Digital Commons Network^™

Digital Executive Control Of A Hybrid Computing System, Glenn Kauffman

Theses

This is a paper describing an interface system integrating an HP 2116B digital computer and an EAI TR-48' analog computer. The interface system provides the digital computer with the capability to control the analog computer operational modes, to read the output signals on the analog computer amplifiers and coefficient settings of the potentiometers, and to control and sense numerous interface trunks.

Automatic Design Of Switching Networks, Darryl Dhein

Theses

This thesis develops a method for automatically selecting an optimum set of prime implicants of a Boolean function. The optimization algorithm is based on a minimum cost of mechanization of the simplified function. A FORTRAN IV computer program to implement this approach was written and is included as part of this thesis. This program was developed within the framework of an overall theory for the automation of the design of switching networks. A programing structure as well as the theory for the automation of design is given. Also included is an outline of further areas of study which would be …

Print Quality Measurement: The Application Of Instrumental Analysis To Graphic Arts, John Kuder

Theses

Instrumental analysis is a powerful tool when evaluation of print quality is desired. Traces of prints were obtained "by scanning them with a microdensitometer equipped with a reflection reading head attachment. The ability of newsprint to produce a good print under specified printing conditions is evaluated by measuring the uniformity of the contrast between dots and backgrounds, as well as the uniformity of the dots. A method of evaluation for these scans is formulated and discussed. Conclusions and reccomendations are made.

A Photomicrographic Method For The Detection Of Oxygen Content In The Hemoglobin Of The Red Blood Cell, Bruce Martin Levine, Craig Sager

Theses

Previous attempts at photographing the hemoglobin in the red blood cells have been confined to the making of two separate images of the same blood sample; one image is recorded using a wavelength band in the isobestic point region of the spectral distribution of oxygenated and reduced blood, and the other image is made using a wavelength band of radiation in the area of greatest difference in absorption between the two blood states. The method described here attempts to obtain a measurement of oxygenation by means of only one exposure using both regions of wavelengths simultaneously. The response is the …

Design And Construction Of A Standard Planetary Microfilming Camera Target Array (Pmta), Bruno Glavich, Richard Johnson

Theses

After researching the current applications, problems, and evaluation techniques of planetary microfilming systems, the authors designed and constructed a standard Planetary Microfilming camera Target Array (PMTA) that essentially satisfied three criteria, i.e. 1) inexpensive to produce, 2) simple to use, and 3) satisfies testing criteria for both microfilming equipment manufacture and user. Ten evaluation parameters were incorporated in two targets PMTA-I and PMTA-II. PMTA-I includes tests for 1) resolution, 2) readability of printed matter, 3) reduction ratio, 4) exposure and processing, 5) full field visual distortion, and finally 6) corner visual distortion. PMTA-II was designed to evaluate, 7) quatitative distortion, …

Design, Fabrication And Evaluation Of A Monochromatic Sensitometer, Jay Johnson

Theses

An intensity scale monochromatic sensitometer was constructed using a Bausch and Lomb single-pass diffraction-grating monochromator as the dispersing device. A ribbon-filament tungsten lamp was used to supply the radiant energy to the monochromator. The instrument was calibrated 2 radiometrically and was shown to have a maximum irradiance of 10 ergs/cm 2 2 at 425 nm, 43.7 ergs/cm at 550 nm and 26.1 ergs/cm at 700 nm. Exposure is accomplished by transporting the film and step tablet past a slit at a constant velocity. Several film velocities and slit widths are available to produce exposure times ranging from 0.003 to 2.0 …

A Study Of Latent Image Formation In Photographic Emulsions Subjected To A Combination Of High And Low Intensity Exposures, George Macmanus

Theses

None provided.

Dielectric Properties Of Atactic And Isotactic Polystyrene, Thaddeus F. Kroplinski

Theses

The purpose of this investigation was to determine the dielectric constant and dissipation factor of atactic and isotactic polystyrene at 25°C and at frequencies of 0.1, 1.0, 10, and 100 kilocycles per second. In addition, the effects of molecular weight and crystallinity on the dielectric properties of polystyrene mos also studied.

Polystyrene slabs of uniform thickness mere prepared by molding the polymer under heat and pressure. The isotactic polystyrene slabs Imre annealed at 175°g for various lengths of time to achieve varying degrees of crystallinity.

The molded polystyrene slabs were fitted with circular aluminum foil electrodes to form a three …

A Simple Method For Liquid Enthalpy Departure Calculations, Ching-Lin Chien

Theses

The reduced equation of state for gases and liquids developed by Benson and Golding in 1951 is modified and used to calculate liquid enthalpy departures for saturated pure substances and mixtures. The temperature-independent coefficients in the modified equation are determined from critical properties and experimental liquid enthalpies at the boiling point and at the critical point. The results of the proposed method are compared with those predicted with the modified Redlich-Kwong equation of state by Joffe and Zudkevitch.

