Digital Commons Network^™

The Ucf Report, Vol. 06 No. 26, February 15, 1984, University Of Central Florida

The UCF Report

International fame for UCF: We can host Pan Am Games: Peterson; Preps converge for contest; Women's Club schedules trip; Many firms want jobs on campus; Canadian studies views constitution; A vote ahead.

The Ucf Report, Vol. 06 No. 25, February 8, 1984, University Of Central Florida

The UCF Report

Ex-chancellor Schmidt booked for President's Circle dinner; Mathematician to visit UCF; Student public relations groups hosts seminar of professionals; Open auditions for 'The Bacchae'; Iva Kitchell scholarships established; 'What's new at the Theatre?: It's curtains for UCF's playhouse.

The Ucf Report, Vol. 06 No. 24, February 1, 1984, University Of Central Florida

The UCF Report

Annual luncheon meeting: members to vote on larger Credit Union board; Composer Ned Rorem here Feb. 16; Veteran officer Nelson named assistant director of police; Escorts relocate in Info Booth; Pre-game party on campus Friday; Research Park staff to move.

Central Florida Future, Vol. 16 No. 17, January 27, 1984

Central Florida Future

Resolution calls for lower fee; Students scramble for scarce spaces (photo); Drinking age bill dies again; Off the trail SOC [South Orlando Campus] worth the drive down OBT; Library is evacuated after alarms go off; UCF cable channel 35 goes on the air today; Union holds elections, plans year; Future Opinion: Fee decision was hasty; Future From our readers: Athletic fee: One hot potato Scrap athletics; give money to academics.

The Ucf Report, Vol. 06 No. 23, January 25, 1984, University Of Central Florida

The UCF Report

Retired pioneer donates collection: Campus acquires historical x-ray equipment; Community College Day on Feb. 4 expected to draw 100 statewide; Foundation dinner scheduled Mar. 28; UCF opens office.

Central Florida Future, Vol. 16 No. 16, January 20, 1984

Central Florida Future

Senate approves Sowinski's cabinet choices -- Sowinski issues SOC [South Orlando Campus] guidelines; Photo of Library construction reflected in the windows of the Administration Building; Stripper at SG banquet leads to inquiry; Future News beat: UCF conducts review of Wanielista; AXO [Alpha Chi Omega] chapter to close after 11 years at UCF; Future After the News: UCF's bureaucracy leaves no one untouched.

Central Florida Future, Vol. 16 No. 15, January 13, 1984

Central Florida Future

Former presidents to review SG; Enrollment could drop this term; Photo of students waiting in line during add-drop to add courses; Future wins ACP award fourth time; Students may pay more for health center fee next year; Photo of students waiting in line to purchase textbooks at the Bookstore; Future Senate notebook: Senate to tackle drinking age and Proposition I; Bill calls for candidates to run on ticket system; Freeze kills plants, damages water lines; Chandler halts drive to recall Geary; Some schools trying the computer business; UCF professor studies space blahs; PACBOY (A paid supplement by the Program & …

The Ucf Report, Vol. 06 No. 21, January 11, 1984, University Of Central Florida

The UCF Report

'83 brings Foundation record $2.25 million; Speakers tell graduates: Continue learning and stay in Central Florida; $150,000 donated by UCF grad; TV executive says media shared concern for education's future; M.L. King celebration Jan. 13-14; 'Eagle Lady' speaks to Women's Club; O'Leary tribute at UCF on Sunday.

Stormwater Detention Systems With Effluent Filtration, Linda M. Van De Graaff

Retrospective Theses and Dissertations

The growing concern for water quality enhancement of our surface waters has led to changes in detention facility design. Providing a filter media for the effluent water to travel through before discharge into the environment has become an area of interest. Thus, detention facilities may be used for both water quality and quantity control. Different soil medias were studied for the potential of pollutant removal and infiltration rates usable in design work. Both laboratory and field experimentation were performed. A computer program was also developed to model stormwater movement through a swale detention system. This research was performed to examine …

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 …

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 …

The Frequency Response Computation Of H(Z) Models That Include Digital Error Effects, Carol R. Smith

Retrospective Theses and Dissertations

Pulse responses are not suitable for evaluating H(z) frequency responses that include digital errors. Digital error effects, however, are conveniently included in H(z) frequency response calculations based on the step response. A non-real time algorithm for computing the frequency response of a real time digital filters based on the filter step response is developed and verified through an example.

