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Annual symposium on Simulation

作者： W.D. Bishop W.M. Loucks Parallel and Distributed Systems Group Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada

A heterogeneous environment for hardware/software cosimulation is described. This environment permits a portion of an application's subsystems to be simulated using reconfigurable hardware while the remainder of the subsystems are simulated using software. An Aptix FPCB populated with Xilinx FPGAs serves as the hardware simulation platform while an IBM-compatible PC serves as the software simulation platform. The two platforms are connected using an Altera reconfigurable logic board which allows the development of a high-speed interface for communication. This paper focuses on the difficulties associated with designing and interfacing simulation entities in this heterogeneous environment. Strategies for designing hardware and software simulation entities are introduced. These strategies reduce the impact of size and performance constraints imposed by the cosimulation environment while addressing the issues of time management and synchronization. A simple queueing application is used to illustrate a design methodology which incorporates these design strategies.

关键词： Hardware Engines Application software Emulation Computational modeling Logic digital signal processing Field programmable gate arrays Software design Environmental management

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Two-dimensional cellular neural networks for pre-processing in face recognition and digital library search

Two-dimensional cellular neural networks for pre-processing ...

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IEEE International symposium on Circuits and Systems (ISCAS)

作者： R.H. Tsai B.J. Sheu M.Y. Wang S.H. Jen Department of Electrical Engineering University of Southern California Los Angeles CA USA

The architecture and the components design of a compact VLSI model based on the extension of the cellular neural network paradigm is described. Face and image recognition is an important function in future smart, portable multimedia systems. However, it involves many complicated mathematical operations that requires extremely large computing power. Since most operations are in two-dimensional format, the cellular neural network paradigm can be extended for selective tasks in face recognition function. Compact neural network is a suitable computing architecture. It uses the state-constrained neuron model that prevents the state variables becoming unbounded. The clear advantage is that the network will converge to proper solutions quickly. In addition, the hardware annealing technique can be applied to the compact neural network architecture so that the optimized solution can be quickly obtained without the drawback of conventional simulated annealing searching complexity and time penalty.

关键词： Cellular neural networks Computer architecture Power system modeling Neural networks Simulated annealing Very large scale integration Image recognition Multimedia systems Face recognition Computer networks

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modeling a distributed human-machine system using knowledge engineering techniques

Modeling a distributed human-machine system using knowledge ...

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3rd Annual symposium on human Interaction with Complex Systems (HICS 96)

作者： Murray, J Liu, YL UNIV MICHIGAN DEPT IND & OPERAT ENGNANN ARBORMI 48109

ISBN: (纸本)0818674938

This paper describes an approach to modeling human-machine system operations that extends the range of applicability of the supervisory control paradigm. The focus is upon heterogeneous environments, where information and influence over the system is distributed among several diverse organizations. These are characterized as intelligent agents, and the approach centers on how the information exchange and shared analysis takes place among them. The paper discusses two tests to verify the practicality of our paradigm in a realistic setting. The tests are part of a study that centers on the human-centered design methods used to construct a prototype machine-intelligent assistant for use in advanced traffic management.

关键词： human computer interaction

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EM-ANN models for microstrip vias and interconnects in dataset circuits

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IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 1996年第12期44卷 2495-2503页

作者： Watson, PM Gupta, KC UNIV COLORADO DEPT ELECT & COMP ENGNBOULDERCO 80309 WRIGHT LAB AADIWRIGHT PATTERSON AFBOH

A novel approach for accurate and efficient modeling of monolithic microwave/millimeter wave integrated circuit (MMIC) components by using electromagnetically trained artificial neural network (EM-ANN) software modules is presented, Full-wave EM analysis is employed to characterize MMIC components, Structures for simulation are chosen using design of experiments (DOE) methodology. EM-ANN models are then trained using physical parameters as inputs and S-parameters as outputs. Once trained, the EM-ANN models are inserted into a commercial microwave circuit simulator where they provide results approaching the accuracy of the EM simulation tool used for characterization of the MMIC components without increasing the analysis time significantly. The proposed technique is capable of providing simulation models for MMIC components where models do not exist or are not accurate over the desired region of operation, The approach has been verified by developing models for microstrip vias and interconnects in dataset circuits, A new hybrid (as) modeling approach which makes use of existing approximate models for components is introduced and shown to be a more efficient method for developing EM-ANN models, An example of using EM-ANN models to optimize the component geometry is included.

关键词： Analytical models circuit analysis computing circuit CAD Circuit simulation component geometry dataset circuits design of experiments digital simulation Electromagnetic modeling electromagnetically trained artificial neural network EM-ANN models hybrid modeling approach integrated circuit design integrated circuit interconnections Integrated circuit modeling integrated circuit modelling Microstrip microstrip discontinuities microstrip interconnects microstrip vias microwave circuit simulator Microwave integrated circuits millimeter wave integrated circuit Millimeter wave technology MIMIC MIMICs MMIC MMICs S-parameters

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Mechanisms for dynamically changing initiative in human-computer collaborative discourse

Mechanisms for dynamically changing initiative in human-comp...

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Annual symposium on human Interaction with Complex Systems (HICS)

作者： C.I. Guinn Center for Digital Systems Engineering Research and Triangle Institute NC USA Department of Computer Science Duke University Durham NC USA

In this paper, we examine three inter-related efficiency-improving dialogue behaviors: automatic dialogue initiative setting, negotiation for conflict resolution, and summaries for plan recognition assistance. We show how to incorporate these behaviors in a task-oriented human-computer dialogue system, and we evaluate these mechanisms both analytically and via computer-computer dialogue simulation.

