Digital Commons Network^™

A Multipurpose Test Mask For Exposure Tool Characterization, Brian Benamati

Theses

Of the many facets of integrated circuit fabrication, photolithography may very well be the most important due to the number of levels required for the fabrication of sophisticated devices. Therefore it is imperative to understand the performance capabilities of an exposure tool and identify its inherent limitations. Many methods have been developed which concentrate specifically on evaluating resolution, critical dimensions or registration. Often test patterns exist which vary widely for applications with respect to steppers, IX scanning projection aligners and other IX exposure equipment. The following work is focused on the requirements of evaluating and optimizing all aspects of performance …

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 …

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.

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 …

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.

Trends In Metal (Pb, Zn, Ni, As And Se) Concentrations In The New Jersey Air Environment, Geoffrey Ike Ejiofor

Theses

The trend and atmospheric concentrations of five trace elements (Pb, Zn, Ni, As and Se) were studied at Newark (urban site) and Ringwood (rural site), New Jersey, during January - September 1985, whilst the Hackensack Meadowlands, New Jersey were monitored during October 1985-March 1986. The analytical procedure involved collection of the airborne particulates on a glass fiber filter using a non-dichotomous high volume sampler. The samples were digested and analyzed using the atomic absorption spectrophotometer. It was ascertained that Newark and Meadowlands exhibited higher average concentrations of Zinc and Lead than Ringwood. It was concluded all the metals originated mostly …

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 …

Experimental Study Of Rectangular Reinforced Concrete Members Under Combined Biaxial Bending And Tension, Naresh B. Patel

Theses

In practice it is a very common case to have a column subjected to combined effects of axial tension and biaxial bending moments and very few efforts are done to get good design approach for such special members.

So for this purpose, experiments were carried out on rectangular shapecolumns. Rectangular shaped columns were casted in homogeneous with brackets - one on each end and at connections haunches were provided to avoid the possible end failure. The overall shape of this configuration was "H" shape. Two hydraulic jacks were used; one on either side of the columns and thus column section …

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 …

The Biochemical Fuel Cell : Conversion Of Waste To Energy, Charles August Mielke

Theses

A batch biochemical-fuel cell was constructed and studies on the production of bioelectric energy using an alga Scenesdesmus quadricauda, and a bacterium Desulfovibrio desulfuricans, were conducted. Results were compared for a steady state cell using various concentrations of media components and showed that a 1000-fold increase in the concentration of media components produced a net potential output of 0.03mv/ml compared to an initial output of 0.02mv/ml. Further studies showed the biochemical net potential output using activated sludge from a waste treatment facility was 0.01mv/ml compared to 0.02mv/ml for the cell using the initial media concentration.

The system exhibited steady state …

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 …

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 …

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.

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. …

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.

Effect Of Center Of Gravity Location On Optimum Performance Of Random Vibratory Vehicle Suspension, Daniel Mahar

Theses

This study provides the analysis for the optimal design of a conventional vehicle suspension system, consisting of a sprung mass (vehicle body) and two unsprung masses (wheel frame), accentuated by the implementation of a damped absorber to the unsprung masses. Further, the effect of the c.g. (center of gravity) location of the vehicle body is investigated. A two dimensional, four degrees of freedom linear model is chosen. Randomly profiled terrain is assumed to impart hyperbolically distributed stationary vertical random displacements to the front and rear wheels. For generalization, nondimensional design parameters are selected. Criteria for optimization include the tire-terrain normal …

The Effect Of The Relief Plate Shoulder Angle On Flexographic Dot Gain, Bruce Brier

Theses

The mechanism of image-formation in photopolymer flexographic relief printing plates is reviewed. In addition to the identified factors, it was hypothesized that the level of exposure could influence the plate shoulder angle. It was further hypothesized that an optimization of shoulder angle with respect to halftone dot area may reduce the dot gain of the printing process. An experiment was conducted using a novel method of plate exposure. Continuous-tone masks were placed in contact with the plate back and the halftone negative used on the plate face. The resulting shoulder angles were measured and analyzed for significant fit to a …

Tests On Square Reinforced Concrete Members Under Combined Biaxial Bending And Tension, Bhadresh Shah

