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   7377篇
  免费   176篇
  国内免费   1篇
管理学   990篇
民族学   33篇
人口学   760篇
丛书文集   32篇
理论方法论   662篇
综合类   90篇
社会学   3577篇
统计学   1410篇
  2023年   41篇
  2020年   97篇
  2019年   141篇
  2018年   168篇
  2017年   252篇
  2016年   178篇
  2015年   124篇
  2014年   160篇
  2013年   1302篇
  2012年   228篇
  2011年   206篇
  2010年   146篇
  2009年   134篇
  2008年   148篇
  2007年   141篇
  2006年   170篇
  2005年   152篇
  2004年   148篇
  2003年   136篇
  2002年   154篇
  2001年   164篇
  2000年   168篇
  1999年   173篇
  1998年   137篇
  1997年   133篇
  1996年   126篇
  1995年   110篇
  1994年   107篇
  1993年   110篇
  1992年   116篇
  1991年   128篇
  1990年   125篇
  1989年   144篇
  1988年   85篇
  1987年   109篇
  1986年   93篇
  1985年   114篇
  1984年   96篇
  1983年   103篇
  1982年   80篇
  1981年   81篇
  1980年   76篇
  1979年   81篇
  1978年   83篇
  1977年   60篇
  1976年   66篇
  1975年   61篇
  1974年   59篇
  1973年   48篇
  1971年   41篇
排序方式: 共有7554条查询结果,搜索用时 31 毫秒
791.
Using conflict narratives reported by adolescents in grade 7 (mean age = 13.4 years), this study investigated the interactional properties and developmental functions of four types of aggressive behaviors: social aggression, direct relational aggression, physical aggression, and verbal aggression. A total of 475 participants from the Carolina Longitudinal Study ( Cairns & Cairns, 1994 ) were included. Results showed that the majority of conflict interactions involved more than a dyad. The use of social aggression (e.g., concealed social attack) was associated with more individuals involved in the conflict. Social aggression was primarily reported as an initiating behavior for interpersonal conflicts, while direct relational aggression was a responding behavior. Medium to high levels of reciprocity were found for physical, verbal, and direct relational aggression, whereas a low level of reciprocity was reported for social aggression. School authorities were most likely to intervene in physical aggression. The use of social aggression was associated with higher network centrality among adolescents. Developmental maladjustment in late adolescence and early adulthood was primarily predicted by physical aggression.  相似文献   
792.
793.
We examined the frequency of domestic violence and verbal altercations relative to the level of domestic conflict using survey data from the United States and Korea. We found evidence that individuals are generally less likely to use violence during an altercation if the antagonist is a family member than if the antagonist is a stranger. People apparently have stronger inhibitions about hitting family members than about hitting strangers, and, as a result, domestic violence is infrequent relative to the level of domestic conflict. In addition, verbal altercations are more likely to occur in conflicts with partners and children than in conflicts involving strangers, suggesting that the relaxation of rules of politeness contributes to the expression of grievances and ultimately the use of violence in these relationships.  相似文献   
794.
Feed-forward neural networks—also known as multi-layer perceptrons—are now widely used for regression and classification. In parallel but slightly earlier, a family of methods for flexible regression and discrimination were developed in multivariate statistics, and tree-induction methods have been developed in both machine learning and statistics. We expound and compare these approaches in the context of a number of examples.  相似文献   
795.
The facial expressions of emotion and the circumstances under which the expressions occurred in a sample of the most popular children's television programs were investigated in this study. Fifteen-second randomly selected intervals from episodes of five television programs were analyzed for displays of happiness, sadness, anger, fear, disgust, and surprise. In addition, the contexts in which the emotions occurred were examined. Results indicated that particular emotional expressions occurred at significantly different frequencies and that there was an association between emotional displays and emotion-contexts. The high rate of emotional displays found in television shows has implications for the development of knowledge regarding emotional display rules in viewers.We are grateful to Sharon Galligan for assistance in coding part of the data and to Carolyn Saarni and Amy Halberstadt for helpful comments on an earlier draft of this paper. This research was supported in part by a grant from the National Institute of Disabilities and Rehabilitation Research, #GOO85351. The opinions expressed herein do not necessarily reflect the position or policy of the U.S. Department of Education.  相似文献   
796.
