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   2286篇
  免费   102篇
管理学   269篇
民族学   20篇
人口学   256篇
丛书文集   12篇
理论方法论   269篇
综合类   29篇
社会学   1028篇
统计学   505篇
  2023年   26篇
  2022年   7篇
  2021年   30篇
  2020年   65篇
  2019年   93篇
  2018年   113篇
  2017年   134篇
  2016年   81篇
  2015年   60篇
  2014年   77篇
  2013年   470篇
  2012年   97篇
  2011年   88篇
  2010年   75篇
  2009年   59篇
  2008年   73篇
  2007年   70篇
  2006年   69篇
  2005年   57篇
  2004年   42篇
  2003年   50篇
  2002年   44篇
  2001年   46篇
  2000年   29篇
  1999年   39篇
  1998年   23篇
  1997年   21篇
  1996年   23篇
  1995年   23篇
  1994年   23篇
  1993年   25篇
  1992年   28篇
  1991年   28篇
  1990年   10篇
  1989年   14篇
  1988年   13篇
  1987年   13篇
  1986年   8篇
  1985年   15篇
  1984年   15篇
  1983年   13篇
  1982年   10篇
  1981年   17篇
  1980年   10篇
  1979年   10篇
  1978年   6篇
  1976年   5篇
  1975年   9篇
  1974年   9篇
  1964年   4篇
排序方式: 共有2388条查询结果,搜索用时 609 毫秒
951.
Many parents believe that spanking is an effective way to promote children's positive behavior, yet few studies have examined spanking and the development of social competence. Using information from 3,279 families with young children who participated in a longitudinal study of urban families, this study tested competing hypotheses regarding whether maternal spanking or maternal warmth predicted increased social competence and decreased child aggression over time and which parent behavior was a stronger predictor of these changes. The frequency of maternal spanking was unrelated to maternal warmth. Findings from cross‐lagged path models indicated that spanking was not associated with children's social competence, but spanking predicted increases in child aggression. Conversely, maternal warmth predicted children's greater social competence but was not associated with aggression. Warmth was a significantly stronger predictor of children's social competence than spanking, suggesting that warmth may be a more effective way to promote children's social competence than spanking.  相似文献   
952.
A sizable body of literature reports that social capital, derived from relational resources embedded in micro social contexts, is crucial for student achievement. This study aimed to examine whether this applies as well to socioeconomically disadvantaged immigrant adolescents in the US. In so doing, the study first identified the types of relational features that were strongly associated with immigrant adolescents’ academic achievement, before exploring how high- and low-achieving immigrant adolescents coming from similarly socioeconomically disadvantaged backgrounds differed in terms of these relational features. To this end, the study used the dataset of the Children of Immigrants Longitudinal Study (CILS). There was a significantly positive association found between academic achievement and a number of positive characteristics of social relationships with friends and teachers. In addition, a significant disparity in these relational features was found between high and low achievers among the socioeconomically disadvantaged. The findings illuminate the salience of peer contexts and of interpersonal trust in shaping immigrant adolescents’ educational outcomes in a way that transcends socioeconomic boundaries. It is pertinent for educators and policy-makers to empower immigrant youth as independent agents capable of generating academically relevant social capital on their own outside their families and ethnic communities.  相似文献   
953.

This paper examines the relief work of a faith-based organization (FBO)—Tzu-Chi (Buddhist Tzu-Chi Compassion Relief Organization) in China as a response to the Malaysia Airlines MH370 incident. The study first shows that crises facilitate a synergetic relationship of co-production for social services among states, corporate enterprises, and FBOs. FBOs deliver services that states and corporate enterprises cannot easily provide. This case-study shows how a FBO derives strength from its transnational networks, moral teachings, and compliant political attitude toward the government. The findings underscore the lack of discussion on FBOs in the Chinese civil society literature. Furthermore, they contribute to the understanding of how FBOs may benefit state welfare provisions following a 2012 policy shift in which religion was encouraged to participate in social provision.

  相似文献   
954.
Assessing sexual risk is critical for human immunodeficiency virus (HIV) and sexually transmitted infection (STI) prevention with adolescents. This article compares sexual risk reports from two self-administered instruments, a standard survey and a sexual health history calendar (SHHC), among racially diverse youth (n = 232) ages 14 to 21 seeking services at a public health clinic. Agreement between methods was assessed using Lin's concordance correlation coefficients (CCC) and Bland-Altman plots. Lin's CCC showed poor to moderate agreement between instruments on reports of sexual partners in the past 3 (0.47), 6 (0.55), and 12 (0.49) months. While individual sexual partner questions were refused a total of 179 times on the survey, youth reported having sexual partners during the same time period on the SHHC in most (77.1%) of these instances. Poor agreement was also found for condom use frequency (CCC = 0.17), with youth's frequency of condom use on the SHHC differing from that reported on the survey for more than half (55.6%) of the months they were sexually active. While lack of objective sexual behavior measures limits conclusions about the accuracy of reports, the ways in which youth's responses varied across instruments may offer insight into the complexity of adolescent sexual risk taking as well as have important implications for development of HIV/STI preventive interventions.  相似文献   
955.
