Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Theses

Discipline
Institution
Keyword
Publication Year
Publication Type

Articles 5821 - 5850 of 5974

Full-Text Articles in Entire DC Network

Contemporary Religious Graphic Design, Vlasta Paul Mar 1970

Contemporary Religious Graphic Design, Vlasta Paul

Theses

None provided.


An Examination Of The Conclusion Proposed By W.A. Thornton On The "Luminosity And Color Rendering Capability Of White Light", Mary A. Maier Jan 1970

An Examination Of The Conclusion Proposed By W.A. Thornton On The "Luminosity And Color Rendering Capability Of White Light", Mary A. Maier

Theses

A study was recently conducted by W.A. Thornton of Westinghouse Flourescent and Vapor Divisions, on the luminosity and color rendering capability of white light. It is the purpose of this project to investigate the validity of his conclusions. Thornton states that: "The spectral power distribution of white light required to maximize luminous efficiency and the color rendering index is approximated by additive combination of three spectral lines near 450, 540 and 610nm The two wavelength regions near 500 and 580nm are disadvantageous."2


Detection Of Developer By-Products Using The Schlieren Method, Stephen Kelly, Ralph Simon Jan 1970

Detection Of Developer By-Products Using The Schlieren Method, Stephen Kelly, Ralph Simon

Theses

A single-pass schlieren system, utilizing two 14 inch focal length lenses, has been developed for the purpose of demonstrating the feasibility of detecting and recording developer by-product flows from various photographic film/paper-developer combinations. The test samples studied were: Kodak Polycontrast F Paper in Kodak Developer, D-72 and Kodak Kodalith Contact Film in Kodak Developers D-11, Kodalith Super and Kodalith. The apparent amount of detectable flow varied greatly from test sample to test sample, but did not seem to show any significant shift in the pattern due to variations in the exposure conditions on the samples. Differences in the time of …


Deflections Of A Ring Due To Normal Loads Using Energy Method And Stiffness Matrix Method, A.J. Rabinowitz Jan 1970

Deflections Of A Ring Due To Normal Loads Using Energy Method And Stiffness Matrix Method, A.J. Rabinowitz

Theses

Deflections and reactions of a ring of 1.855" mean diameter, fixed at one point, simply supported at another point and loaded normally at an arbitrary point were determined using the energy method and the stiffness matrix method. These results were verified experimentally and it was found that the values of displacements and reactions obtained by the two theoretical methods were within 4.5% and 0.5% respectively of experimental results. When effect of transverse shear was included in the computations done using the energy method it increased the values of deflections by less than 1.5% thus confirming that the effect of transverse …


A Study Of Consumer Acceptance Of A No-Loss Credit Card Verification System, Dean Arlidge Jan 1970

A Study Of Consumer Acceptance Of A No-Loss Credit Card Verification System, Dean Arlidge

Theses

This research study focuses upon Credit Cards and a proposed verification method to reduce the risk of fraudulent use. It is anticipated that the proliferation and growing use of credit cards will require the use of security concepts offering built-in point of use protection that is automatic and reliable. A suggested concept is the use of a combined electronic credit card and a memory device. The proposed verification technique combines a user electronic credit card and memory number along with a simple imprinter which would be operated by the person accepting the credit card. Credit cards have become a widely …


Diffusion Of The Thiosulfate Ion Out Of Photographic Film During Washing, Kenneth Haring Jan 1970

Diffusion Of The Thiosulfate Ion Out Of Photographic Film During Washing, Kenneth Haring

Theses

The thiosulfate ion does not freely diffuse out of a hardened photographic gelatin emulsion. Salts in the washing water displaces the adsorbed thiosulfate ions and allows them to freely diffuse out of the emulsion. The effect of temperature upon the diffusion of the thiosulfate ion is on the order of other diffusion processes. The type and amount of hardening also affects the diffusion of thiosulfate. The diffusion of thiosulfate out of the emulsion is fastest when a non-hardening fixer is used. The use of an alum hardening fixer results in slower diffusion than with formaldehyde prehardening.


An Experiment In The Use Of Graphics For Musical Interpretation, James Van De Car Jan 1970

An Experiment In The Use Of Graphics For Musical Interpretation, James Van De Car

Theses

Not provided.