Agitation Of Dilatant Fluids, Vijay Jang Datta

Theses

No abstract provided.

Black Faces And Their Emotions, Margaret Anderson

Theses

None provided.

Analysis Of Color Errors And Their Sources In A Commercial Color Reproduction Process, Sakda Siriphan

Theses

To analyze color errors and their sources in the color reproduction process, the reproduction is visually evaluated and compared visually with the original scene color scales and also with the original transparency viewed on a variable brightness illuminator (D5000) with an opaque reflective white surround. Graphs (press plate curves, single color proofs and END of single color proofs) have been added to the Kodak tone-reproduction diagram (1960) to obtain more complete steps in the analysis of the tone-reproduction and the color balance. The GATF Evaluation Method of Ink Color is tested and the GARC colorimetric system, which is a modified …

Prediction Of The Physical Properties Of Pure Gases And Liquids, James L. Filson

Theses

A computer programmed system for the estimation of physical properties of pure compounds from minimum data input on compound type and structure was developed for both gas and liquid phase conditions.

The properties of the gas phase which can be obtained include:

• gas volume
• compressibility
• normal boiling point
• volume at the normal boiling point
• critical temperature, pressure, volume compressibility
• vapor pressure
• Riedel factor
• acentric factor
• ideal heat capacity
• heat capacity at constant pressure
• heat capacity at constant volume
• dipole moment
• intermolecular distance
• hard sphere volume
• viscosity at low pressure
• viscosity at elevated pressure
• thermal conductivity at low pressure
• thermal conductivity …

A Nomograph For The Rapid Solution Of The Arrhenius Equation, Joseph John Lamont

Theses

There are presently no calculational aids for the rapid computation of the Arrhenius parameters of the chemical reaction rate equations.

Two nomographs for solving the Arrhenius equation for the relative reaction rate constants at different temperatures, and for computing activation energies and frequency factors are presented. Several graphs and tables of the relative reaction rate constant as a function of activation energy and temperature are also presented.

The nomographs, graphs and tables can be used, singly or combined, in lieu of numerical calculation for the solution for Arrhenius parameters, or the computation of rate constants.

A computer program included in …

A Simulation Model Capable Of Performing The Calculations Involved In Defining A Crude Preheat Train, Robert G. Parker

Theses

A simulation model has been developed for a system of ex changers to preheat the feed to a crude distillation unit. In conjunction, a Fortran program for the performance of the model calculations by digital computer was written. Two types of preheat system were simulated, a single train system and a split (or parallel) train system. A number of features were included in the program for flexibility and versatility. A particular effort was made to have the model represent as economical a preheat system as possible.

The model program was used to obtain computer-calculated results for both single-train and split-train …

Incineration Of Solid/Liquid Human Waste, Theodore Joseph Wayne

Theses

This thesis encompasses the design criteria required to produce an effective incineration system for the disposal of solid/liquid human waste. Coupled with the overall design parameters is an investigation of the chemical decomposition of the waste during the incineration process, odor treatment and control, and the physiological effects on the human body due to the inhalation of the toxic gases given off during the combustion of human waste.

The variables involved in the combustion process are studied and equations presented that relate the combustion variables of flame temperature, residence time and air requirements. These equations are tested based upon published …

Teilhard De Chardin's Mass On The World, Mary Stover

Theses

None provided.

Effects Of Packing And Changes Of Squeeze Pressure On Image Sharpness When Printing With Compressible And Noncompressible Blankets, Walter Twarosch

Theses

None provided.

Design Of A Tactile Vocoder, Roger Carr

Theses

A tactile vocoder is designed for the feedback of acoustic cues for detection by the sense of touch. Design objectives based on speech signal properties are generated. An existing spectrum channel vocoder is the starting point of the design. The follow-on modulation stage after the filter channels of the spectrum channel vocoder is built up in a breadboard model and tested. The transfer function of the modulation stage has an input dynamic range of 68 decibels, being linear over 38 decibels of this range. The complete breadboard model using one of the filter channels has an input dynamic range of …

Computer Application Of Historical Data, Raymond Wright

Theses

None provided.

An Audio Oscillator Triggering Circuit For The Eg&G 501 High Speed Stroboscope; With Integrated Digital Timing, Boisey Collins

Theses

A timing generator was designed and built for an EG&G 501 High Speed Stroboscope. The generator delivers a burst of one, two, four or eight pulses at a selected repetition rate from .5HZ to 20KHZ; upon initiation by a start signal. An Unijunction Transistor ( UJT ) oscillator provides the basic repetition rate and Integrated Circuit ( IC ) Digital Logic is used to count and gate the output pulses. The circuit diagrams and construction details are given.

Design Considerations For A Recording Instrument To Be Used In Conjunction With R.I.T.'S Radio Astronomy System, Robert D. Harned

Theses

Recording of radio emission from the sun can adequately be accomplished using a magnetic tape system. Magnetic tape's advantages over other recording systems include higher information capacity, low cost, and ease of operation.

