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   2320篇
  免费   2篇
  国内免费   1篇
管理学   152篇
民族学   40篇
人口学   265篇
丛书文集   56篇
教育普及   1篇
理论方法论   320篇
综合类   115篇
社会学   1263篇
统计学   111篇
  2017年   4篇
  2015年   2篇
  2014年   3篇
  2013年   2篇
  2012年   320篇
  2011年   258篇
  2010年   90篇
  2009年   28篇
  2008年   134篇
  2007年   146篇
  2006年   135篇
  2005年   122篇
  2004年   106篇
  2003年   80篇
  2002年   109篇
  2001年   59篇
  2000年   65篇
  1999年   50篇
  1998年   27篇
  1997年   29篇
  1996年   31篇
  1995年   17篇
  1994年   28篇
  1993年   34篇
  1992年   44篇
  1991年   49篇
  1990年   22篇
  1989年   28篇
  1988年   21篇
  1987年   27篇
  1986年   29篇
  1985年   21篇
  1984年   35篇
  1983年   26篇
  1982年   24篇
  1981年   31篇
  1980年   18篇
  1979年   10篇
  1978年   11篇
  1977年   8篇
  1976年   4篇
  1974年   4篇
  1973年   3篇
  1972年   2篇
  1969年   2篇
  1968年   2篇
  1967年   2篇
  1959年   2篇
  1955年   3篇
  1948年   2篇
排序方式: 共有2323条查询结果,搜索用时 15 毫秒
131.
We draw on collective efficacy theory to extend a contextual model of early adolescent sexual behavior. Specifically, we hypothesize that neighborhood structural disadvantage--as measured by levels of concentrated poverty, residential instability, and aspects of immigrant concentration--and diminished collective efficacy have consequences for the prevalence of early adolescent multiple sexual partnering. Findings from random effects multinomial logistic regression models of the number of sexual partners among a sample of youth, age 11 to 16, from the Project on Human Development in Chicago Neighborhoods (N = 768) reveal evidence of neighborhood effects on adolescent higher-risk sexual activity. Collective efficacy is negatively associated with having two or more sexual partners versus one (but not zero versus one) sexual partner. The effect of collective efficacy is dependent upon age: The regulatory effect of collective efficacy increases for older adolescents.  相似文献   
132.
The use of deception in association with sexual encounters may take many forms, ranging from outright lies to more subtle, evasive manipulations. To address such deceptions, a behavior-based sexual deception scale was developed utilizing social exchange theory. Participants were 267 individuals associated with two large universities who were surveyed regarding different aspects of their sexual deceptive behaviors. In addition, items addressing sexually related behaviors and attitudes were assessed for validation purposes. Principal components analysis identified three components of sexual deception, labeled Blatant Lying, Self-Serving, and Avoiding Confrontation. Confirmatory factor analysis verified the resulting structure, and promising validity was noted. In general, those using any of these deceptions reported more sexual partners and one-night stands. Those telling blatant lies to have sex were more likely to report greater needs for sex, while those using self-serving lies or having sex to avoid confrontation experienced greater worry about partner loss. Men were more likely to use blatant lies to have sex, while women were more likely to have sex to avoid confrontation. Results support sexual deception as an exchange process, with sex for pleasure and positive relationship outcomes acting as rewards, and unwanted sex and deception consequences as costs. Implications for health interventions and primary prevention applications are discussed.  相似文献   
133.
Gay and bisexual men carry the burden of HIV infections in the United States and have high rates of childhood sexual abuse that predict HIV and other health outcomes. This study examined differential effects of forced, consensual, and no childhood sexual experiences (CSE) on health outcomes among a probability sample of adult men who have sex with men (MSM). The forced sex group had the highest levels of psychological distress, substance use, and HIV risk. There were no differences in rates of depression and suicidal ideation between the consensual- and no-sex groups. The consensual- and forced-sex groups had higher rates of substance use and transmission risk than the no-sex group. The forced-sex group, however, had significantly higher rates of frequent drug use and high-risk sex than the consensual group. Findings suggest that forced CSEs result in a higher-risk profile than consensual or no childhood sexual experiences, the kind of risk pattern differs between forced and consensual childhood sexual experiences, and the underlying mechanisms that maintain risk patterns may vary. It is important to clarify risk patterns and mechanisms that maintain them differentially for forced and consensual sex groups so that interventions may be tailored to the specific trajectories related to each experience.  相似文献   
134.
The adult day services (ADS) industry continues to grow and develop in providing care to larger numbers of older adults and their caregivers. Despite the growth in the number of programs and the changes in the way services are delivered, a systematic examination of the development of the ADS industry from a policy perspective has not been published since the mid-1990s. This article provides an analysis of the development of the ADS industry using the resource dependence model within a values-based context to determine whether public reimbursement opportunities are congruent with the needs of older adults and caregivers. Potential directions for the future development of the industry are presented through analysis of the collaborations of adult day providers with the providers of other services for older adults and the effort by public and private funders to connect quality outcomes and resources.  相似文献   
135.
