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

作者： Dimitrios G. Tsalikakis Henngui G. Zhang George P. Kremmydas Dimitrios I. Fotiadis Unit of Medical Technology and Intelligent Information Systems Department of Computer Science University of Ioannina (UoI) Ioannina Greece University of Manchester Institute of Science and Technology Manchester UK

When a brief current pulse is incident on excitable cells in cardiac and other nervous tissue, a change in phase of the cell's response is usually observed. In cardiac tissue, the cells are bared to external stimulation of generally positive currents, which depolarize the cells. In this paper an overview of the application of the phase resetting technique (PRT) in several cardiac models is presented. We discuss the effects of external stimuli in several cardiac cell models and we provide the phase transition curves (PTCs) resulted from the application of PRT with the Zhang et al. sinoatrial node model

关键词： Rhythm Oscillators intelligent systems Information systems computer science Cardiac tissue Limit-cycles Cardiology Cities and towns USA Councils

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Common metrics for human-robot interaction

Common metrics for human-robot interaction

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HRI 2006: 2006 ACM Conference on Human-Robot Interaction

作者： Steinfeld, Aaron Fong, Terrence Kaber, David Lewis, Michael Scholtz, Jean Schultz, Alan Goodrich, Michael Robotics Institute Carnegie Mellon University Pittsburgh PA United States Intelligent Systems Division NASA Ames Research Center Moffett Field CA United States Dept. of Industrial Engineering North Carolina State University Raleigh NC United States Sch. of Information Science University of Pittsburgh Pittsburgh PA United States Information Access Div. NIST Gaithersburg MD United States Intelligent Systems Section US Naval Research Lab. Washington DC United States Computer Science Dept. Brigham Young University Provo UT United States

ISBN: (纸本)1595932941

This paper describes an effort to identify common metrics for task-oriented human-robot interaction (HRI). We begin by discussing the need for a toolkit of HRI metrics. We then describe the framework of our work and identify important biasing factors that must be taken into consideration. Finally, we present suggested common metrics for standardization and a case study. Preparation of a larger, more detailed toolkit is in progress. Copyright 2006 ACM.

关键词： Human computer interaction

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Configuration of Sensors on Small-scale Autonomous Helicopter

Configuration of Sensors on Small-scale Autonomous Helicopte...

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International Conference on Information and Automation (ICIA)

作者： Wenbing Chen Ming Liu Ming Zhu Yong Yu Yunjian Ge Department ofAutomation Institute of Intelligent Machines University of Science and Technology of China Chinese Academy of Sciences China Department of Electrical and Computer Systems Engineering Monash University Australia Institute of Intelligent Machines Chinese Academy and Sciences China

This paper presents a small-scale autonomous helicopter which equipped with more compatible instrument- MP2028-UAV and a number of sensors. Within the payload capability of the model helicopter, we configure the onboa... 详细信息

关键词： Helicopters Instruments Control systems Radio control Servomechanisms Payloads Rotors Engines intelligent sensors Sensor systems

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Environment-Adaptive Antipersonnel Mine Detection System - Advanced Mine Sweeper

Environment-Adaptive Antipersonnel Mine Detection System - A...

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2006 IEEE/RSJ International Conference on intelligent Robots and systems

作者： Toshio Fukuda Yasuhisa Hasegawa Kazuhiro Kosuge Kiyoshi Komoriya Fumihisa Kitagawa Tomohiro Ikegami Department of Micro-Nano Systems Engineering University of Nagoya Japan Department of Intelligent Information Technology University of Tsukuba Japan Department of Bioengineering and Robotics University of Tohoku Japan Intelligent Systems Institute National Institute for Advanced Industrial Science and Technology Japan Mitsui EngineeringMES Shipbuilding Company Limited Japan Tadano Limited Japan

