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Articles 1 - 30 of 32
Full-Text Articles in Engineering
Effects Of High Altitude Jet Aircraft On The Stratosphere, Dennis K. Bushnell
Effects Of High Altitude Jet Aircraft On The Stratosphere, Dennis K. Bushnell
Retrospective Theses and Dissertations
This paper presents a review of the basic thermal, chemical and radiation balances existing in the atmosphere and discusses the mechanisms by which jet engine exhaust products can disturb these balances. Possible effects of stratospheric pollution on plant and animal life are discussed. Methods for reducing harmful emissions through engine design modifications are outlined and current successful research programs are surveyed. The SST type aircraft is shown to be a greater threat to the environment than conventional jets because of differences in cruise altitudes. It is concluded that due to the existence of several potential environmental problems associated with contamination …
Remote Sensing Of Earth Resources System Capabilities V.S. Design Constraints, William Howard Grisham
Remote Sensing Of Earth Resources System Capabilities V.S. Design Constraints, William Howard Grisham
Retrospective Theses and Dissertations
There is new evidence that global earth resources satellite net will be practical. This paper weighs recent advances in remote sensing to pinpoint the dominant constraints. The data and sensor systems interfacing requirements are critically reviewed. It is shown that conventional optics constraints can be relaxed, with the newer systems, based on multi-spectral imagery and statistical processing methods. The most powerful computational methods use algorithms based on a Gaussian assumption for the species vector in feature space, but biases in the imagery limit their efficiency. A rationale is proposed: improving the observational network calibrating efficiency will also improve the photogrammetric …
A State-Of-The-Art Application Of Computer Technology-Vending Computer Generated Games For Profit, Stanley M. Levin
A State-Of-The-Art Application Of Computer Technology-Vending Computer Generated Games For Profit, Stanley M. Levin
Retrospective Theses and Dissertations
The recent and rapid advances in micro electronics technology has resulted in the continued and dramatic reduction in the cost and size of logic circuits used in computers and computer interfaced devices. This technology now makes it possible to purchase a sophisticated computer system and multiple terminal devices for less than $60,000. The subject of this Research Report is to show the feasibility of applying this computer system, including 32 phone line interfaced video display terminals and a time sharing software package, to vend computer generated games for profit.
Planning Programming Budgeting Study Of The City Of Winter Park, Alfred T. Sawicki
Planning Programming Budgeting Study Of The City Of Winter Park, Alfred T. Sawicki
Retrospective Theses and Dissertations
The report examines the applicability of Planning, Programming, and Budgeting System to the City of Winter Park. After briefly describing the character of the city, the goals are identified, the means by which they may be achieved and measure of evaluating progress toward them are given. To show how such an effort might be implemented, specific programs, objectives and effectiveness criteria are provided. These are followed by three examples in which the existing system is described and from which problems are revealed. Next, a brief analysis is performed to pinpoint the difficulty and a solution is proposed. The examples are …
A Nuclear Power Plant Simulator, John Jacob Adams
A Nuclear Power Plant Simulator, John Jacob Adams
Retrospective Theses and Dissertations
The United States' energy crisis, which has received so much publicity lately, has focused national attention on how we are to meet our energy demands. Proposed energy sources include conventional nuclear power plants, breeder reactor and fusion reactor plants, coal gasification, liquid hydrogen, solar energy, and geothermal energy. All of these except conventional fission plants are still on the drawing board or in the experimental laboratory, and are described briefly. Government and industry are betting heavily on conventional nuclear power plants. ($40 billion already spent by private utilities for 30 operating plants, 60 under construction, and 75 on order.) A …
The Application Of System Dynamics Techniques To War Game Modeling, G. Vincent Amico
The Application Of System Dynamics Techniques To War Game Modeling, G. Vincent Amico
Retrospective Theses and Dissertations
Military War Gaming has developed from the chess-like games to the elaborate computer simulations of today, using high-speed, general-purpose, digital computers. This Research Report will briefly review modern war-game developments with emphasis on real-time training systems. The application of system dynamics techniques developed by Jay W. Forrester to war-game modeling is explored. A simple destroyer versus submarine model is developed. Results indicate that the system dynamics modeling technique is a powerful and effective tool. However, the Dynamo language could be substantially improved by a more powerful logical statement capability.
