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IEEE Annual Conference on Pervasive Computing and Communications Workshops (PerCom)

作者： Paula Tarrío Matteo Cesana Marco Tagliasacchi Alessandro Redondi Luca Borsani José R. Casar Data Processing and Simulation Group Universidad Politécnica de Madrid Madrid Spain Dipartimento di Elettronica e Informazione Politecnico di Milano Milan Italy

We propose an optimization-based framework to minimize the energy consumption in a sensor network when using an indoor localization system based on the combination of received signal strength (RSS) and pedestrian dead reckoning (PDR). The objective is to find the RSS localization frequency and the number of RSS measurements used at each localization round that jointly minimize the total consumed energy, while ensuring at the same time a desired accuracy in the localization result. The optimization approach leverages practical models to predict the localization error and the overall energy consumption for combined RSS-PDR localization systems. The performance of the proposed strategy is assessed through simulation, showing energy savings with respect to other approaches while guaranteeing a target accuracy.

关键词： Accuracy Energy consumption Mobile communication Dead reckoning Accelerometers Energy measurement Trajectory

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LAURA — LocAlization and Ubiquitous monitoRing of pAtients for health care support

LAURA — LocAlization and Ubiquitous monitoRing of pAtients ...

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Workshops (PIMRC Workshops)

作者： Alessandro Redondi Marco Tagliasacchi Matteo Cesana Luca Borsani Paula Tarrío Fabio Salice Dipartimento di Elettronica e lnformazione Politecnico di Milano Milano Italy Data Processing and Simulation Group Universidad Politécnica de Madrid Madrid Spain

This works illustrates the LAURA system, which performs localization, tracking and monitoring of patients hosted at nursing institutes by exploiting a wireless sensor network based on the IEEE 801.15.4 (Zigbee) standard. We focus on the indoor personal localization module, which leverages a method based on received signal strength measurements, together with a particle filter to perform tracking of moving patients. We discuss the implementation and dimensioning of the localization and tracking system using commercial hardware, and we test the LAURA system in real environment, both with static and moving patients, achieving an average localization error lower than 2 m in 80% of the cases. The data sets containing the real measurements of received signal strengths collected during the experiments are made publicly available to enable reproducible research.

关键词： Wireless sensor networks Sensors Medical services Accuracy Atmospheric measurements Particle measurements Monitoring

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A System to Enable Level-of-Detail Mobile Interaction with Augmented Media Objects

A System to Enable Level-of-Detail Mobile Interaction with A...

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International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing (IMIS)

作者： David Gómez Ana M. Bernardos José R. Casar Data Processing and Simulation Group Telecommunications School of the Technical University of Madrid Madrid Spain Telecommun. Sch. Tech. Univ. of Madrid Madrid Spain

This paper presents a service concept that enables the virtual augmentation of physical objects through a mobile device. Each object is linked to a tree of virtual resources (e.g. digital contents). Resources are organized in levels-of-detail that depend on the user's distance and orientation towards the object itself (i.e. user's attitude). The root node of the content tree hosts a set of items that can be retrieved from the most distant position to the object, each depth level in the tree is associated to the observer's attitude towards the object, thus the structure facilitates 'spatial browsing' of information. On this concept, we have implemented an indoor sensor-based Augmented Reality system that relies on a RFID positioning mat for positioning. To complete the attitude calculation and to adjust the service interface, we have handled typical indoor problems such as compass calibration and its bias management. The service has been instantiated to augment a TV set to spatially browse geography contents, the content tree is organized in continent, country and city levels and delivers synchronized resources to the mobile interface and to the TV, depending on the user's attitude and its previous interactions. Results of a limited user test show that the service concept is acceptable to the users and underline the need to get better control of resources representation. Although the chosen object for demonstration is a media one, the concept is applicable to any kind of object.

关键词： TV Mobile communication Media Calibration Mobile handsets Compass Visualization

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Advances in Intelligent and Soft Computing: Preface

Advances in Intelligent and Soft Computing

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Advances in Intelligent and Soft Computing 2012年 151 AISC卷 V-VI页

作者： Omatu, Sigeru De Paz Santana, Juan F. González, Sara Rodríguez Molina, Jose M. Bernardos, Ana M. Rodríguez, Juan M. Corchado Graduate School of Engineering Osaka Prefecture University Sakai Osaka Japan Department of Computer Science Faculty of Science University of Salamanca Salamanca Spain Applied Artificial Intelligence Group Universidad Carlos III de Madrid Colmenarejo Madrid Spain Data Processing and Simulation Group ETSI. Telecomunicación Universidad Politécnica de Madrid Madrid Spain

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Distributed Computing and Artificial Intelligence 1

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丛书名： Advances in Intelligent and Soft Computing

1000年

作者： Sigeru Omatu Juan F. De Paz Santana Sara Rodríguez González Jose M. Molina Ana M. Bernardos Juan M. Corchado Rodríguez

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Impact of data-link on ground-based trajectory prediction accuracy for continuous descent arrivals

Impact of data-link on ground-based trajectory prediction ac...

