Engineering Commons^™

Data Acquisition And Analysis Routines For Laser Propagation Experiments, Steven M. Burke

Retrospective Theses and Dissertations

Processing and analysis routines giving normalized moments of optical intensity, structure functions of wind velocity and temperature, central moments, and various measures of the turbulence parameter, C²_N, are presented. Rapid analog-to-digital data conversion and storage to implement this analysis using MINC 11/23 with RT11 operating system are discussed. Coding for file organization and implementation of processing routines on the VAX 11/750, VMS operating system are also discussed.

Metal Leaching Characteristics Of Three Synthetically Generated Metal Finishing Sludges, Christopher M. Cherniak

Retrospective Theses and Dissertations

A study was performed involving the leaching characteristics of three synthetically-generated metal finishing sludges. Three precipitates (one hydroxide, two sulfide-based) containing varying concentrations of cadmium, copper, lead, nickel and zinc were dewatered and subjected to an EPA-regulated limits. The sludge generated from an insoluble sulfide process exhibited the fewest parameters in violation (two), while the soluble sulfide sludge had one metal in compliance and the hydroxide sludge had none. On a metal-by-metal basis, the lead and copper exhibited the greatest capacity to withstand resolubilization in a low pH (5) environment. Nickel and zinc were present at the highest leachate concentrations …

An Automated System For University Placement Center Interview Scheduling And Database Management, John C. Debo

Retrospective Theses and Dissertations

As the University of Central Florida grows, the number of students using the placement center increases and the number of prospective employers conducting interviews also increases rapidly. The present system for scheduling interviews and maintaining records on students and employers is time and paperwork intensive, and is falling behind the load.

The system described in this paper is designed to do most of the interaction with students seeking interviews to aid the staff in scheduling the employers' interviewing days, and to do most of the record keeping of eligible students and prospective employers.

The several program modules are written in …

Fast-Flyback Mirror Scanner, Raymond E. Hanna

Retrospective Theses and Dissertations

The system analysis and computer simulation for a fast-flyback mirror scanning system is presented. Mirror dynamic equations are developed to define the torque requirements for the drive motor. Electromechanical modeling and Laplace transforms are formulated to develop system equations for computer simulation. From the computer simulation, the servo performance parameters are selected for the servo loop to complete the design.

An Evaluation Of Wheelchair Restraint Systems Used In The Transportation Of Disabled Persons, Robin L. Drespel

Retrospective Theses and Dissertations

There has been a significant effort to provide disabled persons with increased independence and mobility. The federal government requires that transportation facilities be made accessible to the disabled, and the number of handicapped persons using these facilities is expected to increase significantly in the future. Restraint systems have been required for passenger cars since the 1960s, and considerable effort has been dedicated to increasing public awareness of the benefits of seat belt usage. Little effort has been devoted to the development of restraint systems for individuals who must use wheelchairs as vehicle seats. A survey was conducted in the Central …

Sampling Rate Conversion As Applied To Speech, Terry E. Tanzey

Retrospective Theses and Dissertations

There are several different ways to perform sampling rate conversion. Two methods for sampling rate conversion are discussed in this paper. The first is the interpolator method (ideal) which uses the interpolation formula. The word “ideal” is used in the sense that given other forms of interpolation, the most accurate results are achieved by using the interpolation formula. Given samples of bandlimited analog signal taken at a rate at least twice the Nyquist frequency, it is possible to reconstruct the original analog signal by using the interpolation formula. The second is the traditional way of sampling rate conversion, which is …

New Non-Linear Fm Pulse-Compression Technique For Radar Applications, Ronald A. Booher

Retrospective Theses and Dissertations

The development of pulsed type radar signals is examined, with a brief review of matched filtering. Gated RF, linear and non-linear FM pulse-compression (chirp) and matched filtering of radar signals is reviewed in depth. Emphasis is given to identifying the desirable characteristics of each method. A new method of non-linear FM pulse-compression is introduced; it utilizes the Eigen Function (a form of the raised-cosine family) of functions) as its modulating term. Its properties are then compared to those of the linear and non-linear systems reviewed in the preceding sections. Design considerations for implementation on a surface acoustic wave device are …

A Logic Simulator Interface, John D. Lofgren

Retrospective Theses and Dissertations

A software interface between a firmware documentation system and a logic simulator named TEGAS-5¹ is described. The interface accepts PALASM² inputs for PAL files. The output is an ASCII file which defines the firmware parts in TEGAS-5 format. Modules are written in FORTRAN and command routines are written in DCL on VAX 11/780 machines. No system calls are required, so portability is maintained. Limitations include the inability to load two different programs in identical firmware parts on the same design, but this can be overcome.

