Digital Commons Network^™

An Electronic Switching System: A Computer Model For Traffic Study, Richard Mcinnes

Theses

When designing a telephone switching system, it is necessary to ensure that the system will be able to handle a prescribed quantity of traffic (telephone calls) ; both at any particular instant and during a given period of time. By modelling the switching system with a digital computer, it is possible to determine the traffic handling capability of the system prior to investing in a prototype. In this manner, the system architecture can be altered by merely changing software rather than by rearranging the hardware in a prototype. The savings in terms of time and money provide the stimulus for …

Determining The Modulation Transfer Function Of A Lens-Film Combination Using The Diffraction Effects Of A Coherent Imaging System, Mark Washburn

Theses

This study will present a simple, quick, and inexpensive way to producing sinusoidal test targets, which can then be used in measuring the image quality of a photographic system by way of a coherent system. The sinusoidal test targets will be produced from a series of bar targets using Fourier Optics, and a comparison study will be made between measuring MTF with a laser and a microdensitometer. A defocused target series will also be produced to note the change in MTF of the photographic system. The results indicate that sinusoidal test targets can be made quickly and inexpensively, and then …

Estimation Of Bore Loads In Quenching Of Rings By An Expanding Segmented Die, Harry Dodd

Theses

The purpose of this investigation was to develop a method that could be used to estimate the necessary bore load on a part quenched in a quenching machine with an expanding segmented die. Such a method would be of special benefit to gear manufacturers with little quenching experience; and it could also help to greatly reduce or eliminate the very costly trial and error procedure presently used. The method must be simple enough to be used in a production situation. Such a method has been developed for estimating the expander cylinder force required to produce the greatest amount of correction …

A Stage Design And Notes On The Engineering And Technical Direction For The Play, The Effects Of Gamma Rays On Man-In-The-Moon Marigolds By Paul Zindel, Dan Krehbiel

Theses

Unavailable.

Oil-Fired Pottery, Peter Regan

Theses

Not Included

The Correlation Of Hammett Substituent And Brownstein Solvent Constants With Photochromic Properties Of Triarylmethane Dye Leucocyanides, Robert Bayley

Theses

Five triarylmethane leucocyanides were synthesized from their parent dyes, and a photochromic test apparatus was designed and fabricated. The leucocyanides were tested for sensitivity and fade time in six solvents. The data was found to correlate well with Hammett substituent constants and with Brownstein solvent coefficients with certain exceptions.

A Synchronous Data Compression System, Joseph Calcagno

Theses

This thesis discusses in detail the steps required for the design of a general purpose Data Acquisition System (D.A.S.). This D.A.S. is called a Synchronous Data Compression System (S.D.C.S.) because of some special features. The S.D.C.S. is designed to accept data in analog or digital form. A simple control panel interface is developed, and areas of prime interest such as input/output interface control, analog-to-digital conversion, data compression, and data sampling modes are discussed in detail. ? The primary logic type used for the S.D.C.S. is the CMOS type 4000 Series which was developed by R.C. A.

On The Analysis Of The Timoshenko Beam Theory With And Without Internal Damping, Chinubhai Doshi

Theses

The Timoshenko beam equation in terms of variable 'wB' is derived where 'wB’ is the deflection due to the bending of a beam. The equation is used to analyze an infinite beam loaded with (i) a concentrated transverse load and (ii) an impulse. It is also shown that the rotatory damping in the equation eliminates the increasing amplitude in the propagation of the bending moment when an impulse is applied to an infinite beam. Also the general procedure for the anlysis of a non-homogeneous equation is explained.

Readability Determination Using Superimposed Random Noise Patterns, Michael Dennison

Theses

A readability gauge was constructed which objectively gauges the readability of printed matter. In the past such gauges have been produced using photographically created noise. In this study a gauge was constructed using noise generated by a computer. This gauge was evaluated and compared with a gauge produced using the photographic technique of noise generation. The computer generated gauge proved to be as good as the photographic gauge at detecting differences in legibility of printed type. It was also found that the only two causes of variability in the legibility samples used were letter size and letter contrast. Using only …

Modifications Of A Herrnfeld Sensitometer For Interimage Studies, Charles Tobin

Theses

An available Herrnfeld Sensitometer has been rebuilt and modified to include a six position filter wheel, three narrow band interference filters, a separate D.C. power supply, and a central control panel. The modified sensitometer expedites the single layer exposure of color film. The system accomplishes this by using interference filters whose band-width peaks are matched to the peak spectral sensitivity of each emulsion layer to be exposed. A D.C. power supply has been included to eliminate lamp ripple caused by the oscillations that occur in the A.C. line. In depth experimentation (approximately 20 rolls of film) produced exposures closely approximating …

A Software Development System For The Motorola M6800, John Michael Moore

Theses

The goal of this project was to produce a useable software development system for the Digital Group M6800 microcomputer. The design was to have implemented the command language of the Digital Group Z-80 operating system and and have the capability of assembling source programs written using the Motorola M6800 assembly language mnemonics. The program developed to fulfill these requirements was assembled using the Motorola M6800 cross assembler and occupies approximately 7K bytes of memory. The functions provided include an editor package for the entry and modification of source programs, an assembler which meets the design goal and a debugger package …

