Digital Commons Network^™

The Painted Portrait, Mary Porter

Theses

Not Included

The Painted Portrait, Mary Porter

Theses

None provided.

Computerized Medical Illustration, Cynthia Duffer

Theses

Not Included

Computer Enhancement Of Real World Photographic Images Using Homomorphic And Linear Filtering, Nitin Sampat

Theses

Digital Image Processing techniques have become increasingly popular in the last few years. Conventional silver halide photography continues to be used by the large amateur market, but not without "imperfect" images. There is almost always a need for enhancement or subsequent improvement after the photograph is made. This study dealt with computer image enhancement of such "imperfect" photographs using homomorphic (non-linear) and linear frequency-domain digital filtering (on a VAX-11/785) and a comparison in effectiveness was determined, using a subjective criteria for image quality. It was found that, in general, linear filtering is to be the preferred method of choice when …

A Study Of Mutispectral Temporal Scene Normalization Using Pseudo-Invariant Features, Applied To Landsat Tm Imagery, William Volchok

Theses

A new technique for performing temporal image normalization using pseudo-invariant features was investigated. The technique was applied to the six reflected spectral band images of the Landsat TM sensors. The temporal normalization of pseudo-invariant features yielded linear normalizing functions for all bands. The errors in the normalization of pseudo-invariant features was determined to be on the order of three digital counts, which was estimated to be equivalent to reflectance errors on the order of one percent reflectance. Temporal normalization of all features in the Landsat scene shows great potential for both quantitative and qualitative temporal change detection.

Reliability Evaluation Of Liquid Crystal Displays Under Accelerated Test Conditions, Ravi Sankar Kalyandrug

Theses

This study has determined the effects of high temperature and humidity on the reliability of liquid crystal dis-plays.

Reliability life testing was done on variety of LCD samples under different operating conditions. All the besting was done under accelerated conditions, including high temperature of 85°C and relative humidity of 70%. A number of failure modes were identified in the long series'of tests.

Among many failure modes such as peeling of seal, degradation of polarizers etc., the most important is the degradation of alignment of liquid crystal molecules. Leakage current measurements were made on all the LCD samples before and after …

A Study Of Parameters Indicating Microbial Activity In Mixed Aerobic Cultures, William Smith

Theses

Mixed liquor suspended solids (MLSS), oxygen uptake rate (OUR) and general dehydrogenase activity, as expressed by the reduction of the electron-acceptor Dye 3-(4',5'-dimethylthiazol-2-yl)-2, 4-diphenyltetra-zolium bromide (MTT), were compared for their ability to measure microbial activity in mixed aerobic cultures. A fourth parameter, specific enzyme activity, was dropped from consideration because of the difficulty of developing a satisfactory experimental technique. Measurement of the parameters was applied to the biodegradation of phenol and o-chlorophenol by activated sludge from a municipal sewage treatment plant, and by two commercially available bacterial preparations.

MLSS, although the most commonly used of the three parameters tested, is …

Microbial Characteristics Of An Industrial Mixed Liquor After Exposure To Phenolic Compounds, Patricia L. Boyle

Theses

The microbial characteristics of a mixed population from the Passaic Valley Sewerage Commissioners (PVSC) Wastewater Treatment Plant in Newark were examined. This plant handles about 250 million gallons per day of mixed sewerage, with a large industrial component. The microbial species were characterized using standard plating techniques, morphology, microscopic observation, and biochemical tests. These characteristics were determined for the fresh liquor, and after successive batch exposure to phenol (100 ppm) and 2-chlorophenol (20 ppm). Predator/prey, gram positive to gram negative bacteria ratios, and the fungi and protozoan populations were also determined. These results were compared with those previously obtained using …

Laminar Flow Through A Porous Annulus With Surface Suction, Stelios C. Nicolaides

Theses

A theoretical investigation was conducted to obtain the velocity, pressure and shear stress distributions for incompressible, steady, fully developed, laminar flow through an annulus, with a uniformly porous inside tube wall. Suction at the walls is a result of the pressure difference across the porous wall.

The continuity equation, momentum equation and the Darcy's law for suction velocity are analysed with an integral method. The resulting differential equations were solved using a numerical technique.

