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Group consensus of multi-agent systems with additive noises

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Science China(Information Sciences) 2022年第10期65卷 242-255页

作者： chuanjian li Xiaofeng ZONG School of Automation China University of Geosciences Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education

This paper is concerned with group consensus of multi-agent systems(MASs) that consist of two groups in additive noise environments. First, a control protocol is proposed based on the state information of each agent’s neighbors corrupted by additive noises. Second, some sufficient conditions and necessary conditions are obtained for the following two types of group consensus behaviors.(1) Pure group consensus:agents in both groups have the same behavior(weak consensus or strong consensus);(2) hybrid group consensus: agents in different groups achieve different consensus behaviors. It is revealed that the influence between the two groups should be attenuated such that the MASs can achieve group consensus in additive noise environments, i.e., the affected group must fight against the influence that comes from another group.Finally, some simulation examples are given to illustrate the feasibility of the theoretical results.

关键词： group consensus multi-agent systems additive noises pure group consensus hybrid group consensus

CDISC银屑病治疗领域标准及其在银屑病临床试验中的应用

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中国皮肤性病学杂志 2024年第1期38卷 21-25页

作者：禤美玲李庚卢传坚温泽淮广州中医药大学第二附属医院临床研究方法学重点研究室广东广州510120 广州中医药大学第二附属医院省部共建中医湿证国家重点实验室广东广州510120 广东省中医皮肤临床医学研究中心广东广州510120 广州中医药大学科技创新中心广东广州510405

银屑病是一种免疫介导的慢性复发性皮肤病,典型临床表现是鳞屑性红斑或斑块。银屑病的治疗包括外用治疗、系统治疗、靶向生物制剂等,随着银屑病治疗药物及方法不断发展、更新,新的治疗方法需要足够的临床证据才能被推荐应用。为了促进... 详细信息

银屑病是一种免疫介导的慢性复发性皮肤病,典型临床表现是鳞屑性红斑或斑块。银屑病的治疗包括外用治疗、系统治疗、靶向生物制剂等,随着银屑病治疗药物及方法不断发展、更新,新的治疗方法需要足够的临床证据才能被推荐应用。为了促进银屑病临床研究的数据采集、管理与分析,规范专业词语语义的理解,便于全球药物注册的数据递交,临床数据交换标准协会(CDISC)开发了银屑病治疗领域标准及其用户指南(TAUG-Psor),目的是描述如何使用CDISC标准来呈现与银屑病靶向治疗领域有关的临床数据。本文介绍CDISC银屑病治疗领域的用户指南1.0(TAUG Psor 1.0)及其在银屑病临床研究中的应用,以帮助皮肤科医生、研究人员在临床研究设计中更好理解和使用银屑病治疗领域标准,以期促进其在国内新药研发或学术界中的相关药物临床试验的应用。

关键词：银屑病临床数据交换标准协会数据标准化临床研究

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非对称电阻场板场效应器件击穿特性仿真分析

微电子学 2024年第2期54卷 293-297页

作者：姚传建肖添李孝权何悦谭开洲中国电子科技集团公司第二十四研究所集成电路与微系统全国重点实验室

利用TCAD仿真研究一种二维紧耦合电阻场板电流调制原理下的物理模型与最优化结构。通过优化关键工艺与材料参数，改善器件漂移区尖峰电场，最终在相同漂移区掺杂下击穿电压较一维PN结理论击穿电压提升273%,相同归一化击穿电压10%变化范... 详细信息

利用TCAD仿真研究一种二维紧耦合电阻场板电流调制原理下的物理模型与最优化结构。通过优化关键工艺与材料参数，改善器件漂移区尖峰电场，最终在相同漂移区掺杂下击穿电压较一维PN结理论击穿电压提升273%,相同归一化击穿电压10%变化范围下，漂移区电荷变化允许冗余范围比现有传统PN超结拓宽15倍。相较于对称电阻场板场效应器件，在现有工艺下非对称优化电阻场板场效应器件能够更好的实现结构小型化与高密度的设计。

关键词：二维紧耦合电阻场板击穿电压 TCAD

基于BP神经网络的桥梁施工线形相机测量标定

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河北工程大学学报（自然科学版） 2024年第3期41卷 74-79页

作者：雷笑李婷徐杰陆泓霖许川建河海大学土木与交通学院江苏南京210098

机器视觉位移测量技术为大跨桥梁线形控制提供新解,而确保高精度的二维到三维坐标转换至关重要。对此,提出一种基于改进遗传算法BP神经网络的提升双目相机标定精度的方法,通过改进传统神经网络中的交叉及变异概率函数,提高标定效率及准... 详细信息