A Study Of The Holy As An Aesthetic Phenomenon, Thomas Raterman Jan 1970

A Study Of The Holy As An Aesthetic Phenomenon, Thomas Raterman

Theses

Not provided.


Stoneware And Porcelain Fireplaces, Rick E. Flannery Oct 1969

Stoneware And Porcelain Fireplaces, Rick E. Flannery

Theses

None provided.


Hypothetical Liquid Fugacity Coefficients, Douglas F. Patterson Jun 1969

Hypothetical Liquid Fugacity Coefficients, Douglas F. Patterson

Theses

The object of this thesis was to derive values of the hypothetical liquid fugacity coefficient of carbon dioxide for various temperatures and pressures. Most of the temperatures studied were above the critical temperature of carbon dioxide and thus carbon dioxide could not truly exist as a pure liquid. Hence the prefix "hypothetical" was used to acknowledge this apparent discrepancy. Carbon dioxide was purposely chosen for this reason. Also,the necessary data for carbon dioxide were generally more available than for any other normally gaseous solute.

The hypothetical liquid fugacity coefficients were derived from the published binary vapor-liquid equilibrium data of carbon …


The Effect Of Flow Rate And L/D Ratio On The Frequency Response Of Water Fluidized Beds, Arnold Ludke Jun 1969

The Effect Of Flow Rate And L/D Ratio On The Frequency Response Of Water Fluidized Beds, Arnold Ludke

Theses

In this investigation, the dynamics of a water fluidized bed with varying L/D ratio and flow rate were analyzed both theoretically and experimentally, and the results of the two were compared.

The theoretical analysis was based on the standard method of Laplace transforms and transfer function synthesis.

The experimental investigation was conducted using standard frequency response techniques.

The mathematical model used consisted of a series of non-interacting perfectly mixed cells plus a distance velocity lag.

At low flow rates (3 to 6 times minimum fluidization velocity) the experimental data (in the form of Bode plots) were found to be in …


A New Technique For The Solution Of Free Convection Mass Transfer Boundary Value Problems, James Lewis Putman Jun 1969

A New Technique For The Solution Of Free Convection Mass Transfer Boundary Value Problems, James Lewis Putman

Theses

Free convection mass transfer in boundary layer flow due to density difference in an isothermal model was studied. Previous work was examined and a quasilinearization technique was chosen to linearize the system of nonlinear partial differential equations resulting from the boundary layer continuity, momentum, and diffusion equations. This system of linear ordinary differential equations was solved by a computer program utilizing an iterative Gauss Jordan matrix solution technique. Results are presented and the convergence rate of the variables is plotted for each variable as a function of the distance from the boundary layer.


Correlation Of 1/F Noise With Threshold Drift In Mosfet's, John Peter Rooney Jun 1969

Correlation Of 1/F Noise With Threshold Drift In Mosfet's, John Peter Rooney

Theses

A brief review of the fundamentals of MOSFET's is given. A correlation between threshold drift and surface states is made, with a following correlation between surface states and 1/f noise. It therefore follows that MOSFET's with a high 1/f noise level will drift more than those with a low level of 1/f noise. Experiments were carried out to show this effect, but no clear cut conclusions can be drawn from the experimental work.


Reaction Of Boron Trichloride With Methoxyamine Hydrochloride, Stephen L. Douglass Jun 1969

Reaction Of Boron Trichloride With Methoxyamine Hydrochloride, Stephen L. Douglass

Theses

Boron trichloride and methoxyamine hydrochloride were reacted in refluxing chlorobenzene and again in a refluxing mixture of chlorobenzene and chloroform. Procedures for handling and analyzing samples under anhydrous conditions are discussed. Evidence is given for the formation of B-trichloro-N-trimethoxyborazine in the chlorobenzene/chloroform system.


