Digital Commons Network^™

Synthesis Diamond Films From Low Pressure Chemical Vapor Deposition, Mathieu Freeman Jon

Theses

Experiments were performed on the deposition of both diamond crystals and films from hydrogen and methane gas mixtures on silicon and polymer substrates by various plasma enhanced chemical vapor deposition techniques (PECVD) . Microwave, arc, and dc plasmas to assist the deposition of the diamond metastable phase of carbon were used. Discussed in the following thesis are the plasma configurations used together with experimental parameters such as gas composition, flow rate, chamber pressure, and power. The crystallinity of the films, which can be controlled and changed from polycrystalline to amorphous, was ascertained by scanning electron microscopy (SEM) . Other characterization …

A Study Of Design Parameters Of A Road Racing Endurance Car, Donald N. Kords

Theses

Analytical methods are presented to assess design parameters and aerodynamic effects on a road racing endurance car design. A six degree of freedom model of the vehicle dynamics was used to determine the design equations and objectives. Some of the more important parameters investigated were vehicle mass and inertia, aerodynamic drag and down force, rolling resistance, center of gravity, cornering capacity and braking performance. The effects of these parameters on the vehicle acceleration, velocity, and lap times were investigated analytically and verified by data obtained by on-board instrumentation. Given nearly identical engine performance from car to car, the aerodynamic parameters, …

Halogenolyses Of Tri-Alkylborane, Qingyi Lu

Theses

None provided.

American Image, Eun-Hee Jeon

Theses

In this thesis, I will describe my deep impressions about "The Image of America" through the eyes of a foreigner. My work is usually an expression of my inner self, my feelings, experiences, concepts, dreams and hopes. An idea or thing is the source of my expression. The purpose of my thesis to present my ideas on this image of America. To project these ideas, I used various metals and design elements such as line, shape, color, and form which offered me a wide range of characteristics. To break though the limitations of color in using metal, I introduced the …

More Than A Record: An Analysis Of The Stylistic Development In W. H. Jackson's Photography, Sarah Beckner

Theses

The enthusiasm that the editors of the Philadelphia Photographer showed for William Henry Jackson's 1872 Yellowstone views reflects the complex level of perception and understanding to which photography had arrived by late midcentury. Although Jackson had been commissioned as official photographer to the Geological Survey of the Territories to gather visual documentation for the survey to be an objective documentarian his photographs simultaneously depicted the artistic beauty of the region and, through their realistic illustration, transported the viewer to the far-away place.

Merging Panchromatic Multispectral Images For Enhanced Image Analysis, Curtis K. Munechika

Theses

This study evaluates several methods that enhance the spatial resolution of multispectral images using a finer resolution panchromatic image. The resultant hybrid, high resolution, multispectral data set has increased visible interpretation and improved classification accuracy, while preserving the radiometry of the original multispectral images. These methods can therefore be applied to create simulated high resolution multispectral data, as well as to enhance image analysis.

Using Drama To Teach Drug Prevention Objectives In The Tenth Grade Language Arts Classroom, Mary Jo Teets

Theses

The primary objectives of this language arts unit were (a) to show that drug prevention objectives could be integrated into the secondary language arts curriculum without taking away time allotted for regular course objectives, and (b) to show that drama was an effective teaching strategy to combine language arts and drug prevention objectives. A secondary objective was to produce a video that could be used as a drug prevention tool with junior high school students. A six day unit which was taught to sixty-two tenth grade students at Grandview R-II High School in Jefferson County, Missouri, centered around producing five …

A New Image, Scott E. Rummler

Theses

This thesis paper is about the development and completion of a series of oil paintings. Some of the images were exhibited at the Bevier Gallery at the Rochester Institute of Technology this Spring, in partial completion of the requirements for the Master of Fine Arts degree. This paper will complete the requirements. The paper will give a chronology of the development of the paintings, beginning with the ideas that preceded the works, and leading through the various stages of their completion. A final section will consist of an artist's statement and will relate my work to some of the dilemmas …

No Guarantees, Barbara J. Tefft

Theses

None provided.

Preparation Of A Bank Of Cloned Genes From The Chromosome Of Agrobacterium Tumefaciens And The Isolation Of Genes Involved In Dna Repair And Genetic Recombination, Geoffrey A. Bartholomeusz

Theses

The virulent property of the Agrobacterium tumefaciens is associated with its tumor inducing (Ti) plasmid. Recent studies on the virulence of this bacterium has shown that genes located on its chromosome also contribute to this property. One such gene is thought to produce a protein that has properties similar to that of the recA protein of E. colt. This thesis outlines the techniques that were used to try and isolate the recA-like gene from the chromosome of the Agrobacterium tumefaciens. All the techniques used in this study are outlined in detail and an explanation given for the choice of each …

Motion In Metal, Lisa Wolk

Theses

None provided.

