全文获取类型
收费全文 | 10354篇 |
免费 | 340篇 |
专业分类
各国政治 | 676篇 |
工人农民 | 436篇 |
世界政治 | 810篇 |
外交国际关系 | 470篇 |
法律 | 5937篇 |
中国共产党 | 2篇 |
中国政治 | 154篇 |
政治理论 | 2110篇 |
综合类 | 99篇 |
出版年
2023年 | 60篇 |
2020年 | 158篇 |
2019年 | 191篇 |
2018年 | 252篇 |
2017年 | 276篇 |
2016年 | 296篇 |
2015年 | 234篇 |
2014年 | 261篇 |
2013年 | 1280篇 |
2012年 | 295篇 |
2011年 | 358篇 |
2010年 | 267篇 |
2009年 | 282篇 |
2008年 | 298篇 |
2007年 | 290篇 |
2006年 | 274篇 |
2005年 | 246篇 |
2004年 | 258篇 |
2003年 | 276篇 |
2002年 | 214篇 |
2001年 | 371篇 |
2000年 | 346篇 |
1999年 | 313篇 |
1998年 | 157篇 |
1997年 | 111篇 |
1996年 | 118篇 |
1995年 | 112篇 |
1994年 | 115篇 |
1993年 | 105篇 |
1992年 | 178篇 |
1991年 | 163篇 |
1990年 | 151篇 |
1989年 | 148篇 |
1988年 | 164篇 |
1987年 | 162篇 |
1986年 | 165篇 |
1985年 | 151篇 |
1984年 | 148篇 |
1983年 | 159篇 |
1982年 | 96篇 |
1981年 | 68篇 |
1980年 | 84篇 |
1979年 | 98篇 |
1978年 | 78篇 |
1977年 | 67篇 |
1976年 | 69篇 |
1975年 | 60篇 |
1972年 | 54篇 |
1971年 | 55篇 |
1969年 | 57篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
821.
Shane Darke Ph.D. Johan Duflou M.Med.Path. F.R.C.P.A. Michelle Torok B.Soc.Sc. 《Journal of forensic sciences》2009,54(2):490-494
Abstract: To determine the prevalence and circumstances of psychoactive substances amongst nonoverdose completed suicide, 1436 consecutive cases autopsied at the NSW Department of Forensic Medicine over the period 1/1/1997–12/31/2006 were analyzed. Substances were detected in 67.2% of cases, and illicit drugs in 20.1%. Alcohol was present in 40.6% of cases. Males were more likely to be positive for alcohol, cannabis, and psychostimulants, and females for pharmaceuticals. Illicits were associated with younger age. Alcohol was most prominent amongst toxicity cases, as were opioids, psychostimulants amongst gunshot cases, and pharmaceuticals amongst drownings. Cases in which drug and alcohol histories were noted were more likely to have a substance detected. Alcohol was more common where a suicide note was left and where relationship problems were involved. Pharmaceuticals were more common where a previous attempt was noted. Licit and illicit substances are strongly associated with suicide, even when the method does not involve drug overdose. 相似文献
822.
823.
824.
825.
826.
Recent developments in German corporate governance 总被引:1,自引:0,他引:1
Marc Goergen Miguel C. Manjon Luc Renneboog 《International Review of Law and Economics》2008,28(3):175-193
This paper provides an overview of the German corporate governance system. We review the governance role of large shareholders, creditors, the product market and the supervisory board. We also discuss the importance of mergers and acquisitions, the market in block trades, and the lack of a hostile takeover market. Given that Germany is often referred to as a bank-based economy, we pay particular attention to the role of the universal banks (Hausbanken). We show that the German system is characterised by a market for partial corporate control, large shareholders and bank/creditor monitoring, a two-tier (management and supervisory) board with co-determination between shareholders and employees on the supervisory board, a disciplinary product–market, and corporate governance regulation largely based on EU directives but with deep roots in the German codes and legal doctrine. Another important feature of the German system is its corporate governance efficiency criterion which is focused on the maximisation of stakeholder value rather than shareholder value. However, the German corporate governance system has experienced many important changes over the last decade. First, the relationship between ownership or control concentration and profitability has changed over time. Second, the pay-for-performance relation is influenced by large shareholder control: in firms with controlling blockholders and when a universal bank is simultaneously an equity- and debtholder, the pay-for-performance relation is lower than in widely held firms or blockholder-controlled firms. Third, since 1995 several major regulatory initiatives (including voluntary codes) have increased transparency and accountability. 相似文献
827.
