Digital Commons Network^™

Development Of A Composite Material With Enhanced Electromagnetic Power Dissipation Characteristics, Lawrence R. Egan

Theses

The present work was undertaken to enhance the productivity of manufacturing operations that involve heating materials by increasing the possibilities for electromagnetic heat processing of materials. The approach taken was to design a composite material with suitable mixture formulae to have prescribed electromagnetic loss characteristics.

Investigation began by surveying industrial uses of electro-magnetic energy in heat processing of materials. From applications, the survey shifted to electromagnetic properties of materials with focus upon dielectric properties of materials. Several techniques were considered for altering the dielectric properties of a lossless plastic and the approach chosen was to dilute the base plastic with …

High Temperature Reactions Of 1,2-Dichloroethane With Water Vapor In A Tubular Reactor, Charles E. Anderson

Theses

This study examines the reaction of l,2-dichloroethane with water vapor. The linear-flow method is utilized, assuming plug flow without axial diffusion. Normal operation is at atmospheric pressure and the reactor is a quartz tube in a thermal region 45 cm in length. Two reactor diameters of 0.4 cm and l.05 cm are used. Water and l,2-dichloroethane enter the system in liquid phase via syringe pumps. After vaporizing in heated tubing, they are combined with argon, the reactor carrier gas. The molar ratio of water to l,2-dichloroethane is 55:l and varied residence times are achieved by changing the argon flowrate. Reactor …

A Study Of The Application Of Paper Spread Function Data To The Prediction Of Physical Dot Areas For Offset Lithography, Paul Lewis

Theses

This investigation was aimed at establishing a relationship between the optical spread function of four common printing stocks (cast coat, enamel gloss, enamel dull and ledger) and a Yule - Neilsen n value in predicting physical dot Area, for offset lithographic printing. Using an offset press each paper stock was printed with a test target containing common screen frequencies at percent dot areas from 5-90"/. and solid ink patches adjacent to each tint. Using planimetry and macrodensitometry, exact n values were calculated for comparison with the measured spread function of that same paper stock. No relationship between the optical spread …

A Cost And Performance Analysis Of The Three Electronic Communication Systems Currently In Use In The Printing And Publishing Industry, Susan Richards

Theses

This study describes and evaluates the three electronic graphic communication systems presently used by the printing and publishing industry. The author has selected generic system names for each of the systems. These are: System 1: Page Facsimile System 2: Character-Encoding System 3: Pixel Density-Map Page Facsimile systems are primarily used by newspaper publishers. The Character-Encoding and Pixel Density-Map systems are alternate methods primarily used by newsweekly magazine publishers. All three communication systems offer the user a means of transmitting editorial, and in some cases advertising pages, to remote printing facilities for manufacturing and distribution. Each electronic graphic communication system is …

An Exploration Of Triarylmethane Leucohydroxides, Mahin Sadrai

Theses

To explore the possibilities of the potential use of photochromism of triarylmethane leucohydroxides and leucobisulfites , five leucohydroxides (see Table [5]) and five leucobisulfites were synthesized and two leucohydroxides and one leucobisulfite were investigated in a variety of solvents with different Brownstein Coefficients. Malachite green leucohydroxide and crystal violet leucohydroxide showed opposite behavior in the same basic solutions, while both of them were dramati cally affected by the change in solutions basicity. Photodegradation induced by repeated exposure (fatigue) manifested itself in the form of lower photo -induced optical density, with a constant halflife in malachite green leucohydroxide and in the …

Robotic Work Cell For Packing Canisters, Robert J. Makar

Theses

The purpose of this project is to reduce the manufacturing cost of the special order 2500cc truck canisters produced at Rochester Products' Lee Road facility. This was accomplished by designing and developing a robotic work cell to pack the canisters into baskets at the injection mold machine. A literature search was conducted to gain a broader understanding of robotic applications and end-effector design. In developing this cell, the layout of the work cell components was determined, a suitable robot was selected, and an end-effector was designed, built and tested.

Comparative Study Of Networks Using Packet And Circuit Switching Within A Single Network, Suman Sharma

Theses

During the last couple of years, in addition to voice, other types of communications network services are becoming increasingly important. These are interactive data, facsimile, slow scan image, and bulk data. Typically, these services are delivered by separate networks using various kinds of switching technology, such as packet, circuit, or message switching. Recently, much of the focus has been on the integration of all types of communication services within the same switch or network, especially within the telephony and business industry. Integration of the communication services is being realized by integrating packet and circuit switching within the same switch or …

Evaluation Of A Quantitative Aerial Thermography Method For The Determination Of Roof Top Heat Loss, Joseph Biegel

Theses

A quantitative aerial infrared thermographic method for the determination of residential roof top heat loss is studied utilizing data gathered on over 1000 homes in the city of Plattsburgh, New York. The aerial infrared thermographic technique used as the basis of this study accounts for atmospheric and emissivity effects on the thermogram data as well as convective and radiational losses from the roof surface. The strength of the method is tested on the basis of a multivariate first order linear regression analysis using the aerial heat flow measurements as the dependent variable and parameters derived from ground survey data as …

The Development Of A Modular Poster Design, Paul Hamilton Neville

Theses

None provided.

