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Floor plan construction via anonymous Wi-Fi signal fragment matching

ICIC Express Letters, Part B: Applications 2014年第4期5卷 981-987页

作者： Zhou, Mu Tian, Zengshan Xu, Kunjie Tang, Xiaomou Wang, Zhuoran Chongqing Key Lab of Mobile Communications Technology School of Communication and Information Engineering Chongqing University of Posts and Telecommunications No. 2 Chongwen Road Nan'an Dist. Chongqing 400065 China Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong Graduate Telecommunications and Networking Program University of Pittsburgh PA 15260 United States

Floor plan construction is the basis for fingerprint-based localization and people's activity learning, especially in the environments where the geometrical map is not available or does not exist. To this end, we propose a new received signal strength (RSS) fragment matching approach to identify the location points (LPs) in floor plan as the overlapped pieces between the fragments. Then, by means of the Smith-Waterman alignment, each LP can be recognized as a winning path in scoring space. Finally, we use the Allen's interval algebra to assemble the time-stamped LPs into a floor plan in target area. The experiments with the actual Wi-Fi RSS measurements recorded in HKUST campus demonstrate that our proposed approach performs better than the conventional K-means clustering and spectral clustering in floor plan construction. © 2014 ICIC International.

关键词： Algebra

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Methods for Evaluating Medical Tests and Biomarkers

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Diagnostic and Prognostic Research 2017年第1期1卷 1-34页

作者： Gowri Gopalakrishna Miranda Langendam Patrick Bossuyt Mariska Leeflang Rob Scholten Anna Noel-Storr James Thomas Iain Marshall Byron Wallace Penny Whiting Clare Davenport Gowri GopalaKrishna Isabel de Salis Sue Mallett Robert Wolff Marie Westwood Jos Kleinen Richard Riley Gary Collins Hans Reitsma Karel Moons Antonia Zapf Katharina Kramer Annika Hoyer Oliver Kuss J. Ensor R. D. Riley J. J. Deeks E. C. Martin Gerta Rücker Martin Schumacher Susanne Steinhauser Joie Ensor Kym Snell Brian Willis Jon Deeks Thomas Debray Lavinia Ferrante di Ruffano Sian Taylor-Phillips Chris Hyde Stuart A. Taylor Gauraang Batnagar Lavinia Ferrante Di Ruffano Farah Seedat Aileen Clarke Sarah Byron Frances Nixon Rebecca Albrow Thomas Walker Carla Deakin Zhivko Zhelev Harriet Hunt Yaling Yang Lucy Abel James Buchanan Thomas Fanshawe Bethany Shinkins Laure Wynants Sabine Van Huffel Jan Verbakel Dirk Timmerman Ben Van Calster Aeliko Zwinderman Jason Oke Jack O’Sullivan Rafael Perera Brian Nicholson Hannah L. Bromley Tracy E. Roberts Adele Francis Denniis Petrie G. Bruce Mann Kinga Malottki Holly Smith Lucinda Billingham Alice Sitch Oke Gerke Mie Holm-Vilstrup Eivind Antonsen Segtnan Ulrich Halekoh Poul Flemming Høilund-Carlsen Bernard G. Francq Jac Dinnes Julie Parkes Walter Gregory Jenny Hewison Peter Selby Doug Altman William Rosenberg Julien Asselineau Paul Perez Aïssatou Paye Emilie Bessede Cécile Proust-Lima Christiana Naaktgeboren Joris de Groot Johannes Reitsma Anne Rutjes Emmanuel Ogundimu Jonathan Cook Yannick Le Manach Yvonne Vergouwe Romin Pajouheshnia Rolf Groenwold Karen Moons Linda Peelen Bavo De Cock Daan Nieboer Ewout W. Steyerberg Micael J. Pencina Jennifer Cooper Nick Parsons Chris Stinton Steve Smith Andy Dickens Rachel Jordan Alexandra Enocson David Fitzmaurice Peymane Adab Charles Boachie Gaj Vidmar Karoline Freeman Martin Connock Rachel Court Carl Moons Jessica Harris Zoe Plummer Barnaby Reeves Chris Rogers Andrew Mumford Kurtis Lee Veerle Verheyden Gianni D. Angelini Gavin J. Murphy Jeremy Huddy Melody Ni George Hanna Department of Clinical Epidemiology Biostatistics & Bioinformatics Academic Medical Center University of Amsterdam Amsterdam The Netherlands Department of Clinical Epidemiology and Biostatistics Academic Medical Center University of Amsterdam Amsterdam Netherlands Cochrane Netherlands Julius Center for Health Sciences and Primary Care University Medical Center Utrecht Utrecht Netherlands Cochrane Dementia and Cognitive Improvement Group University of Oxford Oxford UK EPPI-Centre Department of Social Science University College London London UK Division of Health and Social Care Research King’s College London London UK College of Computer and Information Science Northeastern University Boston USA University Hospitals Bristol NHS Foundation Trust School of Social and Community Medicine Bristol UK Institute of Applied Health Research University of Birmingham Birmingham UK School of Social and Community Medicine University of Bristol Bristol UK Kleijnen Systematic Reviews Ltd York UK Research Institute for Primary Care and Health Sciences Keele University Keele UK Centre for Statistics in Medicine Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK Julius Center for Health Sciences and Primary Care University Medical Center Utrecht Utrecht The Netherlands Cochrane Netherlands University Medical Center Utrecht Utrecht The Netherlands Julius Center for Health Sciences and Primary Care University Medical Center Utrecht 3584 CG Utrecht Netherlands Department of Medical Statistics University Medical Center Göttingen Göttingen Germany Institute for Biometry and Epidemiology German Diabetes Center Leibniz Institute for Diabetes Research at Heinrich Heine University Düsseldorf Germany Manchester Pharmacy School University of Manchester Manchester UK Institute for Medical Biometry and Statistics Faculty of Medicine and Medical Center – University of Freiburg Stefan-Meier-Str. 26 79104 Freiburg Germany

