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   997篇
  免费   73篇
各国政治   94篇
工人农民   100篇
世界政治   68篇
外交国际关系   57篇
法律   513篇
中国政治   15篇
政治理论   215篇
综合类   8篇
  2023年   4篇
  2022年   4篇
  2021年   11篇
  2020年   32篇
  2019年   40篇
  2018年   42篇
  2017年   57篇
  2016年   44篇
  2015年   41篇
  2014年   34篇
  2013年   127篇
  2012年   32篇
  2011年   49篇
  2010年   37篇
  2009年   31篇
  2008年   38篇
  2007年   23篇
  2006年   24篇
  2005年   31篇
  2004年   27篇
  2003年   23篇
  2002年   20篇
  2001年   23篇
  2000年   24篇
  1999年   20篇
  1998年   12篇
  1997年   11篇
  1996年   12篇
  1995年   10篇
  1994年   15篇
  1993年   12篇
  1992年   14篇
  1991年   13篇
  1990年   10篇
  1989年   16篇
  1988年   7篇
  1987年   13篇
  1986年   8篇
  1985年   10篇
  1984年   10篇
  1983年   5篇
  1982年   6篇
  1981年   7篇
  1980年   8篇
  1978年   3篇
  1977年   3篇
  1976年   3篇
  1968年   4篇
  1967年   3篇
  1966年   2篇
排序方式: 共有1070条查询结果,搜索用时 15 毫秒
51.
Abstract: The effects of the Electronic Lodgment Service on relations between tax agents and the Australian Taxation Office provide evidence for both the value and limitations of integrating information technology innovation with regulatory reform strategy. IT innovations such as ELS can promote cooperative regulation. The limitations of this achievement are largely limitations of regulatory context and strategy.  相似文献   
52.
Teenagers' perspective of disagreement over family finances and related factors were investigated. Involvement of teenagers in employment and percentage of earnings kept for personal use were examined. Reasons for employment affected disagreement over finances, whereas family income had no important effect on disagreement over finances in multivariate analysis. Disagreement over finances was important in explaining variation in satisfaction with money management in the family and in satisfaction with family life. Results have implication for reducing stress in family life and for contributing to theory on family resource management and adolescent development.This study is part of an interregional Agricultural Experiment Station Research Project NC-128 Quality of Life as Affected by Area of Residence. Cooperating states: Arizona, California, Colorado, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, Nevada, Ohio, and Texas.Received Ph.D. from Purdue University. Research interests include family economics.Received B.S. from Cornell. Research interests include consumer and family economics.  相似文献   
53.
54.
55.
56.
57.
58.
Recent criminal acts in the United Kingdom, United States and other countries have demonstrated the dangers to public safety from the criminal use of improvised explosives on a large scale. Four sets of trials were carried out over four years, partly in collaboration with the United States Federal Bureau of Investigation, involving the firing of large bombs, mostly fertilizer based. The principal objectives of the firings were to measure the physical effects of the explosions upon objects representative of those that would be found at a real bomb scene and to recover any chemical traces deposited on these objects. The results are intended for use as an aid in determining the approximate size and type of an explosive employed in a terrorist attack. This paper describes the background behind the trials, the procedures for preparation of witness materials and charges, and the collection and analysis of physical and chemical evidence.  相似文献   
59.
During recent years, more state and local governments have made provisions in their budgets for establishing and maintaining contingency reserve funds. A recent study by the National Conference of State Legislatures(NCSL) found that over half of all states now have such funds. The basic purpose of these contingency reserve funds, also referred to as "rainy day" funds, is to insulate governmental budgets from unexpected fiscal disruptions brought about by such factors as unanticipated revenue shortfalls and expenditure overruns. What have received less attention, however, are the criteria which governments need to use in deciding whether to establish such contingency reserves in the first place, and if so, how large these reserves should optimally be. This article explores these two issues, using the State of California as an illustrative case study  相似文献   
60.
Selenium is a ubiquitous element in the environment essential to the human diet and widely utilized in industrial processes. Fatal human selenium intoxication is rare. The authors report a case in which investigators recovered a bottle of gun-bluing agent beside a 24-year-old man. He exhibited signs and symptoms typical of acute selenium intoxication presenting with nausea and vomiting, followed by pulmonary edema and rapid cardiovascular collapse approximately 3 to 4 h after ingestion. Classic electrocardiographic (EKG) changes, which have been reported to occur in acute selenium intoxication, included sinus tachycardia with ST wave alteration. Toxicological results confirmed elevated blood and tissue concentrations. The cause of death was ascribed to acute selenium intoxication, which ensued rapidly after oral consumption. The manner of death was suicide. This case report, which presents an overview of acute and chronic selenium poisoning, underscores the value of thorough toxicologic analyses of tissue and body fluids in humans.  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