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Experiments and simulations of the standing wave acoustic field produced by two transducers mounted in contraposition

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Proceedings of Meetings on Acoustics 2017年第1期32卷

作者： Huijuan Dong Longfei Jia Yingzi Guan Jie Zhao 1School of Mechatronics Engineering Harbin Institute of Technology Harbin Hei Longjiang 150001 CHINA dhj@*** 2Chongqing Vocational College of Transportation Chongqing CHINA ***@*** 3School of Astronautics Harbin Institute of Technology Harbin Hei Longjiang 150001 CHINA guanyz@*** 4The State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Hei Longjiang 150001 CHINA jzhao@***

Acoustic standing wave levitation transmission technique has been widely used in many research areas. In this work, two Langevin-type piezoelectric transducers’ output are assembled face to face at a certain angle. Each transducer’s output acts as both its radiator and another transducer’s reflector. The authors termed it as contraposition transducer array. Standing acoustic wave in the cavity between the radiator and the reflector is formed when optimizing the angle between the central lines of the two transducers, the distance of the cavity, and the phase differential of the generator being used to excite the two transducers. Accordingly, the object during the acoustic field can be levitated, moved and manipulated. Not only the standing acoustic field pressure is theoretically derived, but also its potential location is Ansys-programmed simulated and illustrated. As a result, the restrictions are detailed which are necessary to form the standing acoustic wave. The corresponding experiments are carried out to demonstrate the proposed method by the authors. Finally, the influences of geometrical parameters and exciting phase differential on the formed acoustic field are numerically simulated.

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Constructing numerical solutions to a nonlinear heat conduction equation with boundary conditions degenerating at the initial moment of time

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AIP Conference Proceedings 2016年第1期1785卷

作者： L. F. Spevak A. L. Kazakov 1Institute of Engineering Science UB RAS Ekaterinburg Russia 2Institute for System Dynamics and Control Theory SB RAS Irkutsk Russia

This paper deals with one-dimensional boundary value problems for a non-linear heat conduction equation with a power dependence of the heat conductivity coefficient on temperature. New solution algorithms are constructed for the instances of boundary conditions degenerating at the initial time moment. A comparison of the obtained solutions with known exact solutions shows the effectiveness of the proposed algorithms.

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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Surgical data science: Enabling next-generation surgery

arXiv

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arXiv 2017年

作者： Maier-Hein, Lena Vedula, Swaroop Speidel, Stefanie Navab, Nassir Kikinis, Ron Park, Adrian Eisenmann, Matthias Feussner, Hubertus Forestier, Germain Giannarou, Stamatia Hashizume, Makoto Katic, Darko Kenngott, Hannes Kranzfelder, Michael Malpani, Anand März, Keno Neumuth, Thomas Padoy, Nicolas Pugh, Carla Schoch, Nicolai Stoyanov, Danail Taylor, Russell Wagner, Martin Hager, Gregory D. Jannin, Pierre Heidelberg Germany Malone Center for Engineering in Healthcare Johns Hopkins University BaltimoreMD United States Institute for Anthropomatics and Robotics Karlsruhe Institute of Technology Karlsruhe Germany Chair for Computer Aided Medical Procedures Technical University of Munich Munich Germany Department of Radiology Brigham and Women’s Hospital Harvard Medical School BostonMA United States Department of Computer Science University of Bremen Bremen Germany Fraunhofer MEVIS Bremen Germany Department of Surgery Center of Anne Arundel Health System AnnapolisMD United States Department of Surgery Klinikum rechts der Isar Technical University of Munich Munich Germany Department of Computer Science University of Haute-Alsace Mulhouse France Hamlyn Centre for Robotic Surgery Imperial College London United Kingdom Department of Advanced Medical Initiatives Graduate School of Medical Sciences Kyushu University Fukuoka Japan Department for General Visceral and Transplant Surgery Heidelberg University Hospital Heidelberg Germany Department of Computer Science Johns Hopkins University BaltimoreMD United States University of Leipzig Leipzig Germany ICube University of Strasbourg CNRS IHU Strasbourg France Department of Surgery University of Wisconsin MadisonWI United States IWR Heidelberg University Heidelberg Germany Department of Computer Science University College London London United Kingdom Université de Rennes 1 Rennes France INSERM Rennes France

Future advances in surgical care require, to a greater and greater extent, a close partnership between caregivers, patients, technology, and information systems. As part of the move towards personalized medicine, interventional care will increasingly transform from an artisanal craft based on physicians’ individual experiences, preferences and traditions into a discipline that relies on objective decision-making based on large-scale data from heterogeneous sources. Copyright © 2017, The Authors. All rights reserved.

