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作者： Kim, Man Cheol Seong, Poong Hyun Hollnagel, Erik Department of Nuclear and Quantum Engineering Korea Advanced Institute of Science and Technology 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 Korea Republic of Department of Computer Science and Informatics University of Linköping S-581 83 Linköping Sweden

The control mode is the core concept for the prediction of human performance in CREAM. In this paper, we propose a probabilistic method for determining the control mode which is a substitute for the existing deterministic method. The new method is based on a probabilistic model, a Bayesian network. This paper describes the mathematical procedure for developing the Bayesian network for determining the control mode. The Bayesian network developed in this paper is an extension of the existing deterministic method. Using the Bayesian network, we expect that we can get the best estimate of the control mode given the available data and information about the context. The mathematical background and procedure for developing equivalent Bayesian networks for given discrete functions provided in this paper can be applied to other discrete functions to develop probabilistic models. © 2005 Elsevier Ltd. All rights reserved.

关键词： Probability

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Java simulation platform for control system based on block diagram

Java simulation platform for control system based on block d...

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IEEE International Conference on computer-Aided Design

作者： Masanobu Koga Yusuke Tsutsui Jun Yabuuchi Department of Systems Innovation and Informatics Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Fukuoka Japan

This paper proposes a new efficient method for modeling and simulation of control systems using an adjacency matrix in graph theory. A Java simulation platform, which has been developed based on the proposed method, i... 详细信息

关键词： Java Control system synthesis Equations Linear systems Control systems Size control Computational modeling computer simulation Graph theory Transfer functions

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Expression compensation for face recognition using a polar geodesic representation

Expression compensation for face recognition using a polar g...

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3rd International Symposium on 3D Data Processing, Visualization, and Transmission, 3DPVT 2006

作者： Mpiperis, Iordanis Malassiotis, Souris Strintzis, Michael G. Information Processing Laboratory Electrical and Computer Engineering Department Aristotle University of Thessaloniki Thessaloniki 541 24 Greece Informatics and Telematics Institute Centre for Research and Technology Hellas 1st Km Thermi-Panorama Rd Thessaloniki 57001 Greece

ISBN: (纸本)0769528252

This paper addresses the problem of face recognition in the presence of facial deformations caused by expressions. An isometric mapping between surfaces is assumed, which allows preservation of geodesic distance between facial points. Subject to this assumption, we propose a novel technique which integrates 2D and 3D information to establish a new deformation invariant representation of the face. The 3D surface is used to define a polar geodesic coordinate space which is independent of the intrinsic geometry of the face. The corresponding color image is embedded in this space and serves as the recognition data. A preceding stage of hierarchical diffeomorphic grid-based image warping before the recognition process combined with a lip segmentation technique are also employed to increase the overall performance of the algorithm. © 2006 IEEE.

关键词： Face recognition

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Web Service discovery based on Quality of Service

Web Service discovery based on Quality of Service

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ACS/IEEE International Conference on computer Systems and Applications

作者： Y. Makripoulias C. Makris Y. Panagis E. Sakkopoulos P. Adamopoulou A. Tsakalidis Department of Computer Engineering & Informatics School of Engineering University of Patras Patras Greece Internet and Multimedia Technologies Research Unit Research Academic Computer Technology Institute Patras Greece

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A delay-based analytical provisioning model for a QoS-enabled service

A delay-based analytical provisioning model for a QoS-enable...

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IEEE International Conference on Communications (ICC)

作者： Christos Bouras Afrodite Sevasti RA Computer Technology Institute-RACTI Department of Computer Engineering and Informatics University of Patras Patras Greece Greek Research and Technology Network S. A. Athens Greece

Carefully designed and managed services are essential for quality-demanding traffic, especially in large-scale IP networks where the aggregation of flows and the variety of traffic types are extensive. Although individual mechanisms have been widely investigated, not much related work exists on integrated approaches to QoS provisioning that are also feasible to implement. This work presents a thorough approach to the design, dimensioning and provisioning of a high priority service for high-quality demanding traffic over an IP network. Our approach employs efficient scheduling and a dynamic admission control scheme while demonstrating novel characteristics in terms of the quality offered to IP flows.

关键词： Delay Analytical models Telecommunication traffic Traffic control IP networks Quality management Large-scale systems Quality of service Communication system traffic control Dynamic scheduling

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Simple and Efficient Colorization in YCbCr Color Space

Simple and Efficient Colorization in YCbCr Color Space

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International Conference on Pattern Recognition

作者： H. Noda M. Niimi Jin Korekuni Department of Systems Innovation and Informatics Kyushu Institute of Technology Iizuka Japan Department of E.E. and Computer Engineering Kyushu Institute of Technology Kitakyushu Japan

We have already proposed a colorization method in RGB color space, where the colorization problem is formulated as the maximum a posteriori (MAP) estimation of a color image given a monochrome image. Markov random field (MRF) is used for modeling a color image which is utilized as a prior for the MAP estimation. In this paper, a colorization method in YCbCr space is presented, which is derived by the same formulation as in RGB color space. The presented method in YCbCr space is much simpler than that in RGB space and requires much less computation time: about one fourth of computation time in RGB space. As for quality of estimated color image, both methods in YCbCr and RGB space produce color images with comparable PSNR values

关键词： Color Space technology Image segmentation Markov random fields Technological innovation informatics PSNR Motion pictures Software tools Pixel

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Approximation algorithms for path coloring in trees

