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computer-SYSTEm.ARCHITECTURE CONCEPTS FOR FUTURE COm.AT SYSTEm.

NAVAL ENGINEERS JOURNAL 1990年第3期102卷 43-62页

作者： ZITZm.N, LH FALATKO, Sm.PAPACH, JL Dr. Lewis H. Zitzman:is the group supervisor of the Advanced Systems Design Group Fleet Systems Department The Johns Hopkins University Applied Physics Laboratory (JHU/APL). He has been employed at JHU/APL since 1972 performing applied research in computer science and in investigating and applying advanced computer technologies to Navy shipboard systems. He is currently chairman of Aegis Computer Architecture Data Bus and Fiber Optics Working Group from which many concepts for this paper were generated. Dr. Zitzman received his B.S. degree in physics from Brigham Young University in 1963 and his M.S. and Ph.D. degrees in physics from the University of Illinois in 1967 and 1972 respectively. Stephen M. Falatko:was a senior engineering analyst in the Combat Systems Engineering Department Comptek Research Incorporated for the majority of this effort. He is currently employed at ManTech Services Corporation. During his eight-year career first at The Johns Hopkins University Applied Physics Laboratory and currently with ManTech Mr. Falatko's work has centered around the development of requirements and specifications for future Navy systems and the application of advanced technology to Navy command and control systems. He is a member of both the Computer Architecture Fiber Optics and Data Bus Working Group and the Aegis Fiber Optics Working Group. Mr. Falatko received his B.S. degree in aerospace engineering with high distinction from the University of Virginia in 1982 and his M.S. degree in applied physics from The Johns Hopkins University in 1985. Mr. Falatko is a member of Tau Beta Pi Sigma Gamma Tau the American Society of Naval Engineers and the U.S. Naval Institute. Janet L. Papach:is a section leader and senior engineering analyst in the Combat Systems Engineering Department Comptek Research Incorporated. She has ten years' experience as an analyst supporting NavSea Spa War and the U.S. Department of State. She currently participates in working group efforts under Aegis Combat System Doctrin

This paper sets forth computer system. architecture concepts for the com.at system.of the 2010–2030 tim.fram. that satisfy the needs of the next generation of surface com.atants. It builds upon the current Aegis computer system. architecture, expanding that architecture while preserving, and adhering to, the Aegis fundam.ntal principle of thorough system. engineering, dedicated to m.intaining a well integrated, highly reliable, and easily operable com.at system. The im.lem.ntation of these proposed computer system. concepts in a coherent architecture would support the future battle force capable com.at system.and allow the expansion necessary to accom.odate evolutionary changes in both the threat environm.nt and the technology then available to effectively counter that threat. Changes to the current Aegis computer architecture m.st be carefully and effectively m.naged such that the fleet will retain its com.at readiness capability at all tim.s. This paper describes a possible transition approach for evolving the current Aegis computer architecture to a general architecture for the future. The proposed computer system. architecture concepts encom.ass the use of com.inations of physically distributed, m.croprocessor-based computers, collocated with the equipm.nt they support or em.edded within the equipm.nt itself. They draw heavily on widely used and available industry standards, including instruction set architectures (ISAs), backplane busses, m.croprocessors, computer program.ing languages and developm.nt environm.nts, and local area networks (LANs). In this proposal, LANs, based on fiber optics, will provide the interconnection to support system.expandability, redundancy, and higher data throughput rates. A system.of cross connected LANs will support a high level of com.at system.integration, spanning the m.jor warfare areas, and will facilitate the coordination and developm.nt of a coherent m.lti-warfare tactical picture supporting the future com.atant com.and st

关键词： computer Architecture

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THE COm.AND SUPPORT AT-SEA EXPERIm.NT

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NAVAL ENGINEERS JOURNAL 1990年第3期102卷 25-36页

