Digital Commons Network^™

Evaluation Of Digital Image Compression Algorithms For Use On Lap Top Computers, Bernard V. Brower

Theses

A technique for the evaluation of image compression algorithms was developed. This technique was then applied in the evaluation of six image compression algorithms (ARIDPCM, ISO/JPEG DCT, zonal DCT, proprietary wavelet, proprietary sub-band coding and the proprietary DCT). Of the six algorithms evaluated, the Wavelet algorithm performed the best on average in image quality at all bit rates. The JPEG DCT was concluded to be the most useful algorithm because of its performance and the advantages that come with being an international standard.

Aberrations Of Thick Phase Holographic Optical Elements, Hong Ouyang

Theses

The wavefront quality of reconstructions from thick holographic optical elements (HOEs) is examined both theoretically and experimentally. The goal of this thesis is to verify the equations of the third-order aberration of HOE's by directly examining the reconstructed wavefront. In addition, possible limitations of holographic materials on HOE performance at low F-numbers and for various recording geometries are determined. The third objective is to test the wavelength shift aberration and to establish the extent to which misalignment can be used to compensate the aberration due to a shift in wavelength.

Integrating Computer Generated Animation And Videography, Annemaria Incorvia

Theses

This thesis developed as a personal exploration in the compositing effects of computer generated imagery, traditional cel animation, and videography. Through trial, great error, and much modification, this collaboration evolved. As a product of transition and progression, it can be said, it echoes the absolute design process. In order to create a visually aesthetic ensemble while incorporating several techniques, each exploration was to support the whole in its depiction. Personal aesthetics and technical limitations determined the inclusion or abstraction of any particular approach, and to what degree, if any, that it would be used, modified or manipulated. Finally, these decisions …

Biomechanics Of Corneal Wound Healing, James Charles Ramier

Theses

The re-establishment of tissue continuity, function, and mechanical proper ties after a through-and-through incision is an important issue in corneal surgery and trauma. Variations in healing can affect vision and patient activity during the recovery period, which may last up to five years. Growth factors introduced into the open wound have the potential to speed up the wound-healing process. The current investigation is concerned with quantitatively characterizing the mechanical properties of corneal tissue and evaluating the effects of epidermal growth factor (EGF), insulin-like growth factor (IGF), and platelet-derived growth factor (PDGF) on accelerating the wound-healing process as compared to a …

Addition Of Arenesulfenyl Chlorides To Quadricyclene, Robert J. Niger

Theses

The addition of arenesulfenyl chlorides to quadricyclene has been investigated. These reactions are rapid, exothermic and yield primairly three isomers. Two of the isomers (type I and type II structures) have the norbornene and nortricyclene carbon skeletons respectively. The structure of the nortricyclene isomer has been thoroughly established with a wide variety of techniques including 2D NMR. It has been found that a bridged sulfonium ion is not an important product precurser in these electrophilic addition reactions. In a attempt to force the formation of a bridged ion, preliminary studies using arenesulfenyl chlorides in which the aromatic ring contains electron-donating …

Enhancements To Atmospheric-Correction Techniques For Multiple Thermal Images, Robert J. Mericsko

Theses

Statistical estimation problems of atmospheric correction techniques for thermal infrared imagery have been studied. A revised multiple-view- angle atmospheric correction technique has been developed and tested using the LOWTRAN radiative transfer model as truth. Its average absolute temperature prediction accuracy for an independent data set is 0.8 K for long-wave infrared imagery and 1.0 K for mid -wave infrared imagery, when error-free data are assumed. The benefit of robust, resistant regression estimators was studied using Monte Carlo simulations having real -world measurement errors and data outliers. An error propagation analysis showed that 1.0-3.3 K of rms error is likely given …

Mathematical Modeling Of Incompressible Flow Through A Collapsible Tube, Jennifer L. Lowdermilk

Theses

An in-depth examination of eight articles pertaining to collapsible tube phenomenon is provided. Experimental models and mathematical models are explored. Two mathematical models are developed by the author, each of which attempt to reproduce experimental data provided by Lyon [37]. Respective models produce sets of coupled differential equations, and Advanced Continuous Simulation Language (ACSL) is utilized to solve these equations. Neither of the author's models provides total numerical reproductions of the experimental data under consideration. However, general trends are obtained which correspond to those observed in Lyon's data. General responses to variations in system parameters are provided for both models.

