Digital Commons Network^™

A Three Part Research Report: The Synthesis Of Potential Insecticides, N-(4-Heteroaryloxybenzoyl)-N'-(2,4-Dichlorobenzoyl) Hydrazines: A Reinvestigation Of Hexamethylphosphoramide With Ketoximes; Regioselective Fluoralkoxylation And Polyfluoroalkoxylation Of Activated Dihalobenzenes And Dihaloheterocycles, Gary A. Decrescenzo

Retrospective Theses and Dissertations

This report discusses research in three areas of organic synthesis: The synthesis of potential insecticides; the reinvestigation of the reaction of hexamethylphosphoramide with ketoximes; and the regioselective fluoroalkoxylation and polyfluoroalkoxylation of activated dihalobenzenes and dihaloheterocycles. In Part I, a series of N-(4-heteroaryloxybenzoyl)-N'-(2, 3-dichlorobenzoyl) hydrazines are synthesized, and attempts at cyclic dehydration to the corresponding 2, 5-disubstituted-1, 3, 4-oxadiazoles are discussed. In Part II, the synthesis of N, N-dimethyl-N'-aryl amidines by the reaction of aryl alkyl and diaryl ketoximes with HMPA is discussed. In Part III, a series of activated dihalobenzenes and dihaloheterocycles are reacted with sodium trifluoroethoxide to study the …

A Gate-Array Realization Of An Algorithm For Division, Salman Y. Abbasi

Retrospective Theses and Dissertations

A realization of a division algorithm suitable for high speed pipeline and realtime processors is presented. Implementation of the divide algorithm can be achieved by utilizing LSI / VLSI gate array technology. The divider performs precision, high speed 9 bit sign magnitude division. The design consist of combinational logic, where input and output data are latched into input and output registers. Data propagates through 16 divide stages. The n'th stage generates the n'th quotient bit upon receiving the updated dividend and controls from the previous stage. A simulation program is developed to verify the algorithm, and an analysis for speed …

The Combination Of Artificial Intelligence And Robotics For A Mobile Robot Application, Leslie D. Interrante

Retrospective Theses and Dissertations

The combination of artificial intelligence and robotics led to more flexibility and powerful mobile robot applications. The robot and its environment were simulated with a microcomputer to gather statistical information. An application was demonstrated in the laboratory with a mobile robot. The robot recognized an obstacle in its path and generated the necessary changes in its environment so that it could successfully complete a required task.

Processing Of Thin Film Devices, Ramzi Delpak

Retrospective Theses and Dissertations

The ability to do thin film processing has been established at UCF. This paper describes the facilities available. RF and DC sputtering was used for material deposition. The parameters for both were established experimentally, and the results are presented. Resistor and capacitor test patterns were used to test the accuracy of the system. The devices were fabricated and tested; experimental results are discussed.

Display To Camera Calibration Techniques, Philip Gatt

Retrospective Theses and Dissertations

In today's technology, with digitally controlled optic sensing devices, there exists a need for a fast and accurate calibration procedure. Typical display devices and optic fiber bundles are plagued with inaccuracies. There are many sources of error such as delay, time constants, pixel distortion, pixel bleeding, and noise. The calibration procedure must measure these inaccuracies, and compute a set of correction factors. These correction factors are then used in real time to alter the command data, such that the intended pixels are correctly commanded. This paper discusses a calibration procedure, which employs a special matrix inverse algorithm. This algorithm, which …

The Relative Effectiveness Of Drainfield Trenches And Absorption Beds In Disposing Of Bacteria, Viruses And Nitrates From Septic Tank Effluent, Raymond E. Collins

Retrospective Theses and Dissertations

No abstract provided.

