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arXiv 2019年

作者： Noroozi, Navid Geiselhart, Roman Grüne, Lars Wirth, Fabian R. Otto-von-Guericke University of Magdeburg Laboratory for Systems Theory and Automatic Control Magdeburg39106 Germany University of Ulm Institute of Measurement Control and Microtechnology Albert-Einstein-Allee 41 Ulm89081 Germany University of Bayreuth Mathematical Institute Universitätsstraße 30 Bayreuth95440 Germany University of Passau Faculty of Computer Science and Mathematics Innstraße 33 Passau94032 Germany

In this work, we establish different control design approaches for discrete-time systems, which build upon the notion of finite-step control Lyapunov functions (fs-CLFs). The design approaches are formulated as optimization problems and solved in a model predictive control (MPC) fashion. In particular, we establish contractive multi-step MPC with and without reoptimization and compare it to classic MPC. The idea behind these approaches is to use the fs-CLF as running cost. These new design approaches are particularly relevant in situations where information exchange between plant and controller cannot be ensured at all time instants. An example shows the different behavior of the proposed controller design approaches. Copyright © 2019, The Authors. All rights reserved.

关键词： Model predictive control

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CrowdSim2: an Open Synthetic Benchmark for Object Detectors

arXiv

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arXiv 2023年

作者： Foszner, Pawel Szczęsna, Agnieszka Ciampi, Luca Messina, Nicola Cygan, Adam Bizon, Bartosz Cogiel, Michal Golba, Dominik Macioszek, Elżbieta Staniszewski, Michal Department of Computer Graphics Vision and Digital Systems Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology Gliwice Poland Institute of Information Science and Technologies National Research Council Pisa Italy QSystems.pro sp. z o.o. Mochnackiego 34 Bytom41-907 Poland Blees sp. z o.o. Zygmunta Starego 24a/10 Gliwice44-100 Poland Department of Transport Systems Traffic Engineering and Logistics Faculty of Transport and Aviation Engineering Silesian University of Technology Katowice Poland

Data scarcity has become one of the main obstacles to developing supervised models based on Artificial Intelligence in computer Vision. Indeed, Deep Learning-based models systematically struggle when applied in new scenarios never seen during training and may not be adequately tested in non-ordinary yet crucial real-world situations. This paper presents and publicly releases CrowdSim2, a new synthetic collection of images suitable for people and vehicle detection gathered from a simulator based on the Unity graphical engine. It consists of thousands of images gathered from various synthetic scenarios resembling the real world, where we varied some factors of interest, such as the weather conditions and the number of objects in the scenes. The labels are automatically collected and consist of bounding boxes that precisely localize objects belonging to the two object classes, leaving out humans from the annotation pipeline. We exploited this new benchmark as a testing ground for some state-of-the-art detectors, showing that our simulated scenarios can be a valuable tool for measuring their performances in a controlled environment. © 2023, CC BY.

关键词： Object detection

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Learning Multi-Frequency Partial Correlation Graphs

arXiv

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arXiv 2023年

作者： D’Acunto, Gabriele Di Lorenzo, Paolo Bonchi, Francesco Sardellitti, Stefania Barbarossa, Sergio The Department of Computer Control and Management Engineering Sapienza University of Rome 00185 Italy Centai Institute Turin Italy Barcelona Spain The Department of Information Engineering Electronics and Telecommunications Sapienza University of Rome Rome00184 Italy The Faculty of Engineering in Computer Science Universitas Mercatorum University of Italian Chambers of Commerce Rome00186 Italy

Despite the large research effort devoted to learning dependencies between time series, the state of the art still faces a major limitation: existing methods learn partial correlations but fail to discriminate across distinct frequency bands. Motivated by many applications in which this differentiation is pivotal, we overcome this limitation by learning a block-sparse, frequency-dependent, partial correlation graph, in which layers correspond to different frequency bands, and partial correlations can occur over just a few layers. To this aim, we formulate and solve two nonconvex learning problems: the first has a closed-form solution and is suitable when there is prior knowledge about the number of partial correlations;the second hinges on an iterative solution based on successive convex approximation, and is effective for the general case where no prior knowledge is available. Numerical results on synthetic data show that the proposed methods outperform the current state of the art. Finally, the analysis of financial time series confirms that partial correlations exist only within a few frequency bands, underscoring how our methods enable the gaining of valuable insights that would be undetected without discriminating along the frequency domain. Copyright © 2023, The Authors. All rights reserved.

关键词： Time series

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Notice of Retraction: Integrated Double Estimator Architecture for Reinforcement Learning

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IEEE Transactions on Cybernetics 2020年第5期52卷 1-12页

作者： Pingli Lv Xuesong Wang Yuhu Cheng Ziming Duan C. L. Philip Chen Engineering Research Center of Intelligent Control for Underground Space China University of Mining and Technology Xuzhou China School of Information and Electronics Engineering Jiangsu Vocational Institute of Architectural Technology Xuzhou China Faculty of Science and Technology the University of Macau Macau SAR 99999 China. He is now with the School of Computer Science and Engineering South China University of Technology Guangzhou 510006 China.