Light Scattering Study Of Attractive Interactions In A Model Microemulsion System, Dawn M. Campbell

Theses

Static and dynamic (photon correlation spectroscopy) light scattering studies were conducted on AOT/WATER/n- DECANE microemulsions near room temperature. The molar ratio of water to AOT was varied from W = 20 to 30. The volume fractions of the studied microemulsions ranged from $ = 0.03 to 0.45. Static light scattering data was modeled by a theory based on attractive perturbations to hard spheres. From the model, values for A, the attractive perturbation to the second virial coefficient, were determined. It was found that A is an increasing function of W. Photon correlation spectra were analyzed in terms of an adhesive …

The Human Wrist, James A. Perkins

Theses

None provided.

The Design And Implementation Of An 8 Bit Cmos Microprocessor, Jeffrey Correll

Theses

The design and implementation cycle of an 8 bit CMOS microprocessor is discussed. The primary steps in the design procedure of the microprocessor consists of instruction selection, instruction encoding and organizational specification. A simple architecture is chosen to allow the emphasis of this investigation is focused upon the entire design procedure, Software behavioral models of functional blocks within the processor are used to validate the architecture. The functional blocks are then replaced with logic circuit models and tested. After logical simulations of all blocks have been completed, physical simulations of the logic circuits are performed using a SPICE like simulator …

Process Development Of An Analog/Digital Mixed-Mode Bicmos System At Rit, Karl D. Hirschman

Theses

The development of an analog/digital mixed-mode BiCMOS process is presented. The process uses the RIT factory n-well CMOS process as its baseline process. The process is tailored to meet the requirements of an analog/digital system, while minimizing process complexity and maximizing compatibility with the established CMOS process. The process development includes determining the device requirements for the BiCMOS process, evaluating the established CMOS process, and integrating the additional process steps into the baseline process. TMA SUPREM III 1-D Process Analysis Program and RIT's processing history are used as guidelines, keeping manufacturability an important issue. An integrated test chip is developed …

Design And Fabrication Of An Air-Bridge Microphone, Paul L. Jeran

Theses

Today's hearing aids have many shortcomings: they are susceptible to environmental damage, cannot be worn while sleeping or in wet environments, are obtrusive and are expensive. New technologies are being developed which allow most all of these shortcomings to be addressed by placing a portion of the hearing aid within the middle ear. These new technologies require size reductions in several of the aid components, one of these being the microphone. Microelectromechanical Systems (MEMS) has already developed technologies that can be used to construct these microphones. Most microphones constructed using MEMS techniques employ a dual wafer design. the microphone membrane …

The Willard D. Morgan Archive, Jennifer Steensma

Theses

The body of this thesis is divided into three sections; A Thesis Enfolds, A Chronology of Events, Willard D. Morgan Lecture Script , and Register. A Thesis Enfolds, A Chronology of Events. This section describes the events which took this thesis from an idea to its completion, including the successes and failures which were encountered. This section lends insight on the process and learning experience . Willard D. Morgan Lecture Script. This section is in eight parts. Each part has its own heading and footnotes and is authored by either Michael Shuter or myself. The sections include an introduction and …

Modeling And Performance Of Token Bus Lan With Petri Nets, Zhenggang Pan

Theses

A token bus local area network (LAN) is analyzed by Generalized Stochastic Petri Nets (GSPN). The GSPN models of both a single station and LAN for four types of service schemes are obtained and their liveness property is proved. The network performance parameters comprise throughput and delay. The performance analysis for both symmetric and asymmetric single-service systems is conducted for varying load. In order to analyze a token bus LAN with a large number of stations, an approximation method is developed to resolve the .state space explosion problem. A token bus LAN with twenty-one stations is used to show the …

Design For Quality Manufacture : Formulation Of The Macro Architecture For A Dfqm Methodology, Shrad Prasad

Theses

The focus of the available techniques in concurrent engineering for the development and improvement of the design of a product, has been in the areas of product assemblability and manufacturability. These techniques are concerned with the reduction of the cost associated with the manufacture and handling of the product.

The Design For Quality Manufacturability focuses on the quality manufacturability issue of the product design. A macro architecture is developed for the introduction of a new methodology to evaluate designs based on the quality manufacturability of these designs. A set of defects occurring at the assembly stage of the manufacture of …

New Algorithms For Mid-Crack Codes In Image Processing, Wai-Tak Wong

Theses

The chain code is a widely-used description for a contour image. Recently, a mid-crack code algorithm has been proposed as another more precise method for image representation. New algorithms using this new mid-crack code for image representation, restoration, and skeletonization are developed. The efficiency and accuracy can be increased obviously.

