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   844篇
  免费   14篇
各国政治   47篇
工人农民   31篇
世界政治   76篇
外交国际关系   34篇
法律   423篇
中国政治   2篇
政治理论   234篇
综合类   11篇
  2023年   5篇
  2022年   5篇
  2020年   12篇
  2019年   19篇
  2018年   23篇
  2017年   26篇
  2016年   26篇
  2015年   14篇
  2014年   23篇
  2013年   115篇
  2012年   17篇
  2011年   21篇
  2010年   28篇
  2009年   19篇
  2008年   25篇
  2007年   34篇
  2006年   25篇
  2005年   30篇
  2004年   28篇
  2003年   23篇
  2002年   24篇
  2001年   14篇
  2000年   14篇
  1999年   21篇
  1998年   19篇
  1997年   10篇
  1996年   10篇
  1995年   11篇
  1994年   11篇
  1993年   9篇
  1992年   14篇
  1991年   6篇
  1990年   12篇
  1989年   7篇
  1988年   14篇
  1987年   10篇
  1986年   9篇
  1985年   10篇
  1984年   12篇
  1983年   10篇
  1982年   8篇
  1981年   5篇
  1980年   6篇
  1979年   7篇
  1978年   5篇
  1976年   8篇
  1975年   5篇
  1973年   12篇
  1968年   7篇
  1967年   5篇
排序方式: 共有858条查询结果,搜索用时 15 毫秒
851.
The importance of livestock as a pathway out of poverty is widely recognised, but the effectiveness of pro-poor livestock development projects has been questioned. This study examines a sample of livestock development projects to draw lessons about their effectiveness and identify best practice. A large proportion of projects (60 per cent) were categorised as having not been successful. Project success is found to be positively associated with size of project, diversity of direct project beneficiaries, institution development activities in projects, and effective monitoring and evaluation activities. Lack of reliability of government partners, and inclusion of other agricultural activities together with livestock activities in projects, undermine success.

Résultats en matière de développement pro-pauvres des projets basés sur l’élevage : analyse et enseignements tirés de la documentation de projets

L'importance de l’élevage comme moyen d’échapper à la pauvreté est largement reconnu, mais l'efficacité des projets de développement pro-pauvres basés sur l’élevage a été mise en cause. Cette étude examine un échantillon de projets de développement basés sur l’élevage pour en tirer des enseignements concernant leur efficacité et identifier les meilleures pratiques. Un considérable pourcentage des projets (60 pour cent) ont été catégorisés comme n'ayant pas réussi. Le succès des projets se révèle être positivement associé à la taille du projet, à la diversité des bénéficiaires directs du projet, aux activités de développement des institutions dans le cadre des projets, et à des activités efficaces de suivi et d’évaluation. Le manque de fiabilité des partenaires gouvernementaux et l'inclusion d'autres activités agricoles dans les activités d’élevage dans le cadre des projets ont aussi une incidence négative sur le succès.

Desempeño de los proyectos de desarrollo ganadero en pro de los pobres: análisis y aprendizajes a partir de la documentación de los proyectos

Es ampliamente reconocida la importancia que tiene el ganado como un medio para salir de la pobreza. Sin embargo, se ha cuestionado la efectividad de algunos proyectos de desarrollo ganadero en pro de los pobres. El presente estudio examina una muestra de proyectos de desarrollo ganadero, con el fin de obtener aprendizajes sobre su efectividad y de identificar las mejores prácticas. Un elevado porcentaje (60%) de los proyectos fue clasificado como no exitoso. Se encontró que el éxito del proyecto se asocia positivamente a su tamaño, a la diversidad de los beneficiarios directos, a las actividades de desarrollo llevadas a cabo por las instituciones participantes en el proyecto, así como a actividades de monitoreo y de evaluación efectivas. El éxito de los proyectos se ve disminuido por la falta de formalidad de las contrapartes gubernamentales y por la incorporación de otras actividades agrícolas en los proyectos ganaderos.

Desempenho de projetos sobre gado pra o desenvolvimento dos pobres: análise e lições extraídas da documentação de projetos

A importância da criação de gado como um caminho para sair da pobreza é altamente reconhecida, mas a efetividade de projetos sobre a criação de gado para o desenvolvimento de pessoas pobres tem sido questionada. Este estudo examina uma amostra de projetos sobre criação de gado para o desenvolvimento visando extrair lições sobre sua efetividade e identificar as melhores práticas. Uma grande proporção dos projetos (60 por cento) foi classificada como não tendo sido bem-sucedida. Constatou-se que o sucesso do projeto está positivamente associado ao seu tamanho, diversidade dos seus beneficiários diretos, atividades de desenvolvimento institucional nos projetos e monitoramento efetivo e atividades de avaliação. A falta de confiança de parceiros do governo e a inclusão de outras atividades agrícolas, juntamente com as atividades de criação de gado nos projetos, impossibilitam o seu sucesso.  相似文献   

852.
853.
Similar to a number of other right-wing populist parties in Europe, Great Britain's United Kingdom Independence Party (UKIP) has experienced increased public support in recent years. Using aggregate data from monthly national surveys conducted between April 2004 and April 2014, time series analyses demonstrate that the dynamics of UKIP support were influenced by a combination of spatial and valence issues. A spatial issue, Euroscepticism, was fundamental, with UKIP support moving in dynamic equilibrium with changing public attitudes towards EU membership. In addition, widespread anti-immigration sentiment and dissatisfaction with the performance of the Conservative–Liberal Democrat coalition government combined with the “oxygen of publicity” to propel UKIP's surge. The political context after the 2010 general election helped as well by enabling UKIP to benefit from valence considerations. Many voters continued to doubt the competence of the major opposition party, Labour, while the Liberal Democrats were part of the government and, hence, unavailable as a protest vehicle. Since many of the forces driving UKIP support are beyond its control, the party's prospects are highly uncertain.  相似文献   
854.
ABSTRACT

