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Advances in Intelligent systems and Computing 2018年 620卷 v-vi页

作者： Omatu, Sigeru Rodríguez, Sara Villarrubia, Gabriel Faria, Pedro Sitek, Pawel Prieto, Javier Faculty of Engineering Department of Electronics Information and Communication Engineering Osaka Institute of Technology OsakaOsaka Japan Faculty of Science Department of Computer Science and Automation Control University of Salamanca Salamanca Spain GECAD – Research Group on Intelligent Engineering and Computing for Advanced Innovation and Development Instituto Superior de Engenharia do Porto Porto Portugal Faculty of Electrical Engineering and Computer Science Department of Control and Management Systems Department of Information Systems Kielce University of Technology Kielce Poland

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Universal spectra of random Lindblad operators

arXiv

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arXiv 2018年

作者： Denisov, Sergey Laptyeva, Tetyana Tarnowski, Wojciech Chruściński, Dariusz Życzkowski, Karol Department of Computer Science Oslo Metropolitan University OsloN-0130 Norway Department of Control Theory and Systems Dynamics Lobachevsky University Gagarina Av. 23 Nizhny Novgorod603950 Russia Marian Smoluchowski Institute of Physics Uniwersytet Jagielló nski Krakow Poland Institute of Physics Faculty of Physics Astronomy and Informatics Nicolaus Copernicus University Grudziadzka 5/7 Torun87–100 Poland Centrum Fizyki Teoretycznej PAN Warszawa Poland

To understand typical dynamics of an open quantum system in continuous time, we introduce an ensemble of random Lindblad operators, which generate Markovian completely positive evolution in the space of density matrices. Spectral properties of these operators, including the shape of the spectrum in the complex plane, are evaluated by using methods of free probabilities and explained with non-Hermitian random matrix models. We also demonstrate universality of the spectral features. The notion of ensemble of random generators of Markovian qauntum evolution constitutes a step towards categorization of dissipative quantum chaos. Copyright © 2018, The Authors. All rights reserved.

关键词： Continuous time systems

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Monitoring and control of the timber's drying process

Monitoring and control of the timber's drying process

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International Conference on Engineering of Modern Electric systems (EMES)

作者： Mircea Dulău Istvan Madaras Department of Electrical and Computer Engineering “Petru Maior” University Tîrgu-Mureş Romania Master at Automatic Systems of Industrial Process Control Faculty of Engineering “Petru Maior” University Tîrgu-Mureş Romania

The timber's drying process is a mandatory operation before any action of the wood processing. In the recent years, the fundamental research in the field of timber's drying has made progress, the physical laws regarding the removal of the water from the wood through different procedures (convection, vacuum, microwave etc.) being elucidated. The using of the calculus techniques allows the accurate simulation of heat and mass transfer phenomena, as well as of the mechanical aspects (internal stresses, deformations), which accompany the wood's drying process. The paper presents the implementation of the monitoring and the control system of the timber's conventional drying, using programmable controllers (Siemens), dedicated devices and dedicated software (Step 7).

关键词： Moisture Heating systems Monitoring Process control Fans Heat transfer

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Charged Particle Location Modeling Based Experiment Plan Acquisition Method

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Procedia computer Science 2017年 104卷 592-597页

作者： Normunds Kante Mykola Kryshchuk Jurijs Lavendels Riga Technical University Faculty of Computer Science and Information Technology Kaļķu street 1 Rīga LV – 1658 Latvia National Technical University of Ukraine (Kiev Polytechnic Institute) Department of Automation and Control in Technical Systems 37 Prospect Peremogy Kiev 03056 Ukraine

The method of obtaining the plan of experiments in multidimensional space is proposed. Our method is based on assumptions of uniform distribution of charged particles in infinite space. To receive the plan of experiments, the infinite multidimensional space is replaced with a hypercube whose surface models influence of infinite space. The software is developed and practical results, in two-dimensional space are acquired. There are no basic problems to carry out calculations in multidimensional space.

关键词： Experiment plan Charged particle interaction Latin hypercube

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A weighted-resampling based transfer learning algorithm

A weighted-resampling based transfer learning algorithm

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International Joint Conference on Neural Networks (IJCNN)

作者： Xiaobo Liu Zhentao Liu Guangjun Wang Zhihua Cai Harry Zhang School of Automation China University of Geosciences Wuhan China Hubei key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan China School of Computer Science China University of Geosciences Wuhan China Faculty of Computer Science University of New Brunswick NB Canada

ISBN: (纸本)9781509061839

Transfer learning has attracted more and more attention, and many scholars proposed some useful strategies. Boosting is the main strategy for transfer learning. In boosting, resampling is preferred over reweighting, and it can be applied to any base learner. In this paper, we propose a weighted-resampling method for transfer learning, called TrResampling. Firstly, resampling is applied to the data with heaven weight in the source domain, and the resampled data is used with the target data as the training data to build a classifier. Then the TrAdaBoost algorithm is used to adjust the weights of source data and target data. We discuss Decision Tree, Naive Bayes, and SVM as the base learner in TrResampling, and choose the suitable for TrResampling. In order to illustrate the performance of the proposed algorithm, we compare TrResampling with the state-of-the-art algorithm TrAdaBoost and the base learner Decision Tree, experimental results on UCI data sets indicate that TrResampling is superior to TrAdaBoost and Decision Tree on many data sets.

