Digital Commons Network^™

An Examination And Evaluation Of Organizational Development Implementation And Its Effects In A Department Of An Institution Of Higher Learning, Duane Jelinek

Theses

None provided.

Theology In Art, Roger Richardson

Theses

None provided.

Design Of A Yig-Tuned Oscillator, Tien Liang Jin

Theses

A technique for designing YIG (yttrium-iron garnet) tuned transistor oscillators, tunable over the range of frequencies from 500 to 950 MHZ, is presented. The approach taken differs appreciably from that used in the design of conventional LC-tuned oscillators. One major difference is that the YIG tuning mechanism is electrically controlled. The YIG tuning element is treated as a single unit and is not resolved into an equivalent LC circuit. Instead, a direct method using reflection coefficients measured at network terminals to characterize various design stages is applied. The transistor is also characterized by reflection and transmission coefficients, i.e., S-parameters. Thus …

Photosolubilization Of Cuprous Bromide, Richard Frisicano, Jeffrey Harris

Theses

A dissolution system called photosolubilization invented in 1964 by R.K. Blake and applied to silver halide was investigated to determine the feasibility of adapting the system from silver to copper. After cuprous bromide was shown to be light sensitive and able to be insolubilized, using a mercaptan ( 2-mercapto-4-phenylthiazole ), many of the parameters affecting this process were determined. The best photosolubilization was achieved using a 1/100 mole ratio of mercaptan to cuprous bromide. Insolubilization improved with increased mercaptan digestion time while pH appeared to have little effect on this mechanism. PH did change final print-out density. Increased sensitivity was …

A Computer Based Analysis Of The Effects Of Rhythm Modification On The Intelligibility Of The Speech Of Hearing And Deaf Subjects, Harry Lang

Theses

The speech of profoundly deaf persons often exhibits acquired unnatural rhythms, or a random pattern of rhythms. Inappropriate pause-time and speech-time durations are common in their speech. Specific rhythm deficiencies include abnormal rate of syllable utterance, improper grouping, poor timing and phrasing of syllables and unnatural stress for accent and emphasis. Assuming that temporal features are fundamental to the naturalness of spoken language, these abnormal timing patterns are often detractive. They may even be important factors in the decreased intelligibility of the speech. This thesis explores the significance of temporal cues in the rhythmic patterns of speech. An analysis-synthesis approach …

Evaluation And Testing Of Color Strength Measuring Methods In The Graphic Arts, Barry Sullivan, Donald Wilkalis

Theses

The term color strength is defined as the hue, saturation, and brightness of an ink in the C.I.E. scheme of color specification. With this definition two color strength measuring methods are evaluated on a common basis. A colorimeter is used to read samples produced with varied ink-film thicknesses and varied ratios of white pigment to sample ink. Colorimetric properties are plotted on a U.C.S. diagram with coordinates modified to include the C.I.E. brightness factor W*. The ink-film thickness method is chosen as the preferred method for determining color strength.

The Effects Of Density And Bleach Concentration On Efficiency And Resolution In Phase Holograms, Mark Gardiner, Dennis Moran

Theses

None provided.

Illuminations, Fred Strebeck

Theses

Not provided.

Effects Of Varying Unsharp Masking And Contrasts In Duplicate Mammographs With Respect To Cancer Detection, Leonard Parker

Theses

This report examines two methods of enhancing a photographic image and applies them to duplicating mammographs. Subtractive unsharp masking, one such method, is a photo-optical edge enhancement technique. The degree of unsharpness is controlled by interspacing between the mammograph and a receiving film while exposing. The other method is optimizing the combination of masking film contrast and duplicating film contrast. Three levels of unsharpness, two levels of mask contrast and two levels of duplicating film contrast were tested. The common objective of this project and mammography in general involves the recognition and diagnosis of breast cancer. Specifically, the experimental objective …

Current Flexible Rotor-Bearing System Balancing Techniques Using Computer Simulation, John Kendig