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 …

A Microcomputer Controlled Contouring Machine, Kripaker K. Punja

Retrospective Theses and Dissertations

An Apple microcomputer and a three axis milling machine are the basis for a CAD/CAM system with the capability of drilling and contour milling operations. The milling machine axes are driven by three stepper motors under the control of the Apple microcomputer and the ISAAC data acquisition module. An interactive part design program using high resolution color graphics has been developed. It employs lines, circles and points to define the geometry for the part. The design is entered at the CRT and stored as a CAM database on the user disc. Once the design is complete it is postprocessed and …

Investigation And Evaluation Of Random Number Generators For Digital Implementation, Ylberto V. Ruiz

Retrospective Theses and Dissertations

The continuous improvement in the speed of digital components in conjunction with reduction of size has brought about a revolutionary age of microprocessors. Mathematical functions, which at one time could only be implemented by complex analog circuitry, can now be easily implemented via microprocessors and high density digital components. Principles of random number generation must be understood in order to implement pseudo-random algorithms in a digital random frequency generator (DRFG) design. Chapter 1 is a discussion of several types of random number algorithms which have been used in the past and outlines the deficiencies and advantages associated with each individual …

Computer Simulation Of Cross Correlators For Correlated Inputs, Linda J. Coulter

Retrospective Theses and Dissertations

Cross correlator systems, analog and clipped input channels, with correlated random narrow band Gaussian noise as inputs are computer simulated. The performance of each system is evaluated on the basis of the output signal-to-noise ratio. The output SNR of each system is compared with theoretical asymptotic approximations computed as a function of the SNR of the input channels. The output of the simulation compares within 3 dB of the asymptotic approximations for the analog correlator for all values of the correlation coefficient tested and for the systems with clipped input channels with uncorrelated inputs. For the systems with clipped input …

Digital Hearing Aids, Somsak Deawsurintr

Retrospective Theses and Dissertations

This paper describes the design of a hearing aid using digital techniques. The Amplitude Compression Amplifier and Digital Filter are discussed. General review of different filter types are presented as background for the design of Digital Filters. The design procedure for Digital Filters and the software program for the Intel-2920 signal processor are created. Finally, the program is tested by simulation via the 2920-Simulator.

The Use Of Computers In Construction Management, Joella S. Francois

Retrospective Theses and Dissertations

A study on the use of computers for the management of construction projects has been conducted. The findings of this study will be presented here and will consist of: 1. An examination of the different utilization of computers in the field of construction management. 2. An analysis of the methodology of some well known computer software packages used by many construction companies. 3. A complete documentation of computer codes that have been developed a. to illustrate the use of computer graphics for an effective utilization of some construction management techniques such as the bar chart b. to solve the problem …

Millimeter Wave Scattering From A Rough Surface, Charles H. Hargraves

Retrospective Theses and Dissertations

This thesis presents an introduction to rough surface scattering and describes techniques that were used during the course of this project to measure and characterize electromagnetic scattering from a rough surface. An analytical model is described that accurately predicts the statistics of the measured scattering data. The CW measurement process that was used is described and scattering measurement results are presented. Calculated and measured statistical moments are compared in order to show agreement of measurements with various statistical scattering models. Recommendations for additional work in the area of measurement and analytical modeling of rough surface scattering are given.

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, …

Image Analysis And Segmentation Based On The Circular Pipeline Video Processor, Jon M. Albritton

Retrospective Theses and Dissertations

Visual inspection of printed circuit boards has generally depended on human inspectors. However, a system has been developed which allows for automated visual inspection using robotics and modern image processing techniques. This paper first introduces automatic visual inspection processes, overviews the Automatic Board Assembly, Inspection and Test (ABAIT) system, reviews image processing concepts and describes the Circular Pipeline Video Processor (CPVP). Image data from the CPVP is analyzed and an investigation into alternate segmentation algorithms to identify circuit board features is presented. The relative performance of these algorithms is compared conclusions drawn.

