Digital Commons Network^™

Motion And Intrusion Detection Using A Pyroelectric Detector, Randy R. Fields

Retrospective Theses and Dissertations

The purpose of this paper is to describe a device that passively detects the presence of a warm-bodied object in a specified area. The detecting device used is a pyroelectric detector with an integral optical filter. By focusing infrared radiation generated by the object onto the detector, the resulting temperature change is converted to a voltage and then amplified. Modulation of the incoming radiation is accomplished by a rotating disk whose speed of rotation is dynamically controlled by a microprocessor. The resulting detector response is filtered and converted to a DC level. The signal is then passed through an analog-to-digital …

Amplification Of Video Signal Conditioner Circuit Design, Phuoc K. Nguyen

Retrospective Theses and Dissertations

Charge Injection Device (CID) has recently become a popular imaging device due to its versatility and high performance. The UCF's Electro-Optics Laboratory currently uses the TN 2505A, a General Electric solid state CID surveillance camera as an imager in an image processing system. The model offers two useful amplification techniques for video signal under low light condition: electronic gain boost and extended integration. This report describes the design and implementation of an external interface circuit that enables utilization of these two amplification techniques on the TN 2505A.

Selected Client Characteristics And Their Relationship To Successful Outcome In A Vocational Rehabilitation Program, Helen Harmon

Retrospective Theses and Dissertations

Vocational Rehabilitation (VR) had its beginning in 1918, when Congress granted to the Federal Board of Vocational Education the power to provide for the training of "any disabled veteran who was unable to carry on a gainful occupation, to resume his former occupation, or to enter upon some other occupation, or having resumed or entered upon such occupation was unable to continue the same successfully." (U.S. Department of Health, Education, and Welfare, 1972). Called the Soldiers Rehabilitation Act, this measure made clear the basic goals of vocational rehabilitation. In 1943, a milestone year, services were extended to all disabled individuals …

Operations Research In The High Tech Military Environment: A Survey, C. Steven Griffin

Retrospective Theses and Dissertations

The use of operations research as a technology to solve many of the problems of government and industry has become a major field of study within the very short span of the last fifty years. In the paper entitled, "Operations Research in the High Tech Military Environment: A Survey," the reader is provided with a better understanding of the tenets of operations research through an examination of a representative sample of the latest operations research applications developed for the high tech environment.

Initially, this involves providing the reader with some fundamental insights into what operations research is, what its practitioners …

Treatment Of Chronic Nightmares Using Progressive Relaxation Training, Jennifer R. Trefonas

Retrospective Theses and Dissertations

This study investigated the effects of progressive muscle relatxation on the frequency of, and the anxiety associated with, chronic nightmares. Three females diagnosed as suffering from an anxiety disorder and who experienced at least two nightmares per week served as subjects. Treatments consisted of practicing progressive relaxation trainig twice daily with the assistance of a tape-recorded exercise. The first practice occurred prior to 3:00 p.m. and the second practice occurred before retiring at night. Subjects recorded nightmare frequency, intensity, and theme on the Daily Nightmare Questionnaire (DNQ). In addition, nightmare-associated anxiety was measured daily with the State Trait Anxiety Inventory …

Dairy Calcium Advertising Awareness, Attitudes, And Behavior: A Survey Of 13-17 Year Old Females, Michele Cooper

Retrospective Theses and Dissertations

No abstract provided.

Implementation Of A 35 Ghz Microstrip Antenna System, Rachel S. Albritton

Retrospective Theses and Dissertations

Millimeter waves, corresponding to the frequency range 30 to 300 GHz, have characteristics which make them ideal for many applications. Antennas at these frequencies have the advantage of reduced size and weight and can be fabricated as an integral part of the system they are used in. Millimeter wave microstrip antennas have been extensively researched over the past decade. The purposed of this report was to build and test 35 GHz microstrip antennas as well as put into operation a high voltage klystron power supply, Micro-Now Model 756. The antennas were fabricated and tested in the lab and the results …

The Relationship Between Selected Personality Variables And Compulsive Gamblers In Treatment, Kevin E. Kip

Retrospective Theses and Dissertations

The empirical contributions of researchers on the personality characteristics associated with the identification and treatment of compulsive gambling have been largely piecemeal. As an active four year veteran of the Gamblers Anonymous program, the author has come to recognize that the vast majority of members comprising Gamblers Anonymous are persons typically not well versed in experimental design or research methodology techniques. Compounding this statement is the fact that it was not until the early 1980's that compulsive gambling (or synonomously stated as pathological gambling) became recognized by the American Psychiatric Association as a mental disorder with explicit diagnostic signs and …

Implementation Of A Parallel Ynet Architecture, Julie Nadeau Leblanc

Retrospective Theses and Dissertations

A simulation of an alternate implementation of a redundant busing network based on the Teradata Ynet architecture is presented. An overview of the Teradata DBC/1012 data base parallel processing computer including the Ynet, an active logic busing network, is given. Other multiprocessor busing networks are examined and compared to the standard Ynet and the alternate Ynet.