关键词： Training data Boosting Machine learning algorithms Support vector machines Decision trees Training Electronic mail

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Random asynchronous iterations in distributed coordination algorithms

arXiv

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arXiv 2018年

作者： Chen, Yao Xia, Weiguo Cao, Ming Lü, Jinhu Department of Computer Science Southwestern University of Finance and Economics Chengdu611130 China School of Control Science and Engineering Dalian University of Technology Dalian116024 China Faculty of Science and Engineering ENTEG University of Groningen Groningen9747 AG Netherlands School of Automation Science and Electrical Engineering State Key Laboratory of Software Development Environment Beijing Advanced Innovation Center for Big Data and Brain Computing Beihang University Beijing100191 China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing100190 China

Distributed coordination algorithms (DCA) carry out information processing processes among a group of networked agents without centralized information fusion. Though it is well known that DCA characterized by an SIA (stochastic, indecomposable, aperiodic) matrix generate consensus asymptotically via synchronous iterations, the dynamics of DCA with asynchronous iterations have not been studied extensively, especially when viewed as stochastic processes. This paper aims to show that for any given irreducible stochastic matrix, even non-SIA, the corresponding DCA lead to consensus successfully via random asynchronous iterations under a wide range of conditions on the transition probability. Particularly, the transition probability is neither required to be independent and identically distributed, nor characterized by a Markov chain. Copyright © 2018, The Authors. All rights reserved.

关键词： Stochastic systems

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Iterative Method for Solving a System of Linear Equations

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Procedia computer Science 2017年 104卷 133-137页

作者： Mykola Kryshchuk Jurijs Lavendels National Technical University of Ukraine (Kiev Polytechnic Institute) Department of Automation and Control in Technical Systems 37 Prospect Peremogy Kiev 03056 Ukraine Riga Technical University Faculty of Computer Science and Information Technology Kaļķu street 1 Rīga LV – 1658 Latvia

The systems of linear equations are a classic section of numerical methods which was already known BC. It reached its highest peak around 1600-1700 due to the public demand for solutions of technical and engineering tasks, nevertheless, it is still topical nowadays. This paper describes another iterative approach to solving linear systems, which is based in the multiple transfers of the solution proximity point towards the solution itself, simultaneously reducing the differences of all the system equations.

关键词： The systems of linear equations Iterative methods for solving systems of linear equations The requirements for the matrix of the equation system

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Constraining Lens Masses in Moderately to Highly Magnified Microlensing Events from Gaia

arXiv

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arXiv 2025年

作者： Pylypenko, U. Wyrzykowski, L. Mikolajczyk, P.J. Kotysz, K. Zieliński, P. Ihanec, N. Wicker, M. Ratajczak, M. Sitek, M. Howil, K. Jablońska, M. Kaczmarek, Z. Kruszyńska, K. Udalski, A. Damljanovic, G. Stojanovic, M. Jovanovic, M.D. Kvernadze, T. Kvaratskhelia, O. Zejmo, M. Brincat, S.M. Qvam, J.K.T. Güver, T. Bachelet, E. Rybicki, K.A. Garofalo, A. Hardy, L. Zdanavicius, J. Pakstiene, E. Zola, S. Kurowski, S. Reichart, D.E. Davidson, J.W. Burgaz, U. Rivet, J.P. Jelinek, M. Popowicz, A. Esenoglu, H.H. Sonbas, E. Carrasco, J.M. Awiphan, S. Tasuya, O. Godunova, V. Simon, A. Fukui, A. Galdies, C. Bakowska, K. Hofbauer, P. Gurgul, A. Joachimczyk, B. Dominik, M. Tsapras, Y. Street, R.A. Hundertmark, M. Bozza, V. Rota, P. Cassan, A. Wambsganss, J. Figuera Jaimes, R. Astronomical Observatory University of Warsaw Al. Ujazdowskie 4 Warsaw00-478 Poland Astrophysics Division National Centre for Nuclear Research Pasteura 7 Warsaw02-093 Poland Astronomical Institute University of Wroclaw ul. Mikolaja Kopernika 11 Wroclaw51-622 Poland Institute of Astronomy Faculty of Physics Astronomy and Informatics Nicolaus Copernicus University in Toruń Grudziadzka 5 Toruń87-100 Poland Faculty of Mathematics and Computer Science Jagiellonian University Lojasiewicza 6 Kraków30-348 Poland Research School of Astronomy and Astrophysics Australian National University Mount Stromlo Observatory Cotter Road Weston CreekACT2611 Australia Zentrum für Astronomie der Universität Heidelberg Astronomisches Rechen-Institut Mönchhofstr. 12-14 Heidelberg69120 Germany Las Cumbres Observatory Global Telescope Network 6740 Cortona Drive suite 102 GoletaCA93117 United States Astronomical Observatory Volgina 7 Belgrade11060 Serbia E.Kharadze Georgian National Astrophysical Observatory Abastumani0301 Georgia Janusz Gil Institute of Astronomy University of Zielona Góra Lubuska 2 Zielona GóraPL-65-265 Poland Flarestar Obsevatory Fl.5 Ent.B Silver Jubilee Apt George Tayar Street San GwannSGN 3160 Malta Horten Videregaende Skole Strandpromenaden 33 Horten3183 Norway Istanbul University Faculty of Science Department of Astronomy and Spaces Sciences Istanbul34119 Turkey Istanbul University Observatory Research and Application Center Istanbul University Istanbul34119 Turkey Department of Physics Adıyaman University Adıyaman02040 Turkey Department of Physics The George Washington University WashingtonDC20052 United States IPAC Mail Code 100-22 Caltech 1200 E. California Blvd. PasadenaCA91125 United States Department of Particle Physics and Astrophysics Weizmann Institute of Science Rehovot76100 Israel INAF-Osservatorio di Astrofisica e Scienza dello Spazio Via Gobetti 93/3 BolognaI-40129 Italy Department of Physics and Astronom

