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ASYNCHRONOUS TRANSFER MODE (ATM) OPERATION VIA SATELLITE - ISSUES, CHALLENGES AND RESOLUTIONS

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 211-222页

作者： CHITRE, DM GOKHALE, DS HENDERSON, T LUNSFORD, JL MATHEWS, N COMSAT Laboratories 22300 Comsat Drive Clarksburg MD 20871 USA. Received his B.Sc. from the University of Bombay India an M.A. in mathematics from the University of Cambridge U.K. and a Ph.D. in physics from the University of Maryland. He is currently an Associate Executive Director of the Network Technology Division at COMSAT Laboratories. He has been involved in research and development activities in ISDN VSAT networks data communications and network systems and architectures. Prior to his current positions Dr. Chitre was a Principal Scientist in the Network Technology Division at COMSAT Laboratories. Dr. Chitre joined COMSAT Laboratories in 1980. He has made major contributions to the analysis and architecture of data communication ISDN and BISDN via satellite. Dr. Chitre directs and participates in the international and national standards activities in ISDN BISDN and data communication as they apply to satellite communication. He was Chairman of the Working Group on Protocols and Network Timing Function of the CCIR/CCITT Joint Ad Hoc Group on ISDN-Satellite Matters during 1990–1992. Currently he is the Chairman of the Working Group on New Technologies in the ITU Intersector Coordinating Group (ICG) on Satellite Matters. Dr. Chitre was a programme manager during 1990 and 1991 on a contract from INTELSAT on systems studies on satellite communications systems architectures for ISDN and broadband ISDN systems. Currently he is the technical manager of the DoD Contract on ATM via satellite demonstration and the programme manager for the INTELSAT contract on analysis and top-level specification of INTELSAT ISDN subnetworks and SDH compatible transport network. Department manager for ISDN/Data Communications in the Network Technology Division of COMSAT Laboratories. His responsibilities include managing the implementation of next generation telecommunication systems for fixed and mobile satellite systems. Current projects include the development of a high data rate gateway switch that provides for the

Key issues regarding the operation of the broadband integrated services digital network (BISDN) via satellite are presented herein. The specific issues, challenges, and their resolutions are detailed. In particular, the impact of error characteristics and propagation delay on the operation of BISDN via satellite is discussed. Solutions are presented for removing adverse effects and providing high-quality service to users of BISDN via satellite.

关键词： ATM BISDN

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INNOVATIONS IN TRAINING SIMULATION

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NAVAL ENGINEERS JOURNAL 1992年第3期104卷 141-147页

作者： SOTTILARE, RA LONG, RA Robert A. Sottilare:is the lead project engineer for Device 14A12 Surface Ann-Submarine Warfare Team Trainers at the Naval Training Systems Center in Orlando Florida. He received his B.S. in electrical engineering at the University of Central Florida in 1984. Since then his duties at the Naval Training Systems Center have centered around acoustic simulation and the technical management of surface anti-submarine warfare trainer procurements. Rodney A. Long:is the lead software engineer for Device 14A12 Surface Anti-Submarine Warfare Team Trainers at the Naval Training Systems Center in Orlando Florida. He received his B.S. in computer engineering at the University of South Carolina in 1987. He has been with the Naval Training Systems Center since 1987 as the government software engineer on a variety of training systems for the Army Navy and Marine Corps.

With the Navy leaning towards a smaller but better trained force, using simulators in training becomes a cost effective way of keeping our military edge. Several innovations are being utilized in today's simulators. Hardware and software designs now include distributed computer architectures, real-time, multi-tasking operating systems, flexible generic consoles, commercial off-the-shelf equipment, standard real-time ocean acoustic models, and standard acoustic data bases. This paper describes these technologies and their innovative application in the Navy's newest Anti-Submarine Warfare Team Trainer, Device 14A12. Device 14A12 simulates sonar, fire control, electronic warfare, bridge, ownship aircraft and Naval Tactical Data systems (NTDS) for 16 surface ownship classes. Device 14A12 also simulates multiple air, surface and subsurface threat, neutral and friendly platforms as well as missiles and torpedoes. The innovative modeling of these systems along with Device 14A12's enormous flexibility will allow the Navy to provide effective tactical training for the surface fleet now and in the future.

