全文获取类型
收费全文 | 695篇 |
免费 | 24篇 |
专业分类
各国政治 | 38篇 |
工人农民 | 35篇 |
世界政治 | 85篇 |
外交国际关系 | 52篇 |
法律 | 333篇 |
中国政治 | 7篇 |
政治理论 | 160篇 |
综合类 | 9篇 |
出版年
2023年 | 3篇 |
2022年 | 4篇 |
2021年 | 3篇 |
2020年 | 9篇 |
2019年 | 15篇 |
2018年 | 15篇 |
2017年 | 23篇 |
2016年 | 26篇 |
2015年 | 12篇 |
2014年 | 19篇 |
2013年 | 104篇 |
2012年 | 14篇 |
2011年 | 19篇 |
2010年 | 23篇 |
2009年 | 16篇 |
2008年 | 26篇 |
2007年 | 28篇 |
2006年 | 24篇 |
2005年 | 23篇 |
2004年 | 27篇 |
2003年 | 20篇 |
2002年 | 14篇 |
2001年 | 13篇 |
2000年 | 17篇 |
1999年 | 24篇 |
1998年 | 19篇 |
1997年 | 11篇 |
1996年 | 10篇 |
1995年 | 7篇 |
1994年 | 15篇 |
1993年 | 13篇 |
1992年 | 17篇 |
1991年 | 11篇 |
1990年 | 10篇 |
1989年 | 3篇 |
1988年 | 9篇 |
1987年 | 7篇 |
1986年 | 10篇 |
1985年 | 7篇 |
1984年 | 5篇 |
1983年 | 6篇 |
1982年 | 3篇 |
1981年 | 5篇 |
1978年 | 4篇 |
1977年 | 4篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1974年 | 3篇 |
1973年 | 4篇 |
1965年 | 2篇 |
排序方式: 共有719条查询结果,搜索用时 15 毫秒
151.
This research partially tests Akers’ social structure-social learning theory (SSSL). The data was collected online through a self-report questionnaire and nearly half (48.8%) of the sample of 812 college students reported visiting a porn site. To better understand this self-report behavior, bivariate correlations and three binary logistic regression analyses were conducted. In Model A, participants who were male, Hispanic, had more years in college, and more inclined toward homosexuality had an increased likelihood of visiting a porn site. In Model B, again, gender, ethnicity, year in school, and the sexuality scale were significant predictors. However, race appeared as significant for the first time along with number of sex partners, and frequency of masturbation, indicating that participants who were Black, had a greater number of sexual partners, and masturbated more frequently had an increased likelihood of visiting porn site. As with the first and second models, gender, race, sexuality scale, and frequency of masturbation were significant predictors in Model C. Additionally, differential peer association, differential reinforcement, and definitions favorable were significant, indicating that participants who had greater association with peers who viewed porn, who had observed someone watching porn and decided to mimic their behaviors, and who had defined visiting porn sites favorably had an increased likelihood of visiting a porn site. Overall, Akers’ SLT variables fully mediated ethnicity, year in school, and number of sex partners, but it only partially mediated gender, race, and sexuality scale. 相似文献
152.
‘Over the top’ communications services such as Skype and FaceTime are changing the way we communicate, carrying voice and video traffic over the Internet. Unlike traditional mobile and fixed line alternatives, these services fall outside the reach of the common regulatory framework. Whilst an absence of regulation is not appropriate, neither is subjecting these services to the full gamut of regulation the path forward: an analysis of the core elements of the regulatory frameworks reveals that, in respect of data retention and privacy, harmonisation of regulation is appropriate. The remaining challenge is determining whether effective regulation could indeed be imposed on services offered from outside the EU. 相似文献
153.
154.
155.
Neil Charlesworth 《The Journal of peasant studies》2013,40(3):259-280
Peasant agitations during the last decades of British rule in India are now receiving increasing attention. Despite a diversity of arguments concerning their origins within the peasantry, one popular model is that developed by Wolf and Alavi of the potential radicalism of a landowning subsistence middle peasantry. The thesis is here examined both in terms of its general analytical value for India and by studying one particular movement, the campaign in Bardoli, Gujarat in 1928. From this, some conclusions are suggested about the nature of successful peasant political action in India and other parts of Asia. 相似文献
156.
157.
A database of environmental remediation costs is described as the response cost database (RCD). The database, which contains both capital and operating costs, includes 220 entries for complete activities ranging from studies to remedy components, such as caps, dredging, and pump and treat systems. Information and data sources for the RCD included actual costs from the literature, construction handbooks, and U.S. Environmental Protection Agency-approved software such as RACER. Costs were compared to benchmarks, such as from actual projects, when possible. Guidance on assumptions and scaling is provided with unit costs. The database was developed by environmental engineers experienced in the activities included and thus represents insightful estimation. The RCD may be useful for valuation of environmental portfolios or projects for planning, financial reporting, project management, financing, or mergers/acquisitions. 相似文献
158.
159.
160.