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Articles 4441 - 4470 of 4566
Full-Text Articles in Engineering
Plating Wastewater Management, Earl Kenneth Ossorio
Plating Wastewater Management, Earl Kenneth Ossorio
Retrospective Theses and Dissertations
A study was made of existing methods of management, treatment and disposal of water and wastewater effluents at a large aerospace facility (Martin Marietta Aerospace) in Central Florida. Water consumption and handling were evaluated, with emphasis being placed on the handling of plating wastes, since they are the main contributor of industrial wastewater pollutants at the facility. The flow, storage, and treatment of the plating wastes were studied. Literature concerning plating wastes was surveyed to determine the latest "state of the art" on handling of plating pollutants. Then, the "state of the art" processes were compared with the existing processes …
Development Of A Uhf Digital Frequency Synthesizer For Distance Measuring Equipment, Claude A. Sharpe
Development Of A Uhf Digital Frequency Synthesizer For Distance Measuring Equipment, Claude A. Sharpe
Retrospective Theses and Dissertations
This report summarizes the design of a digital frequency synthesizer for airborne distance measuring equipment. It is the purpose of the frequency synthesizer to provide a stable frequency source for the local oscillator of the airborne receiver and for the power amplifiers in the transmitter chain. The synthesizer is required to furnish a frequency ranging from 260.250 mHz to 287.50 mHz in channel steps of 250 kHz at a power level of +7.0 dBm. the stability of the frequency must be greater than .005% over the temperature range of from minus 45 degrees centigrade to plus 55 degrees centigrade, requiring …
A Comparison Of Corrosion Rates Determined By Polarization Resistance Measurements For Zinc And Cadmium Metal Immersed In Nonstirred Aqueous Portland Cement Solution, William James Moore
A Comparison Of Corrosion Rates Determined By Polarization Resistance Measurements For Zinc And Cadmium Metal Immersed In Nonstirred Aqueous Portland Cement Solution, William James Moore
Retrospective Theses and Dissertations
The effect of nonstirred aqueous Portland cement solution on the corrosion rates of zinc and cadmium metal using Tafel extrapolation and linear polarization measurements has been investigated. Results indicate that for the corrosion systems under investigation, zinc metal has a higher corrosion potential and lower corrosion rate than cadmium metal.
Suspended Solids And Deep Well Injection Systems, D. Robert Smedley
Suspended Solids And Deep Well Injection Systems, D. Robert Smedley
Retrospective Theses and Dissertations
A test method and the associated equipment have been developed to investigate the effect of suspended solids on the flow of fluid into a deep injection well system. Preliminary testing indicates that the equipment and test method can be used to determine the permeability of rock samples with a high degree of accuracy. Additionally this equipment can be used in a testing program which will eventually lead to the development of guidelines for the degree of pre-injection treatment required for suspended solids so that the operational life of the well is not impaired.
Stormwater Management For Urban Areas, Gerald L. Chancellor
Stormwater Management For Urban Areas, Gerald L. Chancellor
Retrospective Theses and Dissertations
Stormwater management in urban areas is a major concern today. The problem of disposing of this stormwater runoff in a satisfactory manner is very difficult indeed. Both the quantity and quality aspects of the runoff must be dealt with to obtain a solution of this problem. The water quality of the runoff can vary depending upon the different land uses of the drainage basin. The quantity of the stormwater runoff also depends upon the land uses, the rainfall intensity and duration of the storm. The traditional methods available for determining the quantity of the stormwater runoff are numerous. These traditional …
Simulation Of A Spring Constrained Hypocyclic Roller Mechanism, Wayne R. Bomstad
Simulation Of A Spring Constrained Hypocyclic Roller Mechanism, Wayne R. Bomstad
Retrospective Theses and Dissertations
Hypocyclic mechanisms are the basic building blocks in the design of many widely used mechanical systems such as gear differentials, computing devices and other useful instruments. This paper presents a unique variation to the conventional hypocyclic system configuration in that the rotating elements are spring constrained instead of rigid arm constrained. A mathematical model was develop to simulate the operational characteristics of the mechanism. The model was coded in Fortran IV computer language and a simulation survey was conducted for a set of geometrical and system constraints. The results of this survey indicate that the mathematical model could be a …
"Storm", A Mathematical Model Applied To The Shingle Creek Basin, Jay G. Foy
"Storm", A Mathematical Model Applied To The Shingle Creek Basin, Jay G. Foy
Retrospective Theses and Dissertations
Stormwater management necessitates a regional plan based on the best practical methods. "Storm", a mathematical model, is employed to simulate runoff conditions in the Shingle Creek Basin. The computed runoff quantity is calibrated directly with the streams hydrograph. Runoff quality is predicted with two sets of pollutant loading rates. The scope of the model is expanded by development of parametric curves that can be used to convert measured quality data to input land use loadings. A parametric study is also performed to fabricate the effects of urbanization on the Shingle Creek Basin.