Image Motion Compensation For An Electronic Imaging System, James H. Cain

Theses

The design of an image compensation device is given which is capable of minimizing the in-track image disturbances caused by velocity variations in an optical scanning device. Guidelines for the development of this mechanism are based on known optical principles. Acceptable response capabilities for this device are based on subjective and quantitative image quality standards. A first order analysis of the device was conducted to specify the performance required to minimize the distortions mentioned above. The final system specifications take into account actual hardware that is currently available for the typical scanner system presented.

A Detailed Measure Of Apparent Modulation Induced By Cornsweet Edges On A Digital Image Display System, Jeff Pelz

Theses

A digital image display based system was designed and implemented to perform visual measurements of apparent modulation induced by the Cornsweet illusion. The system was used to examine the results reported on previous experiments designed to measure the modulation transfer function of the human visual system. The reported results of experiments performed by Dooley and Greenfield on induced modulation were examined, and data not reported in that work was collected on the range of modulations over which observers perceived linear images. The system developed has the flexibility to be adapted for many different types of experiments. Visual experiments involving human …

A Comparison Of Two Computer Graphic Systems, Andrew L. Mayer

Theses

None provided.

Tcs: A Version Control System, Rosita Caridi Scheible

Theses

Not Included

Jmsl - A Language Derived From Apl, John Mark Smeenk

Theses

A new AFL-derived language called JMSL is presented which rnodifies seven aspects of APL so that many current and potential APL users could benefit from a language which is easier to learn, read, write, and maintain. JMSL uses ASCII tokens instead of APL symbols to remedy interfacing, extensibility, and readability problems with APL. JMSL revises and extends APL built-in capabilities to provide greater expression and improved symbol-meaning correspondence. JMSL includes a new notation for nested arrays (a powerful data structure which combines the array processing of APL with the tree processing of LISP). JMSL provides hierarchical directories (similar to PASCAL …

Biorhythms And Industrial Injuries, James Vincent Detitta

Theses

The purpose of this study is to determine whether or not a relationship exists between the time of an industrial injury and a specific position on the biorhythm scale known as a critical day.

Ninety-six employees who worked at the E. I. du Pont de Nemours Plant in Parlin, New Jersey served as a test group during 1980. In order to determine if a relationship did exist, the subjects' biorhythmic cycles for 1980 were charted and then their injury performance was monitored during that year to see if the injury date corresponded with a critical day. An additional test was …

Logic Simulation And Methodologies For Design For Testability, Ravi Shankar Prasad Mallampalli

Theses

This thesis describes the method used for developing the standard TTL blocks using the logic simulator SPLICE1. It also gives a comprehensive overview of methods which can be used for designing a circuit which is testable. A format called Electronic Design Interchange Format (EDIF) is also described as a tool which can be used for transporting design data in the VLSI indgstry.

Gas-Phase Reaction Of 1,2-Dichloroethane With Hydrogen In A Tubular Flow Reactor, Wei-Lian Lee

Theses

We have studied the reaction of 1,2-dichloroethane with H₂ in three tubular flow reactors of different diameters at atmospheric pressure in the temperature range of 550° C to 1000°C. The kinetic parameters and product distribution were experimentally determined for each size reactor. The wall and bulk reaction rate constants were decoupled via analysis of three different surface to volume reaction data.

The experimental reactor was an isothermal tubular flow reactor that operated within the domain of plug flow region. The reaction was found to follow first-order kinetics with respect to 1,2-dichloroethane when in the presence of excess hydrogen. The …

Multi-H Continuous Phase Modulation : Its Properties And Analysis, Jyung-Cheng Chen

Theses

Multi-h CPM, a generalization of CPFSK and also one of the so-called Combined Modulation and Coding schemes, is useful in digital communication systems where both the bandwidth and power are constrained. The increased signal processing complexity, which can be viewed as the third communication resource, is used to trade for both power and bandwidth, and to approach the error-free communication promised by Shannon's theorem.

The transmitted multi-h CPM signal carries a coded sequence of continuous phase changes; the possible phase states form a cylindrical trellis in phase and time, in which the modulation indices are reused in a cyclical fashion. …

Thermal Decomposition Of Chlorobenzene In An Atmosphere Of Hydrogen, Edward Robert Ritter

Theses

The thermal decomposition of chlozobenzene was investigated in a tubular flow reactor at 1 atmosphere total pressure and average residence times of 0.02 - 2.5 seconds. The temperature range from 800 - 1010°C was studied in both a reductive atmosphere of hydrogen and an inert atmosphere of heIium. Complete destruction of chlorobenzene occurs at about 1000°C for an average residence time of 1 second in hydrogen gas. In the inert gas, the complete destruction of the reagent was not observed in the range of conditions which were studied. The major products observed for pyrolysis in hydrogen were benzene, HCl, and …

A New Density-Dependent Mixing Rule For Equations Of State, Theodore John Shatynski

Theses

A general procedure for the development of density-dependent mixing rules is demonstrated. This method is used to obtain a density-dependent local-composition mixing rule based on an extention of the work of Knox et al (1984). The resulting expression is tested with the Soave-Redlich-Kwong equation of state. Results for normal and cryogenic vapor-liquid systems for both one-parameter and three-parameter versions of the mixing rule are compared with results using the classical mixing rules.

