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SIMPLE APPROACH TO REFLECTANCE ANALYSIS OF BIREFRINGENT STRATIFIED FILMS

APPLIED OPTICS 1991年第28期30卷 4017-4018页

作者： KNOESEN, A []The author is with the Department of Electrical Engineering Computer Science Organized Research Program on Polymeric Ultrathin Film Systems University of California Davis Davis California 95616

A simple analysis is presented of reflectance from a stratified uniaxial media with the optic axes parallel or perpendicular to the plane of incidence.

关键词： UNIAXIAL FILMS POLED POLYMERS THIN FILM BIREFRINGENT

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Performance analysis of network and database transactions in a CIM system

Performance analysis of network and database transactions in...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： J.S. Joshi A.A. Desrochers CIM Program Digital Equipment Corporation Troy NY USA Electrical Computer and Systems Engineering Department Rensselaer Polytechnic Institute Troy NY USA

A Petri-net-based integrated model for the performance analysis of network and database transactions, generated by manufacturing clients for the computer resources, which are acting as the servers, is discussed. A Petri-net-based multifaceted integrated modeling (PNBMIM) approach to investigate the relevant system integration issues between the logical and the physical access of the information in the manufacturing system is described. The PNBMIM approach proposes an integrated conceptual framework for modeling and performance (both structural and behavioral) analysis of data flow and communication flow. This framework should provide some answers to the impact of relative time-scales on the coupling and decoupling of the various levels of a computer integrated manufacturing (CIM) system and identify the time-scales where integration becomes important.< >

关键词： Performance analysis Transaction databases Intelligent networks computer integrated manufacturing computer aided manufacturing computer networks Data analysis Network topology Petri nets Virtual manufacturing

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SMALL SHIPS, ADVANCED TECHNOLOGY AND WARFIGHTING PERFORMANCE

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NAVAL ENGINEERS JOURNAL 1991年第3期103卷 30-45页

作者： SKOLNICK, DH SKOLNICK, A David H. Skolnickhas practiced naval engineering in both government and industry. He has supported the Military Sealift Command and the Naval Sea Systems Command Ship Design Group and Amphibious Ship Acquisition Program Office participating in the design and assessment of ship structure evaluation of intact and damaged stability and arrangements during design and construction phases of acquisition conversion and overhaul. He is currently involved in systems engineering and integration. Recent responsibilities have included requirements analyses and feasibility studies interface analyses and computer aided analyses. He received his B.S. in naval architecture and marine engineering from Webb Institute of Naval Architecture in 1982 (as an ASNE scholar) and is currently an M.S. candidate in systems engineering at the University of Virginia. Alfred Skolnickserved over 30 years as an engineering duty officer and retired from the Navy with the rank of captain in 1983. His early assignments included tactical missile engineering shipboard duty and Polaris submarine inertial navigation. He later served in the Deep Submergence Systems Project was project director surface effect ships (SES) David Taylor Model Basin director of technology Joint Navy-Commerce SES Program director combat systems Naval Sea Systems Command and project manager directed energy weapons. His awards include the Navy League's Parsons Award in 1979 for scientific and technical progress ASNE's Gold Medal in 1981 for high energy laser development the Navy Legion of Merit in 1983 National Capital Engineer of the Year in 1986 and the American Defense Preparedness Association Gold Medal in 1988 for contributions to strategic defense. He was president of ASNE from 1985–1989. He received his B.S. in mathematics from Queens College his M.A. in mathematics from Columbia University his M.S. in electrical engineering from U.S. Naval Postgraduate School and his Ph.D. in electrical engineering/applied mathematics from Polytechnic University. He w

Changing threat requirements and radical budget shifts imply that Navy operational needs will broaden and engineering solutions will face tougher constraints. Existing and emerging technology promise increased combat capability in smaller packages;space-based assets will allow operator orchestration of widely dispersed naval units via connectivity attributes previously unavailable. Tactical data relay by downlink may permit reallocation of responsibilities among several platforms, space, air, or seaborne, so ships can be outfitted for custom-use (sensing, unique data processing, high-firepower) and optimized to meet specific mission needs. These evolving capabilities demand a fresh look at ship concepts and prospective force structures consistent with global and fiscal realities. Warfighting performance formerly unknown in small ship design may offer a very effective solution to the intricate, interacting issues of falling defense budgets, diverse operational requirements and complex national priorities. Multimission ships which take advantage of new or current technology to reduce ship size, manning and cost could be affordable in sufficient numbers to meet our continuing worldwide obligations, complement our larger ships' force structure, and produce a balanced fleet. These same ships could satisfy U.S. maritime needs beyond the Navy and improve export trade through foreign military sales (FMS).