An Application Of "Storm" Mathematical Modeling For Evaluation Of Nonpoint Source Water Pollution For A Nonurban Watershed, John T. Izzo
An Application Of "Storm" Mathematical Modeling For Evaluation Of Nonpoint Source Water Pollution For A Nonurban Watershed, John T. Izzo
Retrospective Theses and Dissertations
Today, the engineer is faced with the task of predicting and evaluating the extent of the Nonpoint Sources that pollute our waterways. A mathematical model may be an extremely useful tool in helping the engineer solve problems in the area of water resources. During the course of this investigation, a literature survey related to the Econlockhatchee River Basin and to the "STORM" mathematical modeling technique for runoff evaluation has been conducted. The latter part of this report deals with an application of the "STORM" mathematical model for predicting quantity and quality of surface runoff for the Econlockhatchee River Basin located …
An Investigation Of Sewage Treatment Automation Techniques, Albert E. Namey
An Investigation Of Sewage Treatment Automation Techniques, Albert E. Namey
Retrospective Theses and Dissertations
No abstract provided.
Feasability Analysis Of Ramp Control Systems, A Simulation Approach., Henry Allen Popkin
Feasability Analysis Of Ramp Control Systems, A Simulation Approach., Henry Allen Popkin
Retrospective Theses and Dissertations
The ever increasing traffic congestion being experienced on urban freeways has caused attention to be focused on methods for improving traffic operations on these facilities. The reduction or elimination of freeway congestion can be handled in two basic ways: 1) by increasing the freeway's capacity defined as the number of vehicles per unit time that can pass a given point in one lane of the freeway multiplied by the number of lanes on the freeway, or 2) by decreasing the traffic loads imposed on these freeways. Monumental costs and adverse public relations are involved in the construction of either new …
An Automated Design Of Reinforcement Concrete Building Structures, Mehdi Bahremand
An Automated Design Of Reinforcement Concrete Building Structures, Mehdi Bahremand
Retrospective Theses and Dissertations
The purpose of this paper is to present the development and use of a computer program to perform an automated structural design of two dimensional static concrete structural systems. The structural systems considered herein are composed of reinforced concrete beams and columns connected by rigid joints. Structural systems composed of large numbers of joints and members may be analyzed by using the developed program. The paper presents the development of the structural analysis using the displacement method and matrix techniques and the development of the concrete axial-moment interaction criteria. This criteria is based on the ultimate strength design using the …
Computer Generated Holograms, Jeffrey James Gierloff
Computer Generated Holograms, Jeffrey James Gierloff
Retrospective Theses and Dissertations
Computer generated holograms have been made practical by the introduction of fast Fourier transform algorithms. The following discussion will brief the reader on the theory and concepts of optical holograms, the computer hologram, and the analogies of the computer hologram to its optical counterpart. Some of the programming aspects of the computer holograms are presented. The results of the generation of several computer holograms are presented, and conclusions drawn as to the effectiveness of this technique. Finally, some of the practical uses and advantages of the computer hologram are discussed.
A Search For A Computer Graphics System For The Small-Scale Computer User, Larry D. Holley
A Search For A Computer Graphics System For The Small-Scale Computer User, Larry D. Holley
Retrospective Theses and Dissertations
This paper presents a review of several computer graphics systems. The need for a universal graphics language is discussed and some typical languages are investigated. Several types of display terminals have been researched and their advantages and disadvantages have been listed. A vector plotting routine has been programmed on a microprocessor system as a part of the research. A description of the vector plotting system is included in this paper. The system could be a "modular unit" for general purpose use with any alphanumeric raster-scan display terminal and a simple graphics language.
