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SHIP SERVICE electrical SYSTEMS - DESIGNING FOR SURVIVABILITY

NAVAL ENGINEERS JOURNAL 1990年第5期102卷 32-36页

作者： CERMINARA, J KOTACKA, RO John Cerminara:is a principal engineer with Westinghouse Machinery Technology Division Electrical Systems Department. He holds a B.S. degree in electrical engineering from the University of Pittsburgh. He is a registered professional engineer and a member of IEEE ASNE and the Ship Steering Group of the Combat Survivability Division of ADPA. Mr. Cerminara has had over 30 years of multidiscipline experience ranging from engineering and construction in heavy industry to standards and publications. Past assignments include DOE/ NASA wind turbine project manager for Westinghouse and task leader of MTD electrical systems. Most recent assignments have included hull mechanical and electrical (HM&E) distributive system survivability analyses of the LSD-41 mobility mission area and application and validation of NavSea computer-aided design of Survivable Distributive System (CADSDiS) Program. Rolf O. Kotacka:is presently a ship systems engineer in the Ship Systems Engineering Branch of the Naval Sea Systems Command Engineering Directorate where his primary responsibility is ship system survivability. He is a 1977 graduate of SUNY Maritime College where he received his bachelor of engineering degree in marine electrical engineering as well as a U.S. Coast Guard Third Assistant Engineer License and a commission in the U. S. Naval Reserve. Upon graduation Mr. Kotacka was employed by Charleston Naval Shipyard as a field engineer until 1981 where he gained his background in surface ship HM&E systems and equipment. He then transferred to the Supervisor of Shipbuilding Conversion and Repair Groton where he served as a senior electrical engineer monitoring the design and construction of Trident and 688 class submarines and received the Meritorious Unit Citation. Prior to his present position Mr. Kotacka was the life cycle manager for diesel generator sets in the Naval Sea Systems Command's Generators Branch. He has coauthored several papers dealing with power generation for ASE and SNAME. Mr. Kotacka is also a lieutena

This paper highlights the survivability concerns in the design of ship service power systems. The paper gives a brief description of what constitutes a typical ship service electric power system and concentrates on electric power generation and associated controls. Established survivability design principles and guidelines are highlighted and the application of those guidelines are discussed. General Specifications (Gen Specs) for Ships of the U.S. Navy are cited as the cornerstone for design. Specific design criteria are cited as well as the rationale associated with the survivability design guidelines pertaining to power generation and distribution. The application of these survivability design guidelines plus the use of the deactivation diagram/damage tolerance analysis cited in the Gen Spec section 072e will enhance overall design and help ensure survivable electric power systems for surface combatants.

关键词： Warships

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AN APPROACH TO EXPERIMENTAL EVALUATION OF REAL-TIME FAULT-TOLERANT DISTRIBUTED COMPUTING SCHEMES

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IEEE TRANSACTIONS ON SOFTWARE engineering 1989年第6期15卷 715-725页

作者： KIM, KH Computer Engineering Program Department of Electrical Engineering University of California Irvine CA 92717

A testbed-based approach to the evaluation of fault-tolerant distributed computing schemes is discussed. The approach is based on experimental incorporation of system structuring and design techniques into real-time distributed computing testbeds centered around tightly coupled microcomputer networks. The effectiveness of this approach has been confirmed through some experiments conducted in the author's laboratory. Primary advantages of the testbed-based approach include the relatively high accuracy of the data obtained on timing and logical complexity as well as the relatively high degree of assurance that can be obtained on the practical effectiveness of the scheme evaluated. This paper discusses various design issues encountered in the course of establishing the basic microcomputer network testbed facilities and augmenting them to support some experiments conducted. The shortcomings of the testbeds that have been recognized are also discussed together with the desired extensions of the testbeds. Some of the desired extensions are beyond the state of the art in microcomputer network implementation. [ABSTRACT FROM AUTHOR]

关键词： Distributed computer system distributed recovery block experimental validation fault tolerance real-time computer system recovery temporary blackout testbed

