Digital Commons Network^™

Embracing The Celestial Body, Suzanne Grantham

Theses

None provided.

An Image Fusion Algorithm For Spatially Enhancing Spectral Mixture Maps, Harry Gross

Theses

An image fusion algorithm, based upon spectral mixture analysis, is presented. The algorithm combines low spatial resolution multi/hyperspectral data with high spatial resolution sharpening image(s) to create high resolution material maps. Spectral (un)mixing estimates the percentage of each material (called endmembers) within each low resolution pixel. The outputs of unmixing are endmember fraction images (material maps) at the spatial resolution of the multispectral system. This research includes developing an improved unmixing algorithm based upon stepwise regression. In the second stage of the process, the unmixing solution is sharpened with data from another sensor to generate high resolution material maps. Sharpening …

M-Ary Run Length Limited Coding, Jian Luo

Theses

This thesis consists of two parts: 1) a result of the rationality of channel capacity for the M -ary (d, k) constraint, and 2) a software package which has been designed to aid in the development of efficient, high density channel encoders for M -ary (d, k) constrained recording code. It has been written for the platforms of IBM PC or PC compatible and Sun Workstations. The designed software in this thesis involves three steps. The first step is to calculate the capacity of a RLL code after the user has chosen (M,d,k) . The channel capacity specifies the maximum …

Modeling Of Road Vehicle Lateral Dynamics, Joseph Kiefer

Theses

The lateral dynamics of a road vehicle is studied through the development of a mathematical model. The vehicle is represented with two degrees of freedom, lateral and yaw. Equations of motion are derived for this vehicle model from basic principles of Newtonian mechanics. Both linear and non-linear models are developed. In the linear model tire lateral forces are represented by an approximate linear relationship. Transfer functions are written for the vehicle system for various control and disturbance inputs. Steady-state and transient response characteristics and frequency response are studied, and numerical simulation of the model is performed. In the non-linear model …

Almost True Stories, Paul Porell

Theses

None provided.

The Symbolic Use Of Sea Shells In Design, Sunah Ahn

Theses

This thesis report details the various stages taken in the process of selecting a suitable topic for my graduate thesis, and moving through the various stages to complete an exhibition and an art book on the topic, The symbolic use of sea shells in design. Sea shells are an important design component in all of the visual arts. My thesis is an investigation into how four types of shells (scallop, nautilus, conch, and cowrie) have been used as signifiers in a variety of applications. My goal was to create a book that could be used by designers as a quick …

Computational Analysis And Revision Of The Nayatani Et Al. Appearence Model, John Rahill

Theses

A literature search showed Nayatani 's color appearance model to be inferior to Hunt's model. The goal of this research was to determine what modifications could be made to improve Nayatani's model. The coefficients' (xi), (eta), and (zeta), in Nayatani's model represent the chromaticity coordinates of the illuminant in the fundamental primary system. These coefficients were used in calculating the effective adapting level for each cone and act as normalizing factors i n the calculation of Nayatani color space. The CSAJ data set was used to determine a baseline for Nayatani's model, and results from modifications were compared relative to …

Double-Power Transformations To Analyze Data, Erika Sato

Theses

Power transformations are commonly used in order to fit simpler and/or more appropriate models to data. These transformations are well-known and well-documented for cases where the predictor variables are not linearly constrained, unlike mixture experiments. In the case of mixture designs, however, for which linear constraints do exist, several linear models proposed in recent literature fall into a power transformation family; this suggests that similar transformations might be useful for mixture experiments, as well. The log-likelihood function for X and y, transformations on the response and predictor variables, was derived for the mixture case where the predictor variables are linearly …

Synthetic Simulation And Modeling Of Image Intensified Ccds (Iiccd), Emmett Ientilucci

Theses

Image intensifying cameras have been found to be extremely useful in low-light-level (LLL) scenarios including military night-vision and civilian rescue operations. These sensors utilize the available visible region photons and an amplification process to produce high-contrast imagery. Today's image intensifiers are usually attached to a CCD and incorporate a microchannel plate (MCP) for amplification purposes. These devices are commonly referred to as image intensified CCDs (IICCD). To date, there has not been much work in the area of still-frame, low-light-level simulations with radiometric accuracy in mind. Most work has been geared toward real-time simulations where the emphasis is on situational …

Missa Cantata, Kevin Mann

Theses

None provided.

