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   1737篇
  免费   114篇
各国政治   159篇
工人农民   107篇
世界政治   211篇
外交国际关系   129篇
法律   918篇
中国共产党   1篇
中国政治   2篇
政治理论   321篇
综合类   3篇
  2023年   21篇
  2022年   20篇
  2021年   38篇
  2020年   63篇
  2019年   71篇
  2018年   100篇
  2017年   109篇
  2016年   106篇
  2015年   69篇
  2014年   94篇
  2013年   268篇
  2012年   77篇
  2011年   61篇
  2010年   40篇
  2009年   43篇
  2008年   53篇
  2007年   61篇
  2006年   56篇
  2005年   51篇
  2004年   55篇
  2003年   50篇
  2002年   35篇
  2001年   48篇
  2000年   43篇
  1999年   18篇
  1998年   15篇
  1997年   17篇
  1996年   6篇
  1995年   12篇
  1994年   12篇
  1993年   11篇
  1992年   13篇
  1991年   9篇
  1990年   7篇
  1989年   5篇
  1988年   8篇
  1987年   7篇
  1985年   4篇
  1984年   3篇
  1983年   4篇
  1982年   6篇
  1980年   4篇
  1979年   6篇
  1978年   5篇
  1973年   8篇
  1972年   3篇
  1971年   8篇
  1968年   3篇
  1966年   3篇
  1965年   5篇
排序方式: 共有1851条查询结果,搜索用时 15 毫秒
71.
This study examined the factors associated with resistance to peer pressure toward antisocial behaviors among a sample of Mexican-origin adolescents (n=564) living in a large Southwestern city in the U.S. A model examining the influence of generational status, emotional autonomy from parents, and self-esteem on resistance to peer pressure was tested independently for boys and girls. Gender differences emerged in the factors that influenced resistance to peer pressure. Results indicated that resistance to peer pressure was influenced by generational status and emotional autonomy from parents for both boys and girls. However, self-esteem was found to influence resistance to peer pressure only for boys.Mayra Y. Bámaca is a graduate student in Family and Human Development at Arizona State University. Her research interests include adolescent development among ethnically diverse populations, the influence of contextual factors in development, parenting adolescents, and resiliency among Latino adolescents and their families. This work was based on the master’s thesis of the first author.Adriana J. Uma?a-Taylor received her Ph.D. from the University of Missouri-Columbia and is currently an Assistant Professor of Family and Human Development at Arizona State University. Her research interests include ethnic identity formation during adolescence and resilience among Latino adolescents and their families.This study was supported, in part, by a grant to the second author from the Fahs Beck Fund for Research and Experimentation of the New York Community Trust.  相似文献   
72.
Legislators who control the congressional agenda have a significant advantage over the membership at large. Policy gatekeepers can restrict change to outcomes they prefer over the status quo and can use this prerogative to keep a legislative party or coalition unified. This article examines agenda-setting rules in 26 Latin American chambers, shows why the institutional structure is theoretically relevant, and reveals some implications for policymaking with evidence from Argentina, Chile, and Mexico. Majority leaders in the Argentine and Chilean lower chambers have successfully blocked passage of legislation opposed by most of their fellow partisans despite the lack of codified gatekeeping rights. Since 1997, none of the major Mexican parties has benefited from the gatekeeping rights established in the rules. Instead, the benefits have come from the parties' advantageous position with respect to the other parties on the steering committee setting the plenary agenda.  相似文献   
73.
74.
Allele frequencies for six DNA polymorphisms have been studied in a population sample from Cantabria (middle north Spain) using the polymerase chain reaction. The HLA-DQA1 locus was analyzed by the reverse dot-blot technique and the other five by polyacrylamide gel electrophoresis followed by silver staining. Six alleles were found for HLA-DQA1. 15 alleles for D1S80, 6 alleles for HUMTHO1 and HUMCSF1PO, 7 for HUMTPOX and 8 alleles for HUMVWA. The 21 repeat allele in HUMVWA had not previously been reported in a Spanish population. The genotype distributions met Hardy-Weinberg expectations for all the systems and some statistical parameters of forensic interest were calculated. Comparisons with other populations revealed significant differences for HLA-DQA1, HUMVWA and HUMTHO1, with interracial differences being more pronounced than between Spanish populations. The HUMVWA system showed the highest forensic efficiency of the six polymorphisms studied.  相似文献   
75.
Advances in the diagnosis of wound vitality: a review   总被引:2,自引:0,他引:2  
The diagnosis of the vital origin of wounds in many cases remains an unsolved problem for the forensic pathologist. Practical experience enables the expert to diagnose the vital or postmortem origin of wounds on the basis of macroscopic examination. In some cases, optic microscopy is used to confirm the diagnosis. In many other cases, additional more sensitive and specific markers of vitality are required. In the past 50 years, comprehensive research on this topic has resulted in a better understanding of the acute inflammatory reaction. The development and application of sensitive and specific markers through research in the areas of histochemistry, enzymology, and biochemistry has provided a partial solution to the problems involved in wound vitality diagnosis. A review of this challenging area of forensic pathology, including an explanation of these methods and markers, is presented in this paper.  相似文献   
76.
The amplification of the STR DYS391, using the primers described in the Genome Data Base (GDB: G00-365-251), shows not only an additional band to the Y-specific one in males with a size range of 26 bp less than those of DYS391 locus alleles, but also a polymorphic pattern in females in the same size range as the additional band observed in males. The DYS391 pattern in families reflects a Y-specific linked locus and also a polymorphic X locus with an X-linked pattern of inheritance. A first screening in the X homologous locus allowed the identification of five different alleles. Allele frequencies were explored in different population groups for both the Y locus and the homologous locus in the X chromosome showing a similar allele distribution pattern in the X and Y homologous loci. An alternative reverse primer was designed to amplify the Y-chromosome specific STR in order to improve the specificity and applicability of this system to forensic genetics. Comparative results of the amplification with the new and the previously described primers proved that with this new primer there is a substantial increase in the specificity of the amplification. Moreover, a smaller fragment is amplified with a size out of the range of the alleles of the other Y-STRs usually used in forensic applications, therefore simplifying its inclusion in multiplex systems.  相似文献   
77.
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   
78.
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   
79.
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   
80.
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