全文获取类型
收费全文 | 723篇 |
免费 | 54篇 |
专业分类
各国政治 | 16篇 |
工人农民 | 13篇 |
世界政治 | 26篇 |
外交国际关系 | 50篇 |
法律 | 418篇 |
中国共产党 | 5篇 |
中国政治 | 58篇 |
政治理论 | 85篇 |
综合类 | 106篇 |
出版年
2024年 | 4篇 |
2023年 | 22篇 |
2022年 | 29篇 |
2021年 | 45篇 |
2020年 | 51篇 |
2019年 | 27篇 |
2018年 | 53篇 |
2017年 | 33篇 |
2016年 | 26篇 |
2015年 | 28篇 |
2014年 | 59篇 |
2013年 | 76篇 |
2012年 | 61篇 |
2011年 | 24篇 |
2010年 | 26篇 |
2009年 | 25篇 |
2008年 | 42篇 |
2007年 | 31篇 |
2006年 | 18篇 |
2005年 | 21篇 |
2004年 | 10篇 |
2003年 | 17篇 |
2002年 | 12篇 |
2001年 | 10篇 |
2000年 | 6篇 |
1999年 | 5篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1983年 | 3篇 |
排序方式: 共有777条查询结果,搜索用时 9 毫秒
121.
吴同 《贵州警官职业学院学报》2011,23(4):56-61
随着互联网技术的发展,电子产品被广泛应用在各个领域。与此同时,涉及到数字证据的犯罪案件日益增多。目前,侦查取证人员面临的巨大挑战是需要在短时间内在存有海量数据的大容量存储介质中进行搜查取证活动,传统的数字取证模型难以应对。 相似文献
122.
Andreini E Frison S Longhi E Torelli R De Fazio N Poli F 《Forensic science international》2007,168(1):e13-e16
Genotype and allele frequencies for STR loci D3S1358, vWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317, D7S820 were investigated in 289 unrelated Italian Caucasian individuals from the North and South regions. After co-amplification by polymerase chain reaction, automatic DNA profiling of these nine STR loci was performed by ABI PRISM((R)) 310 DNA Genetic Analyzer. For each locus, statistical parameters for forensic and paternity purposes were then calculated; the combined power of discrimination and the combined power of exclusion of all nine loci were 0.9999999999917 and 0.99992 for the Northern population and 0.9999999999921 and 0.99991 for the Southern population. 相似文献
123.
Marian C Anghel A Bel SM Ferencz BK Ursoniu S Dressler M Popescu O Budowle B 《Forensic science international》2007,170(1):73-75
Allele frequencies for the 15 tetranucleotide short tandem repeat loci contained in the AmpFlSTR Identifiler kit were obtained from a population sample of 219 unrelated individuals born in the western part of Romania. 相似文献
124.
Grzegorz Zadora Ph.D. Tereza Neocleous Ph.D. Colin Aitken Ph.D. 《Journal of forensic sciences》2010,55(2):371-384
Abstract: Likelihood ratios (LRs) provide a natural way of computing the value of evidence under competing propositions. We propose LR models for classification and comparison that extend the ideas of Aitken, Zadora, and Lucy and Aitken and Lucy to include consideration of zeros. Instead of substituting zeros by a small value, we view the presence of zeros as informative and model it using Bernoulli distributions. The proposed models are used for evaluation of forensic glass (comparison and classification problem) and paint data (comparison problem). Two hundred and sixty‐four glass samples were analyzed by scanning electron microscopy, coupled with an energy dispersive X‐ray spectrometer method and 36 acrylic topcoat paint samples by pyrolysis gas chromatography hyphened with mass spectrometer method. The proposed LR model gave very satisfactory results for the glass comparison problem and for most of the classification tasks for glass. Results of comparison of paints were also highly satisfactory, with only 3.0% false positive answers and 2.8% false negative answers. 相似文献
125.
Mobile customers are increasingly being tracked and profiled by behavioural advertisers to enhance delivery of personalized advertising. This type of profiling relies on automated processes that mine databases containing personally-identifying or anonymous consumer data, and it raises a host of significant concerns about privacy and data protection. This second article in a two part series on “Profiling the Mobile Customer” explores how to best protect consumers’ privacy and personal data through available mechanisms that include industry self-regulation, privacy-enhancing technologies and legislative reform.1 It discusses how well privacy and personal data concerns related to consumer profiling are addressed by two leading industry self-regulatory codes from the UK and the U.S. that aim to establish fair information practices for behavioural advertising by their member companies. It also discusses the current limitations of using technology to protect consumers from privacy abuses related to profiling. Concluding that industry self-regulation and available privacy-enhancing technologies will not be adequate to close important privacy gaps related to consumer profiling without legislative reform, it offers suggestions for EU and U.S. regulators about how to do this.2 相似文献
126.
Miguel Manuel Melo Mnica Carvalho Virgínia Lopes Maria Joo Anjos Armando Serra Duarte Nuno Vieira Jorge Sequeiros Francisco Corte-Real 《Forensic Science International: Genetics Supplement Series》2010,4(5):e153-e157
Angola is located in the African continent, in the area of southern Africa and has a population of approximately 14 million inhabitants. The Angola population has origin from Occidental and Southern Bantu people that came from the great lakes region, creating the most ever known African migration of our days.Allele frequencies for the 15 STRs loci in the AmpFlSTR Identifiler kit (D8S1179, D21S11, D7S820, CSF1PO, D3S1358, HUMTH01, D13S317, D16S539, D2S1338, D19S433, HUMVWA, TPOX, D18S51, D5S818, HUMFIBRA/FGA and including the segment of the X-Y homologous gene amelogenin) were studied for Angola population.The genotype frequency of the 15 STR loci showed no significant deviations from Hardy–Weinberg equilibrium expectations and great values for the combined power of discrimination and combined power of a priori exclusion validate the application of these markers in forensic genetics. Comparative analyses between Angola population data and other relevant population database from Africa, Europe and American are presented. 相似文献
127.
128.
129.
《国际相互影响》2012,38(3):227-247
In 1986 developers and users of quantitative data in international and comparative politics organized to maintain, extend, and develop major datasets and to provide a stronger basis for coordinating data‐related activities. National Science Foundation funding established for a three‐year period Data Development for International Research. Its first phase (DDIR‐I) focused on improving datasets on both national capabilities and international conflict; and generating renewed efforts to better the data collections on internation events and international political economy. DDIR‐I's work, now virtually complete, augmented the quantity and quality of this national data resource and set the stage for another NSF‐funded project on internation event data (DDIR‐II). A final report on DDIR‐II is forthcoming in summer 1994. 相似文献
130.
《国际相互影响》2012,38(4):462-481
Disaggregated approaches to conflict research have led to new insights into the patterns and processes of political violence in developing countries. This article uses the most comprehensive subnational political violence data (ACLED) to observe where and when violence against civilians occurs within civil wars. Several new conclusions are evident from an event-based analysis of civilian violence: retribution or collateral damage are poor explanations for attacks on the unarmed. Instead, civilians are targeted because they are accessible; rebel groups kill more civilians, often in an attempt to create new frontlines for conflict. However, governments are also responsible for high rates of civilian death, yet they often “contract” this violence out to militias. This analysis confirms that there are multiple violent groups within civil war spaces, and small opposition groups commit higher levels of violence against civilians in local spaces. The strength of a violent group compared to its competition shapes how much civilian violence it commits. The results suggest that theories that emphasize civilian support and retribution as a basis for violence against civilians have overlooked the importance of how multiple violent opposition groups compete within civil wars, and how civilians suffer as a result. 相似文献