关键词： Naval Warfare

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ROLE OF SIMULATION IN RAPID PROTOTYPING FOR CONCEPT DEVELOPMENT

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NAVAL ENGINEERS JOURNAL 1991年第3期103卷 204-211页

作者： KING, JF BARTON, DE J. Fred King:is the manager of the Advanced Technology Department for Unisys in Reston Virginia. He earned his Ph.D. in mathematics from the University of Houston in 1977. He has been principal investigator of research projects in knowledge engineering pattern recognition and heuristic problem-solving. Efforts include the development of a multi-temporal multispectral classifier for identifying graincrops using LANDSAT satellite imagery data for NASA. Also as a member of the research team for a NCI study with Baylor College of Medicine and NASA he helped develop techniques for detection of carcinoma using multispectral microphotometer scans of lung tissue. He established and became technical director of the AI Laboratory for Ford Aerospace where he developed expert scheduling modeling and knowledge acquisition systems for NASA. Since joining Unisys in 1985 he has led the development of object-oriented programming environments blackboard architectures data fusion techniques using neural networks and intelligent data base systems. Douglas E. Barton:is manager of Logistics Information Systems for Unisys in Reston Virginia. He earned his B.A. degree in computer science from the College of William and Mary in 1978 and did postgraduate work in London as a Drapers Company scholar. Since joining Unisys in 1981 his work has concentrated on program management and software engineering of large scale data base management systems and design and implementation of knowledge-based systems in planning and logistics. As chairman of the Logistics Data Subcommittee of the National Security Industrial Association (NSIA) he led an industry initiative which examined concepts in knowledge-based systems in military logistics. His responsibilities also include evaluation development and tailoring of software engineering standards and procedures for data base and knowledge-based systems. He is currently program manager of the Navigation Information Management System which provides support to the Fleet Ballistic Missile Progr

A valuable technique during concept development is rapid prototyping of software for key design components. This approach is particularly useful when the optimum design approach is not readily apparent or several known alternatives need to be rapidly evaluated. A problem inherent in rapid prototyping is the lack of a "target system" with which to interface. Some alternatives are to develop test driver libraries, integrate the prototype with an existing working simulator, or build one for the specific problem. This paper presents a unique approach to concept development using rapid prototyping for concept development and scenario-based simulation for concept verification. The rapid prototyping environment, derived from artificial intelligence technology, is based on a blackboard architecture. The rapid prototype simulation capability is provided through an object-oriented modeling environment. It is shown how both simulation and blackboard technologies are used collectively to rapidly gain insight into a tenacious problem. A specific example will be discussed where this approach was used to evolve the logic of a mission controller for an autonomous underwater vehicle.

关键词： Military engineering

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Navy's chlorofluorocarbon/Halon program

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Naval Engineers Journal 1991年第3期103卷 107-117页

作者： Krinsky, Joel L. Noel, William Joel L. Krinskyholds a B.S. degree from the U.S. Merchant Marine Academy (1960) and an M.B.A. from the American University (1966). He is currently the director of The HVAC Submarine Life Support Division within NavSea. He formerly served as the deputy director of the Auxiliaries Division and head of the Air Compressor/Forced Draft Blowers and Valves and Piping Branches within the Auxiliaries Division. He has thirty years experience in the marine engineering and computer fields. He sailed for two years in the merchant marine and then began his career in the Bureau of Ships in 1962 as a project engineer in the Boiler and Heat Exchanger Branch. Mr. Krinsky then served as the systems acquisition manager for navigation systems on attack submarines and aircraft carriers. Mr. Krinsky entered private industry with IBM in 1967 spent eight years in the computer industry serving in various capacities and returned to NavSea in 1975. He served in the U.S. Navy Reserve from 1961 to 1967 and is a member of ASE ASNE and ASTM. Mr. Krinsky currently chairs the ASTM subcommittee for shipboard HVAC (F25.11.07) and is writing the heating ventilation air conditioning and refrigeration chapter of the revised SNAME text on Marine Engineering. William Noelgraduated from Drexel University in 1984 with a B.S. degree in mechanical engineering. He worked at the Naval Ship Systems Engineering Station in Philadelphia in the Air Compressor Branch where he directed improvements to compressed air ship silencing systems. In 1985 he was hired at the Naval Sea Systems Command and spent two years working in the Auxiliary Machinery Division where he was life cycle manager for various air compressors and compressed air system components. In 1989 he earned an M.S. degree in mechanical engineering from the University of Maryland specializing in multi-phase fluid flow and heat transfer phenomena. Since 1987 Mr. Noel has been the project engineer charged with developing replacement refrigerants and fire fighting agents in executing the Navy CFC/