作者： BUSCHER, DJ SUNDAY, Dm David J. Buscher:is an electrical engineer on the Principal Professional Staff of the Fleet Systems Department of The Johns Hopkins University Applied Physics Laboratory. He earned his BS degree in electrical engineering from Villanova University in 1967 an MSEE degree from the University of Maryland in 1972 and an MS degree in technical management from The Johns Hopkins University in 1985. He was the lead engineer on the Command Support At-Sea Experiment Project. He started his career in 1967 with the U.S. Army Harry Diamond Laboratory working on computer and communications projects. During this time he worked in Vietnam with the United States Army Vietnam Science Advisor Office. Since joining JHU/APL in 1978 he has worked on a variety of projects associated with computer graphics hospital patient information systems computer networks autonomous underwater vehicles and satellite communications. He is currently assistant group supervisor of the Computer Systems Group. Daniel M. Sunday:is a mathematician on the Principal Professional Staff of the Fleet Systems Department of The Johns Hopkins University Applied Physics Laboratory. He earned his Ph.D. in mathematics from the University of Minnesota in 1971 and did postdoctoral research on neural networks at the University of California at Berkeley. Since joining JHU/APL in 1980 Dr. Sunday has worked as a designer and developer of software systems with emphasis on medical imaging interactive graphics natural language interfaces and software standards. He was the network designer for the Headquarters Integrated Office System (HIOS) Network for the Army at the Pentagon. He is currently the lead software engineer on the Command Support At-Sea Experiment Project.

The Com.and Support At-Sea Experim.nt (CS@SE) provides experim.ntal advanced graphics display system. consisting of large screen color displays and operator console color displays in the com.at inform.tion center (CIC) of an Aegis cruiser and in the tactical flag com.and center (TFCC) of an aircraft carrier. CS@SE system. are designed to prototype potential com.and support capabilities in an at-sea environm.nt to validate and refine requirem.nts for planned production system.upgrades. These system. use sophisticated color graphics techniques to provide real-tim. tactical displays that im.rove the availability of inform.tion to an operator by reducing clutter through the use of color, area fill, transparen overlays and intensity coding of track sym.ols. Interfaces wen developed with the Aegis Display System.(ADS), Shipboarc Gridlock System.with Auto-correlation (SGS/AC), Flag Dats Display System.(FDDS) and Tom.hawk Engagem.nt Planning and Exercise Evaluation System.(TEPEE) that provided the data for the presentation of a tactical display. Display elem.nts included both real-tim. and over-the-horizon (OTH) surface track data, velocity leaders, tags, uncertainty ellipses, and history trails. The display also included filled land m.sses, country boundaries, com.ercial airways, cities, graphics overlays (i.e., operational areas), weapon system.m.ssile perform.nce contours, and engagem.nt plans. This paper describes the experim.nt, its installation and integration into the shipboard environm.nts of an Aegis cruiser (USS Leyte Gulf ) and an aircraft carrier (USS Am.rica , its usage by the ships com.anies and em.arked staffs, and the experim.nt result! and findings. Key conclusions of the experim.nt are: 1 Advanced graphics color displays can significantly enhance the ability of the warfighter to assim.late a com.lex tactical display. 2 Both ships reported a requirem.nt for a correlated OTH and real-tim. track display with the ability to clearly differentiate the two types

关键词： computer Graphics

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COm.ARATIVE STRUCTURAL LIFE ASSESSm.NT OF PATROL BOAT BOTTOm.PLATING

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NAVAL ENGINEERS JOURNAL 1990年第3期102卷 253-262页

