检索结果-内蒙古大学图书馆

45th Annual International Conference of the IEEE engineering in Medicine and Biology Conference, EMBC 2023

作者： Wang, Hui Geng, Yanjuan Fang, Peng Li, Guanglin Cas Key Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen518055 China

ISBN: (纸本)9798350324471

the assessment of muscle properties is an essential prerequisite in the treatment of post-stroke muscle spasticity. Previous studies have shown that muscle coactivation, which reflects the simultaneous activation of agonist and antagonist muscle groups, is associated with muscle spasticity during voluntary contraction. However, current spasticity assessment approaches do not often consider muscle coactivation for passive contraction measured with surface electromyography (sEMG). The purpose here is to evaluate the validity and reliability of muscle co-activation based on sEMG for assessing spasticity of post-stroke patients. This study was conducted on 39 chronic hemiplegia post-stroke patients with varying degrees of elbow flexor spasticity. The severity of spasticity was assessed with Modified Ashworth Scale (MAS). The patients produced elbow flexion passively on affected arm. Two-channel surface sEMG recordings were acquired simultaneously for the biceps and triceps muscles. The effectiveness and reliability of the EMG-based spasticity assessment method were evaluated using Spearman's correlation analysis and intra class correlation coefficients (ICCs). The results showed that there was a statistically significant positive relationship between the level of activity and the coactivation index (R=0.710, P=0.003), while the ICCs for intra trial measures ranged between 0.928 and 0.976. Muscle coactivation is a promising tool for continuously quantifying muscle spasticity in post-stroke patients, suggesting that the EMG-based muscle coactivation index could be useful for assessing motor function. © 2023 IEEE.

关键词： Muscle

来源：评论

学校读者我要写书评

暂无评论

Distributed Optimization and Scaling Design for Solving Sylvester Equations

引用

Journal of systems Science & Complexity 2024年第6期37卷 2487-2510页

作者： CHENG Songsong YU Xin ZENG Xianlin LIANG Shu HONG Yiguang Anhui Engineering Laboratory of Human-Robot Integration System and Intelligent Equipment School of Electrical Engineering and AutomationAnhui UniversityHefei 230601China Key Laboratory of Intelligent Control and Decision of Complex Systems School of AutomationBeijing Institute of TechnologyBeijing 100081China Department of Control Science and Engineering Tongji UniversityShanghai 201804China Shanghai Research Institute for Intelligent Autonomous Systems Tongji UniversityShanghai 201210China

This paper develops distributed algorithms for solving Sylvester *** authors transform solving Sylvester equations into a distributed optimization problem,unifying all eight standard distributed matrix *** the authors propose a distributed algorithm to find the least squares solution and achieve an explicit linear convergence *** results are obtained by carefully choosing the step-size of the algorithm,which requires particular information of data and Laplacian *** avoid these centralized quantities,the authors further develop a distributed scaling technique by using local information *** a result,the proposed distributed algorithm along with the distributed scaling design yields a universal method for solving Sylvester equations over a multi-agent network with the constant step-size freely chosen from configurable ***,the authors provide three examples to illustrate the effectiveness of the proposed algorithms.

关键词： Distributed optimization least squares solution linear convergence rate step-size interval Sylvester equation

来源：评论

学校读者我要写书评

暂无评论

A Prosthetic Hand System with human-Like Grasping by Combining EMG and Visual Information 30

A Prosthetic Hand System with Human-Like Grasping by Combini...

引用

30th International Conference on Mechatronics and machine Vision in Practice, M2VIP 2024

作者： Zheng, Yue Chen, Xinxing Tian, Lan Li, Xiangxin Zhang, Haoshi Jiang, Xugang Li, Guanglin Fu, Chenglong Shenzhen Key Laboratory of Biomimetic Robotics and Intelligent Systems Shenzhen518055 China Guangdong Provincial Key Laboratory of Human-Augmentation and Rehabilitation Robotics in Universities Southern University of Science and Technology Shenzhen518055 China Cas Key Laboratory of Human-Machine Intelligence-Synergy Systems China

ISBN: (纸本)9798350391916

This paper proposed a novel prosthetic hand system integrated with a designed hybrid control method for achieving human-like grasping. The system design has been elaborated, including the mechanism design of a humanoid prosthetic hand equipped with multimodal sensing capabilities, a multi-channel EMG collector, a sensory feedback device, and a real-time central processing unit. A hybrid control method that combines electromyogram (EMG) and visual information was proposed to recognize the control intention of the system user. Preliminary verification of grasping experiments had been conducted, which proved the effectiveness of the prosthetic hand system and the hybrid control method. The development of this system aims to enhance the control performance and perceptual interaction capabilities of prosthetic hands while addressing limitations encountered in traditional myoelectric prosthetic hands. Besides, it could serve as a validation platform for assessing the control performance of diverse algorithms applied in practical applications. © 2024 IEEE.