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Top challenges in the visualization of engineering tensor fields 4th

Top challenges in the visualization of engineering tensor fi...

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4th Meeting on Visualization and Processing of Tensors and Higher Order Descriptors for Multi-Valued Data, 2011

作者： Hlawitschka, Mario Hotz, Ingrid Kratz, Andrea Marai, G. Elisabeta Moreno, Rodrigo Scheuermann, Gerik Stommel, Markus Wiebel, Alexander Zhang, Eugene Department of Computer Science Leipzig University Leipzig Germany German Aerospace Center Braunschweig Germany Zuse Institute Berlin Berlin Germany Robotics Institute Carnegie Mellon University PittsburghPA15260 United States Linköping University Campus US Linköping58185 Sweden Saarland University Saarbruecken Germany Department of Electrical Engineering and Computer Sciences Coburg University of Applied Sciences Coburg Germany School of Electrical Engineering and Computer Science Oregon State University CorvallisOR97330 United States

ISBN: (纸本)9783642543005

In this chapter we summarize the top research challenges in creating successful visualization tools for tensor fields in engineering. The analysis is based on our collective experiences and on discussions with both domain experts and visualization practitioners. We find that creating visualization tools for engineering tensors often involves solving multiple different technical problems at the same time—including visual intuitiveness, scalability, interactivity, providing both detail and context, integration with modeling and simulation, representing uncertainty and managing multi-fields;as well as overcoming terminology barriers and advancing research in the mathematical aspects of tensor field processing. We further note the need for tools and data repositories to encourage faster advances in the field. Our interest in creating and proposing this list is to initiate a discussion about important research issues within the visualization of engineering tensor fields. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Visualization

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Implantable tissue regeneration system using electrical stimulation 18

Implantable tissue regeneration system using electrical stim...

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18th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2014

作者： Kim, Junghoon Cho, Tae Hyung Lee, Sung Eun Yang, Hoon Joo Eom, Kyungsik Kim, In Sook Hwang, Soon Jung Kim, Sung June Department of Electrical Engineering and Computer Science Seoul National University Korea Republic of Dental Research Institute Brain Korea 21 2nd Program for Craniomaxillofacial Life Science Seoul National University Korea Republic of Department of Oral and Maxillofacial Surgery School of Dentistry Brain Korea 21 2nd Program for Craniomaxillofacial Life Science Seoul National University Korea Republic of

ISBN: (纸本)9780979806476

We introduce three implantable tissue regeneration systems;an implantable cell graft culture system, an implantable electrical stimulation system for bone regeneration, and a liquid crystal polymer (LCP)-based bone regeneration device. These devices allow electrical stimulation to stem cell grafts under in vivo circumstances. After a cell culture using the implantable cell graft culture system, we obtained the results of the cell proliferation rate increase of 22% compared with the non-stimulated group. From a bone regeneration experiment using the implantable electrical stimulation system for bone regeneration, the stimulated group showed a higher bone volume by 260% compared with the non-stimulated group. © 14CBMS.

