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   3375篇
  免费   308篇
  国内免费   980篇
  2024年   5篇
  2023年   59篇
  2022年   64篇
  2021年   103篇
  2020年   130篇
  2019年   119篇
  2018年   135篇
  2017年   132篇
  2016年   144篇
  2015年   99篇
  2014年   104篇
  2013年   281篇
  2012年   175篇
  2011年   246篇
  2010年   206篇
  2009年   202篇
  2008年   347篇
  2007年   293篇
  2006年   254篇
  2005年   306篇
  2004年   243篇
  2003年   131篇
  2002年   77篇
  2001年   70篇
  2000年   48篇
  1999年   53篇
  1998年   44篇
  1997年   30篇
  1996年   20篇
  1995年   26篇
  1994年   24篇
  1993年   39篇
  1992年   45篇
  1991年   34篇
  1990年   43篇
  1989年   39篇
  1988年   29篇
  1987年   32篇
  1986年   31篇
  1985年   11篇
  1984年   41篇
  1983年   9篇
  1982年   30篇
  1981年   14篇
  1980年   28篇
  1979年   18篇
  1975年   6篇
  1972年   5篇
  1971年   7篇
  1959年   6篇
排序方式: 共有4663条查询结果,搜索用时 31 毫秒
221.
为探讨城镇化进程中离乡农民的心理健康特点以及心理素质、相对剥夺感对其的影响,通过量表对1339名城乡居民进行调查。结果发现:离乡与留乡农民在幸福感、拥有生命意义感、感知控制感、心理素质方面显著低于城镇居民,在状态焦虑方面显著高于城镇居民; 离乡农民在抑郁上显著高于城镇居民,在感知控制感上显著高于留乡农民,在心理素质上显著低于留乡农民; 留乡农民在相对剥夺感上显著高于城镇居民; 离乡农民的幸福感、拥有生命意义感、感知控制感态与相对剥夺感呈显著负相关,与心理素质呈显著正相关; 离乡农民的抑郁、状态焦虑与相对剥夺感呈显著正相关,与心理素质呈显著负相关; 离乡农民的相对剥夺感与心理素质之间呈显著负相关。心理素质除了可以直接预测心理健康各项指标,还可以通过相对剥夺感的中介作用,间接预测幸福感、抑郁及状态焦虑。提升心理素质和降低相对剥夺感是离乡农民心理健康服务的重要切入点。  相似文献   
222.
Journal of Child and Family Studies - In this study, we examined the relationship continuity between parent–child relationships and friendships. Based on the theoretical framework of the...  相似文献   
223.
Xu  Xiaofeng  Nie  Qingqing  Liu  Wang  Huebner  E. Scott  Tian  Lili 《Journal of Happiness Studies》2022,23(6):2805-2826

Life satisfaction is a key indicator of children’s healthy development. Although the developmental changes of life satisfaction during adolescence have been investigated, the developmental trajectories of life satisfaction and related predictors during childhood remain unclear. Thus, the current study aimed to identify the developmental trajectories of life satisfaction covering the period from middle to late childhood as well as to examine the predictive roles of environmental factors (i.e., family dysfunction and basic psychological needs satisfaction at school), personality factors (i.e., neuroticism and extraversion), and their interactions in these developmental trajectories. An accelerated longitudinal design was used with Chinese elementary school students (N?=?1069, 45.8% girls, M age?=?9.43, SD?=?0.95) of 3 cohorts (grade 3, grade 4, and grade 5) on 4 occasions at 6-month intervals. Growth mixture modeling analyses revealed three distinct trajectories of life satisfaction: “High-Stable” (88.8%), “High-Decreasing” (6.8%), and “Low-Increasing” (4.4%). Multivariate logistic regression analyses revealed that family dysfunction and neuroticism served as risk factors for adverse developmental trajectories of life satisfaction; whereas basic psychological needs satisfaction at school served as a protective factor. Furthermore, the interaction between family dysfunction and extraversion suggested that higher levels of extraversion buffered children against the negative effect of family dysfunction on the development of life satisfaction. The identification of three heterogeneous trajectory groups of children’s life satisfaction and key personality and environmental predictors associated with the trajectories suggests that specific interventions need to be tailored to the unique characteristics of the relevant trajectory groups.

  相似文献   
224.
Zhang  Qiongwen  Pan  Yangu  Chen  Yanghong  Liu  Wei  Wang  Li  Jean  Jason A. 《Applied research in quality of life》2022,17(5):2657-2672

Parent–adolescent relationships play an important role in protecting adolescents from depressive symptoms. However, there are no consistent conclusions about the extent to which fathers and mothers uniquely contribute to adolescents’ depressive symptoms. The present study aimed to acquire knowledge in this research area in two ways. First, this study separated the potential impacts of father–child and mother–child relationships on depressive symptoms in Chinese adolescents. Second, this study used a longitudinal design with nationally representative samples from the China Education Panel Survey. A total of 8794 middle school students in grade 7 completed measures of father–adolescent and mother–adolescent relationships, and depressive symptoms twice (T1 and T2; one-year interval). Results indicated that both positive father–adolescent and mother–adolescent relationships had negative effects on depressive symptoms in female adolescents. However, positive father-adolescent, not mother-adolescent, relationships had a negative effect on depressive symptoms in male adolescents. These findings suggest that positive parent–adolescent relationships could reduce early adolescents’ depressive symptoms, but positive father–adolescent and mother–adolescent relationships might have different protective effects on early adolescents’ depressive symptoms among male and female adolescents in China.

