全文获取类型
收费全文 | 573篇 |
免费 | 45篇 |
专业分类
各国政治 | 57篇 |
工人农民 | 22篇 |
世界政治 | 73篇 |
外交国际关系 | 22篇 |
法律 | 321篇 |
中国政治 | 5篇 |
政治理论 | 113篇 |
综合类 | 5篇 |
出版年
2024年 | 1篇 |
2023年 | 13篇 |
2021年 | 9篇 |
2020年 | 19篇 |
2019年 | 23篇 |
2018年 | 15篇 |
2017年 | 27篇 |
2016年 | 33篇 |
2015年 | 26篇 |
2014年 | 30篇 |
2013年 | 129篇 |
2012年 | 39篇 |
2011年 | 20篇 |
2010年 | 14篇 |
2009年 | 9篇 |
2008年 | 24篇 |
2007年 | 26篇 |
2006年 | 17篇 |
2005年 | 20篇 |
2004年 | 18篇 |
2003年 | 15篇 |
2002年 | 14篇 |
2001年 | 10篇 |
2000年 | 15篇 |
1999年 | 6篇 |
1998年 | 5篇 |
1997年 | 5篇 |
1996年 | 5篇 |
1995年 | 3篇 |
1994年 | 2篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1983年 | 3篇 |
1981年 | 2篇 |
1978年 | 2篇 |
1975年 | 2篇 |
1973年 | 2篇 |
1970年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有618条查询结果,搜索用时 15 毫秒
191.
André Barrinha 《Third world quarterly》2017,38(2):253-269
This paper engages with the security dynamics underlying the use of drones and their impact on security subjects – individuals and groups that are the ultimate recipients of specific security policies, regardless of whether these have beneficial effects on them. Using Mark Duffield’s distinction between the insured Global North and the non-insured Global South, this paper discusses how drones generate a radical dissociation between the intervener and the intervened that ultimately produces new security environments at the margins of the international system. These new security environments are defined by the articulation between space, technologies and bodies: bodies of invisible subjects; bodies that are uninsurable. 相似文献
192.
This article seeks to reflect on the possibilities of cooperative R&D to constitute an opportunity for companies in developing countries to take part in the innovation concerning technological frontier. In order to show this thesis can be true, this article is based on the case study of Petrobrás, the Brazilian state-owned oil company, which has employed the resource of cooperative R&D to gain access to the new subsea boosting technology and to acquire a place in the vanguard of such technology. However, the catch-up occurs only when firms in developing countries actively take part in the innovation process and accomplish an efficient process of technological learning, which is reflected on the evolution of interactions with external partners. The experience of Petrobrás is analyzed emphasizing the technological learning process through the transformation in its agreements with external partners. We present three cases of subsea boosting technologies developed by Petrobrás together with a majority of foreign producers or institutes. The analysis of these experiences allows us to show that the learning process and the mastery of in-house processes were accompanied by a significant evolution in the agreements with external sources. Petrobrás passes on from the position of cosponsor to that of articulator of the innovation process in technological cooperation agreements. The article proposes an evolutionary sequence to analyze the company's learning process. The evolutionary trajectories are different in each case, but in all of them it was possible to prove the increasing commitment of Petrobrás to the innovation effort. 相似文献
193.
Materials in the field of Law & Literature are explored; in particular,the study of specific popular poetic forms found in the Andalusianfolklore of flamenco, such as prisiones songs (las tonás de carcelerasand coplas de presos). Various appropriate aspects of concern and interest of reformist doctrines and the Positivist school of criminallaw in 19th century Spain are related to criminal policy, the image ofthe penintenial system and criminal justice. Thus themes of legalethnology and legal criminal philosophy are connected. the author usesitems compiled by some krausists, who were influenced by evolutionarydoctrines, Darwinism and folklorist Positivism (Krausopositivism). Theseare characterised as ``Krausofloklorists', who, in turn, are sensibleto the crisis and necessary modernization of the States system ofsanctions and punishments. The article concludes by reflecting onproblems connected with identity and cultural and sociopoliticalethnicity of excluded and marginal groups. 相似文献
194.