A Review And Comparative Study Of Management Concepts Used By Department Of Defense, William Hanay
A Review And Comparative Study Of Management Concepts Used By Department Of Defense, William Hanay
Retrospective Theses and Dissertations
It is the intent of this paper to review the Acquisition Management SysternVProgram Management concepts of the major Armed Services comprising the Department of Defense (DOD), Army, Navy and the Air Force, and the System Management process associated with System Acquisition. As such, this paper reviews highlights of the DOD Program Management Acquisition Management Systems. The study is closely related to the writer's position at Naval Training Equipment Center. Being a DOD employee and operating in a technical environment, specifically in a position of employing the Program Management concept to in-house major tasks the need for more fully understanding and …
Digital Communication Systems Technical Control, Joel L. Horrell
Digital Communication Systems Technical Control, Joel L. Horrell
Retrospective Theses and Dissertations
This is a study of the methods of control of an advanced military communication system. The Tactical Communication Control System has been conceived to meet the demands of military users which are currently both analog and digital but steadily evolving to all - digital. It is a study of the design and application of multiplexers, modems, processors, switches, and other nodal equipment to accommodate communications among telephone and data users in a tactical environment. The main points of interest are the communication node and the control techniques used to carry out system objectives.
A Comprehensive Guide To Industrial Engineering Computer Software At Florida Technological University, Thomas Oliver Peeples
A Comprehensive Guide To Industrial Engineering Computer Software At Florida Technological University, Thomas Oliver Peeples
Retrospective Theses and Dissertations
The purpose of this manual is to provide a guide to Florida Technological University Computer Center programs which are commonly used for Industrial Engineering analysis. The user need not have extensive prior knowledge of computers to use this manual but an adequate understanding of the applied engineering techniques is recommended.
Nitrogen Transformation In Secondary Wastewater Treatment Plants, Mark Lee Morris
Nitrogen Transformation In Secondary Wastewater Treatment Plants, Mark Lee Morris
Retrospective Theses and Dissertations
Nitrogen is an essential nutrient for plant and animal life; however, its presence in concentrations exceeding assimilative capacities of receiving water bodies is undesirable. Therefore, the form and concentration of total nitrogen released in wastewater effluents is of great concern. During the course of this study, the nitrogen analysis was performed on the various unit processes of the Florida Technological University wastewater treatment plant. The average percent removal of nitrogen between plant influent and clarifier effluent was 30.5% during the month of August 1975. It is believed that the nitrogen removal is attributed to luxury uptake by the biomass through …
Stabilization System Environmental Disturbance Modeling And Analysis, Lawrence E. Sieb
Stabilization System Environmental Disturbance Modeling And Analysis, Lawrence E. Sieb
Retrospective Theses and Dissertations
Systems that operate in airborne environments and rely on the resolution provided by optical sensors require a stabilization system to isolate the line-of-sight (LOS) from the operating environment. For systems employing television sensors, stabilization accuracy is of prime importance in maintaining sufficient picture resolution to allow target identification and recognition at maximum ranges. The development of system models that accurately predict stabilization performance is important both in design trade-offs and in the system design and testing [l]. Two basic concepts are available for achieving LOS stabilization; momentum stabilization which employs a spinning mass and rate stabilization which utilizes inertial rate …
Computer Aided Analysis Of Flat Plate Solar Collectors, Thomas L. Hartman
Computer Aided Analysis Of Flat Plate Solar Collectors, Thomas L. Hartman
Retrospective Theses and Dissertations
A computer model of a flat plate solar collector has been devised. The model is able to simulate most common types of collectors, with up to three transparent covers of any material. Using primarily equations available from the literature the model calculates the transmission through the cover plates, the heat losses, and the useful heat gain. Derivation of all equations used are presented. A new method is presented for calculation of the mean plate temperature which differs from that commonly used in the literature. Experimental evidence is presented indicating that when transient effects are negligible the model is able to …
Test Methods For Evaluating Performance Of Solar Units, William Joseph Vitaliano
Test Methods For Evaluating Performance Of Solar Units, William Joseph Vitaliano
Retrospective Theses and Dissertations
This report is concerned with the performance of solar hot water units for laboratory and field use. A solar unit is defined as a system consisting of a collector, storage tank, piping system and controls. Older unites typically employ the thermosyphon principle (gravity) while more recent models use a water pump to circulate the water. Basically, the collector absorbs solar radiation and transfers thermal energy to the water flowing in the collector tubing. From the collector, the fluid is pumped to the storage tank at which point the hot water is available for usage. A literature search revealed that very …
A Network-Based Approach To The Repairman Queueing Problem, James A. Newton
A Network-Based Approach To The Repairman Queueing Problem, James A. Newton
Retrospective Theses and Dissertations
No abstract provided.