关键词： Personnel Training

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CAD CAM MANUFACTURING OF PROTOTYPE SHIPBOARD COMPONENTS

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NAVAL ENGINEERS JOURNAL 1990年第3期102卷 93-99页

作者： CALVERT, TE RODRIGUEZ, FA SLEBZAK, JS Thomas E. Calvert P.E.: is a senior project engineer with the Propulsion and Auxiliary Systems Department David Taylor Research Center Annapolis Md. His interests include application of computers to all aspects of engineering with particular emphasis on utilization of small computers. Mr. Calvert is a licensed professional engineer in Maryland. He received a BSEE from Drexel University in 1969 and since that time has completed a number of graduate courses related to machinery acoustics. Francisco A. Rodriguez:is an engineer with the Propulsion and Auxiliary Systems Department David Taylor Research Center. He was formerly with the Computer-Aided Design/Interactive Graphics Group of the Division of Engineering and Weapons U.S. Naval Academy. His interests include interfacing the computer aided design to the computer aided manufacturing along with related software and hardware development. Mr. Rodriguez received a BSEEfrom the University of Virginia in 1968. James S. Slebzak:is a mechanical engineering technician with the Propulsion and Auxiliary Systems Department David Taylor Research Center. He received his machinists papers in 1971 after serving his apprenticeship at David Taylor Research Center. He continued his education and became the senior numerical control programmer at the Annapolis Laboratory. He completed his mechanical technology degree from Anne Arundel Community College in 1986. His interests are in the application of numerically controlled manufacturing techniques to prototype machinery components.

The machine shop at the Annapolis Laboratory of the David Taylor Research center (DTRC) provides model making and prototype support to a large variety of naval ship related engineering projects. In order to meet these challenging requirements, computer aided design/computer aided manufacturing (CAD/CAM) techniques are being used to produce “one of a kind” prototypes or very low volume production parts. The use of computer aides in these cases is to facilitate the accurate manufacture of a difficult part, rather than to improve manufacturing efficiencies. In addition, the approach provides the flexibility required to support research and development projects. Several examples of prototype shipboard components manufactured using CAD/CAM techniques are presented in this paper. The hardware and software that facilitated these projects are discussed. The examples described have met the requirements to produce a wide variety of prototype shipboard machinery components quickly and accurately.

关键词： Ship Equipment

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INTEGRATED MACHINERY CONTROL - THE WAY OF THE FUTURE

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NAVAL ENGINEERS JOURNAL 1988年第3期100卷 117-127页

作者： TAYLOR, B KHAN, R Barry Taylor:attended the Royal Military College of Canada graduating in 1968 with a BSc. After completing naval training he obtained a Bridge Watchkeeping Certificate with subsequent employment as communications officer. Upon completion of his Engineering Certificate of Competency his appointments encompassed the following: engineering officer in several HMC ships various engineering positions in Defence Headquarters and HMC dockyards and officer-in-charge of the Engineering Division Halifax. His last naval appointment in Defence Headquarters was as section head responsible for machinery controls interior communications and navigation systems he was also project manager for the Shipboard Integrated Machinery Control System (SHINMACS). In 1987 he took up the position of manager technical development at CAE Electronics Ltd. Montreal Canada. Rashid Khan:obtained an honors degree in electrical and electronics engineering at Newcastle-upon-Tyne Polytechnic England in 1973. After graduation he worked as a software design engineer on various real-time systems before joining a large packet switching project in Belgium. He was responsible for optimisation and integration of the Network Management Center. He emigrated to Canada in 1981 and joined CAE Electronics Ltd. where he has worked in a supervisory capacity on several real-time control systems. He is currently the manager control system software development.

