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IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： A. Naka N. Saiwaki S. Nishida Department of Systems and Human Science Graduate School of Engineering Science Osaka University Toyonaka Osaka Japan

Deals with data management structures for efficient search for large scale spatio-temporal data. We propose the adaptive tree structure, in which either spatio data structure or temporal data structure is selected adaptively depending on the demand of search. This paper describes an outline of the proposed data structure for large scale spatio-temporal data. The data structure and its performance by computer simulation are discussed.

关键词： Data structures Tree data structures engineering management Humans Large-scale systems Computer simulation Data engineering Concrete Design automation Geographic Information systems

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Spatio-temporal data management for highly interactive environment

Spatio-temporal data management for highly interactive envir...

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IEEE International Conference on systems, Man and Cybernetics

作者： A. Naka N. Saiwaki S. Nishida Department of Systems and Human Science Graduate School of Engineering Science OSAKA University Toyonaka Osaka Japan

This paper deals with data management structures for efficient search for large scale spatio-temporal data. We propose adaptive tree structure (We call the AT Structure), in which either spatio data structure or temporal data structure is selected adaptively depending on the demand of search. This paper describes an outline of the proposed data structure for large scale spatio-temporal data. The concrete data structure and its performance by computer simulation are discussed.

关键词： Environmental management Data structures Tree data structures Large-scale systems Computer simulation Humans Data engineering engineering management Concrete Design automation

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An adoption model of telework for organizations

An adoption model of telework for organizations

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Annual Hawaii International Conference on System Sciences (HICSS)

作者： Bongsik Shin K. Higa O.R.L. Sheng Department of Management Information Systems Karl Eller Graduate School of Management University of Arizona Tucson Tucson AZ USA Department of Industrial Engineering and Management Tokyo Institute of Technology Tokyo Japan

Despite the variety of potential benefits to society, organizations, and individuals, telework growth has been moderate. We posit that the materialization of telework potential is viable when management recognizes its innovative value and accordingly changes the implementation paradigm from selection to adaptation and from ad hoc based temporary solution of an individual problem to the strategic tool that can improve organizational effectiveness. Based on the changed paradigm, we suggest a conceptual model of intraorganizational adoption/diffusion of telework that describes a causal relationship among important agents and organizational variables.

关键词： Teleworking Technology management engineering management Innovation management management information systems Industrial engineering Industrial relations Social implications of technology Technological innovation Time measurement

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A parallel algorithm for embedding large pyramids into smaller hypercubes with load balancing

A parallel algorithm for embedding large pyramids into small...

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International Symposium on Parallel Architectures, Algorithms and Networks (ISPAN)

作者： Y.W. Chen K.L. Chung Department of Information Management Graduate Program of Information Engineering National Taiwan University of Science and Technology Taipei Taiwan

Consider a pyramid with n levels and a k-dimensional hypercube, 0/spl les/k/spl les/2n-2. The paper presents a parallel algorithm for embedding large pyramids into smaller hypercubes with load balancing. With dilation 4, congestion at most 2/sup n-k/2/+4, and load [2/sup 2n-k//3] when k is even, our algorithm embeds the pyramid into the hypercube, otherwise, with the same dilation and load, it has congestion 2/sup n-(k+1)///sup 2+1/+6 when k is odd. The algorithm can be performed in O(k)-bit time.

关键词： Parallel algorithms Hypercubes Load management Information management Image processing Pattern recognition Terminology

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Analysis on media choice by two telework groups

Analysis on media choice by two telework groups

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Annual Hawaii International Conference on System Sciences (HICSS)

作者： Bongsik Shin K. Higa Department of Management Information Systems Karl Eller Graduate School of Management University of Arizona Tucson Tucson AZ USA Graduate School of Decision Science and Technology Department sf Industrial Engineering and Management Tokyo Institute of Technology Tokyo Japan

Summary form only given. With the rapid proliferation of computer networks, the potential of electronic communication media to increase the effectiveness of internal processes of organizations and the performance of group activities has been frequently discussed. Especially with the increased adoption of distributive telework across organizations, effective use of low cost and general purpose communication media is becoming an important issue for a successive organizational process. A contingency study is made to investigate the role of the management support and communication characteristics on media use by teleworkers. The study is focused on two general purpose communication media: email and telephone.

