全文获取类型
收费全文 | 855篇 |
免费 | 9篇 |
专业分类
各国政治 | 12篇 |
工人农民 | 17篇 |
世界政治 | 10篇 |
外交国际关系 | 505篇 |
法律 | 228篇 |
中国政治 | 9篇 |
政治理论 | 77篇 |
综合类 | 6篇 |
出版年
2023年 | 1篇 |
2021年 | 2篇 |
2020年 | 3篇 |
2019年 | 2篇 |
2018年 | 9篇 |
2017年 | 6篇 |
2016年 | 9篇 |
2015年 | 5篇 |
2014年 | 43篇 |
2013年 | 77篇 |
2012年 | 62篇 |
2011年 | 98篇 |
2010年 | 61篇 |
2009年 | 75篇 |
2008年 | 69篇 |
2007年 | 53篇 |
2006年 | 40篇 |
2005年 | 43篇 |
2004年 | 56篇 |
2003年 | 51篇 |
2002年 | 43篇 |
2001年 | 1篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 4篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 3篇 |
1990年 | 4篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1969年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有864条查询结果,搜索用时 15 毫秒
31.
Andrew JointAuthor Vitae Edwin Baker Author Vitae 《Computer Law & Security Report》2011,27(4):407-415
This article builds on our previous introductory article to cloud computing ([2009] 25 CLSR 270-274) and seeks to explain how cloud computing has evolved. We then discuss how this evolution impacts on key contractual and legal considerations and how the treatment of these considerations might differ from their treatment in traditional IT supply agreements. 相似文献
32.
The adage that “it is always easier to fight the last war” is one that readily can be applied to the United States and its armed forces for not predicting the scale and type of operations encountered in the occupations of Iraq and Afghanistan. This article argues that the lack of preparation in the post-invasion phases arose from an institutional attachment to a preferred paradigm of warfare, as exemplified by the Persian Gulf War of 1991. This paradigm, though, has been substantially resurrected and re-configured to suit the fighting preferences of the American armed forces in its protracted encounters in Iraq and Afghanistan. Far from re-orienting its organization and mindset to meet the challenges of so-called counterinsurgency campaigns, as much current advocacy maintains, the military has reverted to the form of warfare it knows best. 相似文献
33.
This article explores the experiences of a small number of older women who work in university departments of education. The article starts with a brief review of some of the research that documents the experiences of women who work in departments of education. The article then considers the ways in which the older woman's body has become a focus for action, suppression and, above all, a site for constant work. Women are exhorted by the mass media to be vigilant in order to combat the embodied signs of passing time and to work on the project of the (ageing) body. The article then explores some of the ways that older women in education departments may be positioned/position themselves in relation to these pressures and some of the ways in which they disrupt these discourses. 相似文献
34.
35.
Judicial decisions are one element in the erosion of local government budgetary discretion. For example, litigation concerning constitutional rights forces local government officials to allocate resources toward the rights-based population. While rights-based allocation decisions may narrow the budgetary discretion of public officials, some managers may, paradoxically, be "better-off"—defined as the ability to protect and defend their budgets — when discretion is reduced. This thesis is tested through a case study of jail overcrowding litigation in a county government. 相似文献
36.
Lotteries, the state fiscal gimmick of the eighties, operate in jurisdictions encompassing substantially more than half the nation's population and enjoy considerable public acceptance. The revenue they generate is small, rarely more than two percent of state general revenue, it is subject to major year-to-year swings, and it is very expensive to generate, particularly when vendor commissions are recognized as part of cost. Furthermore, lotteries bear a high implicit excise tax rate and, because of the pattern of play across income classes, appears to worsen the overall equity of the revenue system. Their economic impact appears to be that of an internal transfer, although states with major lottery equipment suppliers have most to gain, particularly if they do not operate their own lottery. Lotteries are not destined to become mainstays of government finance, although their spread is likely, even with the fiscal questions they raise. 相似文献
37.
A 2-month-old infant girl died suddenly as a result of torsion of the uterine adnexa. The infant was found unresponsive in bed and was pronounced dead shortly after her arrival at a hospital. There were no antecedent signs of illness. At autopsy, the right ovary and right fallopian tube were twisted and were dark purple, swollen, and necrotic. The right ovary was enlarged by a follicle cyst 4 cm in diameter, which likely precipitated the torsion. The mechanism of death was unclear but may have resulted from the release of cytokines produced in response to necrotic adnexal tissue. Fatal uterine adnexal torsion has been reported rarely in infants; in all those cases there were antecedent symptoms. Torsion of the uterine adnexa should be included in the differential diagnosis of sudden death in infancy. 相似文献
38.
39.
Johnson RD Lewis RJ Canfield DV Dubowski KM Blank CL 《Journal of forensic sciences》2005,50(3):670-675
Specimens from fatal aviation accident victims are submitted to the FAA Civil Aerospace Medical Institute for toxicological analysis. During toxicological evaluations, ethanol analysis is performed on all cases. Care must be taken when interpreting a positive ethanol result due to the potential for postmortem ethanol formation. Several indicators of postmortem ethanol formation exist; however, none are completely reliable. The consumption of ethanol has been shown to alter the concentration of two major serotonin metabolites, 5-hydroxytryptophol (5-HTOL) and 5-hydroxyindole-3-acetic acid (5-HIAA). While the 5-HTOL/5-HIAA ratio is normally very low, previous studies using living subjects have demonstrated that the urinary 5-HTOL/5-HIAA ratio is significantly elevated for 11-19 h after acute ethanol ingestion. Recently, our laboratory developed and validated an analytical method for the simultaneous determination of both 5-HTOL and 5-HIAA in forensic urine samples using a simple liquid/liquid extraction and LC/MS/MS and LC/MS/MS/MS. In this previous work a 15 pmol/nmol serotonin metabolite ratio cutoff was established in postmortem urine, below which it could be conclusively determined that no recent antemortem ethanol consumption had occurred. In the current study this newly validated analytical method was applied to five ethanol-positive aviation fatalities where the origin of the ethanol present could not previously be conclusively determined. In four of the five cases examined the detected ethanol was demonstrated to be present due to postmortem microbial formation, and not consumption, even though some indication of ethanol consumption may have been present. 相似文献
40.
Balogh MK Burger J Bender K Schneider PM Alt KW 《Forensic science international》2003,137(2-3):188-195
A systematic study was conducted to investigate whether DNA can be successfully extracted from latent fingerprints deposited on ordinary paper and analysed using short tandem repeat profiling and mitochondrial DNA sequencing. In order to evaluate the performance of latent fingerprint analysis in a criminal case, experiments with varying conditions were carried out to improve our understanding of low copy number (LCN) DNA typing. After optimising the extraction methods to achieve increased sensitivity, the examination of touched paper can routinely yield the STR profile of the individual who has touched it. A fingerprint can therefore be considered as a potential source of DNA for genetic identification. Nevertheless, the findings of our "after enhancement experiment" (using chemically or physically pre-treated fingerprints), and our "mixture experiment" (using fingerprints from three to four people on the same sheet of paper) help to define the limitations of the low copy number PCR technique in forensic casework. 相似文献