Theories And Experiments For Determination Of Nonsteady Loads On Turbomachine Blades, James F. Crofoot

Theses

This thesis collates the state of the art for flow induced excitation in a turbomachine stage under subsonic incompressible flow conditions. Theoretical developments are considered first, beginning with the vortex theories of Kemp and Sears, Henderson, Horlock and Holmes. Actuator disk analyses of Whitehead, Henderson and Horlock, and Horlock, Greitzer and Henderson are then considered followed by field theories of Osborne, Warner and Steele. Computer programs based on these theories are described and detailed input/output instructions are given. Results of these theories are compared and the state of the art for theoretical prediction of nonsteady blade loading is discussed. It …

William And Marion Kettner: Brother Bill And The Lass From Tuolumne, Lucille Clark Duvall

Theses

The presence and financial impact of the United States Navy upon the city and county of San Diego cannot be disputed. The person responsible in large part for this impact was Congressman William Kettner, whose vision, foresight, and singleminded devotion to the city was legendary in his time. Little is known today of this outstanding citizen save a main thoroughfare, Kettner Boulevard, named in the Congressman's honor in 1921. Yet this man, among other accomplishments, brought the Navy to San Diego, which today claims one out of every three county residents as either active duty, retired, a member of the …

Evaluation Of Turbine Blade Root Damping, Curtis Beck

Theses

A test program has been conducted to measure the vibration damping of three designs of steam turbine blades. These blades were tested in their root attachments, sectioned from retired rotors. Blade loading was accomplished in a new type of blade damping test rig and damping was evaluated in the lowest tangential and axial blade modes. The test environment was room temperature air. The damping rig concept and development is presented in detail as well as results of an intensive test program. The blade designs are designated as Types A, B, and C, where Types A and B were of a …

Managing The Seemingly Unmanageable Enterprises, Michael Daramola

Theses

Unavailable.

Second Stage Autoradiographic Amplification Of Developed Underexposed Tri X Emulsion Images, David Dempster

Theses

A series of del iberately underexposed Kodak Film Type Tri-X negatives were first, conventionally developed, the image silver made radioactive with sulfur-35 thiourea, and by using an autoradiographic technique, the image recovered on X-ray film. The resolution and characteristic curve parameters of the final image compared to those of the original donor image were determined by varying the secondary exposure time (contact time between radioactivated film and x-ray emulsion), type of x-ray films and exposure levels. The Tri-X Pan emulsion donor image was amplified using Kodak "NMC", "MA" and "RP" X-ray films as receivers. "NMC" was slightly preferable to "MA", …

Shape, Douglas Bull

Theses

None provided.

Improved Methods Of Plywood Carcass Construction, George Berry

Theses

Not Included

Effect Of Concentration And Ph On Parametric Pumping Separations, Tsu-Kun S. Hsieh

Theses

The technique of parametric pumping represents a new and valuable development in the separation science of proteins. Many conventional protein separation are often processed batchwise. However, parametric pumping offers the possibility of continuous processing; the continuous process provides both the advantages of decreasing the processing time and of minimizing degradation.

Preliminary step testing experiments were conducted to study the equilibrium of protein between the stationary and mobile phase of the sephadex ion exchanger.

It was the purpose of this research to study the feasibility of operating a semi-continuous parametric pump with a sephadex ion exchanger for the separation of a …

The Measurement Of Depolarized Radiation For Monitoring The Mass Concentration Of Particulates, Bruce E. Wilson

Theses

The depolarization of backscattered polarized incident radiation which is expressed as a depolarization ratio was investigated as a means of monitoring the mass concentration of particles in stacks from coal-fired burners. This involved the design of an instrument that would detect small levels of radiation. Two methods were investigated. The first utilized a Gallium Arsenide laser and a silicon detector diode; the second was composed of a xenon flash lamp and a photomultiplier detector tube.

The relationship between the depolarization ratio and the mass concentration of diamond particles in the 0.01 gm/m³ to 0.5 gm/m³ was determined. Diamond …

The Effect Of Dopants Sio2, Geo2, And Sno2, On The Microstructure And Magnetic Properties Of Mn-Zn Ferrites, Santosh Kumari

Theses

Ferrite have found a variety of uses in electronic and communication engineering. Mn-Zn ferrites (Mn1-XZnxFe2O4 ) are widely used as filter core materials over a range of frequencies varying from several hundred Hz to several MHz. There are many other applications such as in television receivers as deflection yokes and E.H.T. cores etc. The development of a ferrite suitable for a particular application is an interesting scientific problem and technological challenge. The properties of ferrites are determined by a number of intrinsic properties and their interaction with the ceramic microstructure. Impurities, present in or added to the raw materials used …

