全文获取类型
收费全文 | 1049篇 |
免费 | 49篇 |
专业分类
各国政治 | 67篇 |
工人农民 | 78篇 |
世界政治 | 132篇 |
外交国际关系 | 76篇 |
法律 | 440篇 |
中国共产党 | 1篇 |
中国政治 | 8篇 |
政治理论 | 293篇 |
综合类 | 3篇 |
出版年
2023年 | 16篇 |
2022年 | 4篇 |
2021年 | 15篇 |
2020年 | 36篇 |
2019年 | 40篇 |
2018年 | 53篇 |
2017年 | 58篇 |
2016年 | 51篇 |
2015年 | 32篇 |
2014年 | 46篇 |
2013年 | 234篇 |
2012年 | 36篇 |
2011年 | 42篇 |
2010年 | 31篇 |
2009年 | 24篇 |
2008年 | 30篇 |
2007年 | 39篇 |
2006年 | 20篇 |
2005年 | 27篇 |
2004年 | 22篇 |
2003年 | 20篇 |
2002年 | 29篇 |
2001年 | 21篇 |
2000年 | 8篇 |
1999年 | 10篇 |
1998年 | 13篇 |
1997年 | 9篇 |
1996年 | 6篇 |
1995年 | 7篇 |
1994年 | 11篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1990年 | 6篇 |
1989年 | 6篇 |
1988年 | 3篇 |
1987年 | 9篇 |
1985年 | 3篇 |
1984年 | 5篇 |
1983年 | 3篇 |
1982年 | 8篇 |
1981年 | 11篇 |
1980年 | 9篇 |
1979年 | 6篇 |
1978年 | 8篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1974年 | 2篇 |
1968年 | 2篇 |
1967年 | 3篇 |
1962年 | 2篇 |
排序方式: 共有1098条查询结果,搜索用时 15 毫秒
121.
The Tri-State Crematory Incident in Nobel, GA (February 2001) revealed limitations in traditional human cremated remains (cremains) analytical methodology. The goal of this study was to develop a method for effectively classifying questionable sets of cremains as legitimate or contaminated. Eighty-eight samples of known human cremains, concrete, mixtures of the two, and questionable sets of cremains were acid digested and analyzed for 21 elements by Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES). Variable cluster and principle component analyses identified the seven elements (Sb, B, Li, Mn, Sr, Tl, and V) used to develop discriminant functions to classify questionable sets into two groups: cremains and concrete. The discriminant analysis shows that at the 0.90 probability level, mixtures of 50% or less human content were classified as concrete. Mixtures with 90% human content classified as cremains. Sixty percent and 75% human content mixtures remained in the questionable classification, but as the concentration of human increased in the mixture, the probability of assignment to the known cremains group increased. Most of the questionable human samples classified as cremains. This is a pilot study and cannot yet satisfy Daubert standards for courtroom admissibility, but it indicates that it is possible to determine the legitimacy of cremains using elemental analysis by ICP-OES coupled with multivariate statistical analysis. 相似文献
122.
123.
Students of state politics have long been interested in the partisanship and the degree of interparty competition in the American states. This has led to numerous attempts to quantify state-level partisanship and competition, the most significant by Ranney (1965). Interestingly, however, scholars have never specified clearly the relationship between these two concepts as measured by the Ranney index. This research attempts to do just that and reveals that the two are different measures which are related systematically. More important, understanding changes in a state's partisanship is determined to be crucial to understanding changes in its level of two-party competition. As such, in order to explain changes in partisanship and competition across the American states from the 1950s to the 1970s, we focus on accounting for changes in partisanship. To this end, changes in aggregate demographic variables account very well for states' movement along the Ranney index over the last 3 decades.The names of the authors appear in alphabetical order and imply that this paper is in every way a collaborative enterprise. 相似文献
124.
Campbell T 《Annals of health law / Loyola University Chicago, School of Law, Institute for Health Law》2007,16(2):213-39, table of content
Examining the Federal Trade Commission's retrospective challenge of a hospital merger in Illinois, the author provides an insightful analysis of one of the agency's major antitrust enforcement initiatives in health care in the last several years. Because the case produced several departures from antitrust orthodoxy, these departures may affect the trials of future hospital mergers that are challenged. The author reviews the methodology and evidence of the case, and he identifies theories and best practices that are important for administrators and legal practitioners to implement in future mergers. 相似文献
125.
