作者:
CHICKERING, JEQUALLS, WBJohn E. Chickering:is a systems analyst with American Management Systems
Inc. in Arlington Virginia. Mr. Chickering received his BS degree in marine engineering from the U.S. Merchant Marine Academy in Kings Point New York in 1981 and his MBA degree in operations research and statistics from the University of Maryland in 1985. He is a licensed third assistant engineer of steam and motor vessels and a member of the Naval Reserve. Mr. Chickering's work includes the design and specification of several management information systems for the U.S. Navy including one that will automate the Navy's engineering drawing management system. Most recently Mr. Chickering has helped develop a workstation for the Navy's Paperless Ship Initiative. William B. Quails:is a management consultant with American Management Systems
Inc. in Arlington Virginia. Mr. Quails received his BA degree in English from the Tulane University in New Orleans Louisiana in 1977 and his MPA degree in management science from the University of Georgia in 1982. Mr. Quails participated in the design and development of the U.S. Navy's Shipboard Non-tactical ADP Program II (SNAP II). Recently Mr. Quails has participated in the design and development of several knowledge-based computer systems using artificial intelligence programming technologies. Mr. Quails is a member of Pi Alpha Alpha an honorary public affairs and administration society.
The U.S. Navy relies heavily on advanced technology to carry out its missions. As a consequence, today's sailors are spending increasing amounts of time maintaining and repairing complex systems and equipment. In ...
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The U.S. Navy relies heavily on advanced technology to carry out its missions. As a consequence, today's sailors are spending increasing amounts of time maintaining and repairing complex systems and equipment. In performing these duties, sailors depend on supporting technical documentation. As the complexity of systems and equipment grow, the volume and complexity of this technical documentation also increases. As a result, technical information, one of the Navy's critical resources, is simultaneously becoming more vital and more difficult to use. The Navy is meeting this challenge by exploring innovative approaches to the management of technical documentation. One example is the Paperless Ship Initiative, which employs optical disk technology as the primary means for document storage. Optical disks can store large volumes of technical information in a small space. One way to take advantage of this auto mated access is to make technical information more readily accessible and easier to use. As an example, a technical manual can be organized on an optical disk into discrete segments of text and indexed for fast retrieval by section, subsection, or paragraph. Furthermore, mechanisms can be developed which allow computer-supported links between logically related segments of the text. This style of interface allows a user to interact directly with the textual passages and to establish new organizational and referential links between them. This style of interface falls under the general category of hypertext (also known as linked text ). The combination of optical disk storage and hypertext offers new possibilities for improving access to large volumes of technical documentation while maintaining all of the advantages of traditional paper-based documentation. This paper begins with a discussion of the need for better technical documentation support. Alternatives that can fulfill this need are reviewed and the role of hypertext is described. The paper illustrates a sample
This paper documents an experiment performed by The Johns Hopkins University Applied Physics Laboratory to measure the effect of inserting a data bus into a combat system. The experiment was conducted at the Aegis Com...
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This paper documents an experiment performed by The Johns Hopkins University Applied Physics Laboratory to measure the effect of inserting a data bus into a combat system. The experiment was conducted at the Aegis computer Center located at the Naval Surface Weapons Center in Dahlgren, Virginia (NSWC/DL). The purpose of the experiment was to determine whether or not the Aegis Weapon System (the core of the Aegis Combat System) could be operated with a portion of its point-to-point interelement cables replaced by a data bus. The data bus chosen for the experiment employs message broadcasting with receiver selection. A primary goal of the experiment was to minimize the amount of Aegis computerprogram changes required to accommodate the data bus. The results presented in this paper will show that the experiment was a success. Key certification tests were passed with no computerprogram changes to the tactical elements and minimal changes in the Aegis tactical executive (ATES) program (less than 110 words changed).
International antipollution requirements 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...