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AIAA Modeling and simulation Technologies (MST) Conference

作者： Bronsvoort, Jesper McDonald, Greg Boucquey, Jean Avello, Carlos Garcia Vilaplana, Miguel Besada, Juan Alberto Airservices Australia Future Service Delivery GPO Box 1093 Melbourne VIC 3043 Australia EUROCONTROL Rue de la Fusée 96 Brussels 1130 Belgium EUROCONTROL Brussels 1130 Belgium Air Traffic Management Technologies Boeing Research and Technology Europe Avenida Sur Aeropuerto de Barajas 38 Edif. 4 Piso 4 Madrid 28042 Spain Universidad Politécnica de Madrid Data Processing and Simulation Group Despacho C-321 ETSI Telecomunicación Avenida Complutense 30 Madrid 28040 Spain

The purpose of this paper is to assess the improvements in trajectory prediction accuracy that result from enhancing the quality of the input data and supporting models of a groundbased Trajectory Predictor (TP). Focus is on the prediction of continuous descent trajectories where improvements to the quality of TP input data and models have been applied in a step by step manner in order to analyse the sensitivity of the prediction accuracy to each of the enhancements. As a first static enhancement aircraft intent within the Terminal Area is accurately modelled with use of the Aircraft Intent Description Language (AIDL) based on standard arrival and airline procedures. The dynamic enhancements are related to information likely to become available to ground-based systems through future flight planning and data-link standards like the Flight Information eXchange Model (FIXM) and Automatic Dependent Surveillance Contract (ADS-C) Extended Predicted Profile (EPP) respectively. This information includes descent speed schedule, aircraft mass, and geometric descent profile. The study used data from actual continuous descents performed by Future Air Navigation Systems (FANS) 1/A data-link equipped aircraft into Melbourne, Australia. While the current FANS-1/A standard does not directly provide information as descent speed schedule and mass as part of the down-linked trajectory information from the Flight Management System (FMS), these parameters were successfully inferred. Results indicated that descent speed schedule is most significant for temporal accuracy;the additional use of the aircraft mass mainly improved the prediction of the Top of Descent position. A technique was demonstrated to fully synchronise the geometric descent profile between air and ground predicted trajectories, while also improving on the prediction of the time dimension with respect to the original down-linked data from the FMS. While future data-link standards as EPP will provide key information as de

关键词： Air navigation

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Evaluation of Methods to Characterize the Change of the Respiratory Sinus Arrhythmia with Age in Sleep Apnea Patients

Evaluation of Methods to Characterize the Change of the Resp...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： John F Morales Margot Deviaene Javier Milagro Dries Testelmans Bertien Buyse Rik Willems Michele Orini Sabine Van Huffel Raquel Bailόn Carolina Varon ESAT - STADIUS Stadius Centre for Dynamical Systems Signal Processing and Data Analytics and with IMEC KU Leuven Leuven Belgium Biomedical Signal Interpretation and Computational Simulation (BSICoS) group University of Zaragoza Zaragoza Spain Department of Pneumology UZ Leuven Leuven Belgium Department of Cardiology UZ Leuven Leuven Belgium Barts Heart Centre St Bartholomews Hospital University College London London U.K

The High Frequency (HF) band of the power spectrum of the Heart Rate Variability (HRV) is widely accepted to contain information related to the respiration. However, it is known that this often results in misleading estimations of the strength of the Respiratory Sinus Arrhythmia (RSA). In this paper, different approaches to characterize the change of the RSA with age, combining HRV and respiratory signals, are studied. These approaches are the bandwidths in the power spectral density estimations, bivariate phase rectified signal averaging, information dynamics, a time-frequency representation, and a heart rate decomposition based on subspace projections. They were applied to a dataset of sleep apnea patients, specifically to periods without apneas and during NREM sleep. Each estimate reflected a different relationship between RSA and age, suggesting that they all capture the cardiorespiratory information in a different way. The comparison of the estimates indicates that the approaches based on the extraction of respiratory information from HRV provide a better characterization of the age-dependent degradation of the RSA.

