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Initial Study on Implementation of Smoothing Filters for the Purpose of Bioimpedance Spectroscopy Parameters Classification

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IFAC-PapersOnLine 2022年第4期55卷 393-398页

作者： Aleksandra Kawala-Sterniuk Amir F. Al-Bakri Mariusz Pelc Katarzyna Cichoń Wojciech Chlewicki Stepan Ozana Radek Martinek Jakub Możaryn Volodymyr Khoma Halyna Kenyo Edward Jacek Gorzelańczyk Michał Podpora Jarosław Zygarlicki Opole University of Technology Faculty of Electrical Engineering Automatic Control and Informatics 45-758 Opole Poland Department of Biomedical Engineering College of Engineering University of Babylon 51001 Babylon Iraq University of Greenwich School of Computing and Mathematical Sciences SE10 9LS London UK West Pomeranian University of Technology in Szczecin Faculty of Electrical Engineering 70-313 Szczecin Poland Faculty of Mechatronics Warsaw University of Technology 02-525 Warsaw Poland Lviv Polytechnic National University Institute of Computer Technologies Automation and Metrology Lviv Ukraine Institute of Philosophy Kazimierz Wielki University 85-092 Bydgoszcz Poland Faculty of Mathematics and Computer Science Adam Mickiewicz University in Poznań 61-614 Poznań Poland

Bioimpedance is a commonly used method for various conditions monitoring. In this paper, the authors carried out some research where they implemented various smoothing filters to enable identification of the bioimpedance spectroscopy parameters. The proposed filtering methods may also be used for application on embedded systems, which have smaller computing power but have become recently very popular. The obtained results with the implementation of smoothing filters were promising, however, some of the obtained results were unsatisfactory. This work also contains a brief introduction to bioimpedance spectroscopy and smoothing filters.

关键词： Bioimpedance Spectroscopy smoothing-filtering Savitzky-Golay Filter Median Filtering Moving-Average Filters

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Data augmentation of IMU signals and evaluation via a semi-supervised classification of driving behavior

arXiv

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arXiv 2020年

作者： Jaafer, Amani Nilsson, Gustav Como, Giacomo Stockholm Sweden School of Electrical and Computer Engineering Georgia Institute of Technology AtlantaGA United States Department of Mathematical Sciences Politecnico di Torino Italy Department of Automatic Control Lund University Sweden

Over the past years, interest in classifying drivers’ behavior from data has surged. Such interest is particularly relevant for car insurance companies who, due to privacy constraints, often only have access to data from Inertial Measurement Units (IMU) or similar. In this paper, we present a semi-supervised learning solution to classify portions of trips according to whether drivers are driving aggressively or normally based on such IMU data. Since the amount of labeled IMU data is limited and costly to generate, we utilize Recurrent Conditional Generative Adversarial Networks (RCGAN) to generate more labeled data. Our results show that, by utilizing RCGAN-generated labeled data, the classification of the drivers is improved in 79% of the cases, compared to when the drivers are classified with no generated data. Copyright © 2020, The Authors. All rights reserved.

关键词： Generative adversarial networks

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control Barrier Functions for Nonholonomic systems under Risk Signal Temporal Logic Specifications

arXiv

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arXiv 2020年

作者： Lindemann, Lars Pappas, George J. Dimarogonas, Dimos V. Division of Decision and Control Systems KTH Royal Institute of Technology Stockholm100 44 Sweden Department of Electrical and Systems Engineering University of Pennsylvania PhiladelphiaPA19104 United States

Temporal logics provide a formalism for expressing complex system specifications. A large body of literature has addressed the verification and the control synthesis problem for deterministic systems under such specifications. For stochastic systems, however, only the probability of satisfying a specification has been considered so far, neglecting the risk of not satisfying the specification. To address this shortcoming, we consider, for the first time, risk metrics, such as (but not limited to) the Conditional Value-at-Risk, and propose risk signal temporal logic. Specifically, we compose risk metrics with stochastic predicates, which are the basic logical elements. As a particular instance of such stochasticity, we consider a priori unknown environments described by semantic maps, which can be obtained by recent learning-enabled perception algorithms. For nonholonomic control systems in such environments under risk signal temporal logic specification, we present a determinization of the risk signal temporal logic specification that allows us to transform the stochastic control problem into a deterministic one. We then use time-varying control barrier function to minimize the risk of violating the specification. Copyright © 2020, The Authors. All rights reserved.

关键词： Specifications

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Optimal control of automatic Manipulator for Elimination of Galvanic Line Load Oscillation

Periodica polytechnica Electrical engineering and computer s...

