全文获取类型
收费全文 | 13661篇 |
免费 | 274篇 |
国内免费 | 15篇 |
专业分类
管理学 | 1621篇 |
民族学 | 83篇 |
人才学 | 1篇 |
人口学 | 1182篇 |
丛书文集 | 144篇 |
理论方法论 | 1257篇 |
综合类 | 696篇 |
社会学 | 7276篇 |
统计学 | 1690篇 |
出版年
2023年 | 72篇 |
2021年 | 109篇 |
2020年 | 216篇 |
2019年 | 260篇 |
2018年 | 335篇 |
2017年 | 487篇 |
2016年 | 336篇 |
2015年 | 270篇 |
2014年 | 320篇 |
2013年 | 2129篇 |
2012年 | 501篇 |
2011年 | 486篇 |
2010年 | 403篇 |
2009年 | 339篇 |
2008年 | 424篇 |
2007年 | 428篇 |
2006年 | 432篇 |
2005年 | 375篇 |
2004年 | 306篇 |
2003年 | 269篇 |
2002年 | 280篇 |
2001年 | 349篇 |
2000年 | 289篇 |
1999年 | 282篇 |
1998年 | 203篇 |
1997年 | 171篇 |
1996年 | 164篇 |
1995年 | 180篇 |
1994年 | 168篇 |
1993年 | 165篇 |
1992年 | 191篇 |
1991年 | 190篇 |
1990年 | 189篇 |
1989年 | 165篇 |
1988年 | 170篇 |
1987年 | 195篇 |
1986年 | 150篇 |
1985年 | 160篇 |
1984年 | 182篇 |
1983年 | 153篇 |
1982年 | 154篇 |
1981年 | 125篇 |
1980年 | 111篇 |
1979年 | 124篇 |
1978年 | 98篇 |
1977年 | 80篇 |
1976年 | 95篇 |
1975年 | 109篇 |
1974年 | 84篇 |
1972年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
This is a study about aging women veterans who served in the military during the 1940s, 1950s and 1960s. The Veterans Administration (VA) represents a formal network of health and support services that offers a wide range of benefits for veterans. However, older women veterans may not be aware of, or benefit from, all that may be available to them. The purpose of this study was to learn about aging women veterans' knowledge and utilization of services and benefits available through the VA. Telephone interviews were conducted in April 1998 with 220 women veterans in Massachusetts who were age 60 + years. There was generally strong identification with veterans' organizations among the women surveyed. These women veterans were likely to receive medical care-a major benefit available through the VA. The benefits veterans were least likely to know about included services that may be particularly relevant and helpful to an aging veteran, such as long-term care and home adaptation services. Strategies are suggested to enhance outreach efforts to aging veterans. 相似文献
962.
The Comprehensive Everglades Restoration Plan, enacted in 2000, is a $7.8 billion federal/state investment in restoring the Florida Everglades ecosystem. The plan is a negotiated compromise between divergent interests in south Florida and promises to provide water and flood control for urban and agricultural users while maintaining a priority commitment to the natural system when allocating water produced by the 30-year project. The environmental community calls for independent scientific review of un-tested technologies, early and substantial hydrologic benefits to the remaining Everglades, including Everglades National Park, and strong programmatic regulations of the federal project to ensure that ecological restoration remains its primary purpose in spite of inherently conflicting interests at the state and local level. 相似文献
963.
The immaturity of the evidence base in some areas of child welfare practice demands that practitioners approach the development and refinement of practice in a systematic way that explicitly seeks to build on and learn from experience. The efforts of public child welfare agencies in Boston and Cleveland show that it is possible to draw on a broader base of knowledge and experience while responding to unique conditions and circumstances in each agency's community. 相似文献
964.
A central sociological problem is the extent to which genetics and the environment influence human behavior. Studies of twins are a core method in attempts to disentangle and to determine the comparative strength of genetic and environmental influences on psychosocial outcomes. A critical assumption of twin studies is that both monozygotic "identical" twins and dizygotic "fraternal" twins share common social environments. Therefore, any greater similarity of monozygotic than dizygotic twins is attributed to genetic influences. This paper tests the equal environment assumption by examining the extent to which greater concordance of adolescent monozygotic compared to dizygotic twins results from social, as well as genetic, influences. Bivariate comparisons indicate that monozygotic twins show greater similarity than dizygotic twins in socially-based characteristics including physical attractiveness, time spent in each other's company, the overlap in friendship networks, and friends' use of alcohol. Multivariate analyses indicate that measures of the social environment sometimes reduce or eliminate apparent genetic effects. In comparison with genetic indicators, social variables are usually stronger predictors of depression and alcohol use and abuse. These findings suggest that past twin studies could overstate the strength of genetic influences because some similarities in behavior among monozygotic compared to dizygotic twins stem from social influences. 相似文献
965.