关键词： Stem cells

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Flexible triangular formation keeping of marine robotic vehicles using range measurements 19

Flexible triangular formation keeping of marine robotic vehi...

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19th IFAC World Congress on International Federation of Automatic Control, IFAC 2014

作者： Rego, Francisco Soares, Jorge M. Pascoal, António Aguiar, A. Pedro Jones, Colin Laboratory of Robotics and Systems in Engineering and Science Instituto Superior Técnico University of Lisbon Lisbon Portugal Department of Electrical and Computer Engineering Faculty of Engineering University of Porto Porto Portugal Institute of Mechanical Engineering School of Engineering École Polytechnique Fédérale de Lausanne Lausanne Switzerland Distributed Intelligent Systems and Algorithms Laboratory School of Architecture Civil and Environmental Engineering École Polytechnique Fédérale de Lausanne Lausanne Switzerland National Institute of Oceanography Dona Paula Goa India

ISBN: (纸本)9783902823625

This paper addresses the problem of keeping an autonomous marine vehicle in a moving triangular formation by regulating its position with respect to two leader vehicles. The follower vehicle has no prior knowledge of the path described by the leaders but has access to their heading angle and is able to measure inter-vehicle ranges. It is assumed that the distance between the leaders is constant and known. A control strategy is adopted that generates speed and heading commands so as to drive suitably defined along track and cross track errors to zero. The commands are used as input to local inner loops for yaw and speed control. The paper describes the algorithms derived for range-based control and assesses their performance in simulations using realistic models of the vehicles involved. Tests with three autonomous marine vehicles equipped with acoustic modems and ranging devices allow for the evaluation of the performance of the algorithms in a real-world situation. © IFAC.

关键词： Vehicle performance

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System design of two wheeler self-balanced vehicle

System design of two wheeler self-balanced vehicle

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Int'l Workshop on Mechatronics (MECATRONICS) , France-Japan & Europe-Asia Congress on and Research and Education in Mechatronics (REM)

作者： Sheikh Mohibul Islam Rumi Mehdi Fakid Hossain I.S.M. Shanamul Islam Md. Khalilur Rahman BRAC University Dhaka Dhaka District BD BRACU Robotics Research Lab School of Engineering and Computer Science BRAC University Dhaka Bangladesh

Any two wheeler vehicles usually cannot balance by itself when it is in rest or running at a lower speed. The purpose of this research is to make a vehicle that would be stable by itself in such situations and can be stabilized against any physical impact. Two heavy rotating disks with hub motors have been used here to develop the mechanism of compensating the tilt of the vehicle and get it stabilized. To measure the tilt angle, an android device has been used and then the angle of tilt has sent to a Bluetooth receiver which is connected with the vehicle. An android application has been developed which takes the tilt angle as input from its gyroscope and sends data to that receiver accordingly. This arduino controls the motor which has been used to control the tilt direction of both of the rotating disks according to the signal. This vehicle is designed to provide the safety that two wheeler vehicle does not have during an impact or at zero velocity. Hence, this research is aimed to design a safe, cost effective and fuel efficient self-balanced vehicle for third world countries like Bangladesh.

关键词： Wheels Safety Force Motorcycles Smart phones Gears

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Vibration control design for a flexible string with input saturation

Vibration control design for a flexible string with input sa...

