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   810篇
  免费   18篇
各国政治   20篇
工人农民   86篇
世界政治   66篇
外交国际关系   27篇
法律   383篇
中国政治   16篇
政治理论   213篇
综合类   17篇
  2022年   7篇
  2021年   2篇
  2020年   11篇
  2019年   11篇
  2018年   17篇
  2017年   13篇
  2016年   25篇
  2015年   17篇
  2014年   19篇
  2013年   107篇
  2012年   33篇
  2011年   25篇
  2010年   24篇
  2009年   11篇
  2008年   32篇
  2007年   35篇
  2006年   37篇
  2005年   43篇
  2004年   35篇
  2003年   29篇
  2002年   31篇
  2001年   16篇
  2000年   17篇
  1999年   9篇
  1998年   12篇
  1997年   6篇
  1996年   5篇
  1995年   10篇
  1994年   11篇
  1993年   10篇
  1992年   12篇
  1991年   15篇
  1990年   13篇
  1989年   9篇
  1988年   20篇
  1987年   12篇
  1986年   12篇
  1985年   8篇
  1984年   5篇
  1983年   4篇
  1982年   7篇
  1981年   5篇
  1980年   7篇
  1979年   7篇
  1978年   6篇
  1977年   4篇
  1976年   4篇
  1975年   6篇
  1974年   3篇
  1973年   2篇
排序方式: 共有828条查询结果,搜索用时 15 毫秒
221.
Despite the popularity of community-based programs, many clients are not able to be sustained in that environment. This study examines what began as the same population, specifically receivers of formally provided home based services, some of whom were later institutionalized and then compared to their former colleagues. Variables are related to the demographic, physical and social characteristics of each population, compared to each other as well as studied over a three year period to determine what elements changed to increase risk of institutionalization. Race, reduced degree of mobility and cognitive impairment are shown to be the primary predictors.  相似文献   
222.
223.
224.
225.
When states face an international cooperation problem requiring enforcement, when do they decide to make that enforcement formal versus informal? I introduce a research design for investigating how informal mechanisms might be relevant to formal international agreements. I present an overall theory of punishment provisions and a set of hypotheses about whether any needed punishments will be formalized or not. This theory gives rise to a two-part empirical analysis conducted on a large-n dataset. First, the presence of enforcement mechanisms in agreements is predicted, and, second, those cases that are “misclassified”—ones in which the model predicts the presence of such mechanisms, but the agreements lack them—are analyzed. These misclassified agreements, candidates for informal enforcement, are characterized by regime heterogeneity and military asymmetries among parties. Case study evidence supports the results.  相似文献   
226.
This paper suggests that the combination of health care restructuring, legislation expanding, and redefining a regulated health profession in Ontario, Canada, has reduced medical dominance and increased managerial dominance of health care professionals. The paper focuses on nurses and doctors, and examines the effects of the Regulated Health Professions Act and the changes occurring within the health care system on their political, clinical, and economic autonomy. It argues that there has been a redistribution of power in the health care sector and suggests that the present autonomy of health care professionals is limited, and may be limited even further as the technical side of health care is prioritized over the indeterminate side.  相似文献   
227.
This study presents the fatal case of a young man who was admitted to the ICAU due to sudden cardiac arrest. An interview revealed that the patient had taken some unspecified crystals. From the moment of admission, his condition deteriorated dramatically as a result of increasing circulatory insufficiency. After a few hours, sudden cardiac arrest occurred again and the patient was pronounced dead. In the course of a medicolegal autopsy, samples of biological material were preserved for toxicology tests and histopathological examination. The analysis of samples using the LC‐MS/MS technique revealed the presence of α‐PVP in the following concentrations: blood—174 ng/mL, urine—401 ng/mL, brain—292 ng/g, liver—190 ng/g, kidney—122 ng/g, gastric contents—606 ng/g. The study also presents findings from the parallel histopathological examination. Based on these findings, cardiac arrest secondary to intoxication with alpha‐PVP was determined as the direct cause of the patient's death.  相似文献   
228.
This study investigated the various factors affecting DNA profiling from DNA recovered from fingerprints deposited on paper before and after fingerprint enhancement treatments. The DNeasy® plant mini kit (QIAGEN®) was found to improve DNA recovery from paper by over 150% compared with the QIAamp® mini kit. A significant decrease in the amount of DNA recovered was observed following treatment with DFO and/or Ninhydrin. This decrease in yield did not have a comparably significant effect on the quality of the SGM Plus™ profiles. Furthermore, this study found that whilst certain paper types, such as newspaper, magazine and filter paper allowed for the good recovery of DNA, common office paper and white card, strongly interfered with the recovery of DNA resulting in poor quality profiles.  相似文献   
229.
This paper provides a comparative snapshot of the current state of the law in the US and UK with respect to potential liability of university and college students for use (and misuse) of social networking sites. It reviews the limited case law on this topic, highlights the differences in the two nations’ laws of defamation and the various possible legal claims available to individuals allegedly harmed by postings on these social networking sites, and concludes that neither country currently offers a satisfactory legal or quasi-legal model for resolving these disputes.  相似文献   
230.
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