The shipboard integrated machinery control system (SHIN-MACS) has been under development since 1977. It has moved from an idea, through a paper study, a wooden mock-up, a demonstrator console, to an advanced development model, and will first be operational in the Canadian patrol frigate (CPF) in 1988. The development of this integrated control system, particularly the latter part, has not been without its problems. However, through redesign and evaluation, the system is now real-time capable and should provide a marked improvement over traditional control systems, particularly in the area of operator interaction with the plant. The integrated machinery control system (IMCS) for the Canadian Patrol Frigate Program is the same design as the IMCS that is being retrofitted into the DDH-280 class of destroyers under the Tribal Class Update and Modernization Program (TRUMP). The IMCS is a microprocessor based distributed control system which provides automatic control and monitoring of the ship's machinery and systems. The system will have the most technologically advanced man-machine interface yet to be seen in a warship. The IMCS communicates with all of its components over a triple redundant data bus using redundant digital propulsion controllers. It also has an equipment health monitoring capability designed to assist in the reduction of life cycle cost of the machinery. The IMCS in the CPF has a significant growth potential. The IMCS is a software based system, and thus lends itself readily to modifications and adaptation to other vessels. This technology will impact on the operation of a modern warship by catering to reduced manning; it will also provide assistance in the implementation of on-condition based maintenance through the gathering of data electronically. The Canadian patrol frigate IMCS will be the first fully digital machinery control system to utilize data bus technology for all control and monitoring functions.

关键词： MACHINERY

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AN EXPERT SYSTEM FOR REAL-TIME NOISE AND VIBRATION ANALYSIS OF SHIPBOARD EQUIPMENT

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NAVAL ENGINEERS JOURNAL 1986年第3期98卷 107-114页

作者： KLEIN, SK VAIL, JA BALON, K Jeannine A. Vailis a graduate of the University of Pittsburgh and Wheeling College where she earned MS and BS degrees in mathematics. She is currently the president of Vail Research and Technology Corporation. Experience includes twelve years in reliability maintainability and availability (RMA) engineering software development and cost analysis in NA VSEA the Naval Surface Weapons Center and industry. She developed RMA requirements and performed simulations on a wide variety of naval ships and underwater weapons. She is a co-developer of the computer simulation techniques used in this paper for which she received a Group Achievement A ward from NA VSEA in 1980. Ms. Vail is currently a member of ASNE IEEE and the Society of Reliability Engineers. Publications include “DDG-47 Reliability Engineering Analysis”Naval Engineers JournalApril 1978. Steven K. Kleinattended Indiana University where he earned BS and MS degrees in mathemtical physics and completed course work for PhD degrees in mathematical physics and inorganic chemistry. He is currently a division director with ORI Inc. He has taught physics and mathematics at Indiana University and has over fifteen years experience in RMA engineering and management including director of product assurance for the joint cruise missile project. He has provided RMA engineering support to a broad spectrum of Navy and Air Force tactical and strategic weapon systems and is a past member of the NASA microcircuit line certification team. Kevin Balonis a graduate of the University of Maryland where he earned a BSEE degree. He is currently employed with ORI Inc. where he is performing a variety of projects related with implementation of higher order languages in embedded firmware architectures.

An expert system is described which allows real-time analysis of the noise and vibration signature of vibrating machinery. The system presented consists of an adaptive algorithm which varies the band width of analysis channels as a function of a signal complexity factor and a measure of the rapidity of local signal change. Overall program architecture is presented as well as detailed discussion of signature functional identification and statistical trend modules which are adaptable to a wide variety of input data base configurations. Execution of the program on a “super-mini” in FORTRAN code with direct graphics output and on 68000 series based firmware using ADA is discussed. Results are presented of program execution on Navy hydrophone and propulsion gas turbine data showing current signature and projections of trend to future times compared with failed condition signatures. Correlation results for such predictions are also discussed.

