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IEEE Transactions on Intelligent Vehicles 2024年第9期9卷 1-13页

作者： Kamal, Md Abdus Samad Bakibillah, A.S.M. Hayakawa, Tomohisa Yamada, Kou Imura, Jun-ichi Division of Mechanical Science and Technology Graduate School of Science and Technology Gunma University 1-5-1 Tenjincho Kiryu Japan Department of Systems and Control Engineering School of Engineering Tokyo Institute of Technology Tokyo Japan

Traffic accidents often result in quick bottlenecks and increase injudicious lane changes near incidents (or lane blockage), worsening collision risks, congestion, and fuel consumption. As a practical solution, this paper proposes a novel cooperative look-ahead lane change (Co-LLC) system for automated vehicles (AVs) to mitigate sudden accident-induced traffic effects by improving driving intelligence and safety in critical scenarios. The proposed Co-LLC system comprises the state prediction model, safety and impact evaluation unit, and decision system. Firstly, we analyze the immediate impacts of traffic accidents and identify that a lack of anticipation causes a lane change hot spot near the incident. Consequently, most attempts to change lanes early are unsuccessful due to uncooperative behavior from vehicles in the destination lane. Secondly, we design anticipatory and cooperative lane change systems for AVs to decide the need and feasibility of a lane change in advance. Thus, the proposed system enables AVs to change lanes smoothly and cooperate with other vehicles during lane changes. Finally, we investigate the impact of different penetration rates of AVs using the proposed system on overall traffic performance. The performance of our proposed system is compared to the traditional driving system, and the results show that our proposed system improves the lane-changing behavior of AVs, assists traditional vehicles in changing their lanes smoothly, and mitigates sudden accident-induced traffic impacts. Moreover, the proposed system improves the overall traffic performance with increased penetration rates. Our proposed system is computationally efficient and suitable for real-time driving in critical traffic scenarios. IEEE

关键词： Traffic congestion

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Intelligent obstacle avoidance algorithm for safe urban monitoring with autonomous mobile drones

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Journal of Electronic Science and Technology 2024年第4期22卷 19-36页

作者： Didar Yedilkhan Abzal E.Kyzyrkanov Zarina A.Kutpanova Shadi Aljawarneh Sabyrzhan K.Atanov Department of Computer Engineering Astana IT UniversityAstana010000Kazakhstan Department of Computer and Software Engineering L.N.Gumilyov Eurasian National UniversityAstana010000Kazakhstan Department of Automation and Control Systems L.N.Gumilyov Eurasian National UniversityAstana010000Kazakhstan Department of Software Engineering Jordan University of Science and TechnologyIrbid22110Jordan

The growing field of urban monitoring has increasingly recognized the potential of utilizing autonomous technologies,particularly in drone *** deployment of intelligent drone swarms offers promising solutions for enhancing the efficiency and scope of urban condition *** this context,this paper introduces an innovative algorithm designed to navigate a swarm of drones through urban landscapes for monitoring *** primary challenge addressed by the algorithm is coordinating drone movements from one location to another while circumventing obstacles,such as *** algorithm incorporates three key components to optimize the obstacle detection,navigation,and energy efficiency within a drone ***,the algorithm utilizes a method to calculate the position of a virtual leader,acting as a navigational beacon to influence the overall direction of the ***,the algorithm identifies observers within the swarm based on the current *** further refine obstacle avoidance,the third component involves the calculation of angular velocity using fuzzy *** approach considers the proximity of detected obstacles through operational rangefinders and the target’s location,allowing for a nuanced and adaptable computation of angular *** integration of fuzzy logic enables the drone swarm to adapt to diverse urban conditions dynamically,ensuring practical obstacle *** proposed algorithm demonstrates enhanced performance in the obstacle detection and navigation accuracy through comprehensive *** results suggest that the intelligent obstacle avoidance algorithm holds promise for the safe and efficient deployment of autonomous mobile drones in urban monitoring applications.

关键词： Drone swarms Fuzzy logic Intelligent solution Smart city Urban monitoring

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Voltage and power control for distributed generation units in islanded microgrids 6th

Voltage and power control for distributed generation units i...

