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   829篇
  免费   43篇
各国政治   98篇
工人农民   24篇
世界政治   67篇
外交国际关系   47篇
法律   390篇
中国共产党   1篇
中国政治   6篇
政治理论   233篇
综合类   6篇
  2023年   4篇
  2022年   4篇
  2021年   5篇
  2020年   17篇
  2019年   20篇
  2018年   21篇
  2017年   29篇
  2016年   31篇
  2015年   27篇
  2014年   29篇
  2013年   142篇
  2012年   21篇
  2011年   20篇
  2010年   25篇
  2009年   15篇
  2008年   24篇
  2007年   21篇
  2006年   33篇
  2005年   32篇
  2004年   26篇
  2003年   35篇
  2002年   38篇
  2001年   10篇
  2000年   12篇
  1999年   13篇
  1998年   20篇
  1997年   19篇
  1996年   10篇
  1995年   7篇
  1994年   14篇
  1993年   17篇
  1992年   10篇
  1991年   8篇
  1990年   8篇
  1989年   11篇
  1988年   17篇
  1987年   5篇
  1986年   5篇
  1985年   5篇
  1984年   6篇
  1983年   4篇
  1982年   5篇
  1981年   7篇
  1979年   9篇
  1978年   6篇
  1975年   3篇
  1973年   3篇
  1972年   3篇
  1971年   3篇
  1968年   3篇
排序方式: 共有872条查询结果,搜索用时 15 毫秒
841.
This study investigated the relation of adolescent same-sex attraction to “successful development” (Baltes, P. B., Am. Psychol. 32:366–380, 1997). Based on a survey of high-school adolescents, four groups were defined according to the nature of self-reported sexual attraction: exclusively heterosexual (EHA; n=3594); mostly heterosexual (MHA; n=124); bisexual (BSA; n=122); and same-sex attraction (SSA, n=36). Groups were compared across multiple intrapersonal, interpersonal, and environmental domains based on mean group differences and prevalence of developmental assets. Although the EHA group reported the most positive status across domains, several similarities among the groups were noted. Groups did not differ significantly in friendship quality and perceptions of school climate in the mean group comparisons, as well as academic orientation and (low) peer victimization in the assets-based analyses. Implications for successful development among adolescents reporting same-sex attraction are discussed along with the integration of the study of non-heterosexual youth into mainstream adolescent research.
Michael A. BusseriEmail:
  相似文献   
842.
Violence-related behavior in schools has declined in recent years, but the perception of risk remains high. Disturbingly high percentages of students and teachers report staying home out of fear, and many students bring weapons to school for protection. Current proposals for preventing school violence include punishing the violence-prone, expulsion for weapon carriers, and creating a culture of nonviolence through various behavioral methods like conflict resolution. None of these proposals address the issue of lethal violence and hence personal safety. The risk of lethal violence in schools (related mainly to firearms) could be substantially reduced by creating an effective barrier between firearms and people. This could be achieved by using entry-based weapons detection systems similar to those now used in airports and courts. Decreasing the risk and fear of violence by converting schools into weapons-free zones would also be expected to increase attendance and improve scholastic performance. Randomized, controlled studies should be undertaken to evaluate the efficacy and cost-effectiveness of entry-based weapons detection systems for achieving these outcomes.  相似文献   
843.
844.
Use of metaphors is a staple feature of how we understand policy processes – none more so than the use of ‘policy stages’/'cycles’ and ‘multiple streams’. Yet even allowing for the necessary parsimony of metaphors, the former is often criticised for its lack of ‘real world’ engagement with agency, power, ideology, turbulence and complexity, while the latter focuses only on agenda‐setting but at times has been utilised, with limited results, to understand later stages of the policy process. This article seeks to explore and advance the opportunities for combining both and applying them to the policy‐formation and decision‐making stages of policy making. In doing so it examines possible three, four and five stream models. It argues that a five stream confluence model provides the highest analytical value because it retains the simplicity of metaphors (combining elements of two of the most prominent models in policy studies) while also helping capture some of the more complex and subtle aspects of policy processes, including policy styles and nested systems of governance.  相似文献   
845.
Abstract

This paper assesses the major forms of federal housing assistance and compares the relative value of each in meeting the housing needs of the nation's low‐ and moderate‐income households. Programs are first identified and described. A ranking system, based on nine criteria of desirability, is then developed and used to compare the programs. The evaluation system presented in this paper represents one method of determining how to allocate scarce federal housing assistance funds. The subjective nature of the evaluation process dictates that other criteria and weighting systems may be legitimately applied. However, to provide a clear decision‐making framework, any such system should clearly explain its assumptions and rationales.  相似文献   
846.
The Federal Housing Administration (FHA) deserves considerable credit for helping support the housing market during the recent financial crisis by increasing its own market share. However, as the recovery continues, the FHA can gradually return to its “traditional” role as an insurer of low-down-payment home mortgages for low-to-moderate-income and first-time homebuyers. A major concern going forward is susceptibility to increased adverse selection if it continues in nontraditional markets. Indeed, the modest market share of the FHA going into the housing collapse was important both in limiting its losses and in allowing it to maintain the market when other traditional secondary market makers failed.  相似文献   
847.
The World Bank's recent concern for ‘empowerment’ grows out of longer standing discussions of participation, non-governmental organisations (NGOs) and civil society. While commitments to empowerment enter World Bank texts with relative ease, their practice within Bank-funded projects is far more contingent, and the meanings they assume become much more diverse. This paper considers the relationship between such texts and the development practices which emerge, using an analysis of the ‘organisational cultures’ of the Bank and the many organisations on which it depends in the implementation of its rural development programmes. The paper presents a framework for analysing these organisational cultures in terms of (a) the broader contexts in which organisations and their staff are embedded; (b) the everyday practices within organisations; (c) the power relations within and among organisations; and (d) the meanings that come to dominate organisational practice. A case study of a development programme in Bangladesh is used to illustrate the ways in which cultural interactions between a variety of organisations – the World Bank, government agencies, NGOs, organisations of the poor, social enterprises – mediate the ways in which textual commitments to empowerment are translated into a range of diverse practices.  相似文献   
848.
The adoption of agricultural technologies, whether developed through biotechnology or other methods, depends on social, political, regulatory and biological parameters. This article first presents an example of a low-input, non-biotechnological method of pest control that, while seemingly reasonable to researchers and extension agents, was not adopted by farmers. It then analyses a method for insect management developed through biotechnology that is becoming widely adopted: transgenic plants expressing insecticidal proteins from the bacterium Bacillus thuringiensis (Bt). Globally increasing adoption of Bt plants, by small and large farmers in both low- and high- income countries requires explanation in terms of biological properties of cropping systems and insect populations, alternative control techniques and social policy considerations.  相似文献   
849.
850.
In Sudan the pastoral groups of nomad origin constitute an important component of that society. Nevertheless, these groups have been the object of a constant “invisibalisation” (symbolic and material) and of a “setting of otherness” contrasting them with other social categories in the country. This article offers a reflection on the contribution of a “pastoral perspective” as a critique of the reductionist trends of a complex of dichotomisation of the categories to consider the two Sudans and their populations. In expanding on the view of several timely ethnographies on the work of various researchers on Sudanese shepherds, as well as on the official “treatment” of these groups in national censuses or development plans, the article proposes avenues for reconsidering Sudanese studies beyond a persistent categorisation of “nomad pastoralism”, which contributes to an accentuation of the differences between the social components at the heart of each of the Sudans as well as between the current two Sudans.  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