Context. Microlensing events provide a unique way to detect and measure the masses of isolated, non-luminous objects, particularly dark stellar remnants. Under certain conditions, it is possible to measure the mass of these objects using photometry alone, specifically when a microlensing light curve displays a finite-source (FS) effect. This effect generally occurs in highly magnified light curves, i.e. when the source and the lens are very well aligned. Aims. In this study, we analyse Gaia Alerts and Gaia Data Release 3 datasets, identifying four moderate-to-high-magnification microlensing events without a discernible FS effect. The absence of this effect suggests a large Einstein radius, implying substantial lens masses. Methods. In each event, we constrain the FS effect and therefore establish lower limits for angular Einstein radius and lens mass. Additionally, we use the DarkLensCode software to obtain mass, distance, and brightness distribution for the lens based on the Galactic model. Results. Our analysis established lower mass limits of ∼ 0.2 M☉ for one lens and ∼ 0.3 − 0.5 M☉ for two others. DarkLensCode analysis supports these findings, estimating lens masses in the range of∼ 0.42 − 1.66 M☉ and dark lens probabilities exceeding 60%. These results strongly indicate that the lenses are stellar remnants, such as white dwarfs or neutron stars. Conclusions. While further investigations are required to confirm the nature of these lenses, we demonstrate a straightforward yet effective approach to identifying stellar remnant candidates. © 2025, CC BY.

关键词： White dwarfs

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Comparison of three approaches to atmospheric source localization

Comparison of three approaches to atmospheric source localiz...

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作者： Abdelghaffar, Hossam M. Woolsey, Craig A. Rakha, Hesham A. Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University BlacksburgVA24060 United States Department of Computers and Control Systems Faculty of Engineering Mansoura University 60 El Gomhoria Street Mansoura Dakahlia35516 Egypt Department of Aerospace and Ocean Engineering Virginia Polytechnic Institute and State University BlacksburgVA24060 United States Department of Civil and Environmental Engineering Virginia Polytechnic Institute and State University BlacksburgVA24060 United States

The paper describes three methods for finding the source of an airborne contaminant in a turbulent wind field. Weassume that an unmanned aircraft samples the atmosphere at a constant altitudewithin the planetary boundary layer, measuring the contaminant concentration. The turbulent wind field is generated using the openly available software TurbSim. A concentration field, or plume, is created by advection and diffusion of the contaminant from its source. The plume is modeled using a filament-based method proposed in the literature. The unmanned aircraft is assumed to sample the concentration field quickly, relative to the plume dynamics;once the plume has matured, the concentration is fixed and the sampling strategy is executed. A recursive Bayesian estimation approach is compared with a gradient descent algorithm and an extended Kalman filter. By comparison, Bayesian estimation requires relatively weak modeling assumptions, and simulation results suggest this approach is less sensitive to error in the initial state. Copyright © 2016 by the American Institute of Aeronautics and Astronautics, Inc.

关键词： Boundary layers

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Electromagnetic compatibility tests of a measuring system based on MFC piezoelectric transducers

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IOP Conference Series: Materials Science and Engineering 2018年第2期400卷

作者： M Placzek M Mackowski Silesian University of Technology Faculty of Mechanical Engineering Institute of Engineering Processes Automation and Integrated Manufacturing Systems Konarskiego 18A 44-100 Gliwice Poland Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science Institute of Informatics Akademicka 16 44-100 Gliwice Poland

This paper discusses the issue of dependability of a measuring system from the electromagnetic compatibility (EMC) point of view. During the tests, the equipment for conducting electromagnetic compatibility tests was used. The tests were carried out in accordance with the EMC Directive 2014/30/EU and the harmonized standard IEC 61000-4-6. The measuring system equipped with non-classical piezoelectric transducers called MFC was considered. The MFC transducer was used as a sensor connected to the NI 9191 CompactDAQ Chassis. During the research, the influence of conducted disturbances on the transmission wire was examined. One of the elements of the test bench was an EM-clamp (providing both inductive and capacitive coupling) consisting of a tube of split ferrite rings of two different grades, which can be clamped over the cable under test in a non-invasive way.

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