Designing Navigation For Interactive Multimedia, Jeffrey Rascov

Theses

None provided.

African Ornamentalism, Jamie Cassavoy

Theses

None provided.

Space Adventure, David Seah

Theses

None provided.

Visual Encyclopedia Of Art History, Danielle Goueta

Theses

None provided.

Arrangement Of Form And Space, Alan Kwok

Theses

None provided.

Cfd Analysis Of Flow Field In A Mixing Tank With And Without Baffles, Carlos Rezend

Theses

A computational technique has been developed to study the fluid motion in a baffled and unbaffled mixing tank. This technique was devised for a cylindrical mixing tank using a Computational Fluid Dynamics code, FIDAP. Two model analyses are presented in this thesis: Unbaffled tank steady state analysis. Baffled tank transient state analysis. The method presented in this thesis uses subroutines incorporated into the CFD program to impose the boundary conditions associated with each baffle in the tank. These boundary conditions are rebuilt for each time step to capture the effects of the relative motion between the baffles and the impeller. …

Validation Of Rochester Institute Of Technology's (Rit's) Digital Image And Remote Sensing Generation (Dirsig) Model, Reflective Region, Russell White

Theses

The performance of RIT's Digital Imaging and Remote Sensing Image Generation (DIRSIG) model is validated. The model is robust enough to treat solar, atmospheric, target/background, and sensor interactions. It operates over the 0.28 - 28 micrometers (Ultraviolet- Long Wavelength Infra-Red) spectral region. However, this study focuses only on the 0.4 - 1.0 micrometer (reflective) region. To validate the model, reference (actual) imagery from an airborne frame sensor is compared to synthetic imagery of the same scene. This study also evaluates DIRSIG's treatment of reflectivity and recommends improvements.

Boundary Scan System Design, Craig Loomis

Theses

Given the strong competition in digital design on the national and international levels, boundary scan devices are rapidly becoming a necessary as opposed to a convenient feature on integrated circuits. This thesis serves a dual purpose. First, it demonstrates how boundary scan devices can be used to increase the testability of a circuit and it presents several factors used to quantify the cost associated with the addition of boundary scan compatibility to digital designs. Cost tradeoffs are often the most intimidating hurdle for engineers to cross when deciding if boundary scan compatibility is worth the effort. Second, it demonstrates the …

Environmental Study Indoor And Outdoor Of The Abu Dhabi Compost Plant, Jaber Eidha S. Aljabri

Theses

The transformation of municipal solid waste into compost is of double interest: on the one hand, it helps to avoid the deficiencies of natural manure, and on the other it eliminates this major polluting agent which is increasing progressively as a consequence of rising populations.

Domestic waste produced per person per annum amounts to 730 kg in Abu Dhabi city. Based on a population in 1992 of 574,745, this gives a current daily refuse collection that amounts to 1120 tons. Refuse is reported to contain a high proportion of organic materials and therefore to be suitable for recycling to produce …

Application Of Tube Settlers In Secondary Wastewater Treatment, Abdulsalam Mohamed Saleh Kamalpoor

Theses

Secondary sedimentation is one of the most commonly used unit operations in wastewater treatment plants. It is customary designed to achieve solids separation from biologically treated effluent through clarification of biological solids and thickening of sludge. As treatment plants receive increasingly high wastewater flow, conventional sedimentation tanks suffer from overloading problems which result in poor performance. Inclined plate settlers, a form of tube settlers, may have good potential in upgrading sedimentation tanks. This study was conducted to examine the possibility of applying inclined plate settlers in secondary sedimentation in order to upgrade conventional rectangular sedimentation tanks and improve their performance. …

A Study Of Trellis Coded Quantization For Image Compression, Kannan Panchapakesan

Theses

Trellis coded quantization has recently evolved as a powerful quantization technique in the world of lossy image compression. The aim of this thesis is to investigate the potential of trellis coded quantization in conjunction with two of the most popular image transforms today; the discrete cosine transform and the discrete wavelet trans form. Trellis coded quantization is compared with traditional scalar quantization. The 4-state and the 8-state trellis coded quantizers are compared in an attempt to come up with a quantifiable difference in their performances. The use of pdf-optimized quantizers for trellis coded quantization is also studied. Results for the …

Endovascular Technology: The Palmaz Intravascular Stent And The Auth Rotablator, Thomas Barg

Theses

None provided.