James C. McDavid Annette E. Mueller 《Canadian public administration. Administration publique du Canada》2008,51(4):589-615
Abstract: The primary purpose of this article is to investigate the factors that predict the efficiency of residential recycling collection services in Canadian local governments. The findings are based on a survey of 128 residential recycling producers from all regions of Canada. One of the most significant findings is the lack of a relationship between private‐sector companies collecting recyclables and the overall efficiency of collection operations. The dominance of the private‐sector collection of recyclables (over seventy‐seven per cent of all producers were contracted companies) does not translate into greater efficiencies. The most important variables in the model are amenable to local control. They include tonnes collected per vehicle per year, requiring full bins, inclusion of composting operations in the overall recycling program, the number of different kinds of materials recycled, participation rate, and reliance on side‐loading collection vehicles. Among the direct predictors of unit costs, the key underlying factor is the productivity of residential recycling operations. Because recyclables are marketed, handling them takes time, reduces the weights that collection vehicles can carry, and generally reduces productivity. Even diligent efforts to improve productivity will not bring recycling costs down to the levels for residential solid‐waste collection. Sommaire: L'objectif principal du présent article est d'examiner les facteurs qui prévoient l'efficacité des services de collecte de produits recyclables résidentiels dans les municipalités canadiennes. Les résultats reposent sur un sondage réalisé auprès de 128 producteurs de collecte de produits recyclables résidentiels opérant dans toutes les régions du Canada. L'un des résultats les plus notoires est le manque de relations entre les sociétés du secteur privé qui récupèrent les produits recyclables et l'efficacité d'ensemble des opérations de collecte. La prédominance de la collecte de produits recyclables par le secteur privé (plus de soixante‐dix‐sept pour cent de tous les producteurs étaient des sociétés contractuelles) ne se traduit pas par une plus grande efficacité. Les variables les plus importantes du modèle peuvent faire l'objet d'un contrôle local. Elles comprennent les tonnes récupérées par véhicule par an, l'exigence de poubelles pleines, l'inclusion d'opérations de compostage au programme général de recyclage, le nombre de différentes sortes de matériaux recyclés, le taux de participation, et le recours à des camions de collecte à chargement latéral. Parmi les variables explicatives directes des coûts unitaires, le principal facteur sous‐jacent est la productivité des opérations de recyclage résidentiel. Comme les produits recyclables sont commercialisés, leur manutention prend du temps, réduit le poids que les camions de collecte peuvent transporter, et réduit d'une manière générale la productivité. Même des efforts diligents pour améliorer la productivité ne feront pas baisser les coûts du recyclage aux niveaux de ceux de la collecte des déchets solides résidentiels. 相似文献
828.
Fiona de Londras 《The Modern law review》2008,71(1):36-58
This article outlines the US Supreme Court's approach to the habeas corpus entitlements of suspected terrorists detained in Guantánamo Bay and argues for the extension of constitutional habeas corpus rights to them. The article considers two ways in which the Supreme Court might carry out this task: first, 'the territorial approach' (based on domestic legal principles of 'unincorporated territories' and principles of leasehold), and secondly, 'the extraterritorial approach' (based on international purposive approaches to the reach of human rights treaties exemplified by the European Court of Human Rights' Article 1 jurisprudence). For reasons of effectiveness of protection, the Article expresses a clear preference for the latter. The House of Lords decision in R (Al-Skeini) v Secretary of State for Defence (2007) is proposed as a template for such a development. Finally the article refutes arguments rejecting such a development based on the 'trade-off thesis' and perceptions of judicial competence. 相似文献
829.
C. Robino S. Inturri A. Piccinini C. Torre 《Forensic Science International: Genetics Supplement Series》2008,1(1):160-161
Typing of X-chromosomal short tandem repeat (STR) loci in a deficiency paternity case revealed a single Mendelian incompatibility between a female child and her putative grandmother, consisting of an opposite homozygosity at locus DXS8378. The presence of a null allele due to a primer binding site mutation on the child's paternally inherited X chromosome was confirmed by amplification with newly designed DXS8378 external primers. Sequencing analysis showed a point mutation (C > T transition at position 168, according to GenBank accession G08098) in the binding site of the original DXS8378 reverse primer. 相似文献
830.
C. Baeza C. Gamba M.S. Mesa 《Forensic Science International: Genetics Supplement Series》2008,1(1):176-178
Short Tandem Repeat polymorphisms have been widely studied in the world, since specific databases are required to produce correct estimates of forensic statistical parameters. In this regard, Y-chromosome STRs have been studied mainly in Europe but are relatively scarce for sub-Saharan populations, despite these populations are represented in most of the Western countries. The aim of this work is to detect groups of populations with the lowest genetic variability within the African context. This allows to establish the relative homogeneity of Y-STRs databases for forensic casework and eventually to provide a wider insight into the African genetic history. 相似文献