Garments As Living Sculpture, Cynthia Tokar

Theses

In my thesis of work, I was inspired by the changing seasons as reflected in nature. I chose the four seasons as a theme because I have always been intrigued by the different colors and textures that are reflected by nature in the different seasons. An interest in garments helped me decide how to apply this interest to my thesis. I have chosen to create garments which are both aesthetically and functionally sensitive to our human needs. By producing a variety of techniques and styles, I hope to appeal to clothing wearers everywhere. On October 13, 1989, 1 was flying …

Architecture And Art, David A. Baird

Theses

None provided.

Body Ornamentation, Barbara Heinrich

Theses

None provided.

The Influence Of The Position Of A Color Control Bar On A Form When Determining The Most Appropriate Location To Measure Variability In Solid Ink Density And Dot Gain Of A Printed Product, Kevin B. Leines

Theses

This study proposed to determine the most appropriate place to measure variability in dot gain and solid ink density on a form using color control bars. The study developed a form that entailed three GATF/SWOP, 133 line color control bars placed strategically at the lead, middle and trail edges of the sheet. The test set specific density standards to control to, and while these densities were being controlled, samples were obtained that represented a typical press run. Each of the control bar set-ups was treated as a separate press run, allowing the press operator to change the set densities to …

A Study Of The Accuracy Of Reproduction Of Measured Photography: A Method To Equate The Tonal Range Of The Color Transparency To The Tonal Of The Photomechanical Reproduction, Michael Grant Scala

Theses

The density range of a color transparency greatly exceeds the density range capacity of reproductions with ink on paper. It is therfore necessary to perform tone compression. Traditionally, tone compression is accomplished by the color separator and involves subjective decisions without input from the photographer. Tone reproduction of the final image is a result of image manipulation by different people in production who are not in communication with each other. Consequently, image quality may suffer and important image detail may be lost as a result of improper estimates.

Furniture From The Landscape, Gerard J. Alonzo

Theses

None provided.

Correlation Of Finite Element And Experimental Eigenvectors, Derek J. Krebs

Theses

A technique for correlating a complex structure's finite element eigenvectors with its respective experimental eigenvectors is presented. The technique provides a quantitative comparison of the finite element and experimental eigenvectors by using a reduced finite element mass matrix in a "cross" orthogonality check. Comparisons of two case studies are presented: a thin plate with motion in the Z-direction only and a 3-dimensional table structure with motion in three principal coordinate directions . Along with the orthogonality check, the difference in the eigenvectors is computed and shown graphically. The orthogonality check between the finite element and experimental eigenvectors can serve as …

Design And Analysis Of Movable Boundary Allocation Protocol, Karun Sekhri

Theses

The increasing digital communications traffic will require very high speed networks. The use of high communication speed increases the ratio between end to end propagation delay and the packet transmission time. This increase causes rapid performance deterioration and restricts the utilization of the high system bandwidth in broadcast channel based systems. Using several parallel channels in place of a single channel improves this ratio. For a given system bandwidth the total system capacity is increased by bandwidth division and parallel communication. FTDMA protocols have been suggested for the parallel channel network and these protocols are suitable for different loads. In …

Control Of Stress In Silicon Nitride Thin Films, Ajay Krishnan

Theses

Silicon nitride thin films of varying composition and thickness were deposited on silicon substrates by reactive rf diode sputtering of a silicon target using an argon/nitrogen gas mixture. Film stoichiometry could be controlled by varying the partial pressure of nitrogen, the total sputtering gas pressure and the target rf power. Films with refractive index of 2.01, the value for stoichiometric silicon nitride, could be obtained. Film stress was measured by wafer curvature; refractive index and thickness of deposited films were obtained by ellipsometry and interferometry measurements. The etch rate in buffered HF for films with refractive index 2.05 was 29A/min; …

The Effectiveness Of Computer-Based Training On Management Skills Development, Donna Lisa Leonard

Theses

This paper evaluates the impact of Computer Based Mediums on training in management skills. The research explores current literature and technology developments of training functions in organizations. The paper involves some currently used methods and examines how they apply to the traditional training function. The information source's focus mainly on future trends, professional literature, academic texts, and interviews with professionals in the field of training, Human Resources, and technology. This paper examines the problems as well as the benefits of Computer applied HR and training functions.

The objective of this presentation is to clarify the idea of computerized technology in …

Image Data Compression With Neural Networks, Jianjun Li

Theses

Three efficient image coding schemes, based orb neural networks, have been developed in this thesis: (1) Neural network vector quantization (NNVQ). The main advantage of this new technology is that it can accomplish the complex encoding process much faster than the previous algorithms. Its properties are studied and demonstrated by simulations. (2) A adaptive NNVQ for image sequence coding. Simulation experiments have been carried out with 4 x 4 blocks of pixels from an image sequence consisting of 40 frames. At 0.67 bits/pixel, this scheme achieves good image quality suitable for videoconferencing systems; (3) Neural network prediction. This new prediction …

Single Token Integrated Dama In Multiple Bus Local Networks, Srinivasan Ramadurai

Theses

Multiple-bus local Networks (MBLNs) provide an architecturally simple solutions to serve high-reliability-high capacity local area networks(LAN) applications. Access mechanisms for MBLNs possessing stability and favorable delay characteristics are developed in this thesis. A new technique is proposed that uses a single explicit token to achieve demand assignment multiple access (DAMA) to arbitrate access on all the buses in the system. Analytical model was developed and compared to simulation results that indicates performance improvement in terms of delay characteristics of the system of buses.

