期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于GP-DE的拱盖法车站位移-应力联合反分析研究
1
作者 冯开帅 姜谙男 于海 《公路工程》 2022年第1期55-62,共8页
在上软下硬的地质条件下采用拱盖法进行大跨度暗挖车站施工时,由于土岩复合和跨度较大的特点,使得车站的围岩参数难以准确获取。针对这一问题,提出了一种适用于拱盖法车站的智能反分析方法:高斯过程-差异进化协同优化算法(GP-DE算法)。... 在上软下硬的地质条件下采用拱盖法进行大跨度暗挖车站施工时,由于土岩复合和跨度较大的特点,使得车站的围岩参数难以准确获取。针对这一问题,提出了一种适用于拱盖法车站的智能反分析方法:高斯过程-差异进化协同优化算法(GP-DE算法)。以大连地铁五号线石葵路车站为工程背景,在车站典型断面处安装传感器,采集施工中应力位移数据;同时建立FLAC^(3D)有限元模型,设计25组正交方案进行计算,并得出结果,通过敏感性分析找出关键参数;联合传感器实测数据与正交方案所得监测数据,运用该算法进行位移应力联合反分析,并使用FLAC^(3D)正算验证反演参数的精度。结果表明,反分析所得参数代入有限元模型正算结果与实际值较为吻合,反分析结果精度高。将反演结果运用到车站设计中,反演精度满足工程需要。 展开更多
关键词 拱盖法 联合反分析 高斯过程 差异进化算法 正交设计
下载PDF
Crimean-Congo Hemorrhagic Fever: An Overview 被引量:1
2
作者 Serkan ncü 《Virologica Sinica》 SCIE CAS CSCD 2013年第4期193-201,共9页
Crimean-Congo hemorrhagic fever (CCHF) is a zoonotic viral infection that is a serious threat to humans. The disease is widely distributed in Africa, Asia, and Europe and has developed into a serious public health con... Crimean-Congo hemorrhagic fever (CCHF) is a zoonotic viral infection that is a serious threat to humans. The disease is widely distributed in Africa, Asia, and Europe and has developed into a serious public health concern. Humans become infected through the bites of ticks, by contact with a patient with CCHF, or by contact with blood or tissues from viremic livestock. Microvascular instability and impaired hemostasis are the hallmarks of the infection. Infection in human begins with nonspecific febrile symptoms, but may progress to a serious hemorrhagic syndrome with high mortality rates. Enzyme-linked immunoassay (ELISA) and polymerase chain reaction (PCR) are the most used and specific tests for the diagnosis. The mainstay of treatment is supportive. Although definitive studies are not available, ribavirin is suggested to be effective especially at the earlier phase of the infection. Uses of universal protective measures are the best way to avoid the infection. In this review, all aspects of CCHF are overviewed in light of the current literature. 展开更多
关键词 Crimean-Congo Hemorrhagic Fever EPIDEMIOLOGY TRANSMISSION PATHOGENESIS DIAGNOSIS Treatment PREVENTION
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部