检索结果-内蒙古大学图书馆

Chinese Automation Congress (CAC)

作者： Yanxing Bai Luefeng Chen Min Li Min Wu Witold Pedrycz Kaoru Hirota School of Automation China University of Geosciences Wuhan China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Engineering Research Center of Intelligent Technology for Geo-Exploration School of Automation Ministry of Education China University of Geosciences Wuhan China Department of Electrical and Computer Engineering University of Alberta Edmonton AB Canada Systems Research Institute Polish Academy of Sciences Warsaw Poland Department of Computer Engineering Istinye University Sariyer/Istanbul Turkey Tokyo Institute of Technology Yokohama Japan

In this paper, a deep residual network based on convolutional block attention module (CBAM) is proposed, which is utilized for feature extraction of partially occluded face expression data. The proposed method overcomes the problem of localized occlusion face feature extraction by focusing on the regions and channels containing important information in the occluded face data through CBAM. Multi-task cascaded convolutional networks (MTCNN) are firstly utilized to localize the key regions of face emotion, and then deep emotion features are extracted by CBAM-ResNet network. The final emotion labels are generated. The effectiveness of this paper's method is verified on the RAF-DB dataset and the occluded CK+ dataset. The experimental accuracy in the RAF-DB dataset is 76.3%, which is 3.74% and 1.64% higher than the accuracy produced by the method of RGBT, and the WLS-RF, respectively. Application experiments are carried out in the real teaching scenario, which verifies the applicability of the algorithm in the real teaching scene.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Lidar-Based Multiple Object Tracking with Occlusion Handling

Lidar-Based Multiple Object Tracking with Occlusion Handling

引用

IEEE/RSJ International Conference on Intelligent Robots and systems (IROS)

作者： Ruo-Tsz Ho Chieh-Chih Wang Wen-Chieh Lin Institute of Electrical and Control Engineering National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Electronics and Electrical Engineering National Yang Ming Chiao Tung University Mechanical and Mechatronics Systems Research Laboratories Industrial Technology Research Institute Hsinchu Taiwan Department of Computer Science National Yang Ming Chiao Tung University Hsinchu Taiwan

Occlusion remains an issue in multiple object tracking, which could cause ambiguity in object detection, such as incorrect or missing detection. Under occlusion, a track could experience an early termination, resulting in identity switches and/or fragmentation. To recover from different lengths of occlusions, the track should be maintained by considering its occlusion status. To address the issues mentioned above, we propose an indicator that can model the track's occlusion extent via geometric information provided by LiDAR data. Through incorporating the indicator into the track management and data association process, it is feasible to prevent tracks from premature termination. The proposed method is evaluated on the collected dataset which undergoes frequent and severe occlusions. Compared to the state-of-the-art probabilistic tracking approach, our approach achieves improvements of 3.26% in MOTA and 5.36% in IDF1. Additionally, we obtain 9.89% improvements in IDF1 specifically for objects experiencing severe occlusions.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The Emerging Intelligent Vehicles and Intelligent Vehicle Carriers Collaborative systems

The Emerging Intelligent Vehicles and Intelligent Vehicle Ca...

引用

IEEE Symposium on Intelligent Vehicle

作者： Zhipeng Shen Chao Huang Hailong Huang Yutong Wang Fei-Yue Wang Abbas Jamalipour Duc Truong Pham Ljubo Vlacic Andrey V. Savkin Department of Aeronautical and Aviation Engineering the Hong Kong Polytechnic University Hong Kong Department of Industrial and Systems Engineering the Hong Kong Polytechnic University Hong Kong State Key Laboratory for Management and Control of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China Institute of Engineering Macau University of Science and Technology Macau China School of Electrical and Information Engineering University of Sydney Sydney Australia Department of Mechanical Engineering University of Birmingham Birmingham UK Institute of Intelligent & Integrated Systems and the School of Engineering and Built Environment Griffith University Brisbane Australia School of Electrical Engineering and Telecommunications University of New South Wales Sydney Australia

ISBN: (数字)9798350348811

ISBN: (纸本)9798350348828

In this paper, we propose the innovative use of Intelligent Vehicle Carriers (IVCs) as a key solution to address the energy constraints of small-scale unmanned Intelligent Vehicles (IVs). IVCs function as both transporters and charging stations, significantly boosting the operational range and efficiency of IVs. Our research delves into the IV-IVC collaborative framework, highlighting the existing challenges, exploring potential solutions, and examining a range of applications. This study offers a visionary approach to revolutionizing intelligent transportation systems by leveraging the synergistic relationship between IVs and IVCs.

