检索结果-内蒙古大学图书馆

Comments on and correction to "Axiomatic derivation of the principle of maximum entropy and the principle of minimum cross-entropy" (Jan 80 26-37) [Corresp.]

引用

IEEE Transactions on Information Theory 1983年第6期29卷 942-943页

作者： R. Johnson J. Shore Computer Science and Systems Branch Information Technology Division Naval Research Laboratory Inc. Washington D.C. DC USA

An error in the subject paper is pointed out: when the axioms given there are restricted to the discrete case, they do not imply the discrete case of the principle of minimum cross-entropy. The principle is shown to follow, however, from the adoption of an additional axiom: if new information is consistent with a prior estimate of a probability distribution, then the posterior estimate equals the prior. Minor other improvements and corrections to the arguments in the paper are made.

关键词： Phased arrays Couplings Entropy Phase locked loops Tracking Minimization

来源：评论

学校读者我要写书评

暂无评论

A generalization of isolated word recognition using vector quantization

A generalization of isolated word recognition using vector q...

引用

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： D. Burton J. Shore J. Buck Information Technology Division Naval Research Laboratory Computer Science and Systems Washington D.C. DC USA

The use of vector quantization (VQ) for isolated-word speech recognition of a 20-word vocabulary was shown in previous work to achieve more than 99% accuracy for speaker-dependent recognition and 87% accuracy for speaker-independent recognition. Separate VQ codebooks were designed for each word in the recognition vocabulary, and input words were classified by performing VQ and finding the codebook that achieves the smallest average distortion. The method obviates time-normalization and makes no use of time-sequence information. This paper presents results for a generalization that incorporates time-sequence information. The generalization, which was motivated by work of Martinez, Riveria, and Buzo, is more accurate and faster than the previous method. Words in the training and input sequences are normalized linearly to the same length and then divided into sections. Separate VQ codebooks are designed for each section of each vocabulary word. Each vocabulary word is then represented by a "multisection" codebook - a time-dependent sequence of section-codebooks. New words are classified by performing VQ and finding the multi-section codebook that achieves the smallest average distortion. Initial tests on a twenty-word vocabulary resulted in accuracies greater than 97% for speaker-independent recognition.

关键词： Vector quantization Vocabulary Linear predictive coding Distortion measurement Speech recognition Speech coding Shape measurement computer science Information technology Laboratories

来源：评论

学校读者我要写书评

暂无评论

Concurrent Error Detection and Testing for Large PLA's

引用

IEEE Journal of Solid-State Circuits 1982年第2期17卷 386-394页

作者： Khakbaz, Javad McCluskey, Edward J. Center for Reliable Computing Computer Systems Laboratory Departments of Electrical Engineering and Computer Science Stanford University Stanford CA 94305 United States

A system of checkers is designed for concurrent error detection in large PLA's. This system combines concurrent error detection with off-line functional testing of the PLA by using the same checker hardware for both purposes. The result is a significant saving in hardware cost. For a case example, the total hardware cost is estimated at about 37 percent of the original PLA area. The system is almost totally self-checking and, although the test patterns are not function-independent, their generation algorithm is simple. The total test time for the entire system is within the range of that of some recent PLA design schemes which were specifically aimed at simplifying off-line testing, but which have no provisions for concurrent error detection. Copyright © 1982 by the Institute of Electrical and Electronics Engineers, Inc.

关键词： Programmable logic arrays Circuit testing System testing Hardware Costs Fault detection Test pattern generators Logic arrays Logic testing Digital systems

来源：评论

学校读者我要写书评

暂无评论

A Solution To The General Guidance Error Problem Using An Adaptive Filter As A Trajectory Predictor

A Solution To The General Guidance Error Problem Using An Ad...