In the standard Ynet system, two networks, called Ynets, process message packets concurrently. When one of the Ynet paths fails, the system is reset. The remaining Ynet path restarts using the previously interrupted packets and processing continues without the aid of the failed Ynet. …

The Use Of A Portable Microcomputer As A Data Collection Tool To Support Integrated Simulation Support Environments: A Concept, James E. Wilkinson

Retrospective Theses and Dissertations

Advances in simulation methodology, and the computer support systems to implement these methodologies, have led to the development of integrated simulation support environments. These environments, or collection of software tools, seek to aid the analyst in developing models, data management and analysis, and data presentation.

While an integrated simulation environment provides a more organized structure for managing and performing simulation projects, and provides a database management structure for storing, manipulating, and analyzing data, they do not address the actual process of going out and obtaining the data. As a result, many of the common problems associated with poor problem and …

Inhibition Of Murine Lymphokine Activated Killer (Lak) Cell Cytotoxicity By Adherent Cells And Prostaglandin E2, Kimberly G. Roe

Retrospective Theses and Dissertations

The effect of adherent cells, prostaglandin E₂ (PGE₂), and indomethacin on LAK cell activity of C57BL/6J (B6) mice was investigated. Depletion of adherent cells from splenocyte cultures prior to LAK cell generation increased LAK cell cytotoxicity by 60% compared to non-depleted splenocyte cultures. Depletion of adherent cells from splenocyte cultures following five days of incubation and prior to the LAK cell assay resulted in a similar enhancement. Indomethacin, an inhibitor of prostaglandin synthesis, enhanced LAK cell cytotoxicity in splenocyte cultures. PGE₂ inhibited LAK cell cytotoxicity of adherent cell depleted splenocytes 28% and 88% at l0^{-6 …}

T Cell Subset Analysis In The C57bl/6j Mouse, Bonny Bass

Retrospective Theses and Dissertations

Functional studies of murine T cells were performed to verify the role of T cells and adherent cells in the production of IL-2 and to clarify the role of the L3T4 receptor. Whole spleen cells were passed over nylon wool columns to obtain purified populations of cells for this purpose. It was found upon reconstitution of the T cells and adherent cells that a collaboration between the two was necessary for optimal IL-2 production. Their level of IL-2 production increased above the amount produced by the whole spleen cells. Antibody mediated cytotoxicity using L3T4 antisera identified T helper cells exclusively. …

Death Anxiety Among Older Adults As A Function Of The Christian Faith With Specific Reference To The Experience Of Being "Born Again", Wendy E. Holland

Retrospective Theses and Dissertations

Sixty male and female subjects between the ages of 60 to 84 years were administered three questionnaires concerning death anxiety, religiosity, and life satisfaction. Data were collected and analyzed by Pearson r correlation as well as by multiple regression analysis.

Findings included those subjects considering themselves to be "born again" Christians scored significantly lower on the death anxiety scale than did those respondents considering themselves Christian, but not "born again." Subjects considering themselves to be non-Christian/Other did not correlate significantly with death anxiety. Life satisfaction was not a significant predictor of death anxiety. Subjects indicating more conservative/fundamentalist denominational affiliations indicated …

Capacity Planning In A Discrete Item Manufacturing Environment, Ali M. Alsebaiee

Retrospective Theses and Dissertations

Capacity planning is a medium-to-long- term production planning tool that enables management to better understand how the demand of its customers have and will affect the available capacity planning. For a successful production and planning control system, management needs to consider the availability of not only the materials and component, but also the required manufacturing capacity. Several capacity planning techniques that deal with capacity planning in a discrete item manufacturing (job shop environment) are discussed in this report. These are Resource Requirement Planning, Rough Cut Capacity Planning, Capacity Requirement Planning, Operation Sequence, Input Output, and Simulation. A computerized capacity planning …

Analysis Of Flexible Pavement On The Basis Of Deflection Basins, Dinesh M. Kamath

