全文获取类型
收费全文 | 7449篇 |
免费 | 215篇 |
专业分类
各国政治 | 323篇 |
工人农民 | 307篇 |
世界政治 | 538篇 |
外交国际关系 | 359篇 |
法律 | 4318篇 |
中国政治 | 62篇 |
政治理论 | 1684篇 |
综合类 | 73篇 |
出版年
2023年 | 56篇 |
2021年 | 53篇 |
2020年 | 90篇 |
2019年 | 144篇 |
2018年 | 186篇 |
2017年 | 186篇 |
2016年 | 203篇 |
2015年 | 141篇 |
2014年 | 194篇 |
2013年 | 798篇 |
2012年 | 215篇 |
2011年 | 211篇 |
2010年 | 168篇 |
2009年 | 202篇 |
2008年 | 201篇 |
2007年 | 219篇 |
2006年 | 211篇 |
2005年 | 159篇 |
2004年 | 189篇 |
2003年 | 192篇 |
2002年 | 162篇 |
2001年 | 261篇 |
2000年 | 258篇 |
1999年 | 196篇 |
1998年 | 100篇 |
1997年 | 95篇 |
1996年 | 91篇 |
1995年 | 89篇 |
1994年 | 100篇 |
1993年 | 93篇 |
1992年 | 153篇 |
1991年 | 137篇 |
1990年 | 152篇 |
1989年 | 157篇 |
1988年 | 157篇 |
1987年 | 156篇 |
1986年 | 123篇 |
1985年 | 139篇 |
1984年 | 115篇 |
1983年 | 103篇 |
1982年 | 84篇 |
1981年 | 76篇 |
1980年 | 64篇 |
1979年 | 64篇 |
1978年 | 51篇 |
1977年 | 35篇 |
1976年 | 39篇 |
1975年 | 44篇 |
1974年 | 51篇 |
1973年 | 44篇 |
排序方式: 共有7664条查询结果,搜索用时 15 毫秒
721.
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
722.
目的探讨低氧、氧化应激中一氧化氮(NO)和氧自由基之间关系及其对培养神经元的损伤机理。方法对培养的新生大鼠神经细胞分别进行低氧、H2O2氧化应激处理和超氧化物歧化酶(SOD)抗氧化应激处理,用比色法等检测培养上清液中NO、丙二醛(MDA)、乳酸脱氢酶(LDH)和SOD含量变化指标。结果与对照组比较,低氧组和H2O2组的NO、LDH、MDA含量均显著增高,SOD含量显著降低,NO与SOD含量变化呈负相关关系。预先给予终浓度为200U/ml的SOD处理,可使神经细胞的NO、LDH和MDA释放量明显减少。各组间NO含量与LDH、MDA含量呈正相关关系。结论低氧、氧化应激促使神经元NO产生增多,NO有增加氧自由基对神经细胞的损伤作用。SOD具有清除氧自由基和减轻NO对神经元的损伤作用。 相似文献
723.
724.
725.
Tali Mendelberg Katherine T. McCabe Adam Thal 《American journal of political science》2017,61(3):606-623
Affluent Americans support more conservative economic policies than the nonaffluent, and government responds disproportionately to these views. Yet little is known about the emergence of these consequential views. We develop, test, and find support for a theory of class cultural norms: These preferences are partly traceable to socialization that occurs on predominantly affluent college campuses, especially those with norms of financial gain, and especially among socially embedded students. The economic views of the student's cohort also matter, in part independently of affluence. We use a large panel data set with a high response rate and more rigorous causal inference strategies than previous socialization studies. The affluent campus effect holds with matching, among students with limited school choice, and in a natural experiment; and it passes placebo tests. College socialization partly explains why affluent Americans support economically conservative policies. 相似文献
726.
