-ecological perspective. Seven survivors of ETB were interviewed using open ended questions. The data were content analysed for themes. The main findings of the study were: (1) bullies are undisciplined individuals who lack parental support; (2) school and classroom management styles may encourage ETB; and (3) a lack of positive values in the community and a disregard for authority figures perpetuate ETB. Survivors of ETB perceived to lack support from colleagues, school management, and parents of the offending learners.  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