Retracted.

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Retrospective Vision of a Long Term Innovative Experience

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Procedia - Social and Behavioral sciences 2014年 141卷 15-19页

作者： Jose Manuel Lopez-Guede Manuel Graña Fernando Oterino Jesus Maria Larrañaga Department of Systems Engineering and Automatic Control University College of Engineering of Vitoria Basque Country University (UPV/EHU) Vitoria 01006 Spain Department of Computer Science and Artificial Intelligence Faculty of Informatics Basque Country University (UPV/EHU) San Sebastian 20018 Spain Department of Electronics University College of Engineering of Vitoria Basque Country University (UPV/EHU) Vitoria 01006 Spain Department of Business Management University College of Engineering of Vitoria Basque Country University (UPV/EHU) Vitoria 01006 Spain

The purpose of this paper is to look back on a long term informal innovative experience carried out during the last nine years until the present one, and try to discern, with a retrospective and a long time vision, whether it has been as beneficial as expected once it has concluded. This experience has taken place in the University College of Engineering of Vitoria (Basque Country University, Spain) since the year 2.004, and it has been accomplished in the subject Company Networks of Technical Engineering in Management Computing. After the analysis of a number of data collected along these years, we found that we have reached the initial objective of increasing the enrolment in the subject that has driven the project, and other unexpected ones that are more important from a long time point of view. Once that nine years have lapsed and the project is going to be finished, we conclude that it is a very positive experience and we recommend doing the same with the new degrees of the European Higher Education Area (EHEA), as we plan.

关键词： Company Networks Active Learning Educational Innovation Project Cooperative Learning

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Trends and Challenges of Sustainable Agriculture in the Iraqi Environment

Trends and Challenges of Sustainable Agriculture in the Iraq...

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Blockchain, Smart Healthcare and Emerging Technologies (SmartBlock4Health), IEEE International Conference on

作者： Hanan Hussein Al-asadi Maria Goga Haider Abdullah Ali Ramona Cristina Popa Awodele Oludele Faculty of Automatic Control and Computers University POLITEHNICA of Bucharest Bucharest Romania University of Technology-Iraq Baghdad Iraq UTCB Department for Training of Teaching Personnel Technical University of Civil Engineering of Bucharest Bucharest Romania Madenat Alelem University College Baghdad Iraq Faculty of Engineering in Foreign Languages University POLITEHNICA of Bucharest Bucharest Romania computer science department Babcock University Ogun State Nigeria

ISBN: (纸本)9781665460156

The use of Agriculture Intelligent Systems (AISs) in Iraq has become popular among farmers. The greenhouse is a solution for plant growth, which uses an effective microclimate to simulate seasons and to use alternative energy sources like solar, thermal, and photovoltaic systems for microclimate control. Greenhouses are considered a successful solution with developments and achievements in the technology of this field. However, problems like high costs, difficulties in installation and maintenance, or the need for some procedures should be considered. Because Iraq is close to the equator (3669 km), it receives sufficient solar power. It also has large areas available for the building of solar greenhouse systems. The farmers need an affordable and functional smart greenhouse to enable and encourage them to use the environment efficiently. We intend to develop low-cost, accurate, and easy-to-use greenhouse systems controlled by artificial intelligence algorithms. Farmers will be able to control the greenhouse by using simple commands. Machine learning algorithms provide real-time and effective analysis that could support farmers in decision-making and provide relevant data for researchers and policymakers. AISs algorithms can lead to a sustainable and productive agriculture system. The system can be used in Iraq with sufficient government support and subsidy.

关键词： Smart agriculture Machine learning algorithms Costs Green buildings Soil control systems Agriculture

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Investigating the origin of optical flares from the TeV blazar S4 0954+65

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Astronomy and Astrophysics 2023年 679卷

作者： Pandey, Ashwani Bachev, Rumen Czerny, Bozena Wiita, Paul J. Gupta, Alok C. Strigachev, Anton Popowicz, Adam Center for Theoretical Physics Polish Academy of Sciences Al. Lotnikov 32/46 Warsaw02-668 Poland Institute of Astronomy and NAO Bulgarian Academy of Sciences 72 Tsarigradsko Shosse Blvd. Sofia1784 Bulgaria Department of Physics The College of New Jersey 2000 Pennington Road EwingNJ08628-0718 United States Manora Peak Nainital263001 India Faculty of Automatic Control Electronics and Computer Science Akademicka 16 Gliwice44-100 Poland