关键词： Sensory feedback

来源：评论

学校读者我要写书评

暂无评论

Organic-inorganic hybrid hole transport layers with SnS doping boost the performance of perovskite solar cells

引用

Journal of Energy Chemistry 2022年第5期31卷 637-645页

作者： Xiaolu Zheng Haibing Wang Feihong Ye Cong Chen Weijun Ke Wenjing Zhang Chuanxin He Yanlong Tai Guojia Fang College of Chemistry and Environmental Engineering Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060GuangdongChina Shenzhen Institute Wuhan UniversityShenzhen 518057GuangdongChina Key Laboratory of Human-Machine Intelligence-Synergy Systems of Chinese Academy of Sciences and Guangdong-Hong Kong-Macao Joint Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina

Perovskite solar cells(PSCs) have demonstrated excellent photovoltaic performance which currently rival the long-standing silicon solar cells’ efficiency. However, the relatively poor device operational stability of PSCs still limits their future commercialization. Binary sulfide is a category of materials with promising optoelectrical properties, which shows the potential to improve both the efficiency and stability of *** we demonstrate that the inorganic tin monosulfide(Sn S) can be an efficient dopant in 2,2’,7,7’-tet rakis(N,N-di-p-methoxy-phenylamine)-9,9’-spirobifluorene(spiro-OMe TAD) to form a composite hole transport layer(HTL) for PSCs. Sn S nanoparticles(NPs) synthesized through a simple chemical precipitation method exhibit good crystallization and suitable band matching with the perovskites. The introduction of Sn S NPs in Spiro-OMTAD HTLs enhanced charge extraction, reduced trap state density, and shallowed trap state energy level of the devices based on the composite HTLs. Therefore, the resulting solar cells employing Sn S-doped spiro-OMe TAD HTLs delivered an improved stabilized power output efficiency of 21.75% as well as enhanced long-term stability and operational stability. Our results provide a simple method to modify the conventional spiro-OMe TAD and obtain PSCs with both high efficiency and good stability.

关键词： Perovskite solar cells SnS nanoparticles Trap state passivation Stability

来源：评论

学校读者我要写书评

暂无评论

Assessment of the Current Local Transport Situation via Online Processing of Monitoring Data and its Application for Traffic Regulation 17

Assessment of the Current Local Transport Situation via Onli...

引用

17th International Conference on Management of Large-Scale System Development, MLSD 2024

作者： Solovyev, Anatoliy A. Valuev, Andrey M. Mechanical Engineering Research Institute Named after A.A.Blagonravov of Ras Laboratory of Dynamics of Man-Machine Systems Moscow Russia

ISBN: (纸本)9798350375718

A new approach to adaptive traffic light control at an intersection is being developed by using automatic control methods while constantly monitoring local traffic flow. Methods of providing it with the necessary data, both characterizing the current local situation and statistical dependencies for the stochastic dynamics of traffic flows, are considered. Methods for obtaining estimates of the values of monitored local traffic indicators are determined. The experience of computer modeling using the proposed method shows the expected reduction in traffic delays, as well as the possibility of choosing the most effective control method for a specific traffic situation. © 2024 IEEE.

关键词： Stochastic models

来源：评论

学校读者我要写书评

暂无评论

Some Ways of Informational Instrumentation for Adaptive Urban Traffic Control by Monitoring Data Treatment

Some Ways of Informational Instrumentation for Adaptive Urba...

引用

2024 Wave Electronics and its Application in Information and Telecommunication systems, WECONF 2024

作者： Valuev, A.M. Mechanical Engineering Research Institute Named After A.A.Blagonravov Of Ras Laboratory Of Dynamics Of Man-Machine Systems Moscow Russia

ISBN: (纸本)9798350364989

The paper treats the ways to provide adaptive traffic light regulation of traffic flow with the necessary data, both those characterizing the current local situation and statistical dependencies of stochastic traffic flow dynamics. The second purpose is to demonstrate the use of these data in regulating the passage of an intersection based on automatic control principles. It is shown how to determine the necessary variables by processing data from permanent impersonal observation by technical means on a recommended set of boundaries using the knowledge of detailed intersection structure and spatio-temporal patterns in heterogeneous traffic flow. It is shown how the processed data may be used to improve the conditions for efficient and safe traffic when passing a crossroads domain. The experience of computer simulation shows the expected reduction in traffic delays, as well as the possibility of choosing the most efficient regulation method for a specific traffic situation. © 2024 IEEE.

关键词： Stochastic systems

来源：评论

学校读者我要写书评

暂无评论

Model of Stochastic Traffic Flow through an Intersection with Representation of Cluster Interaction

Model of Stochastic Traffic Flow through an Intersection wit...