关键词： Heart rate variability Sleep apnea Estimation Time-frequency analysis Entropy Bandwidth

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ASYNCHRONOUS TRANSFER MODE (ATM) OPERATION VIA SATELLITE - ISSUES, CHALLENGES AND RESOLUTIONS

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INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 211-222页

作者： CHITRE, DM GOKHALE, DS HENDERSON, T LUNSFORD, JL MATHEWS, N COMSAT Laboratories 22300 Comsat Drive Clarksburg MD 20871 USA. Received his B.Sc. from the University of Bombay India an M.A. in mathematics from the University of Cambridge U.K. and a Ph.D. in physics from the University of Maryland. He is currently an Associate Executive Director of the Network Technology Division at COMSAT Laboratories. He has been involved in research and development activities in ISDN VSAT networks data communications and network systems and architectures. Prior to his current positions Dr. Chitre was a Principal Scientist in the Network Technology Division at COMSAT Laboratories. Dr. Chitre joined COMSAT Laboratories in 1980. He has made major contributions to the analysis and architecture of data communication ISDN and BISDN via satellite. Dr. Chitre directs and participates in the international and national standards activities in ISDN BISDN and data communication as they apply to satellite communication. He was Chairman of the Working Group on Protocols and Network Timing Function of the CCIR/CCITT Joint Ad Hoc Group on ISDN-Satellite Matters during 1990–1992. Currently he is the Chairman of the Working Group on New Technologies in the ITU Intersector Coordinating Group (ICG) on Satellite Matters. Dr. Chitre was a programme manager during 1990 and 1991 on a contract from INTELSAT on systems studies on satellite communications systems architectures for ISDN and broadband ISDN systems. Currently he is the technical manager of the DoD Contract on ATM via satellite demonstration and the programme manager for the INTELSAT contract on analysis and top-level specification of INTELSAT ISDN subnetworks and SDH compatible transport network. Department manager for ISDN/Data Communications in the Network Technology Division of COMSAT Laboratories. His responsibilities include managing the implementation of next generation telecommunication systems for fixed and mobile satellite systems. Current projects include the development of a high data rate gateway switch that provides for the

Key issues regarding the operation of the broadband integrated services digital network (BISDN) via satellite are presented herein. The specific issues, challenges, and their resolutions are detailed. In particular, the impact of error characteristics and propagation delay on the operation of BISDN via satellite is discussed. Solutions are presented for removing adverse effects and providing high-quality service to users of BISDN via satellite.

关键词： ATM BISDN

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HYBRID SATELLITE AND TERRESTRIAL NETWORKS

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INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 313-327页

作者： CHITRE, DM SHYY, DJ EPHREMIDES, A GUPTA, S COMSAT Laboratories 22300 Comsat Drive Clarksburg MD 20871–9475 USA. Received his B.Sc. from the University of Bombay India an M.A. in mathematics from the University of Cambridge U.K. and a Ph.D. in physics from the University of Maryland. He is currently an Associate Executive Director of the Network Technology Division at COMSAT Laboratories. He has been involved in research and development activities in ISDN VSAT networks data communications and network systems and architectures. Prior to his current positions Dr. Chitre was a Principal Scientist in the Network Technology Division at COMSAT Laboratories. Dr. Chitre joined COMSAT Laboratories in 1980. He has made major contributions to the analysis and architecture of data communication ISDN and BISDN via satellite. Dr. Chitre directs and participates in the international and national standards activities in ISDN BISDN and data communication as they apply to satellite communication. He was Chairman of the Working Group on Protocols and Network Timing Function of the CCIR/CCITT Joint Ad Hoc Group on ISDN/Satellite Matters during 1990–1992. Currently he is the Chairman of the Working Group on New Technologies in the ITU Intersector Coordinating Group (ICG) on Satellite Matters. Dr. Chitre was a programme manager during 1990 and 1991 on a contract from INTELSAT on systems studies on satellite communications systems architectures for ISDN and broadband ISDN systems. Currently he is the technical manager of the DoD Contract on ATM via satellite demonstration and the programme manager for the INTELSAT contract on analysis and top-level specification of INTELSAT ISDN subnetworks and SDH compatible transport network. Received the B.S. degree in electrical engineering from national Chiao-Tung University Hsin-Chu Taiwan in 1983 and the M.S. and Ph.D. degrees in electrical engineering from Georgia Institute of Technology Atlanta GA in 1986 and 1990 respectively. From June 1987 to October 1987 he worked for the Department of Neurology Emory Univers

The role of satellite communications in networks that provide new services, such as frame relay and multimedia, is investigated. Both passive and active (on-board switching/processing) satellite systems are considered. Novel techniques are developed for each system to demonstrate, via detailed analysis and simulation, how the communications bandwidth agility of multipoint/broadcast satellite channels, and the on-board switching/processing, makes it feasible to provide these new services via hybrid satellite and terrestrial networks in a resource-efficient manner.

关键词： HYBRID NETWORKS ON-BOARD processing FRAME RELAY

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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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