Alexandre Ariel da Fonseca de Souza B.Sc. Cássio Thyone Almeida de Rosa B.Sc. Luciano Chaves Arantes M.Sc. José Roberto Pujol-Luz Ph.D. 《Journal of forensic sciences》2020,65(3):1012-1015
Ants are one of the first insects to find an exposed cadaver and can be present during all stages of decomposition. Although these organisms are not commonly used in postmortem interval estimates, they are to be taken into account on criminal investigations involving human corpses, since they can leave bite marks that can be mistaken for antemortem or perimortem injuries, which could be misleading when ascertaining the occurrence of abuse or physical altercation during a crime. A few studies report the action of ants on human cadavers and even though leaf-cutting ants of the genus Atta are frequently encountered in succession studies that use animal carcasses, there are no records of these fungus-growing species on human corpses. Atta is a genus restricted to the New World, ranging from northern Argentina to southern United States and acts as one of the most conspicuous neotropical herbivores. In this study, we report three cases of violent death that illustrate the impact of ants, especially those of the genus Atta, in a forensic setting. We compare the patterns displayed by postmortem bite injuries caused by leaf-cutter ants and other common species with less robust mandibles. We also present the capability of Atta ants to create artifacts by cutting victim’s clothes in a crime scene, contributing to the knowledge of ant-mediated confounding factors in crime scene investigation. 相似文献
195.
Colby E. Ott M.S. Kourtney A. Dalzell B.S. Pedro José Calderón-Arce M.S. Ana Lorena Alvarado-Gámez Ph.D. Tatiana Trejos Ph.D. Luis E. Arroyo Ph.D. 《Journal of forensic sciences》2020,65(6):1935-1944
The increasing demand for rapid methods to identify both inorganic and organic gunshot residues (IGSR and OGSR) makes electrochemical methods, an attractive screening tool to modernize current practice. Our research group has previously demonstrated that electrochemical screening of GSR samples delivers a simple, inexpensive, and sensitive analytical solution that is capable of detecting IGSR and OGSR in less than 10 min per sample. In this study, we expand our previous work by increasing the number of GSR markers and applying machine learning classifiers to the interpretation of a larger population data set. Utilizing bare screen-printed carbon electrodes, the detection and resolution of seven markers (IGSR; lead, antimony, and copper, and OGSR; nitroglycerin, 2,4-dinitrotoluene, diphenylamine, and ethyl centralite) was achieved with limits of detection (LODs) below 1 µg/mL. A large population data set was obtained from 395 authentic shooter samples and 350 background samples. Various statistical methods and machine learning algorithms, including critical thresholds (CT), naïve Bayes (NB), logistic regression (LR), and neural networks (NN), were utilized to calculate the performance and error rates. Neural networks proved to be the best predictor when assessing the dichotomous question of detection of GSR on the hands of shooter versus nonshooter groups. Accuracies for the studied population were 81.8 % (CT), 88.1% (NB), 94.7% (LR), and 95.4% (NN), respectively. The ability to detect both IGSR and OGSR simultaneously provides a selective testing platform for gunshot residues that can provide a powerful field-testing technique and assist with decisions in case management. 相似文献
196.
International non‐governmental organisations (INGOs) are prominent actors in the international arena, aiming to improve the life of disadvantaged people. However, INGOs often do not succeed in doing this. Consequently, INGO legitimacy is regularly questioned. Increased transparency and tightened accountability mechanisms are often‐mentioned solutions to this problem. Based on an analysis of four dimensions of INGO legitimacy—normative, regulatory, cognitive and output legitimacy—we argue that this is not necessarily adequate. We conclude that INGO mission statements create a normative source of legitimacy, but that this, in itself, is not enough to ground INGO legitimacy: it also needs to be institutionalised and organised. However, as a result of power relations and resulting pressures for accountability and transparency, as defined by their external stakeholders, INGOs experience a permanent struggle to reconcile their mission with the requirements for regulatory, cognitive and output legitimacy. The more these stakeholders press for increased organisation of INGO work, the more the pursuit of the core objectives of INGOs is obstructed. We illustrate this argument with the case of the post‐Tsunami humanitarian intervention (2004/2005). Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
197.
Marcus André Melo 《拉美政治与社会》2007,49(4):115-148
Current explanations of taxation levels have identified a host of factors, such as levels of economic development and GDP per capita, tax handles, tax morale, and political regimes. But none of them can account for Argentina's exceptionalism. Using a "transaction cost politics" approach and the case of Brazil for comparison, this article argues that the key to explaining low taxation in Argentina is political instability. Systemic instability affects the tax behavior of governments. Facing an uncertain future, incumbent governments choose to extract resources from society through inflation rather than normal taxation. This article argues that political institutions, particularly federalism, contribute to instability and thereby reduce the discount rates of government policymakers. 相似文献
198.
André Kaiser 《Politische Vierteljahresschrift》2007,48(1):119-135
Ohne Zusammenfassung 相似文献
199.
200.