全文获取类型
收费全文 | 12332篇 |
免费 | 420篇 |
专业分类
各国政治 | 791篇 |
工人农民 | 485篇 |
世界政治 | 999篇 |
外交国际关系 | 680篇 |
法律 | 6677篇 |
中国政治 | 87篇 |
政治理论 | 2926篇 |
综合类 | 107篇 |
出版年
2021年 | 69篇 |
2020年 | 154篇 |
2019年 | 197篇 |
2018年 | 309篇 |
2017年 | 332篇 |
2016年 | 392篇 |
2015年 | 240篇 |
2014年 | 289篇 |
2013年 | 1612篇 |
2012年 | 320篇 |
2011年 | 322篇 |
2010年 | 289篇 |
2009年 | 296篇 |
2008年 | 370篇 |
2007年 | 418篇 |
2006年 | 393篇 |
2005年 | 334篇 |
2004年 | 332篇 |
2003年 | 318篇 |
2002年 | 288篇 |
2001年 | 374篇 |
2000年 | 327篇 |
1999年 | 330篇 |
1998年 | 176篇 |
1997年 | 162篇 |
1996年 | 141篇 |
1995年 | 127篇 |
1994年 | 141篇 |
1993年 | 141篇 |
1992年 | 187篇 |
1991年 | 218篇 |
1990年 | 213篇 |
1989年 | 192篇 |
1988年 | 207篇 |
1987年 | 203篇 |
1986年 | 206篇 |
1985年 | 184篇 |
1984年 | 168篇 |
1983年 | 147篇 |
1982年 | 108篇 |
1981年 | 120篇 |
1980年 | 86篇 |
1979年 | 145篇 |
1978年 | 104篇 |
1977年 | 88篇 |
1976年 | 69篇 |
1975年 | 94篇 |
1974年 | 109篇 |
1973年 | 91篇 |
1971年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
ABSTRACTLike many Republican presidential candidates before him, Donald J. Trump campaigned on a pro-business, anti-regulation platform, and since his election in November 2016, he has directed his administration to move forward with deregulation in many arenas, including consumer financial protections, environmental controls, and workplace safety among others. Past efforts to roll back regulations governing certain industries, such as the savings and loan and the mortgage industries, have had harmful consequences for the general public or for specific interest groups. In this study, we review what the Trump administration has accomplished with regard to deregulation to date. Then, based on past deregulatory fiascos, we theorize the harmful collateral consequences that may result from this most recent swing of the regulatory-deregulatory pendulum. 相似文献
2.
Michael Leigh 《European Security》2019,28(3):382-391
ABSTRACTReflecting on the results presented in articles in this special issue, European leaders should take greater account of external perceptions in crafting the European Union's strategic narrative and guiding its actions. Failure to do so has impaired external policies like the Euro-Mediterranean Partnership, the European Neighbourhood Policy and Eastern Partnership. Leaders emerging from the Arab uprisings perceived the EU as complicit with their countries’ former anciens régimes and Russian leaders see EU support for democracy and the market economy in former Soviet states as duplicitous and instrusive. Awareness of such perceptions should be filtered into EU decision-making, without validating views that European officials and diplomats consider misleading. 相似文献
3.
ABSTRACTCopyright is inherently intertwined with the development of technology and none more so than the advent of the Internet and sharing technologies. More recently, social media platforms have become the latest challenge for copyright law and policy. This article builds on the literature that recognises the underlying conflict between copyright and social networking sites (SNSs); namely that the basic implication of copyright is the restriction of copying, whereas the ethos of social networking is the promotion of sharing. In particular, this article focuses on the disparity between the restricted acts of copying and communication to the public under copyright law and the encouragement of sharing on SNS Instagram. In doing so, it contextualises the debate surrounding copyright and social media and provides an understanding of the legal implications of using Instagram. As such this paper analyses (1) the infringement of copyright protected work on Instagram, and (2) the user-agreement and licensing of copyright material on Instagram. This study concludes that the disparity between the principles of copyright and social media lead to confusion and vulnerability of users. Therefore, it is suggested that Instagram should better inform its users of the implications of sharing third-party content as well as the terms of its user agreement. This could be done by implementing a copyright strategy, which includes a notice and takedown system as well as investing in producing educational content for users. Perhaps SNSs, such as Instagram might be more motivated to take steps to recognise intellectual property rights if they were considered Internet Services Provides such as YouTube. 相似文献
4.
5.
6.
7.
While the concepts of race and ethnicity have been abused historically, they are potentially invaluable in epidemiology and public health. Epidemiology relies upon variables that help differentiate populations by health status, thereby refining public health and health care policy, and offering insights for medical science. Race and ethnicity are powerful tools for doing this. The prerequisite for their responsible use is a society committed to reducing inequalities and inequities in health status. When this condition is met, it is irresponsible not to utilize these concepts. 相似文献
8.
Ernst-Rainer Hönes 《Natur und Recht》2006,28(5):279-285
Die von Deutschland nach Art. 59 Abs. 2 GG ratifizierten europ?ischen und internationalen übereinkommen zum Denkmal- und Kulturgüterschutz
müssen in nationales Recht transformiert werden. W?hrend die L?nder im Rahmen ihrer Kompetenz (Art. 30, 70, 83 GG) Denkmalschutzgesetze
erlassen haben, hat der Bund in einschl?gigen Gesetzen wie dem Bundeswaldgesetz den Denkmalschutz bisher nicht berücksichtigt.
Dabei ist bei einem Waldanteil von 30% der Wald mit seinen historischen Kulturlandschaften und seinem Waldboden als Archiv
der Natur- und Kulturgeschichte von besonderer Bedeutung. Da Deutschland 60 Jahre nach Kriegsende endlich auch ausdrücklich
ein Kulturstaat werden soll, ist es an der Zeit, dass die Belange des Denkmalschutzes auch im Bundeswaldgesetz (z.B. §§ 1,
2, 9 oder 11 BWaldG) berücksichtigt werden. Einige Verpflichtungen zum Denkmal- und Kulturgüterschutz sind heute ohnehin bereits
V?lkergewohnheitsrecht (Art. 25 GG). 相似文献
9.
10.
Stab wounds were made in parenchymatous organs (e.g. liver, spleen, kidneys, lungs) using a variety of instruments. The shape of the resulting canal was investigated by X-ray analysis after introduction of an X-ray contrast medium. The best contrast was obtained using a contrast medium containing barium. The shape of the canal gave a direct representation of the outline of the instrument used. The width of the canal was however, always several millimeters smaller than the corresponding blade of the instrument. The position of the blade back in single-edged blades could be demonstrated with stronger contrast. 相似文献