In this paper, we propose an environment-adaptive antipersonnel mine detection system called Advanced Mine Sweeper. Advanced Mine Sweeper is developed based on sensing technologies, access-control technologies and system integration technologies for safe and effective demining procedure after the Level II survey. Advanced Mine Sweeper consists of a sensing vehicle/unit, an access vehicle, and an assist vehicle. The sensing vehicle/unit is composed of an integrated sensor and a small-reaction sensor head manipulator. The access vehicle is parked facing a mine field in order to control the sensing unit position in a global area using its boom. The assist vehicle is parked keeping some distance from a mine field. It controls the sensing vehicle/unit and access vehicle and then displays the processed sensing information for landmine detection, receiving sensing information and sensing position. By using this system, experiments in the field buried dummy landmines were carried out for the utility and performance evaluation

关键词： Vehicles Ground penetrating radar Landmine detection intelligent robots Space technology Orbital robotics Robot sensing systems Information management Gas detectors Radar detection

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The TactaPack: A Wireless Sensor/Actuator Package for Physical Therapy Applications

The TactaPack: A Wireless Sensor/Actuator Package for Physic...

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International Symposium on Haptic Interfaces for Virtual Environment and Teleoperator systems (HAPTICS)

作者： R.W. Lindeman Y. Yanagida K. Hosaka S. Abe Department of Computer Science Worcester Polytechnic Institute USA Department of Information Engineering Faculty of Science and Technology Meijo University Japan Media Information Science Laboratories ATR International Japan Intelligent Robotics and Communication Laboratories ATR International Japan

In this paper, we present preliminary work we have done on designing the TactaPack, a wearable sensor/actuator device that uses a Bluetooth wireless connection to return sensor data to a host, and to receive commands to initiate expressive vibrotactile stimuli. We present our work in the context of a physical therapy application designed to provide more autonomy for patients when performing rehabilitative exercises. This assistive technology has the potential to reduce injuries during therapy due to improper patient joint movement, and decrease the workload of physical therapists, thereby reducing healthcare costs. Though still in the early stages of design, we believe the TactaPack can be used to produce systems that are less cumbersome than current, wired solutions, and simplify the creation of high-level applications by offloading from the CPU to the device the process of sensing, testing against threshold values, and actuation.

关键词： Wireless sensor networks Actuators Packaging Medical treatment Wearable sensors Bluetooth Injuries Medical services Costs System testing

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Video Syntactic Coding for Data Compression

Video Syntactic Coding for Data Compression

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IEEE International Symposium on Consumer Electronics (ISCE)

作者： S. Sheraizin S. Itzikowitz V. Sheraizin Computer Science Department Academic Studies Division College of Management Rishon Lezion Israel Research & Development Institute of Intelligent Video Systems Computer Science Department Academic Studies Division College of Management Rishon Lezion Israel

In this paper we present our new approach to video data preparation for a data compression enhancement named video data syntactic coding. Video data standard encoders MPEG, H.26x use data preparation (preprocessing) based on either data spatial and temporal filtering or on video sequence complexity analysis (by auxiliary encoder use) that is exploited for video filtering. However, preprocessing efficiency is only 10% up to 15%. Our video data syntactic coding presented here is based on both video content complexity assessment in accordance with the named standard encoding algorithm (MC-DPCM) and data filtering adopted to the video complexity and a digital visual perception. The complexity is estimated by data entropy calculation based on averaging of histogram frame-to-frame changes. In addition, the histogram change is used for detection of new details appearance and their in-frame position determination. The video data model is based on a detail visual perception, and the above video content analysis results provide effective video data pre-filtering. The developed video syntactic coding used together with H.264 standard encoders presents up to 25% data compression enhancement

关键词： Video compression Data compression Visual perception Histograms Transform coding Video sequences Encoding Change detection algorithms Filtering algorithms Digital filters

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Towards practical PPM spam filtering: Experiments for the TREC 2006 spam track

Towards practical PPM spam filtering: Experiments for the TR...

