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International Joint Conference on Neural Networks (IJCNN)

作者： M. Ventresca B. Ombuki Systems Design Engineering and member of the Pattern Analysis and Machine Intelligence Laboratory University of Waterloo Waterloo ONT Canada Department of Computing and Information Science University of Guelph Guelph ONT Canada Computer Science Department Brock University Saint Catharines ONT Canada

The problem of designing recurrent continuous-time and spiking neural networks is NP-Hard. A common practice is to utilize stochastic searches, such as evolutionary algorithms, to automatically construct acceptable networks. The outcome of the stochastic search is related to its ability to navigate the search space of neural networks and discover those of high quality. In this paper we investigate the search space associated with designing the above recurrent neural networks in order to differentiate which network should be easier to automatically design via a stochastic search. Our investigation utilizes two popular dynamic systems problems; (1) the Henon map and (2) the inverted pendulum as a benchmark.

关键词： Neural networks Recurrent neural networks Stochastic processes Chaotic communication Neurons Biological system modeling Evolutionary computation Navigation Helium Visualization

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Multichannel Mixing of Speech Signals Accordant with the Method of Multistage Mixing

Multichannel Mixing of Speech Signals Accordant with the Met...

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International Conference on Modern Problems of Radio engineering, Telecommunications and Computer science

作者： Anatoly Melnyk Ruslan Shevchuk Hryhory Sapozhnyk Computer Engineering Department Lviv National Polytechnic University L'viv Ukraine Computer Science Department Ternopil State Economic University Ternopil Ukraine Department of Information Computing Systems and Control Ternopil State Economic University Ternopil Ukraine

In this work we realized the method multistage mixing of speech signals and conducted the series of computational experiments at wav-files. As a result of experiments we received dependences time of mixing speech signals, which are contained in wav-files, from amount wav-files and their descriptions. We formed requirements to the speech signals, that mixed accordant with the method of multistage mixing, which allow decreasing time of mixing of speech signals.

关键词： Speech Multimedia systems Bit rate Real time systems Signal sampling Sampling methods Counting circuits Computer science Control systems Data engineering

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Hybrid Cluster Routing: An Efficient Routing Protocol for Mobile Ad Hoc Networks

Hybrid Cluster Routing: An Efficient Routing Protocol for Mo...

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IEEE International Conference on Communications (ICC)

作者： Xiaoguang Niu Zhihua Tao Gongyi Wu Changcheng Huang Li Cui Department of Computer Science and Technology Nankai University Tianjin China Chinese Academy of Sciences Beijing China Institute of Computing Technology Chinese Academy and Sciences Beijing China Department of Systems and Computer Engineering Carleton University Ottawa Canada

Routing is one of the fundamental but challenging issues in mobile ad hoc networks. During the past several years, a large number of routing protocols have been proposed, which can basically be categorized into three different groups including proactive/table-driven, reactive/on-demand, and hybrid. In this paper, we propose a novel hybrid routing protocol for large scale mobile ad hoc networks, namely HCR (Hybrid Cluster Routing). Here nodes are organized into a hierarchical structure of multi-hop clusters using a stable distributed clustering algorithm. Each cluster is composed of a clusterhead, several gateway nodes, and other ordinary nodes. The clusterhead is responsible for maintaining local membership and global topology information. In HCR, the acquisition of intra-cluster routing information operates in an on-demand fashion and the maintenance of inter-cluster routing information acts in a proactive way. Simulation results show that HCR conduces better scalability, robustness and adaptability to large scale mobile ad hoc networks compared with some well-known routing protocols, e.g. AODV, DSR, and CBRP.

关键词： Routing protocols Mobile ad hoc networks Large-scale systems Scalability Delay Clustering algorithms Network topology Computer science Computer networks Maintenance engineering

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An Intra-Class and Inter-Class Utility-Fair Bandwidth Adaptation Algorithm for Multi-Class Traffic in Wireless Networks

An Intra-Class and Inter-Class Utility-Fair Bandwidth Adapta...