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FAULT TOLERANCE ANALYSIS OF THE CLASS OF REARRANGEABLE INTERCONNECTION NETWORKS

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JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING 1989年第1期7卷 148-164页

作者： PAKZAD, S Computer Engineering Program Department of Electrical Engineering The Pennsylvania State University University Park Pennsylvania 16802 USA

The issue of the fault tolerance of interconnection networks has received considerable attention since the last decade. The theoretical framework developed by J. P. Shen and J. P. Hays ( IEEE Trans. Comput. C-33 , 3 (Mar. 1984), 241–248) and extended by S. Pakzad and S. Lakshmivarahan ( Internat. J. Comput. Syst. Sci. Engrg. 3 , 2 (April 1988), 91–99) can be used as a guideline to analyze the fault tolerance behavior of the interconnection networks in a multicomputer environment. This paper analyzes the fault tolerance characteristics of a range of rearrangeable β-networks based on the concepts and the framework developed by S. Pakzad and S. Lakshmivarahan (cited earlier). These rearrangeable β-networks include the Benes network, the Waksman network, the Joel network, and the serial network. In addition, this paper presents a comparative analysis of the aforementioned networks according to their hardware cost, performance, and degree of fault tolerance.

关键词： computer Systems, Digital

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ON THE DESIGN OF A SINGLE-KEY-LOCK MECHANISM BASED ON NEWTONS INTERPOLATING POLYNOMIAL

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IEEE TRANSACTIONS ON SOFTWARE engineering 1989年第9期15卷 1135-1137页

作者： LAIH, CS HARN, L LEE, JY Department of Electrical Engineering National Cheng Kung University Tainan Taiwan Republic of China Computer Science and Telecommunications Program University of Missouri Kansas City MO 64110

A new single-key-lock (SKL) mechanism used for implementing the access matrix of the computer protection system is proposed. The key selection is very flexible. The lock values are generated recursively based on the Newton's interpolating polynomial. The insertion of a new user/file into the system can be successfully implemented without recomputing all locks/keys. [ABSTRACT FROM AUTHOR]

关键词： Access control access matrix Newton's interpolation polynomial protection security user-hierarchy

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electricalLY INDUCED TRANSMISSIVITY MODULATION IN POLYMERIC THIN-FILM FABRY-PEROT ETALONS

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APPLIED OPTICS 1989年第20期28卷 4442-4445页

作者： ELDERING, CA KOWEL, ST KNOESEN, A []The authors are with University of California Davis Department of Electrical Engineering Computer Science Organized Research Program on Polymeric Ultrathin Film Systems Davis California 95616

We report the observation of electrically induced changes in transmissivity in Fabry-Perot devices consisting of spin-cast azo-dye/polymer films deposited between gold mirrors. In poled samples the observed modulation shows a linear dependence on the applied modulating voltage. The ratio of the transmissivity modulation observed using incident transverse magnetic polarization to that observed using transverse electric polarization is used to demonstrate that the electrooptic effect dominates the modulation. This is, to our knowledge, the first reported use of a polymeric thin film linear electrooptic material in a Fabry-Perot structure and demonstrates the use of etalons to enhance electrooptic effects in very thin films.

关键词： Electrooptical effects Electrooptical modulators Materials processing Refractive index Thin film applications Thin films

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A Monte Carlo model of light propagation in tissue

A Monte Carlo model of light propagation in tissue

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Dosimetry of Laser Radiation in Medicine and Biology 1988

作者： Prahl, S.A. Keijzer, M. Jacques, S.L. Welch, A.J. Department of Electrical and Computer Engineering Biomedical Engineering Program University of Texas at Austin United States Department of Dermatology Wellman Laboratory Harvard Medical School United States

The Monte Carlo method is rapidly becoming the model of choice for simulating light transport in tissue. This paper provides all the details necessary for implementation of a Monte Carlo program. Variance reduction schemes that improve the effiency of the Monte Carlo method are discussed. Analytic expressions facilitating convolution calculations for flat and Gaussian beams are included. Useful validation benchmarks are presented. © 1989 SPIE.