引用

IEEE Southeastcon

作者： W. Albanes R. Polge J. Belote US Army Missile Command Army Missile Laboratory AL USA Defense Systems Division Computer Science Corporation Huntsville AL USA

来源：评论

学校读者我要写书评

暂无评论

ADVANCES IN LONG-RANGE, HIGH-SPEED OPTICAL COMMUNICATION

引用

NAVAL ENGINEERS JOURNAL 1981年第4期93卷 39-48页

作者： BARTON, GG FELDMAN, S Mr. Sidney Feldman formerly with the Naval Applied Science Laboratory is presently with the Radiation Division of the Naval Surface Weapons Center White Oak Silver Spring Maryland. He planned and supervised laboratory experiments of many optical systems for fleet evaluation several of his designs now being standard in the fleet. He received his BA degree in Physics from Brooklyn College in 1941 and majored in Physics at the Brooklyn Polytechnic Institute. His professional memberships include the Optical Society of America American Association for the Advancement of Science and The Scientific Research Society of North America. He was the recipient of the Naval Ordnance Development Award in 1945 the Superior Achievement Award in 1957 the Quality Salary Increase Award in 1965 the Superior Accomplishment Award in 1967 1970 and 1979. Additionally he has been granted patents for a relamping tool for searchlights (1962) a lamp positioning mechanism for searchlights (1963) a daylnight digital sextant (1973) a portable sextant-computer system (1974) and with Mr. George Barton the remote-controlled LLLTV camera-sextant (1976) the automatic passive LLLTV-rangefinder (1977) and a patent disclosure for the omnidirectional transceiver (1980). Mr. George G. Barton has been employed by the Naval Research Laboratory Washington D. C. for the past ten years in the scientific and military application design engineering and fabrication of low light level TV camera systems. He was previously associated with the Smithsonian Institution and Northwestern University in the application of TV technology in astronomical investigations. He attended New York University Newark College of Engineering and New Mexico State University where he majored in Physical Optics. Presently he is with his own company BISMARC Inc. Harker's Island N.C. where he is involved principally in the design manufacture and marketing of sonar systems such as the unique VIDISEA fishscope research and development in electrooptic systems an

During periods of radio silence under Emission Control, communication depends on the slow ship-to-ship, manual-visual, 8-10 wpm Morse code signaling shutter searchlight employing the ac 1000-watt incandescent or the ac 1000-watt compact arc mercury-xenon lamp. These sources can be replaced by the dc compact arc xenon lamp to provide longer daylight ranges and highspeed (100 wpm teletype, 150 wpm Morse code, voice, etc.) communication since this source has superior brightness and the facility of considerably more rapid modulation. The excessive weight and size of the ac-dc power convertor and modulating circuitry which had prevented use of the dc xenon lamp have been overcome by developments in solid state electronics such as the rapid, high current, simmer-flash, 100 to one light output xenon lamp pulsing using the reliable, uncomplicated, low-cost silicon controlled rectifier shunt switch which could eliminate the mechanical signaling shutter. laboratory and sea evaluations have proved the feasibility of and provided the long daylight high-speed optical communication ranges that could be attained from operation of the dc 1000-watt and 2200-watt xenon lamps at the focus of 12-inch, 18-inch searchlights and in the Fresnel lens omni-directional beacon which a command ship uses to signal all ships in a task force at once. With these advances, optical communication provides the highspeed capability of radio communication, particularly, also, with the new omnidirectional transceiver.