Ellickson PL Bird CE Orlando M Klein DJ McCaffrey DF 《Journal of health and social behavior》2003,44(4):525-535
This paper examines the links between individual adolescent smoking behavior and actual and perceived smoking behavior in the individual's school cohort. We hypothesized that students enrolled in schools with higher smoking prevalence among students in their grade are more likely to smoke subsequently. We also expected perceived school-level prevalence of smoking to have a greater impact than actual prevalence because the former is a more direct measure of perceived norms. Adjusting for demographics, actual school-level prevalence at baseline (grade 7) was strongly associated with smoking frequency one year later. However, the association disappeared after adjusting for individual smoking frequency at baseline. School-level prevalence did not moderate the association between individual's baseline and subsequent smoking frequency. Perceived prevalence of smoking among grade 8 students and two measures tapping the behavior of smaller peer groups--cigarette offers and exposure to friends and other peers who smoke--were associated with increased risk of smoking. 相似文献
966.
967.
The impact of touch-tone data entry on reports of HIV and STD risk behaviors in telephone interviews
Respondents concerns about privacy can decrease reporting of HIV and STD risk behaviors in general population telephone surveys. The purpose of this paper is to describe the results of an experimental study evaluating whether one method for increasing privacy, touch-tone data entry (TTDE), is effective in increasing estimates of sexual behaviors from a population-based survey. We conducted a random-digit-dial telephone survey of adults in New Jersey (n = 405), with half the respondents using TTDE for answering sexual behavior questions. TTDE led to increased reports of same-sex sexual behavior, certain HIV and STD risk factors, and concern about one s risk for HIV and STD transmission. TTDE also narrowed the difference between men s and women s reports of the number of different sexual partners over the past 10 years. The feasibility and limitations of TTDE are discussed, as well as possible alternative interpretations that consider the impact of TTDE on the dynamics of the interaction between the respondent and the interviewer. 相似文献
968.
Liddle and Dakof's (1995) comprehensive review of the status of family-based treatment for drug abuse concluded that this modality offered a "promising, but not definitive" approach to treating drug abuse among adolescents and adults. Less than a decade later, significant progress can be seen in the treatment of drug abuse problems using family-based approaches, particularly with adolescents. Family-based treatments are currently recognized as among the most effective approaches for adolescent drug abuse. Family-based treatment of adult drug abuse problems has also advanced in important ways with the recent systematic application and testing of engagement techniques and behavioral couples therapy approaches. The current review characterizes and discusses the developmental status of this subspecialty and outlines areas in which continued research attention is needed. 相似文献
969.
McCoy ML 《Journal of drug education》2003,33(3):275-288
These studies explored attitudes toward maternal culpability in cases of alleged fetal abuse. In experiment one, general culpability for the use of various substances during pregnancy was assessed as well as the impact of other potentially relevant factors. One hundred and twenty students completed the survey. Participants overwhelmingly supported treating drug use by pregnant women as a criminal offense. With regard to the assessment of more specific questions, the lack of consensus regarding what factors effect culpability is striking. Experiment two examined the possible impact of the mothers' race (White or Black) and social class (Poor or Middle class) on the assessment of culpability. One hundred and sixty-four community members responded to a survey sent to randomly selected persons in upstate South Carolina. The results indicate that at least in response to a brief, written, case scenario, neither race nor social class make a large impact on participants' sanction recommendations. 相似文献
970.
Chapple CL 《Violence and victims》2003,18(2):143-162
Family violence research has uncovered a positive relationship between parental violence and children's later involvement in intimate violence. In a similar vein, criminology's social control theory suggests that weak or absent parental controls are associated with a variety of delinquent acts. Little research, however, investigates the link between parental violence, parental controls, and dating violence. This article asks two research questions: How is inter-parental violence associated with parent-child attachments, monitoring, adolescent dating, attitudes toward violence, and dating violence? And second, are there independent and interactive effects of inter-parental violence, and parental controls on dating violence offending and attitudes towards violence? Dating violence offending is significantly associated with witnessed inter-parental violence, high dating frequency, and low parental monitoring. Attitudes towards violence are associated with witnessed inter-parental violence, lower parental attachment, and the interaction of witnessed inter-parental violence and parental attachment. The implications for role modeling and social control theory are discussed. 相似文献