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IEEE-EMBS Conference on Biomedical engineering and Sciences

作者： Mehrdad Moghbel Hajjah Rozi Mahmud Syamsiah Mashohor M. Iqbal Bin Saripan Sensor Technology Laboratory Institute of Advanced Technology Dept. of Informatics and Imaging Faculty of medicine and health sciences UPM Dept. of Computer & Communication Systems Faculty of Engineering UPM

ISBN: (纸本)9781467316644

In breast thermography diagnostic, proper detection and segmentation of the areola area as well as detection of breast boundaries present the biggest challenge. As the boundaries of breasts especially in the upper quadrants are usually not present, this produces a great deal of challenge to segment breasts automatically. Many approaches have been developed to segment the breast in the past such as Snakes, Active Contours and Circular Hough Transforms, but these methods fail to detect the boundaries of the breast with the required level of accuracy especially the upper boundaries of the breast. By utilizing most recent segmentation method which is Random Walkers, the breast can be segmented accurately which in turn will increase the accuracy and the reliability of computer aided detection/diagnosis systems.

关键词： Image segmentation Random walkers Breast thermography Areola detection

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A brain machine interface control algorithm designed from a feedback control perspective

A brain machine interface control algorithm designed from a ...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Vikash Gilja Paul Nuyujukian Cindy A. Chestek John P. Cunningham Byron M. Yu Joline M. Fan Stephen I. Ryu Krishna V. Shenoy Dept. of Computer Science Dept. of Bioengineering 4School of Medicine Stanford Inst. for Neuro-Innovation and Translational Neuroscience Dept. of Electrical Engineering Dept. of Bioengineering

ISBN: (纸本)9781424441198

We present a novel brain machine interface (BMI) control algorithm, the recalibrated feedback intention-trained Kalman filter (ReFIT-KF). The design of ReFIT-KF is motivated from a feedback control perspective applied to existing BMI control algorithms. The result is two design innovations that alter the modeling assumptions made by these algorithms and the methods by which these algorithms are trained. In online neural control experiments recording from a 96- electrode array implanted in M1 of a macaque monkey, the ReFIT-KF control algorithm demonstrates large performance improvements over the current state of the art velocity Kalman filter, reducing target acquisition time by a factor of two, while maintaining a 500 ms hold period, thereby increasing the clinical viability of BMI systems.

关键词： machine algorithm perspective

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Ontology-guided approach to retrieving disease manifestation images for health image base construction

Ontology-guided approach to retrieving disease manifestation...

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2012 IEEE 2nd Conference on Healthcare informatics, Imaging and Systems Biology, HISB 2012

作者： Chen, Yang Ren, Xiaofeng Zhang, Guo-Qiang Xu, Rong Dept. of Electrical Engineering and Computer Engineering Case Western Reserve University Cleveland OH 44106-7071 United States Intel Science and Technology Center on Pervasive Computing Seattle WA 98195 United States Division of Medical Informatics Case Western Reserve University Cleveland OH 44106-7291 United States

ISBN: (纸本)9780769549217

Building a comprehensive medical image database, in the spirit of the UMLS, can be beneficial for assisting diagnosis, patient education and self-care. However, a highly curated, comprehensive image database is difficult to collect as well as to annotate. We present an approach to combine visual object detection technologies with medical ontology to automatically mine web photos and retrieve a large number of disease manifestation images with minimal manual labeling. Comparing to a supervised approach, our ontology-guided approach reduces manual labeling effort to 1/10 on a variety of eye/ear/mouth diseases and improves the precision of retrieval by over 10% in many cases. © 2012 IEEE.

关键词： Ontology

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CP-driven Modelling for Multi-modal Cyclic Transport Systems

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IFAC Proceedings Volumes 2012年第6期45卷 339-344页

作者： G. Bocewicz R. Wójcik Z. Banaszak Dept. of Computer Science and Management Koszalin University of Technology Sniadeckich 2 75-453 Koszalin Poland Institute of Computer Engineering Control and Robotics Wrocław University of Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland Dept. of Business Informatics Warsaw University of Technology Narbutta 85 02-524 Warsaw Poland

This paper concerns the domain of the multimodal transportation systems composed of buses, trains, trams and subways lines and focuses on the scheduling problems encountered in these systems. Transportation Network Infrastructure (TNI) can be modeled as a network of lines providing cyclic routes for particular kinds of stream-like moving transportation means. Lines are connected by common shared change stations. Depending on TNI timetabling the time of the trip of passengers following different itineraries may dramatically differ, e.g. the same distances along the north-south, and east-west directions may require different travel time. So, the mine question regards of TNI schedulability, e.g. the guarantee the same distances in arbitrarily assumed directions will require approximate traveled time. Considered timetabling problem belongs to NP-hard ones. The declarative model of TNI enabling to formulate cyclic scheduling problem in terms of the constraint satisfaction one is our main contribution. At last, the simulated results manifest the promising properties of the proposed model.