关键词： SHIPS

来源：评论

学校读者我要写书评

暂无评论

MACHINERY ARRANGEMENT DESIGN - A PERSPECTIVE

引用

NAVAL ENGINEERS JOURNAL 1981年第3期93卷 133-141页

作者： RESNER, ME KLOMPARENS, SH LYNCH, JP Mr. Michael E. Resner:received an Engineering Degree from Texas A&M University in 1966 and has done graduate work in management at American University. He is Director Machinery Arrangements/Control Systems and Industrial Facilities Division (SEA 525) at the Naval Sea Systems Command. His previous positions have included Program Manager Solar Total Energy Program at the Department of Energy and Branch Chief Machinery Control Systems Branch at the Naval Ship Engineering Center. Mr. Stephen H. Klomparens:is a Naval Architect at Designers & Planners Inc. and is engaged in development of computer aids for ship design. He received his B.S.E. degree in Naval Architecture and Marine Engineering from the University of Michigan in 1973 and his M.S. degree in Computer Science from the Johns Hopkins University. Mr. Kolmparens began his professional career at Hydronautics Inc. in 1974 where he was involved in the use of marine laboratory facilities for test and development of conventional and advanced marine craft. Since 1977 he has been involved with naval and commercial ship design and with development of computer-aided ship design tools. Mr. John P. Lynch:is a Principal Marine Engineer with Hydronautics Inc. He was previously employed in the auxiliary machinery and computer-aided design divisions of the David W. Taylor Naval Ship R&D Center the machinery design division of the New York Naval Shipyard and the machinery arrangement code of the Bureau of Ships. His active naval service was as a ship superintendent in the production department of the Long Beach Naval Shipyard. Mr. Lynch received his B. S. degree in Marine Engineering from the New York State Maritime College and his M.S. degree in Mechanical Engineering from Columbia University. He is a licensed Professional Engineer in the State of New York and a member of ASNE.

The machinery arrangement design process has remained relatively unchanged over the years. Recently, external demands have been placed on both the product and the producers that call for changes to this process. This paper cites these external demands and traces the evolution of the process changes from the rule-of-thumb machinery box sizing routines up to the current automated procedures. The machinery arrangement design practice is presented, and existing analytic and graphics aids are discussed. The user requirements for improved design aids are presented, with implementation guidelines and hardware/software alternatives.

关键词：

来源：评论

学校读者我要写书评

暂无评论

THE PROSPECT OF AN UNDER WA TER NA VAL ROBOT

引用

Naval Engineers Journal 1980年第1期92卷 65-72页

作者： DIXON, JOHN K. JOHNSON, HERBERT A. SLAGLE, JAMES R. Dr. John K. Dixon was born on 1 December 1934 in Detroit. Mich. He received his B.S. degree in Electrical Engineering from Lawrence Institute of Technology in 1957 his M.B.A. degree from Wayne State University in 1964 his M.S. degree in Physics from the University of California at Davis in 1967 and his Ph.D. degree in Computer Science from the University of California at Livermore in 1970. In 1957 he was employed by the Chrysler Missile Division Warren Mich. where he designed circuits for the Redstoneand Jupitermissiles. In 1959 he joined the Staff of the Bendix Research Laboratory Southfield Mich. where he designed equipment for missile guidance systems and aircraft blind landing systems. From 1965 until 1968 he was a Research Assistant in the Artificial Intelligence Group Lawrence Radiation Laboratory. Livermore Calif at which time he left to join the Heuristics Laboratory of the National Institutes of Health Bethesda Md. as a Computer Scientist. In 1974 he moved to the Computer Science Laboratory at the Naval Research Laboratory. Washington D.C. where he is currently employed on various Research Projects. Mr. Herbert A. Johnson graduated from the U.S. Coast Guard Academy and later continued his graduate studies at Massachusetts Institute of Technology and Purdue University. receiving his M.S. degree in Electrical Engineering from the latter. He is presently a Captain in the U.S. Coast Guard Reserve and Head of the Ocean Instrumentation Branch. Ocean Technology Division Naval Research Laboratory (NRL). Prior to joining NRL in 1974 he was employed on various marine systems projects at Honeywell and on Polarisinstrumentation at Interstate Electronics a company he assisted in founding in 1956. He is a Senior Member of the Institute of Electrical and Electronics Engineers (IEEE). Dr. James R. Slagle received his M.S. and Ph.D. degrees from Massachusetts Institute of Technology and was the recipient of an Outstanding Blind Student Award for 1959 which was presented to him by President Dwight D.

