检索结果-南通市图书馆

Higher-order properties and extensions for indirect MRAC and APPC of linear systems

Science China(Information Sciences) 2024年第4期67卷 218-238页

作者： Yanjun zhang zhipeng zhang Jian SUN Lei WANG Kangkang zhang National Key Lab of Autonomous Intelligent Unmanned Systems Beijing Institute of Technology Beijing Institute of Technology Chongqing Innovation Center College of Control Science and Engineering Zhejiang University Department of Electrical and Electronic Engineering Imperial College London KIOS Research and Innovation Center of Excellence University of Cyprus

Recently, a reference derived some new higher-order output tracking properties for direct model reference adaptive control(MRAC) of linear time-invariant(LTI) systems: limt→∞ e~((i))(t) = 0, i = 1,..., n~*-1, where n~* and e~((i))(t) denote the relative degree of the system and the i-th derivative of the output tracking error, respectively. However, a naturally arising question involves whether indirect adaptive control(including indirect MRAC and indirect adaptive pole placement control) of LTI systems still has higher-order tracking properties. Such properties have not been reported in the literature. Therefore, this paper provides an affirmative answer to this question. Such higher-order tracking properties are new discoveries since they hold without any additional design conditions and, in particular, without the persistent excitation condition. Given the higher-order properties, a new adaptive control system is developed with stronger tracking features.(1) It can track a reference signal with any order derivatives being unknown.(2) It has higher-order exponential or practical output tracking properties.(3) Finally, it is different from the usual MRAC system, whose reference signal’s derivatives up to the n~* order are assumed to be known. Finally, two simulation examples are provided to verify the theoretical results obtained in this paper.

关键词： higher-order tracking indirect adaptive control model reference adaptive control adaptive pole placement control

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular dynamics study of water molecules nucleation for fine particle removal:Effects of wettability and aggregation modes and comparison with experiment Author links open overlay panel

引用

Particuology 2024年第8期91卷 106-117页

作者： Junchao Xu zhipeng zhang Li Lv Yunfei zhang Yiming Xie Huaqiang Chu School of Energy and Environment Anhui University of TechnologyMaanshan243002China College of Mechanical and Electrical Engineering China Jiliang UniversityHangzhou310018China

Water vapor nucleation on particle's surface plays an important role in dust removal,cloud formation,and particle ***,the selectivity of nucleation sites and the nucleation characteristic of water molecule on the particle's surface are still unclear,especially for the aggregated *** this paper,the effects of particle wettability and aggregation modes on the selectivity of nucleation sites and the nucleation characteristics were investigated using molecular dynamics *** results were compared with our earlier experimental *** illustrates how the contact angle of clusters,the growth velocity,and the growth duration are all influenced by the interaction coefficient between water and ***,the nucleation sites of water molecules on the particle aggregation surface exhibit a definite *** primary indicator of this selectivity is the preferential nucleation of water molecules at the interfaces of linear chain aggregation particles,at the inner side of non-linear chain aggregation particles,and at the centers of ring *** results are in good agreement with our previous experimental *** significantly,additional research has revealed that subcritical-size clusters typically aggregate on two-particle surfaces spacing when the spacing smaller than the critical cluster size.

关键词： Heterogeneous nucleation Water molecule Wettability Aggregation modes Molecule dynamics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Convergence Towards the Population Cross-Diffusion System from Stochastic Many-Particle System

引用

Communications in Mathematical Research 2024年第1期40卷 43-63页

作者： Yue Li Li Chen zhipeng zhang Department of Mathematics Nanjing UniversityNanjing 210093P.R.China Institute for Analysis and Scientific Computing Vienna University of TechnologyWiedner Hauptstrafβe 8-10Vienna 1040Austria School of Business Informatics and Mathematics University of MannheimMannheim 68131Germany

In this paper,we derive rigorously a non-local cross-diffusion system from an interacting stochastic many-particle system in the whole *** convergence is proved in the sense of probability by introducing an intermediate particle system with a mollified interaction potential,where the mollification is of algebraic *** main idea of the proof is to study the time evolution of a stopped process and obtain a Gronwall type estimate by using Taylor's expansion around the limiting stochastic process.

