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2012 8th International Conference on Natural Computation, ICNC 2012

作者： Wei, Wei Zuo, Min Liu, Zaiwen Wang, Jing Department of Automatic Control Computer and Information Engineering School Beijing Technology and Business University Beijing China National Engineering Research Center of Advanced Rolling University of Science and Technology Beijing China

ISBN: (纸本)9781457721311

In this article, synchronization of FitzHugh-Nagumo (FHN) neurons is considered. Adaptive controller based on active compensation is adopted to drive the slave neuron to track the master neuron. Sufficient condition for asymptotic stability of the close-loop system is derived. Numerical simulation results are given to confirm the adaptive controller is valid. © 2012 IEEE.

关键词： Neurons

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Identification of box-jenkins models using structured ARX models and nuclear norm relaxation

Identification of box-jenkins models using structured ARX mo...

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Universite Libre de Bruxelles

作者： Hjalmarsson, Hakan Welsh, James S. Rojas, Cristian R. Automatic Control Lab. ACCESS Linnaeus Centre KTH Royal Institute of Technology Sweden School of Electrical Engineering and Computer Science University of Newcastle Australia

ISBN: (纸本)9783902823069

In this contribution we present a method to estimate structured high order ARX models. By this we mean that the estimated model, despite its high order is close to a low order model. This is achieved by adding two terms to the least-squares cost function. These two terms correspond to nuclear norms of two Hankel matrices. These Hankel matrices are constructed from the impulse response coefficients of the inverse noise model, and the numerator polynomial of the model dynamics, respectively. In a simulation study the method is shown to be competitive as compared to the prediction error method. In particular, in the study the performance degrades more gracefully than for the Prediction Error Method when the signal to noise ratio decreases. © 2012 IFAC.

关键词： Impulse response

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Comparison of Corner Detector and Region Detector for Vision-Based SLAM

Comparison of Corner Detector and Region Detector for Vision...

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International Conference on control, Automation and Systems

作者： Byung-moon Jang Tae-jae Lee Dong-hoon Lee Kyung-min Han Dong-il "Dan" Cho Automation and Systems Research Institute (ASRI) and School of Electrical Engineering and Computer Science Seoul National University Kwanak-ku Seoul 151-742 Korea LG electronics Tech. Control Team HA Control R&D Lab Gassan R&D Campus 327-23 Gasan-dong Geumcheon-gu Seoul 153-802 Korea

ISBN: (纸本)9781479905492

This paper presents the performances of a corner detector and a region detector in vision-based Simultaneous Localization and Mapping (SLAM). In vision-based SLAM, a feature detection process for data-association is the first step. Therefore, the repeatability of a feature detector is important. Feature detectors are generally categorized as the region detector and the corner detector. There are conflicting research results for the repeatability of corner detectors and region detectors. This paper shows SLAM results using a corner detector and a region detector. Extended Kalman Filters (EKF) are used for implementing the two SLAM methods. The localization errors are evaluated quantitatively. From the experimental results, it is demonstrated that the comer detector is more efficient than the region detector for the work performed in this paper.

关键词： SLAM comer detector region detector blob vision

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Bandgap Enhancement: Bandgap control of the Oxygen‐Vacancy‐Induced Two‐Dimensional Electron Gas in SrTiO3(Adv. Mater. Interfaces 6/2014)

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Advanced Materials Interfaces 2014年第6期1卷

作者： Z. Q. Liu W. Lu S. W. Zeng J. W. Deng Z. Huang C. J. Li M. Motapothula W. M. Lü L. Sun K. Han J. Q. Zhong P. Yang N. N. Bao W. Chen J. S. Chen Y. P. Feng J. M. D. Coey T. Venkatesan Ariando NUSNNI‐Nanocore National University of Singapore 117411 Singapore Department of Physics National University of Singapore 117542 Singapore Department of Materials Science and Engineering National University of Singapore 117576 Singapore National University of Singapore (NUS) Graduate School for Integrative Sciences and Engineering 28 Medical Drive 117456 Singapore Center for Ion Beam Applications National University of Singapore 117542 Singapore Singapore Synchrotron Light Source (SSLS) National University of Singapore 5 Research Link 117603 Singapore School of Physics Trinity College Dublin 2 Ireland Department of Electrical and Computer Engineering National University of Singapore 117576 Singapore

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Estimation of linear systems using a Gibbs sampler

