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   8668篇
  免费   201篇
各国政治   318篇
工人农民   422篇
世界政治   502篇
外交国际关系   287篇
法律   5968篇
中国政治   52篇
政治理论   1277篇
综合类   43篇
  2020年   94篇
  2019年   105篇
  2018年   213篇
  2017年   157篇
  2016年   256篇
  2015年   122篇
  2014年   148篇
  2013年   653篇
  2012年   300篇
  2011年   289篇
  2010年   136篇
  2009年   186篇
  2008年   184篇
  2007年   197篇
  2006年   202篇
  2005年   538篇
  2004年   276篇
  2003年   194篇
  2002年   163篇
  2001年   367篇
  2000年   324篇
  1999年   223篇
  1998年   90篇
  1997年   84篇
  1996年   79篇
  1995年   74篇
  1994年   84篇
  1993年   73篇
  1992年   193篇
  1991年   181篇
  1990年   208篇
  1989年   226篇
  1988年   220篇
  1987年   210篇
  1986年   187篇
  1985年   179篇
  1984年   122篇
  1983年   120篇
  1982年   69篇
  1981年   75篇
  1980年   56篇
  1979年   82篇
  1978年   62篇
  1977年   53篇
  1975年   71篇
  1974年   88篇
  1973年   72篇
  1972年   65篇
  1971年   60篇
  1970年   58篇
排序方式: 共有8869条查询结果,搜索用时 62 毫秒
51.
Andrew M. Greeley is a priest, sociologist, novelist, and journalist. His scholarly writings concentrate on religion and ethnicity. His other writings range from critiques of the Catholic church to best-selling novels.  相似文献   
52.
This paper describes a collaborative exercise intended to demonstrate whether uniformity of DNA profile results could be achieved between different European laboratories. It was shown that this goal can be obtained provided that a common protocol is followed (specifically the use of a common electrophoretic buffer as being the most important parameter). Generally, lower molecular weight loci (with lower molecular weight fragments) such as YNH24 perform better than higher molecular weight loci such as MS43a. The results of the exercise are discussed in relation to the objectives of the European DNA profiling group (EDNAP).  相似文献   
53.
The authors examine the characteristics of threatening and otherwise inappropriate communications sent to members of the U.S. Congress by a sample of 86 subjects, 20 of whom threatened assassination. We quote excerpts from these letters and provide quantitative data on such variables as the volume, duration, form, and appearance of such communications; the enclosures; the subjects' perceived relationships to the recipients; the thematic content of the communications; and the messages and threats communicated. Comparisons between 43 subjects who pursued encounters with members of Congress and 43 who did not revealed 17 factors associated with such pursuit. In this population, threateners were significantly less likely to pursue an encounter than inappropriate letter writers who did not threaten, regardless of the type of threat or the harm threatened. Inappropriate letters to members of Congress are compared with those directed to Hollywood celebrities. Mentally disordered persons writing to public figures often mention and sometimes threaten public figures other than those to whom the letters are addressed, which raises important issues regarding notification of endangered third parties and the sharing of information among protective agencies.  相似文献   
54.
55.
56.
论运输证券   总被引:1,自引:1,他引:0  
论述了提单的法律性质,分析了关于提单性质的各种学说。认为提单作为证明运输货物交付请求权的有价证券,具有要因、要式、文义、指示、回赎、交付、处分证券的性质,同时提单也具有物权的效力。  相似文献   
57.
We consider the problem of drawing inferences within a legal framework when a person is a suspect for two separate offences. Although we are primarily concerned with scientific evidence the issue inevitably arises as to how that evidence interacts with other, non-scientific evidence. We show that, in this particular context, the evidence can be conveniently classified into three categories that concern, respectively: the first crime only; the second crime only; and evidence that relates to similarities between the two crimes. Two case examples are considered and we consider DNA, fibres and eyewitness evidence. These are viewed from the perspective of a prosecutor who has to decide whether or not to charge a suspect with one or both crimes. Graphical sensivity analyses are presented which have features that are not intuitively obvious.  相似文献   
58.
Fair Trade has become a dynamic and successful dimension of an emerging counter-tendency to the neo-liberal globalisation regime. This study explores some of the dilemmas facing the Fair Trade movement as it seeks to broaden and deepen its impact among the rural poor of Latin America's coffee sector. We argue that the efforts to broaden Fair Trade's economic impact among poor, small-scale producers are creating challenges for deepening the political impact of a movement that is based on social justice and environmental sustainability. The study is based on two years' research and seven case studies of Mexican and Central American small-scale farmer cooperatives producing coffee for the Fair Trade market.  相似文献   
59.
Subsequent to U.S. Border Patrol (USBP) efforts to control illegal immigration throughout the 1990s, concern arose over an apparent increase in deaths of illegal migrants as they began to undertake more treacherous routes to enter the United States from Mexico. In response, the Border Safety Initiative (BSI) was created to increase safety along the southwest border. Using multiple data sources, including the USBP BSI Incident Tracking System, this study evaluated the impact of life‐saving efforts performed under the BSI program. Results indicate that there has been no overall reduction in the rate of migrant deaths since BSI has been in operation. However, an evaluation of BORSTAR search and rescue teams and the 2003 Lateral Repatriation Program (LRP), which returned apprehended migrants from Tucson sector to less hazardous places along the border, were found to be effective in preventing migrant deaths. Policy Implications: Critics of U.S. immigration policy claim that the only way reductions in migrant deaths along the U.S.‐Mexico border can be achieved is through liberalization of immigration policy and relaxing of border security. Yet, for more than a decade, U.S. policy makers have increased restrictions on immigration and have tightened security at the borders. Considering this, alternative means must be deployed in order to save migrant lives in the near term rather than waiting for a reversal of immigration policy. This study suggests that proactive life‐saving measures implemented through a harm‐reduction strategy can have some impact on saving migrant lives.  相似文献   
60.
Mit der Einführung einer Entgeltpflicht für die Entnahme von Wasser in Nordrhein-Westfalen ist der erlaubnisfreie wasserrechtliche Eigentümergebrauch in den Mittelpunkt des Interesses gerückt. Denn wer Wasser im Rahmen des Eigentümergebrauchs aus einem oberirdischen Gewässer entnimmt, ist von dieser Entgeltpflicht befreit. Der folgende Beitrag erläutert die im Zusammenhang mit der Gewinnung nichtenergetischer Rohstoffe insoweit relevanten Fragen. * Die Verfasser sind, Mitarbeiter der Anders u.Thomé Rechtsanwaltsgesellschaft mbH in Krefeld  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