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IEEE ComSoc International Workshop on Multimedia Communications

作者： U. Rothlisberger Laboratory of Computer Engineering and Networks ETH Zurich Zurich Switzerland

The paper introduces and analyzes the synchronization concept used in a new B-ISDN multimedia communication system. The methods proposed have been simulated and then implemented in the actual prototype system. As opposed to the common time stamping concepts, we use a hierarchical approach that first smooths each stream timing and then synchronizes the streams to each other by delaying the "earlier" ones. The concept is based on the "Adaptive Method", but it has been extended and improved to support framed video and audio as well as unstructured, constant bit rate voice streams without additional framing overhead. Another interesting point is that the multimedia storage device can preserve the relative timing information between the streams, i.e. there is no difference whether the transmission is live or stored. It is also a convenience of this synchronization and storage concept, that the operating system can keep the stored video and audio tracks themselves, as well as their directory information on the same disk.

关键词： Multimedia communication Multimedia systems Streaming media Timing computer networks Delay Bit rate Operating systems Bandwidth Intelligent networks

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A coupled gradient network for the solution of the temporal unit commitment problem in power systems planning

A coupled gradient network for the solution of the temporal ...

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International Joint Conference on Neural networks (IJCNN)

作者： P.B. Watta M.H. Hassoun Computation and Neural Networks Laboratory Department of Electrical and Computer Engineering Wayne State University Detroit MI USA

This paper deals with a neural network solution for a problem specific to the power industry. In particular, the unit commitment problem is addressed. This paper is an extension of the results given in Watta and Hassona (1994), where the static unit commitment problem was discussed. The temporal problem involves the scheduling of unit commitment over a planning horizon of more than one hour. Using a cascade and interconnect strategy, the coupled gradient network given in the above paper and Watta (1994) is extended to handle the temporal case. As before, though, the dynamics of the network are defined by gradient descent on a global energy function, and hence the network converges to locally optimal solutions. After formulating the model, the parameter selection involved in actually simulating the network is discussed. Finally, this paper concludes with a discussion of some simulation results.< >

关键词： Intelligent networks Power systems Power generation Cost function Power system planning Optimal scheduling Power generation economics computer networks Power engineering computing Neural networks

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Nonlinear Hebbian rule: a statistical interpretation

Nonlinear Hebbian rule: a statistical interpretation

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International Joint Conference on Neural networks (IJCNN)

作者： A. Sudjianto M.H. Hassoun Computation and Neural Networks Laboratory Department of Electrical and Computer Engineering Wayne State University Detroit MI USA

Recently, the extension of Hebbian learning to nonlinear units has received increased attention. Some successful applications of this learning rule have been reported as well; however, a fundamental understanding of the capability of this learning rule is still lacking. In this paper, we pursue a better understanding of what the network is actually doing by exploring the statistical characteristics of the criterion function and interpreting the nonlinear unit as a probability integral transformation. To improve the capability of the nonlinear units, data preprocessing is suggested. A better data preprocessing leads to the development of a two-layer network which consists of linear units in the first layer and nonlinear units in the second layer. The linear units capture and filter the linear aspect of the data and the nonlinear units discover the nonlinear effects, such as clustering and other general nonlinear associations among the variables. Several potential applications are demonstrated through the simulation results given throughout this paper.< >

关键词： Hebbian theory Data preprocessing Data mining Laboratories Application software Nonlinear filters Unsupervised learning Training data Vectors Neural networks

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SINA: Super-highway Information Networking Architecture

SINA: Super-highway Information Networking Architecture

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International Conference on Universal Personal Communications

作者： Sung Won Park Geon Ung Kim Sun Shin An Man Sang Chung Eun Ho Choi Computer Network Laboratory Department of Electronic Engineering Korea University Seoul South Korea Telecommunication Networks Laboratory Korea Telecom South Korea

ISBN: (纸本)0780318234

We propose the SINA (Superhighway Information Networking Architecture) as a model of the architecture for an information network in telecommunication network environment and present its prototype. The SINA provides the functions for interaction between the SMFAs (system management functional areas) and operator and the functions for monitoring and collecting information about VC (virtual channel) and VP (virtual path) of the physical managed objects as well as the functions for configuration, fault, performance, security, and accounting management. The prototype of the SINA uses TCP/IP in UNIX environment as a DCN (data communication network). Each of the functional building blocks is interfaced with the DPE (distributed processing environment) through CMISE (common management information service element). Detailed structures and specifications of the SINA are currently being developed. We are now building the DPE.< >

关键词： Prototypes Virtual colonoscopy Communication system security Data security Information security TCPIP Data communication Distributed processing Environmental management Information management

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Guest editorial

Computer Networks and ISDN Systems

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computer networks and ISDN Systems 1994年第3期27卷 343-344页

作者： Plattner, Bernhard R. Computer Engineering and Networks Laboratory ETH Zurich ETH-Zentrum CH-8092 Zurich Switzerland

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Sharing audio/video applications among heterogeneous platforms

Sharing audio/video applications among heterogeneous platfor...

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IEEE ComSoc International Workshop on Multimedia Communications

作者： G. Dermler T. Gutekunst E. Ostrowski F. Ruge Ipvr University of Stuttgart Stuttgart Germany Computer Engineering and Networks Laboratory Tik Swiss Federal Institute of Technology Zurich Switzerland Technical University Berlin Berlin Germany

JVTOS (Joint Viewing and Tele-Operation Service), which is being implemented within CEC/RACE II project CIO (R2060), is a new teleservice for high-speed networks enabling distributed users to work in a collaborative fashion with multimedia. Core functionality of JVTOS is provided by an application sharing service that allows multimedia applications to be displayed and interacted with on multiple users' workstations simultaneously. The focus of this paper is on the audio/video elements of shared applications. We discuss the problems of sharing multimedia applications and describe our conception that supports interoperability between heterogeneous platforms.