  相似文献   
225.
We investigated the role of three beliefs in predicting teachers’ motivating style toward students—namely, how effective, how normative, and how easy-to-implement autonomy-supportive and controlling teaching were each believed to be. We further examined national collectivism–individualism as a predictor of individual teachers’ motivating style and beliefs about motivating style, as we expected that a collectivistic perspective would tend teachers toward the controlling style and toward positive beliefs about that style. Participants were 815 full-time PreK-12 public school teachers from eight different nations that varied in collectivism–individualism. All three teacher beliefs explained independent and substantial variance in teachers’ self-described motivating styles. Believed effectiveness was a particularly strong predictor of self-described motivating style. Collectivism–individualism predicted which teachers were most likely to self-describe a controlling motivating style, and a mediation analysis showed that teachers in collectivistic nations self-described a controlling style because they believed it to be culturally normative classroom practice. These findings enhance the literature on the antecedents of teachers’ motivating styles by showing that teacher beliefs strongly predict motivating style, and that culture informs one of these beliefs—namely, normalcy.  相似文献   
226.
Previous research has demonstrated the association between family functioning and depression. This study evaluated family functioning and perceived social support in men and women in Shanghai who had received a diagnosis of a major depressive disorder (N = 100), including sixty-six women and thirty-four men. The relationship between family functioning and social support of outpatients with major depressive disorders was explored using the Chinese Family Assessment Device and the Multidimensional Scale of Perceived Social Support. The scores from all dimensions of family functioning for both men and women indicated that depressed men and women all reported experiencing unhealthy family functioning. The clinical implications of these findings for the developing practice of family therapy in China are discussed.  相似文献   
227.
A robust vision-based staircase identification method is proposed, which comprises 2D staircase detection and 3D staircase localization. The 2D detector pre-screens the input image, and the 3D localization algorithm continues the task of retrieving geometry of the staircase on the reported region in the image. A novel set of principal component analysis-based Haar-like features are introduced, which extends the classical Haar-like features from local to global domain and are extremely efficient at rejecting non-object regions for the early stages of the cascade, and the Viola–Jones rapid object detection framework is improved to adapt the context of staircase detection, modifications have been made on the scanning scheme, multiple detections integrating scheme and the final detection evaluation metrics. The V-disparity concept is applied to detect the planar regions on the staircase surface and locate 3D planes quickly from disparity maps, and then, the 3D position of staircase is localized robustly. Finally, experiments show the performance of the proposed method.  相似文献   
228.
Personality traits are associated with major adverse coronary events (MACE) in patients with coronary artery disease (CAD). However, the link between personality traits and intravascular morphology in CAD patients is poorly understood. This study investigated the relationship between personality traits, specifically Type A behavior pattern and Type D personality, and plaque vulnerability. After adjustment for demographic and clinical factors, multivariable regression analysis showed no association between Type A and optical coherence tomography indices. However, Type D personality was independently associated with lipid plaque, thin cap fibroatheroma (TCFA), and fibrous cap thickness. More specifically, negative affectivity of Type D was related to lipid plaque, TCFA and fibrous cap thickness, and social inhibition was associated with plaque rupture. Our results show that Type D personality was associated with plaque vulnerability, independent of clinical factors. Measurement of negative affectivity and social inhibition will increase our understanding of the progressive phase of the plaque vulnerability, which can contribute to the early identification of high risk patients and reduce the incidence of MACE.  相似文献   
229.
230.
Although considerable research has been conducted on consumer attitude towards foreign products, most of these studies focus on the attitude of products from Western developed countries. Our study intends to investigate the effects of consumers' national identification and culture sensitivity on their perceived risk of buying products from Eastern developing countries. Especially, this study advances the literature by identifying the mediation effect of consumer ethnocentrism and the moderating effect of consumer value consciousness. Taking China and India as focal emerging economies, the consumer survey (n = 308) in the United Kingdom produced the following results. First, U.K. consumers' national identification is positively related to their perceived risk of buying Eastern products through consumer ethnocentrism, whereas their cultural sensitivity has a negative relationship. Second, the effect of consumer ethnocentrism on the perceived risk of buying Eastern products is moderated by consumer value consciousness. Third, value consciousness also attenuates the indirect relationships between national identification or cultural sensitivity and perceived risk via consumer ethnocentrism.  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