Retrospective Theses and Dissertations

The pavement at research park called Research Parkway and Discovery Drive was found Deteriorated within two years of the construction. The need to evaluate the extent of the damage and the estimate of remaining life of pavement initiate the research study. The analysis presented in this report is based on the measurements of the surface deflections and the layered elastic theory. The life expectancy of the pavement can be estimated by the amount of pavement deflection developed within the pavement system. The parameters used in the analysis are the applied load, material of the pavement components and environmental effects. Trial …

Effect Of Non-Ideal Sampling On The Discrete Fourier Transforms Of An Object Function, Karen Marie Macdougall

Retrospective Theses and Dissertations

Fourier Series and Fourier Transforms can be used to determine the frequency content of a continuous signal. This paper investigates the situation where a two dimensional object function is sampled by a detector array of a finite size. Continuous Fourier analysis is not applicable to sampled data, so the Discrete Fourier Transform is used. The similarities and differences between the discrete and continuous cases are discussed and consideration is made as to how the spectrum is altered when the normal assumptions of ideal sampling and recovery are not made.

Investigation Of Electrical Properties Of Earth Materials By Ground Penetrating Radar, Bishar S. Tannous

Retrospective Theses and Dissertations

Research was conducted at the University of Central Florida between September 1983 and July 1985 utilizing Ground Penetrating Radar (GPR) to determine values of dielectric constants of common earth materials and to establish a correlation between the dielectric constant of a material and its moisture content. GPR was also used on a concrete pavement to determine the dielectric constant of a concrete mix and to explore the possibilities of evaluating a concrete pavement by detecting embedded anomalies.

The earth materials selected for the purpose of this research were sandy soils, clayey soils and limestone aggregates. A model PVC tank supported …

Speech Signal Representation Through Digital Signal Processing Techniques, Debbie A. Kravchuk

Retrospective Theses and Dissertations

This paper addresses several different signal processing methods for representing speech signals. Some of the techniques that are discussed include time domain coding which uses pulse-code, differential, or delta modulating methods. Also presented are frequency domain techniques such as sub-band coding and adaptive transform coding. In addition, this paper will discuss representing speech signals through source coding techniques via vocoders. A comparison of these different signal representation methods is included.

Design And Analysis Of A Voice Band Qpsk Modem, John F. Doud

Retrospective Theses and Dissertations

The objective of this paper is to design and construct a modem using the Quadrature Phase Shift Key digital modulation technique. The modem is designed to transmit information over a telephone line at the rate of 1200 bits per second subject to noise and imperfect channel response in the form of magnitude and delay distortion. The device is constructed using CMOS logic to minimize power consumption. To analyze the design with respect to the above constraints, it was necessary to build a pseudorandom bit sequence generator and correlator, a variable magnitude white noise generator and a digital error detector/indicator.

Electrical Testing Of Piezoelectric Transducers Applied To Accelerometer Design, Patrick L. Heron

Retrospective Theses and Dissertations

Piezoelectric transducers are, by nature, electromechanical devices. Methods historically used to characterize these transducers involve both electrical and mechanical measurements. The purpose of this paper is to propose a technique to characterize piezoids which will require electrical measurements only. Thus, characterization can be accomplished through the use of readily available calibrated electrical test equipment. This technique is based upon the assumption that some insight into the dynamic behavior of a piezoid can be implied by inspection of the transducer's static material properties. A necessary condition for the validity of the proposed technique is established. This test procedure is utilized in …

Value Of Group Study Participation For Undergraduate Students, Sara Bennett-Loudermilk

Retrospective Theses and Dissertations

Cooperative learning in a university setting was explored. Undergraduate students enrolled in a physics course for nonmajors volunteered to participate in a group study program. After a baseline of two tests, volunteers were classified as "Leaders" (A-B average) or "Members" (C-F average). All volunteers received extra credit points for their participation. Records of group study attendance were kept, a questionnaire was distributed to participants, and grades were obtained from the instructor's roll. Multiple correlation/regression analyses showed that for Participant-Respondents: a) level of reported understanding was significantly related to perceived value of participation and b) session attendance was positively related to …

Study Of A Terrain Avoidance Algorithm To Be Used In Conjunction With The Lantirn Terrain Following System, Glenda C. Frazier

Retrospective Theses and Dissertations

This paper describes the development of a basic terrain avoidance algorithm which is proposed for use with the terrain following algorithm in the Low Altitude Navigation and Targeting Infrared System for Night (LANTIRN). The algorithms were modeled in a digital simulation in which an aircraft is flown over a single-obstacle three-dimensional terrain. Vertical acceleration and roll angle commands are generated in the simulation by the algorithms using terrain data collected from the modeled terrain following radar antenna scan. The response of the aircraft to these commands is determined, and the resulting trajectories over the terrain are displayed.