作者： AYYUB, Bm.WHITE, GJ BELLWRIGHT, TF PURCELL, ES Bilal M. Ayyub:is currently an associate professor of civil engineering at the University of Maryland. He received his B.S. degree in civil engineering from the University of Kuwait in 1980. He completed both his M.S. (1981) and Ph.D. (1983) in civil engineering at the Georgia Institute of Technology. Dr. Ayyub has an extensive background in risk-based analysis. He is engaged in research work involving structural reliability marine structures and mathematical modeling using the theories of probability statistics and fuzzy sets. His research work has been sponsored by the National Transportation Safety Board National Science Foundation U.S. Coast Guard Department of Defense State of Maryland and University of Maryland. He is the author of more than 100 publications in national and international journals conference proceedings and reports. Dr. Ayyub was a recipient of the ASNE “Jimmie” Hamilton Award for 1985 the ASCE “Outstanding Research Oriented Paper” in theJournal of Water Resources Planning and Managementfor 1987 and Edmund Friedman Young Engineer Award for Professional Achievement from ASCE for 1989. Gregory J. White:is an associate professor of naval architecture at the U.S. Naval Academy. He received his B.S. degreein engineering mechanics from Vanderbilt University in 1975 an M.E. degree in naval architecture from the University of California Berkeley in 1981 and a Ph.D. in civil engineering (structures) from the University of Maryland in 1986. Dr. White served on active duty with the U.S. Navy from 1975 to 1979 as a junior officer in the engineering and operations departments of Pacific Fleet destroyers. Prior to coming to the Naval Academy he worked at Mare Island Naval Shipyard in the scientific code and in the R&D division of Exxon International company's Tanker Department. Dr. White is the author of more than two dozen technical articles and reports and is one of the U.S. representatives to the International Ship and Offshore Structures Congress (ISSC). His research interests lie in t

The estim.tion of an absolute life expectancy of a structure is a com.lex process and the results are expected to have relatively large levels of uncertainty. In this study, a com.arative analysis is undertaken between two different patrol boats. This is an approach which results in a higher confidence level because certain factors com.on to both boats can be elim.nated by assum.ng them.to be at constant norm.l levels. The study is lim.ted to the critical forward bottom.plating and takes into account the differences in m.terial, plate dim.nsions, operational profile, structure and loading of the two vessels. Two failure m.des, plastic plate deform.tion and fatigue, are considered, and a novel approach to plate wastage is included. m.ny factors affect the structural life of a vessel. They include structural type, operational profile, structural details, loads, inspection and m.intenance, design m.thods, safety factors, corrosion, and environm.ntal factors. There are three types of uncertainty associated with these factors; nam.ly, physical random.ess, statistical uncertainties, and m.del uncertainties. The m.thod described is designed to address these uncertainties. The objective of the paper is to present the reliability-based structural life assessm.nt m.thod, and then to use it to evaluate and com.are the structural perform.nce of the forward bottom.plating of the two patrol boats. The results of the evaluation are presented in the form.of graphs and tables in order to facilitate the com.arative evaluation. The m.thod is perform.d within a computer-based form.t which allows param.tric sensitivity analysis of several variables including the size of the plating panel, thickness, operational profile and loading. The sensitivity of the structural life expectancy of the forward bottom.plating to variations in these param.ters is evaluated.

关键词： Naval Vessels

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The use of irreducible characteristic polynom.als in an LFSR based testing of digital circuits

The use of irreducible characteristic polynomials in an LFSR...

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IEEE Region 10 International Conference TENCON

作者： A. Ahm.d N.K. Nanda K. Garg Department of Electronics and Computer Eingineering University of Roorkee Roorkee India Department of Electronics Engineering Engineering College A. M. U. Aligarh India Division of Computer Science AIT Bangkok Thailand

The im.act of irreducible characteristic polynom.als with respect to polynom.al seeds on the effectiveness of an LFSR (linear feedback shift register)-based testing technique is studied through a sim.lation experim.nt. The results reveal that when irreducible characteristic polynom.als are used in after data com.ression, the behavior of aliasing errors, with respect to polynom.al feeds, is unchanged. The sam. conclusion is arrived at by the sim.lation study of m.ny m.re circuits. This result has an im.ortant bearing on an LFSR-based testing of digital circuits.< >

关键词： Circuit testing Polynom.als Digital circuits Built-in self-test Circuit faults Educational institutions computer science Com.utational m.deling computer sim.lation Autom.tic testing

