全文获取类型
收费全文 | 15529篇 |
免费 | 457篇 |
专业分类
各国政治 | 973篇 |
工人农民 | 559篇 |
世界政治 | 1171篇 |
外交国际关系 | 667篇 |
法律 | 8652篇 |
中国共产党 | 3篇 |
中国政治 | 94篇 |
政治理论 | 3716篇 |
综合类 | 151篇 |
出版年
2023年 | 73篇 |
2020年 | 179篇 |
2019年 | 239篇 |
2018年 | 332篇 |
2017年 | 363篇 |
2016年 | 377篇 |
2015年 | 313篇 |
2014年 | 341篇 |
2013年 | 2107篇 |
2012年 | 438篇 |
2011年 | 440篇 |
2010年 | 399篇 |
2009年 | 416篇 |
2008年 | 490篇 |
2007年 | 532篇 |
2006年 | 494篇 |
2005年 | 466篇 |
2004年 | 458篇 |
2003年 | 390篇 |
2002年 | 411篇 |
2001年 | 447篇 |
2000年 | 388篇 |
1999年 | 284篇 |
1998年 | 245篇 |
1997年 | 222篇 |
1996年 | 219篇 |
1995年 | 183篇 |
1994年 | 173篇 |
1993年 | 195篇 |
1992年 | 264篇 |
1991年 | 289篇 |
1990年 | 255篇 |
1989年 | 251篇 |
1988年 | 241篇 |
1987年 | 268篇 |
1986年 | 269篇 |
1985年 | 218篇 |
1984年 | 224篇 |
1983年 | 234篇 |
1982年 | 169篇 |
1981年 | 146篇 |
1980年 | 129篇 |
1979年 | 151篇 |
1978年 | 124篇 |
1977年 | 124篇 |
1976年 | 86篇 |
1975年 | 85篇 |
1974年 | 91篇 |
1973年 | 103篇 |
1972年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
Wendell E. Primus 《Journal of policy analysis and management》1989,8(1):23-34
By gathering and disseminating information, members of the Committee on Ways and Means, and committee staff under their supervision, have played an important role in informing the debate on poverty issues during the 1980s. In the face of President Reagan's 1981 budget program, which reduced spending in the major antipoverty programs, committee members targeted substantial resources to an ongoing, albeit ad hoc, education process. The process has not only provided evidence of the adverse impact of the 1981 reductions on the poor, but has also made new contributions to the understanding of poverty. Although many other factors have contributed to outcomes in poverty policy during the 1980s, it is clear that this education process played an important role in the successes achieved thus far; partial reversal of the 1981 reductions has been achieved, tax changes have been implemented which help low-income families, and a welfare reform bill has been enacted. 相似文献
992.
993.
994.
Dr. Jake V. T. Knoppers 《The Journal of Technology Transfer》1984,9(1):1-14
Transborder data flow and technology transfer issues have a substantial overlap. Transborder data flows represent flows of information with economic and/or cultural value. Electronic access to “know-how”, information, data, etc. is becoming more and more important to technology transfer and sharing. National transborder data flow policies either affect or can themselves be technology transfer policies. 相似文献
995.
A limited number of recent empirical studies suggest that inmates suffer from high rates of serious mental illness. Different explanations are offered depending on the type of institution: jail or prison. The literature is based largely on urban samples and does not offer comparisons of rates across types of institution within a single study. The present study examined a random sample of 213 jail and prison inmates in a rural state using the Diagnostic Interview Schedule (III-R). Among jail inmates there was little evidence of high rates of serious mental illness, suggesting the criminalization of mental illness may not be as evident in rural settings as urban areas. Among prison inmates, however, high rates of mental disorders were found, supporting previous findings in urban and rural jurisdictions. Implications of the findings are discussed in the context of a consolidated correctional system. 相似文献
996.
997.
The applicability of isoelectric focusing in immobilized pH gradients for the Gc-subtyping in the forensic examination of bloodstains was tested. It is shown that due to the excellent separation of the Gc 1S and 1F bands subtyping of bloodstains can be done with high reliability. 相似文献
998.
999.
K S Blisard C Martin G W Brown J E Smialek L E Davis P J McFeeley 《Journal of forensic sciences》1988,33(6):1457-1462
The causes of death of 53 severely to profoundly developmentally disabled patients who died in an intermediate care facility were reviewed. Respiratory disease, predominantly pneumonia and aspiration, accounted for 72% of deaths. Seven patients died of nonrespiratory causes, and in 8 patients, no cause of death could be determined, even after a complete autopsy or investigation. The median age at death was 20 years. The weights of these patients' organs at autopsy were lower than those for normal individuals of the same age. The lifespan of these severely impaired individuals continues to be significantly shortened, even with improved methods of care. 相似文献
1000.
Timothy S. Schoenecker Dr. Donald D. Myers Dr. Peter Schmidt 《The Journal of Technology Transfer》1989,14(2):28-32
Improvement in the ability of universities in the United States to transfer technology to the private sector is seen as a factor in strengthening American competitiveness. To better understand the university's role in this process, a survey of formal university programs in technology transfer was performed through personal interviews at four midwestern land-grant universities. There are six basic types of programs in place: technical assistance, affiliate, licensing, business development, incubators and research parks, and information networks. For purposes of classifying these programs, we used the model developed by Janis et al. (1) It was found that, of the six modes of technology transfer, two could be considered active, three semi-active and one passive. 相似文献