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   1621篇
  免费   40篇
  国内免费   16篇
管理学   340篇
民族学   10篇
人口学   29篇
丛书文集   98篇
理论方法论   90篇
综合类   633篇
社会学   297篇
统计学   180篇
  2024年   3篇
  2023年   19篇
  2022年   6篇
  2021年   18篇
  2020年   35篇
  2019年   48篇
  2018年   36篇
  2017年   61篇
  2016年   34篇
  2015年   43篇
  2014年   70篇
  2013年   255篇
  2012年   75篇
  2011年   87篇
  2010年   74篇
  2009年   69篇
  2008年   66篇
  2007年   72篇
  2006年   73篇
  2005年   70篇
  2004年   68篇
  2003年   64篇
  2002年   59篇
  2001年   48篇
  2000年   45篇
  1999年   17篇
  1998年   16篇
  1997年   12篇
  1996年   14篇
  1995年   24篇
  1994年   11篇
  1993年   14篇
  1992年   14篇
  1991年   6篇
  1990年   4篇
  1989年   11篇
  1988年   11篇
  1987年   10篇
  1986年   5篇
  1985年   4篇
  1984年   4篇
  1982年   1篇
  1981年   1篇
排序方式: 共有1677条查询结果,搜索用时 10 毫秒
991.
International adoption, the transfer of children for parenting purposes from one nation to another, presents an extreme form of what is often known as “stranger” adoption, in contrast to relative adoption (Bartholet, 2005 Bartholet, E. (2005). International adoption. In L. Askeland (Ed.), Children and youth in adoption, orphanages, and foster care (pp. 107130). Westport, CT: Greenwood Publishing Group. [Google Scholar], p. 8). Adoption brings major changes to the lives of children and adoptive parents. Intercountry adoptions are associated with high monetary costs, long waiting periods to adopt, changes of the family environment, and cultural challenges, along with other bureaucratic and socioeconomic factors. This paper explores the issue of international adoption failure through the prism of two theories: attachment theory and ecological systems theory. The author begins with a brief history of international adoption into the United States, followed by a discussion of factors contributing into adoption failure as discussed in other literature. Next, adoption failure is theoretically analyzed using the concepts of attachment and ecological systems theories. Suggestions for adoption practitioners are included.  相似文献   
992.
Athletes are a population group with unique vulnerabilities whose social work-related needs are often not met. Because of the perception that they are young and healthy, athletes are seen as free from mental health challenges and social problems. Yet athletes are at high risk for distress due to pressures to perform, avoid showing pain, hide physical injuries and substance abuse problems, eating disorders and burnout. At the same time, they may have false support systems that are interested in the athlete for social or monetary status. Social workers are broad systems practitioners who can focus on how the environment and other influences affect an athlete's mental health and well-being. Because social workers are strengths-based, they can assist athletes in achieving their highest level of functioning on and off the playing field.  相似文献   
993.
The crucial role evaluation can play in the co-development of project design and its implementation will be addressed through the analysis of a case study, the Green Communities (GC) project, funded by the Italian Ministry of Environment within the EU Interregional Operational Program (2007–2013) “Renewable Energy and Energy Efficiency”. The project's broader goals included an attempt to trigger a change in Italian local development strategies, especially for mountain and inland areas, which would be tailored to the real needs of communities, and based on a sustainable exploitation and management of the territorial assets. The goal was not achieved, and this paper addresses the issues of how GC could have been more effective in fostering a vision of change, and which design adaptations and evaluation procedures would have allowed the project to better cope with the unexpected consequences and resistances it encountered. The conclusions drawn are that projects should be conceived, designed and carried out as dynamic systems, inclusive of a dynamic and engaged evaluation enabling the generation of feedbacks loops, iteratively interpreting the narratives and dynamics unfolding within the project, and actively monitoring the potential of various relationships among project participants for generating positive social change.  相似文献   
994.
从调查大学生入党心理现状入手,分析大学生存在入党心理偏差的原因,构建心理学视角下的发展大学生党员全方位教育管理机制,保证大学生党员发展质量。  相似文献   
995.