关键词： Teleworking Computer network management Technology management engineering management Telephony management information systems Industrial engineering Industrial electronics Contingency management Electronic mail

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A location management method using network hierarchies

A location management method using network hierarchies

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IEEE Pacific Rim Conference on Communications, Computers and Signal Processing

作者： H. Hagino T. Hara M. Tsukamoto S. Nishio J. Okui Department of Information Systems Engineering Graduate School of Engineering Osaka University Japan Central Research Laboratories Corporate Research Division Matsushita Elecrric Indusrrial Company Limited Japan

Recent advances in network and computer technologies have led to the development of the mobile computing environment. In this environment, the location management is one of the most important issues. In this paper, for reducing the traffic volume of the location management, we propose a hierarchical location management method. This method divides a network into multiple groups (areas) where each area has at least one router. The locations of mobile hosts in an area are managed within the area, independently from those in other areas. Furthermore, the most suitable location management method for an area is used in this area. We also show results of simulation experiments for verifying the efficiency of the method. These results show that our proposed method can reduce the traffic volume of the location management.

关键词： Telecommunication traffic Mobile computing Computer networks Traffic control Computer network management Environmental management Portable computers Frequency Educational institutions management information systems

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Empirical testing: The prototyper's evaluation mechanism

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NAVAL ENGINEERS JOURNAL 1997年第1期109卷 41-46页

作者： Hafner, AN Arnold N. Hafner Ph.D.:is founder and president of Information Systems Research (ISR). He has twenty-five years of experience in systems development and is published in the field of systems development management. He served as corporate research scientist at Systems Exploration Inc. from 1988 to 1991 program director at Computer Science Corporation from 1983 to 1988 director of operations at Republic Management Systems Corporation from 1981 to 1983 and program manager at Computer Science Corporation from 1972 to 1981. A 1962 graduate of the US. Naval Academy he holds a doctoral degree in human behavior and engineering degrees in electronics and communications. He has taught courses on information systems and systems management at most of the colleges in the San Diego area. Dr. Hafner has presented fourteen refereed research papers while publishing sixteen articles and a book A Manager's Guide to Software System Development.

Evaluating complex systems is the subject of this paper, the third in a series investigating prototyping. It provides an interesting and helpful overview of how to evaluate systems prototypes and outlines the iterative stream of developer-user interactions that is replacing older approaches to testing and evaluating new military systems, which promise to reduce the time required to develop and field future military capabilities. Changes to the acquisition process, such as those the paper sketches, will facilitate the nation's rapid transit through its current revolution in military affairs.

关键词： systems analysis

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The reliability problem in distributed database systems

The reliability problem in distributed database systems

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International Conference on Information, Communications and Signal Processing

作者： Min-Sheng Lin Deng-Jyi Chen Department of Management Information Systems Tamsui Oxford University College Taipei Taiwan Institute of Computer Science and Information Engineering National Chiao Tung University Hsinchu Taiwan

ISBN: (纸本)0780336763

The reliability of a distributed database systems is the probability that a program which runs on multiple processing elements and needs to communicate with other processing elements for remote database will be executed successfully. This reliability varies according to (1) the topology of the distributed database system, (2) the reliability of the communication links, (3) the databases and program distribution among processing elements, and (4) the databases required to execute a program. This paper shows that solving this reliability problem is NP-hard even when the distributed database system is restricted to a series-parallel, a 2-tree, a tree, or a star structure. Two polynomial-time algorithms are proposed for computing the reliability of a distributed program which runs on a linear and a ring distributed database system, respectively.

