Digital Commons Network^™

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 …

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

Retrospective Theses and Dissertations

No abstract provided.

Nonfluencies And Distraction Theory: A Proattitudinal Approach, Dwight L. Bledsoe

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 …

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.

Estimating Methods For Production Test Labor, Garry K. Stonebraker

Retrospective Theses and Dissertations

This report mentions some of the difficulties faced by labor estimators when predicting the labor necessary to produce complex weapon systems. Specific attention is focused on estimating the durations and frequencies of testing, troubleshooting, and retesting activities. Emphasis is placed on estimating in a logical manner while using factors based on subjective judgment.

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 …

An Integrated Test Plan For An Advanced Very Large Scale Integrated Circuit Design Group, William S. Didden

Retrospective Theses and Dissertations

VLSI testing poses a number of problems which includes the selection of test techniques, the determination of acceptable fault coverage levels, and test vector generation. Available device test techniques are examined and compared. Design rules should be employed to assure the design is testable. Logic simulation systems and available test utilities are compared. The various methods of test vector generation are also examined. The selection criteria for test techniques are identified. A table of proposed design rules is included. Testability measurement utilities can be used to statistically predict the test generation effort. Field reject rates and fault coverage are statistically …

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 …

A Biosystematic Study Of The Fern Genus Lygodium In Eastern North America, Violet M. Brown

Retrospective Theses and Dissertations

The mainly tropical genus Lygodium differs from other ferns in that the fronds are indeterminate and are vine-like. A single species, L. palmatum is native in temperate North America. The temperate Asian L. japonicum is naturalized throughout much of the southeastern United States. About twenty years ago, L. microphyllum was introduced into South Florida and is now naturalized in several counties. The present study documents differences among spores and their generation, development of sporophytes from the fertilized egg, and in flavonoid chemistry. Hybridization experiments showed a strong possibility for cross fertility between species. Experiments with prothallial development and differentiation revealed …

A Consideration Of Rater Status And Appraisal Format In Law Enforcement Performance Appraisal, Kitty Sellers Boynton

Retrospective Theses and Dissertations

No abstract provided.

Design Of An Evaluation System For The Electro-Oculometer, Chrysanthos A. Panayiotou

Retrospective Theses and Dissertations

The purpose of this paper is to develop a system for evaluation of a skin-voltage Oculometer. A test set-up is designed that allows any person to attach the input of the Oculometer (electrodes) on his/her-self and obtain the transfer characteristics of the system. Two set-ups are designed. In the first one, the static transfer characteristics are obtained with the aid of a wall chart. In the second one, the dynamic transfer characteristics are obtained with the aid of a computer moving a bright spot on a large screen television set. An investigation of the possible sources of error is also …

College Of Engineering Research Activities And Annual Report, July 1, 1983 - June 30, 1984, University Of Central Florida. College Of Engineering

Research Activities & Annual Reports

Annual report of research activities and publications of the College of Engineering, July 1, 1983 - June 30, 1984.

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 …

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 …

Analog Flight Simulators To Computer Interface, William J. Selph

Retrospective Theses and Dissertations

The College of Engineering at the University of Central Florida has a flight simulator. This simulator was built as a stand-alone Instrument Flight Rules (IFR) training aid. The college has attempted on several occasions to augment this simulator system with a visual (out the cockpit view) simulation for the trainee pilot. Funding and resources have restricted or limited these enhancements to non real-time simulation. This project/thesis provides the university with part of the solution to accurate real time simulation. The simulated aircraft position and direction is acquired at 9 to 40 Hertz with 10-bit resolution. This data is made available …

Rollins College Catalogue Addendum, 1984-1986, Rollins College

Text Materials of Central Florida

No abstract provided.

Crummer Graduate School, Rollins College

Text Materials of Central Florida

Rollins College catalogue with list of faculty and students and courses by department.

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

Retrospective Theses and Dissertations

No abstract provided.

The Presentation Of A Method For Measuring Dissonance As An Emotion Leading To Attitudinal Change, Deanna Routh

Retrospective Theses and Dissertations

No abstract provided.

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

Retrospective Theses and Dissertations

No abstract provided.

Modeling Of Laboratory Scale Batch Distillations With A Desktop Computer, Dale F. Johnson

Retrospective Theses and Dissertations

A program has been written that simulates the operation of a batch distillation process. The program has been implemented on a Hewlett-Packard 9845T minicomputer and will be used as an instructional aid in a graduate level chemistry course. The program is very user interactive and is capable of using the final conditions from one run as the initial values of the next simulation. The batch simulation is achieved by using a tray-by-tray algorithm and is equipped with three integration techniques; the Euler, the Modified Euler and the 4th order Runge-Kutta methods. The program has the capability for studying the effect …

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 Two Techniques For Estimating The Travel Time Of An Acoustic Wavefront Between Two Receiving Sensors, Frank J. Montalbano

Retrospective Theses and Dissertations

In recent years the United States Navy has concentrated most of its Anti-Submarine Warfare (ASW) research and development efforts toward passive sonar. Its ability to locate enemy targets without being detected gives the passive sonar system a supreme strategic advantage over its active counterpart. One aspect of passive sonar signal processing is the time delay estimation of an underwater acoustic wavefront. From this estimation the location and velocity of the radiating source (target) can then be determined. This report compares two popular methods of estimating time delay utilizing computer simulations of each: the cross correlator and the beamformer.

Awqpsk : An Optimum Modulation Technique For Spread Spectrum Communication, Madjid A. Belkerdid

Retrospective Theses and Dissertations

Quadrature phase shift keying (QPSK) and minimum shift keying (MSK) are the two most used M-ary modulation techniques in Direct-Sequence (DS) Spread Spectrum Communication systems. This thesis introduces a new modulation technique that can compete well with QPSK and MSK in many applications. This new modulation technique, made up of a superposition of one QPSK signal and two amplitude weighted QPSK signals, is called Amplitude Weighted Quadrature Phase Shift Keying (AWQPSK). It is found to have the same probability of error as QPSK and MSK techniques. It has a higher bandwidth efficiency in bits/sec/Hz than QPSK and MSK. It has …

An Exploratory Examination Of The Effect Of Remarriage On Child-Support And Personal Contacts, Walter D. Tropf

Faculty Bibliography 1980s

This paper examines the re-ordering of role reiationships occurring after remarriage, and their effect on child support and personal contacts. Comparisons are made for three marital statuses-separation, divorce and the remarriage of either exspouse. Data were collected from a convenience sample of 101 divorced men. The findings suggest that voluntary support increases after the remarriage of the father but decreases with the remarriage of the ex-wife. Visiting frequency decreases, while visiting length increases with the remarriage of either exspouse. Phone calls remain relatively constant. An examination of ten intervening variables suggests that geographic distance, religion. soclal class, the attitude of …

Patrick Air Force Base Branch Brevard Campus Catalogues, Rollins College

Text Materials of Central Florida

Rollins College catalogue with list of faculty and students and courses by department.