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FINITE-TIm. THERm.DYNAm.CS AND ITS POTENTIAL NAVAL SHIPBOARD APPLICATION

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NAVAL ENGINEERS JOURNAL 1989年第1期101卷 35-39页

作者： WU, C WALKER, TD Dr. Chih Wu:received his Ph.D. in mechanical engineering from the University of Illinois in January 1966. Presently he is a full professor at the U.S. Naval Academy. Since 1966 he has had more than 300 articles and papers presented at professional meetings and published in various journals and technical magazines concerning the subjects of energy thermodynamics heat transfer fluid dynamics computer science and education. LCdr. Thomas Walker USN: graduated from Purdue University in 1973 with a B.S. degree in electrical engineering and earned an M. S. degree in mechanical engineering in 1979 at the U.S. Naval Postgraduate School Monterey. In his 24 years in the Navy he has served on a number of ships ranging from diesel submarines to guided missile destroyers. He is currently in the mechanical engineering faculty at the U.S. Naval Academy. He is a member of Tau Beta Pi (National Engineering Honorary Fraternity) and has recently accepted a faculty position in the Division of Engineering Fundamentals at Virginia Polytechnic Institute and State University.

m.xim.m.power and the efficiency at the m.xim.m.power of an irreversible heat engine are treated. When tim. is explicitly considered in the energy exchanges between the heat engine and its surroundings, it is found that there is a bound on the efficiency of the real heat engine at the m.xim.m.power condition. This bound can guide the evaluation of existing naval shipboard energy conversion or influence design of future shipboard heat engines.

关键词： Heat Engines

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THE AEGIS DATA BUS EXPERIm.NT

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NAVAL ENGINEERS JOURNAL 1989年第5期101卷 53-58页

作者： FRINK, JG VERVEN, Dm John G. Frink is an assistant group supervisor in the Fleet Systems Department of The Johns Hopkins University Applied Physics Laboratory. He received his B.S. degree in physics from Michigan State University in 1968 and the M.S. degree in computer science from the University of Maryland in 1971. Mr. Frink worked at the Naval Surface Weapons Center White Oak Laboratory on a variety of weapons systems before joining the Applied Physics Laboratory in 1978. Mr. Frink has supervised the development of a large scale battle group simulation that successfully employs the receiver selection paradigm described herein on a hardware suite composed of an extensible number of (currently 15) processors. David M. Verven is a senior electrical engineer in the Fleet Systems Department of The Johns Hopkins University Applied Physics Laboratory. He received the B.S. degree in electrical engineering from the University of Maryland College Park in 1979 and the M. S. degree in the same discipline from The Johns Hopkins University in 1984. Mr. Verven joined the Applied Physics Laboratory in 1979 and initially worked on analysis of Navy sensor systems. In 1981 he was the AN/SPS-49 test team leader for the New Threat Upgrade (NTU) combat system land-based test. In 1982 he became involved in the development of the BBWRS system. Currently he is involved in real-time computer program development for the CEP project.

This paper docum.nts an experim.nt perform.d by The Johns Hopkins University Applied Physics Laboratory to m.asure the effect of inserting a data bus into a com.at system. The experim.nt was conducted at the Aegis computer Center located at the Naval Surface Weapons Center in Dahlgren, Virginia (NSWC/DL). The purpose of the experim.nt was to determ.ne whether or not the Aegis Weapon System.(the core of the Aegis Com.at System. could be operated with a portion of its point-to-point interelem.nt cables replaced by a data bus. The data bus chosen for the experim.nt em.loys m.ssage broadcasting with receiver selection. A prim.ry goal of the experim.nt was to m.nim.ze the am.unt of Aegis computer program.changes required to accom.odate the data bus. The results presented in this paper will show that the experim.nt was a success. Key certification tests were passed with no computer program.changes to the tactical elem.nts and m.nim.l changes in the Aegis tactical executive (ATES) program.(less than 110 words changed).

