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   1932篇
  免费   126篇
各国政治   127篇
工人农民   86篇
世界政治   159篇
外交国际关系   136篇
法律   862篇
中国政治   11篇
政治理论   652篇
综合类   25篇
  2023年   16篇
  2022年   18篇
  2021年   21篇
  2020年   66篇
  2019年   70篇
  2018年   78篇
  2017年   113篇
  2016年   95篇
  2015年   67篇
  2014年   68篇
  2013年   241篇
  2012年   86篇
  2011年   77篇
  2010年   73篇
  2009年   71篇
  2008年   82篇
  2007年   74篇
  2006年   68篇
  2005年   62篇
  2004年   60篇
  2003年   46篇
  2002年   53篇
  2001年   37篇
  2000年   31篇
  1999年   29篇
  1998年   30篇
  1997年   16篇
  1996年   22篇
  1995年   26篇
  1994年   18篇
  1993年   14篇
  1992年   16篇
  1991年   22篇
  1990年   17篇
  1989年   15篇
  1988年   12篇
  1987年   12篇
  1986年   17篇
  1985年   17篇
  1984年   13篇
  1983年   5篇
  1982年   14篇
  1981年   6篇
  1980年   14篇
  1979年   8篇
  1978年   4篇
  1977年   6篇
  1972年   4篇
  1967年   5篇
  1966年   3篇
排序方式: 共有2058条查询结果,搜索用时 15 毫秒
961.
When the US President's Emergency Plan for AIDS Relief (PEPFAR)-supported Supply Chain Management System (SCMS) programme began working in Ethiopia in 2006, the estimated population of people living with HIV exceeded one million, while only 24,000 were on treatment and only 50 treatment sites were in operation. SCMS and other key partners entered into this context to support the Ethiopian government in significantly strengthening the public health supply chain system, with the aim of increasing the availability and accessibility of pharmaceutical products. The country now has 1,047 treatment sites and is nearing complete treatment coverage. This article discusses how priorities were set among many competing challenges from 2006 until 2014, and how the four-step strategy of build, operate, transfer, and optimise has resulted in a successful partnership.  相似文献   
962.
We study how policymakers play public goods games, and how their behavior compares to the typical subjects we study, by conducting parallel experiments on college undergraduates and American state legislators. We find that the legislators play public goods games more cooperatively and more consistently than the undergraduates. Legislators are also less responsive to treatments that involve social elements but are more likely to respond to additional information that they receive. Further, legislators' fixed characteristics explain much of the variation in how legislators play the game. We discuss the implications of these findings for understanding how institutions affect the provision of public goods.  相似文献   
963.
Few studies have been conducted to determine sex differences in the immature coxal bone and the results were often contradictory. The authors studied sexual dimorphic differences of the pubis using geometric morphometric analysis of five osteometric landmarks recorded by multislice computed tomography (MSCT), based on three‐dimensional reconstructions of 188 children (95 boys, 93 girls) living in the region of Toulouse, southwestern France, ranging in age from 1 to 18 years old. They used geometric morphometric methodology first to test sexual dimorphism in size (centroid size) and shape (Procrustes residuals) and second to examine patterns of shape change with age (development) and size change with age (growth). Based on statistical significance test results, the pubic shape became sexually dimorphic at 13 years old, although visible shape differences were observed as early as 9 years old. This work showed that the trajectories of pubis shape (development) and size (growth) differed throughout ontogeny and between sexes.  相似文献   
964.
This study tests for differences in articular and diaphyseal size and shape of the distal femur and proximal tibia between normal weight and obese individuals, and discusses the effects of obesity on the patterns of sexual dimorphism and secular change in the skeletal morphology of the knee. Measurements of the femur and tibia were recorded for 143 American White adult males and females born in the 20th century. The sample was divided into normal and obese weight categories based on the body mass index. Results show differences between normal weight and obese individuals in the size and shape of the femoral shaft and the medial side of the knee joint, none of which affect the pattern of sexual dimorphism. While changes in skeletal morphology associated with obesity may be observed in recent secular changes, its role is still unclear because of the relatively recent increase in obesity prevalence.  相似文献   
965.
This article examines the applicability of the theory of multidimensional value space by Lynn A. Curtis and the theory of social cultural resistance—Afrocentrism by Daniel E. Georges-Abeyie for explaining so-called Black crime and Black juvenile delinquency in general and Black female crime and Black female juvenile delinquency in particular. It notes that the increase in so-called Black crime and Black juvenile delinquency in general and Black female crime and Black female juvenile delinquency in particular may be illusion, not fact. This article notes that perception, at times illusion, may have, and frequently does have, real outcomes, including criminal justice outcomes and delinquency outcomes. It notes that the so-called Black racial monolith is a fiction that race and ethnicity are distinct entities, as are sex and gender that the so-called Black racial monolith consists of distinct Black ethnic identities. The article notes that Black crime, female and male, and adult and juvenile delinquency may be manifestations of primary psychopathy, secondary psychopathy, and dyssocial psychopathy, as noted in the theory of social cultural resistance—Afrocentrism.  相似文献   
966.
967.
Federal, state, and local governments did not work well together to provide an effective response to Hurricane Katrina. Some of this failure can be attributed to the power struggle between the federal and state governments. The National Incident Management System (NIMS) was designed to foster collaboration among governments and their departments and agencies. However, this system largely failed. To overcome this failure, many have proposed centralizing disaster response in the federal government. Centralized control would damage the basic federal structure of our government as the national government appeals to the ever-present dangers of terrorism and natural disaster to gain permanent primacy in the relationship. The current federal system actually can work better than centralization if leadership and organizational transformation are stressed. The National Incident Management System has many elements in place that can make the federal system of disaster response work if the proper stress on organizational transformation and leadership is applied.

If we ignore the systemic issues and simply replace people or re-assign responsibilities, we may simply fail again in the not too distant future with a different cast of characters.
John R. Harrald, director of the Institute for Crisis, Disaster, and Risk Management,
       George Washington University
U.S. House Committee on Government Reform hearing, September 15, 2005
  相似文献   
968.
Just as the courts must consider the trade‐off between the best interest of the child and parental rights in involuntary termination of parental rights, policy on international adoption must consider the trade‐offs between the best interest of the child and the long‐term interests of the nation. We argue that countries that suspend international adoptions do not maximize social welfare. A consistent national policy to maximize the well‐being of the children and society at large would be to devote resources today to the oversight of international adoption in accord with child protections under the Hague Convention, while at the same time developing a domestic system of care that provides for the physical and developmental needs of orphaned children in the context of permanent families.  相似文献   
969.
This article is about how political regimes should generally be classified, and how Latin American regimes should be classified for the 1945–99 period. We make five general claims about regime classification. First, regime classification should rest on sound concepts and definitions. Second, it should be based on explicit and sensible coding and aggregation rules. Third, it necessarily involves some subjective judgments. Fourth, the debate about dichotomous versus continuous measures of democracy creates a false dilemma. Neither democratic theory, nor coding requirements, nor the reality underlying democratic practice compel either a dichotomous or a continuous approach in all cases. Fifth, dichotomous measures of democracy fail to capture intermediate regime types, obscuring variation that is essential for studying political regimes. This general discussion provides the grounding for our trichotomous ordinal scale, which codes regimes as democratic, semi-democratic or authoritarian in nineteen Latin American countries from 1945 to 1999. Our trichotomous classification achieves greater differentiation than dichotomous classifications and yet avoids the need for massive information that a very fine-grained measure would require.  相似文献   
970.
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