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   20639篇
  免费   448篇
  国内免费   1篇
管理学   2738篇
民族学   116篇
人才学   3篇
人口学   1790篇
丛书文集   80篇
教育普及   1篇
理论方法论   1838篇
综合类   189篇
社会学   10445篇
统计学   3888篇
  2023年   151篇
  2022年   99篇
  2021年   157篇
  2020年   378篇
  2019年   531篇
  2018年   633篇
  2017年   816篇
  2016年   630篇
  2015年   430篇
  2014年   593篇
  2013年   3654篇
  2012年   770篇
  2011年   718篇
  2010年   532篇
  2009年   429篇
  2008年   560篇
  2007年   522篇
  2006年   552篇
  2005年   432篇
  2004年   442篇
  2003年   366篇
  2002年   389篇
  2001年   483篇
  2000年   429篇
  1999年   421篇
  1998年   333篇
  1997年   268篇
  1996年   294篇
  1995年   301篇
  1994年   255篇
  1993年   272篇
  1992年   317篇
  1991年   307篇
  1990年   299篇
  1989年   263篇
  1988年   245篇
  1987年   210篇
  1986年   234篇
  1985年   254篇
  1984年   222篇
  1983年   199篇
  1982年   163篇
  1981年   140篇
  1980年   160篇
  1979年   172篇
  1978年   136篇
  1977年   116篇
  1976年   90篇
  1975年   94篇
  1974年   94篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
211.
In the current study, we used a qualitative approach to investigate relevant beliefs and norms associated with codeine and promethazine hydrochloride cough syrup (CPHCS) consumption, initiation, and perceived addiction among 48 alternative school students who identified themselves as current CPHCS users. In general, both boys and girls believed that CPHCS addiction started during an individual's initial consumption. A majority of both groups reported that their second CPHCS event was initiated during the same or next day after their first event. Our findings suggest that friends and an innovative form of hip-hop music called "screw" are strong reinforcers of CPHCS use.  相似文献   
212.
Social science research has recently begun to focus on stalking and other forms of intrusive contact occurring among adolescents and young adults. This article presents results from a survey of 681 undergraduates about their experiences with stalking or other forms of intrusive contact occurring after the end of a dating or romantic relationship. Twenty percent of the respondents had been the target of intrusive contact, 8% had initiated intrusive contact, and 1% had been the target of intrusive contact after one relationship and had initiated intrusive contact after another. More females than males were the target of intrusive contact; however, there were no sex differences associated with initiating intrusive contact. About 20% of the respondents had feared for their safety during the intrusive contact. Thirty-one percent of the respondents described the intrusive contact as having a decidedly negative influence on either their subsequent dating relationships or their lives in general.  相似文献   
213.
A substantial share of the low-income older tenants who occupy U. S. government-subsidized rental housing has physical and cognitive limitations. These older tenants are often women living alone in their 70s and 80s, who need help obtaining community-based services, demand-responsive transportation, help with apartment housekeeping and maintenance, self-care assistance, and design modifications made to their dwellings. Other low-income and frail older persons who have large housing expense burdens or occupy physically deficient dwellings also need affordable rental housing with these supportive services. The unmet supportive service needs of these groups persist even as this country's major political and professional stakeholders are aware of their problems and have solutions. This paper examines five major political and organizational barriers that have restricted the availability of supportive services in affordable rental developments. It offers 12 policy recommendations.  相似文献   
214.
The authors examined the roles of depression and attachment to fathers in college women's eating dysfunctions. Three-hundred six undergraduate women completed (1) a diagnostic measure of eating dysfunctions that categorized them as asymptomatic, symptomatic but not eating disordered, or eating disordered; (2) 3 dimensional measures of attachment to fathers; and (3) a dimensional measure of depression. Depression was directly related to severity of participants' eating dysfunction; the eating-disordered group had scores consistent with clinical depression. After controlling for depression, 3 facets of attachment to fathers significantly differentiated the 3 groups.  相似文献   
215.
This article examines adult respondents' abuse of children as a consequence of their own childhood experiences of abuse, both direct experiences of childhood violence (hitting) and exposure to interparental violence (witnessing). In particular, the study examines the extent to which these factors function interactively: Are both experience and exposure necessary or is either sufficient to increase disproportionately the probability of child abuse? Using data from the Second National Family Violence Survey, results of a logistic regression analysis show that either or both factors produced higher than average and relatively similar rates of child abuse. Only respondents with neither form of family violence reported lower than average rates of abuse of their own children. The analysis controlled for gender, race, family income, and family structure; race was the only control variable to be significantly associated with child abuse. Finally, no control variable modified the interaction between the family violence variables.  相似文献   
216.
While there is a general consensus in the literature that it is common for youth to gamble, considerable variability in the reported prevalence rates of youth problem gambling has been found. More recently, issues concerning the possible overestimation of these rates have been raised. Arguments underlying the proposition that problem gambling rates for youth are inflated are examined. It is acknowledged that more rigorous research is required, including the need for the development and refinement of current adolescent instruments and screening tools, agreement upon a gold standard criterion for adolescent problem gambling, and clarity of nomenclature issues. The advancement of scientific knowledge concerning the underlying risk factors associated with the onset and course of youth gambling involvement and the role of effective adolescent prevention and treatment programs will require these fundamental research questions to be addressed.  相似文献   
217.
The article examines issues involved in comparing groups and measuring change with pretest and posttest data. Different pretest-posttest designs are presented in a manner that can help rehabilitation professionals to better understand and determine effects resulting from selected interventions. The reliability of gain scores in pretest-posttest measurement is also discussed in the context of rehabilitation research and practice.  相似文献   
218.
219.
The purpose of this study was to assess the prevalence of sexual abuse, including multiple victimizations, among adolescents and to examine associations among history of sexual abuse, disordered eating behaviors and psychological health. The sample included 81,247 students (40,946 girls and 40,301 boys) in 9th and 12th grade in Minnesota public schools. Sexual abuse was reported by 14.7% of girls and 6.2% of boys. Sexual abuse was associated with unhealthy eating behaviors, suicidal thoughts and attempts, and lower emotional well-being and self-esteem. Students who reported a single or multiple forms of sexual abuse were more likely than their non-abused peers to binge-eat (Odds Ratio: girls = 1.93-2.32; boys = 2.26-5.61), fast (OR: girls = 1.68-2.34; boys = 1.33-2.32), use diet pills (OR: girls = 1.50-4.30; boys = 2.99-17.29) or laxatives (OR: girls = 1.87-5.11; boys = 3.89-29.22), vomit (OR: girls = 1.75-4.06; boys = 2.82-24.16), and have suicidal thoughts/attempts (OR: girls = 3.01-6.12; boys = 3.35-9.46). Boys and girls reporting multiple sexual victimizations and had the highest odds ratios for disordered eating behaviors. Future research should explore strategies for primary prevention of revictimization and secondary prevention of detrimental effects of abuse.  相似文献   
220.
Intercultural education is often assumed to lead to more tolerance towards other cultures. It may also entail an acculturation process that will lead to more cultural homogeneity. The European School system provides an interesting experiment in intercultural and multilingual education, which can help us answer these questions. A value survey among European Schools alumni showed that a "European School effect" does indeed seem to exist. Students staying longer at a European School and entering the European Schools system at a younger age form a somewhat more culturally homogenous group. There are also strong indications that European Schools' alumni are much more tolerant towards people from other nations and cultures than their average compatriots. However, it is not completely possible to rule out the possibility that this is caused by a sampling effect.  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