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   844篇
  免费   50篇
各国政治   79篇
工人农民   67篇
世界政治   78篇
外交国际关系   58篇
法律   407篇
中国共产党   2篇
中国政治   11篇
政治理论   186篇
综合类   6篇
  2023年   14篇
  2022年   11篇
  2021年   11篇
  2020年   30篇
  2019年   39篇
  2018年   57篇
  2017年   50篇
  2016年   47篇
  2015年   33篇
  2014年   29篇
  2013年   133篇
  2012年   41篇
  2011年   36篇
  2010年   39篇
  2009年   34篇
  2008年   22篇
  2007年   32篇
  2006年   34篇
  2005年   38篇
  2004年   20篇
  2003年   26篇
  2002年   21篇
  2001年   14篇
  2000年   8篇
  1999年   3篇
  1998年   4篇
  1997年   2篇
  1996年   3篇
  1995年   4篇
  1994年   6篇
  1993年   8篇
  1992年   4篇
  1991年   2篇
  1990年   8篇
  1989年   3篇
  1988年   2篇
  1987年   5篇
  1985年   3篇
  1984年   4篇
  1983年   5篇
  1982年   2篇
  1981年   1篇
  1980年   1篇
  1979年   2篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
排序方式: 共有894条查询结果,搜索用时 31 毫秒
711.
This study was undertaken to develop and validate an instrument for gerontological policymakers, practitioners, and researchers to comprehensively assess the nature and severity of problems experienced by older adults. The Comprehensive Ageing Problem Scale (CAPS) for older adults living in the community was created as a reliable and valid instrument that is easy to use. A cross-sectional strategy was utilized, in which a total sample of 1060 older South Korean adults was selected (through a proportionate random-stratified sampling method) from four regions nationwide. The psychometric properties of the instrument were verified using item analysis, exploratory factor analysis (EFA), and confirmatory factor analysis (CFA). To achieve cross-validity, the total sample was randomly divided into two groups. The first group (for the EFA) was employed to identify the factor structure of the initial scale. The second group (for the CFA) was used to confirm the factor structure of the revised scale with the first group. The final version of the 19-item CAPS with four factors showed good internal consistency and a CFA confirmed the acceptability of the model fit.  相似文献   
712.
Eating problems are highly prevalent and seem to show continuity in children. Nevertheless, the effect of different maternal and paternal feeding practices on changes in these problems is not fully understood yet. This study examines short-term continuity in primary school children’s overeating, loss of control (over eating), restraint and concerns (about eating, body shape and weight) and the predictive value of parental feeding strategies on change in these eating problems. Children (8–12 years, n = 613, 46.5 % girls) completed the Child Eating Disorder Examination Questionnaire (ChEDE-Q) twice with the second measurement (T2) taking place 6 months after the first (T1). Parents (n = 714, 57.7 % mothers) completed the Child Feeding Questionnaire (CFQ) at T1 to assess the level of controlling feeding strategies. More overeating, restraint and concerns at T1 predicted higher levels of the same eating problems 6 months later, whereas more of loss of control at T1 predicted lower levels of loss of control 6 months later. Additionally, the interaction between maternal pressure and the gender of the child was predictive for increases in overeating, whereas the interaction between paternal monitoring and gender of the child was a marginally significant predictor for decreases in overeating. These findings point to the possible negative and positive effects of parental feeding practices as well as to the possible larger influence of mothers on their daughters’ and of fathers on their sons’ eating behaviors. The importance of studying mothers and fathers, as well as daughters and sons, and of including different feeding strategies and eating problems is discussed.  相似文献   
713.
The substantial number of young people in romantic relationships that involve intimate partner violence, a situation deleterious to physical and mental health, has resulted in increased attention to understanding the links between risk factors and course of violence. The current study examined couples’ interpersonal stress related to not liking partners’ friends and not getting along with parents as contextual factors associated with couples’ psychological partner violence and determined whether and when couples’ friend and parent stress increased the likelihood of couples’ psychological partner violence. A linear latent growth curve modeling approach was used with multiwave measures of psychological partner violence, friend stress, parent stress, and relationship satisfaction obtained from 196 men at risk for delinquency and their women partners over a 12-year period. At the initial assessment, on average, the men were age 21.5 years and the women were age 21 years. Findings indicated that couples experiencing high levels of friend and parent stress were more likely to engage in high levels of psychological partner violence and that increases in couples’ friend stress predicted increases in couples’ partner violence over time, even when accounting for the couples’ relationship satisfaction, marital status, children in the home, and financial strain. Interactive effects were at play when the couples were in their early 20s, with couples being most at risk for increases in psychological partner violence if they experienced both high friend stress and low relationship satisfaction. Couples’ friend stress had the greatest effect on psychological partner violence when the couples were in their early to mid 20s when levels of friend stress were high. As the couples reached their 30s, low relationship satisfaction became the leading predictor of couples’ psychological partner violence.  相似文献   
714.