Thomas R. Johnson 《Regulation & Governance》2016,10(1):14-28
In China, urban middle class mobilization against potential pollution risk has become increasingly common. This article examines this phenomenon through a detailed case study of a 2009 anti‐waste incinerator campaign in the Panyu District of Guangzhou, which culminated in a sizeable public protest and government U‐turn. This episode revealed tension between the narrow, state‐centered regulatory model fixated on end‐of‐pipe pollution control, and a much broader decentered approach advocated – and practiced – by project opponents, which incorporated public consultation and much greater emphasis on upstream waste reduction and sorting. In the process, the Panyu campaign progressed beyond a case of “regulation by escalation,” whereby beneficial regulations are belatedly enforced following populist pressure. Instead, it transformed into an open dialogue between a plurality of actors, including citizens, journalists, experts, and officials, about what regulation should constitute and who should determine acceptable levels of risk. By focusing on the processes through which regulatory issues emerged and changed during the Panyu campaign, this article highlights the regulatory dynamism of environmental mobilization in a context of regulatory uncertainty, and campaigns against “locally unwanted land uses” more broadly. 相似文献
727.
This study examines the roles of the executive budgetary proposal, the executive veto, the legislative override, and legislative uncertainty about the executive's preferences in determining the outcome of a budgetary process. A sequential model of the budgetary process with three institutional agents — a legislature, an appropriations committee, and an executive — is presented. To focus attention on the executive proposal, the veto, the override provision, and uncertainty, simplifying assumptions are made: (1) the appropriations committee has monopoly agenda power, and (2) there is a closed amendment control rule. In order to characterize sequential equilibria of various combinations of veto rules and override provisions, we examine a particular arrangement of agents' preferences and a two item budget. The results demonstrate that the final budget depends critically on the executive proposal, the executive veto rule, the override provision, and the uncertainty. We achieve three striking results. First, the executive proposal may be effective in reducing the frequency of the exercised veto. Second, for a given override provision, a movement from the item veto to the item reduction veto leaves the executive worse off in some cases. Third, with the same change in institutions, the government budget may increase. 相似文献
728.
Pablo Andrade Andrade Claudia N. Avellaneda Oliver Stuenkel Brandon Van Dyck Anthony Payne C. Angelo Guevara Paul W. Posner Thomas C. Bruneau 《拉美政治与社会》2017,59(1):154-174
Mauricio Font, The State and the Private Sector in Latin America: The Shift to Partnership. New York: Palgrave Macmillan, 2015. Figure, bibliography, appendixes, index, 318 pp.; hardcover $100, ebook $79.99. Tracy Beck Fenwick, Avoiding Governors: Federalism, Democracy, and Poverty Alleviation in Brazil and Argentina. Notre Dame: University of Notre Dame Press, 2016. Tables, figures, acronyms, bibliography, index, 277 pp.; hardcover $75, paperback $29. Michael Reid, Brazil: The Troubled Rise of a Global Power. New Haven: Yale University Press, 2016 [2014]. Illustrations, 352 pp.; paperback $22. Ben Ross Schneider, ed., New Order and Progress: Development and Democracy in Brazil. New York: Oxford University Press, 2016. Tables, figures, bibliography, index, 328 pp.; hardcover $99, paperback $31.95, ebook. Anthony P. Maingot, Race, Ideology, and the Decline of Caribbean Marxism. Gainesville: University Press of Florida, 2015. Index, 368 pp.; hardcover $79.95. Sebastián Ureta, Assembling Policy: Transantiago, Human Devices, and the Dream of a World‐Class Society. Cambridge: MIT Press, 2015. Photographs, figures, abbreviations, bibliography, index, 224 pp.; hardcover $39, ebook $27. Carlos de la Torre, De Velasco a Correa: insurreciones, populismos y elecciones en Ecuador, 1944–2013. Quito: Corporación Editora Nacional, 2015. Tables, bibliography, 243 pp.; paperback. Sebastian E. Bitar, US Military Bases, Quasi‐Bases, and Domestic Politics in Latin America. New York: Palgrave Macmillan, 2016. Map, figures, tables, notes, bibliography, index, 220 pp.; hardcover $110, ebook $79.99. 相似文献
729.
730.