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   22427篇
  免费   310篇
  国内免费   2篇
管理学   2922篇
民族学   136篇
人口学   1983篇
丛书文集   85篇
教育普及   1篇
理论方法论   2026篇
综合类   221篇
社会学   11174篇
统计学   4191篇
  2023年   165篇
  2022年   102篇
  2021年   160篇
  2020年   439篇
  2019年   621篇
  2018年   713篇
  2017年   910篇
  2016年   729篇
  2015年   471篇
  2014年   645篇
  2013年   3942篇
  2012年   803篇
  2011年   760篇
  2010年   556篇
  2009年   456篇
  2008年   605篇
  2007年   560篇
  2006年   574篇
  2005年   452篇
  2004年   477篇
  2003年   397篇
  2002年   418篇
  2001年   515篇
  2000年   459篇
  1999年   441篇
  1998年   346篇
  1997年   291篇
  1996年   300篇
  1995年   315篇
  1994年   275篇
  1993年   281篇
  1992年   319篇
  1991年   324篇
  1990年   313篇
  1989年   274篇
  1988年   273篇
  1987年   219篇
  1986年   246篇
  1985年   266篇
  1984年   231篇
  1983年   210篇
  1982年   173篇
  1981年   148篇
  1980年   165篇
  1979年   180篇
  1978年   154篇
  1977年   129篇
  1976年   105篇
  1975年   106篇
  1974年   100篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
81.
82.
Our “Restated diversification theorem” (Skogh and Wu, 2005) says that risk-averse agents may pool risks efficiently without assignment of subjective probabilities to outcomes, also at genuine uncertainty. It suffices that the agents presume that they face equal risks. Here, the theorem is tested in an experiment where the probability of loss, and the information about this probability, varies. The result supports our theorem. Moreover, it tentatively supports an evolutionary theory of the insurance industry—starting with mutual pooling at uncertainty, turning into insurance priced ex ante when actuarial information is available.  相似文献   
83.
Hearing the voices of abused older women   总被引:1,自引:0,他引:1  
This paper focuses on a qualitative research process that gathered responses from 64 older women aged fifty and older on their experience of violence and abuse. What older women said about abuse in their lives supports the use of a feminist framework as well as the age based analysis of the elder abuse field. Some respondents spoke of abuse from childhood into their later years. Some spoke of partners witnessing or experiencing abuse as children. Some women express concern about possible abuse by their adult children of their own children. Abused older women like younger women need a safe environment, emotional support, advocacy, information, and peer support. While it is important to consider the perspectives and knowledge of service providers when developing policy and practice on abuse of older women, it is critical to ask the women survivors of abuse or neglect what they believe would benefit them, and others in similar situations.  相似文献   
84.
This article reports the results of an evaluation of the effectiveness of different types of information materials in communicating the risk from exposure to radon, a naturally occurring indoor air pollutant. The study involved a panel of 2300 homeowners who actually experienced risks from radon, and the information program used to explain these risks. The analysis considered information transfer and performance on specific tasks requiring information on the risk from radon to measure learning. The results suggest a systematic learning process, but indicate that the process can be influenced by how risk information is presented.  相似文献   
85.
86.
Nigeria's oil guarantees its role in the global economy; however, the state's overwhelming weaknesses perpetuate a high level of volatility vis-à-vis the potential for an immediate disruption of the national, regional, and global environment. This study presents a current qualitative analysis of Nigeria to produce a model that characterizes current conditions in the state and the state response to the nefarious acts in the delta region. This model will serve as a baseline for a significant iteration of the model that reflects the delta region counter-insurgency at various levels of strength: a what-if scenario of the region with an increase of state security over southern separatists, insurgents seeking to gain control of the oil assets. The conjectured model serves to inform/educate decision and policy makers in developing proactive, effective strategies to counter existent and potential threats in the Niger Delta.  相似文献   
87.
Research ethics is often understood by researchers primarily through the regulatory framework reflected in the research ethics review process. This regulatory understanding does not encompass the range of ethical considerations in research, notably those associated with the relational and everyday aspects of human subject research. In order to support researchers in their effort to adopt a broader lens, this article presents a “person-oriented research ethics” approach. Five practical guideposts of person-oriented research ethics are identified, as follows: (1) respect for holistic personhood; (2) acknowledgement of lived world; (3) individualization; (4) focus on researcher-participant relationships; and (5) empowerment in decision-making. These guideposts are defined and illustrated with respect to different aspects of the research process (e.g., research design, recruitment, data collection). The person-oriented research ethics approach provides a toolkit to individual researchers, research groups, and research institutions in both biomedical and social science research wishing to expand their commitment to ethics in research.  相似文献   
88.
89.
In recent times, China has significantly reduced hunger in its populace. The main objective of this paper was to analyze some of the contextual socioeconomic factors contributing to the reduction of hunger in China, using Qualitative Interpretative Meta‐Synthesis (QIMS). The results revealed that China has followed a broad‐based and multispectral approach to reduce hunger. Factors, such as poverty alleviation; social safety nets for disadvantaged villagers; agricultural development and land reforms; regional development and equity in development activities; infrastructural development; and political‐economic reform and sustainable growth were influential in reducing hunger in China. Poverty is attributed as one of the principal contributors and is interlinked with many other dimensions. The findings of this paper are a useful guide to the Chinese government, policy‐makers, international organizations, and development practitioners.  相似文献   
90.
Through the use of qualitative data analysis of in‐depth interviews with eight white international transracial adoptive mothers, four properties emerged that describe these mothers' racial views. These properties varied in the degree that they integrated perspectives different from the white dominant culture. The mothers did not experience significant changes in their perspective on race subsequent to adoption. This paper includes a discussion of white racial identity and implications for social work practice with transracially adoptive parents.  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