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Asia-Pacific Conference on Communications

作者： Ning Lu John Bigham Nidal Nasser Electronic Engineering Department Queen Mary University of London London UK MPI-QMUL Information Systems Research Center Macao Polytechnic Institute Macao China Electronic Engineering Department Queen''s Mary University of London London UK Department of Computing and Information Science University of Guelph Toronto Canada

ISBN: (纸本)1424405734

Adaptive bandwidth allocation is becoming very attractive in wireless communications since it can adjust the allocated bandwidth of ongoing calls to cope with the network resource fluctuations. In this paper, we present a novel bandwidth adaptation algorithm for multi-class traffic in wireless networks. With the proposed scheme each call in the network is assigned a utility function according to its traffic characteristics. When the network is overloaded the allocated bandwidth of ongoing calls can be dynamically degraded to free bandwidth to accept the new and handoff calls. The objective of bandwidth degradation is to achieve both intra-class and inter-class utility fairness in each individual cell i.e. all calls within the same class receive fair utility and all different classes of calls receive fair utility. Simulation results show that our bandwidth adaptation scheme is effective in attaining both kinds of utility fairness while keeping the call blocking and handoff dropping probabilities of wireless networks substantially low

关键词： Bandwidth Telecommunication traffic Wireless networks Degradation Channel allocation Traffic control Information systems Computer networks Information science Wireless communication

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Towards a Grid of Sensors for Telemedicine

Towards a Grid of Sensors for Telemedicine

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Annual IEEE Symposium on Computer-Based Medical systems

作者： C.O. Rolim F.L. Koch M. Assuncao C.B. Westphall Network and Management Laboratory Federal University of Santa Catarina Florianopolis Santa Catarina Brazil Grid Computing and Distributed Systems Laboratory and NICTA Victoria Laboratory Department of Computer Science and Software Engineering University of Melbourne Melbourne VIC Australia

In this article, we describe a grid of sensors to collect patients' vital data and to allow real time monitoring of patients in heath-care centres. We analyse the problem scenario and identify the components involved towards the construction of an integrated and homogeneous management system. Finally, we present a case study to demonstrate the applicability of our approach

关键词： Telemedicine Grid computing Laboratories Real time systems Sensor systems Patient monitoring Computerized monitoring Data security Ontologies Computer architecture

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A Semi-Reversible Watermark for Medical Image Authentication

A Semi-Reversible Watermark for Medical Image Authentication

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Conference on Distributed Diagnosis and Home Healthcare D2H2 Transdisciplinary

作者： F. Ahmed I.S. Moskowitz Department of Electrical Engineering & Computer Science Catholic University of America Washington D.C. DC USA High Assurance Computing Systems Naval Research Laboratory Inc. Washington D.C. DC USA

This paper addresses the secure storage and transmission of medical informatics in rapidly growing applications such as teleradiology and telesurgery. In particular, we propose a frequency domain digital watermarking technique that can be used to authenticate medical images in a distributed diagnosis and home healthcare environment. The most significant result of our method is the semi-reversibility property that undoes most of the degradation attributable to the watermarking process

关键词： Watermarking Biomedical imaging Authentication Biomedical informatics Medical diagnostic imaging Information security Medical services Degradation Protection Frequency domain analysis

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CNN Wave computing: Theory, Architectures, Implementations and Applicaions

CNN Wave Computing: Theory, Architectures, Implementations a...