Triggered Sweep Generators Using Modern Integrated Circuits, Arthur Russell Klinger
Triggered Sweep Generators Using Modern Integrated Circuits, Arthur Russell Klinger
Retrospective Theses and Dissertations
The oscilloscope is undoubtedly one of the most important tools in any electronics shop. Presently there are many relatively inexpensive oscilloscopes available, but triggered sweep capability is still reserved for those oscilloscopes costing more than 200 - 500 dollars. The goal of this project was to develop a respectably performing triggered sweep system at a low enough cost to allow inclusion of this valuable feature in any oscilloscope. Two of the most important specifications of an oscilloscope are the bandwidth of the vertical amplifier, and the maximum sweep frequency. The broad class of "inexpensive oscilloscope" would include those with a …
Digital Image Processing By The Two-Dimensional Discrete Fourier Transform Method, Lyman F. Joels
Digital Image Processing By The Two-Dimensional Discrete Fourier Transform Method, Lyman F. Joels
Retrospective Theses and Dissertations
No abstract provided.
Parametric Studies Involving Community Noise Exposure Around Airports, Eldon T. Day
Parametric Studies Involving Community Noise Exposure Around Airports, Eldon T. Day
Retrospective Theses and Dissertations
This report uses a computer program to study the effects of the following parameters on noise exposure forecast contours: 1. Aircraft mix, 2. Aircraft track, 3. Number of operations, 4. Time of day and 5. Aircraft thrust.
Computer Solution Of Linear Programming Problems Using The Decomposition Algorithm, Walter Paul Kraslawsky
Computer Solution Of Linear Programming Problems Using The Decomposition Algorithm, Walter Paul Kraslawsky
Retrospective Theses and Dissertations
No abstract provided.
A Stormwater Overflow Control Device, Richard Duke Stalker
A Stormwater Overflow Control Device, Richard Duke Stalker
Retrospective Theses and Dissertations
On Lake Eola, stormwater runoff has been identified as a major source of pollution. Other lakes in Central Florida are experiencing similar decay due to stormwater runoff. A device has been examined for diversion of the initial flows to treatment before discharge into the lake. A graphical aid was developed to select the proper volume required for the device and was applied to a Lake Eola existing collection basin. A laboratory model was designed and constructed based on the scaled-down version of a collecting basin on Lake Eola. This model was used to demonstrate the concept, as well as, indicate …
A Learning Machine For Job Sequencing In A General-Purpose Computer System, Richard Jon Taylor
A Learning Machine For Job Sequencing In A General-Purpose Computer System, Richard Jon Taylor
Retrospective Theses and Dissertations
No abstract provided.
Removal Of Color From Surface Water In Central Florida, Joseph R. Wanielista
Removal Of Color From Surface Water In Central Florida, Joseph R. Wanielista
Retrospective Theses and Dissertations
The USPHS limits color in water to 15 color units. However, it is desirable to remove all the color. Color in surface water is mainly due to humic substances and was found in concentrations varying up to 450 color units. Removal of color by coagulation and flocculation has been practiced over the years. The mechanisms involved have not yet been fully understood. During the course of this investigation, a literature survey, studying the nature of color, mechanisms or color removal, and optimum color removal conditions, has been conducted. Samples have been obtained from surface waters in Central Florida; namely Big …
An Evaluation Of Water Softening, James Burr Aton
An Evaluation Of Water Softening, James Burr Aton
Retrospective Theses and Dissertations
Dynamic modeling is proposed in this paper as a method of developing a computer model to simulate a water softening treatment unit. Information on water softening economics and ion exchange are examined. The development of a dynamic model is oriented toward uniform effluent water quality and operational flexibility. Several methods are presented to determine the reaction rate used in the completely mixed flow reactor's dynamic model. Based on preliminary data the proposed dynamic model would calculate removal rate similar to those found in an existing plant.
A Solid State Vhf Single Sideband Transmitter, Ermi Roos
A Solid State Vhf Single Sideband Transmitter, Ermi Roos
Retrospective Theses and Dissertations
This research report investigates a unique method of generating single sideband power, which is particularly useful in transistorized transmitters operating at VHF frequencies. Radio frequency power id developed by class C amplifiers, rather than conventional class A or B amplifiers. Currently, VHF power transistors are not well adapted for use as linear amplifiers, and will function far better in the class C mode. A prototype VHF transmitter which develops single sideband power with nonlinear amplifiers was designed and constructed. The transmitter characteristics were measured and analyzed to establish the feasibility of the new design.