Firstly, the conversion of a binary image with multiple regions into the mid-crack codes is presented. A fast on-line implementation can be achieved using tables look-up. The input binary image may contain several object regions and their mid-crack codes can be extracted at the same time in a single-pass row-by-row …

Ultrasonic Ranging System For Gait Analysis, Mu Wu

Theses

A new method of measuring range for gait analysis is described. The method is based on a coherent measurement of the phase shift of an ultrasonic signal as a function of range.

A prototype of the ranging system was breadboarded, tested, and found to have a relative accuracy of better than 0.5 mm over a range of 3 meters. The maximum range the system is at least 20 meters. The method used here is new and has not been found in the literature. Tt is demonstrated by experiments with a prototype system that can measure distance with a higher accuracy …

An Embedded Controller-Based Fiber Optic Sensor For Use In Fresh Concrete, Zhaowu Zhang

Theses

The principle of refraction and reflection of light in optical fibers is applied to detection of air bubbles in a previous thesis. In the earlier work, a microcomputer was employed in acquisition and processing of air bubble data. In the present thesis, an embedded controller system is interfaced and programmed in order to replace the microcomputer. In this way, the system can be more easily integrated into field construction operations. Reflected light intensity signals are detected and analyzed by a microcontroller. The entrained percentage of air in concrete is displayed immediately. The signal can be transferred through a UART (Universal …

Pure Strong Competition For Two Microbial Populations In A Chemostat, Efthimios Ioannis Banias

Theses

The dynamics of pure, strong, double competition between two microbial populations in an ideal chemostat have been investigated by using mathematical and numerical analysis. The two nutrients competed for have been assumed to be complementary for both competitors. Inter active models have been used for the specific growth rates. Two cases have been considered; one in which neither of the two substrates exerts inhibitory effects on the growth of either one of the competing populations, and one in which the growth of one population is inhibited by only one of the two substrates. The primary focus of this investigation was …

Evaluation Of Homogeneity For Hazardous Waste Solidification By Video Imaging Technique, Yi-Min Gao

Theses

The field of chemical solidification has just begun to mature into an accepted environmental technology for hazardous waste disposal. From the engineering point of view, some key issues still dominate the feasibility and effectiveness of hazardous waste solidification process. "Mixing" is essentially regarded as the most critical element but unfortunately, no evidence has been proposed to prove the homogeneity of the large monolith produced by solidification in order that the effectiveness of the solidification process can be evaluated in satisfactorily short time. The Homogeneity Evaluation by Video Imaging System (HEVIS) proposed in this study is to solve this problem with …

I: Reaction Of Ch3c1 With H2 And Ch4 Under Oxidation And Pyrolysis Conditions Ii: Kinetic Analysis Of C2h6, C2h4, And C2h2 Reactions With Oh, O, H, And Cl, Qing-Rui Yu

Theses

Experimental and detailed modeling are presented for the high temperature combustion systems involving CH₃Cl/CH₄/O₂ and C₃3Cl/H₂/O₂ reactions. More important C2 species reaction rate constant are created. A mechanism incorporating 263 step elementary reactions and 76 stable compounds and active radicals is developed based on (1) fundamental thermochemical and Kinetic principles (2) Quantum Rice-Ramsperger-Kassel (QRRK) theory analysis (3) accurate thermodynamic Properties and thermochemical analysis (4) reliable experimental data to validate our model.

The study of Part II evaluates and analyzes theoretically the rate constants of C₂H₆, C …

Computational Aspects Of A Three Dimensional Non-Intrusive Particle Motion Tracking System, Avadhani S. Ashok

Theses

Development of a technique for non-intrusive particle motion tracking in three dimensions is considered. This technique is based on the principle of magnetic induction. In particular, the determination of the position and onentation of the particle from the information gathered is the pnncipal focus of this thesis. The development of such a system is motivated by the need to understand the flow patterns of granular material. This is of cntical importance in dealing with problems associated with bulk solids flows which occur in almost all industries and in natural geological events. A study of the current diagnostic techniques reveals the …

Interpreting And Integrating Landsat Remote Sensing Image And Geographic Information System By Fuzzy Unsupervised Clustering Algorithm, Gwotsong Philip Chen

Theses

Due to the resolution of Landsat images and the multiplicity of the terrain, it is improper to assign each pixel in an image to one of a number of land cover types by using the conventional remote sensing classification method. This is also known as the hard partition method. The concept of the fuzzy set provides the means to resolve this problem. This paper presents a two-pass-mode fuzzy unsupervised clustering algorithm.

