首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1848篇
  免费   92篇
各国政治   135篇
工人农民   110篇
世界政治   278篇
外交国际关系   129篇
法律   949篇
中国政治   3篇
政治理论   332篇
综合类   4篇
  2023年   20篇
  2022年   16篇
  2021年   36篇
  2020年   56篇
  2019年   74篇
  2018年   105篇
  2017年   104篇
  2016年   94篇
  2015年   61篇
  2014年   77篇
  2013年   310篇
  2012年   72篇
  2011年   67篇
  2010年   40篇
  2009年   38篇
  2008年   57篇
  2007年   62篇
  2006年   65篇
  2005年   56篇
  2004年   47篇
  2003年   54篇
  2002年   44篇
  2001年   40篇
  2000年   46篇
  1999年   19篇
  1998年   23篇
  1997年   17篇
  1996年   10篇
  1995年   13篇
  1994年   17篇
  1993年   18篇
  1992年   17篇
  1991年   11篇
  1990年   9篇
  1989年   10篇
  1988年   8篇
  1987年   9篇
  1986年   7篇
  1985年   6篇
  1984年   6篇
  1983年   5篇
  1982年   16篇
  1981年   6篇
  1980年   8篇
  1979年   9篇
  1978年   10篇
  1977年   6篇
  1973年   9篇
  1971年   8篇
  1965年   5篇
排序方式: 共有1940条查询结果,搜索用时 78 毫秒
111.
Analysis of eight STR loci in two Hungarian populations   总被引:1,自引:0,他引:1  
A collection of eight STR loci (D3S1358, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317, D7S820) was used to generate allele frequency databases for two Hungarian population samples, Caucasians from the Budapest area and Romanies from Baranya county. During the analysis two intermediate sized alleles and a sequence variant allele were observed at the D7S820 locus. All three types of allelic variants were found to have modification (deletion, insertion, transversion) in the same block of a (T)(9) stretch located within the 3' flanking region of each allele, which may indicate a possible higher mutation rate of this (T)(9) block. For the loci D3S1358 and D7S820 the Romany population database showed departures from Hardy-Weinberg equilibrium. The forensic efficiency values for the Romany population were slightly different from those found in the Hungarian Caucasian population. Comparing the allele frequency values by G-statistic, calculating the F(st) indices and with the pairwise comparisons of inter-population variance, the two Hungarian populations could be distinguished using data of the eight STR loci.  相似文献   
112.
Act of XIX/1998 on Criminal Procedure that had become known in theeyes of the public and the legal sciences as The New Code on CriminalProcedure was promulgated by the Hungarian Parliament on its sessionof 10th of March 1998. The reason for the creation of such an Act was theeagerness to finally get rid of the criminal procedure act of the socialistera, e.g. to get rid of its principle of equality of two main phases: theinvestigation and the procedure in front of the court. Also it was among thepurposes of the new act to adjust our rules of procedure to the regulationsof the Western European Countries. The legislator was took into considerationthe general principles and institutions of Act XXXIII of 1896 on CriminalProcedure, without reviving its surpassed parts. The practices of the Strasbourginstitutes were considered as well.  相似文献   
113.
This article examines the relationship between conservative Protestant doctrine and economic policy attitudes. Building upon Weber's (1930) classic (and controversial) thesis that Calvinist thought inspired the capitalist spirit, we posit that the individualistic theology of fundamentalists, evangelicals, and charismatics often engenders political preferences for individualistic economic policies. We test this hypothesis by (1) performing a series of cross-sectional ordered probit analyses to understand the independent degree of association between doctrinal belief and economic attitudes toward taxing, spending, and the role of government, (2) creating and testing a structural equation model to assess various hypothesized paths of influence, and finally, (3) using 1994–96 NES panel data to assess the degree to which changes in an individual's doctrinal beliefs produce changes in his or her economic attitudes. Results lend substantial support to the efficacy of Weber's thesis, and point to religious belief as one exogenous agent of core political values.  相似文献   
114.
ABSTRACT

The article concludes the Special Issue, Illiberal Politics in Southeast Europe, on the retreat of liberal democracy in the region. It focuses on the central themes that link all the papers together: free and fair elections, media freedom, judicial independence, privileged access to public resources and the role of civil society. It seeks to disentangle the causes and consequences of illiberal politics in the region and explores the similarities in the illiberal practices and strategies incumbents use with the aim of staying in power indefinitely. The main argument is that democratic backsliding in Southeast Europe is deeply rooted in the unfinished transitions of the 1990s, which gave rise to new political and economic elites and that blending those two into one resulted in the dominance of the executive over the judiciary and legislature. These new elites became entrenched during the wars and conflicts that affected the region. The enabling factors were of societal origin – clientelist practices, corruption, nepotism and mistrust in politics accompanied by external factors – as well as international pull and push factors (from the EU and Russia) along with a domino effect of democratic backsliding in the region.  相似文献   
115.
