检索结果-南通市图书馆

New Results in Stabilization of Uncertain Nonholonomic Systems:An Event-Triggered Control Approach

Journal of Systems Science & Complexity 2021年第5期34卷 1953-1972页

作者： LIU Tengfei ZHANG Pengpeng WANG Mengxi JIANG zhong-ping State Key Laboratory of Synthetical Automation for Process Industries Northeastern UniversityShenyang 110004China. Department of Electrical and Computer Engineering New York University370 Jay StreetBrooklynNY 11201USA

This paper reports latest developments in event-triggered and self-triggered control of uncertain nonholonomic systems in the perturbed chained *** order to tackle the effects of drift uncertain nonlinearities,nonholonomic constraints and nonsmooth aperiodic sampling in eventbased control,a novel systematic design scheme is proposed by integrating set-valued maps with stateseparation and state-scaling *** stability analysis of the closed-loop event-triggered control system is based on the cyclic-small-gain techniques that overcome the limitation of Lyapunov theory in the construction of Lyapunov functions for nonsmooth dynamical systems and enjoy inherent robustness properties due to the use of gain-based characterization of robust *** specifically,the closed-loop event-triggered control system is transformed into an interconnection of multiple input-tostate stable systems,to which the cyclic-small-gain theorem is applied for robust stability *** self-triggered mechanisms are also developed as natural extensions of the event-triggered control *** proposed event-based control design approach is new and original even when the system model is reduced to the ideal unperturbed chained ***,the proposed methodology is also applicable to a broader class of nonholonomic systems subject to state and input-dependent *** efficacy of the obtained event-triggered controllers is validated by a benchmark example of mobile robots subject to parametric uncertainties and a measurement noise such as bias in the orientation.

关键词： Event-triggered control nonholonomic systems self-triggered control stabilization

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

Adaptive dynamic programming for finite-horizon optimal control of linear time-varying discrete-time systems

引用

Control Theory and Technology 2019年第1期17卷 73-84页

作者： Bo PANG Tao BIAN zhong-ping JIANG Control and Networks (CAN) Lab Department of Electrical and Computer Engineering Tandon School of Engineering New York University Brooklyn NY 11201 U.S.A. Bank of America Merrill Lynch One Bryant Park New York NY 70036 U.S.A.

This paper studies data-driven learning-based methods for the finite-horizon optimal control of linear time-varying discretetime systems. First, a novel finite-horizon Policy Iteration (PI) method for linear time-varying discrete-time systems is presented. Its connections with existing in finite-horizon PI methods are discussed. Then, both data-drive n off-policy PI and Value Iteration (VI) algorithms are derived to find approximate optimal controllers when the system dynamics is completely unknown. Under mild conditions, the proposed data-driven off-policy algorithms converge to the optimal solution. Finally, the effectiveness and feasibility of the developed methods are validated by a practical example of spacecraft attitude control.

关键词： Optimal control time-varying system adaptive dynamic programming policy iteration (PI) value iteration(VI)

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 Nonlinear Small-Gain Theorem for Large-Scale Infinite-Dimensional Systems

引用

Journal of Systems Science & Complexity 2018年第1期31卷 188-199页

作者： BAO Adiya LIU Tengfei JIANG zhong-ping ZHANG Lina State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang 110819 China Tandon School of Engineering New York University Brooklyn NY 11201 USA

This paper develops a large-scale small-gain result for dynamic networks composed of infinite-dimensional subsystems. It is assumed that the subsystems are input-to-output stable（IOS）and unboundedness observable（UO）, and the large-scale infinite-dimensional system can be proved to be IOS and UO if the proposed small-gain condition is satisfied.