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6th International Conference on Renewable Energies Offshore, RENEW 2024

作者： Rouch, T. Bagheri M’zoughi, F. Aboutalebi, P. Ahmad, I. Garrido, A.J. Garrido, I. Institute of Research and Development of Processes—IIDP Department of Automatic Control and Systems Engineering Faculty of Engineering of Bilbao University of the Basque Country Bilbao Spain

ISBN: (纸本)9781032905570

This article presents an optimized control strategy tailored for DC islanded microgrids, featuring a voltage controller based on mixed H2/H∞ state feedback using linear matrix inequalities (LMIs) and a power controller guided by droop characteristics. A polytopic modeling approach addresses system uncertainties and nonlinearities. The controller aims to stabilize the system, reject disturbances, equitably distribute power among distributed generation units (DGUs), and minimize energy consumption. Regional pole placement ensures welldamped transient responses. Simulation results demonstrate effective management of load perturbations and DGU disconnections, with a comparative analysis against an H∞ controller offering additional insights into performance. © 2025 The Author(s).

关键词： Microgrids

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Pareto Improvement for Noncooperative systems With Vector-valued Payoff Functions 63

Pareto Improvement for Noncooperative Systems With Vector-va...

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63rd IEEE Conference on Decision and control, CDC 2024

作者： Guo, Zehui Hayakawa, Tomohisa Tokyo Institute of Technology Department of Systems and Control Engineering Meguro Tokyo152-8552 Japan

ISBN: (纸本)9798350316339

Definition of weak Pareto improvement is given for noncooperative systems with vector-valued payoff functions. The region where a system trajectory is Pareto improving is characerized. Some necessary and sufficient conditions are given for when the system trajectory is (weak) Pareto improving in the entire state space. We provide several numerical examples to illustrate our results. © 2024 IEEE.

关键词： State space methods

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Stabilization of Inverted Pendulum using Neural Network controller 10

Stabilization of Inverted Pendulum using Neural Network Cont...

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10th International Conference on Advanced Computing and Communication systems, ICACCS 2024

作者： Kumar, Swetha R. Gunavarshini, R. Nithiyashri, S. Priyanka, G.S. Rithiga, R. Psg College of Technology Department of Instrumentation and Control Systems Engineering Tamil Nadu Coimbatore India

ISBN: (纸本)9798350384369

The paper aims to develop an innovative and robust control system for stabilizing an inverted pendulum using a neural network controller. This combines principles of control theory with the power of artificial intelligence to address the complex and dynamic nature of the inverted pendulum problem. The controller used here is neural network model predictive controller. The data obtained from the plant model is used to train the neural network. Various numbers of hidden layers were given and their behaviour was analyzed and the one with the minimum error was chosen. The controller is trained to produce a result with the least amount of error by providing the reference signal and the error value as inputs. After the successful training, the neural network controller stabilizes the inverted pendulum model. © 2024 IEEE.

关键词： Inverted pendulum

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Unraveling structure and performance of protein a ligands at liquid–solid interfaces: A multi-techniques analysis

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Chinese Journal of chemical engineering 2023年第2期54卷 232-239页

作者： Yi Shen Xinshuang Chu Qinghong Shi Department of Biochemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Key Laboratory of Systems Bioengineering and Frontiers Science Center for Synthetic Biology(Ministry of Education) Tianjin UniversityTianjin 300350China

