全文获取类型
收费全文 | 319篇 |
免费 | 23篇 |
专业分类
各国政治 | 32篇 |
工人农民 | 22篇 |
世界政治 | 36篇 |
外交国际关系 | 16篇 |
法律 | 181篇 |
中国政治 | 2篇 |
政治理论 | 50篇 |
综合类 | 3篇 |
出版年
2023年 | 8篇 |
2022年 | 9篇 |
2021年 | 11篇 |
2020年 | 16篇 |
2019年 | 19篇 |
2018年 | 16篇 |
2017年 | 19篇 |
2016年 | 19篇 |
2015年 | 11篇 |
2014年 | 17篇 |
2013年 | 43篇 |
2012年 | 8篇 |
2011年 | 9篇 |
2010年 | 7篇 |
2009年 | 7篇 |
2008年 | 9篇 |
2007年 | 16篇 |
2006年 | 13篇 |
2005年 | 24篇 |
2004年 | 15篇 |
2003年 | 12篇 |
2002年 | 20篇 |
2001年 | 2篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1996年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1973年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有342条查询结果,搜索用时 0 毫秒
31.
32.
33.
Political Behavior - The recent world-wide trend of female chief executives struggling to maintain public support while facing corruption allegations and scandals poses the question of whether... 相似文献
34.
The recent global rush for farmland in Latin America has produced a dramatic increase in the level of foreign investment in land in Brazil. The current trend accentuates the ongoing process of foreignization of agriculture associated with the production of grains, sugar, ethanol and other commodities, increasing land prices. In response, the Brazilian government reestablished a legal mechanism for ‘controlling’ land-based foreign investment which has proven neither efficient nor effective in solving land concentration. This paper examines this issue by analyzing the causes of the increase in investment as well as the consequences of this process with respect to land prices, critically situating land-based investments and the government's policy response in a broader discussion of the demands of agrarian social movements. 相似文献
35.
Luiz Antonio Ferreira da Silva Beatriz Jatob Pimentel Dalmo Almeida de Azevedo Eliana Neves Pereira da Silva Simone Silva dos Santos 《Forensic Science International Supplement Series》2002,130(2-3):187-188
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
36.
Marta Concheiro Ana de Castro Oscar Quintela Manuel Lpez-Rivadulla Angelines Cruz 《Forensic Science International Supplement Series》2005,150(2-3):221
This paper describes the analytical methodology for the determination of MDMA, MDA, MDEA and MBDB in oral fluid. After a liquid–liquid extraction, the analysis was carried out by high performance liquid chromatography (HPLC), with fluorescence detection. The detector wavelength was fixed at 285 nm for excitation and 320 nm for emission. The mobile phase, a mixture of phosphate buffer (pH = 5) and acetonitrile (75:25), and the column, Kromasil 100 C8 5 μm 250 mm × 4.6 mm, allowed good separation of the compounds in an isocratic mode in only 10 min. The method was validated and showed good limits of detection (2 ng/mL) and quantitation (10 ng/mL) for all the amphetamine derivatives. No interfering substances were detected. A stability study of these compounds in oral fluid stored at three different temperatures (−18, 4 and 20 °C) over 10 weeks was conducted, showing a time-dependent degradation of the four compounds. 相似文献
37.
Ana M. Goy-Yamamoto 《Asia Europe Journal》2004,2(2):271-282
This paper deals with the issue of Japanese youth as the social group that is (r)evolutionising the consumption trends in their society by a cultural change in values and lifestyles. These changes are reflected in new ways of social relations, work, gender issues and mainly consumption patterns. Japanese youth is creating a pop culture of their own that is spreading around East and South-East Asia, affecting their consumption trends as well. Such influence confers a new identity to the region that will be a key issue for marketers in the 21st century.The author thanks the help of the Spanish Ministry of Industry and Technology through the R&D Project BS02003-07810, that enables the funding of this ongoing research. 相似文献
38.
Résumé Les statistiques fédérales au Canada comme aux états-Unis démontrent une croissance alarmante des retours en détention, au
cours de la mise en liberté sous condition. Le modèle de gestion du risque qui émerge actuellement dans le contexte d’une
?nouvelle pénologie? semble mener inévitablement à l’augmentation de ces taux de retour. L’étude présentée dans cet article
examine le processus de libération et le taux de retour qui en découle, enprivilégiant l’analyse desprises de décision et
les mécanismes de gestion des détenus. Dans cette optique, les auteurs ont suivi, pour une période d’un an, tous les hommes
libérés des pénitienciers du Québec en 1993. L’analyse a mis en évidence que le modèle de gestion de risque est à base du
processus de gestion des détenus et semble avoir uneffet notable sur le ?recyclage? des délinquants. De plus, le type de libération
et le type des condition de libération, plut?t que le nombre de condition, font de certains détenus des candidats plus vulnérables
aux mécanismes de gestion derisque. Les ?retours? à la suite de manquements aux conditions de mise en liberté sont importants
et le système carcéral s’alimente donc de plus en plus de ses propres libérés.
相似文献
39.
Latent prints are an important evidence for identification. Nowadays, the technical means, the implementation of image processing techniques and the use of database makes it possible to detect and get information from some prints that seem to be useless at first sight. On the other hand, the possibility of using the print as a DNA source has to be considered, so as to double its identifying value. Human skin is a particularly difficult surface for developing this kind of evidences. Although different methods for locating and developing latent fingerprints on the skin have been already described, it has not been found any method, at the revised bibliography, to obtain and develop invisible lipmarks, that is, lipmarks from protective lipstick, or permanent or long-lasting lipstick. The aim of the work that follows is to determine the effectiveness of several reagents for developing invisible lipmarks on the corpses' skin. Preliminary results show that, under the described experimental conditions, the reagents used, Sudan III, Oil Red O and Sudan Black, are effective for obtaining recent latent lip prints on corpse's skin. 相似文献
40.
Bermejo AM López P Alvarez I Tabernero MJ Fernández P 《Forensic science international》2006,156(1):2-8
A method for the simultaneous determination of cocaine (COC) and cocaethylene (CE) in human hair was developed, using solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) as analytical technique to identify and quantify the drugs. Selected ion monitoring (SIM) mode was used to obtain higher sensitivity. The deuterated-labeled analogues were used as internal standards. The detector response was linear for the drugs studied over the range 0.4-15 ng/mg, with correlation coefficients higher than 0.995. The coefficients of variation oscillated between 0.65% and 14.18% and the accuracy was in the range from 0.73% to 11.20%. The limits of quantitation and detection were found to be acceptable. Finally, this method was applied to 15 hair samples from cocaine users, obtaining positive results in all cases. The mean concentrations were 5.39 ng/mg (range: 0.43-8.98 ng/mg) for cocaine and 1.11 ng/mg (range: 0.42-2.23 ng/mg) for cocaethylene. 相似文献