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作者： Patel, Ahmed Kantzavelou, Ioanna Computer Networks and Distributed Systems Research Group Department of Computer Science University College Dublin Belfield Dublin 4 Ireland

A Health Care Establishment (HCE) is an establishment where medical services are rendered. The above services are provided by the health care personnel. The infrastructure of a HCE may include Information Technology (IT) equipment that stores and processes HC information. Previously, IT equipment consisted solely of stand-alone systems, whereas in recent years, the trend has been towards computer networks and distributed systems in HCEs. The spread of distributed information technology in HCEs have necessitated the implementation of Security in HCISs, to assure confidentiality, integrity and availability of HCE information. This paper discusses the issues of Security and Network Security in Health Care Information systems (HCISs). It also suggests a method in establishing Network Security Guidelines and describes Principles for the provision of Network Security in HCEs. © 1996, The SEISMED Consortium.

关键词： Network security

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A distributed MEDIA ACCESS PROTOCOL FOR PACKET RADIO networks AND PERFORMANCE ANALYSIS .2. NETWORK SET-UP TIME AND DATA RATE

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INTERNATIONAL JOURNAL OF COMMUNICATION systems 1995年第1期8卷 49-63页

作者： POND, LC LI, VOK Communication Sciences Electrical Engineering Systems University of Southern California Los Angeles CA 90089-2565 U.S.A. Lawrence C. Pond received the M.Sc. and Ph.D. degrees in electrical engineering from the University of Southern California in 1983 and 1990 respectively. Dr. Pond is currently a scientist at Hughes Space and Communications Company having joined in 1980. He has worked in the fields of communication system design mobile communication network and spacecraft payload design. He is currently working on the development of satellite-based ATM transport and switching architectures for BISDN and Defense Information System Network amlications. Dr. Pond is a member of IEEE. Victor O. K. Li was born in Hong Kong in 1954. He received his SB SM and Sc.D. degrees in Electrical Engineering and Computer Science from the Massachusetts Institute of Technology Cambridge Massachusetts in 1977 1979 and 1981 respectively. Since February 1981 he has been with the University of Southern California (USC) LOS Angeles California where he is Professor of Electrical Engineering and Director of the USC Communication Sciences Institute. He has published 150 technical papers and has lectured and consulted extensively around the world. His research interests include high-speed communication networks personal communication networks intelligent networks distributed databases queueing theory graph theory and applied probability. Dr. Li is very active in the Institute of Electrical and Electronic Engineers (IEEE) having been a member of the Computer Communications Technical Committee since 1983 and having served as Chairman from 1987–1989. He served as Chairman of the Los Angeles Chapter of the IEEE Information Theory Group from 1983–1985. He is the Steering Committee Chair of the International Conference on Computer Communications and Networks (IC3 N) General Chair of the 1st Annual IC3N held in San Diego California in June 1992 General Chair and Technical Program Chair of the 4th IEEE Workshop on Comp

In this, the second part of a two-part paper, the required time for establishing a mobile packet radio network using the virtual circuit and time division multiple access protocol developed in Part 1 is analysed. Tools are developed to determine the virtual circuit and network set-up times in terms of the channel bandwidth allocated to establish and maintain the network. The tools are then extended to include the effects of user mobility. Then these results are combined with the network capacity results of Part 1 to analyse the trade-off between the data rate and set-up time of the network. Next a hierarchical architecture is proposed and the network data rate versus set-up time trade-off of this architecture is analysed using these tools. This architecture is shown to both provide a higher data rate and establish faster than flat networks of the same number of nodes.

关键词： PACKET RADIO NETWORK EPLRS distributed NETWORK TDMA VIRTUAL CIRCUITS MULTIHOP NETWORK BOUNDED DELAY MOBILITY NETWORK SET-UP TIME HIERARCHICAL NETWORK NETWORK DATA RATE

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distributed logic circuit simulation on a network of workstations

Distributed logic circuit simulation on a network of worksta...

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1995 Euromicro Workshop on Parallel and distributed Processing

作者： Boianov, Lüben Jelly, Lines Laboratory for Distributed Systems and Computer Networks CICT Bulgarian Academy of Sciences Acad. G. Bonchev Str. bl. 25-A Sofia1113 Bulgaria Computing Research Centre School of Computing and Management Sciences Sheffield Hallam University SheffieldS11 8HD United Kingdom

ISBN: (纸本)0818670312

The implementation of a distributed digital logic simulation algorithm on a network of workstations is presented. The simulation of digital circuits is done using a demand driven approach. The simulation is performed on a network of workstations using the Parallel Virtual Machine (PVM) software. The use of the PVM as a platform for parallel and distributed applications is assessed in the light of the test results. The feasibility of running parallel logical simulation algorithms on such platform is considered. © 1995 IEEE.

关键词： Timing circuits

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distributed logic circuit simulation on a network of workstations

Distributed logic circuit simulation on a network of worksta...

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Euromicro Workshop on Parallel and distributed Processing

作者： L. Boianov I. Jelly Laboratory for Distributed Systems and Computer Networks CICI Bulgarian Academy of Sciences Sofia Bulgaria Computing Research Centre School of Computing and Management Sciences Sheffield Hallam University Sheffield UK

关键词： Logic circuits Circuit simulation Workstations Computational modeling computer network management Digital circuits Application software Parallel algorithms Parallel processing Partitioning algorithms

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SECURITY MANAGEMENT FOR OSI networks

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computer COMMUNICATIONS 1994年第7期17卷 544-553页

作者： PATEL, A Computer Networks and Distributed Systems Research Group Department of Computer Science University College Dublin Belfield Dublin 4 Ireland

Security management is one of the key functional areas in open systems network management. Two key aspects of security management are managing user security services and providing security to network management systems. These are examined in tum to give the reader an overview of the state-of-the-art in security management. The ISO OSI Reference Model is used as a basis to present the security threats, security services and mechanisms which have to be managed. Telecommunications management networks are used as an example of management applications which both provide management and require the provision of security and security management services. The OSI approach to network management is examined in detail. This is followed by a survey of the categories of OSI security management activities, and a discussion of the security management needs of various common security services. The need for security for network management systems is examined.