Investigation Of Nucleation And Heat Transfer During Subcooled Flow Boiling On Augmented Surfaces, Matthew Howell

Theses

Heat transfer characteristics of flat augmented surfaces in subcooled flow boiling with water at atmospheric pressure were obtained as functions of the surface orientation and Reynolds number. Data was collected with the heater surface temperature between 90C and 1 15C. The maximum temperature recorded by the thermocouple closest to the heater was between 200C and 220C. Five augmented surfaces and a base line plain polished aluminum surface were prepared and their performance was experimentally obtained in a 3 mm x 40 mm rectangular channel. The five augmented surfaces consisted of a sintered plain surface, microfin #1 (fin height- .132 mm, …

Super Scalar High Speed 2(Mew) N-Well Mosis Cmos Digital Halftoning Processor, Anupam Gupta

Theses

Digital halftoning is the algorithmic process for converting electronic images into bitonal images that preserves the perception of a continuous-tone image. Various digital halftoning algorithms were considered in the development of this processor on the basis of quality of image and amenability for VLSI implementation. An error-diffusion algorithm with the options of noise encoding, printer model adjustment, and edge enhancement was chosen for implementation. Since the algorithm allows for multiple independent parallel processors to operate on the same image, the system is capable of super scalar processing. The processor is intended for an 8-bit input (256 gray levels). The processor …

Teletype Network Communication Device, Mark Clyman

Theses

None provided.

Pattern, The Visual Mathematics: A Search For Logical Connections In Design Through Mathematics, Science, And Multicultural Arts, Seung-Eun Lee

Theses

None provided.

Atomic Oxygen Resitant Zirconium Containing Polyimides, Liling He

Theses

The objective of this thesis is to improve the atomic oxygen resistance of polyimide Kapton by incorporating zirconium components. Toward this end, zirconium complexes/polyimide "composites",. zirconium-containing poly(maleimide)/ polyimide "blends" and polyimide polymers with zirconium complexes as "pendants" have been investigated. Tetra(acetylacetonato)zirconium(IV), Zr(acac)4_ has been identified as the best zirconium-containing atomic oxygen resistance component for polyimide composites with good film uniformity, flexibility and tensile strength. A 24-layer 10% Zr(acac)4/PI (mol/mol) composite film shows a 20 fold improvement of atomic oxygen resistance over pure polyimide. However, a 10% by mole upper limit of Zr(acac)4 in PI was encountered, above which films become …

Bringing Ideas Back To The Evolution Of Design, Ayca Tuzmen

Theses

This thesis is an exploration into the evolution of design. It attempts to develop an awareness of the effectiveness of what we do as designers and users to improve design. To achieve this purpose, it elaborates on some of the implications of paradigms which have emerged in design evolution. It presents some of the evolutionary theories and their analogies. These theories and analogies develop a view of design evolution - a conception of design as a process which moves from a lower to a higher state. With this conception, concern is directed at the identification of past and current design …

Usability Of Hypertext : Factors Affecting The Construction Of Meaning, Kathryn L. King

Theses

One type of hypertext application, information retrieval, has become increasingly popular and accessible due to the explosion of activity occurring on the World Wide Web. These hypertext documents are referred to as web sites. Readers can now access a multitude of web sites and retrieve a wide variety of information.

The uniqueness of a hypertext document centers around the concept that text is broken into an array of non-sequential text chunks, or nodes, which are connected through links. The hypertext reading can be considered an interactive experience requiring the reader to effectively navigate the document. The potentially complex link and …

Environmental Communication : Theory And Practice, Mary Mccarney Mcmanus

Theses

The present study examines the relationship between environmental communication theory and practice. The focus of the case study is to examine the formal elements of an environmental document--the Industrial Pollution Prevention Planning guidelines published by the New Jersey Department of Environmental Protection (NJDEP)--and the process by which this document was created. This study of product and process allows a methodology to be developed by which the complexities of environmental communication may be better understood.