Modifications of the tape deck include the recording motor speed controlled by a SCR circuit, a suitable filtering device for the SCR, and an external fan for cooling the circuit and motor.

Careful consideration has been given to the frequency response and signal-to-noise ratio as it affects the accuracy of the recording.

The Reaction Of O-Propylphenyl Azide With Di-N-Propylamine, Seyed Ziaeddin Razavi

Theses

Nitration of n-propylbenzene resulted in O-nitro-n-propylbenzene. Reduction of this compound gave o-n-Propylphenyl azide was prepared by diazotization of o-n-propylaniline followed by treatment with sodium azide.

Photolysis of o-n-propylphenyl azide in di-n-propyl-amine yielded two new azepines, 2-di-n-propylamino-3n-propyl-3H azepine and 2-di-n-propylamino-7-n-propy1-7H-azepine. Their structures were assigned on the basis of their physical properties (i.e. I.R., U.V., N.M.R., N.S. and elemental analysis).

Photolysis of the azide at room temperature gave 26.9% o-n-propylaniline and 4.3% 2-di-n-propylamino-3-n-propy1-3H azepine, but when the photolysis was carried out in the presence of the triplet photosensitizer (xanthen-9-one) the yield of o-n-propylaniline was increased to 34.6% and the yield of 2-di-n-propylamino-3n-propy1-3H-azepine …

A New Technique For Steady State And Transient Analyses Of Incompressible Flow Networks, George V. Catanzaro

Theses

A new technique for the calculation of the transient or the steady-state mass flow rate and pressure distribution in incompressible flow networks is presented. Employing the matrix method of network analysis, the nodal continuity and branch momentum equations are solved simultaneously to obtain explicit relations giving the unknown nodal pressures and branch mass flow rates. In this manner, the transient or the steady-state behavior of incompressible flow networks with arbitrary configuration having nodal sources and sinks as well as branch transducers can be determined. In contrast with the conventional steady-state network analysis methods, the new technique can be extended to …

Stability Analysis Of A Continuous Stirred Tank Reactor With An Autocatalytic Reaction, David Elliot Rosenberg

Theses

The basic principles of stability analysis are set forth, including the development of a mathematical model, steady state analysis, integration of the dynamic system equations, and predictions of transient responses. The equations for the mathematical model are developed for a continuous stirred tank reactor with a cooling jacket, containing an autocatalytic reaction, in unsteady state operation. These equations are numerically integrated to obtain a good picture of reactor dynamics about the steady state. State variable methods, including the classical linearization theorems and Lyapunov's Second Method, are utilized to predict bounds of stable reactor behavior. A discussion of the shortcomings of …

A Study Of Heat Transfer And Inlet Flow Behavior In Molten Polymer Systems, Min Ho Choi

Theses

Two separate studies have been done in the present work: one to study the entrance effects in flow in molten polymer systems and the other to investigate the heat transfer to thermally softened flowing polymer.

The equipment for the entrance effect was designed to study the isothermal flow behavior of a polymer melt in the entrance region. The main object of this investigation was to find the entrance length for the melt to relax and to separate the pressure drop into viscous and elastic effect. Due to the failure in developing a proper pressure measuring device the experiment was not …

The Shoreline, Yosaif Cohain

Theses

None provided.

Variations In Functional Relationships Between Amplitude And Phase Images, Gilbert Tunney

Theses

The objective of this research is to study the functional relationship between amplitude and phase images, using a sinusoidal test function. Amplitude and phase sine wave gratings were produced and scanned. It was found that the phase image closely reproduces the amplitude image for low spatial frequencies, but the accuracy of reproduction falls off at high spatial frequencies.

Development Of High Mach Number/Low Reynolds Number Aerodynamic Characteristics For A Blended, Double-Delta Wing Configuration, Douglas J. Elder

Theses

The National Aeronautics and Space Administration’s Space Shuttle Orbiter’s high Mach number/low Reynolds number (aka viscous interaction/real gas) aerodynamics were developed based on various research studies. Four wind tunnels and a three-dimensional digital computer program developed the perfect gas aerodynamic characteristics, then correlated to single curves by the viscous parameter. A rapid and accurate analytical method for calculating the pressure distribution on blunt bodies in a uniform stream and real gas aerodynamic estimations were derived by solving the energy equation behind the shock. The gas was assumed to be perfect, the flow steady and inviscid, and the ratio of specific …

The Life Of The Negro Slave In Alabama, Daniel B. Austin

Theses

This paper is an attempt to give an unbiased account of the conditions either good or bad under which slaves lived and worked. Special attention will be given to their housing conditions, the type and quantity of clothing, food and its preparation as well as the labor they performed. Space will also be given to the crimes and punishment of Negro slaves -- additionally the education and religious opportunities will be surveyed.