Digital Commons Network^™

Steady State And Dynamic Performance Of Anisotropic Reluctance Motor, S. Chandrasekhara Rao

Theses

The paper deals with a special type of reluctance motor called Anisotropic rotor reluctance motor. As the name implies, advantage is taken of the internal anisotropy of the rotor magnetic structure. Axially laminated grain oriented silicon steel is used in the rotor. This unconventional configuration of assembly of rotor laminations results in a high ratio of direct axis to quadrature axis reluctance. Compared to the conventional reluctance motor, pull out torque of more than three times and a power factor as high as in an induction motor is obtained. Several motors of ratings up to 60 HP. were built and …

Reactions Of Perchloro-1,2-Dimethylene Cyclobutane With Amines, Robert James Smith

Theses

Perchloro-1,2-dimethylene cyclobutane was reacted with primary amines forming cyclic amidinium salts. Their structures were elucidated by the performance of various spectral analyses.

The Formulation Of A Woodworking Studio, D. Hunter Kariher

Theses

None provided.

Master's Thesis, Susan Childs

Theses

None provided.

The Unified Figure/Ground Relationship, Christopher Baker

Theses

None provided.

Wood-Working Curriculum Proposal, Thomas Lacagnina

Theses

Not Included

A Comparison Of Phenidone Determinations In Photographic P.Q. Developers, Ernest Dankert Jr

Theses

Five methods for determining Phenidone in Phenidone-hydroquinone were investigated with aspect to accuracy, precision, and time required to perform the analysis. The methods include ultraviolet spectroscopy, colorimetric estimation, and cerimetric titrations. A cerimetric analysis was found to have the greatest precision, a 7% error at the 95% confidence level. All analyses required approximately the same time to complete. Each analysis allowed the accuracy to be adjusted, i0 compensate for operator techniques

The Magnificent American, Stanley Feingold

Theses

None provided.

Two Studies In Animation, Irene Feingold

Theses

None provided.

An Experimental Study Of Parametric Pump, Khalid Omar Ranginwala

Theses

In this research for Master's Project, the possibility for separation of glucose and fructose by parametric pumping was investigated. In this research activated carbon was used as adsorbent. First Langmuir's isotherms for glucose and fructose were experimentally found. These results were utilized in the thermal parametric pumping. The pump was run semicontinuously. Parametric pumping was also carried out with KCl +H₂O solution using a resin as adsorbent, and the 'b' value of KCl was found.

A Study Of Latent Image Fading In So-343, Mitchell Glasser

Theses

Experimental evidence indicates that a high intensity, short duration exposure produces surface image exclusively in this emulsion. The ensuing fading was shown not to be caused by internal migration of the latent image. The high intensity exposure produced a massive amount of sub image nuclei which could subsequently be rendered developable by a low intensity post exposure. This latensification failed to achieve an improvement in image stability, in that the amount of fading was shown to be solely a function of the density of the fresh exposure. It was hypothesized that although this treatment did raise some grains from an …

Analog Control Of Sampled-Data Systems, Harry Trietley

Theses

The use of conventional analog controllers to produce a one- quarter -decay transient response in sampled output control systems is studied. In particular, the control of processes which can be adequately represented by a first order lag plus deadtime is analyzed, where the process deadtime does not exceed the sampling interval. The process output is measured by a sample-and-hold device, which introduces additional deadtime equal to the sampling interval. This extends previous work, which considered only the plant delay. Proportional and proportional- integral (two-mode) controllers are studied. Controller settings yielding a one-quarter-decay transient response are calculated using z-transform theory. Plant …

Investigation Of The Relation Between The Adjacency Effects At An Edge Produced By Nitrogen-Burst And Viscous Processing, Richard Hooker

Theses

Adjacency effects in nitrogen-burst and viscous processing of Eastman Fine Grain Release Positive Film, Type 5302, (in well-buffered Phenidone-hydroquinone developers) were measured by edge exposure microdensitometer scans. A well-buffered basic formulation containing 10 grams of hydroquinone and 1 gram of Phenidone at a pH of 10.5 was chosen for study. Sensitivity to pH and concentration level was tested by independently reducing the developing-agent concentrations by 30 percent and 50 percent, and the pH to 10.2. Chemically equivalent formulations for viscous development were produced by thickening the developer solutions with sodium carboxymethyl cellulose. No significant adjacency effects were observed for nitrogen-burst …

Doing Portraits On The Street Or I Remember Goya, Robert Clarke

Theses

None provided.

