全文获取类型
收费全文 | 126篇 |
免费 | 5篇 |
专业分类
各国政治 | 10篇 |
工人农民 | 19篇 |
世界政治 | 14篇 |
外交国际关系 | 3篇 |
法律 | 67篇 |
政治理论 | 18篇 |
出版年
2022年 | 1篇 |
2021年 | 2篇 |
2020年 | 1篇 |
2019年 | 6篇 |
2018年 | 2篇 |
2017年 | 6篇 |
2016年 | 9篇 |
2015年 | 4篇 |
2014年 | 6篇 |
2013年 | 19篇 |
2012年 | 4篇 |
2011年 | 8篇 |
2010年 | 6篇 |
2009年 | 7篇 |
2008年 | 3篇 |
2007年 | 7篇 |
2006年 | 5篇 |
2005年 | 3篇 |
2004年 | 4篇 |
2003年 | 3篇 |
2002年 | 3篇 |
2001年 | 2篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1991年 | 2篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1978年 | 1篇 |
1974年 | 1篇 |
排序方式: 共有131条查询结果,搜索用时 0 毫秒
81.
Big Data is shorthand for the currently rapidly evolving techniques of gathering and analysing for competitive advantage vast unstructured and structured sets of digital data. Big Data is currently at an early stage of development, but many organisations will be embarking on Big Data projects in the next couple of years in order to be in a position to know more about their customers than their competitors. Central to the success of these projects will be four critical factors: (i) understanding the legal framework for Big Data and how it applies to the organisation concerned; (ii) effectively bringing together the organisation's IT and legal functions in the Big Data project; (iii) a clear understanding of the organisation's objectives for its Big Data operations; and (iv) a structured approach to the strategy, policy and process aspects of Big Data governance. 相似文献
82.
83.
84.
Misa Winters M.S. Cara Monroe Ph.D. Jodi Lynn Barta Ph.D. Brian M. Kemp Ph.D. 《Journal of forensic sciences》2019,64(4):1145-1151
In this study, we sought to document the efficiency of primer extension capture (PEC) as a method to enrich DNA eluates of targeted DNA molecules and remove nontarget molecules from pools containing both. Efficiency of the method was estimated by comparing number of “copies in” to “copies out” by quantitative polymerase chain reaction. PEC retention of DNA targets ranging 109‐288 base pairs (bps) in length was 15.88–2.14% (i.e., loss of 84.12–97.86% of target molecules). Experimental modifications of the PEC method resulted in no significant improvements. However, the benefit of PEC was revealed in its ability to remove most nontarget DNA molecules (99.99%). We also discovered that many (56.69%) of the target molecules are “lost” prior to their immobilization on the streptavidin‐coated beads. These estimates of methodological efficiency are directly comparable to previous ones observed following “fishing” for DNA, an alternative method for DNA enrichment. 相似文献
85.
86.
87.
Abstract We compare the current U.S. housing voucher program with the British housing benefit and the Dutch housing allowance programs. After presenting the theory behind income‐related housing support, which underpins both the U.S. and European systems, we compare the three programs with respect to their scope (the budgeted versus the entitlement approach), the relationship between housing support and rent levels, the poverty trap, moral hazards, and administrative problems. The United States can learn from Great Britain and the Netherlands that a full entitlement program can best promote equity, but given the present political and economic climate, it is unlikely that Congress will adopt such a program anytime soon. Great Britain and the Netherlands can learn from the United States how to design a more efficient tenant subsidy program, one that provides incentives to find less expensive units and promotes family self‐sufficiency through enhanced job‐seeking behavior. 相似文献
88.
Pavelites JJ Kemp WL Barnard JJ Prahlow JA 《The American journal of forensic medicine and pathology》2011,32(4):387-392
The authors present a series of 6 deaths due to the uncommon cause of chemical burns. Of the 6 deaths due to chemical burns, 4 deaths were due to ingestion of a chemical, 1 death was caused by chemical burns of the skin, and 1 death resulted from rectal insufflation of a chemical. Seven additional cases where chemical burns may have been a contributing factor to the death or an incidental finding are also presented. Four cases are related to an incident involving chemical exposure during an industrial explosion. Three cases involve motor fuel burns of the skin. Two cases concern a plane crash incident, and 1 case involved a vehicular collision. Cases are derived from the records of the Dallas County Medical Examiner's Office and those of the authors' consultation practices. Each of the cases is presented, followed by a discussion of the various mechanisms of chemical injury. 相似文献
89.
Paneto GG Martins JA Longo LV Pereira GA Freschi A Alvarenga VL Chen B Oliveira RN Hirata MH Cicarelli RM 《Forensic science international》2007,173(2-3):117-121
The analysis of mitochondrial DNA (mtDNA) is a useful tool in forensic cases when sample contents too little or degraded nuclear DNA to genotype by autosomal short tandem repeat (STR) loci, but it is especially useful when the only forensic evidence is a hair shaft. Several authors have related differences in mtDNA from different tissues within the same individual, with high frequency of heteroplasmic variants in hair, as also in some other tissues. Is still a matter of debate how the differences influence the interpretation forensic protocols. One difference between two samples supposed to be originated from the same individual are related to an inconclusive result, but depending on the tissue and the position of the difference it should have a different interpretation, based on mutation-rate heterogeneity of mtDNA. In order to investigate it differences in the mtDNA control region from hair shafts and blood in our population, sequences from the hypervariable regions 1 and 2 (HV1 and HV2) from 100 Brazilian unrelated individuals were compared. The frequency of point heteroplasmy observed in hair was 10.5% by sequencing. Our study confirms the results related by other authors that concluded that small differences within tissues should be interpreted with caution especially when analyzing hair samples. 相似文献
90.
Richard Kemp 《Computer Law & Security Report》2018,34(4):928-932
Enterprise (large organisation) computing workloads are moving from ‘on-prem’ to ‘in-cloud’ increasingly quickly, and the cloud is forecast to account for almost half of enterprise IT by 2026, up from 10% today. But the benefits of the enterprise cloud need to be weighed against increasingly burdensome duties around cloud and data security. This comment piece provides a checklist of the sources of enterprise cloud security duties and a checklist of best practices to manage them. 相似文献