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Articles 1 - 23 of 23
Full-Text Articles in Engineering
A Simulation Model To Evaluate The Impact Of Provisioning On The Operational Availibility Of Navy Training Devices, Dale H. Pierce
A Simulation Model To Evaluate The Impact Of Provisioning On The Operational Availibility Of Navy Training Devices, Dale H. Pierce
Retrospective Theses and Dissertations
This paper presents the considerations that must be taken into account when formalizing a simulation model to determine the operational availability of a Navy training device. Consideration is given to those design and logistic support parameters that impact the general simulation model before it is formulated. These parameters, are then used as guidelines to collect and screen the data available for use in the general model. The general model is then translated into a computer simulation model. A specific training site is then chosen and data gathered to be used in the computer model. Design and logistic support parameters given …
Quantitative And Qualitative Responses Of Lake Eola To Urban Runoff, Timothy B. Walsh
Quantitative And Qualitative Responses Of Lake Eola To Urban Runoff, Timothy B. Walsh
Retrospective Theses and Dissertations
For temperate lakes which receive a variable nutrient loading with seasonal variance in their hydrology, it is necessary to consider the dynamic response of the lake to these variable nutrient loadings. An approach to evaluate Lake Eola water quality responses to dynamic discharge of nutrients is presented. The major source of nutrients for this lake is stormwater runoff containing nitrogen and phosphorus. A mass balance of nutrient sources and sinks for the period of one year (April 1980 - March 1981) was performed. To accomplish this, a field determination for various parameters of the hydrologic budget was performed on a …
An Optimal Algorithm For Detecting Pattern Sensitive Faults In Semiconductor Random Access Memories, Richard I. Subrin
An Optimal Algorithm For Detecting Pattern Sensitive Faults In Semiconductor Random Access Memories, Richard I. Subrin
Retrospective Theses and Dissertations
Random-access memory (RAM) testing to detect unrestricted pattern-sensitive faults (PSFs) is impractical due to the size of the memory checking sequence required. A formal model for restricted PSFs in RAMs called adjacent-pattern interference faults (APIFs) is presented. A test algorithm capable of detecting APIFs in RAMs requiring a minimum number of memory operations is then developed.
Heat Transfer Analysis Of A Lamphouse From A Typical Color Photographic Printer, William A. Toy
Heat Transfer Analysis Of A Lamphouse From A Typical Color Photographic Printer, William A. Toy
Retrospective Theses and Dissertations
High-speed operatorless photographic printers require high illumination levels at the negative print gate from lamps with stable color temperatures. The lamps using in these applications give off a large amount of heat radiation that is harmful to photographic emulsions as well as printer components and must be removed. This report describes how a typical photographic printer lamphouse separates the visible energy from the infrared, delivers the visible energy to the negative to be printed, and removes the infrared energy from the housing. This report also develops a set of empirically derived equations, which analytically describe the cooling mechanisms. These equations …
Trihalomethane Precursor Reduction Using Magnesium Coagulation, Christianne C. Ferraro
Trihalomethane Precursor Reduction Using Magnesium Coagulation, Christianne C. Ferraro
Retrospective Theses and Dissertations
This study investigated the effectiveness of the magnesium coagulation process in reduction of trihalomethane (THM) precursors. The water was obtained from Lake Washington, a highly colored potable water supply which is used by the City of Melbourne, Florida. The THM concentrations in the finished water at Melbourne currently exceed the THM standard of 0.1 mg/l. For Lake Washington water, treatment varies according to seasonal changes in water quality. During the dry period, the recycle magnesium does not perform effectively as a coagulant for THM precursor removal. This is because of the high levels of magnesium in the late water at …
A Synchronous Phase Detection System For An Optical Interferometric Sensor, Ira J. Bush
A Synchronous Phase Detection System For An Optical Interferometric Sensor, Ira J. Bush
Retrospective Theses and Dissertations
A system has been developed to accurately detect phase produced in optical interferometric sensors. The system employs optical heterodyning and synchronously detects optical phase by feeding back an error signal to a phase modulator in the reference leg of the interferometer. This system is seen to have properties similar to a phase-locked loop used for the demodulation of FM signals. The system is modeled and found to be of second order and nonlinear. A linear approximation to the original model serves to accurately describe the system in synchronous operation and is corroborated with well matched empirical data. The nonlinear model …