关键词： Stochastic particle systems cross-diffusion system mean-field limit population dynamics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The MRE11–ATM–SOG1 DNA damage signaling pathway confers rice immunity to Xanthomonas oryzae

引用

Plant Communications 2024年第4期5卷 194-207页

作者： Zhan Xu Mingnan Qu Chuanlin Shi Hong zhang Wu Chen Hongge Qian zhipeng zhang Jiehua Qiu Qian Qian Lianguang Shang Guangzhou City Academy of Agricultural Sciences Key Laboratory of BiologyGenetics and BreedingGuangzhou 510000China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding College of AgricultureYangzhou UniversityYangzhou 225009China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 311400China Yazhouwan National Laboratory No.8 Huanjin RoadYazhou DistrictSanya CityHainan Province 572024China These authors contributed equally to this article

Plants are constantly exposed to microbial pathogens in the *** branch of innate plant immunity is mediated by cell-membrane-localized receptors,but less is known about associations between DNA damage and plant immune ***,we show that rice(Oryza sativa)mesophyll cells are prone to DNA double-stranded breaks(DSBs)in response to ZJ173,a strain of Xanthomonas oryzae ***(Xoo).The DSB signal transducer ataxia telangiectasia mutated(ATM),but not the ATM and Rad3-related branch,confers resistance against ***,the MRE11–ATM module phosphorylates suppressor of gamma response 1(SOG1),which activates several phenylpropanoid pathway genes and prompts downstream phytoalexin biosynthesis during Xoo ***,overexpression of the topoisomerase gene TOP6A3 causes a switch from the classic non-homologous end joining(NHEJ)pathway to the alternative NHEJ and homologous recombination pathways atXoo-induced *** enhanced ATM signaling of the alternative NHEJ pathway strengthens the SOG1-regulated phenylpropanoid pathway and thereby boosts Xoo-induced phytoalexin biosynthesis in TOP6A3-OE1 overexpression ***,the MRE11–ATM–SOG1 pathway serves as a prime example of plant–pathogen interactions that occur via host non-specific recogni*** function of TOP6-facilitated ATM signaling in the defense response makes it a promising target for breeding of rice germplasm that exhibits resistance to bacterial blight disease without a growth penalty.

关键词： Oryza sativa Xanthomonas oryzae pv.oryzae DSBs phytoalexins MRE11–ATM–SOG1 TOP6 complex

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Multi-step state-based opacity for unambiguous weighted machines

引用

Science China(Information Sciences) 2024年第11期67卷 211-221页

作者： zhipeng zhang Chengyi XIA Guoyuan QI Jun FU School of Artificial Intelligence Tiangong University School of Control Science and Engineering Tiangong University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University

Opacity is a central concept in the issue of privacy security and has been studied extensively in fields such as finite automata, probabilistic automata, and stochastic automata. Here, we investigate the problem of validating multi-step opaque properties through unambiguous weighted machines from the perspective of cyber-physical systems. First, the notion of multi-step state-based opacity for unambiguous weighted machines is presented and defined. It includes two variants of delays with a finite K and infinite steps. Subsequently, the weighted state estimate with K(infinite)-step delay is established by abstracting the possible state set that the system could have through these weighted observations. Meanwhile, to keep the observable weighted sequence consistent between the bidirectional observers, the unobserved weights of the reverse weighted machine are assumed to be reserved. Subsequently, the existence conditions are developed, and the corresponding algorithms, termed the weighted bidirectional observer, are generalized to verify these properties. Finally, several numerical examples are illustrated to demonstrate the effectiveness of the proposed method. Taken together, the current approach will be conducive to a deep understanding of the security and privacy of cyber-physical systems.

关键词： logical dynamical systems weighted state machine state estimation opacity cyber physical systems

来源：

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genome-wide association with transcriptomics reveals a shade-tolerance gene network in soybean

引用

The Crop Journal 2024年第1期12卷 232-243页

作者： Yanzhu Su Xiaoshuai Hao Weiying Zeng Zhenguang Lai Yongpeng Pan Can Wang Pengfei Guo zhipeng zhang Jianbo He Guangnan Xing Wubin Wang Jiaoping zhang Zudong Sun Junyi Gai Soybean Research Institute/MARA National Center for Soybean Improvement MARA Key Laboratory of Biology and Genetic Improvement of Soybean/State Key Laboratory for Crop Genetics and Germplasm Enhancement/State Innovation Platform for Integrated Production and Education in Soybean Bio-breeding/Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing Agricultural UniversityNanjing 210095JiangsuChina Guangxi Academy of Agricultural Sciences Nanning 530007GuangxiChina