关键词： Monte Carlo methods

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A new scheme for ID-based cryptosystem and signature

A new scheme for ID-based cryptosystem and signature

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8th Annual Joint Conference of the IEEE computer and Communications Societies, INFOCOM'89

作者： Laih, Chi Sung Lee, Jau Yien Harn, Lein Chen, Chin Hsing Department of Electrical Engineering National Cheng Kung University Tainan Taiwan Computer Science Program University of Missouri Kansas City MO 64110 United States

ISBN: (纸本)0818619201

This paper proposes a new ID-based cryptographic scheme for implementing public-key cryptosystem and signature. Instead of generating and publishing a public key for each user, the ID-based scheme permits each user to choose his name or network address as his public key. This eliminates the needs of a large public-file and the exchange of private or public keys. The major advantage of the ID-based cryptosystem based on our scheme over other published ID-based crypto-systems is that the number of users can be extended to t *L users without degrading the system's security even when users cospire, where L is the number of the system's secrets and t is the number of factors in p-1. © 1989 IEEE.

关键词： Authentication

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Implementation of the conversion scheme in loosely coupled distributed computer systems

Implementation of the conversion scheme in loosely coupled d...

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International Conference on Distributed Computing Systems

作者： S.M. Yang K.H. Kim Computer Science Engineering Department University of Texas Arlington Arlington TX USA Computer Engineering Program Department of Electrical Engineering University of California Irvine CA USA

Several different approaches are discussed for implementing conversations in loosely coupled distributed computer systems (DCSs). Important implementation factors considered include the control of exits of processes on completion of their conversation tasks and the approach to execution of the conversation acceptance test. Two different exit control strategies, one in a synchronous manner and the other in an asynchronous manner, and three different approaches to execution of the conversation acceptance test, centralized, decentralized, and semi-centralized, are examined and compared in terms of system performance and implementation cost. The effectiveness of these execution approaches also depends on the way conversations are structured initially by program designers. Therefore, the two major types of conversation structures, name-linked recovery block and abstract data type conversations are examined to analyze which execution approaches are the most efficient for each conversation structure. These results provide guidelines for implementing conversations in loosely coupled DCSs.< >

关键词： Distributed computing Costs Distributed control System testing Contracts computer science Centralized control Control systems System performance Guidelines

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A new scheme for ID-based cryptosystem and signature

A new scheme for ID-based cryptosystem and signature

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IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： C.S. Laih J.Y. Lee L. Harn C.H. Chen Department of Electrical Engineering National Cheng Kung University Tainan Taiwan Computer Science Program University of Missouri Kansas City MO USA

A novel ID-based cryptographic scheme for implementing a public-key cryptosystem and signature is proposed. Instead of generating and publishing a public key for each user, the ID-based scheme permits each user to choose his/her name or network address as his/her public key. This eliminates the needs of a large public field and the exchange of private or public keys. The major advantage of the ID-based cryptosystem based on this scheme over other published ID-based cryptosystems is that the number of users can be extended to t*L users without degrading the system's security even when users conspire, where L is the number of the system's secrets, and t is the number of factors in p-1, where p is a large prime number.< >

关键词： Identity-based encryption Public key cryptography Public key Information security Publishing Degradation Smart cards computer science Cities and towns

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Password authentication based on public-key distribution cryptosystem

Password authentication based on public-key distribution cry...

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International Conference on Data engineering

作者： L. Harn D. Huang C.-S. Laih Computer Science Program University of Missouri Kansas City Kansas City MO USA Department of Electrical Engineering National Cheng Kung University Tainan Taiwan

A password authentication mechanism based on the public-key distribution cryptosystem is proposed. The scheme uses an authentication table to replace the traditional password file. With this scheme, even if the authentication table is comprised, the system security is preserved. The user's password is effectively bound to the user's identification in a timely, efficient, and simple manner.< >

关键词： Authentication Public key Cryptography Protection Data security Information security Cities and towns Operating systems computer security computer networks

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