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JOINT: An object oriented message passing interface for parallel programming in java 9th

9th International Conference on High-Performance computing and Networking, HPCN Europe 2001

作者： Yero, Eduardo J. H. Henriques, Marco A. A. Garcïa, Javier R. Leyva, Alina C. Department of Computer Engineering and Industrial Automation School of Electrical and Computer Engineering State University of Campinas Sao Paulo Brazil Faculty of Mathematics and Computing Sciences University of Havana Cuba

ISBN: (纸本)3540422935

Message-passing programming interfaces are widely used when programming parallel applications. Systems such as PVM and MPI have been successful at providing the basic capabilities needed to implement parallel applications efficiently. With the advent of Java, efforts have been conducted to define a message-passing interface to be used by applications written in that language. However, current proposals have been designed to stay as close to PVM and MPI as possible, and thus fail to exploit the capabilities offered by the Java platform. This paper introduces JOINT, a message-passing programming interface for parallel applications written in Java. JOINT is designed to be simple, intuitive and to smoothly integrate with the Java environment. The paper also presents a real parallel example implemented using JOINT to illustrate the facilities given by the interface. JOINT is already implemented as part of two different distributed parallel systems: JoiN and mJoiN. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Message passing

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Design of high-speed and flexible controllers in programmable logic devices

Design of high-speed and flexible controllers in programmabl...

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Canadian Conference on electrical and computer engineering (CCECE)

作者： A. Grbic S. Srbljic Z. Vranesic Department of Electrical and Computer Engineering University of Toronto ONT Canada Professor at the Faculty of Electrical Engineering and Computing University of Zagreb Croatia

ISBN: (纸本)0780367154

Programmable logic devices, PLDs, continue to increase in terms of logic capacity and speed. Although logic capacity is less of an issue given the large devices on the market today, designers are still challenged with meeting timing and flexibility requirements for demanding applications. We demonstrate with an example, cache coherence controllers in the NUMAchine multiprocessor, an approach that can be used to implement a design with a demanding set of requirements using PLD technology. The approach consists of two parts. First, the circuits are functionally decomposed into simpler sub-circuits. The functional decomposition improves timing performance by reducing the number of functions with large fan-in and improves flexibility by confining changes to a particular sub-circuit. Second, the CAD tools are guided in selecting devices and allocating resources. In the implementation, multiple devices were experimented with before the speed requirements were met. The resources were then allocated to increase the probability of accommodating future changes.

关键词： Programmable logic devices Logic devices Timing Logic design Flexible printed circuits Resource management Programmable logic arrays Logic gates Propagation delay Nanoscale devices

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A system for tracking laboratory animals based on optical flow and active contours

A system for tracking laboratory animals based on optical fl...

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International Conference on Image Analysis and Processing

作者： Z. Kalafatic S. Ribaric V. Stanisavljevic Faculty of Electrical Engineering and Computing Department of Electronics Microelectronics Computer and Intelligent Systems Zagreb Croatia

We present a working system for real-time tracking of multiple laboratory animals. As it is usually possible to ensure good contrast between the animals and the background, the tracking of a single animal or several physically separated animals can be obtained by relatively simple algorithms. The main problem arises when we try to track several almost identical, uniformly coloured animals during their contacts. To deal with this problem, we utilize dynamic information extracted by estimating sparse optical flow along the object contours. Optical flow vectors are used for updating the positions of the tracked contours in a sequence of image frames. The local properties of optical flow enable the system to track the objects during their contact, although some parts of the object contours become hidden. The missing dynamic information is reconstructed by using a model of constant optical flow along an object contour. The reconstructed contours are then adjusted to real object boundaries in the current frame by using an active contour model. The robustness of the tracking algorithm is improved by adding a supervision module, which detects tracking failures and reinitialises the contours that lose their targets. The system has been tested on real sequences with laboratory animals during pharmacological experiments and has been shown to be robust and efficient. Future extensions will include expert knowledge of biomedical and pharmacological experts. The major goal is to build a system that will provide an objective and standardised tool for evaluation of animal behaviour during experiments.

