全文获取类型
收费全文 | 559篇 |
免费 | 50篇 |
专业分类
各国政治 | 49篇 |
工人农民 | 16篇 |
世界政治 | 36篇 |
外交国际关系 | 47篇 |
法律 | 283篇 |
中国政治 | 5篇 |
政治理论 | 168篇 |
综合类 | 5篇 |
出版年
2023年 | 7篇 |
2022年 | 3篇 |
2021年 | 8篇 |
2020年 | 15篇 |
2019年 | 22篇 |
2018年 | 27篇 |
2017年 | 38篇 |
2016年 | 26篇 |
2015年 | 28篇 |
2014年 | 21篇 |
2013年 | 99篇 |
2012年 | 25篇 |
2011年 | 24篇 |
2010年 | 26篇 |
2009年 | 18篇 |
2008年 | 19篇 |
2007年 | 12篇 |
2006年 | 19篇 |
2005年 | 8篇 |
2004年 | 21篇 |
2003年 | 10篇 |
2002年 | 13篇 |
2001年 | 7篇 |
2000年 | 11篇 |
1999年 | 5篇 |
1998年 | 9篇 |
1997年 | 8篇 |
1996年 | 9篇 |
1995年 | 4篇 |
1994年 | 2篇 |
1993年 | 6篇 |
1992年 | 4篇 |
1991年 | 8篇 |
1990年 | 5篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 2篇 |
1985年 | 4篇 |
1984年 | 3篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1978年 | 3篇 |
1977年 | 3篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
排序方式: 共有609条查询结果,搜索用时 15 毫秒
71.
Alexander Nicholas Shaw 《中东研究》2016,52(3):505-524
This article challenges traditional accounts of the 1946 Cold War Crisis in Iran by moving beyond Soviet–American confrontation to focus on British policy. In contrast to the United States, Britain was a major stake-holding power in Iran due to the valuable holdings of the Anglo–Iranian Oil Company (AIOC). By comparing the reactions of the AIOC and Foreign Office, continuity between the events of the 1946 Crisis and later developments in the Mosaddegh premiership becomes apparent. Soviet interference in Azerbaijan prompted great concern from representatives in Iran, but the central Foreign Office pursued a more cautious policy. Only concerns relating to the growth of domestic Iranian communism in the form of the Tudeh Party and the threat this entailed to the British concession prompted the Foreign Office and AIOC to take measures rendering them partially complicit in the internationalization of Iranian politics, setting an important precedent for future action. This article evaluates the policy-making process and its impact on Anglo–Iranian relations by utilizing records from the UK National Archives, British Petroleum Archive and diplomatic personal papers. 相似文献
72.
Dane T. Plaza B.S. Jamia L. Mealy M.F.S. J. Nicholas Lane M.S.F.S. M. Neal Parsons M.S. Abigail S. Bathrick M.F.S. Donia P. Slack M.S. 《Journal of forensic sciences》2016,61(2):485-488
In forensic science, biological material is typically collected from evidence via wet/dry double swabbing with cotton swabs, which is effective but can visibly damage an item's surface. When an item's appearance must be maintained, dry swabbing and tape‐lifting may be employed as collection techniques that are visually nondestructive to substrates' surfaces. This study examined the efficacy of alternative swab matrices and adhesive lifters when collecting blood and fingerprints from glass, painted drywall, 100% cotton, and copy paper. Data were evaluated by determining the percent profile and quality score for each STR profile generated. Hydraflock® swabs, BVDA Gellifters®, and Scenesafe FAST? tape performed as well as or better than cotton swabs when collecting fingerprints from painted drywall and 100% cotton. Collection success was also dependent on the type of biological material sampled and the substrate on which it was deposited. These results demonstrated that alternative swabs and adhesive lifters can be effective for nondestructive DNA collection from various substrates. 相似文献
73.
Joseph T. Hefner Ph.D. Brian F. Spatola M.A. Nicholas V. Passalacqua Ph.D. Timothy P. Gocha Ph.D. 《Journal of forensic sciences》2016,61(6):1440-1449
Anatomical crania are occasionally encountered in forensic anthropology laboratories when that material is mistaken for forensically significant human remains. Using craniometric analyses and statistical measures of sample homogeneity, we determine whether anatomical material can be described as a single, homogenous group or as a diverse mix of populations. Twenty‐one interlandmark distances were collected from 85 anatomical preparations. Distance measures were calculated between all pairs using a pooled within‐sample variance/covariance matrix and then subjected to a Defrise‐Gussenhoven test between each paired distance to test whether each pair was drawn randomly from the same population. In the Defrise‐Gussenhoven analysis, twenty‐two percent (n = 66) of the 300 pairwise combinations were significant at the 0.05 level or below. The level of homogeneity suggests a majority of that material originated from the subcontinent of India or West Asia. Therefore, anatomical material can be viewed as a moderately homogenous group, but with a shared taphonomic history. 相似文献
74.