OBJECTIVE: A campus-community partnership can be an effective vehicle for launching environmental strategies to prevent college alcohol-related problems. In this study, the authors' primary aim was identifying key factors that facilitate or impede colleges' efforts to build campus-community partnerships. PARTICIPANTS AND METHODS: From fall 2004 to summer 2006, administrators at five 4-year colleges participated in a multisite case study. Level of partnership development was the primary outcome. RESULTS: Three interrelated factors facilitated higher-developed partnerships: college staff assigned to facilitate the partnerships who worked as community organizers, higher-level college administrators who served as aggressive champions, and community initiation of the partnership. The authors did not observe this trio of factors among the less-developed partnerships. A lack of administrative support made it more difficult for a champion to emerge, a college administrator who staunchly advocated for a campus-community partnership, and for those assigned to facilitate the partnership to carry out their work. CONCLUSIONS: Colleges should appoint higher-level administrators to serve as champions, while also ensuring that those assigned to facilitate a partnership can apply community organizing skills.  相似文献   
136.
College obesity is increasing, but to the authors' knowledge, no researchers to date have evaluated risk factors in this population. OBJECTIVE: The authors assessed whether abnormal eating perceptions and behaviors were associated with overweight in college students. PARTICIPANTS AND METHODS: A sample of undergraduates (N = 4,201) completed an online survey containing demographic questions and the Eating Attitudes Test-26 (EAT-26) questionnaire. The authors stratified participants into normal-weight and overweight/obese groups and evaluated physical activity, EAT-26 score, purging behaviors, and answers to selected overweight screening questions on the basis of body mass index. A modified EAT-26 score of > or = 11 was associated with overweight (p = .016). RESULTS: Compared with normal-weight peers, overweight participants displayed an increased fear of bingeing, preoccupation with food, desire to be thinner, and engagement in dieting behavior. Mean body mass index also increased with age and physical inactivity (p < .001). CONCLUSIONS: Because physical inactivity, disordered eating perceptions, and disordered behaviors are associated with increased rates of overweight and obesity, identification of these risk factors in obese youths may increase understanding of weight loss barriers and facilitate the treatment of adolescent obesity.  相似文献   
137.
OBJECTIVE: The authors assessed associations between body weight perception and weight loss strategies. PARTICIPANTS: They randomly selected male and female college students (N = 38,204). METHODS: The authors conducted a secondary data analysis of the rates of weight loss strategies and body weight perception among students who completed the National College Health Assessment survey. RESULTS: Half of respondents (50%) were trying to lose weight, although only 28% of students were overweight or obese. Also, 12% of respondents had inaccurate body weight perception. Women and men with inaccurate body weight perception were significantly more likely to engage in inappropriate weight loss strategies than were those with accurate body weight perception. Of all students attempting to lose weight, 38% used both diet and exercise. CONCLUSIONS: These data show that college students are interested in weight loss and that body weight perception plays an important role in the desire to lose weight.  相似文献   
138.
139.
This article presents a synthesis of what is known about the educational experiences of youth living in residential group care based on a literature review that highlights both the experiences of the youth themselves and the operational context of residential group care in Ontario as it pertains to educational performance. The author argues that there is little emphasis on education within the residential group care sector in Ontario that could translate into more productive educational experiences for youth. The article then provides a framework for developing a culture of education for residential group care that can be acted upon expeditiously. Enhancing the educational performance of young people living in group care will require a cultural approach that provides for daily and pervasive education supports and encouragement, and aims to enhance the lived experience of young people pursuant to their education.  相似文献   
140.
The flexible and cheap labour that European “post‐industrial” economies are in need of is often facilitated by undeclared labour. The undocumented migrant, from his/her part, relatively easily finds work that suits his ‐‐ at least initial ‐‐ plans. What lies behind this nexus between irregular migration and informal economy? To what extent can this nexus be attributed to the structural features of the so‐called “secondary”, as opposed to “primary”, labour market? And how does migration policy correlate with this economic context and lead to the entrapment of migrants in irregularity? Finally, can this vicious cycle of interests and life‐strategies be broken and what does the experience of the migrants indicate in this respect? This paper addresses these questions via an exploration of the grounds upon which irregular migration and the shadow economy complement each other in southern Europe (SE) and central and Eastern Europe (CEE) (two regions at different points in the migration cycle). In doing so, the dynamic character of the nexus between informal economy and irregular migration will come to the fore, and the abstract identity of the “average” undocumented migrant will be deconstructed.  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