关键词： Data Transm.ssion Equipm.nt

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NEW techNOLOGY IN OIL CONTENT m.NITORS

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NAVAL ENGINEERS JOURNAL 1989年第2期101卷 48-55页

作者： NARDELLA, JA RAW, TT STOKES, GH John A. Nardella is the life-cycle manager for oil content monitor equipment for the Naval Sea Systems Command Washington D.C. He has an M.S. degree in chemical engineering from the Pennsylvania State University and is a licensed professional engineer in the Commonwealth of Virginia. Dr. Timothy T. Raw is the principal investigator responsible for the oil contamination monitor project. He has a doctorate in physical chemistry from Rensselear Polytechnical Institute and a B.A. in chemistry and computer science from Saint Louis University. Dr. Raw is currently a staff member at Anheuser Busch Inc. in Saint Louis. Dr. Grant H. Stokes is responsible for the technical management of Geo-Centers Inc. Boston operation. He has doctorate and M. S. degrees in physics from Princeton University and a B.A. from Colorado College. Previous to joining Geo-Centers Inc. he was a staff member in the Laser Fusion Program at Los Alamos National Laboratory.

International antipollution requirem.nts have been legislated to regulate the oil content of bilge effluent from.ships. In response to these standards, the U.S. Navy is currently in the process of installing pollution abatem.nt equipm.nt on all vessels. The equipm.nt will consist of an oil-water separator in the bilge discharge line, followed by an oil content m.nitor which m.kes the final decision on whether or not the water is clean enough to be pum.ed overboard. The m.nitor is required to m.ke a real-tim. m.asurem.nt of oil concentration in the range 15 ± 5 to 100 ± 20 ppm.for flow rates up to 50 gal/m.n. and possibly in the presence of interfering contam.nants, such as rust. This paper presents the results of the current effort to develop a m.nitor which satisfies all of these requirem.nts and is sufficiently rugged for fleet deploym.nt. The m.nitor under developm.nt em.loys two fiber optic system. and a sm.ll m.croprocessor. The first optical system.m.asures the concentration of particles in the flow as a function of their sizes, using sm.ll angle forward scattering. The second determ.nes what percentage of the particles in the flow are oil, using large angle scattering. The m.croprocessor takes the data from.the two optical system. and calculates the oil concentration in the flow. Since the particle size is m.asured by the m.nitor, no sam.le preparation is required and the m.nitor m.y be placed directly in the discharge line where it responds to changes in oil content in less than one second. In addition, this m.nitor can notify the operator of im.ending oil-water separator failure associated with passing large oil particles. A dem.nstration m.nitor consisting of the forward scattering unit has been successfully tested at the NavSea oil pollution abatem.nt test facility at the Naval Ship System. engineering Station at Philadelphia. The m.nitor agrees well with chem.cal m.ans of m.asuring oil content. Results of this com.arison and laboratory test of a prototyp

关键词： Water Pollution

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ESTIm.TION OF STRUCTURAL SERVICE LIFE OF SHIPS

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NAVAL ENGINEERS JOURNAL 1989年第3期101卷 156-166页