A Comparison Of The Subtests Of The Gesell School Readiness Screening Test As Predictors Of Reading Achievement, Dolores W. Sapp

Retrospective Theses and Dissertations

The major purpose of this study was to determine which subtests of the Gesell School Readiness Screening Test are the best predictors of reading achievement. The procedure used was a stepwise multiple regression to determine which subtests were the best predictors of achievement for each reading section of the Comprehensive Test of Basic Skills. Seventy-two students from four schools were evaluated for this study. Three testing instruments were administered to these students. They were the Gesell test, the Otis-Lennon test, and the reading subtests of the Comprehensive Test of Basic Skills. The Gesell test consisted of eight subtests: Cubes, Name, …

Media-Sponsored Polls: Opinion Reporters Or Opinion Formers?, Susan M. Mckinney

Retrospective Theses and Dissertations

No abstract provided.

An Application Of Speech Synthesis, Edward J. Purvis

Retrospective Theses and Dissertations

This paper discusses the implementation of a synthesized computer voice facility for a missile trainer. The actual facility hardware is described. Software used to control the hardware operation is presented and discussed.

Small Group Training And The Enhancement Of Decision Quality, Member Participation, And Consensus Attainment, Donna S. Cluett

Retrospective Theses and Dissertations

No abstract provided.

Love In The Eighties: A Test Of The Socioeconomic Theory, Loretta L. Givens

Retrospective Theses and Dissertations

No abstract provided.

Highway Runoff And Sediment Control, Susanna H. Rehmann-Koo

Retrospective Theses and Dissertations

A literature survey was conducted on the erosion and sedimentation process and techniques for control. Erosion and sediment control techniques were found to be very site specific. Several techniques are analyzed for their maintenance and operation requirements, construction costs, and effectiveness in quantity and quality control. Once technique, namely swale blocks or berms was designed and constructed to illustrate cost and effectiveness. Design aids were developed for various berm heights and highway slopes as a function of berm spacing for typical highway cross-sections to aid in the design of swale blocks. Construction costs were estimated for the berms and retention/detention …

Transformation Of Phosphorus In Highway Runoff Management Systems, David B. Pearce

Retrospective Theses and Dissertations

The operation and maintenance of highways contributes a variety of pollutants to surface and subsurface waters. Solids, heavy metals, nutrients, oil and grease, pesticides and bacteria can all be associated with highway runoff. Although the full extent of the effect of all these runoff constituents upon the quality of surrounding waters is not well defined, this study will mainly concentrate on nutrient contaminants (essentially phosphorus). The last decade has seen increasing efforts in research and development to abate contaminant discharges from highway runoff using a number of treatment facilities such as swale and detention/retention ponds. An evaluation of the effectiveness …

The Expression Of Anger As A Function Of Self-Esteem, Kimberly M. Brooks

Retrospective Theses and Dissertations

This study investigated the relationship between level of self-esteem and anger expression. Fifty female and 36 male university students completed the Tennessee Self-Concept Scale and the Anger Self-Report. A 3 x 2 AVOVA showed a significant relationship between self-esteem and the ASR scales of Anger Awareness, Guilt, Mistrust, and Total Anger. In addition, women were found to experience significantly more anger-related guilt than men, while verbal and physical anger expression were both characteristic of men. The results further indicate that men experience greater mistrust and suspicion of others These finding suggest that low self-esteem individuals report more anger, but have …

The Effect Of Differential Levels Of Assumed Confidentiality On Amount Of Self-Disclosure In Hight Trait-Anxious Students, Gretchen S. Thwing

Retrospective Theses and Dissertations

No abstract provided.

The Extent And Prevalence Of Family Violence In Seminole County, Karen J.L. Casalese

Retrospective Theses and Dissertations

This study was conducted for the Task Force on Domestic Violence in Seminole County whose purpose it was to study and address the problems of domestic violence. The data were collected by random digit dialing telephone interviews of a representative sample of 536 Seminole county families. The sample represented a .01% sample of the total population. The questionnaire was developed as a structured interview with unforced responses to many of the questions. Demographic information was also obtained on the respondent and members of the respondent's family. It was hypothesized that the Seminole County survey would yield family violence rates similar …