This study examined the association of the children's entry age and enrollment duration of Head Start on children's mental health, using secondary data analysis. Children were of three groups: one group of children entered Head Start at age 3 and maintained enrollment for 1 year (Group 1), the second group of children entered Head Start at age 4 and stayed for 1 year (Group 2) and the third group of children entered at age 3 and stayed in Head Start for 2 years (Group 3). Research questions are (1) Do child and family characteristics have any association with mental health scores? (2) Do children's mental health scores differ among the three groups? Compared with children who entered at age 4 and stayed for 1 year, children who entered Head Start at age 3 and stayed in Head Start both for 1 year and for 2 years had higher mental health scores. Controlling for other factors, boys and children with special needs had higher mental health scores. Black and dual bilingual children had lower mental health scores.  相似文献   
956.
This study examined how college students’ levels of planned happenstance skills influenced the relationships among career engagement, career decision self‐efficacy, and career decision certainty. Moderated mediation analysis was used with a sample of 217 Korean undergraduate students. The results indicated that career decision self‐efficacy mediated the relationship between career engagement and career decision certainty. Moreover, the positive indirect effect of career engagement on career decision through career decision self‐efficacy was strengthened as the level of planned happenstance skills increased. In conclusion, college students’ career engagement strengthens their career decision certainty via career decision self‐efficacy when they have enough planned happenstance skills to discover unexpected career opportunities.  相似文献   
957.
This study was conducted to develop and initially evaluate the psychometric properties of the Planned Happenstance Career Inventory (PHCI), which aims to assess skill in using chance events to develop career opportunities. After item generation and exploratory factor analysis, 130 original items were reduced to 25 items across 5 factors (5 items for each corresponding factor). Multigroup confirmatory factor analysis confirmed the validity of this 5‐factor structure, and the goodness of fit showed an adequate fit to the observed data for both women and men. Results showed that PHCI subscales correlated moderately and in expected directions with career preparation, career decision‐making self‐efficacy, and career stress. These findings suggest that the PHCI, which assesses 5 dimensions of career‐related planned happenstance skill, shows promise as a useful tool for facilitating understanding of the influence of chance events on career choice behavior.  相似文献   
958.
In recent decades, the emergence and development of pan-European civil society organisations have been prominent, including those representing interests of marginalised groups and raising related social issues. Typically composed of national and European level umbrella organisations, some of these organisations have grown as important interlocutors between EU institutions and civil society, and derive legitimacy for their advocacy and lobbying activities by claiming broad representativeness. Through a comparative study of five principal EU-based civil society organisations, the present article analyses how these organisations, operating at multiple levels with their membership based on extensive geographical areas, acquire internal representation of members and beneficiaries.  相似文献   
959.
Both “welfare culture” arguments and structural explanations of poverty suggest that attitudes may have an effect on work and welfare outcomes. However, most scholars only examine objective behaviors and characteristics despite the fact that values are an underlying mechanism in explanations of the transmission of welfare and work behavior. Using data from a survey of recent welfare recipients in Louisiana and structural equation methods, we analyze causal relationships among family background, socioeconomic characteristics, attitudes, and two outcomes—TANF participation and employment. We find some support for the intergenerational transmission of welfare but not through values; we find no evidence that under the TANF system, values inhibit work.  相似文献   
960.
This paper presents an interactive fuzzy goal programming approach to determine the preferred compromise solution for the multi-objective transportation problem. The proposed approach considers the imprecise nature of the input data by implementing the minimum operator and also assumes that each objective function has a fuzzy goal. The approach focuses on minimizing the worst upper bound to obtain an efficient solution which is close to the best lower bound of each objective function. The solution procedure controls the search direction via updating both the membership values and the aspiration levels. An important characteristic of the approach is that the decision maker's role is concentrated only in evaluating the efficient solution to limit the influences of his/her incomplete knowledge about the problem domain. In addition, the proposed approach can be applied to solve other multi-objective decision making problems. The performance of this solution approach is evaluated by comparing its results with that of the two existing methods in the literature.  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