Theses

As the cost of machinery has risen and the need for dependability, safety and increased performance have in a similar manner increased, the needs of industry for viable flexible rotor balancing techniques has no less increased. Various flexible rotor methods have been advocated for supercritical shafting, but few studies or comparisons have appeared in the open literature. Among the procedures for balancing large and/or high speed (supercritical) rotors are the "N" modal method of Bishop and Gladwell, the "N + B" modal of Federn, the "N" and " + B" simultaneous modal method of Kellenberger, and the influence coefficient method …

Engineering A Primary Waste Treatment Plant, Edwin O. Onwawoma

Theses

This thesis deals with the design and construction of a primary waste treatment plant. The scope of work covered here, includes waste sampling and characterization, process design data gathering, process and mechanical design, cost estimate, and a general discussion of the construction and start-up.

In the development of this work, it is assumed that a decision has been made to build the waste treatment plant, using a known process. Therefore, economic evaluations designed to determine return on investment and selection of a process, will not be discussed. The impact the capital investment associated with the waste treatment facility has on …

Silent Communications: Barbourville, Kentucky, Douglas Rea

Theses

None provided.

The Influence Of The Technologist, Image Size And Image Density On The Visual Measurement Of The Size Of Microimages, Walter Shafer

Theses

None provided.

A Philosophical And Psychological Examination Of Aesthetic Choice, Elaine Castiglione

Theses

None provided.

Effect Of Mixing On Polymerizations In Batch Reactors, John Guy Steenrod

Theses

The effects of mixing on polymerizations in batch reactors are examined theoretically for initiations by thermal decomposition of catalyst and by absorption of ionizing radiation. Mathematical expressions for predicting the first three moments of the dead polymer size distribution are presented. Two extreme mixing states. perfect and no mixing. are considered. It is shown that in batch reactors mixing in any direction in which nonuniform initiations exist increases the polymerization reaction rate and the number average molecular weight, and decreases the weight average and the polydispersity.

Experimentally, the effects of mixing were studied in a solution polymerization system, in a …

Evaluation Of Herington General Integral Test For Vapor-Liquid Equilibrium Data, Raja Gopal Nori

Theses

A new set of general integral tests for the thermodynamic consistency of isothermal and isobaric equilibrium data of binary systems was proposed by E.F.G. Herington.

The systems Benzene-Cyclohexane and Benzene-n-Propanol were examined using Herington integral test-. The data used included sets of data known to be in error. One set was, in effect, at true vapor-liquid equilibrium (the data of literature) but the other data was obtained when the system was inadequately insulated and heated.

Heringtan test showed significantly different estimates for heats of mixing for the cases involved. The best data showed heats of mixing near the theoratical values. …

Sidewise Force Exerted On Slowly Falling Spheres Inside A Circular Cylinder, Gary Mark Greenstein

Theses

Numerical values are provided for the forces that must be applied to a reference sphere to prevent its sidewise motion when two equal-sized spheres settle through a viscous liquid bounded by a cylindrical tube. These values are presented for two independent set of circumstances:

1. - the spheres are translating but not rotating
2. - the spheres are rotating but not translating

Forces have been calculated assuming various distances between the sphere centers and with the line of centers at various angles to the horizontal. The results are discussed for the case where the spheres are both translating and rotating and compared …

Job Satisfaction (An Original Study Of Xerox First Line Managers In The Field Organization), Barth Kelly

Theses

None provided.

The Market In India For Optical Goods, P.S. Bhullar

Theses

None provided.

Reflections, Tana Kellner

Theses

None provided.

The Position Of Women Artists Within The Aesthetic Community, Ann Kalmbach

Theses

None provided.

Laboratory Design For Instruction In Long Distance Communication For The Deaf, George Schieber

Theses

None provided.

Color Photograms, Weston Kemp

Theses

None provided.

Environmental Communications, Lee Green

Theses

None provided.