¹GE/Calma Corporation trademark

²MMI Corporation trademark

Optimum Input Impedance For An Electro-Oculometer, Robert A. Solomon

Retrospective Theses and Dissertations

No abstract provided.

A High Level Programming Language And Compiler For The Heathkit Et-18 Hero Robot, Daniel. Fischoff

Retrospective Theses and Dissertations

Robots are being used extensively i• n industry to increase the productivity and flexibility of manufacturing operations. Personnel must be trained to operate industrial robots safely and effectively. Many educational robotic systems have been developed, but these devices usually lack the high level programming language capabilities found on modern industrial robots. The Heathkit Hero Robot is an educational robotic system. A high level language was developed for the robot to make the Hero a more effective educational device. The high level language and compiler operate on an IBM Personal Computer, allowing robot programs to be written offline without interrupting the …

The Application Of Value Analysis Techniques To Service Organizations, David M. Richardson

Retrospective Theses and Dissertations

This research involves review of value analysis and value engineering techniques and application of these techniques to a service organization. Application of value analysis techniques to service organizations required some modification due to the amount of labor intensive, manual operations typical of many service industries. The modified value analysis methodology was applied to a fueling operation performed by Kennedy Space Center as part of their space shuttle operations. The successful application of this technique illustrated that value analysis methodology can be applied to service organizations with slight modifications.

A Computer Program To Design Reinforcement For Concrete Beams Subjected To Torsion, James E. Schwarz

Retrospective Theses and Dissertations

A concrete beam is rarely subjected to pure torsion loading. However, in many design applications a beam is subjected to torsional loads in addition to bending and shear loading. The American Concrete Institute has developed a specification for the design of beams subjected to torsion. These specifications are found in ACI 318-83. In this research report, a computer program is presented, using these specifications, which will aid engineers in the design of reinforcement for concrete beams subjected to torsional loading. The provisions of the ACI 318-83 specification and their implementation into the computer program are presented. A sample problem is …

Data Compilation And Statistical Analysis Of Bachelor Of Science In Engineering Graduates At The University Of Central Florida, June A. Hagerty

Retrospective Theses and Dissertations

The College of Engineering at the University of Central Florida (UCF) required a data set containing the Bachelor of Science in Engineering (BSE) graduates from 1970 on, to be updated each semester. The data set was created in 1984, through the use of the Statistical Analysis System/Full-Screen Product (SAS/FSP), a computer system which allows for easy access to and editing of data values, and the use of SAS programming for statistical analysis of the data set. The data set presently (1985) contains 1483 observations each with 70 variables, such as personal information (age, social security number, ethnic origin), degree information …

The Effects Of Magnetic Flux On Suspended Particles In Seawater, Mohammed A. Nehme

Retrospective Theses and Dissertations

A study was conducted to investigate the effect of magnetic devices on the precipitates in a condenser’s tubes when seawater is used as cooling water. This test was necessary to evaluate these devices as possible replacements for conventional methods of water treatment. In the test program, a small condenser was operated with conditions similar to utility condensers. This condenser was modified to include twelve tubes. The inlet water box was divided to provide for two parallel magnetic water treatment streams, and one control untreated water stream for comparison purposes. With and without the use of a magnetic device, the chemical …

Fiber Optic Temperature Sensors For A Large Electric Power Generator, Daniel A. Lester

Retrospective Theses and Dissertations

Fiber optic temperature sensors are excellent candidates for monitoring the temperature along the stator windings of a large electric power generator. Unlike thermocouple thermometers, they are immune to the effects of strong magnetic fields which are present in all power generators. Several different point and line sensors have been evaluated in their ability to resolve temperature and temperature distribution (respectively), as well as their compatibility with the generator environment. The sensor must function inside the generator for long periods of time (up to 25 years) without benefit of recalibration. This constraint has required us to devise methods by which the …

Multi-Computer Communication With Shared Memory, Jane N. Chang

Retrospective Theses and Dissertations

This thesis describes a design for a multi-computer communication system using a shared memory. The design is implemented using the Motorola EXORset 30/DS35 development systems. The primary use for the shared memory is to act as a message center similar to a mailbox, where each computer can leave messages for other computers and also pick up messages from other computers. Status word residing in shared memory, called semaphore, are used to indicate the condition of the mailbox. Each computer polls unique semaphores associated with unique message transfers when requesting to send a message or to receive a message.

