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   1210篇
  免费   59篇
各国政治   62篇
工人农民   94篇
世界政治   93篇
外交国际关系   112篇
法律   617篇
中国共产党   1篇
中国政治   19篇
政治理论   270篇
综合类   1篇
  2023年   11篇
  2022年   16篇
  2021年   40篇
  2020年   41篇
  2019年   52篇
  2018年   54篇
  2017年   56篇
  2016年   57篇
  2015年   43篇
  2014年   59篇
  2013年   197篇
  2012年   54篇
  2011年   47篇
  2010年   25篇
  2009年   42篇
  2008年   38篇
  2007年   55篇
  2006年   36篇
  2005年   19篇
  2004年   34篇
  2003年   23篇
  2002年   25篇
  2001年   19篇
  2000年   22篇
  1999年   14篇
  1998年   12篇
  1997年   14篇
  1996年   17篇
  1995年   13篇
  1994年   11篇
  1993年   11篇
  1992年   14篇
  1991年   12篇
  1990年   11篇
  1989年   7篇
  1988年   8篇
  1987年   3篇
  1986年   4篇
  1985年   3篇
  1984年   11篇
  1982年   6篇
  1981年   4篇
  1980年   2篇
  1979年   3篇
  1978年   6篇
  1977年   5篇
  1974年   2篇
  1969年   3篇
  1967年   1篇
  1966年   2篇
排序方式: 共有1269条查询结果,搜索用时 15 毫秒
941.
942.
Fingerprinting brushes have the potential to collect and transfer DNA during powdering. Squirrel-hair fingerprint brushes exposed to specific sets of saliva stains and brushes used in routine casework were tested for their ability to collect and transfer DNA containing material using standard DNA extraction procedures and AmpFlSTR Profiler Plus amplification and typing procedures. The tests found that the risk of transferring DNA during powdering and having a detrimental impact on the analysis increases if the examiner powders over either biological stains (such as blood or saliva) or very fresh prints and uses more sensitive PCR amplification and typing procedures. We advocate caution when powdering prints from which DNA may also be collected and provide options for consideration to limit the risk of transferred DNA contamination while fingerprinting.  相似文献   
943.
There is some debate about whether sex offenders are similar to non-sex offenders. It is known that sex and non-sex offenders are heterogeneous groups. Comparative studies must take this heterogeneity into account. Based on an aggregated database, a study was conducted among adjudicated juvenile (sex) offenders. The sample consisted of juvenile male sex and non-sex offenders who had been subjected to a psychological assessment at the request of the judge or district attorney. The central question focused on the differences between juvenile sex offenders, in particular rapists and sexual assaulters (n = 57), child molesters (n = 55), and non-sex offenders: violent (n = 85) and nonviolent offenders (n = 80). The results demonstrated that sex offenders differ from non-sex offenders with regard to demographic characteristics, problem behavior, and personality traits. Some reference is made regarding future research.  相似文献   
944.
Methaqualone (2-methyl-3-o-tolyl-4(3H)-quinazolinone) is the illicit synthetic drug of choice amongst South African drug users. Historically police and forensic investigation has proven that all methaqualone seized by the South African Police Service originates from illicit manufacturing sites both inside, and outside South Africa's borders. From a drug enforcement, and forensic point of view it is, thus, of utmost importance that the various synthetic routes available to the illicit "chemist" are fully documented and understood. This is a prerequisite for effective illicit laboratory investigation, as well as chemical and precursor monitoring. This paper gives a brief introduction to the current status with regard to methaqualone use and production in South Africa, as well as an extensive review of the synthesis of methaqualone and selected isomers reported since 1946. A table summarizing synthetic routes reported in 32 reference sources is provided.  相似文献   
945.