关键词： Video sharing Application software Workstations Collaborative work High-speed networks Multimedia systems computer networks Laboratories computer applications Packaging

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TECHNICAL ISSUES REGARDING SATELLITE PACKET-SWITCHING

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INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 257-267页

作者： IVANCIC, WD CHU, P SHYY, DJ National Aeronautics and Space Administration Lewis Research Center Cleveland Ohio 44135 USA. A design engineer in the Digital Technology Branch of the Space Electronics Division. He has extensive experience in satellite communications systems modulation and coding on-board switching and routeing and high speed digital design. Since joining NASA in 1982 Mr. Ivancic has been responsible for the development of a variety of matrix switch controllers ground terminal equipment numerous pieces of special test equipment a beacon controller for the SARSAT program (Search and Rescue Satellite) and a time-shared decoder for a processing satellite. In addition Mr. Ivancic has been technical contract monitor on a number of advanced communications technology contracts including the Advanced Modulation Technology Development a 5 GHz fibre-optic link and multi-programmable modem study. He was awarded the B.S.E.E. and M.S.E.E. degrees by Cleveland State University in 1982 and 1986 respectively. Cleveland State University Cleveland Ohio 44115 USA. Currently an assistant professor of Electrical Engineering Department at Cleveland State University. He obtained the M.S. and Ph.D. degrees from Iowa State University majoring in Electrical and Computer Engineering. His research interests include high-speed computer networks digital systems and neural networks applications. He is a member of Sigma Xi Phi Kappa Phi as well as the IEEE and ACM. ComSearch Reston Virginia 22091 USA. Received the B.S. degree in electrical engineering from National Chiao-Tung University Hsin-Chu Taiwan in 1983 and the M.S. and Ph.D. degrees in electrical engineering from Georgia Institute of Technology Atlanta GA in 1986 and 1990 respectively. From June 1987 to October 1987 he worked for the Department of Neurology Emory University Atlanta as a Programmer. From September 1989 to December 1989 he worked for the Advanced Development Laboratory. AMP Inc. Atlanta as a Test Engineer. From February 1990 to August 1993 he wor

Many concepts for advanced communication satellite networks have recently been proposed. Critical technical issues relating to satellite packet switching for meshed very small aperture terminal networks and broadband ... 详细信息

关键词： FAST PACKET SWITCH BISDN MESHED VSAT ON-BOARD PROCESSING

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MEGAPHONE: A multimedia application based on object-oriented communication 3rd

MEGAPHONE: A multimedia application based on object-oriented...

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3rd International Workshop on Network and Operating System Support for Digital Audio and Video, 1992

作者： Ingold, Daniel P. ETH Zuerich Laboratory of Computer Engineering and Communication Networks Gloriastr. 35 ZuerichCH-8092 Switzerland

ISBN: (纸本)9783540571834

‘MEGAPHONE’ is a pilot multimedia application combining the functions of a video phone with the features of a workstation. It is built upon an object oriented framework that provides workstation-based personal multimedia communication. The video phone functions are fully integrated into the user interface of the workstation used. In addition to the face-to-face meeting mode known from video conference studios, the application offers a shared workspace for discussion, presentation and exchange of digital documents. The integration of telecommunication services with computer conference applications shows useful insights into the architecture of upcoming multimedia applications and their demands on the underlying operating system and network software. © Springer-Verlag Berlin Heidelberg 1993.

关键词： User interfaces

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Implementation of O(n) complexity max/min circuits for fuzzy and connectionist computing

Implementation of O(n) complexity max/min circuits for fuzzy...

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IEEE International Conference on Neural networks, ICNN 1993

作者： Hassoun, Mohamad H. Nabha, Ali M. Computation and Neural Networks Laboratory Department of Electrical and Computer Engineering Wayne State University DetroitMI48202 United States

ISBN: (纸本)0780309995

This paper proposes O(n) complexity electronic circuits for maximum (minimum) selection/propagation of n analog input voltages. The proposed Min/Max circuits employ electronic amplifiers and diodes and are easily realizable with CMOS VLSI technology. Theoretical analysis and experimental results with off-the-shelf components are presented. These circuits are of low complexity in the sense that the number of transistors and/or connections required scales linearly in the number of inputs n. An analytical expression for the accuracy of the proposed circuits in terms of the number of inputs and amplifier gain is derived, which shows that high-resolution low-complexity analog max/min modules are feasible. Our results hinge on the ability to map a sequential algorithm for the computation of Max (Min) functions (based on a mathematical theorem by Hardy, 1952) onto a simple collective computing architecture. © 1993 IEEE.

关键词： Timing circuits

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Modules as building blocks for protocol configuration

Modules as building blocks for protocol configuration

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International Conference on Network Protocols

作者： T. Plagemann M. Vogt B. Plattner T. Walter Computer Engineering and Networks Laboratory Swiss Federal Institute of Technology Switzerland

Da CaPo provides an environment for the dynamic configuration of protocols. Configuration is done with respect to application requirements, properties of the offered network services, and the available resources in the end systems. The goal of the configuration is to provide a service with minimal necessary functionality for each request, i.e., to diminish protocol complexity and so to increase protocol performance. Modules serve as basic building blocks for the protocol configuration. Common software engineering principles like encapsulation and information hiding as well as a unified module interface allow the unconstrained configuration of modules to protocols. The Da CaPo runtime environment links modules to protocols in one UNIX process and realizes an efficient data transport inside the end systems because performance reducing operations like data copying or process switches are minimized.< >

关键词： Operating systems Testing Runtime environment Environmental management Resource management computer networks Encapsulation Transport protocols Switches High-speed networks

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