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Articles 1 - 30 of 37
Full-Text Articles in Engineering
Bipolar Bit Slice Microprocessors, Mack Duggan Cooley
Bipolar Bit Slice Microprocessors, Mack Duggan Cooley
Retrospective Theses and Dissertations
The purpose of this paper is to undertake a survey of state of the art high speed bipolar bit slice microprocessor elements. Three systems are discussed: The 2900 microprocessor family; the 10800 microprocessor family and the 8X02 microcontroller. A description of the microprocessor and microprogram controller elements for each family is presented and an example of the 2900 family is discussed.
Reliability Analysis Of Emergency Telephone System Models, Thomas J. Hobbs
Reliability Analysis Of Emergency Telephone System Models, Thomas J. Hobbs
Retrospective Theses and Dissertations
Several alternate systems for use in implementing the 911 emergency system in Orange County, Florida were investigated. The proposed systems were compared with the already existing systems on the basis of reliability, response time, and cost. System reliability was the prime consideration of the study. Flow charts of each system were formulated in order to determine the functions required of equipment and humans. The reliability was then determined by examining the difficulty of the tasks that each was required to perform. Reliability models of the present and proposed systems were constructed. By examining these models and comparing the reliabilities, response …
Simulation Model To Evaluate Performance Of Operational Systems And Their Impact On Repair Shop Activity At A Navy Field Site, James T. Newell
Simulation Model To Evaluate Performance Of Operational Systems And Their Impact On Repair Shop Activity At A Navy Field Site, James T. Newell
Retrospective Theses and Dissertations
This paper presents the background and procedures leading to development of a simulation model to analyze the impact of certain decision variables on operational system performance and workloads as the repair facility of a typical Navy field site. The research examines the impact of maintenance support concepts, as implemented by changes in the decision variables, associated with the broader application of Automatic Test Equipment. The initial effort consisted of data collection and field site surveys which culminated in defining a work flow model illustrating typical repair facility operations. The work flow model is translated into a computer simulation model. The …
The Theory And Application Of Frequency Domain Deconvolution Using Optimum Compensation In Time Domain Measurement, Robert Bruce Stafford
The Theory And Application Of Frequency Domain Deconvolution Using Optimum Compensation In Time Domain Measurement, Robert Bruce Stafford
Retrospective Theses and Dissertations
This thesis describes a method of transforming a deconvolution problem into an equivalent convolution problem. A short discussion of the theory behind convolution and deconvolution is included, along with a survey of techniques now being used. A new method using a synthesized compensator is proposed and mathematically developed. Finally, the results of applying this method to several real and analytical signals are given.
Optical Fiber Dispersion Characterization, Alan Edward Geeslin
Optical Fiber Dispersion Characterization, Alan Edward Geeslin
Retrospective Theses and Dissertations
This thesis discusses the dispersion of optical pulses in fiber waveguides. Procedures for determining the transfer function of an optical fiber using either time domain measurements or frequency domain measurements are given. A test set is described which uses time domain measurements for dispersion characterization. Complex transfer function data are presented for various fiber lengths as well as optical connectors. Prediction of bandwidths of long fibers from bandwidth/measurements taken on shorter length fibers is discussed. A relation between the bandwidth of cascaded connectors in terms of the bandwidth of a single connector is obtained.