This paper explores the concept of an underwater robot manipulator mounted on an unmanned submersible for the purpose of doing some undersea tasks of interest to the U.S. Navy. The robot concept is compared with other methods of doing work underwater and its strengths and weaknesses are enumerated. Such a robot would be able to do only simple, well‐defined tasks, but it would probably be the most economical way of doing those jobs which are within its competence. The jobs which such a device might be able to do are listed and evaluated in terms of how easy or difficult they are for a robot to do. From this analysis some conclusions are drawn about what capabilities are needed in such a robot. It is concluded that speed of operation is not critical (In contrast to robots which are intended for industrial jobs), but that the ability to cope with unexpected conditions and to recover from mistakes is very important. Next, existing robot technology and past research***are discussed and evaluated in terms of the needs of an underwater naval robot. Gaps in the technology are identified, and, finally, me suggestions for research are given. © 1980 American Society of Naval Engineers

关键词：

来源：评论

学校读者我要写书评

暂无评论

computer AIDS FOR SHIP DESIGN, INTEGRATION AND CONTROL

引用

NAVAL ENGINEERS JOURNAL 1980年第2期92卷 73-87页

作者： CARLSON, CM JOHNSON, RA HELMING, FW Mr. Craig M. Carlson received his B.S. degree in Naval Architecture and Marine Engineering from the University of Michigan in 1970 and began his career with the Department of the Navy at the Naval Ship Engineering Center (NAVSEC). In 1972. he returned to the University of Michigan under the NAVSEC Long Term Training Program and received his M.S. degree in Naval Architecture and Marine Engineering. After returning to the Ship Arrangements Branch at NAVSEC. he was assigned as Task Leader for General Arrangements for the PGG PCG PHM. and MCM ship designs and was awarded Outstanding Performance Awards in 1974 and 1975. In addition he was Manager of the Arrangement Subsystem of the Navy's Computer-Aided Ship Design and Construction Program (CASDAC). In October 1979. he became Manager of the CASDAC Hull Design System. Currently. he also is enrolled in the M.S. of Computer Science Program at Johns Hopkins University. Mr. Carlson previously has presented technical papers at ASNE Day 1974 and 1978 as well as at the 1979 DOD Manufacturing Technology Advisory Group Conference. Besides ASNE. which he joined in 1972. he is a member of SNAME. ASE. and the U.S. Naval Institute. Mr. Robert A. Johnson is a Naval Architect in Surface Combatants Design (SEA 03D3). Ship Design Integration Directorate Naval Sea Systems Command. He received an Associate in Engineering degree in Drafting and Design Technology in 1959. his B.S. degree in Aerospace Engineering in 1965. and his M.S. degree in Engineering Mechanics in 1970. all from the Pennsylvania State University. In 1973. he was selected for the NA VSEC Hull Division s Long Term Training Program at the University of Michigan subsequently receiving his M.S.E. degree in Naval Architecture in 1974. Mr. Johnson began his career with the Ordnance Research Laboratory at Pennsylvania State University in 1959 where he worked. on the design of hydroelastic submarine models and conducted research in the area of flow induced structural vibrations. In 1967 he joined HRB-Singer at State Colle

This paper presents an integrated approach to computer-Aided Ship Design for U.S. Navy preliminary and contract design. An integrated Hull Design System (HDS), currently under development by the Hull Group of the Naval Sea systems Command (NAVSEA 32). is the vehicle for the discussion. This paper is directed toward practicing ship design professionals and the managers of the ship design process. Primary emphasis of this paper, and of the development effort currently under way, is on aiding ship design professionals in their work. Focus is on integration and management control of the extremely complex set of processes which make up naval ship design. The terminology of the Ship Designer and Design Manager is used. The reader needs no familiarity with the technologies of computer science.