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International antipollution requirements 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 abatement equipment on all vessels. The equipment will consist of an oil-water separator in the bilge discharge line, followed by an oil content monitor which makes the final decision on whether or not the water is clean enough to be pumped overboard. The monitor is required to make a real-time measurement of oil concentration in the range 15 ± 5 to 100 ± 20 ppm for flow rates up to 50 gal/min. and possibly in the presence of interfering contaminants, such as rust. This paper presents the results of the current effort to develop a monitor which satisfies all of these requirements and is sufficiently rugged for fleet deployment. The monitor under development employs two fiber optic systems and a small microprocessor. The first optical system measures the concentration of particles in the flow as a function of their sizes, using small angle forward scattering. The second determines what percentage of the particles in the flow are oil, using large angle scattering. The microprocessor takes the data from the two optical systems and calculates the oil concentration in the flow. Since the particle size is measured by the monitor, no sample preparation is required and the monitor may be placed directly in the discharge line where it responds to changes in oil content in less than one second. In addition, this monitor can notify the operator of impending oil-water separator failure associated with passing large oil particles. A demonstration monitor consisting of the forward scattering unit has been successfully tested at the NavSea oil pollution abatement test facility at the Naval Ship systemsengineering Station at Philadelphia. The monitor agrees well with chemical means of measuring oil content. Results of this comparison and laboratory test of a prototyp
The depth-first picture expression (DF-expression) is a compact quadtree expression providing a high data compression capability. It is primarily a hierarchically structured data representation for binary pictures. Th...
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The depth-first picture expression (DF-expression) is a compact quadtree expression providing a high data compression capability. It is primarily a hierarchically structured data representation for binary pictures. The authors first review the basic ideas of the DF-expression, and its potential data-compression competence. Then the practical problem is studied of how much reduction can be achieved data by converting the expression to a binary coding. It is also shown that there are two directions in the DF-expression strategy for the gray-image coding. One is the bit-plane based, and the other is the three-dimensional (three-valued) DF-expressions. For most of the natural images, the bit-plane based strategy is more effective than the three-dimensional one. The reason for that is discussed.< >
作者:
BLACKWELL, LMLuther M. Blackwell:is presently the Data Multiplex System (DMS) program manager in the Bridge Control
Monitoring and Information Transfer Branch of the Naval Sea Systems Command (NavSea). He graduated from the University of Maryland in 1964 receiving his BS degree in electrical engineering. After graduating he was employed in the Bureau of Ships where he held project engineering assignments on various ships entertainment magnetic tape recording fiber optics computer mass memory and information transfer systems. He has also pursued graduate studies in engineering management at The George Washington University.
The Data Multiplex System (DMS) is a general-purpose information transfer system directed toward fulfilling the internal data intercommunication requirements of a variety of naval combatant ships and submarines in the...
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The Data Multiplex System (DMS) is a general-purpose information transfer system directed toward fulfilling the internal data intercommunication requirements of a variety of naval combatant ships and submarines in the 1990–2000 time frame. The need for a modern data transfer system of the size and capability of DMS has increased as various digital control systems throughout naval ships have adopted distributed processing architectures and reconfigurable control consoles, and as the quantity of remotely sensed and controlled equipment throughout the ship has increased manyfold over what it was in past designs. Instead of miles of unique cabling that must be specifically designed for each ship, DMS will meet information transfer needs with general-purpose multiplex cable that will be installed according to a standard plan that does not vary with changes to the ship's electronics suite. Perhaps the greatest impact of DMS will be the decoupling of ship subsystems from each other and from the ship. Standard multiplex interfaces will avoid the cost and delay of modifying subsystems to make them compatible. The ability to wire a new ship according to a standard multiplex cable plan, long before the ship subsystems are fully defined, will free both the ship and the subsystems to develop at their own pace, will allow compression of the development schedules, and will provide ships with more advanced subsystems. This paper describes the DMS system as it is currently being introduced into the fleet by the U.S. Navy. The results of its design and implementation in the DDG-51 and LHD-1 class ships are also presented.