Serious youthful offenders are presented with a number of significant challenges when trying to make a successful transition from adolescence to adulthood. One of the biggest obstacles for these youth to overcome concerns their ability to desist from further antisocial behavior, and although an emerging body of research has documented important risk and protective factors associated with desistance, the importance of the neighborhoods within which these youth reside has been understudied. Guided by the larger neighborhood effects on crime literature, the current study examines the direct and indirect effects of concentrated disadvantage on youth reoffending among a sample of highly mobile, serious youthful offenders. We use data from Pathways to Desistance, a longitudinal study of serious youthful offenders (N = 1,354; 13.6 % female; 41.4 % African American, 33.5 % Hispanic, 20.2 % White), matched up with 2000 Census data on neighborhood conditions for youth’s main residence location during waves 7 and 8 of the study. These waves represent the time period in which youth are navigating the transition to adulthood (aged 18–22; average age = 20). We estimate structural equation models to determine direct effects of concentrated disadvantage on youth reoffending and also to examine the possible indirect effects working through individual-level mechanisms as specified by theoretical perspectives including social control (e.g., unsupervised peer activities), strain (e.g., exposure to violence), and learning (e.g., exposure to antisocial peers). Additionally, we estimate models that take into account the impact that a change in neighborhood conditions may have on the behavior of youth who move to new residences during the study period. Our results show that concentrated disadvantage is indirectly associated with youth reoffending primarily through its association with exposure to deviant peers. Taking into account youth mobility during the study period produced an additional indirect pathway by which concentrated disadvantage is associated with goal blockage (i.e., the gap between belief in conventional goals and perceived potential to reach those goals), which was then associated with exposure to deviant peers and indirectly, reoffending behavior. We conclude that the neighborhood effects literature offers a promising framework for continued research on understanding the successful transition to adulthood by serious youthful offenders.  相似文献   
715.
716.
717.
718.
719.
A burgeoning body of research documents links between sleep and adjustment in adolescence, but little is known about the role of the social ecology in promoting healthful sleeping habits. This study was aimed at identifying the socio-cultural correlates of adolescents’ sleep, including average nighttime sleep duration, average daytime napping, and night-to-night variability in sleep duration and assessing the links between these dimensions of sleep and adjustment in Mexican-American youth. Participants were 469 Mexican-American adolescents (50.5% female) and their mothers and fathers. Data on family socio-cultural characteristics and youth adjustment were collected in home interviews with youth, mothers, and fathers, and, during 7 evening telephone interviews, adolescents reported on nighttime sleep and daytime napping for the prior 24-h period. Night-to night variability and napping were more strongly linked to youth depressive symptoms and risky behavior than was average nighttime sleep, whereas nighttime sleep predicted lower body mass index. Lower parental acculturation and fathers’ familism values predicted more healthful sleep, and higher levels of family income, parental education and neighborhood crime predicted less healthful sleep. In addition to illuminating the significance of socio-cultural influences on youths’ sleep, this study contributes to the literature by documenting the multidimensionality of sleep patterns and their links with adjustment in an understudied population.  相似文献   
720.
As public service motivation research grows qualitatively and quantitatively, some scholars question its appropriateness for international applications. This essay sets out a strategy of convergence for international research and measurement approaches. Studies that assess commonalities in public service motivation content internationally are analyzed in order to develop a broader conceptual and more operational definition as well as consequently a more universal public service motivation construct. Public service motives, according to this review, are based on self‐sacrifice and fall into three categories: instrumental, value‐based, and identification. The dimensions of the public service motivation construct are refined along the lines of attraction to public participation, commitment to public values, compassion, and self‐sacrifice. Researchers are urged to include all of its dimensions within their empirical studies to advance contemporary public service motivation studies.  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