Shade tolerance is essential for soybeans in inter/relay cropping systems.A genome-wide association study(GWAS)integrated with transcriptome sequencing was performed to identify genes and construct a genetic network governing the trait in a set of recombinant inbred lines derived from two soybean parents with contrasting shade *** improved GWAS procedure,restricted two-stage multi-locus genome-wide association study based on gene/allele sequence markers(GASM-RTM-GWAS),identified 140 genes and their alleles associated with shade-tolerance index(STI),146 with relative pith cell length(RCL),and nine with *** of these genes by biological categories allowed the construction of a protein–protein interaction network by 187 genes,of which half were differentially expressed under shading and non-shading conditions as well as at different growth *** the identified genes,three ones jointly identified for both traits by both GWAS and transcriptome and two genes with maximum links were chosen as beginners for entrance into the ***,both STI and RCL gene systems worked for shade-tolerance with genes interacted each other,this confirmed that shadetolerance is regulated by more than single group of interacted genes,involving multiple biological functions as a gene network.

关键词： Soybean(Glycine max(L.)Merr.) Shade-tolerance Restricted two-stage multi-locus genomewide association study based on gene/allele sequence markers(GASM-RTM-GWAS) Shade-tolerance index(STI) Relative cell length(RCL) Transcriptome

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Baoziwan-Majiashan Area of Jiyuan Oilfield Analysis of Reservoir Characteristics and Main Control Factors in Long 4 5 Section

引用

Open Journal of Yangtze Oil and Gas 2024年第2期9卷 48-64页

作者： Zhengxi Cui zhipeng zhang Mingling Shen Xi’ an Shiyou University Xi&#8217an China Shaanxi Provincial Key Laboratory of Oil and Gas Reservoir Xi&#8217an Shiyou University Xi&#8217an China No. 5 Oil Production Plant of Changqing Oilfield Company Petro China Xi&#8217an China

Based on the sheet, scanning electron microscope and high pressure mercury analysis method, this paper takes Jiyuan oilfield-Ma Jia mountain district 4 5 sandstone reservoir as the research object, from the reservoir petrology, pore type and porosity, permeability, the system analyzed the reservoir characteristics and its control factors. The results show that the sandstone in the 4 5 section of Baoziwan-Majiashan area of Jiyuan oilfield is fine in size and high in filling content. The pore types were dominated by intergranular pores and dissolved pores, with a low face rate. The reservoir property is relatively poor, with mean porosity of 11.11% and mean permeability of 1.16 × 10−3 µm2. In the low porous, low otonic background, the development of relatively high pore hypertonic areas. Compaction and cementation should play a destructive role in reservoir properties, and dissolution should play a positive role in reservoir properties. Compaction adjusts the migration of clay minerals and miscellaneous bases in the original sediment in the study area, greatly reducing the porosity and permeability of the reservoir;the development of the cement cement, carbonate cementation and some quartz secondary compounds reduces the storage space;the dissolution effect, especially the secondary dissolution pores of the reservoir, which obviously improves the properties of the reservoir.

关键词： Ordos Basin Jiyuan Area Reservoir Characteristics Reservoir Control Factor Long 4 5 Section

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A pan-TE map highlights transposable elements underlying domestication and agronomic traits in Asian rice

引用

National Science Review 2024年第6期11卷 105-118页

作者： Xiaoxia Li Xiaofan Dai Huiying He Yang Lv Longbo Yang Wenchuang He Congcong Liu Hua Wei Xiangpei Liu Qiaoling Yuan Xianmeng Wang Tianyi Wang Bintao zhang Hong zhang Wu Chen Yue Leng Xiaoman Yu Hongge Qian Bin zhang Mingliang Guo zhipeng zhang Chuanlin Shi Qianqian zhang Yan Cui Qiang Xu Xinglan Cao Dandan Chen Yongfeng Zhou Qian Qian Lianguang Shang Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural Sciences Rice Research Institute Shenyang Agricultural University Yazhouwan National Laboratory State Key Laboratory of Rice Biology China National Rice Research Institute National Key Laboratory of Tropical Crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural Sciences

Transposable elements(TEs) are ubiquitous genomic components and hard to study due to being highly repetitive. Here we assembled 232 chromosome-level genomes based on long-read sequencing *** the 232 genomes with 15 existing assemblies, we developed a pan-TE map comprising both cultivated and wild Asian rice. We detected 177 084 high-quality TE variations and inferred their derived state using outgroups. We found TEs were one source of phenotypic variation during rice domestication and differentiation. We identified 1246 genes whose expression variation was associated with TEs but not single-nucleotide polymorphisms(SNPs), such as Os Rboh B, and validated Os Rboh B's relative expression activity using a dual-Luciferase(LUC) reporter assays system. Our pan-TE map allowed us to detect multiple novel loci associated with agronomic traits. Collectively, our findings highlight the contributions of TEs to domestication, differentiation and agronomic traits in rice, and there is massive potential for gene cloning and molecular breeding by the high-quality Asian pan-TE map we generated.