关键词： Laboratories Animals Image motion analysis Biomedical optical imaging Image reconstruction Robustness Target tracking Real time systems Data mining Active contours

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On simulation based analysis and synthesis of hierarchical network sturctures 6

On simulation based analysis and synthesis of hierarchical n...

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6th European control Conference, ECC 2001

作者： Tanevska, Dijana J. Dimirovski, Georgi M. Stankovski, Mile J. Jing, Yuanwei Makedonski Telekomunikacii AD Orce Nikolov Str. b.b. SkopjeMK-91000 Macedonia Inst. of Automation and Systems Engg. Faculty of Electrical Engg. SS Cyril and Methodius University SkopjeMK-1000 Macedonia Department of Computer Engg. Faculty of Engineering DOGUS University Kadikoy-IstanbulTR-81010 Turkey Dept. of Automatic Control and Control Eng. School of Information Science and Engineering Northeastern University Shenyang Liaoning110006 China

ISBN: (纸本)9783952417362

Analysis of complex systems such as hierarchically structured network systems that are employed in modelling and analysis various aspects and issues of control and management in telecommunications is investigated. Theory of graphs and binary matrices appear to be most suitable tools for modelling the overall structure of complex systems, in general, and of systemic hierarchies, in particular. A systematic methodology has been developed for computer simulation analysis and detecting general hierarchies in communications networking as well as for synthesis of system hierarchies. This methodology is an improved extension of Warfield's technique. © 2001 EUCA.

关键词： Discrete event simulation

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Design and implementation of Automatic Parallel Detection Layer

Design and implementation of Automatic Parallel Detection La...

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IEEE International Conference on Systems, Man and Cybernetics

作者： M. Ahamed H. Eldeeb S. Nassar N. Bagherzadeh Computer Science Mathematics Department Faculty of Science Cairo University Cairo Egypt Electrical and Computer Engineering University of California Irvine Irvine CA USA Computer & Control Department Electronic Research Institute Head of Parallel and Distributed Systems team Cairo Egypt Chair of Electrical and Computer Engineering University of California Irvine Irvine CA USA

We develop a new software layer called the Automatic Parallel Detection Layer (APDL) for the automatic transformation from sequential to parallel code. The main interest, in this research, is the parallelism at loop level, because significant parallelism in programs almost invariably occurs in loops. The proposed APDL has five processes for code transformation: the sequential source code parser, data dependence analysis of this code, partitioning, scheduling both task and data, and generating parallel source code. Many cases have been studied to evaluate the performance of the developed layer. The performance is evaluated depending on the execution time of: the sequential code, the parallel programmer code, and the code output from APDL for the same case study. Performance results show that APDL greatly improves the execution time with respect to sequential execution time, and saves on the high cost of a parallel programmer.

关键词： Parallel processing Concurrent computing Programming profession Electronic mail Program processors Distributed computing High performance computing computer science Automatic control Parallel programming

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Wavelet power spectrum-based prediction of successful defibrillation from ventricular fibrillation

Wavelet power spectrum-based prediction of successful defibr...

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

作者： P.S. Addison N. Uchaipichat J.N. Watson G.R. Clegg C.E. Robertson P.A. Steen T. Eftestol Faculty of Engineering and Computing Napier University Edinburgh UK Cardiodigital Limited Edinburgh UK Department of Accident and Emergency Medicine Royal Infirmary of Edinburgh NHS Trust Edinburgh UK Department of Anesthesiology Ullevaal University Hospital Oslo Norway Department of Electrical and Computer Engineering Stavanger University College Stavanger Norway

This paper reports on work in progress to develop a wavelet-based method of outcome prediction after DC countershock. The method correlates return of spontaneous circulation (ROSC) with features of the wavelet-based p... 详细信息