Uhf Frequency Synthesizer, Christopher W. Shenefelt

Retrospective Theses and Dissertations

This thesis describes the design, implementation and testing of a UHF frequency synthesizer. The synthesizer is designed to provide a sine wave output programmable from 400 MHz to 500 MHz in 0.1 MHz increments. The synthesis technique utilized is Digital Coherent Indirect Synthesis. This technique uses phase locking to provide a range of stable output frequencies all derived from a single crystal reference. Component design and system level analysis are presented in detail.

Using N.2 To Model A Microprocessor System, Benjamin J. Patz

Retrospective Theses and Dissertations

Due to the complexity of designing digital systems using VLSI parts, a tool for aiding in system level design specification and verification is needed. Functional level modeling languages and simulators provide that tool. An example of such a tool is the N.2 package of software produced by Endot Inc. and soon to be running on a VAX computer at the University of Central Florida. An overview of the N.2 system is presented in this paper with emphasis on the modeling language of N.2, ISP’. A Small Instruction set Computer (SIC), originally specified in HAPL, is designed with this software using …

The Quantity Of Stormwater Entering The Drainage Wells Of Orlando, Florida, James M. Mcbee

Retrospective Theses and Dissertations

An extensive literature survey revealed there have been no in-depth studies of the quantity of water entering Orlando area drainage wells. Previous values ranging from 30 to 85 MGD were based on water supply withdrawal information or gross drainage area estimates. This paper presents a detailed study of the quantity of water entering 208 drainage wells in the Orlando Ubran Stormwater Management Manual (OUSWMM) area. Extrapolation of results to the remaining wells in Orange County is discussed briefly. Field experiments on one 20 in drainage well yielded a mathematical relationship that was reasonable for estimating acceptance rates for drainage wells …

A Case Study Of The Management Of New Packaging Technologies, Richard Kirk Maguire

Masters Theses

"There has been a growing interest by industry in the functions of packaging management as packaging is being recognized as a greater factor in the overall success of a company.

This is a case study on the packaging management structure of one company and how the introduction of new packaging technology is handled by that company. The case study follows the history of the packaging department of the company and examines the current structure of the department. The study goes on to analyze the department's methods for handling old and new technologies and the reasons for doing so. A closer …

Complex Reactions In Porous Media, Dar-Sen Horng

Masters Theses

"The dusty-gas model is used to describe the molar fluxes of complex irreversible reactions with moles changes in isothermal porous catalysts.

The model presented in this work can be used for any number of independent reactions occurring in porous media as long as the number of independent reactions is equal to or less than the total number of species.

Systems of two parallel reactions involving a ternary mixture is used in this work. Five sets of reaction parameters are used for each reaction system and the overall selectivity and effectiveness factors are calculated for different geometric constants.

Results show that …

Stress And Stress Management Among Geoscientists In The U.S. Petroleum Industry, August 1984: An Analysis, Ann M. Hagni

Masters Theses

"For the past three years, employment in the petroleum industry has declined significantly. This, along with many other factors, has created a potentially stressful situation similar to the petroleum industry recession of the late 1950s. A four page "Stress Questionnaire" mailed to 1000 geoscientists in the U.S. petroleum industry in August, 1984, concludes that geoscientists appear to be coping very well with their potentially stressful situation.