作者:
TIBBITTS, BFKEANE, RGRIGGINS, RJCaptain Barry Tibbitts
USN: was graduated from the U.S. Naval Academy in 1956 and subsequently served as a gunnery division officer in an attack aircraft carrier and as gunnery officer operations officer and chief engineer in two diesel submarines. He attended MIT from 1962–1965 earning a master of science in mechanical engineering and a naval engineers degree. Early assignments as an engineering duty officer included SRF Yokosuka CINCPACFLT staff and SupShip Pascagoula. From 1976 to 1987 he served in a variety of senior ship design assignments: CVV ship design manager director NAVSEC Hull and Ship Design Divisions director NavSea Ship Design Management and Integration Office commander David Taylor Naval Ship R&D Center and director NavSea Ship Design Group. Recently retired but recalled to active duty he is the professor of naval construction and engineering at MIT. He has received seven personal decorations including two Legion of Merit awards. Robert G. Keane
Jr.:is currently the deputy director of the NavSea Ship Design Group. He has been employed by NavSea and its predecessor organizations for over twenty years. He is a graduate of The Johns Hopkins University from which he received his B.E.S. degree in mechanical engineering in 1962. He received his M.E. degree in mechanical engineering in 1967 from Stevens Institute of Technology and in 1970 his M.S.E. degree in naval architecture and marine engineering from the University of Michigan. Mr. Keane held increasingly responsible design positions involving ship arrangements hull equipment hull form and hydrodynamic performance before being selected in 1981 for the Senior Executive Service to be director of the Naval Architecture Subgroup. Following an assignment at the David Taylor Research Center as assistant for transition of ship engineering technology he served as director of the Ship Survivability Subgroup until assuming his current position in 1985. He is an active member of ASNE SNAME and ASE. Robert Riggins:received a B.S. in mechanical
Some fairly radical changes to the naval ship design process occurred during the 1970s. The decade of the 80s has also witnessed a steady stream of changes. One of the most significant was the establishment of the Shi...
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Some fairly radical changes to the naval ship design process occurred during the 1970s. The decade of the 80s has also witnessed a steady stream of changes. One of the most significant was the establishment of the Ship Characteristics Improvement Board (SCIB) in the Office of the Chief of Naval Operations (OpNav), and the resulting influence on the dialog between the military requirements decision makers and the Navy's ship designers. Other changes have occurred for which the impacts are less clear. These include establishment of the chief engineer of the Navy (ChEng) position, creation of the Space and Naval Warfare systems Command (SpaWar) and OpNav's “Revolution at Sea” initiative. This paper will describe and discuss these and other changes, and comment on the resultant impact. The authors will attempt to present a global view of the total pattern of changes and try to discern if we are on a path of revolution, or merely normal evolution.
This paper reports on the development of an on-line automated medical record system suitable for nursing homes. The software was written in standard MUMPS (Massachusetts General Hospital Utilities Multi-programming Sy...
Performance analysis is the process of determining the predicted performance of a weapons system. It is generally used to examine predicted performance of systems in a variety of configurations and operational situati...
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Performance analysis is the process of determining the predicted performance of a weapons system. It is generally used to examine predicted performance of systems in a variety of configurations and operational situations; it is accomplished through a variety of techniques, from the computation of straightforward algebraic functions to complex computer simulations. Performance analysis is necessary throughout the life-cycle of weapons systems. It is used to help determine original requirements, for conceptual and detailed design, and to support operational planning and determine upgrade requirements. The development, maintenance, and consistent application of a set of system specific performance analysis methods have enhanced the development of many weapons systems. This paper is in the form of a tutorial on the application of performance analysis techniques, using the development of the Aegis weapons system as a source of examples, and stressing the value of performance analysis methods which have been designed specifically for the Aegis system.
作者:
CARLSON, CMFIREMAN, HCraig 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 complexity of ships coupled with cost, schedule, and resource constraints require innovative methods by the Naval Sea systems Command's ship design community to meet this challenge. This paper ...