机器视觉位移测量技术为大跨桥梁线形控制提供新解,而确保高精度的二维到三维坐标转换至关重要。对此,提出一种基于改进遗传算法BP神经网络的提升双目相机标定精度的方法,通过改进传统神经网络中的交叉及变异概率函数,提高标定效率及准确性。经相应试验算例验证,采取传统张氏标定法测量坐标的均方差误差为4.67 mm,应用该方法标定后测量坐标的均方差误差为0.82 mm,标定精度提高,能够满足桥梁施工线形的监控要求。

关键词：双目视觉 BP神经网络桥梁工程数字图像识别

基于IGWO-BP神经网络锂电池SOC估算

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湖北工业大学学报 2024年第1期39卷 46-51页

作者：陈梦宇张杰周传建湖北工业大学太阳能高效利用及储能运行控制湖北省重点实验室湖北武汉430068 珠海东帆科技有限公司广东珠海519000

针对传统BP神经网络估算电池SOC过程中,存在初始权值和阈值对预测精度影响较大的问题,引入Tent混沌映射和自适应收敛因子对灰狼算法(GWO)进行改进,改善灰狼算法易陷入局部最优、后期迭代效率不高的缺点。将改进灰狼算法(improved grey W... 详细信息

针对传统BP神经网络估算电池SOC过程中,存在初始权值和阈值对预测精度影响较大的问题,引入Tent混沌映射和自适应收敛因子对灰狼算法(GWO)进行改进,改善灰狼算法易陷入局部最优、后期迭代效率不高的缺点。将改进灰狼算法(improved grey Wolf algorithm,IGWO)与BP神经网络模型结合,得到BP神经网络最优初始权值和阈值,提高预测精度和收敛速度。对锂电池充放电实验数据预处理,得到样本数据。利用MATLAB进行仿真验证,结果表明,IGWO-BP神经网络算法的预测精度相较于传统BP神经网络算法、GWO-BP神经网络算法更优,基于改进灰狼优化BP神经网络估算电池SOC的方法的绝对误差能控制在1.53%以内,有效提高了预测精度和收敛速度。

关键词：锂离子电池 SOC BP神经网络自适应策略改进灰狼算法

Estradiol Induced Estrogen Receptor-mediated Transcription and Expression of Aquaporin5

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Chemical Research in Chinese Universities 2019年第2期35卷 239-244页

作者： WEI Wei HE Xi liU Xintong LAN chuanjian li Jiang Dental Hospital Jilin UniversityChangchun 130021P.R.China

In this study,we constructed the recombinant plasmid of pGL2/Aquaporin5(AQP5)promoter(pGL2/AQP5p)luciferase reporter,then found estadiol(E2)induced AQP5 promoter activation in a dose-dependent manner.Further,we identified endogenous estrogen receptors(ER),including ERαand ERβ,expressed in human submandibular gland(HSG)cells,which responded to E2.Then demonstrated by the stimulation of E2,AQP5 was upregulated in protein level,meanwhile AQP5 located in cytomembrane was elevated in inurmnofluorescence.Furthermore,we revealed the roles of ERαand ERβin AQP5 upregulation by E2.When ERαand ERβwere overexpressed,the AQP5 transcription level and protein expression were augmented obviously.While when knockdown ER by ERα-shRNA or ERβ-shRNA,AQP5 transcription and expression attenuated.Moreover,we detected the effect of E2 in Sjogren's syndrome(SS)mice model in vivo.SS mice models were constructed by injecting submandibular gland antigen immune induction combined with estrogen deprivation,which were administoted with saline and E2.The salivary secretion was decreased,and the AQP5 expression downregulated in the submandibular gland in the SS model group.When SS mice were administrated with E2,the salivary secretion was significantly increased,and the AQP5 expression upregulated in the submandibular gland.These results suggest E2 activates AQP5p transcription and upregulates AQP5 protehi expression,mid E2 promotes salivary secretion in SS model in vivo.Taken together,we provided the evidence that E2 increased salivary secretion by activating AQP5 transcription and expression.

关键词： Aquaporin 5(AQP5) Sjogren's syndrome(SS) Estradiol

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基于代谢物分析的沅陵地方茶树种质资源评价

茶叶通讯 2024年第1期51卷 29-36页

作者：陈大海黄怀生唐睿王敏名张大明李晋中黎娜钟兴刚邓传建舒珲粟本文湖南省碣滩茶工程技术研究中心/沅陵县茶叶技术推广站湖南沅陵419600 湖南省农业科学院茶叶研究所湖南长沙410125 怀化市红茶创新工程技术研究中心湖南沅陵419600 湖南省沅陵碣滩茶业有限公司湖南沅陵419600

沅陵县地处湖南西部,是湖南产茶大县,产茶历史悠久,其独特的地理位置和优越的生态环境孕育了丰富的茶树资源。为了探明沅陵县地方茶树资源的特性及其直接利用价值,分别对其区域内官庄(GZ)、麻溪铺(WJ)和清浪(QL)等3个乡镇的茶树资源进... 详细信息

