全文获取类型
收费全文 | 373篇 |
免费 | 15篇 |
专业分类
各国政治 | 21篇 |
工人农民 | 12篇 |
世界政治 | 38篇 |
外交国际关系 | 26篇 |
法律 | 175篇 |
中国共产党 | 1篇 |
中国政治 | 2篇 |
政治理论 | 111篇 |
综合类 | 2篇 |
出版年
2023年 | 5篇 |
2021年 | 5篇 |
2020年 | 13篇 |
2019年 | 8篇 |
2018年 | 10篇 |
2017年 | 10篇 |
2016年 | 10篇 |
2015年 | 6篇 |
2014年 | 6篇 |
2013年 | 44篇 |
2012年 | 5篇 |
2011年 | 4篇 |
2010年 | 11篇 |
2009年 | 10篇 |
2008年 | 9篇 |
2007年 | 15篇 |
2006年 | 7篇 |
2005年 | 10篇 |
2004年 | 13篇 |
2003年 | 10篇 |
2002年 | 12篇 |
2001年 | 17篇 |
2000年 | 9篇 |
1999年 | 7篇 |
1998年 | 9篇 |
1997年 | 4篇 |
1996年 | 6篇 |
1995年 | 5篇 |
1994年 | 5篇 |
1993年 | 5篇 |
1992年 | 7篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 9篇 |
1988年 | 7篇 |
1987年 | 5篇 |
1986年 | 6篇 |
1985年 | 7篇 |
1984年 | 4篇 |
1983年 | 4篇 |
1982年 | 3篇 |
1981年 | 6篇 |
1980年 | 9篇 |
1979年 | 3篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1976年 | 2篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1966年 | 1篇 |
排序方式: 共有388条查询结果,搜索用时 15 毫秒
21.
Public Choice - This essay demonstrates that if an organization uses a price-decomposition algorithm to solve a decentralized resource allocation problem, in which rewards are those of a Groves... 相似文献
22.
In 1983 the Government of Kenya embarked on an accelerated programme of decentralization known as ‘District Focus’. This exercise in devolution is aimed at promoting more effective and efficient use of scarce domestic resources through efforts to strengthen planning capacity at the district level, improve horizontal integration among operating ministry field agents, and expand authority to district heads of operating ministries for managing financial and procurement aspects of local project implementation. Given the importance of this initiative to the economic growth of Kenya and the current search for administrative reforms that could help accelerate rural development in Africa, District Focus merits close attention by development experts. This article reviews the historical background, content, and implementation progress of District Focus. 相似文献
23.
24.
25.
26.
Michael D. Cohen 《Asian Security》2020,16(3):323-342
ABSTRACT What causes variation in the foreign policies of U.S. allies regarding their desired U.S. military role in their region and their troop commitments to U.S. military interventions? This paper addresses this question through documenting and explaining the sources of variation in Australia’s foreign policies regarding these issues over four decades. Treating the two major political parties in Australia and their respective leaders who self-select into them as endogenous, the paper argues that Australian foreign policy, whilst always supportive of the U.S. alliance, has systematically varied. This variation has correlated with the political party in power while the late Cold War and post-Cold War balances of power remained constant. While the Labor party has only been willing to send combat troops to large U.S. military interventions when the latter have a supporting United Nations Security Council Resolution, the conservative Liberal party has been willing to military intervene without this multilateral support. The Labor party, unlike the Liberal party, has also frequently proposed the formation and consolidation of multilateral regional institutions. These preferences render the U.S. to have been necessary for the Labor Party but sufficient for the Liberal party. Future Sino-U.S. armed conflict would provide a harder test of these hypotheses. 相似文献
27.
28.
29.
30.
Massonnet G Buzzini P Jochem G Stauber M Coyle T Roux C Thomas J Leijenhorst H Van Zanten Z Wiggins K Russell C Chabli S Rosengarten A 《Journal of forensic sciences》2005,50(5):1028-1038
A collaborative study on Raman spectroscopy was carried out by members of the ENFSI (European Network of Forensic Science Institutes) European Fibres Group (EFG) on three dyed fibers: two red acrylics and one red wool. Raman instruments from six different manufacturers were tested as well as nine different laser wavelengths ranging from blue (lambda = 458 nm) to near infrared-NIR (lambda = 1064 nm). This represents the largest comparison study of Raman analytical parameters carried out on identical fiber samples. For the chosen fiber and dye samples, red lasers (lambda = 633 and 685 nm) gave the poorest spectral quality whereas blue (458 nm), green (514 nm) and near infrared lasers (785, 830 and 1064 nm) provided average results. Blue (488 nm) and green lasers (532 nm) globally gave the best quality spectra. Fluorescence problems were often encountered with some of the excitation wavelengths and therefore a flexible Raman instrument equipped with different lasers can be recommended to measure forensic fiber samples. The instrument should also be equipped with a Raman microscope in order to be able to focus on a single fiber. This study shows that Raman spectroscopy usually enables the identification of the main dye present in a colored fiber; however, minor dye components are much more difficult to detect. SERRS (Surface Enhanced Resonance Raman Scattering) techniques give an improvement of the dye's spectral intensity but no spectral improvement was observed for the two red acrylic and red wool fibers tested. 相似文献