An Investigation Of The Moderating Effects Of Personality Variables On The Relationship Of Role Conflict And Role Ambiguity To Individual Performance, Adam J. Gross

Retrospective Theses and Dissertations

The purpose of this study is to investigate the moderating effects of personality variables on the relationship of role stress to performance. The sample consisted of 45 males and 57 females from undergraduate psychology classes at the University of Central Florida. Subjects completed the Adjective Check List (Gough & Heilbrun, 1965), a written decision-making exercise, and a derivative of the role conflict and role ambiguity scales developed by Rizzo, House, and Lirtzman (1970). these yielded personality, performance, and stress scores for each subject. Each personality variable (achievement, aggression, autonomy, flexibility, and introversion) was partialed out of the relationship between role …

Computer Assisted Instruction (Cai) Effect On Strategic Electronic Troubleshooting Performance, Virginia T. White

Retrospective Theses and Dissertations

No abstract provided.

Anxiety, Sex-Role Orientation, And Computer Interaction, Mary Donlin-Senne

Retrospective Theses and Dissertations

A group of 125 female college students were given Spielberger's State Anxiety Inventory and Bem's Sex Role Inventory. Those females with minimal typing skills and minimal computer experience interacted with a computer ten minutes and then given a second State Anxiety Inventory. Pretest and posttest data were obtained from forty-eight subjects selected on the basis of Bem's Sex Role Inventory to test the hypotheses: females that score high on the Androgynous scale of the Bem Sex Role Inventory (BSRI) will experience relatively low levels of anxiety while interacting with computer, females that score high on the Feminine and Undifferentiated scales …

A Single Fault-Tolerant Dual Channel Controller, Thomas J. Lowery

Retrospective Theses and Dissertations

The advent of the VLSI technology makes it feasible to offer a once expensive system attribute called fault-tolerance to a wide variety of applications. This can be accomplished by using off-the-shelf single board computers and peripherals as the heart of the system. Custom design boards can then be added to meet the specific requirements of each application.

Effects Of Classroom Setting On Self-Esteem In Learning Disabled Students, Drema G. Moody

Retrospective Theses and Dissertations

This study investigates the self-esteem of learning disabled students required to attend learning disabilities classes. Subjects were 35 7th- through 9th-grade, male and female learning disabled (LD) students. Nineteen of the subjects attended at least one resource LD class while the other 16 subjects attended mainstream classes. These groups were matched on intelligence quotients (Wechsler Intelligence Scale for Children-Revised) and reading comprehension standard scores (Peabody Individual Achievement Test) so that no significant differences between the groups, on these measures, existed. The Tennessee Self-Concept Scale (Fitts, 1965) was administered to all subjects, along with the closing question, "Does attendance in learning …

Graphic Display Of Geographic Spatial Data, Jill G. Ashby

Retrospective Theses and Dissertations

This project developed computer graphics to display spatial and statistical data in a functional, appropriate and articulate manner. The spatial data creates mapping of Orange County focusing on traffic zones. The graphs display statistical data projecting from spatial areas presented in a simple form. The graphs produced by the system are geared towards an audience involved with transportation and planning decisions for Orange County. The graphics employ population, income, number of dwelling units, trip generation and trip production data based upon the 1980 census. The population, income, and number of dwelling unites statistics include predictions for 1985 through 2005 in …

Biotoxicity Of Highway Runoff Metals To Gambusia, John M. Bateman

Retrospective Theses and Dissertations

A research study was conducted to examine the relationship between speciation of heavy metals (Zn, Cd, Pb, Cu) and their biotoxicity. Therefore, static bioassay experiments were designed to determine LC-50 values for those metals on mosquitofish, Gambusia affinis. The standard bioassay scheme consisted of twelve 16-liter all-glass aquaria that provided duplicates of five different metal concentrations and a control for each run. Deionized tap water and filtered retention/detention water from Maitland Pond were used for bioassays. The effects of various physiochemical parameters such as pH, alkalinity, hardness and organic complexation on metal toxicity were determined. Also, synergistic and antagonistic effects …

Factors That Influence Plant Species Richness On Habitat Islands Of Sand Pine Scrub, Cindy B. Connery

Retrospective Theses and Dissertations

No abstract provided.