关键词： SHIP EQUIPMENT

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RATIONALE FOR AN ADA software engineering ENVIRONMENT FOR NAVY MISSION CRITICAL APPLICATIONS

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NAVAL ENGINEERS JOURNAL 1984年第4期96卷 133-145页

作者： PAIGE, KK CONVERSE, RA USN LCdr. Kathleen K. Paige USN:graduated with a BA from the University of New Hampshire in 1970. She received her commission from Officer Candidate School in April 1971 and performed her first tour of duty with VFP-63 NAS Miramar. LCdr. Paige then received her MS from the Naval Post Graduate School in June 1976 and returned to San Diego to serve as Head Support Software Division at the Fleet Combat Direction System Support Activity. In May 1981 she reported to NA VSEA (PMS-408) where she served initially as Chairman of the NAVMAT Software Engineering Environment Working Group. She has been assigned as Deputy AN/UYK-43 Acquisition Manager since October 1981. LCdr. Paige was designated a fully qualified Engineering Duty Officer in December 1983. Robert A. Converse:is presently the Acquisition Manager for the Ada Language System/Navy (ALS/N) for the Naval Sea Systems Command Tactical Embedded Computer Resources Project. As such he is responsible for the definition and development of the ALS/N to be provided as a Navy standard computer programming system for Navy mission critical applications. Mr. Converse received a Bachelor of Science degree in Physics from Wheaton College Wheaton II. He spent fourteen years with the Naval Underwater Systems Center Newport Rhode Island during which time he designed and developed the Fortran compiler for the Navy Standard AN/UYK-7 computer. Also during that period he received a Master of Science degree in Computer Science from the University of Rhode Island. His thesis for that degree was entitled “Optimization Techniques for the NUSC Fortran Cross-Compiler”. Mr. Converse started his involvement with the Ada program in 1975 with the initial “Strawman” requirements review. Subsequently he was named as the Navy Ada Distinguished Reviewer and was intimately involved in the selection and refinement of the Ada language as it evolved to become ANSI/MIL-STD-1815A.

The U.S. Navy introduced the use of digital computers in mission critical applications over a quarter of a century ago. Today, virtually every system in the current and planned Navy inventory makes extensive use of computer technology. Computers embedded in mission critical Navy systems are integral to our strategic and tactical defense capabilities. Thus, the military power of the U.S. Navy is inextricably tied to the use of programmable digital computers. The computer program is the essential element that embodies the system “intelligence”. In addition, it provides the flexibility to respond to changing threats and requirements. However, this very flexibility and capability poses a host of difficulties hindering full realization of the advantages. This paper describes the lessons learned about computer program development over the past twenty five years and discusses a software engineering process that addresses these lessons. It then describes how Ada and its related Ada Programming Support and Run-Time Environments foster this software engineering process to improve computer program productivity and achieve greater system reliability and adaptibility. Finally, the paper discusses how the use of Ada and its environments can enhance the interoperability and transferability of computer programs among Navy projects and significantly reduce overall life cycle costs for Navy mission critical computer programs.

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Professional Knowledge Management 1

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丛书名： Lecture Notes in Computer Science

1000年

作者： Klaus-Dieter Althoff Andreas Dengel Thomas Roth-Berghofer Ralph Bergmann Markus Nick

ISBN: (数字)9783540316206

ISBN: (纸本)9783540304654

Professional knowledge management is imperative for the success of enterprises. One decisive factor for the success of knowledge management projects is the coordination of elements such as corporate culture, enterprise organization, - man resource management, as well as information and communication techn- ogy. The proper alignment and balancing of these factors are currently little understood—especially the role of information technology, which is often - garded only as an implementation tool, though it can be a catalyst by making new knowledge management solutions possible. This conference brought together representativesfrom practical and research ?elds for discussing experiences, professional applications, and visions through presentations, workshops, tutorials, and an accompanying industry exhibition. The main focus of the conference was the realization of knowledge mana- ment strategies with the aid of innovative information technology solutions, such as intelligent access to organizational memories, or integration of business processes and knowledge management. Also of interest were holistic/integrative approaches to knowledge management that deal with issues raised by the in- gration of people, organizations, and information technology.

