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   1516篇
  免费   102篇
各国政治   130篇
工人农民   118篇
世界政治   159篇
外交国际关系   77篇
法律   792篇
中国共产党   1篇
中国政治   10篇
政治理论   324篇
综合类   7篇
  2024年   2篇
  2023年   20篇
  2022年   4篇
  2021年   23篇
  2020年   52篇
  2019年   59篇
  2018年   71篇
  2017年   87篇
  2016年   93篇
  2015年   56篇
  2014年   82篇
  2013年   282篇
  2012年   75篇
  2011年   75篇
  2010年   55篇
  2009年   45篇
  2008年   53篇
  2007年   63篇
  2006年   45篇
  2005年   54篇
  2004年   50篇
  2003年   57篇
  2002年   42篇
  2001年   20篇
  2000年   24篇
  1999年   9篇
  1998年   12篇
  1997年   11篇
  1996年   14篇
  1995年   15篇
  1994年   5篇
  1993年   8篇
  1992年   6篇
  1991年   6篇
  1990年   3篇
  1989年   4篇
  1988年   3篇
  1987年   6篇
  1986年   2篇
  1985年   2篇
  1984年   3篇
  1983年   5篇
  1981年   2篇
  1980年   2篇
  1978年   3篇
  1976年   1篇
  1975年   2篇
  1973年   2篇
  1970年   1篇
  1965年   1篇
排序方式: 共有1618条查询结果,搜索用时 31 毫秒
31.
This article reports a comparative study of the Environmental Regulatory Agencies in Norway, Denmark and Finland. Increasingly and relatively independently these agencies are taking part in transnational networks in the European Union involving the European Commission. An informal penetration, fuelled by faster electronic technology, is taking place between the European Commission and the regulatory agencies, largely outside the control of the domestic politico-administrative leadership. Changes in the character of the states' public administrations serve as an important background for these developments, a distinctive feature being the 'agencification' of the administrative apparatus during the last decades. Due to their relative autonomy, the national regulatory agencies are well placed to work 'double-hatted' in the sense that they interact directly with the European Commission at the same time as they perform traditional tasks as agents of national ministries. This development may challenge the image of integrated administrative apparatus and the notion of transparent and democratic governance.  相似文献   
32.
The environmental Kuznets curve (EKC) hypothesis conjectures a nonlinear relationship between pollution and economic growth, such that pollution per capita initially increases as countries economically develop, but then reaches a maximum point before ultimately declining. Much of the EKC literature has focused on testing this basic hypothesis and, in studies that find evidence of an EKC, estimating the “turning point” level of development at which the per capita pollution‐growth relationship changes sign. This approach has not emphasized the policy relevance of specification issues or the potential role of policy variables. This research explores a modified EKC specification which conditions the pollution‐growth relationship on a country's level of debt and degree of democratization. These variables turn out to be significant, implying that different political and economic contexts can shift EKCs and their turning points. These findings suggest that policies to relieve debt burdens and institute political reform, in addition to their usual justifications, also could be used as a strategy to reduce carbon emissions from developing countries. © 2008 by the Association for Public Policy Analysis and Management.  相似文献   
33.
34.
Examining the oil and gas industry in the Russian Arctic, this article investigates the gap between corporate social responsibility (CSR) as articulated in corporate offices and implemented at the local level. In Russia, global CSR norms interact with weak formal institutions and the strong informal expectations of state officials and local communities that companies bear responsibility for welfare and infrastructure. As a result, the concept of citizens as ‘stakeholders’ is underdeveloped. Instead, local residents remain subjects within a neo-paternalist system of governance that mimics some elements of the Soviet past. Compensation for damages to indigenous peoples has blurred legal obligations and the voluntary nature of CSR. However, the CSR in the region is constantly developing and formal methods of compensation may assist in clarifying the scope and practice of CSR.  相似文献   
35.
36.
37.
Intravascular lymphoma (IVL) is a rare subtype of extranodal lymphomas that is characterized by the selective growth of neoplastic cells within the lumen of small vessels. Authors document the case of an unexpected death caused by an undiagnosed intravascular large B-cell lymphoma with multi-organ involvement, which had initially manifested as an infection and then as an unclarified central nervous system pathology. Histological examination showed a diffuse intravascular large B-cell brain lymphoma with prominent cerebral involvement. The relevance of the case report reveals the importance of an autopsy of an extremely rare and threatening pathology that in most cases is diagnosed only postmortem. As a result, the role of the forensic pathologist becomes particularly important. When specifically performing an in-depth autopsy evaluation with a specific histologic analysis, it is possible to identify the intravascular lymphoma and declare a more accurate cause of death.  相似文献   
38.
Many studies in the literature have highlighted the utility of virtual 3D databanks as a substitute for real skeletal collections and the important application of radiological records in personal identification. However, none have investigated the accuracy of virtual material compared to skeletal remains in nonmetric variant analysis using 3D models. The present study investigates the accuracy of 20 computed tomography (CT) 3D reconstruction models compared to the real crania, focusing on the quality of the reproduction of the real crania and the possibility to detect 29 dental/cranial morphological variations in 3D images. An interobserver analysis was performed to evaluate trait identification, number, position, and shape. Results demonstrate a false bone loss in 3D models in some cranial regions, specifically the maxillary and occipital bones in 85% and 20% of the samples. Additional analyses revealed several difficulties in the detection of cranial nonmetric traits in 3D models, resulting in incorrect identification in circa 70% of the traits. In particular, pitfalls included the detection of erroneous position, error in presence/absence rates, in number, and in shape. The lowest percentages of correct evaluations were found in traits localized in the lateral side of the cranium and for the infraorbital suture, mastoid foramen, and crenulation. The present study highlights important pitfalls in CT scan when compared with the real crania for nonmetric analysis. This may have crucial consequences in cases where 3D databanks are used as a source of reference population data for nonmetric traits and pathologies and during bone-CT comparisons for identification purposes.  相似文献   
39.
International Journal for the Semiotics of Law - Revue internationale de Sémiotique juridique - In the original publication of the article, the paragraph beginning “We begin with two...  相似文献   
40.
Gunshot residue (GSR) analysis and their interpretation provide crucial information on a criminal investigation involving the use of firearms. To date, several approaches have been proposed for the implementation of a combined sampling and analysis of inorganic (IGSR) and organic GSR (OGSR). However, it is not clear at this stage if concurrent analyses of both types of residue might be detrimental to the analysis of IGSR currently applied in forensic laboratories. Thus, this work aims to compare and evaluate three different protocols for the combined collection and analysis of IGSR and OGSR. These methods, respectively, involve the use of a modified stub (with two halves, one for the detection of IGSR and the other for the analysis of OGSR); the sequential recovery of GSR with two stubs mounted with different adhesives (double-sided carbon tape and Tesa® TACK) and the sequential analysis of IGSR and OGSR from a single carbon stub following carbon deposition. The detection of IGSR was carried out using SEM-EDX, while OGSR analysis was performed using ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS). Obtained results for experiments performed using Geco Sinoxid® ammunition indicated that sequential analysis was the most suitable protocol for the combined collection and analysis of both IGSR and OGSR. A higher number of inorganic (characteristic and consistent) particles and higher concentrations of ethylcentralite, N-nitrosodiphenylamine, diphenylamine, and nitroglycerin were recovered with this method.  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