Error Rates In Narrow-Band Digital Fm Systems Operating In Various Interference Environments, Arthur M. Rodriguez
Error Rates In Narrow-Band Digital Fm Systems Operating In Various Interference Environments, Arthur M. Rodriguez
Retrospective Theses and Dissertations
No abstract provided.
The Future Of Nuclear Energy In Florida, James Wayne Edwards
The Future Of Nuclear Energy In Florida, James Wayne Edwards
Retrospective Theses and Dissertations
No abstract provided.
Aging Characteristics Of Aluminum-Silver Alloys, Paul Leray Reynolds
Aging Characteristics Of Aluminum-Silver Alloys, Paul Leray Reynolds
Retrospective Theses and Dissertations
The effect of single-step and two-step aging treatments on the tensile properties of an Al-6 wt. % Ag alloy and an Al-14 wt. % Ag alloy has been investigated. Results show that the tensile properties of these alloys were approximately the same whether they were given single or two-step aging treatments. Reversion treatments applied to the fully age-hardened Al-14 % Ag alloy after 15 minutes at various temperatures between 200 and 350 °C showed two maxima in the ultimate tensile strength and the yield strength. It is believed that this result was caused by two transformation processes occurring simultaneously: i.e., …
Application Of Computer War Gaming In The Evaluation Of Missile Performance Requirements For Air To Air Engagements, Joy F. Berman
Application Of Computer War Gaming In The Evaluation Of Missile Performance Requirements For Air To Air Engagements, Joy F. Berman
Retrospective Theses and Dissertations
No abstract provided.
Image Analysis And Improvement Of A Point Light Source Visual Flight Simulator, Steve K. Butrimas
Image Analysis And Improvement Of A Point Light Source Visual Flight Simulator, Steve K. Butrimas
Retrospective Theses and Dissertations
It has long been desired to simulate a non-preprogrammed controllable visual scene of the real world in a limited area for the purpose of training, in particular for aviation training. There presently exists a point light source projection system designed to accomplish this, however due to physical limitations, the display image, as compared to the corresponding real world scene which is being simulated, is somewhat distorted and limited. This point light source system is analyzed to determine the distortions and deviations from reality and methods are proposed to improve the display by minimizing the distortions and deviations.
An Analysis Of The Feasibility Of An Automatic Vehicle Locator System For The Orlando Police Department, Larry L. Lester
An Analysis Of The Feasibility Of An Automatic Vehicle Locator System For The Orlando Police Department, Larry L. Lester
Retrospective Theses and Dissertations
No abstract provided.
Steady State Oscillations In Switching Regulated Dc To Dc Power Supplies, Jayant Gajanan Vaidya
Steady State Oscillations In Switching Regulated Dc To Dc Power Supplies, Jayant Gajanan Vaidya
Retrospective Theses and Dissertations
No abstract provided.
A Predictive Model For Manpower Allocation In A Solid Waste System, Robert M. Anthony
A Predictive Model For Manpower Allocation In A Solid Waste System, Robert M. Anthony
Retrospective Theses and Dissertations
No abstract provided.
A Military Training System Perspective And Model For Training Program Management, Alvin J. Boudreaux
A Military Training System Perspective And Model For Training Program Management, Alvin J. Boudreaux
Retrospective Theses and Dissertations
A perspective of the Naval Education and Training System (NETS) is developed and utilized as a framework on which a simulation model of general training system activities is constructed. The simulation model, which is based on functional activities, emphasizes the interdependent consequences of decisions and actions created through management planning, analysis, and control of training programs. A simulation experiment was conducted using a test situation description (scenario) to reflect the impact of management decisions and actions on the resulting allocation of resources and timeliness of training program activities. Conclusions are drawn regarding the utility and implications of the system dynamics …