关键词： Artificial Intelligence Information Storage and Retrieval Information systems Applications (incl. Internet) Computer Appl. in Administrative Data Processing Computers and Education

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US NAVY GAS TURBINE POWERED OCEAN ESCORT

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NAVAL ENGINEERS JOURNAL 1969年第4期81卷 53-&页

作者： MARRON, HW BAYLES, GC ROBINSON, PG MITCHELL, WD Hugh Marron a native of Pennsylvania received his Bachelor of Science Degree in Civil Engineering from the Pennsylvania State University in 1939. Upon graduation he was employed for one year with the Pennsylvania Department of Highways as a construction engineer. In July 1940 he became a Marine Engineer at the Philadelphia Naval Shipyard where after a period of apprenticeship and special training in this new field he was assigned to the Machinery Scientific Group of the Design Division. In October 1945 he was transferred to the Design Division of the Bureau of Ships. Mr. Marron is now Head of the Project Coordination Office in the Machinery Systems Division of the Naval Ship Engineering Center. Mr. Marron is a member of ASNE ASE. Grover C. Bayles joined NAVSEC in February 1966 upon concluding a career in private industry in the allied field of engineering application of naval machinery. Responsibilities in NAVSEC have centered upon the application of gas turbine engines to naval combatant ships. Efforts have been directed primarily to technical coordination of procurement development of software requirements and technical liaison between the contractor and NAVSHIPS for the procurement of propulsion systems. Mr. Bayles is a member of ASNE ASE. Peter Robinson a native of Maine graduated from the Maine Maritime Academy in 1956 and received his Bachelor of Marine Science Degree U.S. Coast Guard License and Commission in the U.S. Naval Reserve. He presently holds a Second Assistant Engineers License for steam vessels. After a tour as Main Engines Officer aboard an aircraft carrier and some merchant service he entered the University of Maine. After four years he received his Bachelor of Science Degree in Mechanical Engineering. Upon graduation he was employed for four years with the Portsmouth Naval Shipyard in the Nuclear Power Division primarily in the Test Group. Mr. Robinson came to NAVSEC in 1966 and is presently employed in the Propulsion Systems Analysis Branch as a Marine Engineer. Mr. Robinson is

“This article is from a paper presented in Washington, D. C. at the Association of Senior Engineers Naval Ship System Command 6th Annual Technical Symposium. The paper describes the special features of a gas turbine propulsion system concept of integrating high horsepower and C. P. propellers into a complete propulsion system. This advanced propulsion system design is unique in that it was developed to fit into an existing D. E. ship design and proposed for the fiscal year 1968 building program. The ship has been cancelled, however, the design should be of interest to people both within the Navy and in that sector of private industry concerned with the future of our Navy shipbuilding programs. The focus is now on the gas turbine as a prime mover for warships, and it seems likely that there will be an increased emphasis on the use of gas turbines in the U.S. Navy's future shipbuilding programs.”

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Digitalization Cases Vol. 2 1

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丛书名： Management for Professionals

1000年

作者： Nils Urbach Maximilian Röglinger Karlheinz Kautz Rose Alinda Alias Carol Saunders Martin Wiener

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Ernst Denert Award for software engineering 2022 1

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1000年

作者： Eric Bodden Michael Felderer Wilhelm Hasselbring Paula Herber Heiko Koziolek Carola Lilienthal Florian Matthes Lutz Prechelt Bernhard Rumpe Ina Schaefer

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