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   5263篇
  免费   156篇
各国政治   201篇
工人农民   249篇
世界政治   373篇
外交国际关系   197篇
法律   3351篇
中国政治   28篇
政治理论   994篇
综合类   26篇
  2023年   41篇
  2021年   34篇
  2020年   64篇
  2019年   86篇
  2018年   130篇
  2017年   117篇
  2016年   140篇
  2015年   73篇
  2014年   99篇
  2013年   499篇
  2012年   125篇
  2011年   149篇
  2010年   111篇
  2009年   129篇
  2008年   131篇
  2007年   136篇
  2006年   141篇
  2005年   93篇
  2004年   113篇
  2003年   124篇
  2002年   98篇
  2001年   212篇
  2000年   220篇
  1999年   156篇
  1998年   69篇
  1997年   67篇
  1996年   57篇
  1995年   56篇
  1994年   66篇
  1993年   58篇
  1992年   128篇
  1991年   110篇
  1990年   140篇
  1989年   126篇
  1988年   138篇
  1987年   134篇
  1986年   104篇
  1985年   121篇
  1984年   84篇
  1983年   80篇
  1982年   64篇
  1981年   53篇
  1980年   44篇
  1979年   58篇
  1978年   38篇
  1976年   32篇
  1975年   30篇
  1974年   42篇
  1973年   36篇
  1970年   31篇
排序方式: 共有5419条查询结果,搜索用时 8 毫秒
121.
122.
123.
A state law has placed an obligation on the criminal investigation laboratories to screen and quantitate all preparations, both pharmaceutical and illicit, that fall under the provisions of "Excepted Substances." Without complete screens on these preparations, there is room for erroneous indictments as well as possible acquittals on technicalities.  相似文献   
124.
The barriers to terminating federal research and development vary with the type of program (manpower resource creation, basic or applied research, hardware development) and the functional sector in which it is lodged (defense or civilian). Each has a public/private constituency of sponsors and performers. Some constituencies are much more potent than others. Hence, to kill an R&D program, one must weaken the constituency behind it. Useful strategies for would-be terminators include decremental funding and the amalgamation of competing R&D programs within the same agency.  相似文献   
125.
While its economic dynamism stimulates continued growth in Asia, China's increasing demand for energy is creating intense competition, particularly with Japan, over international sources of supply. Domestic fields have generally been disappointing, as have efforts to pipe gas from Central Asia and Russia to the east coast. Consequently, China is not only paying greater attention to potential petroleum resources in the East and South China Seas, but also considering the vulnerability of its sea-lanes to the Middle East and beyond. Its need to diversify has promoted closer relations with Central Asia, the Middle East, and the oil producing countries of Africa and Latin America, but the jury is out on whether China's concerns for secure energy supply will lead to international cooperation against terrorism or fuel the already heated competition for oil and gas. As China continues to assure its future energy security in Asia and many areas of the world, sustained bilateral and multilateral diplomacy to reconcile disputes and avoid conflict will become more important than ever.  相似文献   
126.
Current approaches examining the effect of institutions on policy processes have difficulty in explaining the results of the legislative process of codecision between the European Parliament and Council within the European Union. The formal Treaty changes that gave rise to codecision have, in turn, given rise to a plethora of informal institutions, in a process that is difficult to understand using dominant modes of analysis. This article provides a framework for analyzing the relationship between formal and informal institutions, showing how the two may be recursively related. Formal institutional change at a particular moment in time may give rise to informal institutions, which may, in turn, affect the negotiation of future formal institutions. The article applies this framework to the codecision process, showing how the codecision procedure has led to the creation of informal institutions and modes of decision-making, which have affected subsequent Treaty negotiations. Through strategic use of the relationship between formal and informal institutions, the European Parliament has been successful in advancing its interests over time and increasing its role in the legislative process.  相似文献   
127.
This article determines the conditions under which theSouthern countries should act together, or separately, whilenegotiating with the North about climate change policy andabout the conditions for future Southern engagement. The papermodels the international negotiations with complete and withasymmetric information in a dynamic framework. Results showthat, depending on their characteristics, the differentplayers can obtain benefits delaying the moment of theagreement.  相似文献   
128.
In comparative analysis of welfare states, there is a consensus that mature welfare state systems have been confronted, for some considerable time, with substantial pressure towards re-structuring and that, as a result, they actually have undertaken several and varied modifications. This articles aims at exploring and analysing these developments in Austria and Germany from a comparative point of view. The analysis concentrates on two vital fields of social policy: old-age insurance and unemployment insurance. Especially in respect of the development of social policy and regarding important characteristics of the two welfare state systems, both countries traditionally show a large degree of resemblance to each other. Many similarities remained to exist during the phase of growing pressures on the welfare state, whereas at the same time it is evident that differences between the two countries increased. The respective actual developments will be interpreted in the light of corresponding theories of comparative welfare state research and classified as gradual and structural changes.  相似文献   
129.
Administrative data from North Carolina are used to explore the extent to which that state's relatively sophisticated school‐based accountability system has exacerbated the challenges that schools serving low‐performing students face in retaining and attracting high‐quality teachers. Most clear are the adverse effects on retention rates, and hence on teacher turnover, in such schools. Less clear is the extent to which that higher turnover has translated into a decline in the average qualifications of the teachers in the low‐performing schools. Other states with more primitive accountability systems can expect even greater adverse effects on teacher turnover in low‐performing schools. © 2004 by the Association for Public Policy Analysis and Management.  相似文献   
130.
Meyers  R. T. 《Policy Sciences》1998,31(4):371-384
Advocates of regulatory relief propose a budget that would annually cap regulatory costs. But emulating fiscal budgeting would be much more difficult than they envision. An arbitrary macrobudgetary constraint would have to be selected, and the potential scope of the regulatory budget would be vast. The process of regulatory budgeting would be very-time consuming, and could increase micromanagement by the Congress. Estimating regulatory costs would be challenging, and ignoring regulatory benefits would be unfair and inefficient. A preferable alternative to regulatory budgeting would be to expand the Government Performance and Results Act to include cost-effectiveness reviews for regulations.  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