Urvashi Vaid is a community organizer and writer active in the lesbian, gay, bisexual, and transgender (LGBT) and social justice movements for over three decades. She is currently Director of the Engaging Tradition Project at the Center for Gender and Sexuality Law at Columbia University Law School. She is founder of LPAC, the first lesbian political action committee, and sits on the Board of Directors of the Gill Foundation. Vaid's past positions include Executive Director of the Arcus Foundation, Deputy Director of Governance and Civil Society Unit for the Ford Foundation, Executive Director of the National Gay and Lesbian Task Force, and staff attorney for the ACLU National Prison Project. She is author of the books Irresistible Revolution: Confronting Race, Class and The Assumptions of Lesbian, Gay, Bisexual, and Transgender Politics, and Virtual Equality: The Mainstreaming of Gay & Lesbian Liberation, and co-editor of the book Creating Change: Public Policy, Sexuality and Civil Rights. Urvashi has had thyroid cancer and stage III breast cancer.  相似文献   
996.
Laura S. Brown, PhD, is a clinical and forensic psychologist in independent practice in Seattle, Washington. The bulk of her scholarly work has been in the fields of feminist therapy theory, trauma treatment, lesbian and gay issues, assessment and diagnosis, ethics and standards of care in psychotherapy, and cultural competence. She has authored or edited ten professional books, including the award-winning Subversive Dialogues: Theory in Feminist Therapy, as well as more than 140 other professional publications. She has also recently published her first book for general audiences, Your turn for care: Surviving the aging and death of the adults who harmed you. Laura has been featured in five psychotherapy training videos produced by the American Psychological Association. She was President of American Psychological Association Divisions 35 (Society for the Psychology of Women), 44 (Society for the Psychological Study of Lesbian, Gay and Bisexual Issues), and 56 (Trauma Psychology). Laura was also President of the Washington State Psychological Association. She is the founder and Director of the Fremont Community Therapy Project, a low-fee psychotherapy training clinic in Seattle. In the fall of 2000, she was the on-site psychologist for the reality show Survivor: The Australian Outback. In 1987, Laura lost her voice and was diagnosed with spasmodic dysphonia. In 1988, she found her voice again.  相似文献   
997.
This article explores the relationship between the child protection systems and the Nordic welfare state in Denmark, Finland and Norway. Despite an ideological focus on prevention and provision of a fair amount of universal services and in-home child protection services for families and children, there is, nevertheless, a relatively high number of children in the child protection system, even children placed out of their home. The outcome of child protection seems to be relatively poor. One of the problems in the present child protection systems is related to questionable service provision within the system. Other problems are about the normative foundation for the system, for example, family orientation and the least intrusive principle. Such principles are closely related to the logic of universal services, and may as such ignore the diversity of needs, rights, risks and ages of children needing protection and related services. Consequently, many principles of the present child protection systems are – and will remain – challenged by a child-centric orientation, in which valuing children's needs, rights and voice in situ are central.  相似文献   
998.
The achievable region approach seeks solutions to stochastic optimization problems by characterizing the space of all possible performances (the achievable region) of the system of interest and optimizing the overall system-wide performance objective over this space. This is radically different from conventional formulations based on dynamic programming. The approach is explained with reference to a simple two-class queueing system. Powerful new methodologies due to the authors and co-workers are deployed to analyse a general multi-class queuing system with parallel servers and then to develop an approach to optimal load distribution across a network of interconnected stations. Finally, the approach is used for the first time to analyse a class of intensity control problems.  相似文献   
999.
The conditional specification technique introduced by Arnold et al. (Conditional specification of statistical models. Springer series in statistics. Springer, New York, 1999) was used in Sarabia et al. (Astin Bull 34(1):85–98, 2004) to obtain bonus-malus premiums. The Poisson distribution for which the parameter is a function of the classical structure parameter was used and a new class of prior distributions appeared in a natural way. This model contains, as a particular case, the classical compound Poisson model. In the present paper, the Bayesian robustness of this new model is examined and found to be much more robust than in the classical model in Gómez et al. (Insur Math Econ 31:105–113, 2002). For the present study, the moment conditions on the prior distribution are required. Examples, with real data, are given to illustrate our ideas under the net and exponential premium principles.  相似文献   
1000.
The probability distribution of the maximum of normalized SNRs (signal-to-noise ratios) is studied for wireless systems with multiple branches. Explicit expressions and bounds are derived for the cumulative distribution function, probability density function, hazard rate function, moment generating function, nth moment, variance, skewness, kurtosis, mean deviation, Shannon entropy, order statistics and the asymptotic distribution of the extreme order statistics. Estimation procedures are derived by the methods of moments and maximum likelihood. An application is illustrated with respect to performance assessment of wireless systems.  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