引用

2024 systems of Signal Synchronization, Generating and Processing in Telecommunications, SYNCHROINFO 2024

作者： Valuev, A.M. Mechanical Engineering Research Institute Named after A.A. Blagonravov of Ras Laboratory of Dynamics of Man-Machine Systems Moscow Russia

ISBN: (纸本)9798350373448

A method is being developed for computer simulation of traffic at a controlled intersection of urban roads, considered as a random process. The proposed model explicitly takes into account the spatio-temporal structure of traffic flow, systematically considering the interdependencies between vehicle passages through conflict points of crossing and merging as well as on exit roads. The statistical dependencies used in the model for the time interval between successive vehicles on the route and the difference in their speeds are determined. Methods for obtaining such dependencies from monitoring data are considered. The proposed approach can be used to analyze the current passage of flows and to select a method for structural- parametric control of an intersection. The organization of calculations for solving such problems develops what was previously proposed and tested using the example of a T- junction. © 2024 IEEE.

关键词： Stochastic systems

来源：评论

学校读者我要写书评

暂无评论

An Optimized Boundary to Characterize the Relationship between Training Data Quantity and Neural Network Accuracy in Describing Variable Parameters of PMSMs 27

An Optimized Boundary to Characterize the Relationship betwe...

引用

27th International Conference on Electrical machines and systems, ICEMS 2024

作者： Ma, Yilin Yang, Huan Zhao, Rongxiang He, Xiangning Zhejiang University College of Electrical Engineering Hangzhou China Zhejiang Provincial Key Laboratory of Electrical Machine Systems Hangzhou China

ISBN: (纸本)9784886864406

In recent years, there is a growing interest in utilizing neural networks (NNs) to model the motor variable parameters, due to their excellent performance in nonlinear fitting. However, it is quite difficult to precisely establish a boundary to characterize the relationship between training data quantity and NN accuracy, since its coefficient depends on the intricate coupling between motor characteristics and trained NNs. As a result, the existing boundary often tends to be conservative, thus leaving room for potential savings regarding redundant training data. Accordingly, this paper proposes a coefficient estimation method, by utilizing prior accuracy tests conducted with a limited quantity of data. Notably, this approach obviates the demand for knowledge pertaining to the structural and material characteristics of motors. The primary objective of this paper is to establish a more specific boundary, thus reducing data acquisition costs. The effectiveness of the proposed method has been validated experimentally. © 2024 The Institute of Electrical Engineers of Japan.

关键词： Electric motors

来源：评论

学校读者我要写书评

暂无评论

Modeling of Stochastic Traffic Flow through an Intersection with Cluster Interaction 17

Modeling of Stochastic Traffic Flow through an Intersection ...

引用

17th International Conference on Management of Large-Scale System Development, MLSD 2024

作者： Valuev, Andrey M. Mechanical Engineering Research Institute Named after A.A.Blagonravov of Ras Laboratory of Dynamics of Man-Machine Systems Moscow Russia

ISBN: (纸本)9798350375718

A method is being developed for computer modeling of traffic at a controlled intersection of urban roads. The model represents the traffic as a random process and is based on the use of statistical data for headways in clusters of vehicles. The proposed model explicitly considers the spatiotemporal structure of traffic flow, systematically considering the interdependencies between vehicle passages through conflicting intersection and junction points and on exit roads. The proposed approach can be used to analyze the current passage of flows and to select a method for structural-parametric control of an intersection. © 2024 IEEE.

关键词： Stochastic systems

来源：评论

学校读者我要写书评

暂无评论

An Objective Pain Measurement machine Learning Model through Facial Expressions and Physiological Signals 28

An Objective Pain Measurement Machine Learning Model through...

引用

28th International Conference on Mechatronics and machine Vision in Practice, M2VIP 2022

作者： Zheng, Jianan Lin, Yingzi Mechanical and Industrial Engineering Northeastern University Intelligent Human Machine Systems Laboratory Boston United States

ISBN: (纸本)9798350334333

The widely used technique for measuring patient pain in modern medicine is based on patients' self-reported pain. Since each human body experiences pain differently and has its own distinct pain threshold, it is very difficult for professionals to objectively evaluate a patient's level of pain based on their own description. In order for pain management treatments and prescribed therapy to be efficient and effective, a precise evaluation of pain is crucial. This study developed an objective pain measurement model based on machine learning algorithms and an open-source BioVid heat pain database. More specifically, the properties of skin conductance at various pain thresholds were examined. Electrocardiogram (ECG) and facial expression data were also assessed for performance. The study's findings demonstrate that both facial expression-based and ECG-based models can detect whether a patient is in pain. The physiological response of the subject can be utilized as a nonverbal test to gauge the patient's level of discomfort. The ECG-based model is more precise than the one based on facial expressions because we are able to gather more data with the former, therefore improving the model's accuracy, by increasing the period of the pain stimulation and the number of participants. © 2022 IEEE.

关键词： Electrocardiograms

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：