An Energy Resource Allocation Model For The University Of Central Florida Central Energy Plant, Mohammed A. Chamma
An Energy Resource Allocation Model For The University Of Central Florida Central Energy Plant, Mohammed A. Chamma
Retrospective Theses and Dissertations
The demand for energy increases every year, and it is important that we ensure that the energy consumed is used efficiently. This study examines a system which provides energy in multiple forms from multiple energy sources using multiple energy conversion equipment. Such a system is termed a Central Energy Plan (CEP). A linear programming model was formulated to provide a close approximation of a CEP operation. It was used to determine the optimal operating configuration, that is, which equipment should be on or off at a particular time of the day to minimize the operating cost of the plant while …
Selective Removal Of Color, Toc, And Thm Precursors From A Highly Colored Recycled Magnesium Sludge Using Granular Activated Carbon, Kathleen O. Gill
Selective Removal Of Color, Toc, And Thm Precursors From A Highly Colored Recycled Magnesium Sludge Using Granular Activated Carbon, Kathleen O. Gill
Retrospective Theses and Dissertations
The study investigated the ability of granular activated carbon (F-400) to remove organic color, TOCk and THM precursors from a highly organic-laden recycled magnesium sludge without reducing the magnesium concentration. This treatment was attempted in order to render the sludge a more effective coagulant for surface water purification. Adsorption effectiveness was assessed through Freundlich isotherms and continuous-flow GAC columns, with both procedures conducted at three pH values. Color and TOC were adsorbed more effectively at lower pH values, while adsorption of THM precursors was inhibited at low pH. Magnesium was not significantly adsorbed by the carbon. The carbon treatment of …
Impact Of Alum Sludge On Lake Sediment Phosphorus Release And Benthic Communities, David B. Jellerson
Impact Of Alum Sludge On Lake Sediment Phosphorus Release And Benthic Communities, David B. Jellerson
Retrospective Theses and Dissertations
Alum sludge from a Tampa water treatment plant was found to significantly reduce phosphorus release from anaerobic bottom sediments. The kinetics of phosphorus uptake by the sludge was evaluated in batch reactors. Further, the impact of the sludge on benthic organisms was determined in aquarium systems. Aquariums were set up with sediments and organisms from various lake habitats. Organisms were allowed to establish themselves and then test aquaria were dosed with alum sludge to cover the sediments. Benthic survival and heavy metal uptake were evaluated. Favorable phosphorus uptake was demonstrated in the batch reactors. The uptake kinetics were found to …
An Inventory Of Public Water Supply Wells Owned And Operated By Orange County, Florida, Michael J. Henry
An Inventory Of Public Water Supply Wells Owned And Operated By Orange County, Florida, Michael J. Henry
Retrospective Theses and Dissertations
Orange County, Florida, through its Sewer and Water Department, own fifty active and ten inactive water treatment plants. These treatment plants have a total of ninety-four supply wells, sixty-four of which are actually in service. Most of these wells were obtained through purchase from private or investor owned utility companies. A file search was undertaken from records of the Orange County Sewer and Water Department, U.S. Geological Survey, former water system owners, and well drillers in order to compile all available information on these wells. Information was gathered on location, original drilling of the well, static water level and pumping …
Analysis Of Structural Dynamic Characteristics Of An Explosion Driven Hydrodynamic Conical Shock Tube, Walter R. Sanders
Analysis Of Structural Dynamic Characteristics Of An Explosion Driven Hydrodynamic Conical Shock Tube, Walter R. Sanders
Retrospective Theses and Dissertations
Previous tests of an explosion driven hydrodynamic shock tube revealed peak pressure data significantly lower than values predicted from the semiempirical scaling laws. It was hypothesized that part of the deviation was due to error in determining shock wave parameters and part might be due to measurement error caused by mechanical vibration of the tube. This investigation was conducted in two parts. In the first part, shock wave parameters were determined using a digital computer and curve fitting techniques to analyze digitized shock wave data. The second part involved determining the frequency components of the shock wave data noise content …
Designing Six Variable Combination Logic Circuits With The Ti-59, Brian M. Ashford
Designing Six Variable Combination Logic Circuits With The Ti-59, Brian M. Ashford
Retrospective Theses and Dissertations
A program has been written for the Texas Instrument's TI-59 hand-held calculator implementing the Quine-McCluskey minimization method for logic circuit design. This program is contained on multiple magnetic cards and provides the user with the capability for combinational logic minimization of circuit design problems containing up to six variables.