A Variant Of Tale-Spin With Independent Data And Rule Bases, Laxmi Gupta

Theses

Not Included

Measurement Of The Spectral And Spatial Responses Of The Human Eye's Blue Sensitive System And The Effects Of Lateral Inhibition By The Red And Green Sensitive Systems, Paul Berg

Theses

A study was conducted to measure the change in spatial modulation sensitivity of the human eye's blue sensitive system at low light levels due to color shift, intensity change, and accommodation of red and green sensitive systems with yellow light. A testing device was designed which allowed a wide range of variation in viewing conditions for targets of several spatial frequencies. IV Results indicate that the ability to resolve gratings by the blue cones is depressed by lowering grating intensities but does not depend on wavelength within the blue cone sensitivity envelope to any extent greater than that explained by …

Zeta Potential Measurements Of Biological Flocs Using A Streaming Potential Cell, Wayne James Gallagher

Theses

A streaming potential apparatus was assembled and tested. Its purpose was to characterize the surface of biological flocs in a wastewater environment. Samples of mixed liquor were obtained from the Passaic Valley Sewerage Commissioners wastewater treatment plant in Newark, New Jersey. Filtered mixed liquor was passed through a bed of the floc particles in the streaming potential cell, and the electric potential across the cell was measured as a function of the differential pressure drop. From these data, the zeta potential was calculated using the Helmholtz equation. Values of -0.88 and -0.44 millivolts were obtained for two mixed liquor samples.

The Modeling Of A Self-Oscillating Dc-To-Dc Converter, Frank Andrew Linkowsky

Theses

This thesis develops a model of a nonlinear self oscillating current-or-voltage step-up dc-to-dc converter. Expressions are given that predict the operation of the converter in the time domain and in the state plane. To verify these expressions, a large signal computer simulation technique [1] is used to compare theoretical results with actual measurements. This type of simulation allows a nonlinear switching converter to be modeled with a series of piecewise-linear operating intervals. The resulting waveforms predicted by the developed model show close agreement with waveforms found in the laboratory. Therefore, the model represents a powerful tool that may be used …

Gallium Film Formation By Ion Cluster Beam Deposition, Te-Chuan Hsu

Theses

Gallium thin films were deposited by Ion Cluster Beam (ICB) from pure gallium. This research had two objectives: to develop a practical method of crucible heating to generate gallium clusters; and to investigate the influence of ICB system parameters on the formation of clusters and film properties. An electron-bombardment crucible heater with a novel construction was designed. The top section of the carbon crucible was kept at a higher temperature than the middle section to prevent clogging of the nozzle and " spitting " phenomena which were found to occur with the conventional design. Crucible temperatures up to about 1360°C …

A Tracheoesophageal Puncture Voice Prosthesis, Georghios Makris

Theses

A voice prosthesis was developed that allows verbal communication of laryngectomised patients. The prosthesis requires a superiorly directed tracheoesophageal puncture in which the periscope mounted on the tracheal stoma vent is introduced. The prosthesis is operated by air injection through the periscope. Air injection is achieved by pulmonary pressure after the occlusion of the stoma vent. Stoma vent occlusion can be achieved either by the patient's finger or by the designed cover valve mounted on the prosthesis. The cover valve allows free breathing, hand-free prosthesis use, and it can release excess pressure during coughing. Periscope valve air resistance tests have …

Mwterm: A Macintosh Based Multiple-Window Unix Workstation, Deshler Armstrong Jr

Theses

MWTerm is a terminal emulator that runs on an Apple Macintosh computer. It provides a multiple window interface in which each window maps to a independent process on the host computer. It is designed to run in conjunction with a cooperating program on the host computer, under the Unix operating system. This paper describes the ideas behind the user interface presented by MWTerm. The implementation of both the Macintosh and the Unix ends is described. A discussion of the lessons learned and future enhancements is provided.

An Agreeable Truth: Facts And Faith In Nineteenth Century Photography, David Wooters

Theses

Not Included

Muscle In Motion: Four Of The Most Common Overuse Injuries Of The Bicyclist, Carol France Kalafatic

Theses

Not Included

Combined Query Language (Cql): An Interactive Query Language With Procedural Features, Ilia Levi

Theses

Interactive query languages provide easy to use interfaces to database systems. However, they lack the power of the host languages to perform manipulations on data. This thesis presents an interactive query language Combined Query Language (CQL) that has some features of procedural languages. CQL allows users to interactively manipulate databases and perform calculations on data. CQL is a self contained interactive query language that combines the computational power of a host language (like FORTRAN) with the convenience and flexibility of the common interactive query languages. Users of CQL would not have to use a host language for most of the …