A Microcomputer Implementation Of Real Time, Continuously Programmable Digital Filters, William Edward Storma
A Microcomputer Implementation Of Real Time, Continuously Programmable Digital Filters, William Edward Storma
Retrospective Theses and Dissertations
When a filter transfer function in s is replaced with the bilinear transform in z, the resulting discrete model represents the original continuous model within a second order accuracy of integration. A unique set of recently discovered minimum memory algorithms that perform the bilinear transform on a continuous transfer function are implemented on an INTEL 8080 microprocessor system. Scaling techniques are used to frequency scale all transfer functions to a standardized frequency. All data words are represented in a signed binary double precision format to maintain higher calculation speed and accuracy. Three test case transfer functions of different order are …
The Development Of New Filter Functions Based Upon Solutions To Special Cases Of The Sturm-Liouville Equation, Stephen Joseph Chapman
The Development Of New Filter Functions Based Upon Solutions To Special Cases Of The Sturm-Liouville Equation, Stephen Joseph Chapman
Retrospective Theses and Dissertations
Two common classes of filter functions in use today, Butterworth functions and Chebyshev functions, are based upon solutions to special cases of the Sturm-Liouville equation. Here, solutions to several other special cases of the Sturm-Liouville equation were used to develop filter functions, and the properties of the resulting filters were examined. The following functions were explored: Chebyshev functions of the second kind, untraspherical functions of the second and third kinds, Hermite functions, and Legendre functions. Filter functions were developed for each of the first five polynomials in each series of functions, and magnitude and phase responses were tabulated and plotted. …
The Effect Of Ozone On Trihalomethane Precursors In Raw And Magnesium Treated Lake Washington Water, James Kent Kimes
The Effect Of Ozone On Trihalomethane Precursors In Raw And Magnesium Treated Lake Washington Water, James Kent Kimes
Retrospective Theses and Dissertations
A bench scale laboratory ozonator was constructed and determined to produce 27 mg O3/hr. A contacting system and experimental procedure was developed to approximate a mass balance of 0, 1, 2, 4, 8 and 16 ppm were applied to raw and magnesium treated water from Lake Washington which is the potable water source for Melbourne, Florida. The effect of ozone on trihalomethane precursors was studied by comparing THM formation at 1, 24, 48, 72, and 96 hours following chlorination. The concentrations of each specie, chloroform, bromodichloromethane, dibromochlormethane and bromoform are reported. The highest 96 hour TTHM concentrations reported were 2773 …
A Feasibility Study Of Computer Aided Coding Of Ground Operations Aerospace Language (Goal), Harvey Glenn Lanier
A Feasibility Study Of Computer Aided Coding Of Ground Operations Aerospace Language (Goal), Harvey Glenn Lanier
Retrospective Theses and Dissertations
The introduction of a new checkout language at Kennedy Space Center has required more effort to create test and operations software than anticipated. The new language is called GOAL, for Ground Operations Aerospace Language. The feasibility of a computer aided GOAL coding system that would reduce the effort required to create GOAL programs is investigated in this report. A background of GOAL, its coding requirements, and the facilities used at present for GOAL coding is presented first. Next, the computer aided GOAL coding concept is presented, and requirements for such a system are developed. After the requirements are presented, a …
Ecological Responses Of Lake Eola To Urban Runoff, Harvey H. Harper Iii
Ecological Responses Of Lake Eola To Urban Runoff, Harvey H. Harper Iii
Retrospective Theses and Dissertations
Lake Eola is a land-locked lake located in downtown Orlando, Florida. Its surface area is approximately 27.0 acres (11.0 Ha) and water depth is 2 to 3 feet (0.6 to 0.9 meters) near the shore and 22 feet (6.7 meters) toward the center. Periodical water samples were collected from the lake and storm drains for various stormwater events and physiochemical parameters were analyzed to calculated loading rates from nutrients and heavy metals released to Lake Eola. Algal bioassay studies were performed to investigate stormwater impacts on productivity. Periodical water samples were collected from the lake mixed and filtered for limiting …
A Microcomputer Implementation Of A Flight Simulator Visual Display System, Jerry Wayne Campbell
A Microcomputer Implementation Of A Flight Simulator Visual Display System, Jerry Wayne Campbell
Retrospective Theses and Dissertations
The use of computer graphics has brought about a universal means of depicting phenomena or solving engineering problems. The combination of graphic and computer skills offers a solution to a number of technical needs. One major area that computer graphics can be used is in the field of flight simulation. The software packages necessary to project three-dimensional scenes for flight training are not very common. The purpose of this paper is to generate the programs necessary to allow the pilot to observe a three-dimensional scene from any location and angle. The report discusses some of the basic aspects of computer …
The Development Of Quiet Jet Engine Technology, Bradley D. Beck
The Development Of Quiet Jet Engine Technology, Bradley D. Beck
Retrospective Theses and Dissertations
The physical properties and subjective characteristics of sound and several special methods of measuring sound levels are discussed in order to provide a basic understanding of sound in general and noise in particular. The Federal Aviation Administration's regulation, FAR36, which stipulates the allowable perceived noise levels produced by commercial jet aircraft, is examined in detail. The principle of jet propulsion, the basic components of turbojet and turbofan engines, the theory of aerodynamic sound and the origin of the perceived noise decibel (which is the basic unit for measuring aircraft noise) are presented to provide an understanding of the fundamentals of …
Employee Attitude Invariance: A Guide For Personnel Practitioners, Robert A. Cohen
Employee Attitude Invariance: A Guide For Personnel Practitioners, Robert A. Cohen
Retrospective Theses and Dissertations
No abstract provided.