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World Congress on Intelligent Control and Automation (WCICA)

作者： Wei He Chen Sun Shuzhi Sam Ge Robotics Institute and School of Automation Engineering University of Electronic Science and Technology of China Chengdu China Department of Electrical & Computer Engineering National University of Singapore Singapore Singapore

In this paper, we consider the vibration control problem of a flexible string system in the presence of input saturation. The dynamics of the string system are represented by the coupled partial differential equation (PDE) and ordinary differential equation (ODE). In order to suppress the transverse vibration of the flexible string system, boundary control is proposed by introducing a well-defined integral Lyapunov function. An auxiliary system is introduced to handle the effect of input saturation, and the proof for the existence and the uniqueness of the solution of the closed-loop system is presented. The exponential stability is achieved through rigorous analysis without any simplification of the dynamics. The results are illustrated with numerical simulations for verifying the control performance.

关键词： Vibrations Closed loop systems Boundary conditions Equations Stability analysis Educational institutions

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Semi-supervised Low-rank Representation for Image Representation with Label Constraint

Semi-supervised Low-rank Representation for Image Representa...

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2014年国际计算机科学与软件工程学术会议

作者： Chen-Xue YANG Mao YE Jiao BAO Chao ZHANG School of Computer Science and Engineering Center for RoboticsKey Laboratory for NeuroInformation o Marketing Execution Department ITHuaweiChengduP.R.China

LRR is a popular technique for learning an efficient representation of image information and is reported to have excellent performance in machine learning and computer ***,LRR is an unsupervised method and has poor applicability and performance in real scenarios because of lack of image *** this paper,we propose a novel semi-supervised approach for studying the lowest-rank representation among all the coefficient matrices that represent the images as linear combinations of the basis in the given dictionary,called semi-supervised Low-Rank Representation (semi-LRR),which incorporates the label information as an additional hard ***,we develop an optimization process in which the improvement of the discriminating power of the low rank decomposition is presented explicitly by adding the label information constraint.A semi-LRR graph is constructed to represent data structures for semi-supervised learning and the weights of edges in the graph is provided by seeking a low-rank and sparse *** experimental results show the effectiveness of semi-LRR in comparison to the state-of-the-art approaches.

关键词： Low-rank representation Semi-supervised learning Image representation

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The Curved Surface Visualization of the Expert Behavior for Skill Transfer Using Microsoft Kinect

The Curved Surface Visualization of the Expert Behavior for ...

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International Conference on Informatics in Control, Automation and robotics

作者： Kaoru Mitsuhashi Hiroshi Hashimoto Yasuhiro Ohyama School of Computer Science Tokyo University of Technology Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology

ISBN: (纸本)9781479979202

Method of teaching and inheriting for skill is almost oral. It is not quantitative but qualitative. Quantitative inheriting of skill is difficult. In this paper, after tracking of a subject's skill motion using Microsoft Kinect, a subject's motion is visualized as the curved surface. A curved surface is fitted in the positions of a subject's joint, or the direction of trajectories. Expert and beginner perform swimming and karate motion. After the motions are tracked, the trajectories of joints are transformed to a curved surface. The difference of an action between an expert and a beginner is extracted by investigating curvatures and form on the visualized curved surface. Therefore, we expected that technical skill is transferred easily.

关键词： Skill Transfer Microsoft Kinect B-spline Curve Surface Visualization Gradient Curvature Distribution Tracking Motion Experts and Beginner

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Design, analysis and simulation of biped running robot

Design, analysis and simulation of biped running robot

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IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： Jongwon Park Young Kook Kim Byungho Yoon Kyung-Soo Kim Soohyun Kim School of Mechanical Aerospace and Systems Engineering Korea Advanced Institute of Science and Technology Daejeon South Korea Robotics Program Korea Advanced Institute of Science and Technology Daejeon South Korea

Legged systems are potentially expected to have outstanding mobility. However, they have shown only modest levels of capability to traverse on flat ground. This paper introduces a biped robot inspired by the hind limbs of cats. We present the characteristics of the system and conduct a position analysis based on vector loop equations. Afterwards, the ground clearance and parallel movement of the robotic leg are shown. We present a speed equation in an effort to verify how the major parameters affect the speed. In addition, we explore control strategies for ground speed matching, acceleration, slip, and speed control. A dynamic simulation shows that the biped robot reached 13.31 leg lengths per second (9.3km/h). This biped robot with the speed equation and its control strategies allow us to understand legged locomotion and can show us how to improve the speed.

关键词： Legged locomotion Mathematical model Equations Acceleration Vectors Joints

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