关键词：

来源：评论

学校读者我要写书评

暂无评论

DRAFT DESCRIPTION OF PASCAL

引用

SOFTWARE-PRACTICE & EXPERIENCE 1979年第5期9卷 381-424页

作者： ADDYMAN, AM BREWER, R BURNETTHALL, DG DEMORGAN, RM FINDLAY, W JACKSON, MI JOSLIN, DA REES, MJ WATT, DA WELSH, J WICHMANN, BA Department of Computer Science The University Oxford Road Manchester M13 9PL Software Department GEC Computers Ltd. Elstree Way Borehamwood Hertfordshire Department of Computer Science University of York Heslington York Y01 5DD European Software Engineering Digital Equipment Company Ltd. Fountain House The Butts Centre Reading RG1 7QN Computing Science Department University of Glasgow Glasgow G12 8QQ International Data Engineering Centre ITT Business Systems and Communications Group Latimer House Potters Bar Herts EN6 5DN Hull College of Higher Education Inglemire Avenue Hull HU6 7LJ Computer Studies Group The University Southampton S09 5NH Department of Computer Science Queen's University Belfast BT7 1NN Department of Industry National Physical Laboratory Teddington Middlesex TW1 0LW

This paper provides a description of the programming language Pascal. It has been published to enable those without easy access to the official BSI ‘draft for comment’ to comment on the description.

关键词： Pascal Standards

来源：评论

学校读者我要写书评

暂无评论

NAVAL COASTAL systems laboratory - UNIQUE INSITU TEST AND EVALUATION SITE

引用

NAVAL ENGINEERS JOURNAL 1978年第2期90卷 119-129页

作者： JOLLIFF, JV CALLAHAN, CM USN Capt. James V. Jolliff USNgraduated from the U. S. Naval Academy in 1954. Following graduation he served in the USS S. N. Moore (DD—747) and USS Cimarron (AO—22). He received his MS degrees in Naval Architecture from Webb Institute of Naval Architecture and in Financial Management from The George Washington University. He culminated his education at The Catholic University of America where he was awarded his Doctorate in Ocean Engineering in 1972. Capt. Jolliff has served in Naval Shipyards as Ship Superintendent Assistant Repair Officer and Assistant Planning & Estimating Superintendent and as such was primarily concerned with the repair and conversion of U. S. Navy skips. In addition he has served as Maintenance Officer Staff of Commander Mine Force U. S. Pacific Fleet as Co—Chairman of the Naval Engineering Division Engineering Department U. S. Naval Academy and as CV Design Manager in the Advanced Concepts Division and as Head Ship Survivability Office Naval Ship Engineering Center. An active member of ASNE since 1966 he has served as a member of the National Council and is currently the Chairman of the Journal Committee. He has had several papers presented at ASNE Day and published in the Journal and in 1976 was one of the recipients of the ASNE President's Award. At the present time he is assigned as the Commanding Officer Naval Coastal Systems Laboratory (NCSL) Panama City Fla. Mr. Casville M. Callahanis a native of Southwest Virginia where he attended Elementary and Secondary School prior to his three year's service in the U. S. Navy during World War II. He graduated from Lincoln Memorial University Harrogate Tenn. in 1950 receiving his BS degree in Mathematics. In 1952 he received his MS degree in Mathematics from Auburn University Auburn Ala. and taught mathematics at Lincoln Memorial University and at Florida State University Tallahassee Fla. prior to joining the staff of the Mine Defense Laboratory in 1955. He has progressed through a variety of assignments as the Labo

Test and Evaluation have become paramount in today's Department of Defense acquisition process. Therefore, the U. S. Navy requires both private and public facilities to accomplish the final goals of the “Fly before Buy” concept. Such a facility exists at the Naval Coastal systems laboratory (NCSL); an integral part of the Chief of Naval Material's, Director of Navy Laboratories organization. This paper briefly addresses the laboratory, its mission, and its history. This is followed by an in—depth facilities overview in order to create an understanding of the slow but steady evolution of NCSL's unique fixed facilities. These facilities, when coupled to the local natural environment, provide a unique in situ test and evaluation capability which is unequalled in the United States for assessing seagoing coastal systems. Of prime consideration is the Range Date Acquisition Center (RADAC) and Its ancillary subsystems for tracking, environmental monitoring, communications, and post run analysis. The paper is concluded with a discussion of both past and present use of the aforementioned facilities with an emphasis on user acceptance and future potential growth.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：