Treatment Process Variations To Reduce Tthm Residuals In A Finished Water, Edward L. Hatcher
Treatment Process Variations To Reduce Tthm Residuals In A Finished Water, Edward L. Hatcher
Retrospective Theses and Dissertations
This research investigates organic polymers, inorganic coagulants and separate unit operations for their effect on the total tri-halogenated (TTHM) residuals in a finished water. The water samples utilized for this project were taken from a highly colored Central Florida potable water supply which is used by municipality which has a TTHM concentration in the finished water in excess of the proposed Federal limit. Results indicate that (1) organic polymers are not a significant source of THM precursors, (2) organic polymers, when used as a settling aid after coagulation in Jar tests, are an effective means of filtration for removing THM …
Software Quality Assurance, Edward C. Soistman
Software Quality Assurance, Edward C. Soistman
Retrospective Theses and Dissertations
The problems associated with software development and use are investigated from a management point of view. Having identified the critical aspects of effective software management, an approach is suggested for the creation and implementation of a software quality assurance program, Particular attention is focused on the concept of Life Cycle Procurement as currently utilized by the Department of Defense. The research was accomplished in two phases. The first consisted of an extensive literature search, seminar attendance and participation in several working groups assigned the responsibility for establishing software quality assurance guidelines. The second phase involved direct participation in the development …
An Introduction To The Winograd Discrete Fourier Transform, Janice S. Agnello
An Introduction To The Winograd Discrete Fourier Transform, Janice S. Agnello
Retrospective Theses and Dissertations
This paper illustrates Winograd's approach to computing the Discrete Fourier Transform (DFT). This new approach changes the DFT into a cyclic convolution of 2 sequences, and illustrates shortcuts for computing this cyclic convolution. This method is known to reduce the number of multiplies required to about 20% less than the number of multiplies used by the techniques of the Fast Fourier Transform. Three approaches are discussed, one for prime numbers, one for products of primes, and lastly one for powers of odd primes. For powers of 2 Winograd's algorithm is, in general, inefficient and best if it is not used. …
Critical Exposure Pathways: An Analysis Of The Environmental Impact Of Gaseous Effluents From Light-Water-Cooled Reactors, Robert Danna
Critical Exposure Pathways: An Analysis Of The Environmental Impact Of Gaseous Effluents From Light-Water-Cooled Reactors, Robert Danna
Retrospective Theses and Dissertations
The analysis of the environmental impact of routine radioactive gaseous releases from operating nuclear power stations is discussed using a radiation dose assessment. This analysis includes a discussion of the origin of radionuclide effluents, a discussion of federal policies, and a calculation of radiation doses to man. A model of estimating the radioactive dose from gaseous effluents from light-water-cooled reactors is described using guidelines described in the Code of Federal Regulations and the Nuclear Regulatory Commission's Regulatory Guides. The environmental impact of these sources is then analyzed using dose rates calculated along critical exposure pathways for various radioactive nuclides. Examples …
A Co-Op Advertising Information System, Kay C. Gardner
A Co-Op Advertising Information System, Kay C. Gardner
Retrospective Theses and Dissertations
This report presents the development of a business information system for co-op advertising. An underlying assumption is that information systems add value to an organization. It is an application of data bank theory, and demonstrates the techniques required to maintain a current information system, i.e., add, change, and delete capabilities. The master file is sequentially accessed to produce reports by participation percentage, classification, or expiration date.
