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   576篇
  免费   24篇
各国政治   56篇
工人农民   44篇
世界政治   61篇
外交国际关系   25篇
法律   216篇
中国政治   4篇
政治理论   165篇
综合类   29篇
  2022年   3篇
  2021年   6篇
  2020年   6篇
  2019年   14篇
  2018年   8篇
  2017年   11篇
  2016年   15篇
  2015年   15篇
  2014年   10篇
  2013年   116篇
  2012年   15篇
  2011年   21篇
  2010年   17篇
  2009年   21篇
  2008年   27篇
  2007年   16篇
  2006年   14篇
  2005年   18篇
  2004年   17篇
  2003年   23篇
  2002年   14篇
  2001年   13篇
  2000年   7篇
  1999年   12篇
  1998年   12篇
  1997年   11篇
  1996年   6篇
  1995年   6篇
  1994年   6篇
  1993年   6篇
  1992年   7篇
  1991年   10篇
  1990年   5篇
  1989年   12篇
  1988年   7篇
  1987年   6篇
  1986年   8篇
  1985年   4篇
  1984年   7篇
  1983年   4篇
  1982年   3篇
  1981年   5篇
  1980年   6篇
  1979年   5篇
  1977年   3篇
  1976年   4篇
  1974年   4篇
  1972年   2篇
  1971年   2篇
  1970年   3篇
排序方式: 共有600条查询结果,搜索用时 31 毫秒
71.
In its final months the outgoing Thompson Liberal Ministry was largely pre-occupied with the implementation of its New Directions strategy. It introduced a public service bill in December to bring about greater effectiveness in the public service and ensure that its policy priorities were understood, thus complementing the Effectiveness Review Committee already set up, and it began a review of the three central coordinating agencies, the Public Service Board, the Treasury and the Department of the Premier, with an independent American consultant. The thrust of these three measures was to advise the government on proposals to set up new departments, relocate personnel and manpower resources, to set up programs for effectiveness reviews, and to bring forward amendments to the Public Service Act of 1974 which had followed Sir Henry Bland's inquiry in the early 1970s. These were intended to give the Public Service Board extended powers to allow it to conduct effectiveness reviews into statutory authorities, to extend Board employment powers to such authorities and to bring them into the public service framework, ensuring a more cohesive and less fragmented State public service. Senior staff could now be employed on term appointments, with performance-oriented objectives, giving greater flexibility at the top. And finally, the Board was to have power to become involved in specific industrial issues at the departmental level, sharpening its current generalized industrial powers.  相似文献   
72.
73.
74.
75.
Significant changes in both the capacity and the content of attention emerge during adolescence. Part II of this two-part article argues that a central task of adolescence is to utilize increased information-processing capacities in order to develop attentional habits which shape interests, provide enjoyment, and avoid boredom. Reports of chronic boredom or of extreme efforts to escape from boredom during adolescence may signify substantial difficulty in forming the attentional habits required for developing a separate identity. When adolescents are bored, they may resort to habits of attention and enjoyment which have deleterious personal, social, and ecological consequences. Further study of attention in adolescence may help to explore preventive educational approaches to the problem of boredom and of “pathological” solutions to boredom.  相似文献   
76.
77.
Forensic analysis of bicomponent fibers using infrared chemical imaging   总被引:2,自引:0,他引:2  
The application of infrared chemical imaging to the analysis of bicomponent fibers was evaluated. Eleven nominally bicomponent fibers were examined either side-on or in cross-section. In six of the 11 samples, infrared chemical imaging was able to spatially resolve two spectroscopically distinct regions when the fibers were examined side-on. As well as yielding characteristic infrared spectra of each component, the technique also provided images that clearly illustrated the side-by-side configuration of these components in the fiber. In one case it was possible to prepare and image a cross-section of the fiber, but in general the preparation of fiber cross-sections proved very difficult. In five of the 11 samples, the infrared spectra could be used to identify the overall chemical composition of the fibers, according to a published classification scheme, but the fiber components could not be spatially resolved. Difficulties that are inherent to conventional "single-point" infrared spectroscopy, such as interference fringing and sloping baselines, particularly when analyzing acrylic type fibers, were also encountered in the infrared chemical image analysis of bicomponent fibers. A number of infrared sampling techniques were investigated to overcome these problems, and recommendations for the best sampling technique are given. Chemical imaging results were compared with those obtained using conventional fiber microscopy techniques.  相似文献   
78.
79.
80.
VICTORIA     
The Victorian Liberal Premier, Richard Hamer, in adjourning the 1980 parliamentary session with the traditional “Christmas felicitations”, made special reference to the record number of sitting days and the longer daily average of sitting hours achieved. Labor Opposition Leader Frank Wilkes in turn drew attention to the total of 126 bills introduced during the spring session, of which 101 had been instigated by the government and 25 by private members. Such an arduous and concentrated parliamentary schedule has obvious policy implications, but also prompts a query about its administrative consequences. To what extent was the mass of legislation dealt with by the last Victorian State parliament directed towards administrative ends as well as to the Liberal government's more obvious political goals?  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