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Periodica polytechnica Electrical engineering and computer science 2021年第2期65卷 91-105页

作者： Autsou, Siarhei Rassõlkin, Anton Vaimann, Toomas Demidova, Galina Saroka, Viktor Karpovich, Dzmitry Kallaste, Ants Department of Automation of Production Processes and Electrical Engineering Faculty of Chemical Technology and Technique Belarussian State Technological University 13a Sverdlova str. Minsk220006 Belarus Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology 5 Ehitajate street Tallinn19086 Estonia Faculty of Control Systems and Robotics Itmo University 49 Kronverksky Pr. St. Petersburg197101 Russia

This paper provides an analysis of the current state-of-The-Art technologies in the field of auto-operators used in production during the electroplating process. General schemes of operations are presented, benefits and drawbacks of each scheme are discussed. The paper discusses an increase in the operating efficiency of the auto-operator in transient conditions (braking and acceleration) by reducing suspension oscillations and provides an example of a similar problem from other industries. In addition to the classification of the auto-operators, three main ways and control methods of the auto-operator of a galvanic line are presented. The main ways of eliminating oscillations during the movement of the auto-operator, as well as the rationale for the choice of adaptive (optimal) control, based on and comparing the basic control algorithms of the robot manipulator, are discussed. The comparative analysis of algorithms used to determine the optimal control has been carried out. Application field of each optimal control method described, moreover advantages and disadvantages as well as implementation methods described. Bellman dynamic programming method was chosen to eliminate oscillations of the suspension with details during the auto-operator transient conditions, the chosen method takes into account all necessary conditions to achieve the desired result. © 2021 Budapest University of technology and Economics. All rights reserved.

关键词： Dynamic programming

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On a network SIS model with opinion dynamics 21st

On a network SIS model with opinion dynamics

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21st IFAC World Congress 2020

作者： Xuan, Weihao Ren, Ruijie Paré, Philip E. Ye, Mengbin Ruf, Sebastian Liu, Ji School of Mechanical Engineering University of Leeds United Kingdom Division of Decision and Control Systems KTH Royal Institute of Technology Stockholm Sweden Faculty of Science and Engineering ENTEG University of Groningen Netherlands Center for Complex Networks Research Department of Psychology Northeastern University United States Department of Electrical and Computer Engineering Stony Brook University United States

This paper proposes a network continuous-time susceptible-infected-susceptible (SIS) model coupled with individual opinion dynamics, where the opinion dynamics models an individual's perceived severity of illness or perceived susceptibility. The effects of opinion dynamics on the network SIS model are studied by analyzing the limiting behaviors of the system model, equilibria of the system and their stability. Copyright © 2020 The Authors. This is an open access article under the CC BY-NC-ND license

关键词： Dynamics

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Network Security Situation Awareness technology Based on Multi-source Heterogeneous Data

Network Security Situation Awareness Technology Based on Mul...

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2020 International Conference on Cyberspace Innovation of Advanced Technologies, CIAT 2020

作者： Zhang, Daojuan Qian, Kexiang Wang, Wenhui Fang, Fuyang Wang, Chonghua Luo, Xi State Grid Key Laboratory of Information and Network Security Global Energy Interconnection Research Institute Co. Ltd Beijing China Information Science Academy China Electronics Technology Group Corporation Beijing China Department of Security Technology China Industrial Control Systems Cyber Emergency Response Team Beijing China Cyber Space Institute of Advanced Technology Guangzhou University Guangzhou China

ISBN: (纸本)9781450387828

With the development of information technology, the scale of the network continues to expand, and the security issues continue to increase. The complexity of the network security situation is increasing and the importance of the network security situational awareness continues to increase. The data sources are wide, the type and the number are large in a large-scale network environment currently. This paper comprehensively studies the network security situational awareness technology based on multi-source heterogeneous data. In addition, this paper introduces the origin, concept and the model of the network situational awareness, as well as the characteristics of network security situational awareness based on multi-source heterogeneous data fusion. Finally, the key technologies in the security situational awareness such as the extraction of situational elements, multi-source data fusion, situation assessment, situation prediction and visual display are introduced. © 2020 ACM.

关键词： Data fusion

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A piecewise ellipsoidal reachable set estimation method for continuous bimodal piecewise affine systems

arXiv

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arXiv 2021年

作者： Thuan, Le Quang Nam, Phan Thanh Baldi, Simone Department of Mathematics and Statistics Quy Nhon University 170 An Duong Vuong Binh Dinh Quy Nhon Viet Nam School of Mathematics Southeast University Jiulonghu Campus Library 514 Nanjijng211189 China Delft Center for Systems and Control Delft University of Technology Netherlands

In this work, the issue of estimation of reachable sets in continuous bimodal piecewise affine systems is studied. A new method is proposed, in the framework of ellipsoidal bounding, using piecewise quadratic Lyapunov functions. Although bimodal piecewise affine systems can be seen as a special class of affine hybrid systems, reachability methods developed for affine hybrid systems might be inappropriately complex for bimodal dynamics. This work goes in the direction of exploiting the dynamical structure of the system to propose a simpler approach. More specifically, because of the piecewise nature of the Lyapunov function, we first derive conditions to ensure that a given quadratic function is positive on half spaces. Then, we exploit the property of bimodal piecewise quadratic functions being continuous on a given hyperplane. Finally, linear matrix characterizations of the estimate of the reachable set are derived. © 2021, CC BY.

