Digital Commons Network^™

From The Screen Through The Screen, Marianne O'Loughlin

Theses

This thesis project's aim is to transfer the early or beginning read er's interest and focus from the video screen; i.e.: television or Nintendo, to the printed text of the book through interaction with the computer by reinforcing the narrated story with on-screen text. Much like read-along audio tapes, the premise of this thesis is to combine pictures, words and sound into a computerized support for a story. To create interest for the proposed age group, the criteria used will be based on an entertaining tale, quest, or game, rich in language and illustration, intermixed with humor. The goal is …

A Digital Signal Processing-Based Predistortion Technique For Reduction Of Intermodulation Distortion, Richard James Buckley

Theses

Linearization of power amplifiers has been the topic of many studies, dating back to the work of H. S. Black in the 1920s. For many applications, the well-documented techniques of feedforward and feedback can be used to design low intermodulation distortion (IMD) amplifiers. However, certain applications, including the design of high-power, radio frequency amplifiers, preclude the use of these techniques. The work herein describes an alternative to presently accepted distortion reduction techniques. In-band IM distortion (multi-tone distortion located close in frequency to the desired signal) , is reduced by modifying a baseband input, upconverting this signal to the transmission frequency, …

Design And Implementation Of An Asynchronous Version Of The Mips R3000 Microprocessor, Scott Siers

Theses

The goal of this thesis is to demonstrate the feasibility of converting a synchronous general purpose microprocessor design to one using an asynchronous methodology. This thesis is one of three parts that details the entire design of an asynchronous version of the MIPS R3000 microprocessor. The design excludes all of the memory support features of the processor for two reasons. First, the memory is already handled asynchronously and second, the size of the project must be limited. This design has implemented the entire set of instructions from the original synchronous version with the exception of certain memory instructions. The three …

The Use Of Plasma-Generated Silicon Dioxide-Like Coatings As Charge Storage Media For Electrets, Xiaorong Lin

Theses

The object of this project is to study the electret properties of silicon dioxide coating. Silicon dioxide coatings were produced by microwave plasma chemical vapor deposition under various conditions such as pressure, flow ratio, power, etc.. DC bias, thermionic emission and corona charge were used to produce charges in the silicon dioxide film. The results include measurements of deposition rate of silicon dioxide, the absorption wavenumbers, the thickness and index of silicon dioxide coating. The electret properties were focused on the charging process, charge distribution and charge decay rate.

Design, Fabrication And Characterization Of Infrared Filters, Samiul Amin

Theses

In-situ temperature monitoring, mapping, and control have become significant in semiconductor processes. Temperature of these processes can be measured by making use of the thermal emission from substrates in the infrared region. Various methods have been proposed to provide multicolor infrared detection. One such method involves placing segmented infrared filters close to the focal plane. The present study aims at gaining an insight into the design, fabrication and characterization of infrared filters. Filters were designed and fabricated with peak transmission at 1.5, 3.0, and 4.5 m. Extensive spectroscopic studies, using FTIR spectroscopy, have been performed in the infrared region, on …

Investigation Of The Pl Cebus Performance With And Without Acknowledgment, Menghan Pan

Theses

The power line implementation of the consumer electronic bus (PL CEBUS) is a promising and inexpensive approach for home automation. Since the intro¬duction of the PL CEBUS standards, there has been increasing efforts on evaluating its performance. However, all the works have been performed for unacknowledged networks. This thesis presents the first successful evaluation of the PL CEBUS with acknowledment. Three different cases, namely, 600, 300 and 100 bits packet sizes, have been considered. The evaluation included the simulation of performance parameters such as message and packet delays, message throughput, and channel throughput. Acknowledged network performance has been confirmed to …

A Parallel Processing Architecture For Dqdb Protocol Implementation, Nilesh Vinubhai Gandhi

Theses

The high bandwidth transmission links, which have been provided by the advances of Fiber Optics Technology, reduce drastically the packet transmission times and place new demands on the nodal protocol processing. Segmentation and reassembly of packets, computation of checksums, introduction of source and destination addresses, etc., must be performed extremely fast in order to prevent node processing from becoming the bottleneck of the transmission. Parallel processing enables the execution of the previous tasks on multiple packets simultaneously and therefore has the potential of addressing the issue of fast node processing successfully. In this thesis we focus on the Medium Access …

