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  • A parametric analysis of the capabilities of undersea acoustic imaging

    Creator:
    Calligan, C. C.
    Abstract:
    The feasibility of utilizing acoustic imaging techniques for improving the undersea viewing capability of small submersibles is investigated. The limiting values of major parameters in acoustic imaging systems are established and graphs which illustrate the parametric relationships are presented. A series of sample calculations illustrate how the graphs can be...
    Resource Type:
    Masters Thesis
    Full Text:
    (PSAC) in their report of June 1966 (cited by Keil, 1968). The desirability of such a system for use on

  • Design of a mini-computer controlled digital integrated circuit tester

    Creator:
    Fasang, Patrick Pad, 1941-
    Abstract:
    The purpose of the thesis is to design, construct, program, and test an automatic integrated circuit test system. The class of integrated circuits tested was restricted to digital integrated circuits. The general concept of testing a digital integrated circuit is based on the truth table of that circuit. A combination...
    Resource Type:
    Dissertation
    Full Text:
    changing stored data. This tester can do 60 GO/NO-GO tests in a second. Monitor Systems, Inc., (48

  • An eraseable MOS read-only memory

    Creator:
    Johnson, Norman Leland
    Abstract:
    A non-volatile electrically alterable read-only memory using an MOS field effect transistor with a threshold voltage which depended upon the position of ionic charges for its memory was fabricated. The conventional silicon dioxide layer was replaced by a composite layer consisting of thermal silicon dioxide, electron beam evaporated aluminum oxide,...
    Resource Type:
    Dissertation
    Full Text:
    the gate metal and have no effect on the threshold voltage. If a positive voltage was applied to the

  • A computer controlled robot analyzer for in situ water quality monitoring

    Creator:
    Birch, Kenneth Norman
    Abstract:
    A new, computer oriented system for automatic, in situ monitoring of water quality is proposed which makes full and effective use of modern computer technology. The main objective of this thesis work was the development of the concept for in situ computer controlled experimenting as a reasonable and effective means...
    Resource Type:
    Masters Thesis
    Full Text:
    , the working electrode is main- tained in the zero current control mode so that no current flows

  • Hybrid computer simulation of wind-driven ocean currents

    Creator:
    Vithayathil, Francis Joseph
    Abstract:
    A simulation method using a hybrid computer is developed in this dissertation to enhance the study of wind-driven ocean circulation. The simulation is based on the mathematical model developed by Ekman. Pure digital simulation is not economical due to excessive computer time required for the solution of the partial differential...
    Resource Type:
    Dissertation

  • Preliminary design of the RTAF command and control two-level parallel computing system

    Creator:
    Meesajjee, Chulit
    Abstract:
    This paper investigates the benefit of various parallel processing architectures for a Command and Control system for the Royal Thai Air Force. Parallel processing has been shown to be useful for air defense and air traffic control applications. Its advantages are examined within the constraint imposed by the available resources...
    Resource Type:
    Dissertation
    Full Text:
    . They were very slow, when compared to current computers, being capable of performing no more than

  • A computer simulation model of land use dynamics in the State of Oregon

    Creator:
    Calligan, C. C.
    Abstract:
    The dynamics of land use in the State of Oregon are simulated on a digital computer. The introductory chapter outlines the complex nature of the problems facing the post-industrial society and argues that the scientific and professional estates share in the responsibility for public policy formulation. The second chapter .presents...
    Resource Type:
    Dissertation
    Full Text:
    than the rest of us, but learning rarely confers wisdom. . . They are no different than any other group

  • Liquid crystal thermography : a new system for breast cancer detection

    Creator:
    Bichara, Kamal Fouad
    Abstract:
    A liquid crystal thermographic technique was developed for application to several problems in clinical medicine and physiology. The procedure was inexpensive, rapid, simple, versatile and acceptable to patients. Investigators in the past have used cholesteric liquid crystals for thermography but their use was limited to research in the medical field...
    Resource Type:
    Dissertation
    Full Text:
    is that it may be viewed in real time since no scan is required. The time constant observed in L.C

  • REGTRAN and MICRO, the implementation of two digital system simulators

    Creator:
    Baheti, Padma R.
    Abstract:
    REGTRAN (REGister TRANsfer), a hardware description language and SYSSIM (SYStems SIMulation), a simulator for the system described by REGTRAN were originally developed by Edward Pett, Jr [33] at the University of Texas at Austin. These two programs are successfully used to simulate many digital systems of complex nature. It is...
    Resource Type:
    Masters Thesis
    Full Text:
    , no provisions exist for partitioning the system and the small vocabulary of the language

  • Digital techniques for change detection from remotely sensed data (Landsat-imagery)

    Creator:
    Eghbali, Hassan J.
    Resource Type:
    Dissertation
    Full Text:
    , no clouds are presented. The reference image can be of unknown quality. W. F. Weber suggested that