For the same radii ratio, dimensionless inlet pressures on both sides of the porous wall and dimensionless porous resistance, the dimensionless length required to reach zero …

Present Reliability Of Liquid Crystal Display Devices, C. N. Suresh

Theses

The purpose of this Thesis is to study the life of liquid crystal display devices as at present available in the market place. To accomplish this, accelerated tempera-ture conditions at 77°C and 85°C were used.

During the last few years, there has grown a tremendous interest in wide range temperature operating and fast LCDs. It is therefore important to understand how LCDs behave under these conditions.

The reliability of a liquid crystal display is usually measured in terms of a quantative degradation in electrical performance and a degradation in visual appearance. The degradation in visual appear6knce may manifest itself as …

Analysis Of Vehicle Suspension System Subjected To Random Vibration, Shabbir Lokhandwala

Theses

A two dimensional, two degree of freedom vehicle model is studied. A randomly profiled road is assumed to impart hyperbolic distributed stationary vertical random displacements to the front and the rear wheel. A computer program has been developed to evaluate transfer function matrices. The performance characteristic of the vehicle based on the Power Spectral Density of the vertical acceleration as well as the rattle space, for different values of damping factors, are studied.

The Romance And Reality Of Art And Laundry, Susan Blumendale

Theses

None provided.

Semi-Empirical Molecular Orbital Calculations Of The Ground And Excited State Potential Surfaces For Photodissociation Of Pararosaniline Leucocyanide Incorporating Solvent Stabilization, John Westbrook

Theses

The excited state and ground state potential surfaces are calculated for the photoionization of Pararosaniline leucocyanide using MNDO-SCF and INDO-SCF-CI molecular orbital methods. These potential surfaces are corrected for influence of polar media using Onsager reaction field theory and incorporating dipole-dipole interaction. These calculations support a mechanism of photochromism in which photodissociation occurs from the first singlet excited state.

Access Control Models: Authorization Mechanisms For Database Management Systems, Diana Anglero

Theses

None provided.

Neighborhood Aesthetics, Cleveland Mills

Theses

None provided.

Rochester: Documented, Peter Eberlin

Theses

Over a two-year period certain unappreciated, visual and factual aspects of the City of Rochester were systematically documented. These aspects of the City of Rochester consisted of Mobil Gas Stations and their owners, closed gas stations, and new businesses in former gas stations; the City Limits and residents, animals, and other noisemakers existing proximal to the City Limits; places where I had to wait in line; the MEN and WOMEN of City Hall; the dotted lines that separate traffic lanes; and a short, dead-end street that was bull dozed over and left for field. The process of documenting these aspects …

Comparison Of Two Mtf Measurement Methods: Sine-Wave Vs Edge Gradient Analysis, John Cadou

Theses

A comparison of the sine-wave and edge gradient MTF measurement methods, on a photographic black and white film, was performed. A statistical test, a CMT acutance test, and a graphical comparison showed that there was no significant difference between the two measurement methods. This was true for the film processed to have large adjacency effects, as well as for the film processed to have no adjacency effects; however, the agreement was slightly better for the latter process. The research also showed that aligning the midpoints of the edge traces, normalizing the individual edge traces, and then averaging several edge traces …

Toward A New Visual Vocabulary: A Guide To Syntactic Variables In Graphic Design, Craig Malmrose

Theses

None provided.

A Recursive Fractal Design Generator For Dimensions Zero To Two Implemented Within A Two Dimensional Core Graphics Package, Elizabeth Lehmann

Theses

This thesis incorporates the technique developed by Benoit Mandelbrot to describe recursive fractals into an interactive graphics package based on the Core Graphics System (Core) produced by an ACM SIGGRAPH Committee (1977, 1979). The graphics package encompasses simple standard geometric shapes as well as the recursive fractals. To draw those fractals requires knowing both the basic shape or generator, and the points of recursion. These two pieces are acquired through the using of two windows which allow the generator and the points of recursion to be built. Once built, the fractal recursion level is chosen interactively on the main drawing. …

Adaptive Pattern Recognition Of Hand-Written Chinese Characters Using Fourier Transforms Of Projection Profiles, Der-Tsyi Chuang

Theses

None provided.

Pages From My Library, Elizabeth Handley Motlow

Theses

None provided.

Entropus: Entropia Ex Aisthetikos, Gerald Lamarsh

Theses

None provided.