Estimation of linear systems using a Gibbs sampler

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Universite Libre de Bruxelles

作者： Wills, Adrian Schön, Thomas B. Lindsten, Fredrik Ninness, Brett School of Electrical Engineering and Computer Science University of Newcastle Callaghan NSW 2308 Australia Division of Automatic Control Linköping University SE-581 83 Linköping Sweden

ISBN: (纸本)9783902823069

This paper considers a Bayesian approach to linear system identification. One motivation is the advantage of the minimum mean square error of the associated conditional mean estimate. A further motivation is the error quantifications afforded by the posterior density which are not reliant on asymptotic in data length derivations. To compute these posterior quantities, this paper derives and illustrates a Gibbs sampling approach, which is a randomized algorithm in the family of Markov chain Monte Carlo methods. We provide details on a numerically robust implementation of the Gibbs sampler. In a numerical example, the proposed method is illustrated to give good convergence properties without requiring any user tuning. © 2012 IFAC.

关键词： Bayesian networks

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Parallel implementation of particle MCMC methods on a GPU

Parallel implementation of particle MCMC methods on a GPU

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Universite Libre de Bruxelles

作者： Henriksen, Soren Wills, Adrian Schön, Thomas B. Ninness, Brett School of Electrical Engineering and Computer Science University of Newcastle Callaghan NSW 2308 Australia Division of Automatic Control Linköping University SE-581 83 Linköping Sweden

ISBN: (纸本)9783902823069

This paper examines the problem of estimating the parameters describing system models of quite general nonlinear and multi-variable form. The approach is a computational one in which quantities that are intractable to evaluate exactly are approximated by sample averages from randomized algorithms. The main contribution is to illustrate the viability and utility of this approach by examining how high computational loads can be simply managed using commodity hardware. The proposed algorithms and solution architectures are profiled on concrete examples. © 2012 IFAC.

关键词： Graphics processing unit

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A UKF-based Estimation Strategy for Actuator Fault Detection of UASs

A UKF-based Estimation Strategy for Actuator Fault Detection...

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International Conference on Unmanned Aircraft Systems

作者： Xilin Yang Michael Warren Bilal Arain Ben Upcroft Felipe Gonzalez Luis Mejias Australian Research Center for Aerospace Automation (ARCAA) and Queensland University of Technology (QUT) Brisbane Australia School of Electrical Engineering and Computer Science QUT Brisbane Australia

ISBN: (纸本)9781479908158

This paper presents a recursive strategy for online detection of actuator faults on a unmanned aerial system (UAS) subjected to accidental actuator faults. The proposed detection algorithm aims to provide a UAS with the capability of identifying and determining characteristics of actuator faults, offering necessary flight information for the design of fault-tolerant mechanism to compensate for the resultant side-effect when faults occur. The proposed fault detection strategy consists of a bank of unscented Kalman filters (UKFs) with each one detecting a specific type of actuator faults and estimating corresponding velocity and attitude information. Performance of the proposed method is evaluated using a typical nonlinear UAS model and it is demonstrated in simulations that our method is able to detect representative faults with a sufficient accuracy and acceptable time delay, and can be applied to the design of fault-tolerant flight control systems of UASs.

关键词： Actuator Fault Detection

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Influences of non-isothermal atmospheric backgrounds on variations of gravity wave parameters

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science China(Technological sciences) 2012年第5期55卷 1251-1257页

作者： LIU Xiao ZHOU QiHou YUAN Wei XU JiYao State Key Laboratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of Sciences Beijing 100190China College of Mathematics and Information Science Henan Normal UniversityXinxiang 453007China School of Electrical Engineering Zhengzhou UniversityZhengzhou 450001China Electrical and Computer Engineering Department Miami UniversityOxfordOhioUSA

Because of the importance of gravity waves （GWs） in coupling different atmospheric regions, further studies are necessary to investigate the characteristics of GW propagation in a non-isothermal atmosphere. Using a nonlinear numerical model, we simulate the propagation of small amplitude GWs with various wavelengths in different non-isothermal atmospheres. Our re- sults show that the GW vertical wavelength undergoes sharp changes above the stratopause and mesopause region. Specifically for a GW with an initial vertical wavelength of 5 km, the seasonal background temperature structure difference at 50° latitude can cause the vertical wavelength to vary by -2 krn in the mesosphere and by as large as -4.5 km in the lower thermosphere. In addition, the GW paths exhibit great divergence in the height range of -65-110 kin. Our results also show that the variations of GW path, vertical wavelength and horizontal phase velocity are not synchronized in a non-isothermal atmosphere as in an isothermal atmosphere. Despite the fact that all GWs change their characteristics as they propagate upward in a non-isothermal atmosphere, the variations relative to the initial parameters at a reference height are similar for different initial vertical wavelengths. Our results indicate that the changing characteristics of a gravity wave in a non-isothermal atmosphere need to be considered when investigating the relationship of GWs at two different heights.

