全文获取类型
收费全文 | 11700篇 |
免费 | 652篇 |
专业分类
各国政治 | 531篇 |
工人农民 | 405篇 |
世界政治 | 947篇 |
外交国际关系 | 378篇 |
法律 | 7614篇 |
中国共产党 | 1篇 |
中国政治 | 61篇 |
政治理论 | 2351篇 |
综合类 | 64篇 |
出版年
2021年 | 66篇 |
2020年 | 207篇 |
2019年 | 253篇 |
2018年 | 272篇 |
2017年 | 334篇 |
2016年 | 343篇 |
2015年 | 272篇 |
2014年 | 297篇 |
2013年 | 1198篇 |
2012年 | 278篇 |
2011年 | 349篇 |
2010年 | 316篇 |
2009年 | 332篇 |
2008年 | 332篇 |
2007年 | 310篇 |
2006年 | 310篇 |
2005年 | 273篇 |
2004年 | 280篇 |
2003年 | 262篇 |
2002年 | 266篇 |
2001年 | 483篇 |
2000年 | 435篇 |
1999年 | 306篇 |
1998年 | 198篇 |
1997年 | 164篇 |
1996年 | 143篇 |
1995年 | 139篇 |
1994年 | 163篇 |
1993年 | 152篇 |
1992年 | 215篇 |
1991年 | 238篇 |
1990年 | 215篇 |
1989年 | 228篇 |
1988年 | 225篇 |
1987年 | 211篇 |
1986年 | 255篇 |
1985年 | 231篇 |
1984年 | 174篇 |
1983年 | 179篇 |
1982年 | 127篇 |
1981年 | 134篇 |
1980年 | 98篇 |
1979年 | 150篇 |
1978年 | 90篇 |
1977年 | 82篇 |
1976年 | 79篇 |
1974年 | 74篇 |
1973年 | 75篇 |
1972年 | 72篇 |
1970年 | 50篇 |
排序方式: 共有10000条查询结果,搜索用时 578 毫秒
41.
Carol S. Bruch 《Family Court Review》1993,31(1):101-107
This article examines voluntary mediation and provides suggested criteria for attorneys in deciding whether or not to use mediation. The author discusses what mediation has to offer, what it takes to make it work, and important cautions for attorneys in deciding about the use of this process. 相似文献
42.
Identification of the driver in two-rider motorcycle accidents. Inguinal contusion-laceration as an indication of the driver 总被引:1,自引:0,他引:1
H Shiono A Akane K Matsubara K Tanabe S Takahashi 《The American journal of forensic medicine and pathology》1990,11(3):190-192
In motorcycle accidents involving two riders, medicolegal identification of the driver is necessary when one or both riders die. It is particularly important in the latter case, because the survivor almost always insists that he or she was not driving. One characteristic injury that distinguishes the driver from the passenger is inguinal contusion-laceration (accompanied internally by pelvic fracture). This injury, caused by collision of the pelvis with the fuel tank, identifies the driver. 相似文献
43.
44.
Jill S. Cannon Alison Jacknowitz Gary Painter 《Journal of policy analysis and management》2006,25(2):299-321
Kindergarten policy varies widely both across and within states. Over the past decade, a number of states have instituted a full‐day kindergarten requirement and others are considering it as a way to increase educational achievement. Many parents also support full‐day kindergarten as a source of child care. This paper uses the Early Child Longitudinal Study–Kindergarten Class of 1998–1999 to evaluate the efficacy of this policy. In ordinary least squares, probit, county fixed effects, and instrumental variables models, we find that there are initial benefits for students and the mothers of students who attend full‐day kindergarten, but that these differences largely evaporate by third grade. Contrary to claims by some advocates, attending full‐day kindergarten is found to have no additional benefit for students in families with income below the poverty threshold. © 2006 by the Association for Public Policy Analysis and Management 相似文献
45.
A book may be good for nothing; or there may be onlyone thing in it worth knowing; are we to read it all through?(Samuel Johnson) This section is dedicated to the review ofideas, articles, books, films and other media. It will includereplies (and rejoinders) to articles, the evaluation of newideas or proposals, and reviews of books and articles both directlyand indirectly related to intellectual property law.International Patent Law is Obsolete By Anna Mancini, 2006,New York: Buenos Books Price: US$35, Paperback, ISBN: 1-932848-17-7E-book Price: US$7, ISBN: 1-932848-16-9 Copyright is ObsoleteBy Anna Mancini, 2006, New York: Buenos Books Price: US$35,Paperback, ISBN: 1-932848-17-7 E-book Price: US$5, ISBN: 1-932848-19-3 In International Patent Law is Obsolete Dr Mancini's openingpremise is 相似文献
46.
47.
48.
Duration models were used to investigate reconviction risks for a sample of 34,126 offenders released from prison in England and Wales during 1998. Different versions of the Cox proportional hazards model were applied to a comprehensive data set covering several offense types. Factors such as age (modelled using bands rather than a linear or quadratic format), gender, convictions-history, and offense type were found to be strongly associated with the risk of reconviction. Interactions between factors were also included and it was shown that the discrepancy between the risk of reconviction for males and females became weaker as the number of previous convictions increased. The study helped identify the subgroups of offenders for whom reconviction risks are greatest and the times when they seem to be most vulnerable to reconviction. Implications are explored for the design of prisoner resettlement programs and the prioritization of offenders for more intensive forms of intervention. 相似文献
49.
50.
In the statistical interpretation of forensic glass evidence it is standard practice to make the assumption of homogeneity of the refractive index (RI) of the source glass, or of localized homogeneity. However, the work of Locke and Hayes showed that, for toughened windscreen glass, this assumption might not be true. This work is well cited, but there appears to have been little follow-on published research. Furthermore, the toughening process is something known to affect the refractive index, and is a process that float glass does not undergo. Float glass is a major component of casework in New Zealand and for that reason it would be interesting to know whether the findings of Locke and Hayes apply when dealing with float glass. In this paper we describe an experiment similar to that of Locke and Hayes, systematically examining the variation of RI in a pane of float window glass. It was found that, although there were no systematic differences in refractive index, there were observable differences across the pane. 相似文献