Desk Copy. 1984, Addison Thompson

Theses

None provided.

A Comparative Study Of Secondary Science And Social Studies Teachers' Attitudes And Behaviors Regarding Recycling And Recycling Education, John G. Aubuchon

Theses

The purpose of this study was to investigate secondary science and social studies teachers' attitudes and behaviors regarding solid waste recycling and classroom instruction in recycling, moreover, environmental education. The survey 's population was randomly selected from St. Louis County secondary schools. The study documented the need for control of solid waste through recycling and t he need to educate to improve recycling. It provided an extensive review of the literature on recycling instruction as well as classroom recycling activities and lesson plans.

The study used a 12 item survey-questionnaire to identify groups of teachers with the most interest in …

Ordered Polyesters And Polyester-Sulfones: Aromatic Nucleophilic Substitution Reactions Involving Diaryl Ethers, Linda Hobart

Theses

Synthesis of methyl substituted phenols (via various diazonium salts), to be used as a monomer in the synthesis of ordered polyesters and to study the liquid crystal continuum from monomer-to-oligomer-to-polymer, was attempted. Deblocking of di(methoxyphenyl) terephthalates with sodium ethanethiolate in dimethylformamide resulted in the preferential cleavage of the ester linkage over the alkyl -aromatic ether linkage. A number of cleavage products resulted, depending upon the reaction conditions. 4,4'[sulfonyl bis(ρ-phenylene ether)] dianisole was prepared as a model compound to be used in the ordered poly(ester-sulfone) study. Deblocking with hydrobromic and hydrobromic acid-acetic acid cosolvents was successful. However, deblocking wtih sodium ethanethiolate …

Displaced Vignettes/Memory Trace, Elizabeth Gafarian

Theses

None provided.

Training New Employees In Ecuador's Esmeraldas Oil Refinery, Rodrigo Alfredo Morales

Theses

This thesis comprises an overall review of general methods of training used by two New Jersey oil refineries of similar circumstances to Ecuador's Esmeraldas oil refinery.

The method of research was a survey in the form of a questionnaire. It was sent to the five existing oil refineries across New Jersey. Statewide telephone conversations, and with Ecuadorian personnel executives were made to request pertinent information. Research from current journals, training books, and first hand data from refineries, support the recommendations and the study in general.

The results of the thesis include recommendations as to the most advantageous policies and training …

The Impact Of Microcomputers On Engineering And Technical Management Functions, Salvatore Savino

Theses

The purpose of this study was to investigate the perceptions of managers as to the effect of computers on management functions.

Manager perceptions were determined by using a ratio scale of value ranging between 0 and 100. Findings are based on questionnaire responses of 121 top, middle, and lower managers in 120 firms in the United States.

Several hypotheses were examined in the study relative to (1) perceived computer impact on management levels, (2) perceived computer impact on the traditional functions of management, (3) perceived computer impact on levels and functions of management (interaction).

Support was provided for hypothesis of …

The Catabolism Of Arginine By Lactobacillus Brevis In A Chemostat, Jeanette Carque

Theses

A total of thirty chemostat runs were evaluated for steady state biomass concentration of L. brevis and arginine deiminase activity at dilution rates ranging from 0.022 to 0.1.07 h^-1 for a substrate feed consisting of 1.0% glucose and 0.5% arginine (w/v). Biomass concentration and enzyme activity responses were also evaluated for variations in glucose concentration from 0.05% to 1.5% and variations in arginine concentrations from 0.25% to 1.0% at a constant dilution rate (0.06 h^-1).

The system exhibited multiple steady states for the range of dilution rates from 0.022 to 0.107 h^-1. A steady state …

Cross-Cultural Study Of Maslow's Need Theory Of Motivation, Jitendra N. Mishra

Theses

Abraham H. Maslow's Need Theory of Motivation was subjected to a cross-cultural scrutiny to see if his theory has universal application. It was thus also intended, to make a contribution to his theory since today, global interdependence is no longer a matter of belief, preference or choice. Rather, it is an inescapable reality.

To achieve this goal, an extensive Literature Survey was undertaken. It was found that his theory is more consistent with American value system. Nevertheless, if care is exercised, his theory can be useful in International context too, with some necessary modifications.

This paper is directed to save …