关键词： gravity wave non-isothermal atmosphere atmospheric coupling

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Universal formalism of Fano resonance

Universal formalism of Fano resonance

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第十二届全国磁性理论会议

作者： Liang Huang Ying-Cheng Lai Hong-Gang Luo Celso Grebogi Beijing Computational Science Research Center Beijing 100084 China Institute for Complex Systems and Mathematical Biology King's College University of Aberdeen Aberdeen AB24 3UE UK School of Electrical Computer and Energy EngineeringArizona State University Tempe Arizona 85287 USA School of Physical Science and Technology and Key Laboratory for Magnetism and Magnetic Materials of MOE Lanzhou University Lanzhou Gansu 730000 China

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Combined Measurement of the Higgs Boson Mass in pp Collisions at s=7 and 8 TeV with the ATLAS and CMS Experiments

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Physical Review Letters 2015年第19期114卷 191803-191803页

作者： G. Aad B. Abbott J. Abdallah O. Abdinov R. Aben M. Abolins O. S. AbouZeid H. Abramowicz H. Abreu R. Abreu Y. Abulaiti B. S. Acharya L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye A. A. Affolder T. Agatonovic-Jovin J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson G. Akimoto A. V. Akimov G. L. Alberghi J. Albert S. Albrand M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob G. Alimonti L. Alio J. Alison S. P. Alkire B. M. M. Allbrooke P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. Altheimer B. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi B. T. Amadio K. Amako Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso N. Amram G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi P. Anger A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi M. Antonelli A. Antonov J. Antos F. Anulli M. Aoki L. Aperio Bella G. Arabidze Y. Arai J. P. Araque A. T. H. Arce F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armbruster O. Arnaez V. Arnal H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Asai N. Asbah A. Ashkenazi B. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. B. Atlay B. Auerbach K. Augsten M. Aurousseau G. Avolio B. Axen M. K. Ayoub G. Azuelos M. A. Baak A. E. Baas C. Bacci H. Bachacou K. Bachas M. Backes M. Backhaus E. Badescu P. Bagiacchi P. Bagnaia Y. Bai T. Bain J. T. Baines O. K. Baker P. Balek T. Balestri F. Balli E. Banas Sw. Banerjee A. A. E. Bannoura H. S. Bansil L. Barak S. P. Baranov E. L. Barberio D. Barberis M. Barbero T. Barillari M. Barisonzi T. Barklow N. Barlow S. L. Barnes B. M. Barnett R. M. Barnett Z. Barnovska A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guimarães da Costa R. Bartoldus A. E. Barton P. Bartos A. Bassalat A. Basye R. L. Bates S. J. Batista J. R. Batley M. Battaglia M. Bauce F. Bauer H. S. Bawa J. B. Beach CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institute of Physics Academia Sinica Taipei Taiwan Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel CERN Geneva Switzerland Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton New York USA Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Laboratorio de Instrumentacao e Fisica Experimental de Particulas-LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada (Spain) Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Roma Italy Dipartimento di Fisica Università di Roma Tor Vergata Roma Italy Fysiska institutionen Lunds universitet Lund Sweden International Center for Elementary Particle Physics and Depart

A measurement of the Higgs boson mass is presented based on the combined data samples of the ATLAS and CMS experiments at the CERN LHC in the H→γγ and H→ZZ→4ℓ decay channels. The results are obtained from a simultaneous fit to the reconstructed invariant mass peaks in the two channels and for the two experiments. The measured masses from the individual channels and the two experiments are found to be consistent among themselves. The combined measured mass of the Higgs boson is mH=125.09±0.21 (stat)±0.11 (syst) GeV.

关键词： HIGGS bosons research COLLISIONS (Nuclear physics) ATLAS (computer program language) REST mass (Relativity) BOSONS

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