Industrial Engineering Applications Using Microcomputers, Farid Guediri
Industrial Engineering Applications Using Microcomputers, Farid Guediri
Retrospective Theses and Dissertations
Five computer have been developed for practical use by Industrial Engineers in a production environment. The programs cover the areas of, forecasting, learning efficiency, production control, network analysis and optimum equipment replacement policies. Theory, complete program documentation and case example, for each program, are presented. Programs are written in an interactive Basic mode and have been tested on the Radio Shack TRS-8-0 and Apple II Plus systems.
Digital Acoustic Tracking Analysis Program, George H. Ford
Digital Acoustic Tracking Analysis Program, George H. Ford
Retrospective Theses and Dissertations
The purpose of this report is to investigate the processing of tracking data for acoustic targets. The programs developed for two- and three- dimensional space calculate the target's position via "hyperbolic-fix" navigation (geometric) considerations using the Newton-Raphson algorithm. The computer programs and the tracking solution approach contained herein is based on knowledge of only the sensors' locations and the relative time-difference at which a target's referenced, singular, acoustic pressure wavefronts are received at the sensors. Omnidirectional sensors are found to be sufficient for the two-dimensional space tracking problem. However, it is found that the three-space problem required usage of directional …
Testing The Radio Shack Random Number Generator To Produce Uniform And Non-Uniform Random Numbers, Enrique Menendez
Testing The Radio Shack Random Number Generator To Produce Uniform And Non-Uniform Random Numbers, Enrique Menendez
Retrospective Theses and Dissertations
Random numbers are a basic part in a Simulation Model, and they are also used in random sampling. These techniques are employed by quality engineers in the successful execution of their jobs. The every-day use of random numbers, however, often leads to a sense of complacency in he mind of engineers toward the exacting requirements that should be satisfied by the random number process to generate a genuine random number. Microcomputers have become a common and powerful tool that helps managers and engineers in their simulation experiments by providing sequences of random numbers. This research presents a sequence of eight …
An Experimental Comparison Of Cross Correlator Performances Based Upon Signal-To-Noise Ratios, Sunder G. Gopani
An Experimental Comparison Of Cross Correlator Performances Based Upon Signal-To-Noise Ratios, Sunder G. Gopani
Retrospective Theses and Dissertations
Three commonly employed types of cross correlators were designed using standardized components which closely simulate idealized elements in an effort to experimentally verify the theoretical analysis. These cross correlators are (1) the standard analog cross correlator which consists of bandpass filters, a multiplier and a postmultiplier lowpass filter, (2) the polarity coincidence correlator (PCC) which utilizes a hard clipper in each input channel, and (3) a modified type of PCC which features a hard clipper in only one of the input channels. Two different types of filters viz. (1) the seventh-order Butterworth lowpass filter, and (2) the five-pole Chebyshev lowpass …
Project Network Scheduling With Limited Resources Using Heuristic Solution Techniques, Enrique J. Daboin Rojas
Project Network Scheduling With Limited Resources Using Heuristic Solution Techniques, Enrique J. Daboin Rojas
Retrospective Theses and Dissertations
Traditional critical path methods imply the assumption of unlimited availability of resources. Mathematical models and heuristic techniques are two alternatives that consider resource limitation to sequence the activities of a project. This research explores the consideration of project scheduling under resource constraints for the specific case of single resource, single project scheduling. A computer model called GENRES-II search model is developed using a modification of Brooks' algorithm to develop project schedules. The criteria used are various weighted combinations of ACTIM, ACTRES and ACTFOL. An improvement of GENRES-II solutions is obtained when the best set of GEN-II values is input to …
Economics Of Residential Heat Recovery Units, Muhammad N. Redhwi
Economics Of Residential Heat Recovery Units, Muhammad N. Redhwi
Retrospective Theses and Dissertations
Determining residential airconditioning waste heat recovery system costs and savings is achieved using a computer program. A worksheet is designed to accept consumer data as an input to the program. The program features load and waste heat recovery calculations on a monthly basis. Economic criteria, including rate of return, present worth, and payback period are computed. Sensitivity of these criteria to fuel escalation and consumer discount rate is demonstrated. the program provides the user with both thermal analysis and economic analysis summary reports.