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IEEE International Workshop on Cellular Nanoscale Networks and their Applications, (CNNA)

作者： Marco Gilli Csaba Rekeczky Bertram Shi Department of Electronics Politecnico di Turino Torino Italy Analogic and Neural Computing Systems Laboratory of the Computer and Automation Information Technology Department Institute of the Hungarian Academy of Sciences Budapest Hungary Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Kowloon Hong Kong China

A cellular neural/nonlinear network (CNN) is any spatial arrangement of mainly locally coupled cells, where each cell is a dynamical system which has an input, an output and a state that evolves according to some prescribed dynamical laws. Since the CNN was first introduced in 1988, research in this field has developed rapidly. The goal of this tutorial is to provide participants with a snapshot of the current state of the art and research trends. It covers the broad multi-disciplinary areas of CNN research, from theoretical aspects to applications. The presenters have experience ranging from theoretical analysis of CNN dynamics, VLSI implementation and system level applications

关键词： Cellular neural networks Computer architecture Computer networks Very large scale integration Analog computers Computer interfaces Computer vision Biological system modeling Nonlinear dynamical systems Computer industry

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DEVELOPMENT OF A ZERO MOMENT POINT SENSOR FOR A WALKING ROBOT

DEVELOPMENT OF A ZERO MOMENT POINT SENSOR FOR A WALKING ROBO...

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第二届亚洲机械电子学学术会议

作者： Makoto Shimojo Takuma Araki Takaaki Nishino Aigou Ming Masatoshi Ishikawa Mechanical Engineering and Intelligent Systems The University of Electro-Communications 1-5-1 Chofugaoka Chofu-shi 182-8585 JAPAN Mechanical Engineering and Intelligent Systems The University of Electro-Communications 1-5-1 Chofugaoka Chofu-shi 182-8585 JAPAN Mechanical Engineering and Intelligent Systems The University of Electro-Communications 1-5-1 Chofugaoka Chofu-shi 182-8585 JAPAN Mechanical Engineering and Intelligent Systems The University of Electro-Communications 1-5-1 Chofugaoka Chofu-shi 182-8585 JAPAN Department of Information Physics and Computing Graduate School of Information Science and Technology The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan

A sensor attached to the sole of the foot of a biped robot to detect a Zero Moment Point（ZMP）is proposed and basic experimental results are *** sensor simul- taneously detects the center position of a two-dimensional distributed load on the surface of the sensor and the total load of the *** sensor is sheet-like m form,lightweight（0.2g/cm）,offers a high-speed response （within 1 ms）,and needs a little wiring（four wires）.In the present paper,the principle of the above-described sensor and its characteristics are described,and the ZMP locus is shown for a walking biped robot with the attached sensors.

关键词： Tactile sensor Biped robot Zero Moment Point High-speed response

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On the modelling and computation of nonlinear multibody cable systems

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International Journal of Computers and Applications 2006年第2期28卷 154-161页

作者： Fox, B. Jennings, L.S. Zomaya, A.Y. Institute of High Performance Computing Singapore Science Park 2 1 Sci. Pk. Rd. #01-01 The Capricorn 117528 Singapore Singapore Centre of Applied Dynamics and Optimization University of Western Australia Perth WA 6907 Australia School of Information Technologies University of Sydney Madsen Building F09 Sydney NSW 2006 Australia Institute of High Performance Computing Computational Solid Mechanics and Intelligent Engineering Systems Divisions Department of Mathematics University of Western Australia Perth School of Information Technologies University of Sydney

Lagrange's equations of motion are used to obtain a differential algebraic equation representing the nonlinear dynamics of cable systems approximated through the use of multibody modelling. The differential algebraic equation of index 3 is cast as an ordinary differential equation and integrated using the LSODAR software. The cable system consists of an arbitrary number of links between which restoring torques are placed to provide a damping effect. A cable car is introduced to ride upon the cable, where the initial conditions of the cable car system are determined by allowing the original cable system to fall into an equilibrium position. Graphs and animation indicate the chaotic behaviour of both multibody systems, and it is shown that the CPU time increases in a cubic nature as the number of bodies in the system increases. Finally, the accuracy of the results is investigated using a constraint compliance testing procedure.

关键词： Multi agent systems

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Preface

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Applied Mathematics and Computation 2006年第2期172卷 679-681页

作者： Zhong-Zhi Bai Wai-Ki Ching Michael K. Ng State Key Laboratory of Scientific/Engineering Computing Institute of Comput. Math. and Scientific/Engrg. Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing PR China Department of Mathematics The University of Hong Kong Hong Kong China

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