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   454篇
  免费   13篇
各国政治   26篇
工人农民   22篇
世界政治   61篇
外交国际关系   32篇
法律   196篇
中国政治   3篇
政治理论   114篇
综合类   13篇
  2023年   2篇
  2021年   3篇
  2020年   7篇
  2019年   17篇
  2018年   10篇
  2017年   12篇
  2016年   18篇
  2015年   8篇
  2014年   12篇
  2013年   89篇
  2012年   15篇
  2011年   13篇
  2010年   9篇
  2009年   9篇
  2008年   24篇
  2007年   14篇
  2006年   15篇
  2005年   7篇
  2004年   18篇
  2003年   14篇
  2002年   10篇
  2001年   7篇
  2000年   10篇
  1999年   3篇
  1998年   8篇
  1997年   9篇
  1996年   4篇
  1995年   5篇
  1994年   8篇
  1993年   7篇
  1992年   4篇
  1991年   5篇
  1990年   3篇
  1989年   4篇
  1988年   2篇
  1987年   8篇
  1986年   4篇
  1985年   5篇
  1984年   5篇
  1983年   5篇
  1982年   5篇
  1981年   5篇
  1980年   6篇
  1978年   2篇
  1977年   3篇
  1974年   2篇
  1973年   2篇
  1970年   2篇
  1968年   2篇
  1966年   1篇
排序方式: 共有467条查询结果,搜索用时 15 毫秒
181.
182.
With the increasing availability of statistics describing the occupational structures of different industries manpower forecasters are beginning to develop more sophisticated models. The economic rationale of such models has tended to be obscured by the mathematics involved and an understandable eagerness to put the data to use in forecasting. In addition, the systematic testing of the explanatory power of these models has been neglected where it has not been hampered by the shortage of data series. The RAS model has featured prominently in manpower discussions and this paper attempts an evaluation of its predictive ability and economic interpretation subject to the limits imposed by the data available for the British engineering industry. It is argued that such a model plays a useful initial role in the development of models for sectoral manpower forecasting but must lead on to a more sensitive treatment of the labour market and the decision problem of investing in human capital.  相似文献   
183.
184.
Thirteen cases of infective endocarditis (IE) diagnosed for the first time at autopsy or, in those patients with a previous diagnosis of IE, not thought to be active at the time of death, are presented. Of the six patients who died within 24 h of the onset of symptoms, two died of obstruction of a valve orifice, two died of sepsis, one died of sepsis and alcoholic cardiomyopathy, and one died of a coronary artery embolus. Of the five patients with symptoms lasting more than 24 h, three died of sepsis and congestive heart failure. One died from sepsis alone and one died from congestive heart failure (CHF). In two patients whose duration of symptoms is unknown, one died of sepsis and CHF, and in the other the mechanism of death is unknown. Predisposing factors present in 11 of 13 patients included alcoholism (three), intravenous (IV) drug abuse (three), prosthetic valves (three), aortic stenosis (two), past rheumatic fever (one), and nonstenotic congenitally bicuspid valves (two). The reasons for no antemortem diagnosis were a missed or incorrect clinical diagnosis in three patients seen by a physician shortly before death, no signs or symptoms or found dead (four), non-specific signs and symptoms (three), refusal of medical treatment (one), and a solitary lifestyle (one); there was insufficient information about one patient. Individuals with needle tracks, generalized petechiae. Osler's nodes, splinter hemorrhages, intravenous catheters, pacemaker wires, and infected aortic-valve (A-V) shunts are at risk of IE. Blood and the vegetations should be cultured. The attending physician should be notified of the diagnosis in such cases.  相似文献   
185.
186.
187.
188.
189.
The Village Administrations (VAs) created by the Tanzanian state in the 1970s have been regarded as new state apparatuses intended to facilitate control over a recalcitrant peasantry. Field research in Dodoma revealed two kinds of factions competing for their control: Christians, who co‐operated with higher level state apparatuses in establishing working institutional structures, and Traditionalists, who sought to reconstruct the VA as an entity performing predominantly ritual functions and, by tactful non‐compliance, to insulate households from the demands of the state. If the VA is to be regarded as a state apparatus then it must be recognised that it has substantial autonomy, conditioned by its internal constitution as a political field.  相似文献   
190.
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