Cad/Cam : An Analysis And Application To An Industrial Environment, Kulendu Vyas

Theses

This work is intended to explore details of CAD/CAM techniques and to check its application in medium size industry. To achieve this goal, a thorough study has been carried out on current CAD/CAM techniques, keeping in mind it's requirements, source and application, considering both the hardware and software side of it. To check application of CAD/CAM in an industrial environment, Schering Plough corporation was chosen as a subject. The main theme behind this application to the Schering Corp. was to develop the CAD/CAM capability within company, in order to gain better control over the quality and productivity, and to reduce …

Mathematical Modeling And Computer Simulations Of Biodenitrification In Batch And Sequencing Batch Reactors, Sugata Sanyal

Theses

Mathematical models have been derived for describing biodegradation of ni¬trate and nitrite in an anaerobic environment. Monod model for nitrate and Andrews model for nitrite were used as kinetic models. Experimental data from literature suggest that nitrate is not an inhibitory substance, while nitrite is not only inhibitory but it may also have a toxic effect on the biomass. The models were brought in dimensionless form in order to reduce the number of parame¬ters. Biodegradation was mathematically described for a batch, and a sequencing batch mode of operation. Computer programs were developed for numerically simulating the process. Some of the …

Delay Improvement And Reliability Enhancement In A Cim-Based Factory Network, Vimalkumar Upadhya

Theses

Today, Computer-Integrated Manufacturing (CIM) refers to the integration of computer-controlled factory floor devices with engineering design and plant management computers. In general, there is a need for more efficient factory networks than are currently available. To this end, it is essential to investigate new network architectures and study their performance.

A number of CIM networks are analyzed in this thesis, and a new CIM network architecture is proposed. The throughput and delay characteristics of all these network architectures are derived from their respective simulation models. The results indicate that the proposed CIM network architecture has superior performance characteristics, compared to …

Performance Evaluation And Comparison Of Ordinary, Adaptive And Exhaustive Service In The Token Ring Network, Darshakkumar J. Patel

Theses

In the token ring network different types of services gives different delay characteristics. Results to date have shown that in asymmetric traffic, exhaustive service gives more delay to lightly loaded stations where ordinary service wastes time in circulating the token after each transmission. In general, there is a need for more efficient service, which is compromised between ordinary and exhaustive service.

Ordinary and exhaustive service are analyzed in this thesis, and a new service, adaptive service, is proposed. By using timer and counter, adaptive service dynamically changes token holding time at the station. Different types of delay characteristics are derived …

X-Ray Powder Diffraction, Scanning Electron Microscopy And Energy Dispersive Spectroscopy Studies Of Soil Containing Chromium Immobilized By Microwave Treatment, Nagui Ibrahim

Theses

The orientation of soil contaminants such as chromium is altered during microwave heating. The SEM and EDS were utilized in the study. The nature of the orientation is related to the heating time. This results in immobilizing the contaminant in leaching tests. The non-leachibility was related to the reactivity of the chromium salt with the soil hematite phase (Fe2O3) during the microwaving. This was proved By the X-ray diffraction analysis. The spectrums obtained from 30 and 60 minutes microwaved samples were identical in the crystal phases and were significantly different from the contaminated unheated sample.

An Investigation Of The Dynamics Of Abrasive Waterjet Formation, Md. Ekramul Hasan Khan

Theses

The aim of this research was to investigate the jet formation and the jet behavior, as characterized by the velocity field, the force exerted by the jet on a work-piece and the jet geometry. The velocity and force distributions were measured using a laser transit anemometer (LTA) and a piezoelectric force transducer (PFT) respectively for constant water pressure (334.6 MPa) supply. The jet structure and its instantaneous behavior were visualized by the used of high speed filming. LTA and PFT measuring techniques were established and verified. The measurements were performed under different operating conditions. It was found that at a …

A Comparative Study Of Cadmium Uptake By Cells Of Gram-Positive And Gram-Negative Bacteria, Shubhangi Rajan Bhende

Theses

Cadmium uptake by cells of Gram-positive and Gram- negative bacteria was studied. Gram-positive and Gram- negative bacterial cells were separated from activated sludge collected from the Parsippany Troy Hills Water Pollution Control Plant (NJ) by isolating them on agar plates. These were grown separately and used for uptake experiments.

Gram-positive bacterial cells showed 17% more uptake of cadmium as compared to Gram-negative cells at 30°C and pH 6.6. More than 95% of the total cadmium removal from the solution was observed during first 5 min. of cell-metal contact time. In case of Gram-positive bacteria cadmium uptake decreased by 5-10% after …