作者：
WU, PYKANE, HPELDER, RRREEVE, KMPhilip Y. Wu received a B.E. degree in naval architecture and marine engineering from National College of Marine Science and Technology
Taiwan and a M.E. degree in naval architecture and offshore engineering from U. C. Berkeley. Prior to joining John J. McMullen Associates Inc. (JJMA) in 1983 he worked on hydrodynamic projects at Brown and Root Inc. Houston and at Baker Marine Engineers Inc. where he developed and designed various classes of offshore jack-up rigs and semisubmersibles. After transferring to the JJMA's Arlington Va. office he focused on U.S. naval ship structural designs. He is currently a senior naval architect and a member of ASNE SNAME and ASME. Harry P. Kane is a senior project engineer in the Ship Modularity Section
John J. McMullen Associates Inc. Arlington Va. He has a B.S. degree from Woodbury University and has attended numerous other training programs at the Universities of Nevada California Texas and Virginia. He has been employed as a program management engineer on a wide spectrum of design programs ranging from space booster systems remote sensors underwater acoustic systems ship systems Navy RDT&E management and technical program analysis. Currently he serves as a project leader for the application of modular weapons to different ship design programs. He is a member of the ASNE Journal Committee the Security and Intelligence Foundation and a life member of ASNE and the American Defense Preparedness Association. Robert R. Elder received a B.S.E. degree in naval architecture and marine engineering from the University of Michigan in 1969. He was commissioned an engineering duty officer and served aboard USS Guam (LPH-9) and at the Naval Ship Engineering Center
Hyattsville Maryland. Prior to joining John J. McMullen Associates Inc. in 1980 he worked in various ship technical design disciplines at J.J. Henry Inc. and gained program management experience at Booz Allen Applied Research and Scientific Management Associates. He is currently the manager of the Ship M
The major objective of this paper is to describe a computer aided methodology for structural integration and analysis. Using the example of recent work in the installation of modular gun and vertical launch missile sy...
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The major objective of this paper is to describe a computer aided methodology for structural integration and analysis. Using the example of recent work in the installation of modular gun and vertical launch missile systems in warships, the reader is guided through a typical case of computer aided structural design and shock analysis, how the models are defined and tested, how the models are modified in order to be compatible with computer capacity, how structural elements are selected to simplify computations, and finally how the results of these operations are used to define the final product before construction and installation. With the maturation of the computer aided process as applied to the whole ship product, more attention must be focused on improving the individual elements of computer aided design (CAD), computer aided engineering (CAE) and computer aided manufacturing (CAM) and the integration of these processes and their products through computer integrated manufacturing (CIM). The application of the CAE techniques described herein to large maritime systems such as combatant, auxiliary and support, and commercial ships and to other large structures such as semisubmersible and fixed platforms is powerful and highly in demand. There is now a means to optimize large structural systems in terms of their discrete subsystems and components and harmonize the entire design while providing the proper design integrity at each successive level of detail.
A digital cartographic multisensor image database of excellent geometry and improved resolution was created by registering Shuttle Imaging Radar-B (SIR-B) images to a rectified Landsat Thematic Mapper (TM) reference i...
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A digital cartographic multisensor image database of excellent geometry and improved resolution was created by registering Shuttle Imaging Radar-B (SIR-B) images to a rectified Landsat Thematic Mapper (TM) reference image and applying intensity-hue-saturation enhancement techniques. When evaluated against geodetic control, RMSEXY values of approximately ±20m were noted for the composite S1R-B/TM images. The completeness of cartographic features extracted from the composite images exceeded those obtained from separate SIR-B and TM image data sets by approximately 10 and 25 per cent, respectively, indicating that the composite images may prove suitable for plani-metric mapping at a scale of 1:100000 or smaller. At present, the most effective method for extracting cartographic information involves digitizing features directly from the image processing display screen.
This paper summarizes the program that has been established during the past decade and the present situation in remotesensing techniques and applications in China. Special attention is given to the recent results tha...
It is shown that photochemical acceleration of the thermal relaxation rate in the stratosphere may be expressed as a matrix multiplication between a square matrix, which may be calculated for quite general conditions,...
It is shown that photochemical acceleration of the thermal relaxation rate in the stratosphere may be expressed as a matrix multiplication between a square matrix, which may be calculated for quite general conditions, and a vector representing the deviation of temperature from an equilibrium profile. Such a matrix is presented and its form discussed. Use of this matrix allows for temperature perturbations of any vertical scale and thus provides an accurate, as well as fast, method for calculating photochemical acceleration suitable for use in numerical models of stratospheric dynamics. the inclusion of the ozone 9.6 m̈m band into the heating rate calculations is shown to reduce the photochemical relaxation rate in the upper stratosphere.
Two major problems in deriving cloud amounts and physical properties from satellite imagery are the selection of suitable surface-type discriminators, which may vary as a function of time and place, and the extraction...
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Two major problems in deriving cloud amounts and physical properties from satellite imagery are the selection of suitable surface-type discriminators, which may vary as a function of time and place, and the extraction of cloudiness on the subpixel scale. We present a method of retrieving suitable parameters for such discriminations on the local scale, based on the information contained in a bispectral (visible and 11 μm infrared) histogram. The application of these parameters to the retrieval of cloud information on both the pixel and subpixel scales is demonstrated.
Studies of the Earth's radiation budget from polar orbiting satellite systems, such as the forthcoming NASA Earth Radiation Budget Experiment, suffer from errors due to a poor temporal sampling of the diurnal vari...
In this paper we summarise the current understanding of Martian condensate and dust clouds. The paper is particularly concerned with the spatial, temporal and seasonal characteristics of the clouds. The condensate clo...
This paper describes the characteristics of currents around Hokkaido using a current vector map compiled by chasing the displacement of sea marks on a pair of successive thermal infrared images taken from a satellite,...
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