The Design Of A Digital Data Acquisition System For Jet Engine Testing, Robert Wesley Carter
The Design Of A Digital Data Acquisition System For Jet Engine Testing, Robert Wesley Carter
Retrospective Theses and Dissertations
This research report documents the various types of Data Acquisition Systems in use for testing jet aircraft engines. The cost trade offs and design considerations are explored for systems which employ a digital computer as the prime recording/processing element. The digital computer has revolutionized the data acquisition field, particularly in the testing of high performance jet engines. Test data can be acquired, processed, converted to engineering units, and out via high speed line printers and cathode ray tubes (CRT's). The data acquisition system operates on-line, and interleaves the random requests for data from multiple test cells by using a specially …
Development Of A Radar Pulse Modulator, Eckard Friedrich Natter
Development Of A Radar Pulse Modulator, Eckard Friedrich Natter
Retrospective Theses and Dissertations
This report summarizes the design of a 25kW peak power pulse modulator for an airborne medium--range weather radar. It is the purpose of the modulator to collect and store energy over a certain time period and to form this energy into a short, high-power pulse. The modulator is required to drive a coaxial magnetron with a pulse of 5kV at 5A. System considerations make a pulse width of 3.5us and repetition rate of 99Hz necessary. The pulse is generated in a line-type pulse circuit which utilizes an SCR as a switching device. It is shown that a solid-state modulator can …
Investigation Of Sequential Machine Design Techniques For Implementation Of A Trac Scanning Algorithm, Raymond F. Cotton
Investigation Of Sequential Machine Design Techniques For Implementation Of A Trac Scanning Algorithm, Raymond F. Cotton
Retrospective Theses and Dissertations
This report will demonstrate the design techniques to translate a given scanning algorithm into a hardwired pre-processor. The language to be "pre-processed" is TRAC (Text Reckoning and Compiling) devised by Mooers and Deutsch. The major drawback in the current implementation of TRAC is speed. The software overhead required for string manipulations and execution of the input scanning algorithm is the major degrading factor. A TRAC machine consisting of a hardwired pre-processor to scan the input and produce formatted data for a stack oriented evaluator is proposed. The control machine for the input scanning algorithm for the pre-processor is designed using …
A Simplification Of Underwater Acoustic Equations, Morris G. Middleton
A Simplification Of Underwater Acoustic Equations, Morris G. Middleton
Retrospective Theses and Dissertations
This Research Report presents some of the equations of underwater acoustics that relate to the signal excess noise received by a transducer. The basic structural equation is developed, as are defining equations for each term in that equation. An analysis is performed utilizing typical values to ascertain if the elements of the structural equation can be simplified. Results delineate that several terms of that equation can be neglected while maintaining a relative high degree of accuracy.
The State-Of-The-Art Of The Coagulation/ Flocculation Process, David William Bouck
The State-Of-The-Art Of The Coagulation/ Flocculation Process, David William Bouck
Retrospective Theses and Dissertations
This report has been prepared with the idea of briefly summarizing the most important principles underlying the coagulations/flocculation process as it applies to water and wastewater treatment. The production of potable water from a supply which has been contaminated by naturally-occurring or man-made pollutants has been an object of concern throughout history. Several broad aspects have been considered in the report, such as the history, the nature and physical chemistry of colloidal particles, the theories of and the factors affecting coagulation/flocculation, and control of the coagulation/flocculation process. It is advisable for those persons engaged in the dynamic environmental sciences to …
The State-Space Approach To Network Synthesis, Gary Landis Hasty
The State-Space Approach To Network Synthesis, Gary Landis Hasty
Retrospective Theses and Dissertations
No abstract provided.
Comparative Methods-Simultaneous Solution Of Differential Equations, William Thomas Harris
Comparative Methods-Simultaneous Solution Of Differential Equations, William Thomas Harris
Retrospective Theses and Dissertations
No abstract provided.
