全文获取类型
收费全文 | 18883篇 |
免费 | 210篇 |
专业分类
各国政治 | 712篇 |
工人农民 | 844篇 |
世界政治 | 1177篇 |
外交国际关系 | 660篇 |
法律 | 12364篇 |
中国共产党 | 2篇 |
中国政治 | 105篇 |
政治理论 | 3139篇 |
综合类 | 90篇 |
出版年
2023年 | 91篇 |
2021年 | 102篇 |
2020年 | 447篇 |
2019年 | 457篇 |
2018年 | 565篇 |
2017年 | 587篇 |
2016年 | 671篇 |
2015年 | 517篇 |
2014年 | 539篇 |
2013年 | 1833篇 |
2012年 | 491篇 |
2011年 | 518篇 |
2010年 | 546篇 |
2009年 | 569篇 |
2008年 | 521篇 |
2007年 | 512篇 |
2006年 | 529篇 |
2005年 | 443篇 |
2004年 | 438篇 |
2003年 | 371篇 |
2002年 | 415篇 |
2001年 | 689篇 |
2000年 | 611篇 |
1999年 | 492篇 |
1998年 | 247篇 |
1997年 | 181篇 |
1996年 | 201篇 |
1995年 | 200篇 |
1994年 | 179篇 |
1993年 | 191篇 |
1992年 | 310篇 |
1991年 | 315篇 |
1990年 | 303篇 |
1989年 | 282篇 |
1988年 | 311篇 |
1987年 | 267篇 |
1986年 | 327篇 |
1985年 | 320篇 |
1984年 | 249篇 |
1983年 | 235篇 |
1982年 | 182篇 |
1981年 | 162篇 |
1980年 | 147篇 |
1979年 | 220篇 |
1978年 | 116篇 |
1977年 | 93篇 |
1975年 | 99篇 |
1974年 | 129篇 |
1973年 | 84篇 |
1972年 | 83篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
891.
Social Justice Research - Acting on one’s moral principles is not always easy. Upholding one’s moral beliefs may run counter to one’s social environment or situational demands. It... 相似文献
892.
Cerver Romero Elvira Ferreira João J. M. Fernandes Cristina I. 《The Journal of Technology Transfer》2021,46(4):1173-1195
The Journal of Technology Transfer - The importance and the definition of an entrepreneurial university (EU), together with the factors that lead to its existence, have been widely discussed in the... 相似文献
893.
Laura M. Argys Daniel I. Rees Dominic J. Brewer 《Journal of policy analysis and management》1996,15(4):623-645
Schools across the country are ending the practice of grouping students based on ability, in part, because of research indicating that tracking hurts low-ability students without helping students of other ability levels. Using a nationally representative survey conducted by the National Center for Education Statistics, (NCES) we reexamine the impact of tracking on high school student achievement through the estimation of a standard education production function. This approach allows us to control for the possibility that track is correlated with factors such as class size and teacher education. In addition, we address the possibility that there are unobserved student or school characteristics that affect both achievement and track placement. Our results indicate that abolishing tracking in America's schools would have a large positive impact on achievement for students currently in the lower tracks, but that this increase in achievement would come at the expense of students in upper-track classes. 相似文献
894.
895.
International institutions and market expectations: Stock price responses to the WTO ruling on the 2002 U.S. steel tariffs 总被引:1,自引:0,他引:1
Nathan M. Jensen 《The Review of International Organizations》2007,2(3):261-280
Many scholars assert that international institutions have little power to enforce laws, punish offenders, or force compliance.
Others stress that international institutions are important actors, specifically in the regulation of international trade.
In this paper, I show that the recent trade dispute over U.S. steel protection provides us with a critical case to evaluate
the role of the World Trade Organization in settling trade disputes and specifically stabilizing expectations of market actors
over future steel policy. I argue that stock prices can serve as an important tool in answering these questions. In an empirical
analysis using daily steel stock prices, I find that during the 2002 WTO steel case, the WTO dispute mechanism helped market
actors stabilize expectations of future trade policy.
相似文献
Nathan M. JensenEmail: |
896.
Folk Johanna B. Brown Larry K. Marshall Brandon D. L. Ramos Lili M. C. Gopalakrishnan Lakshmi Koinis-Mitchell Daphne Tolou-Shams Marina 《Journal of youth and adolescence》2020,49(1):238-251
Journal of Youth and Adolescence - Court-involved youth exhibit high rates of psychiatric symptoms, substance use, and delinquency, yet little is known about the contributing roles of caregiver and... 相似文献
897.
Rogers Adam A. Padilla-Walker Laura M. McLean Ryan D. Hurst Jeffrey L. 《Journal of youth and adolescence》2020,49(1):136-149
Journal of Youth and Adolescence - Theory and research indicate considerable changes in parental control across adolescence (e.g., declining behavioral control), but the developmental course and... 相似文献
898.
While the fertility effects of improving teenagers’ access to contraception are theoretically ambiguous, most empirical work has shown that access decreases teen fertility. In this paper, we consider the fertility effects of access to condoms—a method of contraception not considered in prior work. We exploit variation across counties and across time in teenagers’ exposure to condom distribution programs in schools. We find that access to condoms in schools increases teen fertility by about 12 percent. The results suggest that the effects of condom access varied significantly across different programs; the positive fertility estimates are driven by communities where condoms are provided without mandated counseling. Programs that mandated counseling have zero or negative fertility effects, but estimates on these counties are less robust across specifications. 相似文献
899.
900.
Adam M. Auerbach Adrienne LeBas Alison E. Post Rebecca Weitz-Shapiro 《Studies in Comparative International Development (SCID)》2018,53(3):261-280
Contemporary urbanization in the Global South merits greater attention from scholars of comparative politics. Governance, associational life, and political behavior take distinctive forms in the social and institutional environments created by rapid urbanization, particularly within informal settlements and labor markets. In this special issue, we examine forms of collective action and claims-making in these spaces. We also consider how the state assesses, maps, and responds to the demands of informal sector actors. Tackling questions of citizen and state behavior in these informal urban contexts requires innovative research strategies due to data scarcity and social and institutional complexity. Contributors to this symposium offer novel strategies for addressing these challenges, including the use of informal archives, worksite-based sampling, ethnographic survey design, enforcement process-tracing, and crowd-sourced data. 相似文献