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   306篇
  免费   15篇
各国政治   19篇
工人农民   12篇
世界政治   35篇
外交国际关系   27篇
法律   175篇
中国政治   4篇
政治理论   47篇
综合类   2篇
  2023年   3篇
  2022年   4篇
  2021年   6篇
  2020年   8篇
  2019年   8篇
  2018年   6篇
  2017年   12篇
  2016年   10篇
  2015年   12篇
  2014年   10篇
  2013年   49篇
  2012年   13篇
  2011年   15篇
  2010年   3篇
  2009年   9篇
  2008年   18篇
  2007年   24篇
  2006年   17篇
  2005年   15篇
  2004年   18篇
  2003年   12篇
  2002年   4篇
  2001年   7篇
  2000年   7篇
  1999年   2篇
  1998年   4篇
  1997年   5篇
  1996年   1篇
  1995年   2篇
  1994年   2篇
  1992年   1篇
  1990年   3篇
  1987年   1篇
  1986年   2篇
  1985年   1篇
  1984年   2篇
  1977年   2篇
  1975年   1篇
  1973年   1篇
  1968年   1篇
排序方式: 共有321条查询结果,搜索用时 167 毫秒
101.
The English-language text of the 1898 Treaty of Paris, the accord conceding Puerto Rico to the United States, misspelled the island's name as Porto Rico. The treaty's ratification entrenched the error in US law and prompted a decades-long campaign to restore the territory's original name. More than a comedy of errors, this incident exposes conflicting interpretations of US citizenship and the worthiness of different sets of citizens. Puerto Ricans discovered that the statutory citizenship they acquired was attenuated by their perceived worthiness: a status limited by their membership of the so-called Spanish race.  相似文献   
102.
Internationally sponsored disarmament and demobilisation in Afghanistan was characterised by a marked divergence between the bureaucratic process designed by the UN and the political reality of disarmament. The bureaucratic process had several flaws of its own, which were particularly obvious in the case of DIAG, but the main reason for the substantial failure of disarmament was the absence of political will among key Afghan partners. International players in the process choose to compromise on ratherunfavourable terms, saving the façade of demobilisation thanks to the formal disbandment of the militias incorporated under the Ministry of Defence, but in fact allowing thousands of militias to continue operating throughout the country. The article shows how the very limited impact of DDR and even more so DIAG was already obvious in the early stages of the process and was deliberately ignored. The article concludes that the compromise could at least have achieved some limited aims, such as delegitimising the militias, had not many of their leaders been allowed to compete successfully for parliamentary seats shortly afterwards.  相似文献   
103.
Judge Cassese presents arguments in favour of the use of international courts in order to punish war crimes. He argues that the application of justice through a court is better in certain circumstances than amnesties. He examines the merits of international courts rather than national courts, but acknowledges that at present there are several major stumbling blocks to an effective international criminal justice system.  相似文献   
104.
In this paper the concept series of decisions is introduced and defined as the total number of decisions made in the attainment of a goal. The series are analytically divided into two types of decisions, programming and implementation—the first ones are those made during the process of converting policy goals into programs, and the second, those made during the implementation of the programs. The distinction is important because different actors and institutions are involved in the two phases. It is hypothesized that the relation between the time of programming decisions and the time of implementation of decisions tends to be zero the less effective and the less numerous the organizations participating in the programming phase. A list of factors which could be useful in the process of testing and modifying the hypothesis is presented. The division of health environment of the health ministry of Colombia is used to exemplify the concept of series of decisions, and to show the utility of the analytical distinction between programming and implementation decisions.The field work for this study was done in 1970 under the sponsorship of the Division of Research in Epidemiology and Communications Sciences (RECS) of the World Health Organization. The research was conducted at the Ministry of Public Health of Colombia. I am very grateful to Dr. Antonio Ordonez Plaja, Minister of Public Health at the time of the research. Without his continuous help, encouragement and understanding, this work would not have been possible.  相似文献   
105.
106.
The polymorphism of nine STR loci has been studied in a sample of 598 individuals from the population of Alagoas, Northeastern Brazil. Determination of the allele frequencies as well as of several commonly used statistics in forensic and paternity testing were defined. The most polymorphic loci were TH01 and D7S317. The exact test demonstrated that the nine loci analyzed in the population have no deviation from Hardy-Weinberg equilibrium (P > 0.05).  相似文献   
107.
108.
The mtDNA analysis (mtDNA) is increasingly being demanded for forensic purposes due to the fact that many times the use of standard nuclear marker fails to analyze degraded samples (such as bones) and specially for the analysis of hair shafts (a common sample in the crime scene). However, analysis of mtDNA sequencing implies a great lab effort when a high number of samples must be analyzed.The present work introduces a novel and reliable method for the screening of mtDNA variation in the first and second hypervariables (HV1 and HV2) regions which we have denominated fluorescent single strand conformation polymorphism (SSCP) of overlapping fragments (FSSCP-OF). FSSCP-OF is based on the basic theory of SSCP analysis and combines two complementary strategies: the use of PCR amplified overlapping fragments and fluorescent detection technology. The overlap region contains a high percentage (50%) of the d-loop mtDNA variation and for this reason, the probability to detect a polymorphic position by SSCP analysis is clearly increased in comparison to conventional SSCP methods due to the fact that the same polymorphic position is usually placed in a different "relative" position in the two overlapped fragments. The use of multicolor fluorescent technology allows also the multiplex amplification of overlapping fragment and its subsequent analysis in an automatic sequencer. We have analyzed 50 samples of unrelated individuals through the FSSCP-OF technique and we have found that using this methodology the probability to distinguish two samples with different sequences is close to 100%. FSSCP-OF has other important advantages with respect to previous screening methods, such as the automation and standardization of the protocols, which is of special interest for the forensic routine.  相似文献   
109.
110.
The knowledge of the discriminating power of analytical techniques used for the differentiation of writing inks can be useful when interpreting results. Ultraviolet-visible (UV-VIS) spectrophotometry, thin layer chromatography (TLC), and diffuse reflectance Fourier transform infrared spectroscopy (FT-IR) were used to examine a population of 21 black and 12 blue ballpoint writing inks. Based on corroborative results of these methods, the discrimination power for UV-VIS, TLC, and FT-IR was determined to be 100% and 98% for the black and blue inks, respectively. Generally, TLC and UV-VIS can be used to differentiate the colorant components (i.e., dyes and some pigments) found in inks. As FT-IR can be utilized to identify some of the noncolorant components, it was determined to be an excellent complementary technique that can be implemented into an analytical scheme for ink analysis.  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