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   11163篇
  免费   383篇
各国政治   350篇
工人农民   543篇
世界政治   686篇
外交国际关系   372篇
法律   7031篇
中国共产党   34篇
中国政治   133篇
政治理论   2256篇
综合类   141篇
  2021年   73篇
  2020年   163篇
  2019年   155篇
  2018年   247篇
  2017年   287篇
  2016年   323篇
  2015年   258篇
  2014年   257篇
  2013年   1003篇
  2012年   274篇
  2011年   317篇
  2010年   245篇
  2009年   312篇
  2008年   373篇
  2007年   391篇
  2006年   378篇
  2005年   334篇
  2004年   316篇
  2003年   280篇
  2002年   264篇
  2001年   371篇
  2000年   347篇
  1999年   270篇
  1998年   165篇
  1997年   125篇
  1996年   150篇
  1995年   118篇
  1994年   139篇
  1993年   132篇
  1992年   209篇
  1991年   260篇
  1990年   223篇
  1989年   207篇
  1988年   224篇
  1987年   205篇
  1986年   229篇
  1985年   208篇
  1984年   167篇
  1983年   164篇
  1982年   113篇
  1981年   127篇
  1980年   107篇
  1979年   104篇
  1978年   91篇
  1977年   79篇
  1976年   66篇
  1975年   65篇
  1974年   68篇
  1973年   80篇
  1971年   51篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
972.
Current forensic DNA profiling methods rely on the analysis of samples at specialised laboratories with an average turnaround time of several days. The ability to rapidly determine a partial profile of short tandem repeats at the point-of-arrest would be of great benefit to police forces around the world, for example enabling a suspect to be rapidly included or excluded from an investigation. We have developed a homogeneous PCR method for the interrogation of STR loci utilising fluorescent oligonucleotide probes and melting curve analysis. Alleles of the D18S51, TH01 and D8S1179 loci were differentiated and identified on the basis of target length and probe melting temperature. Assay performance was evaluated by comparing melting peak data with the AmpFlSTR® SGM Plus® system. The method is compatible with direct analysis of unpurified buccal swab samples, enabling a partial STR profile to be generated within 1 h.  相似文献   
973.
974.
At least one‐quarter of covered workplaces violated the parental leave requirements of the Family and Medical Leave Act of 1993 (FMLA) when surveyed in 1997. What explains this noncompliance? Using a survey of 389 U.S. workplaces and qualitative interviews with managers in 40 organizations, I demonstrate that noncompliance comes in distinct forms. Some forms of noncompliance result from a failure to update institutionalized—and gendered—policies, practices, and norms. This form of noncompliance (indicated by illegally short leaves) is better explained by the institutional perspective, while outright noncompliance (as evidenced by a lack of leaves) is best explained by rational choice and deviant culture theories.  相似文献   
975.
大学新生在人际交往中存在多种矛盾心理,主要有强烈的交往需要与强烈的孤独感之间的矛盾,过分自尊与自卑的矛盾,传统与现代观念的矛盾,现实交往与虚拟交往心理的矛盾.  相似文献   
976.
When I first arrived here a few months ago, I couldn't help but notice several work projects going on all around me. A new dorm was being built on campus where I would be teach-ing, as well as a courtyard being repaved and bricked in front of the female students' dormitory, and a building next to my gym was being renovated. I wondered how long it would take to finish these large tasks, espe-cially the courtyard, as school would begin in about a week, and it would be a mess for students to have to walk through mud, over piles of sand, and around stacks of bricks to get where they wanted to go.  相似文献   
977.
In an effort to take positive steps toward coping with problems for families and children created by high levels of separation and divorce, ever increasing civil caseloads and the exposure of children to interparental conflict, court‐affiliated educational programs have emerged in the United States for parents separating from their spouse or partner or going through a divorce. This article will provide an overview of the creation of such programs and their development, which includes a discussion regarding the numerous states currently mandating parents to attend. It will summarize some of the research which has been conducted as to the efficacy of the programs and will provide the results of our nationwide research for each state's parent education status. There is a discussion of domestic violence issues and sensitivities in the context of parent education programs and possible future directions for mandatory parent education.  相似文献   
978.
21世纪初西伯利亚和远东的地理政治与地理经济作用正逐渐增长,太平洋地区国家对该地区的兴趣和关注也在飞速增长.莫斯科、北京和华盛顿在广袤的西伯利亚和远东的利益将如何部署,这种部署会建立在合作的基础之上还是会成为引发各种冲突表现的主要原因?它将怎样影响在太平洋地区和全世界的国际关系?一种关于"俄中美三角关系"在西伯利亚和远东广大地区相互作用之前景的观点得出了关于潜在冲突的结论,这种潜在的冲突埋伏在三方态度和利益的差异上.在太平洋地区潜在的国家利益和全球及地区力量分配的改变可能会给三方利益和立场的确定带来调整.  相似文献   
979.
980.
Although flag burnings today rarely draw the amount of attention they received in the late 1980s, efforts to protect the flag have persisted for nearly a decade. Accordingly, the flag protection campaign has captured the interest of intellectuals from various academic backgrounds, including political scientists, egal scholars, and journalists. Conspicuously absent from the literature on flag desecration, however, are sociologists and criminologists. Combining historical evidence with recent cases, this article unveils key sociological aspects of social control, including formal and informal responses to flag desecration.  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