A Rheological Equation Of State For Blood At Low Shear Rates, Anatoly Dritschilo May 1969

A Rheological Equation Of State For Blood At Low Shear Rates, Anatoly Dritschilo

Theses

In this work a new rheological equation of state is presented and its application to blood is studied. The equation considered is a linear combination of Newtonian and non-Newtonian contributions to the apparent viscosity. The general form of the equation is

 Tij =-(A + Be-1/C|(.5)Δi/j:Δj/i|1/2)Δij

Data from the literature were used to test the equation by generating curves of measured torque (T/L) versus applied shear rate (Ω) that would characterize the behavior of blood at all red cell concentrations and all shear rates in the Gilinson, Dauwalter and Merrill viscometer. The constants for the equation were …


Financing The Nuclear Fuel Requirements Of Public Utilities, Peter A. Lewis May 1969

Financing The Nuclear Fuel Requirements Of Public Utilities, Peter A. Lewis

Theses

A major portion of new electric generating capacity will be nuclear powered. The change to nuclear power will require large outlays of capital not required with conventional fuels to finance nuclear fuel inventories. Nuclear fuel financing requirements are unique because nuclear fuel is not consumed in the same manner as conventional fuels. Financing has not been a problem to date because nuclear fuel can be obtained only through lease from the Atomic Energy Commission. This arrangement will be terminated by June 30, 1973 and from that date on all nuclear fuel must be privately owned. Electric utilities have shown an …


Covered Containers And Serving Pieces, Robert C. Palusky May 1969

Covered Containers And Serving Pieces, Robert C. Palusky

Theses

None provided.


Application Of S-Parameter Techniques To Amplifier Design, Frank Sulak Jan 1969

Application Of S-Parameter Techniques To Amplifier Design, Frank Sulak

Theses

1. Discussion of s parameters and their applicability to high frequency design. 2. Measurement of s parameters and evaluation of stable operating regions. 3. Synthesis of high frequency transistor circuitry with the aid of scattering parameter design equations. 4. Verification of design theory by evaluating the performance of bread-board models.


The Optimization Of A Catalytic Methanol Reactor, Peter Wrampe Jun 1968

The Optimization Of A Catalytic Methanol Reactor, Peter Wrampe

Theses

The development of a computer program which determines the minimum space time of the methanol synthesis reactants is presented. Also, the optimum temperature profile along the catalytic reactor was predicted for a desired conversion at a given operating pressure, feed composition, and catalyst effectiveness factor.

The equilibrium conversion of methanol was determined at various reaction parameters. Rates of reaction were ascertained and maximized with respect to temperature for various conversions and given reaction parameters. The results, along with those obtained when the design equation was numerically integrated, were compared to published data. Equations were established for various sets of published …


Realization Of Transfer Impedances Using Distributed Rc Elements In A Common Ground Linvill Configuration, Walter Woronka Jun 1968

Realization Of Transfer Impedances Using Distributed Rc Elements In A Common Ground Linvill Configuration, Walter Woronka

Theses

One of several synthesis procedures available for the realization of a transfer admittance is that of Linvill. This synthesis procedure employs an active element, a negative impedance converter (NIC), to shift the poles of passive immittance functions from the negative real axis into the complex plane to realize the desired transfer immittance function.

The Linvill synthesis procedure is extended to networks containing cascaded distributed RC elements and the conditions which must be satisfied to realize a transfer impedance using these distributed elements are defined.


The Effect Of Nitrilotriacetic Acid Upon The Biodegradability Of Linear Alkyl Benzene Sulfonate, John D. Mckenna Jun 1968

The Effect Of Nitrilotriacetic Acid Upon The Biodegradability Of Linear Alkyl Benzene Sulfonate, John D. Mckenna

Theses

The effects of trisodium nitrilotriacetate (SKTA) and sodium tipolyphosphate (STPP) upon the biological degradation of linear alkyl benzene sulfonate (LAS) ware experimentally investigated by the chemical oxygen demand and methylene blue methods. It was found that when STPP was present with LAS, the degradation of the LAS was better than when alone in solution. It was also found that LAS in solution with SN TA was less degradable than LAS alone. The benzene ring of the MS appeared to degrade after most of the linear portion of the chain had already been degraded.


Effect Of Column Diameter On The Frequency Response Of Water Fluidized Beds, Edward C. Maiuro Jun 1968

Effect Of Column Diameter On The Frequency Response Of Water Fluidized Beds, Edward C. Maiuro

Theses

The effect of column diameter on the frequency response of water fluidized beds was investigated.