Oriented ligand immobilization is one of the most effective strategies used in the design and construction of a high-capacity protein A chromatography. In this work, cysteine was introduced as anchoring sites by substituting a specific residue on Helix Ⅰ, Ⅱ, and at C-terminus of antibody binding domain Z from protein A, respectively, to investigate structural evolution and binding behavior of protein A ligands at liquid-solid interfaces. Among the three affinity dextran-coated Fe_(3)O_(4) magnetic nanoparticles(Fe_(3)O_(4)@Dx MNPs), affinity MNPs with the immobilized ligand via N11C on Helix Ⅰ(Fe_(3)O_(4)@Dx-Z_(1) MNPs) had the highest helical content, and MNPs with the immobilized ligand via G29C on Helix Ⅱ(Fe_(3)O_(4)@Dx-Z_(2) MNPs) had the lowest helical content at the same pHs. It was attributed to less electrostatic attraction of ligand to negatively charged surface on Fe_(3)O_(4)@Dx-Z_(1) MNPs because of less positive charged residues on Helix Ⅰ(K6) than Helix Ⅱ(R27/K35). Among the three affinity MNPs, moreover, the highest affinity to immunoglobulin G(IgG) binding was observed on Fe_(3)O_(4)@Dx-Z_(1) MNPs in isothermal titration calorimetry measurement, further validating greater structural integrity of the ligand on Fe_(3)O_(4)@Dx-Z_(1) MNPs. Finally,the study of IgG binding on MNPs and 96-well plates showed that anchoring sites for ligand immobilization had distinct influences on IgG binding and IgG-mediated antigen binding. This work illustrated that anchoring sites of the ligands had a striking significance for the molecular structure of the ligand at liquid-solid interfaces and raised an important implication for the design and optimization of protein A chromatography and protein A-based immunoassay analysis.

关键词： Adsorption Interface Thermodynamics Protein A ligand Immobilization Molecular structure

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Encrypted system identification as-a-service via reliable encrypted matrix inversion 63

Encrypted system identification as-a-service via reliable en...

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63rd IEEE Conference on Decision and control, CDC 2024

作者： Adamek, Janis Binfet, Philipp Schluter, Nils Darup, Moritz Schulze Tu Dortmund University Control and Cyber-physical Systems Group Department of Mechanical Engineering Germany

ISBN: (纸本)9798350316339

Encrypted computation opens up promising avenues across a plethora of application domains, including machine learning, health-care, finance, and control. Arithmetic homomorphic encryption, in particular, is a natural fit for cloud-based computational services. However, computations are essentially limited to polynomial circuits, while comparisons, transcendental functions, and iterative algorithms are notoriously hard to realize. Against this background, the paper presents an encrypted system identification service enabled by a reliable encrypted solution to least squares problems. More precisely, we devise an iterative algorithm for matrix inversion and present reliable initializations as well as certificates for the achieved accuracy without compromising the privacy of provided I/O-data. The effectiveness of the approach is illustrated with three popular identification tasks. © 2024 IEEE.

关键词： Encryption algorithms

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Potential Use Calophyllum inophyllum Oil as Biodiesel Feedstock: A Scientometric Analysis and Review of the Production Process

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Journal of The Institution of Engineers (India): Series E 2024年第1期105卷 89-102页

作者： Sudalai, S. Ishwaryarani, S. Philip, Jeff Frankklin Devanesan, M.G. Arumugam, A. Department of Chemical Engineering Annamalai University Tamil Nadu Chidambaram India Centre for Pollution Control and Environmental Engineering School of Engineering and Technology Pondicherry University Kalapet Puducherry605014 India Bioprocess Intensification Laboratory Centre for Bioenergy School of Chemical and Biotechnology SASTRA Deemed University Thirumalaisamudram Tamil Nadu Thanjavur613401 India

Biodiesel is gaining more interest due to its advantages over petroleum diesel, even though its production remains confronted with many challenges. These in terms of the desire for feedstocks encompass the feedstock cultivation technique, post-harvest technologies, the presence of high free fatty acids in most oils used, and the non-availability of oils in the open market. Among the numerous sources of feedstocks reviewed, non-edible oils seem to have greater possibilities than edible oils and animal fat within the biodiesel enterprise. Calophyllum inophyllum is an economically and potentially valuable plant. This plant can be used as a raw material for biodiesel production, produces useful by-products and contains various phytochemical compounds. The biodiesel obtained from this plant generates lesser emissions compared to conventional fuel. After extracting the oil from the seeds, the oil cake residue remains, which leads to recycling and disposal problems. But utilizing oil cake is the best biorefinery solution that reduces waste and cost. The various phytochemicals found in this plant show different pharmacology actions. Future research in this area will further emphasize their potential of them in the pharmacognosy field. Graphical Abstract: (Figure presented.). © The Institution of Engineers (India) 2024.