关键词： Geometry

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Integrated carbon and nitrogen management for cost-effective environmental policies in China

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Science 2025年第6751期388卷 1098-1103页

作者： Xin Xu Xiuming Zhang Yiyang Zou Tianrun Chen Jingfang Zhan Luxi Cheng Wilfried Winiwarter Shaohui Zhang Peter M. Vitousek Wim de Vries Baojing Gu State Key Laboratory of Soil Pollution Control and Safety Zhejiang University Hangzhou China. College of Environmental and Resource Sciences Zhejiang University Hangzhou China. International Institute for Applied Systems Analysis Laxenburg Austria. Ministry of Education Key Laboratory of Environment Remediation and Ecological Health Zhejiang University Hangzhou China. College of Computer Science and Technology Zhejiang University Hangzhou China. Policy Simulation Laboratory Zhejiang University Hangzhou China. Institute of Environmental Engineering University of Zielona Góra Zielona Góra Poland. School of Economics and Management Beihang University Beijing China. Department of Earth System Science Stanford University Stanford CA USA. Wageningen University and Research Earth Systems and Global Change Group Wageningen Netherlands. Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Zhejiang University Hangzhou China.

Carbon and nitrogen are central elements in global biogeochemical cycles. To effectively manage carbon and nitrogen in China, we developed a comprehensive model for quantifying their fluxes, investigating their interplay across 16 human and natural subsystems. Between 1980 and 2020, nitrogen losses in China increased 2.3-fold and carbon emissions surged 6.5-fold. Integrated carbon and nitrogen management holds the potential for a 74% reduction in nitrogen losses to air and water and a 91% decrease in carbon emissions to the atmosphere by 2060. Compared with separate control of carbon or nitrogen, integrated management delivers an additional reduction of 1.8 million tons of nitrogen and 26.5 million tons of carbon by 2060, bringing out a 37% decrease in unit abatement cost and a net societal benefit of 1384 billion USD.

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Investigation on the influence of nozzle orifice position under conditions of ultra-high pressure multi-pulse injection and PCCI combustion

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AIP Conference Proceedings 2024年第1期3086卷

作者： Pop-Paul Ewphun Tsuyoshi Nagasawa Hidenori Kosaka Susumu Sato National Energy Technology Center (ENTEC) National Science and Technology Development Agency (NSTDA) 111 Thailand Science Park Paholyothin Rd. Khlong Nueng Khlong Luang Pathum Thani 12120 Thailand Department of Systems and Control Engineering Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japan

The compression ignition engine has the highest thermal efficiency compared to other internal combustion engines. However, combustion also results in significant amounts of soot and NOx emissions. Soot and NOx emissions can be reduced simultaneously by adopting premixed charge compression ignition (PCCI) combustion. Unfortunately, PCCI combustion is difficult to manage in terms of ignition time and has a restricted operating range. The combination of ultra-high injection pressure and multi-pulse injection shows the promise of controlling PCCI combustion, reducing emissions and improving thermal efficiency. Unfortunately, increased impingement from ultra-high injection pressure reduces thermal efficiency due to increased impingement. The penetration of the spray must be decreased in order to address this problem. By applying an offset orifice nozzle, the problem can be solved. An offset orifice nozzle was created by moving the orifice aliment from the sac’s center to the periphery of the sac in the direction of the swirl. The offset orifice nozzle was given a counter bore design to maintain the same constant orifice length as the regular nozzle. The experiments were conducted on a single-cylinder engine both with and without optical access. Three equally distributed main injection pulses at varied injection pressures from 150 to 350 MPa were used. An advanced rate of heat release was provided by the offset orifice nozzle. The offset orifice nozzle, however, produces a slightly greater flame temperature with a wider flame area. Additionally, it offers a broader, more intense OH* chemiluminescence region, particularly for the 2nd and 3rd injections.

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Front Cover: Wireframe DNA Origami Capable of Vertex-protruding Transformation (ChemBioChem 10/2025)

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ChemBioChem 2025年第10期26卷

作者： Yosuke Ochi Wataru Kato Yoichi Tsutsui Dr. Yuki Gomibuchi Daichi Tominaga Keisuke Sakai Takeshi Araki Suzunosuke Yoshitake Prof. Dr. Takuo Yasunaga Prof. Dr. Yusuke V. Morimoto Prof. Dr. Kazuhiro Maeda Prof. Dr. Junichi Taira Prof. Dr. Yusuke Sato Department of Bioscience and Bioinformatics Kyushu Institute of Technology 680-4 Kawazu Iizuka Fukuoka 820-8502 Japan Dedication Y. Ochi W. Kato and Y. Tsutsui equally contributed to this work. Department of Physics and Information Technology Kyushu Institute of Technology 680-4 Kawazu Iizuka Fukuoka 820-8502 Japan Department of Intelligent and Control Systems Kyushu Institute of Technology 680-4 Kawazu Iizuka Fukuoka 820-8502 Japan

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