Theses

The research reported herein studies the ultimate strength behavior for square-shaped reinforced concrete short columns under combined biaxial bending and tension that is a common design problem. The present ACI building code (ACI 318-83) (1) and design hand book (2) do not offer an insight into the determination of strength and ductility behavior of biaxially loaded reinforced concrete columns. A design equation developed by Hsu (3,4,5 ) to study the ultimate strength behavior and failure surfaces for members under these combined action was used and the computed results were compared with the present analytical results and experimental results for square-shaped …

Analyze3d, A Structural Analysis Program Employing Membrane And Solid Finite Elements, James Mendham Gathercole

Theses

The purpose of this thesis is to describe the addition of an 8 and 20-node isoparametric brick element to the finite element program ANALYZE, permitting three-dimensional analysis. The reason for the addition is that even though Analyze is a relatively simple program, its simplicity makes it a good educational tool for finite element courses. The added brick element expands the use of the program for educational purposes.

In its original form, Analyze is a finite element package for static structural analysis developed at Wright Patterson Air Force Base. The program consists of four finite elements: (1) bar, (2) membrane triangle, …

The Effect Of Systemic Arterial Pressure On Microvascular Flow And Transcapillary Exchange Of Macromolecules In The Hamster Cheek Pouc, Govind Mohanlal Gawdi

Theses

Microvascular flow velocities and transport of macromolecules were studied in the hamster cheek pouch under control and acute high arterial pressure conditions, with or without topical (local) application of the vasodilating agent, bradykinin. Mean arterial pressures of 130-160% control were attained by intravenous renin infusion. The microcirculation of the cheek pouch was studied using intravital microscopy. Areas with arterioles and venules were recorded on a videotape for later analysis of red cell velocity, using an RBC tracking correlator, and vessel diameter using a video shearing monitor.

In addition, vascular permeability to macromolecules was studied in the hamster cheek pouch vascular …

Theoretical Investigation Of Submerged Turbulent Jet, Talal N. Hindi

Theses

A theoretical investigation concerning the flow characteristics velocity distribution of a circular submerged turbulent axisymetricic water jet impinging on a flat plate was carried out. Starting with the use of the available data and equations obtained by previous investigators and found room for improvement. By solving these equations for the velocity distribution and comparing them to the experimental results is was found out where improvements of the analysis were were necessary. Then taking Tollwien's solution for the velocity distribution and changing the reference axis to see whether or not the equations would give better results for velocity calculations. With certain …

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.

Reliability Of Dielectrics : Using Noise As A Diagnostic Tool, Ramesh K. Jain

Theses

The aim of this thesis is to develop a screening method to predict the reliability of a dielectric material. The screen chosen is an electrical noise. The dielectric material studied is varnished fibre glass cloth material supplied by Westinghouse Electric Corporation.

The dielectric material will have varying amount of voids, crystal defects, and surface contaminants impurities introduced during manufacturing process. On application of the electric stress, ionization (corona) will take place. The corona degrades the material due to thermally generated heat, chemical reactions in the voids and ionic bombardment of the material.

An experimental set up is developed to monitor …

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 …

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 …

Investigation Of Water-Binding Properties Of Industrial Sludges Using Thermal Analysis As A Monitoring Tool, Ron Josephson

Theses

As part of a program to develop new and more cost-effective dewatering approaches for industrial hazardous wastes, sludges and synthetic "model" materials were analyzed by thermal methods in an attempt to comprehend their water-binding qualities and differentiate free and bound water. These thermal methods included Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TG), and Differential Scanning Calorimetry (DSC). Industrial sludges and laboratory models were compared using both standard heating techniques and subambient cooling (to -60°C). This latter technique provides direct indication of the amount of free water. This information can be very useful in evaluating and improving dewatering techniques for industrial …

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 …

An Enrollment Projection Simulation, Dianne Bills

Theses

This thesis applies current computer science technology to the simulation of student behavior, called Student Flow, in higher education. Data Flow Diagrams were modified for Student Flow analysis and used to help select parameters relevant to the simulation. A longitudinal database of enrollment activity was retrieved and analyzed to generate simulation statistics. The simulation was implemented using an electronic spreadsheet. The model thus developed was then used to project future student enrollments.