关键词： Intelligent vehicles Collaboration Charging stations Boosting

来源：评论

学校读者我要写书评

暂无评论

Phase mixing of propagating Alfvén waves in a single-fluid partially ionized solar plasma

arXiv

引用

arXiv 2023年

作者： McMurdo, Max Ballai, Istvan Verth, Gary Alharbi, Abdulaziz Fedun, Viktor Plasma Dynamics Group School of Mathematics and Statistics The University of Sheffield Hicks Building Hounsfield Road SheffieldS3 7RH United Kingdom Department of Mathematics Jamoum University College Umm Al-Qura University Makkah Jamoum25375 Saudi Arabia Plasma Dynamics Group Department of Automatic Control and Systems Engineering The University of Sheffield Mappin Street SheffieldS1 3JD United Kingdom

Phase mixing of Alfvén waves is one of the most promising mechanisms for heating of the solar atmosphere. The damping of waves in this case requires small transversal scales, relative to the magnetic field direction. Here this requirement is achieved by considering a transversal inhomogeneity in the equilibrium plasma density profile. Using a single fluid approximation of a partially ionized chromospheric plasma we study the effectiveness of the damping of phase mixed shear Alfvén waves and investigate the effect of varying the ionization degree on the dissipation of waves. Our results show that the dissipation length of shear Alfvén waves strongly depends on the ionization degree of the plasma, but more importantly, in a partially ionized plasma, the damping length of shear Alfvén waves is several orders of magnitude shorter than in the case of a fully ionized plasma, providing evidence that phase mixing could be a large contributor to heating the solar chromosphere. The effectiveness of phase mixing is investigated for various ionization degrees, ranging from very weakly to very strongly ionized plasmas. Our results show that phase mixed propagating Alfvén waves in a partially ionized plasma with ionization degrees in the range µ = 0.518−0.657, corresponding to heights of 1916−2150 km above the solar surface, can provide sufficient heating to balance chromospheric radiative losses in the quiet Sun. © 2023, CC BY.

关键词： Magnetohydrodynamics

来源：评论

学校读者我要写书评

暂无评论

Customizable Inverse Sensor Model for Bayesian and Dempster-Shafer Occupancy Grid Frameworks 20th

Customizable Inverse Sensor Model for Bayesian and Dempster-...

引用

20th Polish control Conference, PCC 2020

作者： Porębski, Jakub Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering Department of Automatic Control and Robotics AGH University of Science and Technology Kraków Poland Aptiv Services Poland S.A. Kraków Poland

ISBN: (纸本)9783030509354

Occupancy grid mapping is an important component in a road scene understanding for autonomous driving. It can encapsulate data from heterogeneous sensor sources like radars, LiDARs, cameras and ultrasonics. At the core of occupancy grid (OG) generation, there is usually an inverse sensor model (ISM), which infers the occupancy representation from the sensor readings. Traditional ISMs are characterized by a very rigid structure, suited only for one sensor type, and specific occupancy grid representation. This paper proposes a novel ISM framework, which offers a separation between free and occupied space, supporting both Bayesian and Dempster-Shafer OG representations. The framework is especially useful when dealing with multiple different sensors where custom or preselected probability distribution can be applied. The presented ISM architecture is modular and flexible, which is described in an illustrative example of application customized for different detection sources. © 2020, Springer Nature Switzerland AG.

关键词： Probability distributions

来源：评论

学校读者我要写书评

暂无评论

Supervisory control synthesis of timed automata using forcible events

arXiv

引用

arXiv 2021年

作者： Rashidinejad, Aida Reniers, Michel Fabian, Martin Control Systems Technology Group Department of Mechanical Engineering Eindhoven University of Technology P.O.Box 513 Eindhoven5600 MB Netherlands Department of Electrical Engineering Chalmers University of Technology Sweden

Considering real-valued clocks in timed automata (TA) makes it a practical modeling framework for discrete-event systems. However, the infinite state space brings challenges to the control of TA. To synthesize a supervisor for TA using the conventional supervisory control theory, existing methods abstract TA to finite automata (FA). For many applications, the abstraction of real-time values results in an explosion in the state space of FA. This paper presents a supervisory control synthesis algorithm directly applicable to the TA without any abstraction. The plant is given as a TA with a set of uncontrollable events and a set of forcible events. Forcible events can preempt the passage of time when needed. The synthesis algorithm works by iteratively strengthening the guards of edges labeled by controllable events and invariants of locations where the progression of time can be preempted by forcible events. The synthesized supervisor, which is also a TA, is guaranteed to be controllable, maximally permissive, and results in a nonblocking and safe supervised plant. Copyright © 2021, The Authors. All rights reserved.

关键词： Supervisory personnel

来源：评论

学校读者我要写书评

暂无评论

Application of Data Analysis Methods to Identify Problems in a Socially Significant Sector

Application of Data Analysis Methods to Identify Problems in...

