全文获取类型
收费全文 | 602篇 |
免费 | 25篇 |
专业分类
各国政治 | 32篇 |
工人农民 | 22篇 |
世界政治 | 66篇 |
外交国际关系 | 46篇 |
法律 | 272篇 |
中国政治 | 4篇 |
政治理论 | 183篇 |
综合类 | 2篇 |
出版年
2023年 | 5篇 |
2022年 | 8篇 |
2021年 | 5篇 |
2020年 | 14篇 |
2019年 | 12篇 |
2018年 | 25篇 |
2017年 | 38篇 |
2016年 | 24篇 |
2015年 | 12篇 |
2014年 | 21篇 |
2013年 | 74篇 |
2012年 | 14篇 |
2011年 | 12篇 |
2010年 | 19篇 |
2009年 | 14篇 |
2008年 | 19篇 |
2007年 | 22篇 |
2006年 | 11篇 |
2005年 | 12篇 |
2004年 | 13篇 |
2003年 | 14篇 |
2002年 | 16篇 |
2001年 | 11篇 |
2000年 | 8篇 |
1999年 | 12篇 |
1998年 | 8篇 |
1997年 | 4篇 |
1996年 | 8篇 |
1994年 | 8篇 |
1993年 | 9篇 |
1992年 | 5篇 |
1991年 | 15篇 |
1990年 | 10篇 |
1989年 | 7篇 |
1988年 | 6篇 |
1987年 | 12篇 |
1986年 | 9篇 |
1985年 | 9篇 |
1984年 | 4篇 |
1983年 | 7篇 |
1982年 | 5篇 |
1981年 | 7篇 |
1980年 | 4篇 |
1979年 | 6篇 |
1978年 | 5篇 |
1976年 | 5篇 |
1975年 | 3篇 |
1973年 | 9篇 |
1972年 | 5篇 |
1971年 | 4篇 |
排序方式: 共有627条查询结果,搜索用时 15 毫秒
151.
152.
Samuel Stoljar 《The Journal of legal history》2013,34(2):250-269
153.
This article expands understanding of gender and advancement in academic science by going into a new dimension of inquiry: Focusing on women associate professors in computing, it assesses the relationship between perceived chances for promotion to full professor and indicators of entrepreneurship, as part of key sets of individual and departmental independent variables that are also addressed. Data from a national survey of women in academic computing indicate that time spent in entrepreneurial activity does not predict excellent/good (compared to fair/poor) chances for promotion perceived by these women faculty, nor does the quantity/quality of entrepreneurial activity that they report for their home units. Departmental reward structures reported as favoring entrepreneurial activity negatively predict perceived chances for promotion. Other key individual and departmental characteristics also predict chances for promotion: faculty members’ age, collaboration, family characteristics, departmental climate, and US (compared to Canadian) location. Findings from interviews with a small subset of respondents to the survey illuminate the survey findings on the role of entrepreneurial factors in perceived chances for advancement. 相似文献
154.
155.
The method of residue extraction through electrostatic lifting provides a distinctive mode of performing ultra-trace analysis. These lifts provide a medium for analyte extraction via nanomanipulation-coupled to nanospray ionization-mass spectrometry (NSI-MS). This method of extraction can be coupled to Raman spectroscopy for supplemental verification of analytes using surface enhanced Raman scattering (SERS). The gold surface used for SERS provides an enhanced effect on peak signal intensity allowing ultra-trace amounts to be detected more effectively. The aim of this research is to utilize gold-coated films with electrostatic lifting in order to collect latent materials and analyze chemicals of interest contained in them via SERS. 相似文献
156.
This paper discusses the organization of the first international proficiency test (PT) programme on ketamine (K) and norketamine (NK) in hair samples. The primary objective of the programme was to evaluate the analytical capability of participating laboratories on hair analysis for K and NK via comparison of results. Authentic samples, instead of spiked samples were used in the programme to mimic the analysis of incorporated illicit drugs in real-life situations. Eight of the ten participating medical or forensic laboratories from Australia, France, Hong Kong, Italy, Singapore and the USA returned results to the organizer. Quantification methods from these laboratories were confined to GC-MS and LC-MS/MS. Performance assessment based on z-score indicated that only three laboratories achieved satisfactory results for both the analysis of K and NK. It was concluded that the overall performance of the participating laboratories was fair and there is still room for further improvement. Additional similarly designed PT programmes are recommended to be organized in order to encourage reliable measurements of illicit drugs in hair samples. Taking into account the substantial effect on the consensus values within limited number of data points, a recommendation on the provision of reference values assigned by accurate methods will be of benefit to small size PT programmes in the forensic field. 相似文献
157.
Umbilical cord blood is a source of haematopoietic progenitor cells, which are used to treat a range of malignant, genetic, metabolic and immune disorders. Until recently, cord blood was either collected through donations to publicly funded cord blood banks for use in allogeneic transplantation, or stored in commercial cord blood banks for use in autologous transplantation. The line between public and private cord blood banking is being blurred by the emergence of "hybrid" models that combine aspects of both the public and private systems. The authors describe these hybrid models and argue that their emergence is explained by both market forces and public sector policy They propose that the future of the sector will depend heavily on several key developments that will differentially affect public, private and hybrid banking models. 相似文献
158.
Komesaroff PA Kerridge IH Stewart C Samuel G Lipworth W Jordens CF 《Journal of law and medicine》2012,19(3):517-524
While direction of donated tissue to family members has long been accepted, direction to members of specific racial groups has been opposed, on the basis that it is discriminatory and contrary to the ethos the institution of organ donation seeks to promote. It has, however, recently been proposed that racially conditional donation may provide a useful--and ethically acceptable--way to address the social inequalities and injustices experienced by certain cultural groups. This article examines the ethical, legal and cultural arguments for and against racially conditional donation, concluding that the practice is more likely to undermine the values of equity and justice than to promote them and that it may also lead to other unfavourable personal and social outcomes. 相似文献
159.
160.
Carleen H. Stoskopf Samuel L. Baker James R. Ciesla Donna L. Richter Elizabeth D. Schulman 《国际公共行政管理杂志》2013,36(8):1335-1361
Medicaid waivers play an important role in the health policy process. Various health care policy initiatives have encouraged states to experiment ith their Medicaid programs by expanding coverage to populations not traditionally covered by Medicaid, or by delivering Medicaid services in non traditional ways. Lessons learned by individual states' Medicaid waivers could be an important part of the health care reform debate. This paper presents an evaluation of a Medicaid waiver operating in South I Carolina. The South Carolina Community Long-term Care Waiver for the Elderly and Disabled is evaluated for cost effectiveness, quality of care, and client satisfaction. This evaluation shows that the waiver is highly effective in offering individuals who are medically and financially eligible for Medicaid supported nursing home care a viable, cost effective, high quality alternate to institutionalization. 相似文献