116.
This ecological study examined the association between seven socioeconomic indicators (GDP, unemployment rate, female labor force participation rate, alcohol expenditure, marriage rate, percentage of births outside of marriage, and indictable crime rate) and total, male, and female rates of suicide and suicide plus undetermined death in Ireland during the period 1968-2000. Analysis of the data expressed as absolute values showed highly significant associations between the socioeconomic indicators and the total, male, and female suicide rates. However, these associations were explained by the strongly trended data. The trended nature of the data was removed by using year-to-year differences. Analysis of the first-differenced data showed that none of the socioeconomic indicators was associated with the total, male, or female suicide rates with the exception of indictable crime, which had a significant independent effect on the female suicide rate (coefficient = 2.0, p < .01) but not on suicide plus undetermined death. This study highlights the need to use econometric methods in time-trend analyses, the lack of age-sex specific exposure data in this area, and the challenge of understanding trends in suicide in their socioeconomic context.  相似文献   
117.
118.
A qualitative and quantitative analytical method was developed and validated for the determination of 49 licit and illicit drugs in oral fluid. Small oral fluid samples, volume 1mL, were collected from volunteers using a modified Omni-Sal device and the analytes were extracted from an oral fluid/buffer mixture using a single Bond Elut Certify solid phase extraction cartridge. Liquid chromatography-tandem mass spectrometry (LC-MS-MS) and gas chromatography-repetitive full scan mass spectrometry (GC-MS) were used in parallel to analyze the extracts for the targeted drugs. Extracts were analyzed by GC-MS in their underivatized form and as their pentafluoropropionyl derivatives. Deuterated internal standards were used for quantification of drugs of abuse by LC-MS-MS to minimize matrix effects. Methadone-d(9) and tumoxetine were used as the internal standards for quantification of non-derivatized and derivatized analytes respectively by GC-MS. Linearity was demonstrated over the range 5-200 ng/mL and limits of detection were less than 4 ng/mL for each drug analyzed. The method demonstrated acceptable recoveries for most of the analytes and good intra- and inter-day precision. Acquisition of data by repetitive full scan GC-MS allows the addition of further analytes to the target menu.  相似文献   
119.
The morphology of the second and third instars of Chrysomya villeneuvi Patton, a fly species of forensic importance, was presented by use of light microscopy. Both instars were of hairy appearance, bearing elongated tubercles along the abdominal and caudal segments. The anterior spiracle had 13-15 papillae. Minute dark spots were observed to thoroughly cover the tubercle's surface, with 4-6 strong dark tips. Regarding the third instar, the intersegmental spines between the prothorax and mesothorax were heavily pigmented. The posterior spiracle had a thick and heavily pigmented incomplete peritreme. The surface and tip of the tubercles was covered with heavily pigmented sharp spines. The integument of the body was covered with numerous distinct net-like patches. A comparison with another well-known hairy maggot, Chrysomya rufifacies (Macquart), was discussed.  相似文献   
120.
Degradation of human DNA extracted from forensic stains is, in most cases, the result of a natural process due to the exposure of the stain samples to the environment. Experiences with degraded DNA from casework samples show that every sample may exhibit different properties in this respect, and that it is difficult to systematically assess the performance of routinely used typing systems for the analysis of degraded DNA samples. Using a batch of artificially degraded DNA with an average fragment size of approx. 200 bp a collaborative exercise was carried out among 38 forensic laboratories from 17 European countries. The results were assessed according to correct allele detection, peak height and balance as well as the occurrence of artefacts. A number of common problems were identified based on these results such as strong peak imbalance in heterozygous genotypes for the larger short tandem repeat (STR) fragments after increased PCR cycle numbers, artefact signals and allelic drop-out. Based on the observations, strategies are discussed to overcome these problems. The strategies include careful balancing of the amount of template DNA and the PCR cycle numbers, the reaction volume and the amount of Taq polymerase. Furthermore, a careful evaluation of the results of the fragment analysis and of automated allele calling is necessary to identify the correct alleles and avoid artefacts.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号