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15th Text REtrieval Conference, TREC 2006

作者： Bratko, Andrej Filipič, Bogdan Zupan, Blaž Department of Intelligent Systems Jozef Stefan Institute Jamova 39 Ljubljana SI-1000 Slovenia Faculty of Computer and Information Science University of Ljubljana Trzaska cesta 25 Ljubljana SI-1000 Slovenia Klika Informacijske tehnologije d.o.o. Stegne 21c Ljubljana SI-1000 Slovenia

This paper summarizes our participation in the TREC 2006 spam track. We submitted a single filter for the evaluation, based on the Prediction by Partial Matching compression scheme, a method that performed well in the previous TREC evaluation. A major focus of our effort was to improve efficiency of the method, particularly in terms of memory consumption, in order to establish whether compressionbased filters are in fact a viable solution for practical applications. Our system exhibited fair performance, despite the fact that the filtering techniques remained virtually unchanged from the previous evaluation. We did not investigate methods for tackling delayed user feedback. A very simple strategy of training on most recent examples was used for the active learning task, and found to work surprisingly well given its simplicity.

关键词： Information retrieval

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Finite-Horizon Optimal State-Feedback Control of Nonlinear Stochastic systems Based on a Minimum Principle

Finite-Horizon Optimal State-Feedback Control of Nonlinear S...

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International Conference on Multisensor Fusion and Integration for intelligent systems (MFI)

作者： Marc P. Deisenroth Toshiyuki Ohtsuka Florian Weissel Dietrich Brunn Uwe D. Hanebeck Department of Mechanical Engineering Graduate School of Engineering Osaka University Japan Intelligent Sensor-Actuator-Systems Laboratory Institute of Computer Science and Engineering Universitat Karlsruhe Germany

In this paper, an approach to the finite-horizon optimal state-feedback control problem of nonlinear, stochastic, discrete-time systems is presented. Starting from the dynamic programming equation, the value function will be approximated by means of Taylor series expansion up to second-order derivatives. Moreover, the problem will be reformulated, such that a minimum principle can be applied to the stochastic problem. Employing this minimum principle, the optimal control problem can be rewritten as a two-point boundary-value problem to be solved at each time step of a shrinking horizon. To avoid numerical problems, the two-point boundary-value problem will be solved by means of a continuation method. Thus, the curse of dimensionality of dynamic programming is avoided, and good candidates for the optimal state-feedback controls are obtained. The proposed approach will be evaluated by means of a scalar example system

关键词： Optimal control Nonlinear control systems Control systems Stochastic systems Dynamic programming Stochastic processes Nonlinear equations Taylor series Stochastic resonance intelligent systems

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Evolving Apollonian networks with small-world scale-free topologies

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Physical Review E 2006年第4期74卷 046105-046105页

作者： Zhongzhi Zhang Lili Rong Shuigeng Zhou Department of Computer Science and Engineering Fudan University Shanghai 200433 China Shanghai Key Lab of Intelligent Information Processing Fudan University Shanghai 200433 China Institute of Systems Engineering Dalian University of Technology Dalian 116023 Liaoning China

We propose two types of evolving networks: evolutionary Apollonian networks (EANs) and general deterministic Apollonian networks (GDANs), established by simple iteration algorithms. We investigate the two networks by both simulation and theoretical prediction. Analytical results show that both networks follow power-law degree distributions, with distribution exponents continuously tuned from 2 to 3. The accurate expression of clustering coefficient is also given for both networks. Moreover, the investigation of the average path length of EAN and the diameter of GDAN reveals that these two types of networks possess small-world feature. In addition, we study the collective synchronization behavior on some limitations of the EAN.

关键词： SYNCHRONIZED CHAOS COMPLEX NETWORKS systems LASERS MODEL

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Semantic search in tabular structures

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Informatica (Ljubljana) 2006年第2期30卷 143-152页

作者： Pivk, Aleksander Gams, Matjaž Luštrek, Mitja Department of Intelligent Systems Jozef Stefan Institute Jamova 39 SI-1000 Ljubljana Slovenia Department of Computer Science University of Alberta Edmonton Alta. T6G 2E8 Canada

The Semantic Web search aims to overcome the bottleneck of finding relevant information using formal knowledge models, e.g. ontologies. The focus of this paper is to extend a typical search engine with semantic search over tabular structures. We categorize HTML documents into topics and genres. Using the TARTAR system, tabular structures in the documents are then automatically transformed into ontologies and annotated to build a knowledge base. When posting queries, users receive responses not just as lists of links and description extracts, but also enhanced with replies in the form of detailed structured data.

关键词： Search engines

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