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2006年 3484 LNCS卷 74-96页

作者： Caragiannis, Ioannis Kaklamanis, Christos Persiano, Giuseppe Research Academic Computer Technology Institute Department of Computer Engineering and Informatics University of Patras 26500 Rio Greece Dipartimento di Informatica ed Applicazioni Università di Salerno 84081 Baronissi Italy

ISBN: (纸本)3540322124

The study of the path coloring problem is motivated by the allocation of optical bandwidth to communication requests in all-optical networks that utilize Wavelength Division Multiplexing (WDM). WDM technology establishes communication between pairs of network nodes by establishing transmitter-receiver paths and assigning wavelengths to each path so that no two paths going through the same fiber link use the same wavelength. Optical bandwidth is the number of distinct wavelengths. Since state-of-the-art technology allows for a limited number of wavelengths, the engineering problem to be solved is to establish communication minimizing the total number of wavelengths used. This is known as the wavelength routing problem. In the case where the underlying network is a tree, it is equivalent to the path coloring problem. We survey recent advances on the path coloring problem in both undirected and bidirected trees. We present hardness results and lower bounds for the general problem covering also the special case of sets of symmetric paths (corresponding to the important case of symmetric communication). We give an overview of the main ideas of deterministic greedy algorithms and point out their limitations. For bidirected trees, we present recent results about the use of randomization for path coloring and outline approximation algorithms that find path colorings by exploiting fractional path colorings. Also, we discuss upper and lower bounds on the performance of on-line algorithms. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Approximation algorithms

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Enabling Process Automation for Service Delivery Excellence and Growth in the Sri Lankan Healthcare Industry

Enabling Process Automation for Service Delivery Excellence ...

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International Conference on Information and Automation for Sustainability (ICIAfS)

作者： Nishanie Pereira Sanath Jayasena Department of Computing Informatics Institute of Technology Colombo Sri Lanka Department of Computer Science and Engineering University of Moratuwa Moratuwa Sri Lanka

Process automation concentrates on automating structured processes of an organization in order to achieve excellent service delivery by enabling the employees to pay more attention to semi structured or unstructured processes. Achieving service delivery excellence adds value to an organization, increases the customer retention and provides opportunity for strategic growth. The growth of the Sri Lankan healthcare sector is a necessity at this stage due to an increasingly ageing community and a significant increase in non-communicable diseases. Despite many regulations that govern the sector, it continues to be inundated with many problems in relation to delivery of healthcare services. This paper examines service delivery issues in the healthcare institutions in the Western province and suggests mechanisms for automating standard processes in order to achieve strategic growth.

关键词： Medical services Aging Diseases Home automation computer industry computer science Biomedical informatics Hospitals Medical diagnostic imaging Laboratories

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Iterative method for designing an observer-based mixed H2/D-stability controller

Iterative method for designing an observer-based mixed H2/D-...

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SICE Annual Conference

作者： Yasushi Kami Eitaku Nobuyama Department of Electrical and Computer Engineering Akashi National College of Technology Hyogo Japan Department of systems innovation and informatics Kyushu Institute of Technology Fukuoka Japan

This paper treats the output feedback H 2 control with regional pole placement condition. In general, this problem is a BMI problem which is difficult to be solved theoretically. The purpose of this paper is to propose an iterative method for obtaining a sub-optimal solution of the H 2 control problem with regional pole placement condition. The key idea of this paper is to employ a full-order observer-based controller. The proposed method produces a sequence of controllers which approaches to the unconstrained globally optimal H 2 controller while it satisfies the D-stability constraint. A numerical example shows the effectiveness of our method

关键词： Iterative methods Design methodology Hydrogen Control systems State feedback Optimal control Output feedback Control theory Linear matrix inequalities Educational institutions

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Nonlinear Small-Gain Condition Covering iISS Systems: Necessity and Sufficiency from a Lyapunov Perspective

Nonlinear Small-Gain Condition Covering iISS Systems: Necess...

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IEEE Conference on Decision and Control

作者： Hiroshi Ito Zhong-Ping Jiang Department of Systems Innovation and Informatics Kyushu Institute of Technology Fukuoka Japan Department of Electrical and Computer Engineering Polytechnic University Brooklyn NY USA

ISBN: (纸本)1424401704;9781424401703

This paper presents conditions for stability of interconnected nonlinear systems consisting of integral input-to-state stable subsystems. Both the necessity and the sufficiency are investigated using a Lyapunov formulation. The ultimate result is a necessary and sufficient condition for integral input-to-state stability (iISS) of the interconnection, which is believed to be the first of its kind. This paper derives two sufficient conditions. One is the iISS-ISS small-gain condition which has been proposed earlier by one of the authors. Its sufficiency is strengthened to cover situations more general than the earlier result. The other condition is a universal representation of the nonlinear small-gain condition which has been a popular tool for dealing with input-to-state stable (ISS) subsystems. This paper proves that, for establishing iISS property of the interconnection, the universal representation can deal with iISS subsystems as much as the iISS-ISS small-gain condition if supply rate functions are smooth everywhere and analytic at zero. Furthermore, two necessary conditions this paper derives demonstrate that the nonlinear small-gain condition in the universal form is also necessary for the iISS property

关键词： Sufficient conditions Interconnected systems Indium tin oxide Nonlinear systems Lyapunov method Nonlinear control systems Control systems Control theory Stability criteria Technological innovation

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