关键词： cyclic scheduling multimodal transport system multimodal processes declarative modeling constraints programming

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Tile-Based GPU Optimizations through ESL Full System Simulation

Tile-Based GPU Optimizations through ESL Full System Simulat...

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IEEE International Symposium on Circuits and Systems

作者： Hsu-Yao Huang Chi-Yuan Huang Chung-Ho Chen Information and Communications Research Labs Industrial Technology Research Institute Hsinchu Taiwan Dept. of Electrical Engineering and Inst. of Computer & Communication Engineering National Cheng Kung University Tainan Taiwan

ISBN: (纸本)9781467302180

We present a tile-based GPU design which is modeled in a full system simulation platform. The full system simulation platform includes a functional Linux-based system on which the GPU is incorporated for design explorations. To accurately estimate the execution time of the application graphics software, an execution time synchronization mechanism for the virtual platform is developed. We extend the Ericsson Texture Compression (ETC) scheme in our GPU to support alpha compression. In this way, we are able to reduce the external memory accesses to about one sixth, and speed up the rasterization engine (RE) by 35%. We also optimize the hardware-and-software data flow through the full system design platform and obtain significant improvements.

关键词： Graphics processing unit Tiles Rendering (computer graphics) Hardware Optimization Benchmark testing Throughput

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Active node based fault tolerance in Wireless Sensor Network

Active node based fault tolerance in Wireless Sensor Network

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IEEE India Conference (INDICON)

作者： D. D. Geetha N. Nalini R. C. Biradar Dept. of Electronics and Conmmunication Engineering Reva Institute of Tech. and Mgmt. Bangalore India Dept. of Computer Science and Engineering Nitte Meenakshi Inst. of Tech. Bangalore India

In this paper, we propose a novel idea of an active node model in Wireless Sensor Network (WSN) to identify the faulty nodes using battery power model and interference model. Fault tolerance against.low battery power is designed through hand-off mechanism where in the faulty node selects the neighboring node having highest power and transfers all the services that are to be performed by the faulty node to the selected neighboring node. The hand-off mechanism involves transmitting the connectivity status of a faulty node such as source address, destination address, previous hop address, next hop address and time stamp to selected neighboring node. Fault tolerance against.interference is provided by dynamic power level adjustment mechanism by allocating the time slot to all the neighboring nodes. If a particular node wishes to transmit the sensed data, it enters active status and transmits the packet with maximum power; otherwise it enters into sleep status having minimum power that is sufficient to receive hello messages and to maintain the connectivity. The performance evaluation is tested through simulation for packet delivery ratio and control overhead and we see that there is an improvement in the network throughput and reliability.

关键词： Batteries Interference Fault tolerance Fault tolerant systems Wireless sensor networks Mathematical model Equations

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Design of an RNS reverse converter for a new five-moduli special set 12

Design of an RNS reverse converter for a new five-moduli spe...

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22nd Great Lakes Symposium on VLSI, GLSVLSI'2012

作者： Patronik, Piotr Berezowski, Krzysztof Biernat, Janusz Piestrak, Stanislaw J. Shrivastava, Aviral Inst. of Computer Engineering Control and Robotics Wroclaw Univ. of Technology 50-372 Wroclaw Poland Université de Lorraine 54506 Vandoeuvre-lès-Nancy France CSE Dept Compiler Microarchitecture Lab Arizona State University Tempe AZ 85281 United States

ISBN: (纸本)9781450312448

In this paper, we present a new residue number system (RNS) {2n - 1, 2n, 2n + 1, 2n+1 + 1, 2n-1 + 1} of five well- balanced moduli that are co-prime for odd n. This new RNS complements the 5-moduli RNS system proposed before for even n {2n-1, 2n, 2n+1, 2n-1, -1}. With the new set, we also present a novel approach to designing multimoduli reverse converters that focuses strongly on moving a significant amount of computations off the critical path. The synthesis of the resulting design over the ST Microelectronics 65nm LP library demonstrates that the delay, area, and power characteristics improve the performance and power consumption of the existing complementary 5-moduli set. Copyright 2012 ACM.

关键词： Microelectronics

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Design and Control of a Robot for the Assessment of Psychological Factors in Prosthetic Development

Design and Control of a Robot for the Assessment of Psycholo...