Scrubber Design For Phosphoric Acid Production Facility, Edward E. Mayer
Scrubber Design For Phosphoric Acid Production Facility, Edward E. Mayer
Retrospective Theses and Dissertations
This report is an examination of the practical design of a phosphoric acid production facility wet scrubber. It includes a brief background of the Florida Phosphate Industry, in addition to the rules and regulations affecting the emission of fluoride contaminates. The theoretical aspects of a packed absorption tower is discussed prior to the actual design of a cross-flow wet scrubber of the type typically found in the Florida Phosphate Industry.
Coupling Efficiency And Alignment Sensitivity Of Single Mode Optical Fibers, James Mathew Martin
Coupling Efficiency And Alignment Sensitivity Of Single Mode Optical Fibers, James Mathew Martin
Retrospective Theses and Dissertations
Coupling efficiency an alignment sensitivity models for the coupling of light from a fundamental mode Gaussian light beam into a single mode optical fiber are given. Experimental results are presented which verify the coupling and misalignment predictions of the models. Data were taken at two wavelengths: 0.6328 and 0.8460 micrometers. The light sources were a HeNe laser and a GaAlAs laser respectively. Coupling efficiencies were measured versus beam spot size; and lateral, axial and angular misalignments of the beam and fiber axes.
A Computer Program For Analyzing Moist Air In Fin And Tube Crossflow Heat Exchangers, Robert F. Stricker
A Computer Program For Analyzing Moist Air In Fin And Tube Crossflow Heat Exchangers, Robert F. Stricker
Retrospective Theses and Dissertations
A computer model of a fin and tube air-to-air heat exchanger is presented. The model incorporates a computational scheme to account for latent effects due to small amounts of moisture in one or both fluid streams. A testing program is described which was performed in order to mathematically characterize the heat transfer and pressure drop relationships of the tube with turbulator used in the heat exchanger. These relationships are included in the computer model. A comparison of the computer model to heat exchanger test data indicates that the computer model may be relied upon to provide design and analysis information. …
Optimization Of Stormwater Management Practices And Processes, Mark Michael Calabrese
Optimization Of Stormwater Management Practices And Processes, Mark Michael Calabrese
Retrospective Theses and Dissertations
In recent years, stormwater has been found to be a major source of pollution to receiving waters. Major research efforts have been directed in this area, primarily as a result of the Federal Water Pollution Control Act and Public law 92-500, the 1972 Amendments to the act. Yet, a need remains for more data in the field of stormwater management. Such needs include cost-performance data and planning methodologies to optimally select best management practices (BMP's). The research culminating in this report addresses these needs. A computer program, "MANAGE", has been written to generate cost/efficiency curves, and uses these curves to …
Heavy Metals In The Water And Wastewater Systems Of The University Of Central Florida, William Keith Mccully
Heavy Metals In The Water And Wastewater Systems Of The University Of Central Florida, William Keith Mccully
Retrospective Theses and Dissertations
In large enough quantities, heavy metals may be detrimental to human health. Metals in raw water may pass through a water treatment plant without being completely removed. Once in a the distribution system, the water may experience metal pick-up due to corrosion. During the course of this study, an attempt was made to determine the heavy metal concentrations in the University of Central Florida's potable water systems. Samples were fun on the plasma spectrophotometer, Spectraspan III, and analyzed for heavy metal content. The results indicate pick-up of Fe, Al, Cu, and Zn in the distribution system. The arsenic and lead …
A Heuristic Approach For The Scheduling Of Technical Training Courses In The U.S. Navy, William H. Lindahl
A Heuristic Approach For The Scheduling Of Technical Training Courses In The U.S. Navy, William H. Lindahl
Retrospective Theses and Dissertations
The generation and maintenance of feasible schedules for Navy training courses are labor intensive throughout the Naval Education and Training Command. The major constraints affecting this scheduling are planned input requirements and the suitability/availability of instructors, equipment, and facilities. An additional constraint is that schedules must be established for the current year, updated and revised as necessary, and projected for the out-year planning requirements of the 5-Year Defense Plan. This thesis documents the essential components of scheduling for training at a representative training center, the Fleet Anti-Submarine Warfare Training Center, Pacific. It provides details for the automation of the current …
An Application Of A Single Chip Slave Microcomputer As An Intelligent Interface, Thomas J. Riordan
An Application Of A Single Chip Slave Microcomputer As An Intelligent Interface, Thomas J. Riordan
Retrospective Theses and Dissertations
This thesis describes the operation of an intelligent controller existing between a computer system and a peripheral. The intelligent controller is implemented with an INTEL universal peripheral interface, UPI-41, single chip slave microcomputer. The interfaces between the controller and the computer system, and the controller and the peripheral are described in detail, as are the firmware and internal facilities of the controller itself. An evaluation of system operation is presented and, finally, the organizational philosophy of the system is discussed. Located within the appendices are a system schematic and listing of the controller program.