作者： AYYUB, Bm.WHITE, GJ PURCELL, ES P.E. Bilal M. Ayyub:is currently an associate professor of civil engineering at the University of Maryland. He received his B.S. degree in civil engineering from the University of Kuwait in 1980. He completed both his M.S. (1981) and Ph.D. (1983) in civil engineering at the Georgia Institute of Technology. Dr. Ayyub has an extensive background in risk-based analysis and design simulation and construction engineering. He is engaged in research work involving structural reliability bridges marine structures and mathematical modeling using the theories of probability statistics and fuzzy sets. His research work is sponsored by the National Transportation Safety Board the National Science Foundation the U.S. Coast Guard the State of Maryland and the University of Maryland. Dr. Ayyub is a member of ASNE the American Society of Civil Engineers (ASCE) the American Concrete Institute (ACI) the Committee on Forensic Engineering of ASCE and the Committee on Structural Safety of ACI. He is the author of more than three dozen publications in national and international journals conference proceedings and reports. Dr. Ayyub received the ASNE “Jimmie” Hamilton Award for 1985 and the ASCE “Outstanding Research Oriented Paper” in the Journal of Water Resources Planning and Management for 1987. Gregory J. White:is an associate professor of naval architecture at the U.S. Naval Academy. He received his B.S. degree in engineering mechanics from Vanderbilt University in 1975 an M.E. degree in naval architecture from the University of California Berkeley in 1981 and a Ph.D. in civil engineering (structures) from the University of Maryland in 1986. Dr. White served on active duty with the U.S. Navy from 1975 to 1979 as a junior officer in the engineering and operations departments of Pacific Fleet destroyers. Prior to coming to the Naval Academy he worked at Mare Island Naval Shipyard in the scientific code and in the R&D division of Exxon International Company's Tanker Department. Dr. White is a lieutenant commande

A m.thodology for the structural life assessm.nt of a ship's structure is suggested. The m.thodology is based on probabilistic analysis using reliability concepts and the statistics of extrem.s. In this approach, the estim.tion of structural life expectancy is based on selected failure m.des. All possible failure m.des of the ship m.st be investigated and the m.st likely paths to structural failure identified. For the purpose of illustration two failure m.des are considered in this study. They are plate plastic deform.tion and fatigue cracking. Structural life based on these two failure m.des is determ.ned for an exam.le vessel. The m.thodology determ.nes the probability of failure of the ship's structural com.onents according to the identified failure m.des as a function of tim.. The results can be interpreted as the cum.lative probability distribution function (CDF) of structural life. Due to the unknown level of statistical correlation between failure m.des, lim.ts or bounds on the CDF of the structural life are established. The lim.ts correspond to the extrem. cases of fully correlated and independent failure m.des. The CDFs of structural life are determ.ned for two inspection strategies; nam.ly, inspection every year and inspection every two years with a warranty inspection at the end of the first year. The m.aning of the results for the case investigated in this study is that, for exam.le, given an inspection strategy of two years and a desired life of 15 years, there is a 72% chance that the vessel will not experience enough partial dam.ge‘ in the failure m.des identified to constitute reaching the “end of structural life” as defined.

关键词： Ships

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GENERAL ARRANGEm.NT DESIGN computer-SYSTEm.AND m.THODOLOGY .1. GENERAL ARRANGEm.NT DESIGN SYSTEm

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NAVAL ENGINEERS JOURNAL 1987年第3期99卷 261-273页

作者： CARLSON, Cm.FIREm.N, H Craig M. Carlson:is a general engineer in the Computer Aided Engineering Division (SEA-507). He received his B.S. degree in naval architecture from the University of Michigan in 1970. In 1972 he was selected for the NAVSEC Hull Division's Long Term Training Program at the University of Michigan and received his M. S. E. degree in naval architecture in 1973. Additionally he has done graduate work in computer science at The Johns Hopkins University. Mr. Carlson began his career with the Naval Ship Engineering Center in 1970 where he worked in the Ship Arrangements Branch. While in ship arrangements he was task leader for the PGG PCG PHM and MCM ship designs. In addition he was project engineer for shipboard stowage ship space classification system and ship standard nomenclature. He was technical manager of the CASDAC arrangement subsystem and the CASDAC hull design system. In 1982 he joined what is now the Computer Aided Engineering Division. Currently he is the manager for the computer supported design version XX system. Besides ASNE which he joined in 1972 he is a member of SNA ME and the U.S. Naval Institute. Howard Fireman:is a naval architect in the Ship Arrangements Design Division (SEA-55W1). He received his B. S. E. degree in naval architecture from the University of Michigan in 1979. In 1983 he was selected for NavSea's Long Term Training Program at the University of Michigan and received his M. S. E. degree in naval architecture with a specialization in ship production and computer aided ship design in 1985. Mr. Fireman began his career with the Naval Ship Engineering Center in 1977 as an engineering cooperative student. Since graduating from the NavSea EIT program he has worked in the Ship Arrangements Design Division. He was task leader for the AOE-6 AE-36 T-AH ARS-SO and SWATH T-AGOS ship designs. He is technical manager of the CSD General Arrangement Design System and is currently the Hull Group CSD coordinator. Besides ASNE which he joined in 1979 he is a member of SNA ME ASE a