Construction Systems For Detached, Single-Story Concrete Block Houses In Florida: Current Practices, Costs And Potential Innovations, Randolph Deshields Mcdonald
Construction Systems For Detached, Single-Story Concrete Block Houses In Florida: Current Practices, Costs And Potential Innovations, Randolph Deshields Mcdonald
Retrospective Theses and Dissertations
Concrete block single-story detached homes are popular residences in Florida, but construction materials and methods must undergo changes to combat rising prices and material shortages. Those systems with the greatest pressure of price or material shortage will change first. When current costs and methods are examine, it is found that two systems, roof and exterior walls, have the greatest need for changes in the immediate future; and one system, thermal insulation, needs an empirical study. The roof is of materials which are in short supply and rapidly increasing in cost. The study concludes that, with present cost trends, metal frame …
The Safety And Environmental Effects Of Nuclear Power Plants, Raymond E. Schweikart
The Safety And Environmental Effects Of Nuclear Power Plants, Raymond E. Schweikart
Retrospective Theses and Dissertations
The nuclear power plant has given new direction to power generation. It offers a new source of heat. The heat can now come from the fission of atomic fuel and not from the burning of fossil fuel. Safety and protection from the possible hazards of radioactivity generated by nuclear power plants is a completely new and untested area. Emergency systems and over designed construction are only part of what has to be done to make absolutely certain such accidents, if they occur, will be contained allowing no harmful radioactivity to reach the environment. Handling of radioactive wastes is very critical …
Permeability Determination For Landfill Studies, Joel George Smith
Permeability Determination For Landfill Studies, Joel George Smith
Retrospective Theses and Dissertations
This report reviews the state of the art with respect to permeability determination and sanitary landfills. Characteristics of the soil which determine the permeability are given. Processes which can change the permeability are discussed. Darcy's Law, the mathematical basis of permeability and its validity are discussed. Laboratory and field methods for determining the permeability are also discussed. Applications of determined permeability for design and management of landfills are also indicated.
Initial Flow Calibration Results From The Florida Technological University Four-Inch Supersonic Wind Tunnel, James K. Beck
Initial Flow Calibration Results From The Florida Technological University Four-Inch Supersonic Wind Tunnel, James K. Beck
Retrospective Theses and Dissertations
No abstract provided.
Accumulative Errors In Low-Level Mos-Fet Multiplexers, Lloyd Daniel Griffin
Accumulative Errors In Low-Level Mos-Fet Multiplexers, Lloyd Daniel Griffin
Retrospective Theses and Dissertations
This paper provides a brief historical discussion of the development of time division low level multiplexing techniques and especially emphasizes MOS-FET multiplexers currently being implemented. Error sources which may affect system accuracy and therefore must be considered in the design of the multiplexer are described. Some of the more significant of these errors: aliasing, interchannel crosstalk, static offset, transient coupled errors, and common-mode injected errors are analyzed and covered in detail. Equations expressing the overall interchannel DC crosstalk and static offset for a generalized multiplexer are derived and presented. Settling errors arising from transient events in time division multiplexers are …
A Study Of Finite Element Grid Optimizations, James G. Ladesic
A Study Of Finite Element Grid Optimizations, James G. Ladesic
Retrospective Theses and Dissertations
Any structural analysis which gives stresses and displacements for some predefined structure is governed by some physical domain of loading, geometry and boundary conditions. Let this domain be called the structures "problem space." In applying finite element analysis, the solution to any one problem space may be one of many admissible solutions all of which satisfy some given set of boundary conditions. Admissibility is determined by the stated problem with its boundary conditions along with computer storage capacity considerations. Obtaining the most exact approximate solutions is one of major concern to insure adequate results. This problem has been approached from …
A Study Of The Microwave Reflective Properties Of Aerosols, Paul Edward Speh
A Study Of The Microwave Reflective Properties Of Aerosols, Paul Edward Speh
Retrospective Theses and Dissertations
This thesis deals with the reflective properties of selected aerosols subjected to microwave radiation. The backscatter cross section of a sphere is developed analytically as a basis for experimental verification. The most pertinent material parameters necessary for maximum reflectivity are discussed and are used to justify the aerosols selected for the experiment. The experimental procedures and the equipment calibration techniques are prefaced by a discussion of the design and the construction of the aerosol chamber and the microwave source apparatus. The experimental results and the calculated backscatter cross section of the aerosols listed are examined. Conclusions are discussed and applications …
A Survey Of Medical Diagnostic Software, Steven Stein
A Survey Of Medical Diagnostic Software, Steven Stein
Retrospective Theses and Dissertations
The field of medical diagnostic software is reviewed to define its status in the medical profession. This is accomplished in a two-step procedure. The first step is a cross-section of literature on the topic, and the second step is a survey of physicians in a sample area. The cross-section of literature presents some of the more advanced studies which have been conducted on medical diagnostic software. Also presented is an explanation of the logic used in diagnostic software and the results of several test cases. The survey was of physicians in the Orlando, Florida area to define the actual application …