Modeling Of Rapid Thermal Processing System By Finite Element Method, Helen Martynov

Theses

A finite element model for the Rapid Thermal Processing (RTP) system at NJIT was developed based on the software package MSC/NASTRAN. Based on this model, a thermal analysis of the 9" chamber, 3 zones (37 lamps) RTP system was conducted for various modes of system operation with the 6" silicon wafer temperature varying from 300°K to 1100°K. An open-loop control algorithm was developed in order to study the dependence of wafer temperature on time, position, and applied radiant heat distribution. It was shown that the non-uniformity in the radial temperature profile can be less than 3°C during wafer heating at …

Finite-Element Ray Tracing, Yong-Chun Liu

Theses

The interesting acoustic modeling problems often push the practical limits of full-wave models. For instance, in acoustic tomography one needs to be able to predict the propagation of an acoustic pulse for successive realizations of 31) environments. For these types of problems ray methods continue to be attractive because of their speed. Unfortunately, existing codes are prone to a number of implementation difficulties which often degrade their accuracy.

As a result most ray models are actually incapable of producing the ray theoretic result. We discuss a. new method for implementing ray theory that uses a. finite-clement formulation. This method is …

Radiation From A Tapered Dielectric Rod Antenna, Anil Prabhakar

Theses

The radiation fields from a cylindrical dielectric taper is studied. The numerical results of a theoretical model for a taper excited by the dominant HEn mode is compared with experimental measurements. A theoretical mode] for the next propa¬gating mode in the structure. the TE01 mode. is investigated and numerical results based on this proposed model are generated. The theoretical models are based upon the combination of the exact modal field solutions for a step profile cylindrical dielectric rod waveguide. local mode Hum-T. and the equivalence principle for the determination of equivalent current densities.

The far-zone radiation field is considered to …

Rigorous Te Solution To The Staircase Model Of The Dielectric Wedge Antenna, Wan-Yu Chen

Theses

The rigorous TE solution to the staircase model of the dielectric wedge antenna is presented. The fundamental, even TE surface wave mode of the dielectric slab waveguide is taken to excite a dielectric wedge which is formed by symmetrically tapering the slab. The method of solution is based on Marcuse's step-transition method. Radiation patterns of power gain are presented which show increased maximum power gains and narrower main lobe beamwidths for longer wedges. For higher dielectric constant material, the main lobe beamwidth is increased. In all cases examined, negligible sidelobes were obtained.

The Nature Of Beads, Michele D. Miller

Theses

The purpose of this thesis is to explore the various qualities of nature through the concept of the bead. A series of beads has been created whose aesthetic elements enhance the essence of nature and the spirit of the individual. With these pieces I wanted to express my sensitivity and feelings about nature relating to seasons of the year and personal memories. It is my hope that this body of work will heighten an awareness of nature and arouse thought and curiosity about beads.

Scanning Ratios For Desktop Imaging, Mike Beaulieu

Theses

Users of desktop scanning technology are conscious about the quality the image detail reproduction. Repeatability and accuracy are based on certain standards. Established scanning procedures for charged couple device (CCD) desktop scan ners are primarily influenced by the Nyquist Criterion which states that an image must be sampled at twice the frequency of the line screen ruling that will be used to print the final image. These "rules of thumb" appear in many techni cal and trade publications that are consulted by the printing industry in order to insure the quality of printed products. Quality is not the only factor …

Laboratory Investigation Of The Effect Of The Dampening Solution On The Loss Of Surface Strength Of Coated Paper, Chung-Ni Liu

Theses

Wet pick is thought to be caused by the presence of water used in lithography. The quantity of the wetting fluid, surface tension of the wetting fluid and the time interval between wetting and printing were tested to see if they affect the paper surface strength. Two rolls of web paper are pre-sampled from the RIT press room. One was found to exhibit the problem of wet pick while the other did not exhibit this defect. These papers were tested on the IGT Printability Tester in a manner similar to that predicted on press when a moisture film of 0.2 …

A Dsp Based General Self-Tuning Observer Controller, John F. Seward

Theses

This treatise presents an implementation of a General Self-Tuning Observer Controller (GSTOC) for adaptive velocity control using a TMS320C25 Digital Signal Processor (DSP). The GSTOC is a structure based on modern control state-space theories, such as Kalman filters used as steady state or time-varying optimal state estimators, full state feedback using pole placement or optimal control theory and parameter estimation techniques.

