全文获取类型
收费全文 | 1308篇 |
免费 | 77篇 |
专业分类
各国政治 | 67篇 |
工人农民 | 63篇 |
世界政治 | 124篇 |
外交国际关系 | 147篇 |
法律 | 592篇 |
中国政治 | 5篇 |
政治理论 | 376篇 |
综合类 | 11篇 |
出版年
2023年 | 10篇 |
2021年 | 10篇 |
2020年 | 37篇 |
2019年 | 41篇 |
2018年 | 48篇 |
2017年 | 66篇 |
2016年 | 68篇 |
2015年 | 45篇 |
2014年 | 43篇 |
2013年 | 186篇 |
2012年 | 41篇 |
2011年 | 66篇 |
2010年 | 44篇 |
2009年 | 46篇 |
2008年 | 41篇 |
2007年 | 34篇 |
2006年 | 40篇 |
2005年 | 42篇 |
2004年 | 49篇 |
2003年 | 47篇 |
2002年 | 35篇 |
2001年 | 20篇 |
2000年 | 32篇 |
1999年 | 21篇 |
1998年 | 21篇 |
1997年 | 22篇 |
1996年 | 15篇 |
1995年 | 12篇 |
1994年 | 14篇 |
1993年 | 20篇 |
1992年 | 12篇 |
1991年 | 18篇 |
1990年 | 15篇 |
1989年 | 11篇 |
1988年 | 8篇 |
1987年 | 12篇 |
1986年 | 4篇 |
1985年 | 13篇 |
1984年 | 6篇 |
1983年 | 12篇 |
1982年 | 9篇 |
1981年 | 3篇 |
1980年 | 6篇 |
1979年 | 3篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1975年 | 6篇 |
1974年 | 4篇 |
1973年 | 3篇 |
1972年 | 3篇 |
排序方式: 共有1385条查询结果,搜索用时 140 毫秒
231.
232.
233.
Howard MO Hall MT Edwards JD Vaughn MG Perron BE Winecker RE 《The American journal of forensic medicine and pathology》2011,32(1):61-70
Suicide by asphyxiation using helium is the most widely-promoted method of "self-deliverance" by right-to-die advocates. However, little is known about persons committing such suicides or the circumstances and manner in which they are completed. Prior reports of suicides by asphyxiation involving helium were reviewed and deaths determined by the North Carolina Office of the Chief Medical Examiner to be helium-associated asphyxial suicides occurring between January 1, 2000 and December 31, 2008 were included in a new case series examined in this article. The 10 asphyxial suicides involving helium identified in North Carolina tended to occur almost exclusively in non-Hispanic, white men who were relatively young (M age = 41.1 T 11.6). In 6 of 10 cases, decedents suffered from significant psychiatric dysfunction; in 3 of these 6 cases, psychiatric disorders were present comorbidly with substance abuse. In none of these cases were decedents suffering from terminal illness. Most persons committing suicide with helium were free of terminal illness but suffered from psychiatric and/or substance use disorders. 相似文献
234.
Gabriela Kennedy 《Computer Law & Security Report》2011,27(4):436-446
This column provides a country by country analysis of the latest legal developments, cases and issues relevant to the IT, media and telecommunications’ industries in key jurisdictions across the Asia Pacific region. The articles appearing in this column are intended to serve as ‘alerts’ and are not submitted as detailed analyses of cases or legal developments. 相似文献
235.
Gabriela Kennedy 《Computer Law & Security Report》2011,27(3):318-326
This column provides a country by country analysis of the latest legal developments, cases and issues relevant to the IT, media and telecommunications’ industries in key jurisdictions across the Asia Pacific region. The articles appearing in this column are intended to serve as ‘alerts’ and are not submitted as detailed analyses of cases or legal developments. 相似文献
236.
Gabriela Kennedy 《Computer Law & Security Report》2011,27(1):98-105
This column provides a country by country analysis of the latest legal developments, cases and issues relevant to the IT, media and telecommunications’ industries in key jurisdictions across the Asia-Pacific region. The articles appearing in this column are intended to serve as ‘alerts’ and are not submitted as detailed analyses of cases or legal developments. 相似文献
237.
Gabriela Kennedy 《Computer Law & Security Report》2011,27(2):201-210
This column provides a country by country analysis of the latest legal developments, cases and issues relevant to the IT, media and telecommunications’ industries in key jurisdictions across the Asia-Pacific region. The articles appearing in this column are intended to serve as ‘alerts’ and are not submitted as detailed analyses of cases or legal developments. 相似文献
238.
James?E.?Sutton Paul?E.?BellairEmail author Brian?R.?Kowalski Ryan?Light Donald?T.?Hutcherson 《Journal of Quantitative Criminology》2011,27(2):151-171
Data collection using the life event calendar method is growing, but reliability is not well established. We examine test–retest reliability of monthly self-reports of criminal behavior collected using a life event calendar from a random sample of minimum and medium security prisoners. Tabular analysis indicates substantial agreement between self-reports of drug dealing, property, and violent crime during a baseline interview (test) and a follow-up (retest) approximately 3 weeks later. Hierarchical analysis reveals that criminal activity reported during the initial test is strongly associated with responses given in the retest, and that the relationship varies only by the lag in days between the initial interview and the retest. Analysis of validity reveals that self-reported incarceration history is strongly predictive of official incarceration history although we were unable to address whether subjects could correctly identify the months they were incarcerated. African Americans and older subjects provide more valid responses but in practical terms the differences in validity are not large. 相似文献
239.
Previous work suggests that δ(18)O values of human hair can be used to constrain the region-of-origin of unknown individuals, but robust assessments of uncertainties in this method are lacking. Here we assess one source of uncertainty - temporal variation in the δ(18)O value of drinking water - using a monthly tap water survey of δ(18)O to develop geospatial models (i.e., maps) of the intra-annual variation (seasonality) in tap water δ(18)O for the contiguous USA. Temporal variation in tap water δ(18)O was correlated with water-supply type, and was related to geographic patterns of precipitation δ(18)O seasonality and water residence time. The maps were applied in a Bayesian framework to identify the geographic origin of an unidentified woman found in Utah, based on measured δ(18)O of scalp hair. The results are robust in specifying parts of the western USA as the most likely region-of-origin. Incorporation of tap water δ(18)O seasonality in the analysis reduces the precision of geographic assignments, but other sources of uncertainty (e.g., spatial interpolation uncertainty) have an equal or larger effect. 相似文献
240.
Claims-made insurance policies often contain provisions regarding the treatment of the same, related, or interrelated acts or claims. Such language may affect the number of policy limits and retentions available as well as the timing of when multiple claims are deemed made. This article examines sample policy language as to the same, related, or interrelated acts or claims provisions as well as the disparate case law interpreting such provisions. The result is several principles to guide policyholders in the application of such language and to counter insurers’ efforts to unreasonably use such language to limit or deny coverage. 相似文献