Aims. We aim to investigate the extreme variability properties of the TeV blazar S4 0954+65 using optical photometric and polarisation observations carried out between 2017 and 2023 using three ground-based telescopes. Methods. We examined an extensive dataset comprised of 138 intraday (observing duration shorter than a day) light curves (LCs) of S4 0954+65 for flux, spectral, and polarisation variations on diverse timescales. For the variable LCs, we computed the minimum variability timescales. We investigated flux-flux correlations and colour variations to look for spectral variations on long (several weeks to years) timescales. Additionally, we looked for connections between optical R-band flux and polarisation degree. Results. We found significant variations in 59 out of 138 intraday LCs. We detected a maximum change of 0.58 ± 0.11 in V-band magnitude within ∼2.64 h and a corresponding minimum variability timescale of 18.21 ± 4.87 mins on 2017 March 25. During the course of our observing campaign, the source brightness changed by ∼4 magnitudes in V and R bands;however, we did not find any strong spectral variations. The slope of the relative spectral energy distribution was 1.37 ± 0.04. The degree of polarisation varied from ∼3% to 39% during our monitoring. We observed a change of ∼120 degrees in polarisation angle (PA) within ∼3 h on 2022 April 13. No clear correlation was found between optical flux and the degree of polarisation. Conclusions. The results of our optical flux, colour, and polarisation study provide hints that turbulence in the relativistic jet could be responsible for the intraday optical variations in the blazar S4 0954+65. However, the long-term flux variations may be caused by changes in the Doppler factor. © 2023 EDP sciences. All rights reserved.

关键词： Polarization

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A Design of 15 kW Switched Reluctance Motor for Electric Vehicle Applications

A Design of 15 kW Switched Reluctance Motor for Electric Veh...

引用

International Conference on Electrical Machines and Systems 2007(ICEMS2007)(第十届国际电机与系统会议)

作者： P. Jitkreeyarn K. Tungpimolrut S. Kachapornkul P. Somsiri Tadashi Fukao Akira Chiba Industrial Control and Automation Laboratory Section National Electronics and Computer Technology C Department of Electrical Engineering Faculty of Science and Technology Tokyo University of Science

In this paper, a design of the 3-phase, 6-stator-pole and 4-rotor-pole, 15 kW switched reluctance motor for the propulsion system of the electric vehicle is presented. Its performance such as the torque per volume and... 详细信息

关键词： Switched reluctance motor motor design electric vehicle

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Educational Innovation Project in the Field of Industrial Informatics

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Procedia - Social and Behavioral sciences 2014年 141卷 20-24页

作者： Jose Manuel Lopez-Guede Manuel Graña Jesus Maria Larrañaga Fernando Oterino Department of Systems Engineering and Automatic Control University College of Engineering of Vitoria Basque Country University (UPV/EHU) Vitoria 01006 Spain Department of Computer Science and Artificial Intelligence Faculty of Informatics Basque Country University (UPV/EHU) San Sebastian 20018 Spain Department of Business Management University College of Engineering of Vitoria Basque Country University (UPV/EHU) Vitoria 01006 Spain Department of Electronics University College of Engineering of Vitoria Basque Country University (UPV/EHU) Vitoria 01006 Spain

The objective of this paper is to describe an ongoing work that we are carrying out in the frame of an educational innovation project supported by the Education Advisory Service of the Vicerectorship for Teaching Quality and Innovation (University of the Basque Country, Spain). The project is driven by means of the subject of Industrial Informatics of the degree of Industrial Electronic Engineering and automatics (University College of Engineering of Vitoria, Basque Country University, Spain). The design of the project is based on the development of a collaborative work distributed among all the students of the subject, grouped in several teams or working groups. The work developed by each of those groups is complementary, and when all these parts of work are finished, all of them will fit together. The conclusion reached until this moment through the continuous tracking of the students is that there is an increased and more active attendance. Besides, the results reached by the students in different evaluations have improved those reached by means of the traditional paradigm of learning.

关键词： Industrial Informatics Active Learning Educational Innovation Project Cooperative Learning

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A 180-Degree Phase Difference Output of Wilkinson Power Divider Using Microstrip Parallel Coupled Lines

A 180-Degree Phase Difference Output of Wilkinson Power Divi...

引用

Conference on Power, Energy and Innovations (ICPEI)

作者： Pratya Phanomupatum Ravee Phromloungsri Rachata Tama Tiwat Pongthavornkamol Decha Wongpatsa Somchat Sonasang Department of Electronics Faculty Industrial Technology Nakhon Phanom University Nakhon Phanom Thailand Computer and Communication Engineering Faculty of Technology Udon Thani Rajabhat University Udon Thani Thailand Location and Automatic Identification System Research Team Communication and Network Research Group National Electronic and Computer Technology Center National Science and Technology Development Agency Pathumthani Thailand Electrical Elements and Wireless Devices Unit (EEWSU) Faculty Industrial Technology Nakhon Phanom University Nakhon Phanom Thailand

ISBN: (数字)9798350356779

ISBN: (纸本)9798350356786

The design of a 180° output phase difference Wilkinson power divider for L-band applications is detailed in this article. The Wilkinson power is generated through the utilization of the parallel coupler's phase shifter. To showcase the potential of the suggested power divider, an FR4 microwave substrate is fabricated with a narrow band of 1.6 GHz to accommodate radio astronomy systems. The insertion loss, return loss, and isolation loss for the power divider's difference phase are accurately simulated at the operational frequency.

关键词： Power dividers Technological innovation Microwave integrated circuits Radio astronomy Phase shifters Insertion loss Microwave circuits Microstrip Proposals Substrates

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