关键词： Infinite-dimensional systems input-to-output stability(IOS) input-to-state stability(ISS) small-gain theorem

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

Effect of music therapy on chemotherapy-induced nausea and vomiting in gastrointestinal cancer:A systematic review and metaanalysis

引用

World Journal of Gastrointestinal Surgery 2023年第3期15卷 471-479页

作者： Fang-ping zhong Jun zhong Ming-Yan zhong Department of Oncology Pingxiang Second People’s HospitalPingxiang 337000Jiangxi ProvinceChina School of Biomedical Engineering Guangzhou Medical UniversityGuangzhou 511436Guangdong ProvinceChina

BACKGROUND Chemotherapy is the primary treatment for patients with advanced gastrointestinal cancer,but it has many adverse reactions,particularly nausea and *** therapy can reduce anxiety symptoms,avoid the response to the human body under various stress conditions through psychological adjustment,and improve the adverse reactions of *** To investigate the impact of music therapy on relieving gastrointestinal adverse reactions in chemotherapy for patients with digestive tract cancer by *** EMBASE,PubMed,OVID,WoS,CNKI,CBM,and VIP database were all used for searching relevant literature,and the efficacy after treatment was combined for analysis and *** This study included seven *** results of meta-analysis indicated that music therapy could reduce the nausea symptom score of patients after chemotherapy[mean difference(MD)=-3.15,95%confidence interval(CI):-4.62 to-1.68,Z=-4.20,P0.05).CONCLUSION Music therapy can significantly improve the scores of nausea and vomiting symptoms in patients with digestive system cancer during chemotherapy and reduce the incidence of grade I and above nausea and vomiting after chemotherapy,making it an effective psychological intervention method worthy of clinical promotion.

关键词： Music therapy Gastrointestinal cancer Nausea and vomiting Gastrointestinal reactions

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

Numerical model for evaluating the speckle activity and characteristics of bone tissue under the biospeckle laser system

引用

Journal of Innovative Optical Health Sciences 2021年第6期4卷 102-118页

作者： Xin Tang ping zhong Yinrui Gao Haowei Hu College of Information Science and Technology Donghua University Shanghai 201620P.R.China College of Science Donghua UniversityShanghai 201620P.R.China

This paper discusses and studies the composition and characteristics of biospeckle on the surface of bone *** used a laser speckle device to capture biospeckle patterns from fresh pig bone *** speckle activity metrics were used to measure the speckle activity of ex vivo bone tissue over *** Gaussian and Lorentzian correlation functions were used to char-acterize the ordered and disordered motion of the bone surface,together with volume scattering,to construct the *** the established mathematical model of the spatio-temporal evo-lution of the biospeckle pattern,it is possible to account for the presence of volume scattering from the biospeckle of bones,quantify the ordered or disordered motions in the biological speckle activity at the current time,and assess the ability of laser speckle correlation technique to determine biological activity.

关键词： Speckle metrology biospeckle speckle correlation computer simulation osteogenic activity biomedical optics

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 Smoothing Method for Solving Bilevel Multiobjective Programming Problems

引用

Journal of the Operations Research Society of China 2014年第4期2卷 511-525页

作者： Yi-Bing Lü zhong-ping Wan School of Information and Mathematics Yangtze UniversityJingzhou 434023HubeiChina School of Mathematics and Statistics Wuhan UniversityWuhan 430072China

In this paper,a bilevel multiobjective programming problem,where the lower level is a convex parameter multiobjective program,is *** the KKT optimality conditions of the lower level problem,this kind of problem is transformed into an equivalent one-level nonsmooth multiobjective optimization ***,a sequence of smooth multiobjective problems that progressively approximate the nonsmooth multiobjective problem is *** is shown that the Pareto optimal solutions(stationary points)of the approximate problems converge to a Pareto optimal solution(stationary point)of the original bilevel multiobjective programming *** results showing the viability of the smoothing approach are reported.

关键词： Bilevel multiobjective programming Stationary point Constraint qualification Smoothing method

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

Regulation of bone metabolism mediated byβ-adrenergic receptor and its clinical application

引用

World Journal of Clinical Cases 2021年第30期9卷 8967-8973页

作者： Xue-ping zhong Wen-Fang Xia Department of Endocrinology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022Hubei ProvinceChina

Recent studies have confirmed thatβ-adrenergic receptors(β-ARs)are expressed on the surface of osteoblasts and osteoclasts,and that the sympathetic nervous system can regulate bone metabolism by activating them.β-AR blockers(BBs)are commonly used in the treatment of cardiovascular diseases in the *** is important to investigate whether BBs have a beneficial effect on bone metabolism in the treatment of cardiovascular diseases,so as to expand their clinical *** article reviews the effects of BB on bone metabolism and the progress of clinical research.