Environmental Aspects Of The Nuclear Fuel Cycle And High-Level Radioactive Waste Disposal, Robert S. Kent
Environmental Aspects Of The Nuclear Fuel Cycle And High-Level Radioactive Waste Disposal, Robert S. Kent
Retrospective Theses and Dissertations
An assessment of the environmental effects of the nuclear fuel cycle industries is discussed, reactor waste inventory and standards are presented, and the alternatives for high-level radioactive waste disposal reviewed, with particular attention being given to disposal in deep geological formations on land. One of the major concerns regarding potential impacts of the nuclear fuel cycle industries is the lack of a definite and proven method of disposal of the high-level radioactive wastes from light water moderated reactors. The problem is expected to become more pressing as the nuclear power industry and the associated radioactive waste inventories grow in the …
Microcomputers: An Alternative For Digital Controllers, Richard Brooke Wavell
Microcomputers: An Alternative For Digital Controllers, Richard Brooke Wavell
Retrospective Theses and Dissertations
Two candidate microprocessors are selected to demonstrate that microprocessors can be effectively utilized in digital control applications. The Intel 8085A-2 is selected to represent 8-bit microprocessors and the Intel 8086 is selected to represent 16-bit. A baseline second order digital filter algorithm is developed for comparison of the performance of the two microprocessors for both software and hardware multiply implementations. Emulation techniques are utilized to facilitate performance comparison, without large investments in software and hardware development. In addition, they provide a method for evaluating new microprocessors, before hardware becomes available. The emulations are then used to verify and to determine …
Validation Of A Transient Simulation Program (Trnsys), Brian F. Goldiez
Validation Of A Transient Simulation Program (Trnsys), Brian F. Goldiez
Retrospective Theses and Dissertations
Although a Transient Simulation Program (TRNSYS) has become a widely used model for simulating a solar energy system, there has not been extensive work done in validating this model with actual data. The approach used to validate this model consisted of a modular buildup of components with validation for each module. Extreme care was taken in choosing the necessary parameters to model each component. Where parameters were not given, they were either derived or reasonable values were selected based upon general conditions prevailing in Central Florida or conditions which are generally true for certain solar hot water systems. The intent …
Elimination Of Nematodes From The Soil By Microwave And Dry Heat, Behrouz Abbassi
Elimination Of Nematodes From The Soil By Microwave And Dry Heat, Behrouz Abbassi
Retrospective Theses and Dissertations
No abstract provided.
Wastewater Pretreatment System For A Printed Circuit Board Plant, Raymond F. Green
Wastewater Pretreatment System For A Printed Circuit Board Plant, Raymond F. Green
Retrospective Theses and Dissertations
The wastewater from the electroplating processes required for the production of printed circuit boards has a high heavy metal content. The regulatory agencies of both the Federal Government and the State of Florida set pretreatment limitations on the quantity of the hazardous heavy metal ions that may be discharged t o a receiving body of water or to a Publicly Owned Treatment Works. A number of treatment processes are available for the effective removal of these pollutants. The mechanism behind the more common processes are discussed in this paper. Many variables must be considered in the design of a wastewater …