全文获取类型
收费全文 | 10670篇 |
免费 | 318篇 |
专业分类
各国政治 | 593篇 |
工人农民 | 346篇 |
世界政治 | 889篇 |
外交国际关系 | 474篇 |
法律 | 5593篇 |
中国政治 | 54篇 |
政治理论 | 2888篇 |
综合类 | 151篇 |
出版年
2020年 | 133篇 |
2019年 | 147篇 |
2018年 | 217篇 |
2017年 | 218篇 |
2016年 | 240篇 |
2015年 | 164篇 |
2014年 | 198篇 |
2013年 | 1388篇 |
2012年 | 230篇 |
2011年 | 260篇 |
2010年 | 248篇 |
2009年 | 251篇 |
2008年 | 277篇 |
2007年 | 284篇 |
2006年 | 293篇 |
2005年 | 267篇 |
2004年 | 257篇 |
2003年 | 275篇 |
2002年 | 315篇 |
2001年 | 300篇 |
2000年 | 262篇 |
1999年 | 249篇 |
1998年 | 179篇 |
1997年 | 177篇 |
1996年 | 132篇 |
1995年 | 131篇 |
1994年 | 119篇 |
1993年 | 141篇 |
1992年 | 178篇 |
1991年 | 208篇 |
1990年 | 181篇 |
1989年 | 211篇 |
1988年 | 183篇 |
1987年 | 204篇 |
1986年 | 195篇 |
1985年 | 207篇 |
1984年 | 171篇 |
1983年 | 205篇 |
1982年 | 151篇 |
1981年 | 134篇 |
1980年 | 125篇 |
1979年 | 118篇 |
1978年 | 102篇 |
1977年 | 84篇 |
1976年 | 95篇 |
1975年 | 86篇 |
1974年 | 100篇 |
1973年 | 84篇 |
1972年 | 72篇 |
1969年 | 65篇 |
排序方式: 共有10000条查询结果,搜索用时 31 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.
Tim Kalafut Simone Pugh Peter Gill Sarah Abbas Marie Semaan Issam Mansour James Curran Jo-Anne Bright Tacha Hicks Richard Wivell John Buckleton 《Journal of forensic sciences》2022,67(1):128-135
Semaan et al. (J Forensic Res, 2020, 11, 453) discuss a mock case “where eight different individuals [P1 through P8] could not be excluded in a mixed DNA analysis. Even though … expert DNA mixture analysis software was used.” Two of these are the true donors. The LRs reported are incorrect due to the incorrect entry of propositions into LRmix Studio. This forced the software to account for most of the alleles as drop-in, resulting in LRs 60–70 orders of magnitude larger than expected. P1, P2, P4, P5, and P8 can be manually excluded using peak heights. This has relevance when using LRmix which does not use peak heights. We extend the work using the same two reference genotypes who were the true contributors as Semaan et al. (J Forensic Res, 2020, 11, 453). We simulate three two-donor mixtures with peak heights using these two genotypes and analyze using STRmix?. For the simulated 1:1 mixture, one of the non-donors’ LRs supported him being a contributor when no conditioning was used. When considered in combination with any other potential donors (i.e., with conditioning), this non-donor was correctly eliminated. For the 3:1 mixture, all results correctly supported that the non-donors were not contributors. The low-template 4:1 mixture LRs with no conditioning showed support for all eight profiles as donors. However, the results from pair-wise conditioning showed that only the two ground truth donors had LRs supporting that they were contributors to the mixture. We recommend the use of peak heights and conditioning profiles, as this allows better sensitivity and specificity even when the persons share many alleles. 相似文献
3.
4.
5.
Jesse W. Campbell 《Public Performance & Management Review》2020,43(4):741-765
AbstractGoals 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
6.
Professions are granted a form of cartel that enables them to charge more than would arise in a free market on the assumption that they provide better quality and are more trustworthy than free-market actors would be. The theoretical assumption that lawyers are more competent than nonlawyers has given rise to significant formal protections for professions in many jurisdictions. Two testable propositions arise from this theory: (1) lawyers cost more, but (2) they deliver higher quality. It is a testing of these twin propositions that is the subject of this article, with well-triangulated data and a deeper understanding of the theoretical differences between lawyers and nonlawyers. 相似文献
7.
8.
9.
10.