关键词： β-Adrenergic receptors Bone metabolism β-Adrenergic receptor blocker β-Adrenergic Skeletal system

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

Serum bilirubin and ischaemic stroke: a review of literature

引用

Stroke & Vascular Neurology 2020年第2期5卷 198-204页

作者： Xiao Wang Danhong Wu ping zhong Department of Neurology Shanghai Traditional Chinese and Western Medicine HospitalShanghai University of Traditional Chinese MedicineShanghaiChina Department of Neurology Shanghai Fifth People’s HospitalFudan UniversityShanghaiChina

Bilirubin,a product of heme metabolism,is the most potent endogenous antioxidant which increases in many oxidative stress conditions such as *** has been widely known to exert neuroprotective effect on stroke through mechanisms involved in development,therefore,it can influence the occurrence and prognosis of ischaemic stroke(IS).In this review,studies were identified by a comprehensive search of Pubmed,Embase,the Cochrane Library(Cochrane Database of Systematic Reviews,Cochrane Central Register of Controlled Trials(CENTRAL),Cochrane Methodology Register)and Web of Science to examine the correlation between serum bilirubin levels and risks of developing IS as well as IS *** studies were identified by reviewing references and contacting authors.

关键词： metabolism protective Serum

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

Endpoint Prediction of EAF Based on Multiple Support Vector Machines

引用

Journal of Iron and Steel Research International 2007年第2期14卷 20-24,29页

作者： YUAN ping MAO Zhi-zhong WANG Fu-li Key Laboratory of Process Industry Automation of Ministry of Education Northeastern University Shenyang 110004 Liaoning China

The endpoint parameters are very important to the process of EAF steel-making, but their on-line measurement is difficult. The soft sensor technology is widely used for the prediction of endpoint parameters. Based on the analysis of the smelting process of EAF and the advantages of support vector machines, a soft sensor model for predicting the endpoint parameters was built using multiple support vector machines （MSVM）. In this model, the input space was divided by subtractive clustering and a sub-model based on LS-SVM was built in each sub-space. To decrease the correlation among the sub-models and to improve the accuracy and robustness of the model, the sub- models were combined by Principal Components Regression. The accuracy of the soft sensor model is perfectly improved. The simulation result demonstrates the practicability and efficiency of the MSVM model for the endpoint prediction of EAF.

关键词： endpoint prediction EAF soft sensor model multiple support vector machine (MSVM) principal components regression (PCR)

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

Molecular network-based intervention brings us closer to ending the HIV pandemic

引用

Frontiers of Medicine 2020年第2期14卷 136-148页

作者： Xiaoxu Han Bin Zhao Minghui An ping zhong Hong Shang Key Laboratory of AIDS Immunology of National Health Commission Department of Laboratory MedicineThe First Affiliated HospitalChina Medical UniversityShenyang 110001China Key Laboratory of AIDS Immunology Chinese Academy of Medical SciencesShenyang 110001China Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Hangzhou 310003China Department of AIDS and STD Shanghai Municipal Center for Disease Control and PreventionShanghai 200336China

Precise identification of HIV transmission among populations is a key step in public health ***,the HIV transmission network is usually difficult to *** molecular networks can be determined by phylogenetic approach,genetic distance-based approach,and a combination of both *** approaches are increasingly used to identify transmission networks among populations,reconstruct the history of HIV spread,monitor the dynamics of HIV transmission,guide targeted intervention on key subpopulations,and assess the effects of *** and retrospective studies have demonstrated that these molecular network-based interventions are more cost-effective than random or traditional ***,we still need to address several challenges to improve the practice of molecular network-guided targeting interventions to finally end the HIV *** data remain limited or difficult to obtain,and more automatic real-time tools are *** addition,molecular and social networks must be combined,and technical parameters and ethnic issues warrant further studies.

关键词： human immunodeficiency virus type 1 molecular cluster transmission cluster risk network targeted intervention evaluation

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

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：