引用

International Symposium on INFOTEH-JAHORINA (INFOTEH)

作者： Sergei Kurashkin Anna Glinskaya Elizaveta Shutkina Valeryi Kiryakov Nikita Pikov Information Control Systems Department Reshetnev Siberian State University of Science and Technology Krasnoyarsk Russia Laboratory of Biofuel Compositions Siberian Federal University Krasnoyarsk Russia Digital Material Science: New Materials and Technologie Bauman Moscow State Technical University Krasnoyarsk Russia Department of System Analysis Reshetnev Siberian State University of Science and Technology Krasnoyarsk Russia Department of Information Technologies in Creative and Cultural Industries Siberian Federal University Krasnoyarsk Russia

This article considers the problem of the impact of the pandemic on medical personnel in the Russian Federation. During the pandemic, one of the most acute problems is the shortage of medical personnel. The study of the issue of shortage of medical personnel is relevant both for the whole world and for Russia. The authorities of several Russian regions at once, against the backdrop of an increase in the incidence of coronavirus, announced an acute shortage of doctors and mid-level health workers. In Russia, first of all, there was a shortage of primary health care doctors - general practitioners, general practitioners, and pediatricians. Staffing problems were discussed even before the pandemic, but during the pandemic, the workload on the medical staff increased and existing specialists began to leave. This paper presents possible solutions. Such as increasing wages and attracting students to increase staff. The purpose of the study is to analyze the reasons for the lack of personnel, identify existing problems, and formulate recommendations for their elimination.

关键词： Training Industries COVID-19 Data analysis Pandemics Medical services Personnel

来源：评论

学校读者我要写书评

暂无评论

Adaptive control of Parallel Manipulator in Cartesian Space 3

Adaptive Control of Parallel Manipulator in Cartesian Space

引用

3rd IEEE International Conference on Electrical, Computer and Communication Technologies: Computer Science and Engineering, ICECCT 2019

作者： Humaidi, Amjad J. Hussein, Hanan A. Control and Systems Engineering Department University of Technology Baghdad Iraq

ISBN: (纸本)9781538681572

In this work, the position control of R4 parallel manipulator in Cartesian space has been performed using two types of controllers: proportional and derivative (PD) and adaptive controller. One scenario has been presented according to the desired trajectories of controlled robot;this scenario is based on spiral trajectory. Firstly, the tracking performance is compared between Cartesian PD and adaptive controllers. Secondly, a performance comparison is made between PD and adaptive in terms of robustness under uncertainty in mass parameter. The tracking performance evaluation is measured in terms of root mean square (RMS) value of Cartesian errors, while robustness assessment is evaluated by the variance of deviation of position response due to change of parameter. Stability analysis of adaptive controller is presented and the global stability of overall system has been proved in Cartesian space. The performance comparison study for suggested controllers has been verified using computer simulation based on Matlab/Simulink. © 2019 IEEE.

关键词： controllers

来源：评论

学校读者我要写书评

暂无评论

Design and Implementation of Turbo encoder/decoder using FPGA 1

Design and Implementation of Turbo encoder/decoder using FPG...

引用

1st International Scientific Conference of Computer and Applied Sciences, CAS 2019

作者： Fleah, Maha Ahmed Al-Doori, Qusay F. University of Technology Control and Systems Engineering Department Baghdad Iraq

ISBN: (纸本)9781728140483

Turbo codes are used to reduce the errors that occur when sending a message through a communication channel. They do that by detecting and correcting these errors. They are widely used in applications that need to transmit the information reliably over a noisy channel, due to their good performance that reaches to the Shannon limit of the channel capacity. This work will design the turbo codes using MATLAB program by two programming methods Simulink and ***. The Simulink design is used to build the turbo codes and to implement them practically on an FPGA device using VHDL code. While in *** is used to measure the turbo code performance in terms of Bit Error Rate (BER). BER is tested by changing the parameters of the turbo codes like the codes length, the iteration numbers, also by taking different rates, and the different decoding algorithms. The effect of the puncturing and non-puncturing operation is also presented. Then the obtained simulation results can be compared with each other to discuss which parameters can be used to give the best performance in designing the turbo codes circuit. © 2019 IEEE.

关键词： Field programmable gate arrays (FPGA)

来源：评论

学校读者我要写书评

暂无评论

Optimizing the performance of the feedback controller for state-based switching bilinear systems

Optimizing the performance of the feedback controller for st...

引用

作者： Lin, Shu Li, Dewei Schutter, Bart School of Computer Science and Technology University of Chinese Academy of Sciences Beijing China Key Laboratory of System Control and Information Processing Ministry of Education Shanghai China Department of Automation Shanghai Jiao Tong University Shanghai China Delft Center for Systems and Control Delft University of Technology Delft Netherlands

This article is concerned with the design and performance optimization of feedback controllers for state-based switching bilinear systems (SBLSs), where subsystems take the form of bilinear systems in different state space polyhedra. First, by further dividing the subregions into smaller regions and designing region-dependent feedback controllers in the resulting regions, the SBLSs can be transformed into corresponding switching linear systems (SLSs). Then, for these SLSs, by imposing contractility conditions on the Lyapunov functions, an upper bound on the infinite horizon quadratic cost can be obtained. Optimizing this upper bound yields the controller design. The optimization problem is formulated as a linear matrix inequalities optimization problem, which can be solved efficiently. Finally, the stability of the close-loop system under the proposed controller is established step by step through a decreasing overall Lyapunov function. © 2020 John Wiley & Sons, Ltd.

关键词： Lyapunov functions

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：