Gain Control Of A Time-Varying Signal Using A Multiplaying Dac, Yassin Movassaghi

Retrospective Theses and Dissertations

The design of a high speed circuit accepting a bipolar analog signal with a 3 db bandwidth of 20 MHZ and an eight bit unipolar gain control signal is presented in this thesis. The system produces the product of these two signals at a rate of one digital byte every 25 nsec. At the heart of the system are two multiplying digital to analog converters (DACs) operating in parallel. The circuit design was based on a statistically validated model for a multiplying DAC. This circuit could be used for controlling the intensity of each picture element (i.e. pixel) for many …

The Design Of Standard Cell Vlsi Circuits, Randolph L. Abidin

Retrospective Theses and Dissertations

There are basically three methods of designing Very Large Scale Integrated (VLSI) circuits; Gate Array, Standard Cell, and Full Custom. The objective of this research is to design a VLSI circuit using the Standard Cell approach. A prime requisite for a successful design of these circuits is an integrated Computer Aided Design (CAD) system. The chip design requirements for an integrated CAD system are developed and their interrelationships are presented. As VLSI circuits grow in complexity, the problem of how to test them becomes more difficult. Two methods for testing are defined: 1. Insertion within the system of which the …

A Comparative Study Of Computer Interfacing Techniques For Military Training Devices, Gary R. Fraas

Retrospective Theses and Dissertations

This report surveys many of the interfacing techniques currently in use on emerging military training devices. The primary focus of this report is associated with the hardware aspects of computer interfacing. After a brief introduction into the various aspects of military training devices, this study presents various computer related interfacing techniques used on military training devices. Topics addressed in the study include custom designed interfaces, commercial packages, serial communications with an emphasis on RS-232, -422, -423, and -449 serial standards as well as local area networks. Then, a number of bus standards are presented and finally, interface products pertaining to …

Non-Iterative Finite Impulse Response Design Techniques, Carlton D. Bishop

Retrospective Theses and Dissertations

A general, non-iterative design technique for low shapefactor, transversal filters is presented. This design approach uses two cosine series to specify appropriate eigenfunctions. An infinite set of such eigenfunctions are defined and the method for choosing the coefficients is discussed.

The total filter response is specified as the product of two individual frequency responses. The impulse response of each is then determined by applying the superposition of appropriate eigenfunctions. The criteria for choosing the appropriate eigenfunctions is discussed.

A synthesis procedure for designing surface acoustic wave filters is presented. The effects of truncating the impulse response are also explored. A …

Effects Of Finite Length Registers On A Modified Directform Realization Of A High Order H(Z) Transfer Function, Angel Vanrell

Retrospective Theses and Dissertations

When a digital process is realized on a general-purpose computer or a special-purpose hardware, errors due to finite register length are introduced. These errors are due primarily to arithmetic roundoff, coefficient quantization, and scaling rules. This paper addresses the effects of finite word length on a direct-form implementation of a high order H (z) transfer function. The development and analysis of a modified direct-form realization suggested by Dr. Fred O. Simons, are carried out via FORTRAN emulation of a fourth-order low-pass Butterworth filter. The results are presented as a parametric tradeoff of signal-to-noise ratio at the filter output versus word …

The Design Of A Qpsk Modem And The Probability Of Error Analysis For An Sca Based Digital Communication System, Fouad Guediri

Retrospective Theses and Dissertations

An analysis of the probability of error for an SCA based digital communication system is developed. QPSK modulation and the signal to noise ratio degradation due to the SCA transmission are analyzed to predict the performance of the system in terms of probability of error. The design and analysis of a QPSK model, a pseudorandom generator, and a pseudorandom correlator are also presented in this thesis.