关键词： Defibrillation Fibrillation Wavelet analysis Continuous wavelet transforms Frequency Electrocardiography Signal analysis Signal resolution Wavelet transforms Discrete wavelet transforms

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Regularization and validation of neural network models of nonlinear systems

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e & i Elektrotechnik und Informationstechnik 2000年第1期117卷 24-31页

作者： I. Petrović M. Baotić N. Perić Faculty of Electrical Engineering and Computing Department of Control and Computer Engineering in Automation University of Zagreb Zagreb Croatia

A characteristic feature of the neural network models is the large number of parameters. A model offering many parameters usually gives rise to problems, and the variance contribution to the modeling error might be very high. Therefore, it is crucial to find the model with the optimal number of parameters. In this paper two techniques of selection of the optimal number of model parameters are described and compared: explicit and implicit regularization techniques. Model validation forms the final stage of an identification procedure with the aim of assessing objectively whether the identified model agrees sufficiently well with the observed data. In this paper the reliability of the correlation-based validation tests and the χ2-test is analyzed.

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A software architecture for image acquisition and camera control in an active computer vision system

A software architecture for image acquisition and camera con...

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22nd International Conference on Information Technology Interfaces, ITI 2000

作者： Šegvić, Siniša Stanisavljević, Vladimir Kalafatić, Zoran Department of Electronics Microelectronics Computer and Intelligent Systems Faculty of Electrical Engineering and Computing Unska 3 10000 Zagreb Croatia

ISBN: (纸本)9539676916

In a system for active computer vision, there is an intrinsic need for interfacing two different kinds of specific hardware devices: image digitizer and controllable camera. The architecture of software components responsible for these interfaces must be carefully designed in order to achieve their scalability, testability, maintainability, reusability and portability. Hardware abstraction is a major concern in this context since it allows to compile and test other system components independently of actual devices and their manufacturers. The paper reports on a feasible solution to the problem having many of the desired properties, using the object oriented design methodology. The designed architecture have been successfully implemented, in combination with several actual mechanisms for image acquisition and camera control. © 2000 Univ of Zagreb.

关键词： Distributed computer systems

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A Knowledge-Base Generating Fuzzy-Neural controller

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IFAC Proceedings Volumes 2000年第28期33卷 207-212页

作者： Ivan Petrović Kristijan Maček Nedjeljko Perić Department of Control and Computer Engineering in Automation Faculty of Electrical Engineering and Computing University of Zagreb Unska 3 10000 Zagreb Croatia

This paper presents a modification to the Kandadai and Tien’s learning algorithm for tuning a fuzzy-neural controller that is able to automatically generate a knowledge base. Tuning is based on reinforcements from a dynamical system, thus giving a pseudosupervised learning scheme using error backpropagation. Originally, a weak reinforcement in the form of a binary failure signal was assumed which proved to be insufficient in terms of steady-state error. Therefore, a continuous reinforcement signal is applied enabling the system to correct the error as well as decreasing the overall control effort in the learning phase.

关键词： expert systems intelligent control fuzzy logic neural networks

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Pole Placement controller Design Based on Fuzzy Process Model

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IFAC Proceedings Volumes 2000年第28期33卷 219-224页

作者： Robert Cupec Nedjeljko Perić Ivan Petrović Department of Control and Computer Engineering in Automation Faculty of Electrical Engineering and Computing university of Zagreb Unska 3 10000 Zagreb Croatia

An explicit self-tuning controller based on the Takagi-Sugeno fuzzy model of the process is proposed. The fuzzy model is represented as a linear regression model whose parameters are functions of some of the process variables. Such a model can be considered as a linear time-varying model whose parameter values are known at every moment. The pole placement design procedure modified for time-varying systems is applied to obtain the polynomial controller parameters that provide the desired closed-loop poles. The proposed algorithm is very simple, and thus suitable for on-line controller design in adaptive control systems.

关键词： fuzzy control fuzzy modeling adaptive control

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