关键词： Surgery

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25th Annual Computational Neuroscience Meeting CNS-2016, Seogwipo City, South Korea, July 2-7, 2016 Abstracts

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BMC NEUROSCIENCE 2016年第1期17卷 1-112页

作者： [Anonymous] Computational Neurobiology Laboratory The Salk Institute for Biological Studies San Diego USA UNIC CNRS Gif sur Yvette France The European Institute for Theoretical Neuroscience (EITN) Paris France ATR Computational Neuroscience Laboratories Kyoto Japan Krembil Research Institute University Health Network Toronto Canada Department of Physiology University of Toronto Toronto Canada Department of Medicine (Neurology) University of Toronto Toronto Canada Department of Physics University of New Hampshire Durham USA Department of Neurophysiology Nencki Institute of Experimental Biology Warsaw Poland Department of Theory Wigner Research Centre for Physics of the Hungarian Academy of Sciences Budapest Hungary Department of Mathematical Sciences KAIST Daejoen Republic of Korea Department of Mathematics University of Houston Houston USA Department of Biochemistry & Cell Biology and Institute of Biosciences and Bioengineering Rice University Houston USA Department of Biology and Biochemistry University of Houston Houston USA Grupo de Neurocomputación Biológica Dpto. de Ingeniería Informática Escuela Politécnica Superior Universidad Autónoma de Madrid Madrid Spain Department of Biological Sciences University of Southern California Los Angeles USA Center for Neuroscience Korea Institute of Science and Technology Seoul South Korea Department of Neurology Albert Einstein College of Medicine Bronx USA Center for Neuroscience KIST Seoul South Korea Department of Neuroscience University of Science and Technology Daejon South Korea Systems Neuroscience Group QIMR Berghofer Medical Research Institute Herston Australia Department of Psychology Yonsei University Seoul South Korea Department of Psychiatry Kyung Hee University Hospital at Gangdong Seoul South Korea Department of Psychiatry Veterans Administration Boston Healthcare System and Harvard Medical School Brockton USA Department of Electrical and Electronic Engineering The University of Melbourne Parkvil

A1 Functional advantages of cell-type heterogeneity in neural circuits Tatyana O. Sharpee A2 Mesoscopic modeling of propagating waves in visual cortex Alain Destexhe A3 Dynamics and biomarkers of mental disorders Mitsuo Kawato F1 Precise recruitment of spiking output at theta frequencies requires dendritic h-channels in multi-compartment models of oriens-lacunosum/moleculare hippocampal interneurons Vladislav Sekulić, Frances K. Skinner F2 Kernel methods in reconstruction of current sources from extracellular potentials for single cells and the whole brains Daniel K. Wójcik, Chaitanya Chintaluri, Dorottya Cserpán, Zoltán Somogyvári F3 The synchronized periods depend on intracellular transcriptional repression mechanisms in circadian clocks. Jae Kyoung Kim, Zachary P. Kilpatrick, Matthew R. Bennett, Kresimir Josić O1 Assessing irregularity and coordination of spiking-bursting rhythms in central pattern generators Irene Elices, David Arroyo, Rafael Levi, Francisco B. Rodriguez, Pablo Varona O2 Regulation of top-down processing by cortically-projecting parvalbumin positive neurons in basal forebrain Eunjin Hwang, Bowon Kim, Hio-Been Han, Tae Kim, James T. McKenna, Ritchie E. Brown, Robert W. McCarley, Jee Hyun Choi O3 Modeling auditory stream segregation, build-up and bistability James Rankin, Pamela Osborn Popp, John Rinzel O4 Strong competition between tonotopic neural ensembles explains pitch-related dynamics of auditory cortex evoked fields Alejandro Tabas, André Rupp, Emili Balaguer-Ballester O5 A simple model of retinal response to multi-electrode stimulation Matias I. Maturana, David B. Grayden, Shaun L. Cloherty, Tatiana Kameneva, Michael R. Ibbotson, Hamish Meffin O6 Noise correlations in V4 area correlate with behavioral performance in visual discrimination task Veronika Koren, Timm Lochmann, Valentin Dragoi, Klaus Obermayer O7 Input-location dependent gain modulation in cerebellar nucleus neurons Maria Psarrou, Maria Schilstra, Neil Davey, Benjamin Torben-Ni

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LQR problem of linear discrete time systems with nonnegative state constraints

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AIP Conference Proceedings 2015年第1期1684卷

作者： S. Kostova L. Imsland I. Ivanov 1Institute of System Engineering and Robotics Bulgarian Academy of Sciences Sofia Bulgaria 2Department of Engineering Cybernetics NTNU Trondheim Norway 3Department of Statistics and Econometrics FEBA St. Kliment Ohridski University of Sofia Bulgaria

In the paper the infinite-horizon Linear Quadratic Regulator (LQR) problem of linear discrete time systems with non-negative state constraints is presented. Such kind of constraints on the system determine the class of positive systems. They have big application in many fields like economics, biology, ecology, ICT and others. The standard infinite LQR-optimal state feedback law is used for solving the problem. In order to guarantee the nonnegativity of the system states, we define the admissible set of initial states. It is proven that, for each initial state from this set the nonnegative orthant is invariant set. Two cases are considered, first, when the initial state belongs to the admissible set, and the second, when the initial state does not belong to the admissible set. The procedures for solving the problem are given for two cases. In second case we use a dual-mode approach for solving the problem. The first mode is until the state trajectory enters the admissible set and after that the procedure for the first case is used. The illustrative examples are given for both cases.