A Study Of The Vibrational Spectra Of Some Monosubstituted Pyridines, Hussein Ibrahim Abdel-Shafy

Theses

Infrared spectra in the range (4000-250 cm^-1) and Raman spectra in the range (4000-150 cm^-1) of pyridine, 2-, 3- and 4-chloro-, bromo-, and methylpyridines, 2-fluoro-, 2-amino and 4-ethylpyridines have been measured. The spectra, vibration and assignments of the observed frequencies of 2-amino-, and 4-ethylpyridines are presented for the first time. The infrared data for 2-fluoropyridine is combined with the previously reported Raman data of Stephenson and Voelz to allow complete vibrational assignments for this compound for the first time. Frequency assignments for the other molecules are re-examined and where necessary changes and/or additions in frequency assignments …

Rheo-Optical Properties Of Polyisobutylene, Russell B. Biss

Theses

This study presents quantitative experimental data on the various stress-optical characteristics of polymer liquids, specifically, polyisobutylene. Through the use of a concentric cylinder rheogoniometer and a rotational viscometer, the temperature effects of a newtonian polyisobutylene liquid. was studied and was found to have a stress-optical coefficient independent of shear stress and minor temperature changes. The experiments confirm that the birefringence is a known function of the extinction angle and the shear stress. Various polyisobutylene liquids were used in a simple flow device to observe the birefringence in the 1-3 plane and the 2-3 plane. The results indicate that the 1-3 …

A Study Of An Adiabatic Tubular Reactor For The Multiple Chlorination Of Methane, Richard L. Braun

Theses

A computer program has been developed which simulates the multiple chlorination of methane in an adiabatic, tubular reactor. Euler's method is used to approximate the solutions of the programs differential equations.

The program is designed to determine the amount of an inert diluent required in the feed stream to attain some specified conversion of methane in a safe and efficient temperature range. Particular emphasis is put on determining the amount of diluent required to attain 98% conversion of methane at an outlet temperature of 723°K. The program also determines the reactor volume necessary to achieve the specified conversion, and the …

The Study On The Soot Formation Of Hydrocarbon Flames, Yih-Jian Wu

Theses

Carbon formation during the quenching of low-pressure premixed hydrocarbon flames was studied using rapid-scanning optical and mass spectroscopy. Experimental techniques were developed and it was found that the tendency to form soot was a function of the hydrocarbon chain length. These results are relevant to the design of restartable space engines in which the use of hydrocarbon fuels is contemplated because the formation of soot in space will result in the formation of a shroud around the spacecraft which will adversely affect sensing by optical means.

Solvents Screening For Hydrocarbons Separation Of Close Molar Volumes, Dilip K. Kapasi

Theses

The approximate physical model for solute-solvent inter?actions presented by J, M, Prausnitz and R, Anderson¹ is briefly discussed, Applicability of Weimer, Prausnitz³ and Helpinstill, Van Winkle⁷ models is investigated using experimental values of activity coefficients for C₅ hydrocarbons in 13 solvents including one nonpolar and 12 polar solvents. Independent correlations, based on our experimental values at 45°C for normal and isopentane have been developed. Although the required thermodynamic properties are obtained through a comparative analysis of all the available and estimated methods, dependable values of activity coefficients for Isopentane and 1-Pentene could not be obtained through …

Optimal Performance Of Equilibrium Parametric Pumps, Joseph A. Manganaro

Theses

An examination of the conditions required to obtain the optimal performance of semicontinuous and continuous parametric pumps, defined by the achieving of the maximum possible solute free product for a given column height, was undertaken. The model system sodium nitrate ? water on an ion retardation resin adsorbate was employed. Equations defining maximum values of certain important parameters such as the bottom product flow rate and reservoir displacement rate were developed by extending previous theories of parametric pumping. Experimental runs were carried out using parameters whose values were both less than and greater than the maximum values predicted for optimal …