Tom Christensen Lisheng Dong Martin Painter Richard M. Walker 《Public administration review》2012,72(6):798-806
This article explores the attitudes of officials in the upper echelons in Chinese provincial and local government toward the origins of administrative reform. The authors examine the somewhat dichotomous argument that reform imitates the West or is indigenous and contend that both influences are present. Data drawn from a survey of party cadres and government officials show that cultural factors (time in government, overall knowledge of administrative reforms, together with familiarity with the move from a planned system of government to a market economy) and structural variables (upper echelon and familiarity with business management techniques) are correlated with learning from the West. Cadres and officials who spend more time managing outward and those who are familiar with performance assessment do not learn from the West. The theoretical and research implications of these findings—that learning from the West is an important influence on the adoption of administrative reforms in China—are discussed. 相似文献
126.
Jens Peter Frølund Thomsen 《Scandinavian political studies》2012,35(2):159-178
As European majority members are often hostile toward ethnic minorities, it is important to identify sources that reduce opposition to immigrants. First, focusing on Denmark, this article examines whether intergroup contact influences attitudes toward ethnic minority rights (henceforth: ‘ethnic tolerance’). Second, this study tests whether the contact‐tolerance relationship is mediated by self‐disclosure and symbolic threat. Furthermore, contact is measured as workplace contact in order to reduce self‐selection biases. The empirical tests are performed on a Danish high‐quality national probability sample from 2009 (N = 1,929). Analysis shows that intergroup contact generates ethnic tolerance because workplace contact weakens threat perceptions and stimulates disclosure of personal information. Generally, these results suggest that regular intergroup contact can improve ethnic relations in contemporary democracies. 相似文献
127.
128.
In this paper, we (1) examine the interactions of financial variables and the macroeconomy within the block-restriction vector autoregression model and (2) evaluate to what extent the financial variables improve the forecasts of GDP growth and inflation. For this reason, various financial variables are examined, including those unexplored in previous literature, such as the share of liquid assets in the banking industry and the loan loss provision rate. Our results suggest that financial variables have a systematic and statistically significant effect on macroeconomic fluctuations. In terms of forecast evaluation, financial variables in general seem to improve the forecast of macroeconomic variables, but the predictive performance of individual financial variables varies over time, even though it strengthens during the 2008?C2009 crisis. The results give some support for the risk-taking channel of monetary policy, as the level of the monetary policy rate is positively associated with the loan loss provision rate of commercial banks. Finally, a more stable financial system is found to contribute to faster economic growth. 相似文献
129.
近年来网络犯罪数量呈快速上升的势头,但是却缺乏一种有效的取证方法来处理这些案件.调查人员通常依靠调查大量繁琐的源代码来了解犯罪模型及提取证据,但这种方式需要很多的人力与时间,并可能导致人为错误.为了克服调查人员可能出现的这些潜在错误,我们在本文中提出了一种半自动的方法来解决这些问题.该方法集成了用户视图(基于取证调查人员的高级别研究)和系统视图(基于对源代码的自动分析),来帮助调查人员精确调查的范围.本文应用此方法分析了一个真实案件,证明了方法的可行性,同时帮助调查人员高效地确定了调查范围和犯罪模型.可见这种半自动方法可以对大量有多个来源的电子证据进行有效分析,提高了网络犯罪案件取证的效率和可靠性. 相似文献
130.
Blencowe T Pehrsson A Mykkänen S Gunnar T Lillsunde P 《Forensic science international》2012,217(1-3):107-112
The authors examined driving under the influence of drugs (DUID) cases which were found to be positive in whole blood for cannabis in Finland from 2006 to 2008. Factors studied were the number of cases positive for any combination of Δ(9)-tetrahydrocannabinol (THC) and the metabolites 11-hydroxy-Δ(9)-tetrahydrocannabinol (THC-OH) and 11-nor-9-carboxy-Δ(9)-tetrahydrocannabinol (THC-COOH). Concurrent use of amphetamines, benzodiazepines and/or alcohol was also recorded, as well as the drivers' age and gender. Altogether 2957 cannabis positive cases were retrieved from the database of the Alcohol and Drug Analytics Unit, National Institute for Health and Welfare. Drug findings were examined in relation to the zero-tolerance policy operated towards DUID in Finland. The number of cannabis positive cases in each year was approximately 1000 and the main demographic of cases was males aged 20-30 years. In the majority of cases (51.6%) the inactive metabolite THC-COOH was the only indication of cannabis use, however, associated use of amphetamines (58.8% of all cases) and/or benzodiazepines (63.9%) in cannabis positive drivers was very common. Detections for amphetamines and/or benzodiazepines were especially common in drivers with THC-COOH only (92.8% of these cases). Combined use of alcohol (25.7%) was also prevalent. Suspect DUID cases generally arise from suspicion on behalf of the police and the zero-tolerance policy offers an expedient means to deal with the challenges presented in DUID, particularly in view of the high incidence of multiple drug use - the legislation is not unduly punitive when enforced in this manner. 相似文献