The development of …

Utility Analysis: Estimating The Sdy Parameter For Accounting Supervisors, Terry P. Brownson

Retrospective Theses and Dissertations

Personnel decisions have the potential to influence an entire organization. The effects of these decisions are more credible and relevant when quantified. Historically, benefits were defined in correlational statistics, i.e., validity coefficients. But the increasing demand is for a bottom-line or dollar-value definition. The utility concept presents a methodology for providing the dollar value impact on performance of a personnel intervention program. One parameter of a utility analysis model is the standard deviation of job performance in dollars (SDy). This research develops a SDy value for the yearly production contribution of a first level line accounting supervisor to be used …

Behavioral Problems Among Sexually Abused And Nonabused Children, Kelli B. Mills

Retrospective Theses and Dissertations

This study investigates the level of social competency and presence of behavioral problems associated with young sexually abused children ages 4 to 8, as compared to those among a comparable sample of nonabused young children. Thirty-two parents or guardians, 16 in each group, completed the Achenbach Child Behavior Checklist for each child. Characteristics of the abuse were addressed on an additional questionnaire. Data was collected on 12 female and 4 male children in each group. The results indicated that the amount and severity of behavior problems was greater and social competency levels were lower among the sexually abused children than …

Development Of A Prototype Auditory Training Computer Program For Hearing Impaired Preschoolers, Leslie R. Doster

Retrospective Theses and Dissertations

A computer program which pairs auditory stimuli with visual stimuli was developed for the purpose of providing auditory training for the hearing impaired. It utilizes a Texas Instruments 99 /4A computer and Extended BASIC programming language which allows considerable graphics and sound capability. The lessons make full use of the sixteen colors available and the sound is provided three ways: Texas Instruments speech synthesizer, the computer itself (musical tones and noise), and by tape recorder which is controlled by the computer.

Focus of the lessons, which are designed for children ages three to five, is awareness of sound, environmental sounds, …

Communication Training As Perceived By Training Personnel In Orlando, 1986, Kimberly C. Fleming

Retrospective Theses and Dissertations

No abstract provided.

Continuous Statistical Distribution Curve Fitting And Analysis Tool, Gerald Robie

Retrospective Theses and Dissertations

This paper reports on the implementation and utilization of a micro-computer based simulation modeling verification and validation tool. The interactive software tool, written in BASIC, computes and displays the frequency distribution of a given set of input data, computes appropriate parameters for a continuous statistical distribution which the user selects as likely to represent the population from which the input data sample was obtained, performs several goodness-of-fit analyses on the resultant distribution and provides sensitivity analysis capability on the input data, distribution type selection and distribution parameters.

Integration Of Computer Generated Images With Ntsc Video, Keith E. Lorenz

Retrospective Theses and Dissertations

From the growing field of computer graphics comes the need to combine the computer graphics with video from other sources. Combining video from separate sources creates a problem since both sources are synchronous to each other. The objective of this research report is to present a hardware design approach that will combine two asynchronous video sources to produce one video picture. The combining of two video sources is called “overlaying.” The hardware design described in this report will overlay video from a Digital Equipment Computer PRO-350 with the video from an RS-170 video source. The design approach presented includes system …

Experimental Verification Of Laser Speckle Power Spectral Density, Christopher T. Chiles

Retrospective Theses and Dissertations

The dependence of laser speckle power spectral density on the autocorrelation of the aperture pupil function was verified using a charge injection device (CID) camera. Speckle patterns acquired by the CID array were processed to compute the power spectral density (PSD). Three aperture shapes were studied. There was good agreement between the theoretical and experimental power spectral density shapes, and the cutoff frequencies agreed within five percent error.

Frequency To Voltage Signal Conditioner Circuit Design, Pamela Ann Nelson

Retrospective Theses and Dissertations

The following report explains the design of a frequency to voltage converter circuit using a charge pump. In general, it may be considered a black box which accepts a 0 to 2 kHz frequency signal in, and outputs a 0 to 10 volt DC level.

An additional feature of this circuit is the detection of digital direction signal. A "logic high" direction signal will give 0 to 10 volts out; a "logic low" direction signal will give 0 to -10 volts.

A voltage regulator is also available to power an off-board frequency sensor.