关键词： transposable element super pan-genome pan-TE rice

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

外圆磨削18CrNiMo7-6力模型及表面完整性研究

引用

中国机械工程 2024年第3期35卷 381-393页

作者：王栋陈磊张志鹏郑州大学机械与动力工程学院郑州450001

为了准确和有效地控制磨削参数对磨削力及表面完整性的影响,通过解析法,以磨粒与材料间的塑性变形、压痕理论以及剪切应变效应为理论依据,建立了三阶段的磨削力理论模型。选定棕刚玉砂轮进行磨削试验,探究了磨削参数对磨削力的影响以及... 详细信息

为了准确和有效地控制磨削参数对磨削力及表面完整性的影响,通过解析法,以磨粒与材料间的塑性变形、压痕理论以及剪切应变效应为理论依据,建立了三阶段的磨削力理论模型。选定棕刚玉砂轮进行磨削试验,探究了磨削参数对磨削力的影响以及磨削参数和磨削力对表面完整性的影响,通过外圆横向磨削正交试验获得了外圆磨削最优工艺参数。结果表明,外圆磨削力模型法向磨削力和切向磨削力的预测平均误差分别为5.56%和7.08%;砂轮径向进给速度f_(r)对磨削力的影响最大,磨削宽度b次之,工件转速n_(w)和砂轮粒度的影响较小;f_(r)和b对残余应力的影响较大,砂轮粒度对表面粗糙度的影响最大;随着磨削力的增大,表面粗糙度值一直增大,残余应力先减小后增大,沿深度方向残余应力最大值先增大后减小,在试验所取参数条件下,影响残余应力的深度分布范围基本在20~40μm;最优工艺参数组合如下:f_(r)=0.15 mm/min,n_(w)=120 r/min,b=10 mm,砂轮粒度80。

关键词：外圆磨削横向磨削磨削力模型 18CrNiMo7-6钢表面完整性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Uncovering key salt-tolerant regulators through a combined eQTL and GWAS analysis using the super pan-genome in rice

引用

National Science Review 2024年第4期11卷 55-69页

作者： Hua Wei Xianmeng Wang zhipeng zhang Longbo Yang Qianqian zhang Yilin Li Huiying He Dandan Chen Bin zhang Chongke Zheng Yue Leng Xinglan Cao Yan Cui Chuanlin Shi Yifan Liu Yang Lv Jie Ma Wenchuang He Xiangpei Liu Qiang Xu Qiaoling Yuan Xiaoman Yu Tianyi Wang Hongge Qian Xiaoxia Li Bintao zhang Hong zhang Wu Chen Mingliang Guo Xiaofan Dai Yuexing Wang Xiaoming Zheng Longbiao Guo Xianzhi Xie Qian Qian Lianguang Shang Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural Sciences Institute of Wetland Agriculture and Ecology Shandong Academy of Agricultural Sciences State Key Laboratory of Rice Biology China National Rice Research Institute National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop Science Chinese Academy of Agricultural Sciences Yazhouwan National Laboratory

For sessile plants, gene expression plays a pivotal role in responding to salinity stress by activating or suppressing specific genes. However, our knowledge of genetic variations governing gene expression in response to salt stress remains limited in natural germplasm. Through transcriptome analysis of the Global Mini-Core Rice Collection consisting of a panel of 202 accessions, we identified 22 345 and 27 610expression quantitative trait loci associated with the expression of 7787 and 9361 e Genes under normal and salt-stress conditions, respectively, leveraging the super pan-genome map. Notably, combined with genome-wide association studies, we swiftly pinpointed the potential candidate gene STG5—a major salt-tolerant locus known as q STS5. Intriguingly, STG5 is required for maintaining Na+/K+homeostasis by directly regulating the transcription of multiple members of the Os HKT gene family. Our study sheds light on how genetic variants influence the dynamic changes in gene expression responding to salinity stress and provides a valuable resource for the mining of salt-tolerant genes in the future.

关键词： super pan-genome expression quantitative trait loci GWAS salt tolerance rice

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：