The Naval Sea systems Command is executing a three-phase program to ensure compliance with national regulations, DoD policy, and Navy instructions mandating the phase-out of CFC and Halon use by the Navy. The Navy uses significant quantities of CFCs and Halon as solvents, refrigerants, and fire-fighting agents both in military operations and through specifications and contracts for weapons and support equipment. Phase one of the program plan will be to conserve chemicals through reclaiming and recycling, and by establishing and maintaining a chemical inventory of CFCs and Halons. Phase two will research, develop, and test substitute chemicals and alternative technologies for existing CFC uses. This research will be pursued through Navy and government laboratories, cooperation with chemical and equipment manufacturers, and by participation in government/industry consortiums. Finally, phase three will deploy the replacement chemicals and new technologies into the fleet, and institutionalize the conservation measures developed in phase one. This paper discusses in detail the three phases of the Navy program, and relates the Navy effort to DoD policy, the Montreal Protocol, and Congressional legislation. Unique Navy concerns, research initiatives, and vintaging scenarios for existing equipment are presented.

关键词： Freons

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MAGNETOHYDRODYNAMIC SUBMARINE PROPULSION systems

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NAVAL ENGINEERS JOURNAL 1991年第3期103卷 141-157页

作者： SWALLOM, DW SADOVNIK, I GIBBS, JS GUROL, H NGUYEN, LV VANDENBERGH, HH Daniel W. Swallomis the director of military power systems at Avco Research Laboratory Inc. a subsidiary of Textron Inc. in Everett Mass. Dr. Swallom received his B.S. M.S. and Ph.D. degrees in mechanical engineering from the University of Iowa Iowa City Iowa in 1969 1970 and 1972 respectively. He has authored numerous papers in the areas of power propulsion and plasma physics and currently is a member of the Aerospace Power Systems Technical Committee of the AIAA. Dr. Swallom has directed various programs for the development of advanced power generation systems lightweight power conditioning systems and advanced propulsion systems for marine applications. His previous experience includes work with Odin International Corporation Maxwell Laboratories Inc. Argonne National Laboratory and the Air Force Aero Propulsion Laboratory. Currently Dr. Swallom is directing the technical efforts to apply magnetohydrodynamic principles to a variety of propulsion and power applications for various marine vehicles and power system requirements respectively. Isaac Sadovnikis a principal research engineer in the Energy Technology Office at Avco Research Laboratory Inc. a subsidiary of Textron Inc. He received his B.S. in engineering (1974) B.S. in physics (1975) M.S. in aeronautics and astronautics (1976) and Ph.D. in physics of fluids (1981) at the Massachusetts Institute of Technology. Dr. Sadovnik has been involved in research work funded by DARPA concerning the use of magnetohydrodynamics for underwater propulsion. He has built theoretical models that predict the hydrodynamic behavior of seawater flow through magnetohydrodynamic ducts and their interaction with the rest of the vehicle (thrust and drag produced). In addition Dr. Sadovnik has been involved in research investigations geared toward the NASP program concerning the use of magnetohydrodynamic combustion-driven accelerator channels. Prior to joining Avco Dr. Sadovnik was a research assistant at MIT where he conducted experimental and

Magnetohydrodynamic propulsion systems for submarines offer several significant advantages over conventional propeller propulsion systems. These advantages include the potential for greater stealth characteristics, increased maneuverability, enhanced survivability, elimination of cavitation limits, greater payload capability, and the addition of a significant emergency propulsion system. These advantages can be obtained with a magnetohydrodynamic propulsion system that is neutrally bouyant and can operate with the existing submarine propulsion system power plant. A thorough investigation of magnetohydrodynamic propulsion systems for submarine applications has been completed. During the investigation, a number of geometric configurations were examined. Each of these configurations and mounting concepts was optimized for maximum performance for a generic attack class submarine. The optimization considered each thruster individually by determining the optimum operating characteristics for each one and accepting only those thrusters that result in a neutrally buoyant propulsion system. The results of this detailed optimization study show that the segmented, annular thruster is the concept with the highest performance levels and greatest efficiency and offers the greatest potential for a practical magnetohydrodynamic propulsion system for attack class submarines. The optimization study results were used to develop a specific point design for a segmented, annular magnetohydrodynamic thruster for an attack class submarine. The design point case has shown that this thruster may be able to provide the necessary thrust to propel an attack class submarine at the required velocity with the potential for a substantial acoustic signature reduction within the constraints of the existing submarine power plant and the maintenance of neutral buoyancy. This innovative magnetohydrodynamic propulsion system offers an approach for submarine propulsion that can be an important contributio