In the first passing, the cluster mean vectors which represent the geographic attributes or the land cover types are derived. In the second passing, the concept of fuzzy set …

Measurement Of Vocs Pollution From Recycling Petroleum Contaminated Soils In Hot Mix Asphalt Concrete, Yaoqing Chen

Theses

The petroleum contaminated soils (PCSs) due to leaking underground storagetanks are required to be removed and isolated in a designated area for proper treatment. Recently, a technique of recycle has been developed to incorporate PCSs into hot mixing asphalt (HMA) as a partial substitute for stone aggregate; the mixture then was used for road paving.

This study focuses on the estimation of the emission of volatile organic compounds from the process of mixing asphalt with PCSs and the contamination of ground water by paving the asphalt mixture made with PCSs. Eleven volatile organic compounds and total non-methane organic compounds emitted …

Slow, Red-Green Counterphase (Parvo) And Fast, Black-White Magno) Snow In The Detection Of Scotomata In Primary Open-Angle Glaucoma, Rey Favis

Theses

No one knows why Primary Open Angle Glaucoma sufferers can detect their glaucoma induced blindspots by monocularly fixating on a mark in the center of a screen of television snow. An attempt was made to determine which of two pathways from retina to lateral geniculate nucleus is more involved in the detection of the blindspots. Previous studies demonstrated that the large diameter axon, magno cellular pathway is maximally stimulated by 30 Hertz high contrast black-white patterns. The small diameter axon, parvo cellular pathway is known from past research to be maximally stimulated by 12 Hertz red-green counterphase patterns. It was …

Low Temperature Synthesis And Characterization Of Lpcvd Silicon Dioxide Films Using Diethylsilane, Chakravarthy Srinivasa Gorthy

Theses

Diethylsilane (DES) has been used as a precursor to produce silicon dioxide films by low pressure chemical vapor deposition. These films were synthesized in the temperature range of 350 to 475°C thus allowing the use of the material as an intermetal dielectric or as a top layer passivation coating in microelectronic devices. In that process, the growth rate was observed to follow an Arrhenius behavior yielding an activation energy of 10 kcal/mol. The growth rate was also observed to increase with higher pressure and to vary as a function of the square root of the DES flow rate and O …

Disinfection Of Wastewater Using Ultraviolet Radiation, David L. Klemm

Theses

The disadvantages associated with the use of chlorine for disinfection, in conjunction with improvements in ultraviolet radiation disinfection technologies have led to the recent increased use of ultraviolet radiation to provide disinfection of effluents from wastewater treatment plants. The theory of ultraviolet radiation and the engineering design of the ultraviolet disinfection system are discussed in depth.

The operational history and records of two wastewater treatment plants that use ultraviolet radiation for disinfection were analyzed in an attempt to develop correlations on the factors that affect ultraviolet radiation disinfection efficiency and to investigate as to whether disinfection with ultraviolet radiation is …

Expert System For Preventive Maintenance The Aluminum Extrusion Press And Related Equipment, E-Ping Lin

Theses

ESPM is an Expert System for Preventive Maintenance that provides the framework for application-specific equipment maintenance tools. The expert system for preventive maintenance and diagnosis was developed for the Aluminum Extrusion Press and Related Equipment. The system is built in VP-Expert and is implemented on a personal computer.

The expert system includes many characteristics of an expert system cell because it can be expanded easily by adding new information to its knowledge base or by changing the existing information. The expert system can be connected directly with a PC system through a VP-Expert software package and can interact with C …

Design Of A Material Handling System For The Automatic Assembly Of A Shower Head, Irshad Meherally

Theses

The design of a Material Handling System for the Shower Head assembly is proposed. The working principle of complete automation and individual workstation is presented using "I-DEAS" software. Alternative equipments and their usage in the automation of the assembly is also proposed. Custom made fixtures, workcarriers, orienters, magazines, part feeders are designed for the assembly. Analysis of design for assembly in terms of cost and efficiency is performed by generating a Coding System Technique.

Influence Of Fly Ash And Chromium Characteristics On Compressive Strength Of Mortar And Concrete, Lin Wang

Theses

The behavior of cement mortar incorporating fly ash varies with chemical and physical characteristics of fly ash. Of many parameters affecting the compressive strength of fly ash mortar, five were investigated in this study. They are the particle size, the particle size distribution, fineness of fly ash, the CaO content and the Fe₂O₃ content.

Fly ashes from two different sources were used in this study. One comes from the Public Service Electric and Gas (PSE&G)'s electrical generation station in Hudson County and the other is from the PSE&G plant in Mercer County. Each was separated into seven …