A Near Time Optimal Adaptive Control Algorithm For Second Order Systems, Carlton Warren

Theses

During the past few years, many non-linear and/or adaptive control algorithms have been developed for industrial processes. Many have been rather complex schemes either requiring or specifically developed for an on line digital computer. As an alternative to such systems, at least on low order plants, the development of a near time optimal, adaptive control algorithm is proposed. This rule must encompass a significantly large group of the systems to be encountered and yet be simple enough for hardware implementation as a single loop controller. The author's attention is confined primarily to systems whose transfer functions may be approximated by …

Development And Testing Of A Non-Recording Microdensitometer, Charles Biss, Randy Defrank

Theses

A need exists in American industry for a small-area reading densitometer. The object of this effort was to examine optical designs proposed by Photographic Sciences Corporation, to formulate a reasonable system design, and to work this design into a prototype instrument. After testing several optical designs, one was chosen that proved its feasibility on the micro-optical bench. A case was designed for the unit and the optical system made of microscope components was set into place. A photomultiplier tube and amplifier were incorporated as the photometric measuring device. The system was tested and proved to exhibit the qualities of a …

The Setting Up Of An Introductory Woodworking Course And Basic Shop, H. Wayne Raab

Theses

Not provided.

Automatic Color, Gopal Srivastava

Theses

Not listed.

A Guide To The Media Center, Jeffrey Hermann

Theses

Not provided.

Effects Of Exposure Changes On Perception Of Detail In Radiography, Warren Meyers Shepard

Theses

Voltage and magnification are the variables of exposure used to investigate the effects upon the detection of lesions on lung tissue of a phantom. Analysis by percent correctness and ANOVA indicate that the voltage and magnification for the levels investigated had no significant effect upon detection accuracy. ROC analysis of the data also show no significant increase in detectability attributed to the variables investigated, The ROC evaluation does indicate a slight increase in detectability of the simulated lesions, while the percent correctness analysis does not. This difference may be due to the bias of the observers and removed by the …

Multispectral Techniques Applied To Photomicrography, William Richard Mueller

Theses

Based upon an objects absorbtion and reflection characteristics to varying amounts of radiation, a series of selective wavelength band exposures were made for color separation of a microscopic specimen. The exposures axe made to record the specimens characteristic transmission or reflection patterns as a visible density value. The exposeures were made in a overlapping band width manner. The exposures were in the blue, green, and red regions of the spectrum. The resultant negetives were printed on Polycontrast paper using filter No. 2. The main purpose of the experiment was the design of a photographic system to remove the biological step …

Development And Applications Of A Quadratic Isoparametric Finite Element For Axisymmetric Stress And Deflection Analysis, F. X. Janucik

Theses

The theory and computer program for an axisymmetric finite element for static stress and deflection analysis is presented. The element is an eight noded isoparametric quadrilateral based on the displacement method which is capable of representing quadratic variation of element boundaries and displacements. Element stiffness properties are developed for linear elastic small displacement theory using homogeneous isotropic material. Test cases are compared with theoretical solutions from the theory of elasticity to identify program capabilities and limitations. Ability to analyse axisymmetric problems and to represent curved element boundaries has been demonstrated. Example problems including a cylindrical pressure vessel, a disk of …

Measurement Of Volume Scattering Functions In Turbid Water And Its Correlation With Mtf Degradation, Richard Hart, Michael Mcdonald

