全文获取类型
收费全文 | 20612篇 |
免费 | 585篇 |
国内免费 | 16篇 |
专业分类
管理学 | 2624篇 |
民族学 | 108篇 |
人才学 | 1篇 |
人口学 | 1795篇 |
丛书文集 | 173篇 |
理论方法论 | 1863篇 |
综合类 | 815篇 |
社会学 | 10357篇 |
统计学 | 3477篇 |
出版年
2023年 | 115篇 |
2021年 | 135篇 |
2020年 | 315篇 |
2019年 | 415篇 |
2018年 | 485篇 |
2017年 | 707篇 |
2016年 | 480篇 |
2015年 | 412篇 |
2014年 | 470篇 |
2013年 | 3484篇 |
2012年 | 699篇 |
2011年 | 660篇 |
2010年 | 567篇 |
2009年 | 482篇 |
2008年 | 601篇 |
2007年 | 619篇 |
2006年 | 594篇 |
2005年 | 508篇 |
2004年 | 424篇 |
2003年 | 368篇 |
2002年 | 409篇 |
2001年 | 500篇 |
2000年 | 426篇 |
1999年 | 414篇 |
1998年 | 319篇 |
1997年 | 287篇 |
1996年 | 272篇 |
1995年 | 272篇 |
1994年 | 237篇 |
1993年 | 281篇 |
1992年 | 313篇 |
1991年 | 301篇 |
1990年 | 302篇 |
1989年 | 261篇 |
1988年 | 267篇 |
1987年 | 294篇 |
1986年 | 238篇 |
1985年 | 232篇 |
1984年 | 282篇 |
1983年 | 237篇 |
1982年 | 232篇 |
1981年 | 180篇 |
1980年 | 192篇 |
1979年 | 224篇 |
1978年 | 163篇 |
1977年 | 156篇 |
1976年 | 158篇 |
1975年 | 184篇 |
1974年 | 148篇 |
1972年 | 116篇 |
排序方式: 共有10000条查询结果,搜索用时 718 毫秒
951.
About 50?years ago, Efron noted some counterintuitive properties of the long-term behavior of contests involving dice. For instance, consider the 6-sided dice whose sides are labeled (4,4,4,4,0,0), (3,3,3,3,3,3), (6,6,2,2,2,2), and (5,5,5,1,1,1). Each die has a 2/3 probability of rolling a higher number than the next one in the list and the last has the same 2/3 probability of rolling a higher number than the first. The non-transitivity of games involving non-identical dice was popularized by Gardner (Sci Am, 223:110–114, 1970). Although Gardner and other authors have observed that non-transitive dice serve to illustrate the complexities of the theory of voting, it does not seem that much attention has been paid to the corresponding voting system. Our purpose in this article is to present this voting system and compare its properties with those of other voting systems. One of the most interesting properties is the fact that cancellation with respect to the Efron dice voting system can replace cancellation with respect to pairwise preferences in Young’s characterization of the social choice function associated with the Borda Count. 相似文献
952.
Research suggests that age and organizational factors are consistently linked with job stress, burnout, and intent to leave among child protection workers. However, no study has contextualized how age matters with regards to these adverse employee outcomes. We conducted a theory driven path analysis that identifies sources of employment-based social capital, job stress, burnout, and intent to leave among two age groups. We used a statewide purposive sample of 209 respondents from a public child welfare organization in a New England state in the United States. Results suggest that the paths to job stress, burnout and intent to leave differed by age group. Social capital dimensions were more influential in safeguarding against job stress for older workers compared to younger workers. Our results justify creating workplace interventions for younger workers that target areas of the organization where relational support could enhance the quality of social interactions within the organization. Organizations may need to establish intervention efforts aimed at younger workers by creating different structures of support that can assist them to better deal with the pressures and demands of child protection work. 相似文献
953.
This paper considers the experiences of family home care providers, paid an hourly wage by California’s In Home Supportive
Services program to care for disabled or elderly relatives. These caregivers are unique in that they provide care in what
Arlie Hochschild calls the “third sector” of social life, where norms and responsibilities tied to work and family intersect.
Drawing on in-depth interviews and ethnographic observations of family home care providers, we find that providers perceive
their paid caregiving as deviant behavior that violates social norms surrounding family care, i.e. that people should not
be paid for the care of kin. Family caregivers manage the norm violation associated with their carework by offering “accounts”
that 1) emphasize the tasks and skill associated with caregiving and 2) by framing their carework as a public good that benefits
the larger community. These accounts allow family providers to distance themselves from the norm violation of receiving a
wage for care and to reconstruct their actions in a positive light. 相似文献
954.