关键词： Database systems Distributed databases Polynomials Telecommunication network reliability management information systems Educational institutions Computer science Data engineering Reliability engineering Topology

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Estimating the number of faults using simulator based on generalized stochastic Petri-net model

Estimating the number of faults using simulator based on gen...

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Asian Test Symposium (ATS)

作者： O. Mizuno S. Kusumoto T. Kikuno Y. Takagi K. Sakamoto Department of Informatics and Mathematical Science Graduate School of Engineering Science Osaka University Japan Development and Production H. Q. Social Systems Business Group OMRON Corporation Japan

In order to manage software projects quantitatively, we have presented a new model far software project based on generalized stochastic Petri-net model which can take influence of human factors into account, and we have already developed software project simulator based on GSPN model. This paper proposes methods for calculating model parameters in the new model and estimating the number of faults in the design and debug phases of software process. Then we present experimental evaluation of proposed method using a data of actual software development project on a certain company. As the result of case study, we confirmed its effectiveness with respect to estimating the number of faults in the software process.

关键词： Stochastic processes Testing Mathematical model programming Software quality Stochastic systems Software development management Phase estimation Costs Informatics

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Environmental compliance: Requirements and technology opportunities for future ships

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 349-369页

作者： Nickens, AD Pizzino, JF Crane, CH Anthony D. Nickens:is the research and development progrma a manager for the Navy's Environmental Protection Program at the Naval Sea Systems Command's Ship Research Development and Standards Group (Sea 03R).He is responsible for overseeing directing and funding the design and development of shipboard systems and precedures to assure compliance with maritime environmental laws and regulations He holds an M.B.A. degree from the Florida Institute of Technology an M.S. degree in chemical engineering from the University of Florida and a B.S. degree i chemical engineering magna cum laude from the North Carolina State University. In addition he successufully completed the twenty-week Program Management Course at the Defense Systems management College in Fort Belvoir Virginia and the Executive Program at the University of Virginia Darden Graduate School of Business. He is also an engineering duty officer in the Navy reserves and a previous author and frequent contributor to Naval Engineers Journal. Josepe F. Pizzino:is a Naval Surface Warfare Center Carderock Division Employee working at the Naval Sea Systems Command's Ship Research Development and Standards Group (Sea 03R). He is a research and development program manager for the Navy's Environment Protection Program responsible for overseeing directing and funding the design and development of shipboard systems and procedures to assure combliance with maritime environment laws and regulations. Prior to his present assignment he was project engineer for the development os shipboard and life-boat reverse osmosis desalination systems both of which are persently being unstalled aboard Navy ships. He holds a B.S. in chemical engineering from the University of Marland and an M.S. degree in chimical engineering from The Catholic Uhiversity of America. Chirstopher H. Crane:is a senior scientist at Geo-Centrs Inc. where he has provided technical program and dcumentation support for Navy headquarters shipboard environmental programs since 1989. Previouss grover

Navy ships must be able to operate anywhere in the world and visit any port unencumbered by environmental restrictions. The Office of the Chief of Naval Operations (OCNO) has formulated a vision for the environmentally sound ship of the 21st century, which will ensure compliance with environmental requirements applicable to Navy ships, while maintaining fleet effectiveness and readiness. Navy ships generate a variety of solid and liquid wastes and atmospheric emissions. Ships have limited capabilities for holding wastes for offload to shore. Working closely with the OCNO, the Naval Sea systems Command (NavSea) is developing systems, equipment, and procedures to process and manage ship wastes in an environmentally responsible manner. Several pieces of shipboard equipment have been successfully developed to process solid and liquid waste, hazardous materials and ozone-depleting substances (ODSs). The technologies and practices being developed under this program will: ensure compliance with environmental laws and regulations, significantly reduce the logistic burdens and costs associated with shoreside offload and disposal of ship wastes, implement Navy environmental and occupational safety and health policies, enhance the quality of life aboard ship, and continue the Navy's leadership role in protecting the marine environment.

关键词： Naval vessels

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