关键词： Ship Propulsion

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SOFTWARE engineering TOOLS SUPPORTING ADISSA METHODOLOGY FOR systems-ANALYSIS AND DESIGN

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INFORMATION AND SOFTWARE TECHNOLOGY 1990年第5期32卷 357-369页

作者： SHOVAL, P MANOR, O Computer and Information Systems Program Department of Industrial Engineering and Management Ben-Gurion University of the Negev P.O. Box 653 Beer Sheva 84105 Israel.

In software engineering, computer-aided software engineering tools are used to implement the methodologies of development in an automated or semiautomated environment. A number of tools are presented that were developed to support ADISSA (Architectural Design of Information systems Based on Structure Analysis), a comprehensive methodology that treats analysis, design, and data modeling aspects as stages of a continuous process. This methodology covers in a unified way the stages of functional analysis, transactions (process) design, interface design, database schema design, input-output design, and structured prototyping. The personal computer-based ADISSA-supporting tools provide an automated environment that enables the analysts or designers, who work according to the methodology, to draw hierarchical dataflow diagrams and check their correctness, to design the transactions of the systems, the interface - a menu-tree - and the database schema, and to maintain an integrated data dictionary.

关键词： CASE tools database design interface design methodology software engineering structured analysis and design system development methodology

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A Ray Tracing program For Studying Acoustic Telemetry With Auvs

A Ray Tracing Program For Studying Acoustic Telemetry With A...

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OCEANS

作者： J. McCalla K.C. Baldwin J.D. Irish D.R. Blidberg K. Sivaprasad Ocean Systems Engineering Houston TX USA Ocean Engineering Program University of New Hampshire Durham NH USA Ocean process Analysis Laboratory University of New Hampshire Durham NH USA Marine Systems Engineering Laboratory University of New Hampshire Durham NH USA Electrical and Computer Engineering Department University of New Hampshire Durham NH USA

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ADVANCED TECHNOLOGY IN NAVY LOGISTICS SUPPORT

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NAVAL ENGINEERS JOURNAL 1990年第3期102卷 111-118页

作者： HOUTS, RE The Author:is the director of the Advanced Logistics Technology Division in the Naval Supply Systems Command (NavSup) Engineering and Quality Directorate. He is responsible for managing Nav-Sup's lead role Navy-wide in the research and development of techniques processes and systems to improve Navy readiness and productivity. In this role his office serves as the Navy's Computer-aided Acquisition and Logistics Support (CALS) primary support office. Mr. Houts has more than 19 years of government service as a career logistics manager including a year-long assignment in OSD. Prior to being selected for the senior executive service in December 1985 and accepting his current position Mr. Houts spent 15 years at the Naval Air System Command. He has had extensive experience in logistics program initiation on major aircraft systems and in the development of contractual documents to implement logistics programs. He holds a B.S. degree in aerospace engineering from the University of Michigan and an M.S. degree in systems management from the University of Southern California.

In the face of present and foreseeable budget constraints which will severely restrict the amount of funding available to provide logistics support to the Navy's operating forces, the Naval Supply systems Command's Advanced Logistics Technology Division is actively pursuing a number of efforts to apply current and emerging technology to improve logistics systems and methodologies. The engineering Data Management Information and Control System (EDMICS) program will automate the technical information process from initial acquisition through delivery to the end user, addressing the inability of current paper-based systems to cope with the tidal wave of information requirements for the effective management of weapon and logistics systems. Rapid Acquisition of Manufactured Parts (RAMP) program is applying computer integrated manufacturing (CIM) technology to the production of spare parts which are normally available only at great cost and with extensive lead time. The Standard Hardware Acquisition and Reliability program (SHARP) will standardize electronic system hardware (i.e., modules, power supplies, enclosures and batteries) to decrease development and logistics costs, while providing dramatic increases in component and system reliability. The Integrated Diagnostic Support System (IDSS) project is integrating diagnostic design into the weapon system development process to enhance the ability of the organizational level technician to detect and isolate system/equipment failures. This paper discusses each of these ongoing projects as well as a number of new initiatives being explored for future funding.

关键词： Military engineering

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SHIP SERVICE ELECTRICAL systems - DESIGNING FOR SURVIVABILITY

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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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