全文获取类型
收费全文 | 476篇 |
免费 | 30篇 |
专业分类
各国政治 | 16篇 |
工人农民 | 79篇 |
世界政治 | 44篇 |
外交国际关系 | 24篇 |
法律 | 224篇 |
中国政治 | 1篇 |
政治理论 | 117篇 |
综合类 | 1篇 |
出版年
2022年 | 2篇 |
2021年 | 4篇 |
2020年 | 9篇 |
2019年 | 22篇 |
2018年 | 17篇 |
2017年 | 25篇 |
2016年 | 23篇 |
2015年 | 13篇 |
2014年 | 20篇 |
2013年 | 90篇 |
2012年 | 18篇 |
2011年 | 20篇 |
2010年 | 19篇 |
2009年 | 10篇 |
2008年 | 13篇 |
2007年 | 9篇 |
2006年 | 15篇 |
2005年 | 22篇 |
2004年 | 15篇 |
2003年 | 21篇 |
2002年 | 17篇 |
2001年 | 5篇 |
2000年 | 5篇 |
1999年 | 12篇 |
1997年 | 7篇 |
1996年 | 8篇 |
1995年 | 4篇 |
1993年 | 4篇 |
1992年 | 2篇 |
1990年 | 2篇 |
1988年 | 2篇 |
1987年 | 6篇 |
1986年 | 4篇 |
1985年 | 4篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 1篇 |
1974年 | 2篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1969年 | 2篇 |
1968年 | 3篇 |
1967年 | 2篇 |
排序方式: 共有506条查询结果,搜索用时 0 毫秒
81.
Kavlick MF Lawrence HS Merritt RT Fisher C Isenberg A Robertson JM Budowle B 《Journal of forensic sciences》2011,56(6):1457-1463
Successful mitochondrial DNA (mtDNA) forensic analysis depends on sufficient quantity and quality of mtDNA. A real-time quantitative PCR assay was developed to assess such characteristics in a DNA sample, which utilizes a duplex, synthetic DNA to ensure optimal quality assurance and quality control. The assay's 105-base pair target sequence facilitates amplification of degraded DNA and is minimally homologous to nonhuman mtDNA. The primers and probe hybridize to a region that has relatively few sequence polymorphisms. The assay can also identify the presence of PCR inhibitors and thus indicate the need for sample repurification. The results show that the assay provides information down to 10 copies and provides a dynamic range spanning seven orders of magnitude. Additional experiments demonstrated that as few as 300 mtDNA copies resulted in successful hypervariable region amplification, information that permits sample conservation and optimized downstream PCR testing. The assay described is rapid, reliable, and robust. 相似文献
82.
Wakeling HC Mann RE Milner RJ 《International journal of offender therapy and comparative criminology》2011,55(8):1324-1337
Actuarial risk assessment instruments for sexual offenders are often used in high-stakes decision making and therefore should be subject to stringent reliability and validity testing. Furthermore, those involved in the risk assessment of sexual offenders should be aware of the factors that may affect the reliability of these instruments. The present study examined the interrater reliability of the Risk Matrix 2000/s between one field rater and one independent rater with a sample of more than 100 sexual offenders. The results indicated good interrater reliability of the tool, although reliability varies from item to item. A number of factors were identified that seem to reduce the reliability of scoring. The present findings are strengthened by examining interrater reliability of the tool in the usual practitioner context and by calculating a range of reliability statistics. Strategies are suggested to increase reliability in the use of actuarial tools in routine practice. 相似文献
83.
Helen Kemmitt Michael Dizon Wendy Pang Tom Gastrell Bianca Chouls 《Computer Law & Security Report》2011,27(2):191-195
This is the latest edition of Baker &; McKenzie’s column on developments in EU law relating to IP, IT and telecommunications. This article summarises recent developments that are considered important for practitioners, students and academics in a wide range of information technology, e-commerce, telecommunications and intellectual property areas. It cannot be exhaustive but intends to address the important points. This is a hard copy reference guide, but links to outside web sites are included where possible. No responsibility is assumed for the accuracy of information contained in these links. 相似文献
84.
85.
A range of protein stains were utilised for the enhancement of footwear impressions on a variety of fabric types of different colours with blood as a contaminant. A semi-automated stamping device was used to deliver test impressions at a set force to minimise the variability between impressions; multiple impressions were produced and enhanced by each reagent to determine the repeatability of the enhancement. Results indicated that while most protein stains used in this study successfully enhanced impressions in blood on light coloured fabrics, background staining caused interference on natural fabrics. Enhancement on dark coloured fabrics was only achieved using fluorescent protein stains, as non-fluorescent protein stains provided poor contrast.A further comparison was performed with commercially available protein staining solutions and solutions prepared within the laboratory from the appropriate chemicals. Both solutions performed equally well, though it is recommended to use freshly prepared solutions whenever possible. 相似文献
86.
87.
The first jurisdictions in the world to introduce legislation regulating donor conception were Victoria (Australia) and Sweden in the 1980s. Under the Infertility (Medical Procedures) Act 1984 (Vic), donor-conceived people (aged 18 years and over), their parents (if children were under 18 years) and donors gained the right to apply for identifying information about each other. Information can only be given with the consent of each party. To date, over 3,500 donor-conceived children have been born in Victoria since the 1984 Victorian legislation was introduced (and enacted in 1988). The first 106 donor-conceived children under this legislation turned 18 in 2006 and many of them may not know that they are donor-conceived. The Infertility Treatment Authority, Victoria, conducted a public education campaign to provide information and support to people affected by the legislation. The campaign and services associated with donor registers have had a significant initial impact. 相似文献
88.
Helen O’Nions 《Liverpool Law Review》2010,31(3):233-257
This paper explores the link between increasing incidents of hate crime and the asylum policy of successive British governments
with its central emphasis on deterrence. The constant problematisation of asylum seekers in the media and political discourse
ensures that ‘anti-immigrant’ prejudice becomes mainstreamed as a common-sense response. The victims are not only the asylum
seekers hoping for a better life but democratic society itself with its inherent values of pluralism and tolerance debased
and destabilised. 相似文献
89.
Helen Kemmitt Michael Dizon Karen Roberts Bianca Chouls 《Computer Law & Security Report》2010,26(6):655-658
This is the latest edition of Baker &; McKenzie's column on developments in EU law relating to IP, IT and telecommunications. This article summarises recent developments that are considered important for practitioners, students and academics in a wide range of information technology, e-commerce, telecommunications and intellectual property areas. It cannot be exhaustive but intends to address the important points. This is a hard copy reference guide, but links to outside web sites are included where possible. No responsibility is assumed for the accuracy of information contained in these links. 相似文献
90.
Kevin J. Farrugia Niamh NicDaid Kathleen A. Savage Helen Bandey 《Science & justice》2010,50(4):200-204
Most footwear marks made in blood on a surface such as fabric tend to be enhanced in situ rather than physically recovered using a lifting technique prior to enhancement. This work reports on the use of an alginate material to recover the impressed footwear marks made in blood and deposited on a range of fabric types and colours. The lifted marks were then enhanced using acid black 1 and leuco crystal violet with excellent results.This presents a new method for the lifting and recovery of blood impressions in situ from crime scene followed by subsequent mark enhancement of the lifted impression. 相似文献