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 …

A Two Part Research Report: Aromatic Nucelophilic Fluoroal Koxylation Via Cationic Phase Transfer Catalysis And Reactions Of Unsymmetrical Vinamidinium Salts With Organometallic Reagents, Joseph E. Coury

Retrospective Theses and Dissertations

This report discusses research which was conducted in two areas: the study of aromatic nucleophilic fluoroalkoxylation assisted via cationic phase transfer catalysis and the study of unsymmetrical vinamidinium salts and their reactions with organometallic reagents.

Sodium alkoxides have been successfully used to fluoroalkoxylate activated halo- aryl and heteroaryl substrates under phase transfer catalysis conditions. Optimum reaction conditions incorporated tetra-n-butyl-phosphonium bromide as the catalyst and refluxing toluene as the solvent medium. Different quarternary phosphonium and arrmonium salts have been evaluated as catalysts: also, the effects of activating groups, leaving groups, and nucleophiles have been reported.

The reaction of 3-dimethylamino-3-phenyl-prop-2-en-l-ylidendimethyliminium perchlorate with …

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 …

Using Simulation To Predict The Financial Effect Of Hospital Management Policies Under A Prospective Reimbursement, Timothy G. Atkins

Retrospective Theses and Dissertations

Recent legislation by Medicare restricts its reimbursement per patient according to the patient's particular type of disease. The reimbursement is based on a set of Diagnosis Related Groups (DRG's), which categorizes patients into disease classifications. As a result, hospitals must make efficiency gains and managers must look for new ways to provide quality care while containing costs. A simulation technique was developed by which the financial results of particular administrative policies can be predicted. Patient billing data were collected over a three-month period and analyzed for the purpose of simulating length of stay and resource consumption per cost center. Regression …

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 …

Oxidation Of Valencene To Nootkatone, Tung F. Chen

Retrospective Theses and Dissertations

The liquid phase autoxidation of the readily available sesquiterpene valencene to the commercially important perfuming agent nootkatone utilizing gaseous oxygen at atmospheric pressure has been investigated. Catalyst systems involving transition metal salts and complexes, and phase-transfer catalysts have been evaluated under different conditions of valencene concentration, catalyst concentration, reaction temperature, solvent and oxygen flow rate. Of eighteen candidate catalysts for the oxidation of valencene to nootkatone, chlorocarbonylbis (triphenylphosphine) iridium (Vaska's catalyst) demonstrated good activity and appeared to show the best potential for future work.

Surface Acoustic Wave Bidirectional Filter Synthesis And Analysis, Raymond L. Yap

Retrospective Theses and Dissertations

Surface Acoustic Wave (SAW) devices are manufactured using standard metallization and photolithographic techniques that have been established by the semiconductor industry. The facilities in the newly developed Microelectronics laboratory at the University of Central Florida will be utilized in the fabrication of a SAW device.

This thesis will outline the complete procedure beginning with the initial design from given specifications, up to mask generation, fabricating and testing of the device. This will serve to calibrate the fabrication process for future work in SAW device and semiconductor fabrication.

The models that are used in the SAWCAD design software will be verified …

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.

Analytical Investigation Of Performance Of A Solar Powered Free-Piston Stirling-Stirling Heat Pump Cooling An Insulated Enclosure, Gary D. Beckfeld

Retrospective Theses and Dissertations

An analytical investigation was attempted of a solar driven free-piston Stirling engine driving a second free-piston Stirling engine as a heat pump. A dynamic model and a thermodynamic model with free convection heat transfer were derived. The governing equations were programmed to obtain numerical solutions by computer. Graphs of piston displacements, volumes, pressures, mass cycles, and temperatures versus time are presented. Engine work output, operating frequencies, and efficiencies are calculated. Effects of parameter variations are presented. However, because proper phase angles could not be obtained for this model, the cooling performance of the system could not be evaluated. Limitations of …