Theses

Scattering of light in turbid water is a major source of image degradation. The intention of this experiment was to construct a small angle scattering meter and measure the volume scattering functions for specific turbid conditions. These experimentally derived volume scattering functions were used to correlate a mathematical modulation transfer function derivation with previously measured modulation transfer functions for a specific turbid medium. Due to design shortcomings, errors were produced in the production of the volume scattering functions. This produced a lack of correlation between our mathematically derived MTF's and those measured in the past. The validity of the mathematical …

A Unified Matrix Formulation For The Unbalance Response Of A Flexible Rotor In Fluid-Film Bearings, Charles Thomas Jr

Theses

An analysis and a computer program for determining the steady-state response of a general rotor-bearing system, based on the concept of a dynamic stiffness matrix, are presented in this thesis. The rotor is idealized as an axial assemblage of beam elements that have continuous mass and isotropic, elastic properties. These properties are developed by using the Bernoulli-Euler beam theory equations to form the dynamic stiffness matrix. Transverse shear effects are neglected. Gyroscopic coupling effects, asymmetric linearized bearing properties, and unbalanced loading are represented as optional end effects on the beam elements. The development necessitated the use of complex variables to …

Relationship Between Image Size And Tone Reproduction Curve, Kenneth Hansen, Robert Pisa

Theses

This project attempts to find a relationship between preferred tone reproduction and image size. Photographic prints with different tone reproduction characteristics were made. The differences were very small but just noticeable. Prints were made in three different sizes and compared to a standard size print by a paired comparison method. Analysis showed that there was no tone reproduction difference in the preferred prints of both smaller and larger sizes.

Modification Of The Inprocess Infrared Densitometer, Ernest Balch, Jeffrey Chan

Theses

A model of an infrared scanning densitometer was constructed using the basic designs developed by Hisler and Casinelli in their 1970 research work, and by Beaupre and Jasper in their 1971 research work, plus several new ideas which greatly improved the reliability and usefulness of the machine. Among the changes were: use of an infrared sensitive photomultiplier tube on recommendation of Hisler and Caslnelli; Z axis modulation for oscilloscope display, a new idea; and addition of a diffuser to illuminate the sample to provide better correlation between wet and dry densities, on recommendation of Dr. Schumann.

Separation Of Gas Mixtures Via Batch Parametric Pumping : A Theoretical Study, Jose G. Lopez

Theses

An equilibrium plug?flow model, for the batch isothermal separation of a binary gas mixture in a pressure changing parametric pump, was investigated for the system propane?argon on carbon, with the aid of a G. E. Pack 4020 computer. Separation factors comparable to a temperature changing parametric pump are predicted by the model. A change in pressure of the gas mixture may be carried out very rapidly, compared with a temperature change of similar magnitude. The effects of temperature, pressure, concentration, and penetration are discussed.

Papillomas, Warts, And Related Neoplasms: Forms Of Generative Cancers, Jonathan Atkin

Theses

None provided.

The Effect Of Variation In The Ratio Of Specific Heats With Temperature And Pressure On Horsepower Requirements Of Reciprocating Compressors, Selim Piskin

Theses

The expansion and compression of fluids is discussed in relation to the design of reciprocating compressors. As part of this thesis, the design equations for reciprocating compressors are developed for both ideal and reel gases.

The resulting design equations contain, as one of the parameters, the ratio of the specific heats. Using published componential specific heat data, a correlation was developed relating the dependence of the ratio of specific heat on temperature and pressure for the nore common gases. These correlations were developed so as to be compatible with the compressor design equation and to provide rapid evaluation of the …

Rubbery Acrylic Polymer Adhesives, Steven Walter

Theses

This study shows how rubbery acrylic polymer adhesives can be used to adhere rubber substrates to each other. Two substrate rubber compounds were used. A styrene-butadiene copolymer and a styrene-acrylonitrile copolymer. The adhesives were homopolymers based on polybutyl acrylate and poly2-ethyl hexyl acrylate.

Two reference standards were used. The first was commercial rubber based, solvent cements. The second was commercial acrylic solution polymers. All experimental work was compared to these standards. An attempt was made to optimize the adhesive components, as well as the adhesive application procedures and curing conditions.

A primer coating consisting of polymer, monomer, and catalyst was …