关键词： Biodiesel

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Achieving high titer and yield in the bioconversion of l-threonine to 2-hydroxybutyric acid with Escherichia coli BL21

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systems Microbiology and Biomanufacturing 2024年第2期4卷 708-715页

作者： Thai Le Bassey Friday Bassey Thuan Phu Nguyen-Vo Sunghoon Park School of Energy and Chemical Engineering Ulsan National Institute of Science and TechnologyUlsan 44919Republic of Korea Department of Chemical and Biochemical Engineering North Carolina State UniversityRaleighNC 27606USA Institute of Systems Biotechnology Saarland UniversitySaarbrückenGermany

The study investigated the enhanced production of 2-hydroxybutyric acid(2-HBA)from threonine using a two-step whole-cell bioconversion by recombinant Escherichia coli BL21(DE3)overexpressing threonine dehydratase and *** address the rate-limiting step posed by NADH regeneration for the keto-reductase reaction converting 2-ketobutyric acid(2-KBA)to 2-HBA,formate dehydrogenase from Candida boidinii was overexpressed under the T7 promoter,resulting in a high titer of 1015 mM and a yield of 0.70 mol/***,the yield was improved by disrupting three enzymes responsible for the degradation of the intermediate(2-KBA),pyruvate-formate lyase(PflB),pyruvate oxidase(PoxB),and pyruvate dehydrogenase complex(PDHc),leading to an impressive yield of 0.99 mol/mol,closely approaching the theo-retical maximum of 1.00 mol/*** triple mutant,designed to prevent 2-KBA degradation,achieved a remarkable titer of 1,400 mM and volumetric productivity of 58 mmol/L/*** the best of our knowledge,this achievement represents the highest reported titer and yield for 2-HBA production to date.

关键词： 2-hydroxybutyric acid(2-HBA) Whole-cell bioconversion Threonine Degradation pathway High titer

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Effect of turbulent fluctuation on the ignition of millimeter particle:Experimental studies and numerical modelling with a new correlation of nusselt number Author links open overlay panel

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Particuology 2024年第8期91卷 168-175页

作者： Lele Feng Jie Liu Haihui Xin Liangliang Jiang Yuxin Wu Saeideh Babaee Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization China University of Mining and TechnologyXuzhou221008China School of Safety Engineering China University of Mining and TechnologyXuzhou221116China Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials Wuhan University of Science and TechnologyWuhan430000China Department of Chemical and Petroleum Engineering University of CalgaryCalgaryAlbertaCanada Department of Energy and Power Engineering Tsinghua UniversityBeijing100084China Department of Chemical and Metallurgical Engineering University of the WitwatersrandJohannesburgSouth Africa

Understanding the influencing mechanism of turbulent fluctuation on the ignition characteristics of millimeter coal particles is *** this work,to study the effect of turbulent fluctuation on ignition time,millimeter coal particles are subjected to a specific flow field,generated in a furnace with symmetric fans.A one-dimensional model with the new proposed correlation and the Ranz-Marshall(R-M)correlation for Nu(Nusselt number)is established to simulate the coal ignition *** addition,the effects of fan speed,temperature,particle diameter,particle distance and coal type on the ignition time are *** is found that an increase in fan speed from 0 to 3000 rpm leads to a particle Reynolds number Re_(p)increase from 0 to 22.5,and a turbulent particle Reynolds number Re_(t)*increase from 0 to *** a consideration of the fluctuation effect,the new correlation of Nu gives a better prediction of ignition time compared to the R-M ***,the ignition time is revealed to decrease with an increasing fan speed and an elevating *** the ignition time shows merely an initial boost with enlarging particle distance,it exhibits a linearity with the term of particle diameter dp1.3-1.7 and Reynolds numbers(Nu*/Nu)-0.6(Nu*is turbulent Nusselt number).Based on this relationship,the difference of predicted ignition time is calculated at different Re_(p)and Re_(t)*.It is shown that at low Re_(p)or high Re_(t)*values,the new correlation should substitute for the R-M correlation.

关键词： Turbulent fluctuation Particle heat transfer Empirical correlation Coal ignition

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