This article explores the convergences and divergence between transitional justice and peacebuilding, by considering some of the recent developments in scholarship and practice. It examines the notion of ‘peace’ in transitional justice and the idea of ‘justice’ in peacebuilding. It highlights that transitional justice and peacebuilding often engage with similar or related ideas, though the scholarship in each field has developed largely in parallel to each other, and often without any significant engagement between the fields of inquiry. The article also notes that both fields share other commonalities, insofar as they often neglect questions of capital (political, social, economic) and at times, gender. It is suggested that trying to locate the nexus in the first place draws attention to where peace and justice have actually got to be produced in order for there not to be conflict and violence. This in turn demonstrates that locally, ‘peace’ and ‘justice’ do not always look like the ‘peace’ and ‘justice’ drawn up by international donors and peacebuilders; and, despite the ‘turn to the local’ in international relations, it is surprising just how many local and everyday dynamics are (dis)missed as sources of peace and justice, or potential avenues of addressing the past.  相似文献   
855.
A method to reliably distinguish menstrual blood from blood in the normal circulation (peripheral blood) would be of considerable use in the forensic analysis and interpretation of evidence in sexual offence investigations. Previous attempts to address this issue have explored microscopy, lactate dehydrogenase isozyme identification, mRNA and miRNA profiling, and identification of the products of fibrinolysis. Here, four assays for D-dimer, a terminal degradation product of fibrinolysis, are evaluated for their specificity and sensitivity in detection of menstrual blood. In addition the effect of exercise, and sample storage upon D-dimer detection was investigated. Comparison of different assays revealed significant differences in results given. Nevertheless, no positive results for D-dimer were obtained using peripheral blood, mixtures of peripheral blood with semen, or peripheral blood taken from donors after moderate exercise. D-dimer was found to be detectable in 100% of menstrual blood samples after 1 week at room temperature and also in samples stored long-term (>3 years) at -20 °C. D-dimer may be an effective, simple to use tool for the presumptive identification of menstrual blood identification.  相似文献   
856.
The transfer between two-year and four-year colleges is a critical path to baccalaureate attainment. Yet students face a number of barriers in transfer pathways, including a lack of coherent coordination and articulation between their community colleges and four-year institutions, resulting in excess units and increased time to degree. In this paper we evaluate the impact of California's Student Transfer Achievement Reform Act, which aimed to create a more seamless pathway between the California Community Colleges and the California State University. We investigate whether the reform effort met its intended goal of improving baccalaureate receipt, and greater efficiency in earning these degrees, among community college transfer students. We tease out plausibly causal effects of the policy by leveraging the exogenous variation in the timing of the implementation of the reform in different campuses and fields of study. We find an overall positive effect on bachelor's degree attainment. This increase is driven entirely by increased transfer rather than an increased probability of earning a BA/BS conditional on transfer. We find only suggestive evidence that the policy led to greater efficiency (i.e., fewer units at graduation) in BA/BS receipt for transfer students. These findings are broadly consistent across student subgroups.  相似文献   
857.
Some progressive U.S. Cities and several Canadian provinces now provide mechanisms for polyamorous families to register as such with state authorities. More than a million people in the United States identify as polyamorous and many more practice some form of ethical nonmonogamy. This article suggests that the growing recognition of polyamory poses a substantial threat to a simultaneous development in family law: the call by scholars and the Uniform Law Commission for courts to enforce a more implied contract, implied partnership and equitable claims in the context of non-marital conjugal cohabitation. Non-marital cohabitants argue that courts can infer marital-type commitments to share property from the fact of conjugal cohabitation. They argue that their nonmarriage should entitle them to the kinds of relief afforded to divorcing couples. But polyamorous conjugal cohabitation involves very different norms and commitments to reliance, partnership and transparency than does traditional marriage. Marital-type relief maps awkwardly, if at all, onto the reality of most polyamorous relationships. By bringing into relief that which we cannot necessarily assume about conjugal cohabitation, the recognition of polyamory questions what many proponents of more legal protection of nonmarital couples ask courts to assume about conjugal cohabitation, namely that it gives rise to reasonable reliance on a status quo and an intent to share property. Moreover, by providing a means for polyamorous households to register their relationships, polyamorous registration normalizes the idea of non-marital relationship registration. The more normal and expected it is for people who want rights as some form of family to register their familial intent with the state, the harder it is for those who have not so registered to argue that the state must treat them as some sort of family.  相似文献   
858.
The insurance as governance literature focuses on the ability of private enterprises to collectively regulate, pool, and distribute risks. This paper analyzes how governments support insurance markets to maintain insurability and limit risks to society. We propose a new conceptual framework grouping government interventions into three dimensions: regulation of risky activity, public investment in risk reduction, and co-insurance. We apply this framework to six case studies, describing insurance markets' reliance on public support in more analytically precise terms. We analyze how mature insurance markets overcame insurability challenges akin to those currently presented by extortive cybercrime. Private governance struggled when markets grew too big for informal coordination or when (tail) risks escalated. Government interventions vary widely. Some governments prioritize supporting economic activity while others concentrate on containing risks. Governments also choose between risk reduction and ex post socialization of losses. We apply these insights to the market for ransomware insurance, discussing the merits and potential hazards of current proposals for government intervention.  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