Fostering participant engagement is a challenging but essential component of effective prevention programs. To better understand which factors influence engagement, this study examines several predictors of couple engagement in Family Foundations (FF), a preventive intervention for first-time parents shown to enhance parent mental health, couple relations, parenting quality, and child adjustment through age 3 years. FF consists of a series of classes delivered through childbirth education departments at local hospitals. Baseline data on socio-demographics, parent mental health, and couple relationship quality were examined as predictors of participants’ level of engagement in FF (n = 89 couples, 178 individuals). Sociodemographic variables such as parent gender, socioeconomic status, and age predicted program engagement to a limited extent. However, findings indicated that marital status was the best predictor of engagement. Discussion focuses on how findings can inform the development of practices that promote engagement, such as the use of targeted outreach efforts for individuals most at risk of disengagement. 相似文献
955.
This paper uses national longitudinal data and several new empirical strategies to examine the consequences of teenage fatherhood. The key contribution is to compare economic outcomes of young fathers to young men whose partners experienced a miscarriage rather than a live birth. The results suggest that teenage fatherhood decreases years of schooling and the likelihood of receiving a high school diploma and increases general educational development receipt. Teenage fatherhood also appears to increase early marriage and cohabitation, and has mixed short-term effects on several labor market outcomes. 相似文献
956.
We use a new U.S. survey on pro‐environmental behaviors, attitudes, and knowledge and find that individuals engage in activities that they believe are more effective in reducing carbon emissions, regardless of whether or not these beliefs are accurate. We find that low provision of the public good is greater among people who believe they cannot do much for the environment and do not consider themselves environmentalists. A policy implication of our results is that the effect of more accurate information on the provision of the public good is ambiguous. (JEL Q50, Q54, C10) 相似文献
957.
958.
Family therapy for drug abuse: review and updates 2003-2010 总被引:1,自引:0,他引:1
Rowe CL 《Journal of marital and family therapy》2012,38(1):59-81
Just 15 years ago, Liddle and Dakof (Journal of Marital and Family Therapy, 1995; 21, 511) concluded, based on the available evidence, that family therapy represented a "promising, but not definitive" approach for the treatment of drug problems among adolescents and adults. Seven years later, Rowe and Liddle (2003) review described considerable progress in this specialty with encouraging findings on adolescent-focused models based on rigorous methodology, as well as advances with adult-focused family-based treatments. The current review brings the field up to date with highlights from research conducted in the intervening 7 years, cross-cutting issues, recommendations for new research, and practice implications of these findings. Adolescent-focused family-based models that attend to the ecology of the teen and family show the most consistent and strongest findings in recent studies. Adult-focused models based on behavioral and systems theories of change also show strong effects with drug abusers and their families. The overarching conclusion is that family-based models are not only a viable treatment alternative for the treatment of drug abuse, but are now consistently recognized among the most effective approaches for treating both adults and adolescents with drug problems. 相似文献
959.
Public participation in the planning and design of major public infrastructure and construction (PIC) projects is crucial to their success, as the interests of different stakeholders can be systematically captured and built into the finalised scheme. However, public participation may not always yield a mutually acceptable solution, especially when the interests of stakeholders are diverse and conflicting. Confrontations and disputes can arise unless the concerns or needs of the community are carefully analysed and addressed. The aim of the paper is to propose a systematic method of analysing stakeholder concerns relating to PIC projects by examining the degree of consensus and/or conflict involved. The results of a questionnaire survey and a series of interviews with different entities are provided, which indicate the existence of a significant divergence of views among stakeholder groups and that conflicts arise when there is a mismatch between peoples’ perception concerning money and happiness on the one hand and development and damages on the other. Policy and decision-makers should strive to resolve at least the majority of conflicts that arise throughout the lifecycle of major PIC projects so as to maximise their chance of success. 相似文献
960.
Favis TL 《Journal of psychosocial nursing and mental health services》2012,50(6):17-20
A child or adolescent with pediatric bipolar disorder (PBD) is at higher risk for suicide, violence, and impaired psychosocial functioning. The prevalence of diagnosed PBD has increased 40-fold in less than 2 decades, leading some to believe that PBD is inaccurately diagnosed. Complicating this issue, disagreements exist among clinicians as to the utility of current screening methods. The assessment picture is further muddied by the high rate of comorbid psychiatric conditions. A literature review was performed to describe the present understanding of PBD and identify current practices of screening for the disorder. Although screening tools are available, the literature suggests they lack validity. Awareness, a thorough interview, and expedient referral may assist clinicians in making a correct diagnosis. Accurate assessment will help ease the psychological and economic burden of PBD. 相似文献