Objective. We examine volunteering to support the relief effort after the bombing of the Murrah Federal Building. We address two issues: (1) how widespread was volunteering and what forms did it take, and (2) does Wilson and Musick’s (1997a) “integrated theory of volunteer work” help to explain variation in volunteering in this disaster situation? Methods. We use data from the 1996 Oklahoma City Survey (OKC Survey). The 1996 OKC Survey is based on a random sample of the adult population of Oklahoma City and was administered 10 months after the bombing. Results. Nearly 75 percent of the sample respondents volunteered to support the relief effort in at least one way; giving money and donating nonprofessional goods or services were the two most prevalent volunteer activities. Socioeconomic status, knowing someone killed or injured in the bombing, belonging to voluntary organizations before the bombing, and being affiliated with a religious denomination were predictors of volunteering, depending on the type of volunteer activity considered. Conclusions. The magnitude of volunteering after the Murrah Building bombing was in line with volunteer efforts after other disasters. The integrated theory of volunteer work is a useful framework for studying volunteering after disasters.  相似文献   
797.
Data from a survey of 58 gay men and 58 lesbians are compared to college men and women on Spence and Helmreich's (1978) Personality Attributes Questionnaire measures of masculinity, femininity, and androgyny. Lesbians had higher M scores than college women, and gay men had lower M scores than college men, with F scores being similar across sexual orientation groups, within gender. Androgyny measures differed only by gender, not by sexual orientation. Further analysis shows that lesbians' high M scores come largely from their high self-ratings as independent, while college men's high M scores reflect strong competitiveness. Questions are raised about the validity of these measures for comparing these groups.  相似文献   
798.
The High Risk Adolescent Trauma Prevention Program is situated in a teaching hospital setting, where adolescents who are considered to be high risk-takers tour a shock trauma unit. Results from a pretest-posttest longitudinal evaluation design with 351 adolescent participants indicated marked changes in participants attitudes toward driving after drinking, riding with someone who has been drinking and preventing a friend from driving after drinking. These changes in attitudes are still evident, though with some decline in magnitude, after twelve months.  相似文献   
799.
THE TERMS OF TRADE AND THE INTERNATIONAL COORDINATION OF FISCAL POLICY   总被引:2,自引:0,他引:2  
This paper develops an example of a noncooperative game between fiscal authorities in two countries. The key strategic link between countries is the terms of trade. An equilibrium without cooperation is characterized by excessive tax rates and public spending levels in each country. The outcome is analogous to the Nash equilibrium of the static optimal tarif game in trade theory. But in this model there is also a dynamic distortion caused by noncooperative behaviour. This dynamic distortion depresses capital accumulation and reduces the equilibrium capital stock in each country. Numerical examples suggest a significant welfare benefit of cooperation.  相似文献   
800.
Objective. Local government officials exhibit a variety of responses to morality issues involving “decency” (i.e., pornography, prostitution, sexually explicit businesses). The purpose of this research is to account for these differences. Methods. This research analyzes a subset of data from a larger study of morality policy making at the local level, that is, all cases of decision making on decency issues (e.g., pornography, prostitution, regulation of sexually explicit businesses, etc.) that occurred in the period 1994–2000 in 10 of the 52 largest cities in the United States. Results. In mayoral settings, decision making on decency cases is likely to evoke pro‐decency action from officials when a high level of issue salience is combined with high levels of church adherence, low levels of women's political empowerment, low levels of fundamentalist religious attachment, and higher levels of per capita income. Officials in city manager settings act more favorably toward decency activists if (1) higher levels of salience combine with a lower prevalence of fundamentalist religious adherents and higher levels of per capita income or (2) there is an interaction of salience and low levels of female political empowerment and high unemployment. Conclusions. Although exploratory in nature, the results confirm conventional expectations concerning the importance of salience and the prevalence of church affiliation; the results are counterintuitive with respect to the prevalence of fundamentalist forces and the extent of female political empowerment.  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