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   15467篇
  免费   259篇
各国政治   591篇
工人农民   1264篇
世界政治   767篇
外交国际关系   602篇
法律   8841篇
中国政治   48篇
政治理论   3542篇
综合类   71篇
  2020年   102篇
  2019年   137篇
  2018年   1418篇
  2017年   1356篇
  2016年   1184篇
  2015年   191篇
  2014年   157篇
  2013年   849篇
  2012年   350篇
  2011年   1080篇
  2010年   1157篇
  2009年   732篇
  2008年   897篇
  2007年   861篇
  2006年   204篇
  2005年   229篇
  2004年   331篇
  2003年   311篇
  2002年   193篇
  2001年   225篇
  2000年   192篇
  1999年   166篇
  1998年   111篇
  1997年   111篇
  1996年   96篇
  1995年   110篇
  1994年   102篇
  1993年   84篇
  1992年   122篇
  1991年   152篇
  1990年   135篇
  1989年   147篇
  1988年   134篇
  1987年   155篇
  1986年   145篇
  1985年   156篇
  1984年   146篇
  1983年   151篇
  1982年   108篇
  1981年   97篇
  1980年   90篇
  1979年   102篇
  1978年   83篇
  1977年   70篇
  1976年   70篇
  1975年   64篇
  1974年   70篇
  1973年   69篇
  1972年   55篇
  1969年   57篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Professional baseball players are often thought of as making multi-million-dollar salaries, but most professional baseball players have recently made under $15,000 a year. Minor league players toiled under an onerous system resulting from baseball's judicially created antitrust exemption and lobbying efforts that exempted them from minimum wage and overtime. These factors allowed teams to impose a uniform player contract (UPC) on players with numerous unconscionable provisions for years. However, a late-night Tweet in August of 2022 sent shockwaves through the sports and labor world, announcing that the Major League Baseball Players Association (MLBPA) was sending out authorization cards to represent minor league players. After years of fighting to maintain the authority to impose conditions on minor league players, through lobbying and litigation, Major League Baseball (MLB) turned over a new leaf and recognized the unionization of minor league players under the MLBPA less than three weeks later. In light of this long sought-after recognition, this article takes a novel approach. First, it provides historical context for baseball's unique ability to impose working conditions on minor leaguers without significant concern for legal ramifications. Second, it provides an overview of the doctrine of contractual unconscionability and analyzes the prior UPC as an unconscionable agreement. Finally, it details the historic unionization process and makes detailed recommendations to ameliorate the unconscionable conditions minor league players have faced when they negotiate with MLB owners to draft their initial collective bargaining agreement.  相似文献   
2.
ABSTRACT

Since the late 20th century, the federal government has regulated colleges’ and universities’ handling of campus sexual and gender-based violence (CSGBV). Although the arc of history has bent toward establishing greater protections for victims of such violence, new proposed regulation by the U.S. Department of Education under the Trump administration focuses more heavily on ensuring due process rights for students accused of CSGBV. Most recently, in November 2018, U.S. Secretary of Education, Betsy DeVos submitted a proposed rule change to the regulation of Title IX of the Education Amendments of 1972. This article provides the historical context for this most recent proposed federal regulation of CSGBV and discusses the criticism of this proposal that, if it is implemented, students would become less safe in the ivory tower.  相似文献   
3.
An important component of crime scene reconstruction is bloodstain pattern analysis (BPA). Where BPA concerns impact patterns, estimating the area of origin is critical information for scene reconstruction. Traditionally, this is achieved by measuring individual bloodstains and performing trigonometric calculations; however, 3D scanning has been proposed as a viable alternative for overcoming logistical and practical concerns with the manual method. Therefore, this project aimed to establish whether the FARO Focus 3D scanner and FARO Zone 3D software can improve the accuracy of area of origin estimates relative to the manual method. We created a series of eight bloodstain impact patterns and performed paired analysis using the two methods to estimate areas of origin for each pattern. Our data suggested that FARO-derived estimates were generally more accurate than using the manual method. FARO-estimated heights of origin areas were generally closer to the true distance. Both methods underestimated the distance from the wall for most patterns originating 150mm or greater from the wall, but overestimated distances for patterns originating closer to the wall. The degree to which distances were underestimated increased significantly the further the blood source was from the wall and was greater for FARO-derived estimates. The results of this research contribute to the validation of these instruments for operational implementation for BPA and should be considered alongside the practical benefits of 3D scanning relative to manual methods. Further, 3D scanning can provide reliable BPA reconstruction documentation for technical review and court presentation.  相似文献   
4.
Abstract

Since March 2015, the Saudi-led military intervention in Yemen has had devastating consequences for the country, its people and its rich cultural heritage. This article traces the responses of the world’s foremost multilateral body concerned with heritage promotion and protection, the United Nations Educational, Scientific and Cultural Organization (UNESCO). Drawing on extensive interviews, archival research and long-term ethnographic research on UNESCO itself and, more specifically, its responses to the war in Yemen, it documents UNESCO’s profound failures in protecting Yemen’s heritage and in confronting the Saudi-led coalition. To do so, the article utilises the framework of ‘gridlock’ to analyse how and why multilateral bodies such as UNESCO become hamstrung in confronting powerful member states in conflict. The article concludes by arguing that UNESCO’s failures in Yemen hold powerful lessons about the role of multilateral institutions in addressing conflict.  相似文献   
5.
6.
7.
Abstract

Goals in the public sector are complex and managers can face situations in which pursuing one legitimate goal necessitates performance trade-offs in other areas. This study tests how knowledge of legitimate performance trade-offs shapes the perception of red tape. Using a vignette experimental design and a sample of university students, between group t-tests and regression analyses suggest that, when evaluating increased rule burden, individuals that are provided with information about how objectively burdensome rules serve alternative values such as equity and effectiveness associate them with lower levels of red tape. A series of Monte Carlo simulations suggest that this effect is substantial.  相似文献   
8.
9.
10.
Restriction fragment length polymorphism (RFLP) analysis for the purpose of individualization is now being used in casework in the People's Republic of China. This report describes the use of the multilocus minisatellite probe 33.15 to solve three cases, including two homicides and a rape. In the third case, fetal tissue was analyzed to prove that the alleged rapist was, in fact, the father. In each case, analysis of deoxyribonucleic acid (DNA) resulted in a positive match. The probability of chance association of the DNA fingerprint was calculated as 5.6 x 10(-12), which is similar to the figures reported in the literature.  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