全文获取类型
收费全文 | 1268篇 |
免费 | 67篇 |
专业分类
各国政治 | 72篇 |
工人农民 | 59篇 |
世界政治 | 92篇 |
外交国际关系 | 103篇 |
法律 | 704篇 |
中国政治 | 11篇 |
政治理论 | 284篇 |
综合类 | 10篇 |
出版年
2023年 | 18篇 |
2022年 | 27篇 |
2021年 | 17篇 |
2020年 | 36篇 |
2019年 | 47篇 |
2018年 | 51篇 |
2017年 | 61篇 |
2016年 | 70篇 |
2015年 | 38篇 |
2014年 | 59篇 |
2013年 | 174篇 |
2012年 | 60篇 |
2011年 | 40篇 |
2010年 | 38篇 |
2009年 | 45篇 |
2008年 | 47篇 |
2007年 | 63篇 |
2006年 | 44篇 |
2005年 | 53篇 |
2004年 | 39篇 |
2003年 | 38篇 |
2002年 | 42篇 |
2001年 | 19篇 |
2000年 | 18篇 |
1999年 | 23篇 |
1998年 | 13篇 |
1997年 | 9篇 |
1996年 | 7篇 |
1995年 | 14篇 |
1994年 | 9篇 |
1993年 | 3篇 |
1992年 | 20篇 |
1991年 | 7篇 |
1990年 | 6篇 |
1989年 | 10篇 |
1988年 | 8篇 |
1987年 | 6篇 |
1986年 | 7篇 |
1985年 | 6篇 |
1984年 | 3篇 |
1983年 | 7篇 |
1982年 | 4篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1975年 | 4篇 |
1973年 | 2篇 |
1969年 | 3篇 |
1966年 | 3篇 |
1962年 | 1篇 |
1955年 | 1篇 |
排序方式: 共有1335条查询结果,搜索用时 9 毫秒
211.
Xavier de Souza Briggs 《Housing Policy Debate》2013,23(1):195-234
Abstract This article suggests ways to better design, conduct, and interpret evaluations of the effects of housing mobility programs on participants, with emphasis on how to isolate neighborhood effects. It reviews earlier critiques of neighborhood effects research and discusses the key assumptions of housing mobility programs—about the benefits of affluent neighbors, the spatial organization of opportunity for the urban poor, and the meanings of “neighborhood” to residents, researchers, and policy makers. Studying mobility contexts, especially in suburban areas, offers special challenges to researchers. More research is needed that looks at residents’ social ties and uses mixed‐methods approaches. Ethnographic data, in particular, would enhance the validity of the quantitative data that now dominate studies of neighborhood effects. Adding substantially to what we know about the processes or mechanisms—the “how” of neighborhood effects—mixed‐methods approaches would also make research much more useful to policy makers and program managers. 相似文献
212.
Gauthier de Villers 《Canadian journal of African studies》2013,47(2-3):432-447
This article, written in February 1998, describes political confusion, contradictions, and ambiguities (institutional as well as ideological) typical of the Kabila’s regime at that time. Political mobilisation as well as political identification were polarised by opposition between “local Zairians,” born from locally-born parents, and “new Congolese” who were born elsewhere or whose parent were born outside of the country. Other factors of political identification were ethnicity, regionalism, and generation. Given the fact that the new political regime suspended all political parties and that Kabila himself did not openly declare himself leader of a political movement, there was no open political activity. The article suggests that the new political crises is coming; it was confirmed by August 1998 rebellion/invasion. 相似文献
213.
Migration is a common and essential livelihood strategy in the risk-prone environment of Sahelian West Africa. But migration is not a passive reaction to economic and environmental forces. Patterns of movement are determined by context-specific and complex dynamics, mediated by social networks, gender relations and household structures. IDS-based research on sustainable livelihoods illustrated this in two locations in Mali: in a village in the Sahelian dryland with different and gendered migration patterns of various ethnic groups; and exceptional patterns in the Sudano-Sahelian cotton region with extensive and long-lasting engagement in small cocoa and coffee plantations in Côte d'Ivoire. 相似文献
214.
Nicolas Van de Sijpe 《发展研究杂志》2013,49(12):1763-1764
215.
The objectives of this article are to assess whether or not the feminisation of agriculture is occurring in China, and if so, to measure its impact on productivity. To meet these objectives, we rely on three data sets that allow us to explore who works on China's farms and the effects of the labour allocation decisions of rural households on productivity. We find that since the late 1990s, the role of women has increased in both the supply of farm labour and in the duties that they take on in the management of farms. While this expansion is important, we further demonstrate that when women do a majority of farm work or manage the farm, their farms are equally efficient as farms managed by men. 相似文献
216.
Roxane M. Limmen B.A.S. Manon Ceelen Ph.D. Udo J.L. Reijnders Ph.D. S. Joris Stomp M.Sc. Koos C. de Keijzer M.Sc. Kees Das Ph.D. 《Journal of forensic sciences》2013,58(2):518-522
The use of narrow‐banded visible light sources in improving the visibility of injuries has been hardly investigated, and studies examining the extent of this improvement are lacking. In this study, narrow‐banded beams of light within the visible light spectrum were used to explore their ability in improving the visibility of external injuries. The beams of light were induced by four crime‐lites® providing narrow‐banded beams of light between 400 and 550 nm. The visibility of the injuries was assessed through specific long‐pass filters supplied with the set of crime‐lites®. Forty‐three percent of the examined injuries improved in visibility by using the narrow‐banded visible light. In addition, injuries were visualized that were not visible or just barely visible to the naked eye. The improvements in visibility were particularly marked with the use of crime‐lites® “violet” and “blue” covering the spectrum between 400–430 and 430–470 nm. The simple noninvasive method showed a great potential contribution in injury examination. 相似文献
217.
218.
Interorganizational mobility can make a positive contribution both organizationally and government‐wide. Using data from the U.S. Federal Employee Viewpoint Survey, this article seeks to provide a better empirical understanding of the determinants of interorganizational mobility within the U.S. federal government. A specific analytical framework is used, as the intention to take another job within the federal government is nested in the intention to leave the current organization. The results highlight that gender, minority status, length of service, and promotion are determinants of interorganizational mobility within the U.S. federal government. 相似文献
219.
Throughout the 1990s, corruption cases, policy failure and scandals tarnished Belgium's international reputation. In this article, we analyse the effect of federalism and political culture on corruption and policy failures and their impact on the likelihood of such occurrences becoming scandals. Survey material suggests that there are few differences between French- and Dutch-speakers in the perception and tolerance of corruption. We then list a number of variables that can explain corruption in Belgium and argue that the independent effect of federalism is very limited. Next we demonstrate that federalism has played a much more significant role in lowering the risk of policy failure, while at the same time creating a few new vulnerabilities. Finally, we argue that the regional political elites do not often engage in policy learning and frequently put forward federalism as the main solution to the avoidance of policy failure and scandal. In this sense, regional political elites do not seize the opportunity for policy experimentation and transfer that is generally seen as one of the main virtues of a federal system of government. 相似文献
220.