On 8 June 2000, the EU adopted the landmark 'electronic commerce' directive, a legal framework for the development of information society services. This article examines the rationale and evolution of EU policy for e-commerce and the key features of the directive. These include establishing the responsibilities of service and intermediary service providers, procedures for concluding on-line contracts and redress and enforcement mechanisms. It also explores the extent to which the directive clarifies the national law applicable to cross-frontier transactions and the relationship between the directive and private international law. The directive makes an important contribution to encouraging trust in the new technologies by establishing an EU-wide model for e-commerce, but it is by no means clear that it goes far enough. The continuing divergence of consumer protection policies and uncertainties about jurisdiction, securing redress, the liabilities of service providers and the status of contracts based upon web-site advertisements may continue to discourage the development of e-commerce in the Community. 相似文献
75.
Dennis Mueller has recently made a significant contribution tounderstanding issues of federalism and confederalism in theEuropean Union – from a particular public choice point of view. Hefurnishes an important and provocative discussion of therelationship between the decision-making rules embodied in aconstitutional convention (or other means of drafting a form ofunion for constituent states) and the decision-making rules whichwill be contained in the constitution which is the outcome of thatconvention. However, Mueller's veiled preference for a certainideal form of federalism for Europe tends to reduce the parametersof his discussion, and gives his article an unrealistic and narrowfocus, despite its ambitious scope. The present article exploressome of the latent complexities in the public choice analysis anddesign of European integration, particularly by drawing on thewider experience of working federations and theory of federalism,using the unique and synthesizing Australian experience as a pointof departure. It argues that Mueller's analysis is biased towardsthe reduction of decision-making costs of European governance, andthus undervalues the external costs that may be imposed throughexcessive central government. 相似文献
76.
An Analysis of the Characteristics of Thoracic and Abdominal Injuries Due to Gunshot Homicides in Israel 下载免费PDF全文
Nicholas R. Maiden Ph.D. Jehuda Hiss M.D. Hadas Gips M.D. Gil Hocherman M.Sc. Nadav Levin M.Sc. Olga Kosachevsky M.Sc. Asya Vinokurov M.Sc. Avraham Zelkowicz M.Pharm. Roger W. Byard M.D. 《Journal of forensic sciences》2016,61(1):87-92
De‐identified wound data from 197 homicidal gunshot postmortems were obtained between 2000 and 2008. Forensic ballistics data were only available for cases between 2004 and 2008. Males represent 91% of gunshot victims and were struck in the thorax/abdomen with an average of 2.3 bullets. The type of firearms involved were semi‐automatic pistols in the predominant caliber 9‐mm Luger and assault rifles in caliber 5.56 × 45 mm and caliber 7.62 × 39 mm Soviet, using full metal jacket bullets. The majority of shootings occurred at ranges of 1 m or greater. The most common bullet path was front to back in 66% of cases. Entry wounds occurred more often on the left side of the thorax, abdomen, and back. The most common critical organs/tissues to sustain bullet trauma in descending order were as follows: heart, lungs, liver, aorta, spleen, kidneys, and vena cava. Ribs were struck by most bullets that entered the thorax. 相似文献
77.
78.
79.
80.
Use of an Automated Nested Multiplex Respiratory Pathogen PCR Panel Postmortem in the Pediatric Forensic Setting 下载免费PDF全文
Tiffany Baker M.D. Ph.D. Cynthia Schandl M.D. Ph.D. Susan Erin Presnell M.D. James Madory D.O. Frederick S. Nolte Ph.D. Nicholas Batalis M.D. 《Journal of forensic sciences》2017,62(5):1223-1228
Respiratory pathogens have been detected in forensic investigations using multiple techniques; however, no study has examined the use of automated, nested, multiplex polymerase chain reaction (ANM‐PCR), commonly used in living patients, in the forensic setting. This retrospective study assessed the utility of ANM‐PCR in detecting respiratory pathogens in the pediatric forensic setting. Respiratory samples from 35 cases were tested for up to 20 respiratory pathogens. 51.4% of these cases yielded a positive ANM‐PCR result, 20% of which were considered the cause of or contributory to death. The most commonly detected pathogens were rhinovirus/enterovirus and respiratory syncytial virus, and these were the only pathogens determined to play a significant role in cause of death. The sampled sites and postmortem intervals tested did not affect the likelihood of a positive or negative test. ANM‐PCR panels are effective, affordable, and rapid ancillary tools in evaluating cause of death in the forensic pediatric population. 相似文献