Infrared Symbolic Scene Comparator, Thomas G. Servoss

Theses

Infrared image analysis has become a very popular subject of study. Situations as recent as the Gulf War have proved the advantages, and therefore the need, of having not only the proper imaging equipment but the training and expertise to use that equipment. To date, there are few tools that analysts can use to educate themselves and the operators of the state-of-the-art imaging equipment. There are even fewer tools that provide the flexibility to control nearly every aspect of infrared imaging phenomena. Several pre-existing and a few new remote sensing sub-systems have been combined to create an extremely user-friendly infrared …

Dadashow An Interactive Resource And Reference Database On The Dada Art Movement, Melissa A. Sheldon

Theses

None provided.

A Self-Timed Implementation Of The Bi-Way Sorter Systolic Array Processor, Mitchell Diamond

Theses

Self-timed circuits with an appropriate handshake control circuit can be used to replace the global clock in a VLSI chip. By replacing the global clock many problems which face designers have disappeared along with the clock. Some of these problems are due to clock skew and capacitance scaling with smaller feature sizes. The wire capacitance cannot scale below a certain limit due to two-dimensional effects, therefore the RC delays associated with the interconnect layers do not scale proportion.ally to the feature size. The resultant increase in wire delay makes it difficult to distribute a global clock at a high frequency. …

Synthetic Image Generator Model: Application Of Specular And Diffuse Reflectivity Components And Performance Evaluation In The Visible Region, Richard Stark

Theses

This study focused on the operation of the RIT Digital Imaging and Remote Sensing Lab's synthetic image generation (DIRSIG) software model in the 0.4 to 1.0 urn wavelength region. The overall intent was to create a baseline for future DIRSIG activity. This was achieved by modifying the infrared based software to account for the characteristics of visible energy, and then evaluating the model's overall performance. A modification was made to the model's radiance algorithm by dividing surface reflectivity into a combination of view angle dependent diffuse and specular components. Additionally a practical method was developed for generating these values. Performance …

Photolithography Model Parameter Extraction From In-Situ Measured Development Rates, Patrick G. Drennan

Theses

None provided.

Organometallics: (I) Synthesis Of A Macrocyclic Complex Praeseodymium And (Ii ) Effect Of Wilkinson's Catalyst On The Cleavage Of Cyclohexene Oxide By Borane, Carolyn Ruth

Theses

(I) The template synthesis and characterization of the complex of praeseodymium acetate from 2,6-diacetylpyridine and orthophenylenediamine was attempted. The attempted synthesis produced a green precipitate with a high melting point and poor solubility in organic solvents, unlikely characteristics for compound 1 seen on the page. This project was set aside due to the apparent failure to produce the desired compound. (II) The effect of Wilkinson's catalyst on the treatment of cyclohexene oxide with borane-THF at 72 for 5 1/2 hours was also investigated. Oxidation of the organoborane formed by both the catalyzed and uncatalyzed reactions produced cyclohexanol. Another significant product …

A Comparison Of Methods For Forming Multitemporal Composites From Noaa Advanced Very High Resolution Radiometer Data, Craig Laben

Theses

Processed satellite data from the Advanced Very High Resolution Radiometer (AVHRR) generally consists of earth imagery which is obstructed to some extent by cloud coverage. Cloud-free images of certain geographic locations are valuable for numerous remote sensing applications. One way of obtaining a cloud-free image of an area is by the generation of a multitemporal composite. This involves generating images from consecutive satellite passes and selecting cloud-free areas from each day. These cloud-free areas can be pieced together to form a composite image clear of any cloud coverage. A study was conducted in which different methods of forming multitemporal composites …

Channel Routing: Efficient Solutions Using Neural Networks, Taj-Ul Islam

Theses

Neural network architectures are effectively applied to solve the channel routing problem. Algorithms for both two-layer and multilayer channel-width minimization, and constrained via minimization are proposed and implemented. Experimental results show that the proposed channel-width minimization algorithms are much superior in all respects compared to existing algorithms. The optimal two-layer solutions to most of the benchmark problems, not previously obtained, are obtained for the first time, including an optimal solution to the famous Deutch's difficult problem. The optimal solution in four-layers for one of the be lchmark problems, not previously obtained, is obtained for the first time. Both convergence rate …