These geoscientists rated themselves considerably up-to-date with respect to their professional discipline and show a strong need to grow and develop. They are very personally involved in their work and at least some of …

Evaluation Of Percolation Ponds For Design And Operation, David A. Baar

Retrospective Theses and Dissertations

Land application of domestic wastewater effluent by rapid rate infiltration (i.e., percolation ponds) is a very successful and cost-effective method for wastewater management. Municipal percolation pond systems have been successfully operated in the United States for about 100 years. The disposal concept depends on a relatively high rate of secondary wastewater effluent infiltration into the soil by rapid percolation, either vertically or horizontally, away from the application surface area. This study was accomplished to determine infiltration rates at two working percolation pond systems and the variability of these rates, to compare the operating results with the initial design, and to …

Design Of A Gold Code Generator For Use In Code Division Multiple Access Communication System, Mark W. Young

Retrospective Theses and Dissertations

A Gold code sequence generator suitable for use in a code division multiple access spread spectrum communication application is designed. A dual, single return shift register configuration is used to generate Gold code sequences. The code sequences are generated by the mod-2 addition of two linear maximal length pseudo-random noise codes, each of which corresponds to a sixth-order primitive polynomial. A computer model of the design is used to generate all 65 possible members of the Gold code sequence family. A tabulation of all sequences and their initial condition “keys” is provided, along with a designation as to which code …

Dipstk-A Process Control Language, Charles C. Strange

Retrospective Theses and Dissertations

Process control languages are generally complex and machine-oriented. Their use requires a high degree of skill, not only in process control knowledge, but also in the programming. On one extreme, control programs are written in assembler language. This is a time-consuming process and the high investment is tailored to a specific application. The resulting programs are difficult to communicate between the programmer and the user. On the other extreme, recent attempts have used high-level languages, i.e., FORTRAN, but these still require assembly-level supplements. In general, only the programmers know what the program does. Thus, a void exists between the programmer …

A Survey Of Microcomputers In Training Devices, Kenneth P. Kelly

Retrospective Theses and Dissertations

This report surveys the use of microcomputers in existing and emerging training devices, with an emphasis on military training devices. Other major purposes of this report are to familiarize the training device designer with the capabilities of the microcomputer and present the designer with the set of issues to consider in determining if a microcomputer could be used in his particular trainer. After providing a description of training devices, this study addresses the definition and capabilities of current microcomputers. Current applications of training devices that utilize both single and multiple, or distributed, microprocessors are given. Next, an overview of the …

Visual Observations Of An Air-Water Mixture Flowing Through A Tube Support Plate With Circular-Hole And Trefoil-Hole Designs, Gary W. Caille

Retrospective Theses and Dissertations

The flow patterns of an air-water mixture at atmospheric pressure were visually observed through a simulated vertical steam generator tube support plate of circular hole and trefoil designs. Flow oscillations with a period on the order of 0.4 seconds were observed in both support plates at similar mass flow rate combinations. The oscillation consisted of a period of rapid surging followed by a low flow or stagnation period on the order of 0.1 seconds. Reverse (downward) flow was also observed for part of the oscillation cycle in the trefoil support plate. The flow oscillations that exist in one tube support …

An Interactive Training Device Using A Laser Video Disc, Mary C. Bertrand

Retrospective Theses and Dissertations

The goal of this paper is to develop an interactive training system. Although the system developed was used to train tank gunners, the system concepts are generic in that they can be applied to many training scenarios. Applications of computer-based training systems are briefly discussed. The system concepts are defined and hardware and software subsystems are outlined. An architectural overview will precede a detailed discussion of subsystems.

Transient Flow Inverse Study Calculation Of Unsaturated Permeability Of Wood, Farid Piroozmandi

Dissertations and Theses

One of the major processes in lumber industry is wood drying. This process consumes large amounts of energy and capital, and due to the length of time it takes, it acts as a governing factor in lumber production levels. Development of improvements in processes and equipment used in wood drying can be expedited through computer simulation of various drying procedures. These numerical simulations depend on the accuracy of numerical models representing wood transport properties, including functional dependency of liquid permeability through wood with respect to local saturation level. Data available in the literature mainly represent wood permeability properties at fully …

Ipcl1- An Interactive Process Control Language, Richard A. Erlandson

Retrospective Theses and Dissertations

This report documents a Process Control Language. It was written to provide an easy-to-use, user-friendly language to control a manufacturing-type process. It is not assumed the user is proficient or even familiar with any computer languages. The user should be able to grasp the simple set of commands available and begin writing user programs in a short period of time. Emphasis has been placed on error messages to inform the user of the type of error and enough information to correct it. The language was written in PDP-11 assembly language and run on a 11/34 computer in the Microcomputer Laboratory …