Microdensitometer Digitization, Bruce W. Binns

Theses

The importance of performing extensive calculations on microdensitometer data makes entry of the data into a computer mandatory for many types of investigative situations. The previously available facilities in the Photographic Science department have supported only manual data entry techniques. Such techniques are slow and prone to error, greatly limiting use usefulness of the Ansco Model 4 microdensitometer available for student use. This thesis has involved the designated implementation of a low cost digitizatio technique that allows convient gathering, storage, and machine read input of data into the RIT timesharing computer facilities. A conservative increase of two orders of magnitude …

Procedures And Techniques To Identify And Teach The Ld Child In The Regular Classroom, Linda S. Bauwens

Theses

This handbook is to be used by teachers and parents as an introduction to understanding and helping learning disabled children . The handbook is divided into two sections . Part I is intended for the teacher who has an earnest desire to meet the individual needs of her l earning disabled students through the use of various media and teaching strategies. Part I will first of all familiarize the teacher and parent s with the terminology that is essential for communication involving the LD child , The l earning deficits are categorized under two channel abilities for ease in clarification …

Interimage Effects And The Mtf Of A Color Reversal Film, Joel Panning

Theses

Interimage effects have long been recognized as a factor in the reproduction of color. Reversal materials are no exception and exhibit interimage effects which have previously been revealed through techniques using END analysis. This study presents a method for revealing the presence of interimage effects in a reversal film's Modulation Transfer Function. Utilizing filtering techniques, two dyes of a three color transparency are eliminated from the final image by exposure and development. The remaining single dye image at a specified level is then compared to the corresponding layer and image in a colorimetrically specified neutral. The edge gradient analysis method …

Math Games: A Teaching Tool For Primary Math Skills, Carolyn J. Newcomb

Theses

Games as a teaching tool have been found to enhance learning, motivate students, provide immediate feedback and develop social skills . Through the use of games high student interest is developed by active learning, revitalizing the educational program.

Teacher made games are developed to reinforce the primary (grades one through three) mat skills . Eight major company's textbooks were used to compile the skills taught. Games were developed for each of the basic skills using ideas from books, original ideas, children's interests and suggestions .

Included for each game is a rationale, materials needed to construct the game, directions for …

The Effect Of Simultaneous Intensification On The Detective Quantum Efficiency, B. Desai

Theses

The effect of simultaneous intensification on the detective quantum efficiency of Kodak high definition aerial film type 3414 is investigated. The detective quantum efficiency or DQE varies from .00086 % to .115 % for the unintensified exposure over a log exposure range of 0.9, with the peak at .1223 %. This exposure has a base+fog density of 0.06. Different degrees of simultaneous intensification result in varying values of DQE. The exposure with simultaneous intensification which produced a base+fog of 0.24 gave the maximum sensitometric speed incease by a factor of 1.38 f/stops or 158 %. This exposure varies in DQE …

Management Of Manpower Planning In A Job Shop, John E. Yadlon

Theses

The object of any system of manpower planning is to provide a means to optimize manpower utilization. Within this base there is the normal requirement to provide effective utilization of equipment, materials and manpower. In a production type of environment, studies, statistics, research and supervisory manpower are readily available to best optimize manpower planning. In a job shop environment only fragments of these elements are available. Also, the available supervisory time for studies and implementation of research into statistics is usually very small. The net result is that manpower management in a job shop is all too often guessed at. …

The Introduction Of A Computerized Production Control System In A Small Manufacturing Company, Harry Leroy Zimmerly

Theses

The purpose of this thesis is to acquaint the reader with the intricacies of introducing a computerized production control system into a small manufacturing company. To do this a hypothetical company was described as it existed with a manual production control system. The information flow of the manual system was described in detail.

Potential computerized production control systems with a shop data collection system were then investigated. A computerized system would expedite information flow, allow rapid assembly tracking, take accurate data and reveal the actual cost (including labor cost) of an assembly. This was done first by examining technical publications. …

Possible Efficiency Improvements In Residential, Gas Fired Furnances, Philip Louis Rinaldi

Theses

This project examines the problem of how to improve energy utilization in a residential space heating environment. Techniques for lowering unit energy consumption are developed and the feasibility of their implementation is discussed.

The project development first establishes the magnitude of the energy wastage problem for the individual consumer and its impact on the national scale. It must be emphasized that these represent two, sometimes distinctly different justifications for reducing energy use in the home. What may be considered only a small personal waste of $50 to $100 per year may indeed--when viewed in aggregate--represent a significant burden on the …

The Slow Settling Of A Sphere In A Viscous Fluid In The Proximity Of A Corner, Joseph Kisutcza

Theses

Experimental settling velocities for three different sizes of Delrin spheres in Ucon lubricant were determined at 20.2 degrees Celsius in order to confirm the validity of a theoretically derived equation for the settling of a sphere in the proximity of a corner. The experiments were conducted in a wedge shaped column with a circular sector base, filled with the viscous fluid, where the angle of the wedge was varied for experimental purposes. The distance from the wedge apex to the particle was also changed for the different runs.

The experimental data gave a good approximation of the values evaluated by …