Automated Image-To-Image Rectification For Use In Change Detection Analysis As Applied To Forest Clearcut Mapping, Kaleen S. Moriarty

Theses

An automated approach to change detection analysis was developed for use in multi-temporal image comparisons. An algorithm was developed which enables the user to perform automatic image-to-image rectification. Manual registration techniques are utilized to register a reference image to a Universe Transverse Mercator map projection. Control points, or kernel images, are extracted from the rectified reference image and located automatically in the to-be-mapped images via mathematical correlation. A two windowed approach is used that requires an estimation of the location of the control point in the to-be-mapped image. This estimate is used to create a search area which is correlated …

Computer Aided Design And Simulation Of An Intergrated Photonic Delay Line System For Phased Array Antenna And Other Microve Signal Processing Applications, Kevin Baldwin

Theses

Over the past few years, phased array antennas and variable RF/Microwave delay lines have been the subject of much research. This thesis presents a photonic solution to the generation of multiple, compact delay lines. Variable time delays are generated by optically tapping points on an acousto-optic cell by the use of a deformable mirror device. Isolation of a particular time delay is accomplished by the conversion of a time delay point into a corresponding spatial frequency by the use of appropriate optics. The desired time delay is recovered by heterodyning a local oscillator with the desired spatial frequency, selected by …

Csg Based Automatic Mesh Generation Using Multiple Element Types, Richard H. Hall

Theses

The objective of this thesis project is to explore a unique approach toward automatic mesh generation for finite element analysis. Current mesh generation algorithms are only applicable to a single type of domain. Countless mesh generators exist for meshing 2D regions with triangles and quadrilaterals, and mesh generators also exist which can mesh 3D regions with tetrahedra and other element types. However, not all structures are strictly "2D" or "3D", and not all structures are best modeled with a single type of element. An experienced finite element analyst typically uses many types of elements when modeling a real problem. This …

Let Wildlife Live: A Computer Illustrated Calendar Of Endangered Species, Mark S. Sommers

Theses

None provided.

Synthetic Routes Towards Spin Probe-Grafted Copolymers, Christopher Mccarthy

Theses

Nitroxide spin labels can be useful as oxygen probes since the shape of the characteristic three line electron spin resonance (ESR) spectrum broadens in the presence of molecular oxygen. In order to use these probes in. vivo to measure oxygen content of tumors, contact of toxic nitroxides with tissues must be prevented. This study describes synthesis and characterization of several styrene/maleic anhydride copolymers containing grafted 2,2,6,6-tetramethyl-4-aminopiperidine-1- oxyl (TEMPO) spin probes. Infrared (IR) spectroscopy was used to determine the structure of the copolymers. ESR spectroscopy was used to contrast the free radical activity of the copolymer in an nitrogen-rich and oxygen-rich …

The Design Of A 10bit 15mhz Analog To Digital Convertor, Scott L. Tewinkle

Theses

A 10 bit 15Mhz Analog-to-Digital converter (ADC) has been designed using a novel three step conversion technique. Successive 4bit, 3bit, and 3bit flash cycles are done for a complete conversion. Each flash cycle uses 15 comparators even though the second and third cycles require only seven comparators. The eight extra comparators are used for 4LSB digital error correction. Since, the ADC requires more than one clock cycle for a complete conversion two parallel comparator banks are used to obtain the 15Mhz conversion rate. A test chip has been designed with a 2 micron, double metal, single polysilicon, nwell CMOS technology. …

Morphological Classification Of Noisy Shapes Via Exterior Granulometries, Yingchong Cheng

Theses

Shape classification via linear granulometric moments is examined for patterns suffering varying degrees of edge noise. It is seen that recognition is quite poor even for modest amounts of noise and remains poor even when the patterns are first filtered by a close-open filter. Recognition accuracy is greatly improved, for both unfiltered and filtered images, by employing exterior granulometries. These are constructed by applying the various linear structuring-element sequences to the corresponding linear convex hulls of the noisy patterns. The resulting granulometric distributions are then not corrupted by noise-induced probability mass at the left of the pattern spectrum, thereby greatly …