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Publisher’s Note: “Effect of pressure on the structural properties of Li[Li0.1Ni0.35Mn0.55]O2” [AIP Advances 5, 047106 (2015)]

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AIP Advances 2015年第4期5卷

作者： Yufeng Zhang Li Wang Juping Yang Xiangming He Jixian Wang Yanli Zhang Yuhong Jin Yanchun Li Lun Xiong 1Institute of Nuclear & New Energy Technology Tsinghua University Beijing 100084 China 2Huadong Institute of Lithium Ion Battery Zhangjiagang Jiangsu 215600 China 3Key Laboratory of Solar Thermal Energy and Photovoltaic System Institute of Electrical Engineering Chinese Academy of Sciences No. 6 Beiertiao Zhongguangcun Beijing 100190 China 4Institute of High Energy Physics Chinese Academy of Science Beijing 100049 China

This article was originally published online on 7 April 2015. As originally published, the second author’s name Li Wang appeared incorrectly. The authors’ names

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Gene Therapy: Magnetic Helical Microswimmers Functionalized with Lipoplexes for Targeted Gene Delivery (Adv. Funct. Mater. 11/2015)

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Advanced Functional Materials 2015年第11期25卷

作者： Famin Qiu Satoshi Fujita Rami Mhanna Li Zhang Benjamin R. Simona Bradley J. Nelson Institute of Robotics and Intelligent System (IRIS) ETH Zurich Zurich CH‐8092 Switzerland Biomedical Research Institute AIST 1‐1‐1 Higashi Tsukuba Ibaraki 305‐8566 Japan Laboratory of Biosensors and Bioelectronics University and ETH Zurich Zurich CH‐8092 Switzerland Biomedical Engineering American University of Beirut Beirut 1107 2020 Lebanon Department of Mechanical and Automation Engineering The Chinese University of Hong Kong Hong Kong SAR China Chow Yuk Ho Technology Centre for Innovative Medicine The Chinese University of Hong Kong Hong Kong SAR China

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Haptic interfaces for the rescue walking robots motion in the disaster areas

Haptic interfaces for the rescue walking robots motion in th...

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UKACC International Conference on Control (CONTROL)

作者： Luige Vladareanu Octavian Melinte Adrian Bruja Hongbo Wang Xiaojie Wang Shuang Cang Hongnian Yu Zeng-Guang Hou Xiao-Liang Xie Robotics and Mechatronics Department Institute of Solid Mechanics C-tin Mille 15 Bucharest 1 ROMANIA School of Design Engineering and Computing Boumemouth University Poole Dorset UK Parallel Robot and Mechatronic System Laboratory of Hebei Province University Qinhuangdao CHINA State Key Laboratory of Management and Control for Complex Systems Beijing P.R.CHINA

In the recent years haptic interfaces became a reliable solution in order to solve problems which arise when humans interact with the environment. If in the research area of the haptic interaction between human and environment there are important researches, a innovative approach for the interaction between the robot and the environment using haptic interfaces and virtual projection method is presented in this paper. In order to control this interaction we used the Virtual Projection Method where haptic control interfaces of impedance and admittance will be embedded. The obtained results, validated by simulations assure stability, stiffness, high maneuverability and adaptability for rescue walking robots in order to move in disaster, dangerous and hazardous areas.

关键词： Haptic interfaces Legged locomotion Robot sensing systems Impedance Force

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Observability analysis of 2D single beacon navigation in the presence of constant currents for two classes of maneuvers

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IFAC Proceedings Volumes 2013年第33期46卷 227-232页

作者： Naveena Crasta Mohammadreza Bayat A. Pedro Aguiar António M. Pascoal Institute for Automation and System Engineering Technical University of Ilmenau Ilmenau 98694 Germany Laboratory of Robotics and Systems in Engineering and Science (LARSyS) IST/University of Lisbon Av. Rovisco Pais 1 1049-001 Lisbon Portugal Faculty of Engineering University of Porto (FEUP) Rua Dr. Roberto Frias s/n 4200-465 Porto Portugal Adjunct Scientist National Institute of Oceanography (NIO) Goa India

We analyze the observability properties of an underwater vehicle (moving in 2D) performing single beacon navigation for two specific classes of maneuvers, whereby the vehicle measures its distance to a fixed transponder located at a known position using an acoustic ranging device. We show that in the presence of known ocean currents, the system is found to be globally observable for constant relative course and constant (nonzero) relative course rate inputs in the sense of Herman and Krener. On the other hand, with unknown ocean currents the system fails to be locally weakly observable with constant relative course but we characterize the set of indistinguishable states from a given initial position and ocean current configuration. Interestingly, observability can be achieved with constant (nonzero) relative course rate in the presence of unknown, constant ocean currents.

关键词： Single beacon navigation Range-only measurement Set of indistinguishable states Observability

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