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IEEE International Conference on Systems, Man, and Cybernetics

作者： P. Beckerle O. Christ J. Wojtusch J. Schuy K. Wolff S. Rinderknecht J. Vogt O. von Stryk Dept. of Mechanical Engineering Inst. for Mechatronic Systems Technische Universitat Darmstadt Dept. of Human Science Work and Engineering Psychology Technische Universitat Darmstadt Dept. of Computer Science Simulation Systems Optimization and Robotics Technische Universitat Darmstadt

ISBN: (纸本)9781467317139

This paper introduces a robotic concept for the assessment of psychological factors in prosthetic design. Its aim is to imitate the postural movements of the participants while those are conducting squatting movements in order to investigate the integration of artificial limbs to the subject's body scheme. Therefore, the robot mimics the functionality and appearance of the human foot, shank and thigh as well as the ankle and knee joint. To induce a more realistic outer appearance, the hull of a shop-window mannequin is used as cladding. The robot is controlled by a computed torque control combined with a RGB-D sensor for the acquisition of the desired trajectories from the participant. In the test setup one leg of the participant is hidden from his view while the robot stands next to him and imitates the movements of this leg. This paper gives an insight in the theory of body schema integration. The concept of the robot is described and detailed information about the mechanical design and actuator dimensioning in accordance with psychological and biomechanical requirements are given. Furthermore, the concept of the human-machine interface, the control algorithm and simulations based on experimental data from a human subject are presented.

关键词： Psychological Factors Body Scheme Development Methodology Prosthetics Robotics Robot Psychological Factors human subject Torque control computer algorithms Artificial Limbs Prosthesis Standing Orders Equipment Design Movements Knee Joint Thigh DNA Integration integration

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Ethologically Inspired Human-Robot Communication for Monitoring Support System in Intelligent Space

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IFAC Proceedings Volumes 2012年第22期45卷 58-63页

作者： Takuya Ichikawa Wataru Beppu Szilveszter Kovács Peter Korondi Hideki Hashimoto Mihoko Niitsuma Dept. of Precision Mechanics Chuo University Tokyo Japan Department of Automation University of Miskolc Miskolc Hungary Computer and Automation Research Institute of the Hungarian Academy of Sciences Dept. of Mechatronics Optics and Applied Informatics Budapest University of Technology and Economics Budapest Hungary Dept. of Electrical electronic and communication engineering Chuo University Tokyo Japan

This paper presents human-robot communication for a monitoring support system in an Intelligent Space. An Intelligent Space (iSpace) is a space in which many intelligent devices are inst.lled to observe the user's environment. In this paper, we apply the iSpace observation function to a monitoring system used for maintaining the safety of elderly persons receiving home-care support. In addition, we use a mobile robot as a tool to deliver monitoring results to care assistants. We focus on an ethological approach for designing robot behaviors for human-robot communication. The implementation of these robot behaviors based on an ethological approach, and the results of an experiment conducted to evaluate these behaviors, are then presented.

关键词： human-robot communication Intelligent Space ethology

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Fuzzy Flip-Flop based Neural Networks as a novel implementation possibility of multilayer perceptrons

Fuzzy Flip-Flop based Neural Networks as a novel implementat...

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IEEE inst.umentation and Measurement technology Conference

作者： Rita Lovassy László Gál Árpád Tóth László T. Kóczy Imre J. Rudas Inst. of Microelectronics and Technology Óbuda University Budapest Hungary Dept. of Informatics Faculty of Engineering Sciences Széchenyi István University Gyor Hungary Dept. of Telecommunications and Media Informatics Budapest University of Technology and Economics Budapest Hungary Dept. of Technology Informatics and Economy University of West Hungary Szombathely Hungary Institute of Intelligent Engineering Systems John von Neumann Faculty of Informatics Óbuda University Hungary Dept. of Automation Faculty of Engineering Sciences Széchenyi István University Györ Hungary Department of Automation Faculty of Engineering Sciences Széchenyi István University Győr Hungary Inst. of Intelligent Engineering Systems John von Neumann Obuda University Budapest Hungary

Fuzzy Flip-Flop based Neural Networks (FNN) constructed from fuzzy D flip-flops are studied as a novel technique to implement multilayer perceptrons. The starting point of this approach is the concept of fuzzy flip-flop (F 3 ), as the extension of the binary counterpart. Fuzzy D flip-flop based neurons are viewed, as sigmoid function generators. Their characteristic equations contain simple fuzzy operations, thus enabling easy implementability. FNNs have an interconnected fuzzy neuron structure composed from a large number of neurons acting in parallel which are capable of learning, and are suitable for function approximation. In this paper we propose the FPGA implementation of Łukasiewicz operations, furthermore of fuzzy D flip-flop neurons based on Łukasiewicz norms.

关键词： Flip-flops Neurons Fuzzy neural networks Biological neural networks Equations Field programmable gate arrays Timing

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