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A Core Genome Multilocus Sequence Typing Scheme for Proteus mirabilis

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Biomedical and Environmental Sciences 2023年第4期36卷 343-352页

作者： CHEN Sheng lin KANG Yu Tong liANG Yi He QIU Xiao Tong li zhen jun School of Public Health Shanxi Medical UniversityTaiyuan 030001ShanxiChina State Key Laboratory for Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China

Objective A core genome multilocus sequence typing(cgMLST)scheme to genotype and identify potential risk clonal groups(CGs)in Proteus *** In this work,we propose a publicly available cgMLST scheme for *** using chew *** total 72 complete *** genomes,representing the diversity of this species,were used to set up a cgMLST scheme targeting 1,842 genes,635 unfinished(contig,chromosome,and scaffold)genomes were used for its *** We identified a total of 205 CGs from 695 *** strains with regional distribution *** these,159 unique CGs were distributed in 16 ***20 and CG3 carried large numbers of shared and unique antibiotic resistance *** virulence genes(papC,papD,papE,papF,papG,papH,papI,papJ,and papK)related to the P fimbrial operon that cause severe urinary tract infections were only found in *** CGs require attention due to potential *** This research innovatively performs high-resolution molecular typing of *** using whole-genome sequencing technology combined with a bioinformatics pipeline(chewBBACA).We found that the CGs of *** showed regional distribution *** expect that our research will contribute to the establishment of cgMLST for ***.

关键词： Proteus mirabilis CgMLST Genotyping Clonal evolution ChewBBACA

Molecular Typing of Brucella Suis Collected from 1960s to 2010s in China by MLVA and PFGE

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Biomedical and Environmental Sciences 2013年第6期26卷 504-508页

作者： li zhen jun CUI Bu Yun CHEN Hai CHEN Jing Diao ZHAO Hong Yan PIAO Dong Ri JIANG Hai ZHANG li TANG Xu KE Chang Wen YAO zhen TIAN Guo Zhong State Key Laboratory for Communicable Disease Prevention and Control National Institute for Communicable Disease Control and Prevention Hainan Provincial People's Hospital Guangdong Provincial Center for Disease Control and Prevention

Brucellosis is a bacterial anthropozoonosis usually caused by Brucella abortus, Brucella melitensis, Brucella suis and Brucella canis. Brucella suis, the causative agent of swine brucellosis, is classified into five biovars and preferentially infects different animal hostsIll. In China, brucellosis is a national notifiable communicable disease both in animals and in human. In 2009, 35 816 brucellosis cases were reported. The annual incidence was 2.7 per 100 000 population.

关键词： MLVA Molecular Typing of Brucella Suis Collected from 1960s to 2010s in China by MLVA and PFGE 2010

Epidemiological Characteristics of Notifiable Infectious Diseases among Foreign Cases in China,2004–2017

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Biomedical and Environmental Sciences 2020年第6期33卷 421-430页

作者： WU Yue li zhen jun YU Shi Cheng CHEN liang WANG Ji Chun QIN Yu SONG Yu Dan George F.GAO DONG Xiao Ping WANG li Ping ZHANG Qun HE Guang Xue Chinese Center for Disease Control and Prevention Beijing 102206China National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionState Key Laboratory of Infectious Disease Prevention and ControlCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesBeijing 102206China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Savald Medical School University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory for Infectious Disease Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases(Zhejiang University)National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China

Objective We aimed to assess the features of notifiable infectious diseases found commonly in foreign nationals in China between 2004 and 2017 to improve public health policy and responses for infectious *** We performed a descriptive study of notifiable infectious diseases among foreigners reported from 2004 to 2017 in China using data from the Chinese National Notifiable Infectious Disease Reporting System(NNIDRIS). Demographic, temporal-spatial distribution were described and *** A total of 67,939 cases of 33 different infectious diseases were reported among *** diseases were seen in 31 provinces of China and originated from 146 countries of the world. The infectious diseases with the highest incidence number were human immunodeficiency virus(HIV) of18,713 cases, hepatitis B(6,461 cases), hand, foot, and mouth disease(6,327 cases). Yunnan province had the highest number of notifiable infectious diseases in foreigners. There were different trends of the major infectious diseases among foreign cases seen in China and varied among *** This is the first description of the epidemiological characteristic of notifiable infectious diseases among foreigners in China from 2004 to 2017. These data can be used to better inform policymakers about national health priorities for future research and control strategies.

关键词： Foreign cases Notifiable infectious diseases Epidemiological characteristics

Characteristics and Time-Dependent Instability of Ga-Doped ZnO Thin Film Transistor Fabricated by Radio Frequency Magnetron Sputtering

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Chinese Physics Letters 2011年第12期28卷 297-299页

作者： HUANG Hai-Qin SUN Jian liU Feng-Juan ZHAO Jian-Wei HU Zuo-Fu li zhen-jun ZHANG Xi-Qing WANG Yong-Sheng Key Laboratory of Luminescence and Optical Information(Ministry of Education) Institute of Optoelectronic TechnologyBeijing Jiaotong UniversityBeijing 100044 Beijing BOE Optoelectronics Technology CO. LTDBeijing 100176

We report on the fabrication and electrical characteristics of Ga-doped ZnO thin film transistors(TFTs).Low Ga-doped(0.7wt%)ZnO thin films were deposited on SiO_(2)/p−Si substrates by rf magnetron *** GZO TFTs show a mobility of 1.76 cm2/V⋅s,an on/off ratio of 1.0×10^(6),and a threshold voltage of 35 *** time−dependent instability of the TFT is *** VTH shifts *** addition,the device shows a decrease of the on/off ratio,mainly due to the increase of the *** mechanisms of instability are discussed.