关键词： Collaboration Wire Computer displays Automatic control Circuits Connectors Computer science digital systems Systems engineering and theory modeling

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Wavelets in music analysis and synthesis: Timbre analysis and perspectives

Wavelets in music analysis and synthesis: Timbre analysis an...

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SPIE's 1996 International symposium on Optical Science, engineering, and Instrumentation

作者： Alves Faria, Regis R. Ruschioni, Ruggero A. Zuffo, Joao A. Dept. of Electronic Engineering University of São Paulo Av. Prof. Luciano Gualberto 158 tv 3 05508-900 - São Paulo SP Brazil

Music is a vital element in the process of comprehending the world where we live and interact with. Frequency it exerts a subtle but expressive influence over a society's evolution line. Analysis and synthesis of music and musical instruments has always been associated with forefront technologies available at each period of human history, and there is no surprise in witnessing now the use of digital technologies and sophisticated mathematical tools supporting its development. Fourier techniques have been employed for years as a tool to analyze timbres' spectral characteristics, and re-synthesize them from these extracted parameters. Recently many modern implementations, based on spectral modeling techniques, have been leading to the development of new generations of music synthesizers, capable of reproducing natural sounds with high fidelity, and producing novel timbres as well. Wavelets are a promising tool on the development of new generations of music synthesizers, counting on its advantages over the Fourier techniques in representing non-periodic and transient signals, with complex fine textures, as found in music. In this paper we propose and introduce the use of wavelets addressing its perspectives towards musical applications. The central idea is to investigate the capacities of wavelets in analyzing, extracting features and altering fine timbre components in a multiresolution time- scale, so as to produce high quality synthesized musical sounds. ©2005 Copyright SPIE - The International Society for Optical engineering.

关键词： Music

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modeling a distributed human-machine system using knowledge engineering techniques

Modeling a distributed human-machine system using knowledge ...

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Annual symposium on human Interaction with Complex Systems (HICS)

作者： J. Murray Yili Liu Department of Industrial & Operations Engineering University of Michigan Ann Arbor MI USA

Describes an approach to modeling human-machine system operations that extends the range of applicability of the supervisory control paradigm. The focus is upon heterogeneous environments, where information and influence over the system is distributed among several diverse organizations. These are characterized as intelligent agents, and the approach centers on how the information exchange and shared analysis takes place among them. This paper discusses two tests to verify the practicality of our paradigm in a realistic setting. The tests are part of a study that centers on the human-centered design methods used to construct a prototype machine-intelligent assistant for use in advanced traffic management.

关键词： Man machine systems Knowledge engineering humans Traffic control Supervisory control Intelligent agent Information analysis Testing Prototypes Disaster management

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Fuzzy control of a mobile robot with multiple trailers-stability analysis and parallel distributed compensation

Fuzzy control of a mobile robot with multiple trailers-stabi...

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IEEE International symposium on Intelligent Control (ISIC)

作者： K. Tanakai T. Kosaki H.O. Wang Dept. of Human & Mech. Syst. Eng. Kanazawa Univ. Japan Department of Human and Mechanical Systems Engineering Kanazawa University Kanazawa Japan United Technologies Research Center Inc. East Hartford CT USA

Control systems for backing mobile robots with multiple trailers are designed by applying a design technique of model-based fuzzy control and stability analysis. The simulation results show that the designed fuzzy con... 详细信息

关键词： Fuzzy control Mobile robots Stability analysis Computational modeling Argon humans Mechanical systems design engineering Systems engineering and theory Control system synthesis

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Workload prediction as a function of system complexity

Workload prediction as a function of system complexity

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Annual symposium on human Interaction with Complex Systems (HICS)

作者： C.A. Ntuen A.R. Watson The Institute of Human-Machine Studies Department of Industrial Engineering North Carolina Agriculture and Technical State University Greensboro NC USA

This paper describes a workload model as a function of the system complexity and task difficulty. The workload index derived is general to the various dimensions of workload measures, task dynamicity, and instabilities associated with the system of interest. We show that the variations in workload changes as the system and task parameter change.

关键词： humans Standards development Power system modeling System analysis and design Energy loss Man machine systems Industrial engineering Sensitivity analysis Performance loss Root mean square

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A new lock detection algorithm for QPSK digital demodulator

A new lock detection algorithm for QPSK digital demodulator

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IEEE International symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Yi KyungHa Jung SeungChul Kim YongHoon Choi Hyung Jin Department of Electronics Engineering SungKyunKwan University Suwon Kyunggi South Korea Sungkyunkwan University Jongno-gu Seoul KR

ISBN: (纸本)0780336925

A new lock detection algorithm for a digital QPSK receiver is proposed. Analysis of the detector's output characteristics is given and is verified by using computer simulation. Performance degradation due to carrier jitter is also considered. Analytic and simulated results show that the proposed algorithm is very useful as a lock detector in the digital receiver because it has a good detection performance and a simple structure.

关键词： Detection algorithms Quadrature phase shift keying Demodulation Computer simulation Degradation Jitter Performance analysis Algorithm design and analysis Computational modeling Analytical models

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