Local governments throughout the world are assuming a more important role in economic development of their communities as an increasing number of governments begin to decentralise powers and functions. As these lower levels of government seek sustainable local economic development (LED) strategies the human rights approach towards development becomes pertinent as globalisation accelerates. This article proposes an emphasis on socio‐economic rights as the basis for sustainable LED in developing countries. The article is based on the experience of South African local government in the period after 1994, leading up to the first democratic local government elections on 5 December 2000. Proceeding from the view that the promotion of human rights is necessary for the promotion of economic development, the article critically assesses the role of local government in the promotion of LED through a rights‐based approach. It is argued that the identification in the South African Constitution of local government with basic service provision (recently emphasised by a Constitutional court judgement) will place socio‐economic rights at the centre of LED strategies in South Africa. It is argued that this is indeed the most appropriate cornerstone of LED in South Africa. However, the transformation process that leads the country towards its progressive Constitution needs to be maintained and this article identifies five broad areas for transformation that may still be needed to entrench an adequate human rights culture within the sphere of local governance. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   
946.
The aim of this study was to examine the development of quality of attachment of adolescents to their parents and siblings during adolescence and the role that gender differences play in this development, using latent growth curve analysis. In 288 families, adolescents reported on their attachment relationships with their parents and siblings. Quality of attachment changes during adolescence, and these changes are influenced by both gender of the adolescent and gender of the attachment figure. Results showed that change in mean level of quality of attachment to mother appeared to be nonlinear for boys, whereas mean level of attachment of adolescent girls to their mothers showed a linear decline. Results for attachment to father were opposite, with a linear decline in quality for boys, and a nonlinear development for girls. Quality of attachment to sibling showed differential development depending on gender composition of the sibling dyad.  相似文献   
947.
The Taiwan Strait crisis of 1996 was the greatest challenge to Sino‐American relations in several decades. This study examines the crisis and its implications for US security policy. It outlines US policy toward the defense of Taiwan, discusses the US response to Beijing's military intimidation of Taiwan and analyzes several of the major lessons gleaned from the crisis. The paper suggests that, while China's aggressive behavior should not lead to a dramatic shift in the American position toward Taiwan's defense, some modest adjustments in policy may be warranted.  相似文献   
948.
European Journal of Political Research -  相似文献   
949.
The performance of two commercial multiplex kits that together amplify the 13 core short tandem repeat (STR) loci currently in use by forensic laboratories and the U.S. national Combined DNA Indexing System (CODIS) were evaluated. The typing systems examined were AmpFlSTR Profiler Plus and AmpFlSTR COfiler (PE Applied Biosystems, Foster City, CA). Electrophoretic separation and detection of the fluorescent PCR products was achieved by capillary electrophoresis (CE) using an ABI Prism 310 Genetic Analyzer. The studies addressed the on-site validation of the instrument, the software, and each typing system. These studies included instrument sensitivity, resolution, precision, binning, peak height ratios, mixtures, stutter, and the amplification of non-probative and simulated forensic samples. Other additional developmental-type work is also reported herein, such as species specificity testing and amplification of environmentally insulted samples. Amplification conditions were found to be robust and the primer sets shown to be specific to human DNA. Stutter and peak height ratios fell within limits published by the manufacturer and other laboratories. The data demonstrate that the CE instrument can consistently resolve fragments differing in length by one base and that the +/-0.5 base bin used by the Genotyper software is acceptable for making accurate allele calls. Correct typing results were obtained from non-probative and simulated case samples, as well as samples exposed to outdoor environmental conditions. The results support the conclusion that DNA extracted from biological samples routinely encountered in the forensic laboratory can be reliably analyzed with AmpFlSTR Profiler Plus and COfiler using CE.  相似文献   
950.
This paper takes the form of a report on the panel discussion held at the conclusion of the 1992 meetings of the European Group for the Study of Deviance and Social Control in Padua in September 1992. In the light of a perceived crisis of relevance for earlier, 1970s notions of critique in criminology, and in the context of a conference dedicated to the theme of human rights in a uniting Europe, eight panellists from Italy, England, and Canada via Ireland debated their different versions of the project of critical criminology in the last years of the twentieth century. Each of these presentations is summarised here, and an attempt is made to recognise the emergence of a debate between a human rights criminology, eversensitive to the possibilities of repression and control in Fortress Europe, and an alternative perspective, predicated perhaps on some notion of Social Defence and a realist programme of crime prevention and control across free market Europe.  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