Analysis Of A Solar Collector In An Absorption Cycle Including A Pump Operated By Thermoelectric Cells, Stuart Jee-Fong Chen
Analysis Of A Solar Collector In An Absorption Cycle Including A Pump Operated By Thermoelectric Cells, Stuart Jee-Fong Chen
Retrospective Theses and Dissertations
A mathematical computer model has been developed for the prediction of the thermal performance of a flat-plate solar collector used as the generator for an absorption cycle cooling system. The system employs thermoelectric cells to power its pump. The exponential relationship between the auxiliary energy and the collector area is used to optimize the system. It is predicted that the system will become feasible when the fuel price is raised to four times the current value.
A Model For Assessing The Economic And Energy Savings Implications Of Cogeneration With Steam Turbines In Citrus Processing Plants, Harold L. Carpenter
A Model For Assessing The Economic And Energy Savings Implications Of Cogeneration With Steam Turbines In Citrus Processing Plants, Harold L. Carpenter
Retrospective Theses and Dissertations
A cogeneration system using a noncondensing steam turbine to simultaneously provide electricity and process steam to a citrus plant was modeled in order to assess the source energy savings and the economic implications with the employment of this type system under conditions of time varying plant energy demand. Average monthly energy demand data from on citrus plant was analyzed. It was determined that the important parameter, in addition to a minimum demand level, for assessing economic acceptability is the demand thermal to electric ratio. One set of steam conditions will not necessarily provide the maximum source energy savings and at …
Comparative Study Of Inflation Techniques Currently Used In Engineering Economy Studies, Thinh P. Dong
Comparative Study Of Inflation Techniques Currently Used In Engineering Economy Studies, Thinh P. Dong
Retrospective Theses and Dissertations
Recent increases in inflation rates make it essential that inflation be considered and properly treated in engineering economic studies. This research report presents a survey to determine how practitioners of engineering economics are accounting for inflation in their studies. After looking at inflation in general, and defining it, this report identifies the major existing techniques of handling inflation. It then discusses each in terms of advantages and disadvantage in evaluating investment projects. Finally, the report recommends an appropriate technique, and presents a computer program which calculates the present worth based on this technique which permits the user to analyze the …
Ground Access To The Orlando International Airport: Design And Evaluation Of Various Mass Transportation Alternatives, George S. Fan
Ground Access To The Orlando International Airport: Design And Evaluation Of Various Mass Transportation Alternatives, George S. Fan
Retrospective Theses and Dissertations
This research presents designs and evaluations of various mass transportation alternatives for reducing the problem of the ground access congestion in the Orlando International Airport. The alternatives considered in this research are conventional bus service, minibus service, express bus service, light rail transit service, rail rapid transit service, and monorail service. Details of the origin-destination studies for the present traffic are given. A discussion of the various mass transportation alternatives is provided, with provisions for future systems expansion. Three economic evaluation methods were used in this research for evaluation of various alternatives. According to the results of the economic analysis, …
A Mini-Computer Based General Purpose Interactive Computer Graphics Software System, Victor M. Haddock
A Mini-Computer Based General Purpose Interactive Computer Graphics Software System, Victor M. Haddock
Retrospective Theses and Dissertations
This research paper presents the description of a Mini-Computer Based General Purpose Interactive Computer Graphics Software System; which has been installed at the University of Central Florida, College of Engineering PDP 11/34 computer system. This system is a simplified version of MOVIE.BYU. MOVIE.BYU is a General Purpose Interactive Computer Graphics Software System that requires a computer with a word length of at least 32-bits. The MOVIE.BYU system was developed at the Brigham Young University, Utah. Extensive modification was required in order to satisfy the PDP 11/34 FORTRAN IV compiler. In addition, the program routines have been overlayed in order to …