关键词： SECURITY MANAGEMENT NETWORK MANAGEMENT OPEN systems ODP OSI TMN

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Windows computer laboratory as a tutorial for undergraduate electromagnetics

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computer Applications in Engineering Education 1995年第3期3卷 183-183页

作者： McCulloch, J. Keddy, W.A. Stuchly, M.A. University of Victoria Department of Electrical and Computer Engineering University of Victoria Victoria British Columbia Canada Janet McCulloch:is a native of Toronto Canada where she briefly attended both York University and the University of Toronto before she set off on a year-long adventure through the Middle East and North Africa. When she returned to Canada she relocated to California. She spent a number of years living both in Los Angeles and coastal Northern California interspersed with several extended trips through the United States Mexico and Central America. Ms. McCulloch moved to Victoria British Columbia in 1989 and a year later registered in the cooperative education program in Electrical Engineering at the University of Victoria. She is presently in the fifth and final year of the program and has her sights set on graduate school. Besides the work described in this article she has been very much involved in the use of technology to assist in the delivery of curriculum at the senior secondary level. She lives on a country property a half-hour from the University with her husband her horse and three cats. W. Alfred Keddy:is an applications programmer/analyst for the Department of Electrical and Computer Engineering at the University of Victoria. He received a BEng (1988) in Electrical Engineering and an MASc (1994) from the University of Victoria. His research interests include distributed systems image processing local area networks VLSI and DSP system design for computation and communication and human–computer interface design. Maria A. Stuchly:received an MSc in Electrical Engineering in 1962 from Warsaw Technical University and a PhD in Electrical Engineering from the Polish Academy of Sciences in 1970. Between the years of 1962 and 1970 she was with the Warsaw Technical University an Institute of the Polish Academy of Sciences. After immigrating to Canada during 1970 her first position was with the University of Manitoba. In 1976 she became employed by the Bureau of Radi

Contents and implementation of a computer laboratory for undergraduate electromagnetics are described. The laboratory consists of four 3-hour sessions covering vector calculus, Maxwell's equations (integral and differential forms), wave propagation in materials, and wave behavior at planar interfaces. Each session contains theory (in the Help file), animations (where relevant) and a quiz. The program runs on IBM compatible 486-based PCs in a Windows environment and uses the Borland C ++ 4.0 compiler.

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A Generic Management System for Heterogeneous networks

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International Journal of Network Management 1994年第3期4卷 158-174页

作者： Bhushan, Bharat Patel, Ahmed Dr Ahmed Patel's main research interests include network management security protocol performance evaluation intelligent networks CSCW and open distributed systems. He has published many technical papers and has co-authored two books on computer network security and one on group communications.

This paper summarizes the key requirements for the system, presents an object‐oriented model of the heterogeneous networks, and gives a brief description of the main functional parts of the system. The model discussed in this paper consists of object classes representing protocol layers such as TCP/IP layers or the data link layer of the X.25 protocol. Copyright © 1994 John Wiley & Sons, Ltd.

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Secure environment for information systems in medicine 3

Secure environment for information systems in medicine

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3rd International Conference on Image Management and Communication in Patient Care: Requirements, Implementation and Assessment of Digital Imaging in Medicine, IMAC 1993

作者： Patel, Ahmed Computer Networks and Distributed Systems Research Group Department of Computer Science University College Dublin Belfield Dublin 4 Ireland

ISBN: (纸本)0818636408

This paper presents the Secure Environment for Information systems in Medicine (SEISMED) project which is funded by the Commission of the European Commzlnities (CEC) under the Advance Informatics in Medicine (AIM) programme. It discusses the aims and objectives of the project, its technical approach and results realised todate. It also gives an overview of the remainder of the work which will be undertaken up to the end of 1994. © 1993 IEEE.

关键词： Information systems

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Secure Environment for Information systems in Medicine

Secure Environment for Information Systems in Medicine

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International Conference on Image Management and Communication in Patient Care

作者： A. Patel Computer Networks & Distributed Systems Research Group Department of Computer Science University College Dublin Dublin Ireland

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A hybrid dataflow architecture with multiple tokens 2nd

A hybrid dataflow architecture with multiple tokens

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2nd Joint International Conference on Vector and Parallel Processing, CONPAR 1992

作者： Bonchev, Boyan Iliev, Miroslav Laboratory for Distributed Systems and Computer Networks Bulgarian Academy of Sciences Sofia1113 Bulgaria

ISBN: (纸本)9783540558958

In the paper, dataflow architecture with multiple tokens is proposed. By supporting nodes with several inputs and more than two successors, with by-reference data access, the redundant synchronization is eliminated, when treating composite data. The model provides asynchronous function activations, thus the potential asynchronous activity is increased. Distinction of tokens of different contexts is accomplished by a direct matching schema for synchronization of multiple tokens. In order to facilitate effective execution of sequential code, the architecture can deal with clusters of instructions using a controlflow scheduling mechanism, executing the clusters without any pending. © Springer-Verlag Berlin Heidelberg 1992.

关键词： computers

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