Studies were made on four columns ranging from four to ten inches in diameter. Water was used to fluidize the beds which consisted of spherical glass beads .0185 inches in diameter. A trace solution of sodium chloride was sinusoidally introduced into the beds. Inlet and outlet concentrations were continuously measured by an electrical conductivity recorder. Separate frequency response tests were conducted on the inlet calmning section in an attempt to obtain the frequency response of this region alone. Results of the tests were expressed as …


The Plasticization Of 4-Methyl-Pentene-1 (Tpx-Rt-D30) Polymer With Petroleum Jelly, Joseph P. Mccann Jun 1968

The Plasticization Of 4-Methyl-Pentene-1 (Tpx-Rt-D30) Polymer With Petroleum Jelly, Joseph P. Mccann

Theses

The properties of TPX-RT-D30 (4-methyl-pentene-1 polymer) have been changed by blending petroleum jelly with the polymer. The polymer was blended in a Brabender apparatus with up to 40% by weight petroleum jelly (P.J.) at 270°C, pressed and quenched in water. Samples were die cut for the various tests. The polymer tensile properties (ASTM-638-64T) showed both a break and yield value in all ratios as compared to only a break value for the TPX-RT polymer. Breaking strength ranged from 4000 psi for pure TPX-RT down to 1000 psi at 40% P.J., with a leveling point of 2000 psi at 15% P.J. …


Evaluation Of An Alphanumeric Target As A Means Of Determining The "Resolution" Of A Photographic Reconnaissance System, Mark Underhill Jun 1968

Evaluation Of An Alphanumeric Target As A Means Of Determining The "Resolution" Of A Photographic Reconnaissance System, Mark Underhill

Theses

This experiment relates three forms of resolution as predictors of recognition and identification of objects that could be of interest in a military photo-reconaissance situation. Of the three forms of resolution, two are based on existing types of resolution target currently used for assesment purposes and the third, being evaluated under this experiment, is based on a Block Letter (alphanumeric) target. The results and conclusions of this experiment will show that at a confidence of 90%, the Block Letter target provides a significantly better resolution value for the prediction of recognition and identification of the type of objects used in …


Environmental Sculptural Furniture And Furnishings, Bobby Falwell Jun 1968

Environmental Sculptural Furniture And Furnishings, Bobby Falwell

Theses

Not Included


A Theoretical Investigation Of Color Correction Masking For The Graphic Arts, Clarence Gutteridge Jr Jun 1968

A Theoretical Investigation Of Color Correction Masking For The Graphic Arts, Clarence Gutteridge Jr

Theses

The theoretical functional relationship between mask density and original red, green, and blue densities has been described for a photomechanical reproduction system. A computational model simulating the reproduction system was derived and programmed on a digital computer. Spectrophotometric curves were used as originals and the needed ink amounts to reproduce these colors were specified by a set of transformation equations. The relationship obtained by regression analysis did not completely agree with conventional masking requirements. The results of this investigation are compared with the negative photographic mask technique to investigate the inadequacies of the photographic process to give adequate masking.


Reliability Considerations For Communication Satellites, Frank Polizzi May 1968

Reliability Considerations For Communication Satellites, Frank Polizzi

Theses

A detailed program covering all phases of reliability for a communication satellite was presented. In long mission programs such as this one, reliability is the prime consideration in assuring a successful accomplishment of the stringent goals set forth. Reliability principles and methods were incorporated in delineating each major task in the program. These principles and methods not only aided the reliability personnel in performing their duties better, but also assisted the design group, manufacturing personnel, and the testing and evaluation group in performing their jobs efficiently by being aware and knowledgeable of reliability engineering.

Various reliability disciplines were imposed, as …


A Study Of The Properties Of The Biconical Antenna, Kurt Frank Hafner Jr. May 1968

A Study Of The Properties Of The Biconical Antenna, Kurt Frank Hafner Jr.

Theses

Expressions are found for the fields produced by TM and TEM modes along a finitely conducting biconical antenna. Expressions are also found for the TM and TEM fileds along a biconical antenna having a lossy dielectric coating. It is shown that the antenna losses produce an anntenuation of the the fields along the antenna. It is found that because there is a dispersion of the fields along the biconical antenna, the attenuation produced by the losses is, in genaral, not characterized by simple exponential.

A solution is obtained for the fields of the TEM wave along a biconical antenna coated …


Photography: A Basic Course For Art Students, Donald Dickinson Jan 1968

Photography: A Basic Course For Art Students, Donald Dickinson

Theses

None provided.


Contemporary Mural For The Entrance Area To The College Of Business, Joseph Schuler Jr Jan 1968

Contemporary Mural For The Entrance Area To The College Of Business, Joseph Schuler Jr

Theses

Not provided.