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The ever increasing complexity of ships coupled with cost, schedule, and resource constraints require innovative methods by the Naval Sea systems Command's ship design community to meet this challenge. This paper describes the effort by the NavSea Ship Arrangement Design Division to dramatically improve its ship design capability by the use of a system of computer-based design tools called the General Arrangement Design System. The General Arrangement Design System (GADS) is based on the engineering requirements of the ship arrangement design process. GADS is currently being used as a production engineering tool. This paper is organized into two parts. Part I describes the General Arrangement Design System, and Part II describes the general arrangement design methodology.
作者:
LAW, PEKUNIYOSHI, SMORGAN, TPPreston E. Law
Jr:. has been head of the Topside Electromagnetics Design Branch of the Naval Sea Systems Command since 1974. He began his specialized work in shipboard antenna systems design with the Navy in 1968. His prior experience includes employment as a communications systems engineer with the Defense Communications Agency in Thailand the Voice of America in Washington D.C. and the Federal Aviation Agency in Anchorage Alaska. Mr. Law is an electrical engineering graduate of the University of Maryland and a registered professional engineer in the State of Maryland. He is author of the book Shipboard Antennas numerous technical and freelance articles a Senior Member of the Institute of Electrical and Electronics Engineers (IEEE) member of the American Society of Naval Engineers (ASNE) Armed Forces Communications Electronics Association (AFCEA) Association of Scientists and Engineers (ASE) of NAVSEA and Tau Beta Pi and Eta Kappa Nu engineering honor societies. Seiji Kuniyoshi:is a senior project engineer in the Topside Electromagnetics Design Branch of the Naval Sea System Command where
since 1980 he has been engaged in the development of topside design for auxiliary ships minecounter-measure ships and patrol boats. Previously he was associated with Ferrotic Inc. as an electronics engineer. Mr. Kuniyoshi is a graduate of George Washington University from which he received his degree of engineer in electrophysics in 1981. He also holds a M.S.E.E. degree from Northwestern University (1961). Mr. Kuniyoshi is a member of the American Society of Naval Engineers (ASNE) Armed Forces Communications Electronics Association (AFCEA) Association of Scientists and Engineers (ASE) of NAVSEA and the Institute of Electrical and Electronics Engineers (IEEE). Thomas P. Morgan:has been working in the Topside Electromagnetics Design Branch of the Naval Sea Systems Command since 1984. He received his B.S. degree in electrical engineering and computer science at Marquette University just prior to accepting employm
Along with the recent development of shipboard weapon systems of substantial firepower, considerable interest has risen in the design of light-displacement, high-speed combatant patrol boats. However, there has been a...
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Along with the recent development of shipboard weapon systems of substantial firepower, considerable interest has risen in the design of light-displacement, high-speed combatant patrol boats. However, there has been an incorrect notion about patrol boats; “little boats have little problems.” From topside designers' point of view, little boats have many and big problems. Because of extremely limited shipboard topside space of this type ship, severe constraints are imposed for topside designers to effectively arrange shipboard combat systems, such as radars, fire control systems and communication equipment, to fully optimize the overall system performance and to sufficiently reduce electromagnetic hazards and interference (EMI). Recently, computer-aided design techniques have been extensively utilized in combatant patrol boat topside design by making effective use of NAVSEA's topside design model (TDM), which allows for interactive design in graphically illustrated topside arrangements. Combat systems effectiveness is analyzed in terms of elevation plane optical coverages, radar line-of-sight (LOS) range detection, and omni-directional antenna range prediction. The TDM algorithm includes the cumulative amplitude probability distribution of the HF communications range for the broadband fan and tuned whip antennas. The program is extended to analysis of the radiation pattern of directive antennas showing gain reduction principally due to blockage by superstructures. Finally, a set of candidate topside arrangements are proposed to the appropriate ship acquisition and design manager as feasible options to be pursued in the preliminary design phase.
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