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Optimal index shooting policy for layered missile defense system

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Journal of Systems Engineering and Electronics 2020年第1期31卷 118-129页

作者： LI Longyue FAN Chengli XING Qinghua XU Hailong zhao huizhen Air and Missile Defense College Air Force Engineering University

In order to cope with the increasing threat of the ballistic missile(BM)in a shorter reaction time,the shooting policy of the layered defense system needs to be *** main decisionmaking problem of shooting optimization is how to choose the next BM which needs to be shot according to the previous engagements and results,thus maximizing the expected return of BMs killed or minimizing the cost of BMs *** by this,this study aims to determine an optimal shooting policy for a two-layer missile defense(TLMD)*** paper considers a scenario in which the TLMD system wishes to shoot at a collection of BMs one at a time,and to maximize the return obtained from BMs killed before the system *** provide a policy analysis tool,this paper develops a general model for shooting decision-making,the shooting engagements can be described as a discounted reward Markov decision *** index shooting policy is a strategy that can effectively balance the shooting returns and the risk that the defense mission fails,and the goal is to maximize the return obtained from BMs killed before the system *** numerical results show that the index policy is better than a range of competitors,especially the mean returns and the mean killing BM number.

关键词： Gittins index shooting policy layered missile defense multi-armed bandits problem Markov decision process

Rhubarb ameliorates cognitive dysfunction in a rat model of Alzheimer’s disease through regulation of the intestinal microbiome

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Journal of Traditional Chinese Medical Sciences 2019年第3期6卷 234-243页

作者： huizhen zhao Demin Gao Xiaoyan Gao School of Chinese Materia Medica Beijing University of Chinese MedicineBeijing102488China

Objective:To determine the mechanism whereby rhubarb(Rheum tanguticum *** BALF.)may ameliorate cognitive dysfunction through regulation of the intestinal ***:We used a rat model of human microbiome-associated(HMA)-AD to characterize the therapeutic effect of rhubarb on cognitive dysfunction by assessing learning and spatial memory,tissue pathology,and neurotransmitter expression in brain ***,16S rRNA gene sequencing was used to analyze the intestinal microbial composition of the rats before and after rhubarb intervention,to determine whether changes in the intestinal microbiome might underpin the beneficial effect of rhubarb on cognitive ***:Morris water maze experiments showed that the learning and spatial memory of HMAAD rats were improved after rhubarb *** of brain sections showed that rhubarb had a protective effect on neurons in the brain tissue of HMA-AD *** tissue neurotransmitter analysis showed that rhubarb significantly reduces the 5-hydorxytryptamine concentration in the hippocampus of HMA-AD rats(P Z.0013).Furthermore,rhubarb affected the abundance of the Lachnospiraceae_NK4A136_group and Lactobacillus in the large ***:This study suggests that rhubarb ameliorates cognitive dysfunction in rats with HMA-AD by regulating the abundance of beneficial bacteria,which likely affects the concentration of 5-hydorxytryptamine in the hippocampus.

关键词： Rhubarb Intestinal microbiome Alzheimer’s disease Cognitive function 5-hydroxytryptamine

Integration of Big Data with International Graduate Ideological and Political Education

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Journal of Contemporary Educational Research 2022年第1期6卷 34-39页

作者： Mengzhen Li Yu Deng Xiaodong Wang huizhen zhao School of Foreign Languages Central South UniversityChangsha 410083Hunan ProvinceChina

Nowadays,colleges and universities have a large amount of information about political thought and education in addition to complex student *** big data,it has the characteristics of large capacity,high speed,and *** ideological and political education in colleges and universities urgently needs scientific decision-making and the ability to predict possible problems ahead of *** also perfectly matches the technical advantages of big data technology that can efficiently process data,analyze and extract information,as well as propose *** traditional higher education model can no longer meet the needs of current international higher *** the new background,universities must explore a new model of postgraduate international education,which is practical,multi-channel,and comprehensive,on a deeper *** to data on graduate students’interest,psychology,and behavior,higher education teachers can purposefully innovate the methods and approaches to higher *** integration of international graduate education with big data has been examined in this research,and a series of cultural exchanges has been carried out for foreign students at Central South *** kind of introduction seems to have effectively boosted the attractiveness of ideological and political education,improved the research level of international graduate students,and deepened the role of campus cultural activities in educating people on a deeper level.

关键词： Big data Ideological and political education Campus cultural activities

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中美大学生阅读倾向比较研究

图书馆 2009年第6期 32-34页

作者：赵慧真泉州师范学院图书馆福建泉州362000

本文通过对中美大学生阅读倾向进行比较,从社会文化、教育制度、教学方式、学生信息素养、图书馆资源建设等方面进行分析,论述了我国大学生在阅读上存在着盲目性、消遣性、平庸化等不良倾向。在此基础上,提出几点相应的提高学生阅读兴... 详细信息

本文通过对中美大学生阅读倾向进行比较,从社会文化、教育制度、教学方式、学生信息素养、图书馆资源建设等方面进行分析,论述了我国大学生在阅读上存在着盲目性、消遣性、平庸化等不良倾向。在此基础上,提出几点相应的提高学生阅读兴趣、扩大学生阅读范围、增强学生信息意识,提高学生信息能力的建议。

关键词：中美大学生阅读倾向信息素养

后疫情时期“云馆配”模式的多维比较与优化研究

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图书馆工作与研究 2020年第12期 77-84+104页

作者：赵慧真泉州师范学院图书馆

从资源发现、采选功能、后台管理3个方面对五大"云馆配"平台进行比较分析。指出"云馆配"虽具有现采会所不具备的优势,但也存在诸多问题。提出对现有图书采访云平台的优化策略,即统一平台,完备功能;平台无缝对接,数据交互通畅;完善书目信... 详细信息

从资源发现、采选功能、后台管理3个方面对五大"云馆配"平台进行比较分析。指出"云馆配"虽具有现采会所不具备的优势,但也存在诸多问题。提出对现有图书采访云平台的优化策略,即统一平台,完备功能;平台无缝对接,数据交互通畅;完善书目信息,助力精准采选;强化书目筛选功能,提高采选效率;提高智能程度,优化精准推送服务;提升读者参与度,满足个性化需求。

关键词：后疫情时期云馆配现采会图书采访云平台

Modeling and Solving of the Missile Pursuit-Evasion Game Problem

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Modeling and Solving of the Missile Pursuit-Evasion Game Pro...