多处理机系统的高效实时容错调度算法

在容错调度算法副版本后调度算法（ＢＫＣＬ）的基础上,提出一种高效实时容错调度算法（ＥＢＫＣＬ）．对于具有容错需求的实时任务而言,由实时容错调度算法所产生的调度可保证在多处理机实时系统中一个处理机失效时,实时任务仍然可在截止时限内完成．在ＥＢＫＣＬ算法中,如果两个实时任务的基版本分配在不同的处理机Ｐｉ和Ｐｊ上,且这两个实时任务的副版本被调度到同一个处理机Ｐ上,则两个副版本之间允许有时间上的重叠．模拟实验证明,使用多个实时任务副版本之间的时间重叠技术,ＥＢＫＣＬ大大提高了调度的性能     

高速数据采集及存储技术研究

介绍一种２５０ＭＳＰＳ数据采集存储卡及其与计算机接口电路的工作原理、设计思想,以及在雷达回波信号采集系统中的应用．系统采用了多路合成方案,以实现多路低速Ａ／Ｄ合成一路高速Ａ／Ｄ,从而减小了电路实现难度,提高了系统工作的可靠性．通过采用内存直接映射的接口方案,实现了采集扩展存储器在高速数据采集卡和计算机间的共享,从而完成高速采样数据向计算机的传输．最后从理论上对系统性能和调试结果进行了分析     

椭圆曲线公钥密码体制

简要介绍了椭圆曲线及其上有理点组成的Ａｂｅｌ群,讨论了椭圆曲线上的几个公钥密码体制,这些体制的安全性至少与有限域上相应体制的安全性是一样的,而实现的速度却更快。     

Genome-wide association study identifies susceptibility loci for dengue shock syndrome at MICB and PLCE1

Hypovolemic shock (dengue shock syndrome (DSS)) is the most common life-threatening complication of dengue. We conducted a genome-wide association study of 2,008 pediatric cases treated for DSS and 2,018 controls from Vietnam. Replication of the most significantly associated markers was carried out in an independent Vietnamese sample of 1,737 cases and 2,934 controls. SNPs at two loci showed genome-wide significant association with DSS. We identified a susceptibility locus at MICB (major histocompatibility complex (MHC) class I polypeptide-related sequence B), which was within the broad MHC region on chromosome 6 but outside the class I and class II HLA loci (rs3132468, P(meta) = 4.41 × 10(-11), per-allele odds ratio (OR) = 1.34 (95% confidence interval: 1.23-1.46)). We identified associated variants within PLCE1 (phospholipase C, epsilon 1) on chromosome 10 (rs3765524, P(meta) = 3.08 × 10(-10), per-allele OR = 0.80 (95% confidence interval: 0.75-0.86)). We identify two loci associated with susceptibility to DSS in people with dengue, suggesting possible mechanisms for this severe complication of dengue.     

Genome-wide association study identifies FCGR2A as a susceptibility locus for Kawasaki disease

Kawasaki disease is a systemic vasculitis of unknown etiology, with clinical observations suggesting a substantial genetic contribution to disease susceptibility. We conducted a genome-wide association study and replication analysis in 2,173 individuals with Kawasaki disease and 9,383 controls from five independent sample collections. Two loci exceeded the formal threshold for genome-wide significance. The first locus is a functional polymorphism in the IgG receptor gene FCGR2A (encoding an H131R substitution) (rs1801274; P = 7.35 × 10(-11), odds ratio (OR) = 1.32), with the A allele (coding for histadine) conferring elevated disease risk. The second locus is at 19q13, (P = 2.51 × 10(-9), OR = 1.42 for the rs2233152 SNP near MIA and RAB4B; P = 1.68 × 10(-12), OR = 1.52 for rs28493229 in ITPKC), which confirms previous findings(1). The involvement of the FCGR2A locus may have implications for understanding immune activation in Kawasaki disease pathogenesis and the mechanism of response to intravenous immunoglobulin, the only proven therapy for this disease.     

PVFS数据访问的负载平衡

分析了并行文件系统PVFS中存在负载不均衡的情况,提出了根据负载情况迁移数据或做热点的副本的负载平衡方法．描述了迁移过程中考虑到迁移代价,选取最优迁移方式．提出由执行I／O的10D节点统计负载情况并传输到元数据管理节点MGR,MGR节点实现迁移和制作副本,还要维护副本的一致性的策略．     

Collaborative City Digital Twin for the COVID-19 Pandemic:A Federated Learning Solution

The novel coronavirus,COVID-19,has caused a crisis that affects all segments of the population.As the knowledge and understanding of COVID-19 evolve,an appropri...     

第19届亚青赛中我国青年男子篮球技战术特点研究

通过对第19届亚青赛各场比赛进行现场观察、统计,对中国国青队技战术特点进行全面的研究和分析,并对比强队找出差距,给予客观、综合的评价,以期对我国篮球的发展提供科学、有益的参考．