The ever increasing com.lexity of ships coupled with cost, schedule, and resource constraints require innovative m.thods by the Naval Sea System. Com.and's ship design com.unity to m.et this challenge. This paper describes the effort by the NavSea Ship Arrangem.nt Design Division to dram.tically im.rove its ship design capability by the use of a system.of computer-based design tools called the General Arrangem.nt Design System. The General Arrangem.nt Design System.(GADS) is based on the engineering requirem.nts of the ship arrangem.nt design process. GADS is currently being used as a production engineering tool. This paper is organized into two parts. Part I describes the General Arrangem.nt Design System. and Part II describes the general arrangem.nt design m.thodology.

关键词： NAVAL ARCHITECTURE

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THE ROLE OF PERFORm.NCE ANALYSIS IN THE LIFE-CYCLE OF A WEAPONS SYSTEm

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NAVAL ENGINEERS JOURNAL 1987年第3期99卷 239-248页

作者： BAILEY, JL The authoris an operations research analyst in the Systems Engineering Branch Aegis Ship Combat Systems Division at the Naval Surface Weapons Center (NSWC). Dr. Bailey received a B. S. degree in mathematics from the Massachusetts Institute of Technology in 1964 a Ph.D. in mathematics from the University of Tennessee in 1968 and an M. S. in computer science from the Virginia Polytechnic Institute and State University in 1975. He was an assistant professor of mathematics at the University of Tennessee during the 1968-69 academic year then came to NSWC/Dahlgren in September 1969. He worked as an operations research analyst in mine warfare from 1969 to 1978 specializing in minefield planning. He headed the group which developed the minefield planning module of the Mine Warfare Trainer which was delivered to the Fleet and Mine Warfare Training Center in 1978-79. Dr. Bailey served as science advisor to the commander Mine Warfare Command in 1978-79 under the sponsorship of the Navy Science Assistance Program. In 1979-80 he led the development of military value assessment methodology for a ship survivability improvement program. In 1980 he moved to the Aegis Ship Combat Systems Division becoming leader of the Systems Performance Assessment Group in 1981. Dr. Bailey leads a group of analysts who do assessment of the predicted performance of the Aegis combat system and the effects of proposed changes to the system. Dr. Bailey has also served collateral duty as systems analysis manager for the Technical Division of the Aegis Project Office (PMS-400) in the Naval Sea Systems Command since 1981.

Perform.nce analysis is the process of determ.ning the predicted perform.nce of a weapons system. It is generally used to exam.ne predicted perform.nce of system. in a variety of configurations and operational situations; it is accom.lished through a variety of techniques, from.the com.utation of straightforward algebraic functions to com.lex computer sim.lations. Perform.nce analysis is necessary throughout the life-cycle of weapons system.. It is used to help determ.ne original requirem.nts, for conceptual and detailed design, and to support operational planning and determ.ne upgrade requirem.nts. The developm.nt, m.intenance, and consistent application of a set of system.specific perform.nce analysis m.thods have enhanced the developm.nt of m.ny weapons system.. This paper is in the form.of a tutorial on the application of perform.nce analysis techniques, using the developm.nt of the Aegis weapons system.as a source of exam.les, and stressing the value of perform.nce analysis m.thods which have been designed specifically for the Aegis system.

关键词： m.LITARY EQUIPm.NT

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