沅陵县地处湖南西部,是湖南产茶大县,产茶历史悠久,其独特的地理位置和优越的生态环境孕育了丰富的茶树资源。为了探明沅陵县地方茶树资源的特性及其直接利用价值,分别对其区域内官庄(GZ)、麻溪铺(WJ)和清浪(QL)等3个乡镇的茶树资源进行挂牌调查及鲜叶内主要代谢物检测分析。结果发现,WJ茶树资源的水浸出物含量最高,QL的茶多酚含量最高,GZ的游离氨基酸和咖啡碱含量最高;茶多酚和咖啡碱区域间存在显著差异(p0.05),儿茶素组分中仅表没食子儿茶素(Epigallocatechin,EGC)和表没食子儿茶素没食子酸酯(Epigallocatechin gallate,EGCG)含量区域间存在明显差异(p0.05)。聚类分析和单一生化成分分析,所取样品可聚为三类,Ⅰ类为茶多酚较低、氨基酸较低及简单儿茶素较高的资源,Ⅱ类为游离氨基酸含量较高、茶多酚含量较低和酚氨比值较低的资源,Ⅲ类为高茶多酚、高儿茶素尤其是酯型儿茶素EGCG含量高的资源。其中较适合加工绿茶的资源有WJ08、QL01、QL02、QL11和QL14;适合加工红茶的资源有QL07、QL03、QL09和QL13。特异资源有QL07(EGCG含量>10%)、QL05(高游离氨基酸含量3.961%)、QL11(低儿茶素苦涩味指数4.365)与GZ04(低酚氨比6.881),这些特异资源可为茶树育种及茶叶生产提供原材料。

关键词：茶树种质资源生化成分儿茶素,沅陵

On stress-induced voltage hysteresis in lithium ion batteries:Impacts of surface effects and interparticle compression

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Science China(Technological Sciences) 2019年第8期62卷 1357-1364页

作者： JIN chuanjian li Haoliang SONG YiCheng LU Bo SOH A. K. ZHANG JunQian Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China Department of Mechanics Shanghai University Shanghai 200444 China Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai University Shanghai 200444 China School of Engineering Monash University Sunway Campus Bandar Sunday 47500 Malaysia

Application of silicon in high capacity electrodes of lithium ion battery suffers from stress effects and, in turn, affects voltage performance of battery. This paper established a reaction-diffusion-stress coupled model and investigated the stress induced voltage hysteresis with consideration of diffusion induced stress, surface effects and interparticle compression. It was found stress and stress induced voltage hysteresis depended on particle size. In big particles, diffusion induced stress is dominant and leads to significant hysteresis in both stress and voltage, indicating energy dissipation due to stress effects. In small particles, e.g.,radius of dozens nanometers, diffusion induced stress was negligible while surface effects played dominant role, leading to nearly vanished voltage hysteresis shifting away from equilibrium potential. According to calculation, particle sizes around 100 nm are appropriate choice for electrode design as both diffusion induced stress and surface effects are insignificant. Finally,interparticle compression pushed the stress hysteresis to compressive side and led to early termination of lithiation at cut-off voltage. Denser electrode would enhance this effect. It indicated that there must be a limit of mixing ratio of silicon because higher interparticle compressive stress due to more introduced silicon would impede the battery from fully charged.

关键词： lithium ion battery voltage hysteresis stress surface effect interparticle compression

Expression of Phytoestrogens in pGL2/AQPI Promoter Reporter System

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Chemical Research in Chinese Universities 2018年第6期34卷 929-933页

作者： WEI Wei ZHAO Chaoyue liU Sitong JIAO Xiaofei liU Ximong LAN chuanjian li Jiang Dental Hospital of Jilin University Changchun 130021 P. R. China The First Hospital of Harbin Harbin 150010 P. R. China Edmond H. Fischer Signal Transduction Laboratory School of Life Sciences Jilin University Changchun 13001Z P R. China

In this study, we amplified aqnaporin I（AQP1） promoter sequence with polymerase chain reaction（PCR）, then AQP1 promoter fragment and pGL2 basic vector were linked to create an artificial pGL2/AQP1 promoter re- porter system. A certain concentration of 17β-estradiol（E2） activated pGL2/AQPlp, which demonstrated the pGL2/AQPlp transcriptional system effective. The pGL2/AQP1 promoter reporter system was applied to evaluate the activate effect on AQP1 of different kinds of phytoestrogens. Dual hiciferase reporter gene activity assay showed that a certain concentration phytoestrogens including daidzein and genistein can increase AQP1 promoter transcription activity. In addition, E2, daidzein and genistein can make AQP1 protein endogenous expression level increase and promote the function of water scretion. The result can guide the clinical application to treat the Sjogren＇s syndrome and provide a necessary molecular tool for the subsequent drug screening.

关键词： Aquaporin I（AQP1） Sjogren＇s syndrome 17β-Estradiol Phytoestrogen