关键词： TFTs film instability

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移动云计算中的一种任务联合执行策略

计算机学报 2017年第2期40卷 364-377页

作者：柳兴李建彬杨震李振军中国联合网络通信有限公司湖南省分公司长沙410014 中南大学信息安全与大数据研究院长沙410083 北京邮电大学信息与通信工程学院北京100876 北京邮电大学计算机学院北京100876

针对移动用户将应用迁移至云端处理会引起大量的数据传输导致高能耗的问题,提出了一种任务联合执行策略(Task Collaborative Execution Policy,TCEP).首先,在云端和移动终端联合执行移动应用的前提下,将应用考虑为一系列的串行任务,根... 详细信息

针对移动用户将应用迁移至云端处理会引起大量的数据传输导致高能耗的问题,提出了一种任务联合执行策略(Task Collaborative Execution Policy,TCEP).首先,在云端和移动终端联合执行移动应用的前提下,将应用考虑为一系列的串行任务,根据任务的计算负荷、输入和输出数据量,把云端与移动终端联合移动应用的优化问题建模为最小化移动终端的能耗问题,并得出结论该优化问题属于NPC(Nondeterministic Polynomial Complete)问题.接着,按移动终端需向云端迁移任务的次数来划分迁移策略集,并利用串行任务仅能一个接一个地执行的特点,给出了一次迁移最优特性.然后,通过对比串行任务与染色体的相似点,采用遗传算法来处理文中优化问题,并在简单遗传算法(Simple Genetic Algorithm,SGA)的基础上,利用一次迁移最优特性来设计交叉操作和变异操作,以便进一步提高算法性能.最后,通过仿真验证了所提策略及算法的性能,仿真结果表明,改进后的遗传算法具有良好的收敛性能,能够保证新个体具有仅向云端迁移一次的特性,与现有方法相比,所提策略可有效地减少搜索最优解的运算时间,能在满足应用执行时间要求的同时最小化移动终端的能耗.

关键词：云计算移动互联网应用迁移能效遗传算法

Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai li zhen Ma Jin-Hua Gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

“一带一路”沿线国家基础设施领域中日竞合研究

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理论探讨 2020年第2期 103-108页

作者：李振军燕山大学经济管理学院河北秦皇岛066004

"一带一路"沿线国家目前对基础设施的需求量比较大,为我国对外基础设施投资提供了难得的机遇,日本是这一领域我国最主要的竞争对手,也是重要的合作伙伴。中日在对"一带一路"沿线进行基础设施投资方面各有优势和劣势,基于双方的优劣势比... 详细信息

"一带一路"沿线国家目前对基础设施的需求量比较大,为我国对外基础设施投资提供了难得的机遇,日本是这一领域我国最主要的竞争对手,也是重要的合作伙伴。中日在对"一带一路"沿线进行基础设施投资方面各有优势和劣势,基于双方的优劣势比较分析,我国可以通过以下路径改进中日竞合关系:发挥低成本优势,提高竞争和合作能力;增加对外基础设施投资的附加性收益;提高基础设施的国际化投资水平,培养高层次国际化人才;加强风险防范意识和风险管控能力;提高我国政府支持效率,加强中日政府合作。

关键词： “一带一路” 基础设施中日竞合优势

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面向移动云计算的VM动态调度算法

系统工程与电子技术 2015年第9期37卷 2176-2181页

作者：柳兴袁超伟杨震李振军北京邮电大学信息与通信工程学院北京100876 北京邮电大学计算机学院北京100876 湖南广播电视大学理工部湖南长沙410004

针对移动云计算中的虚拟机(virtual machine,VM)调度问题,考虑无线带宽限制对VM调度的影响,以云提供商的系统效益为目标函数,根据拍卖机制提出了一种带宽受限的VM动态调度(bandwidth-constrainted VM dynamic scheduling,BVMDS)算法。... 详细信息

针对移动云计算中的虚拟机(virtual machine,VM)调度问题,考虑无线带宽限制对VM调度的影响,以云提供商的系统效益为目标函数,根据拍卖机制提出了一种带宽受限的VM动态调度(bandwidth-constrainted VM dynamic scheduling,BVMDS)算法。该算法首先根据用户的出价来判定拍卖成功方,然后根据拍卖成功方对计算资源的需求来配置VM,最后采用临界支付的方式来计算拍卖成功方的实际支付价格。仿真结果表明,算法能够有效地改善云提供商的系统效益和资源利用率。

关键词：移动云计算虚拟机拍卖机制调度

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我国基础设施产业的放松规制问题研究

学术交流 2008年第6期 54-58页

作者：李振军燕山大学文法学院河北秦皇岛066004

自上个世纪80年代起,在基础设施产业放松政府规制已成为一个国际普遍趋势。导致政府放松基础设施产业市场准入规制的因素主要有财政困难、国外压力、政治斗争的需要、不利的宏观经济状况、意识形态以及改善产业绩效的需要等。但从我国... 详细信息

自上个世纪80年代起,在基础设施产业放松政府规制已成为一个国际普遍趋势。导致政府放松基础设施产业市场准入规制的因素主要有财政困难、国外压力、政治斗争的需要、不利的宏观经济状况、意识形态以及改善产业绩效的需要等。但从我国目前的状况来看,这些因素对政府放松基础设施产业准入规制的作用都不是很显著。

关键词：基础设施产业规制政府放松规制