Digital Commons Network^™

Synthesis And Characterization Of Novel Poly(Ester-Imide)S Containing Chiral Centers, T. Edwin Freeman

Theses

This Thesis project describes the preparation of a series of novel Poly(ester-imide)s containing chiral centers, and their characterization for liquid crystallinity. The synthetic approach towards the incorporation of the chiral centers in the polymer backbone involved the reaction of α-amino carboxylic acid with trimellitic anhydride (TMA) or pyromellitic dianhydride (PMDA) to prepare the imide dicarboxylic acid monomers, which were melt polymerized with the respective diols containing two, three and five to ten methylene groups to obtain the Poly(ester-imide)s. The monomers were characterized by infrared spectroscopy, elemental analysis and polarimetry. Characterization of the polymers was done by dilute solution viscosity, infrared …

An Impressionist Form Of Oriental Landscape Images, You-Sook Choi

Theses

Not Included

Application Of Sensors In An Experimental Investigation Of Mode Dampings, Richard Hiram Berg

Theses

The subject of this investigation is the method of calculating material damping of a cantilever beam. Damping is the mechanism by which the vibrational energy is gradually converted into heat or sound. The loss factor, otherwise known as the damping factor, is part of the global properties of a structure which can be identified from its frequency response measurements. Experimental frequency response measurements require three main components: a source of excitation, sensors, and analyzer. It is the objective of this thesis to investigate the effect of different types of exciters and sensors on the frequency response measurement of the cantilever …

A Material Cost And Weight Comparison Of Shipping Containers Using Ect Versus Burst Strength For Room Air Conditioners, Anne Margaret Mcsweeney

Theses

This research compares the material cost and weight of using edge crush specifications for the selection of a Whirlpool Corporation room air conditioner shipping container verses Mullen burst strength specifications. For the purposes of this thesis, the air conditioner studied is referred to as Product "M". The following presumptions are made. The material cost of using an ECT performance specified container is lower than the material cost of a Mullen specified container. The material weight is less using an ECT specified shipping container rather than a Mullen specified shipping container. The data generated first are the strength of the product …

Simulation Of A Heat Pump Model Using Siman, Venkatesh Sundarraj

Theses

A Heat pump is a system that follows the vapor compression cycle in which a vapor is compressed, then condensed to a liquid, following which the pressure is dropped so that fluid can evaporate at a low pressure. The system is considered to be a continuous system as there is a refrigerant whose state changes continuously throughout the system. This thesis work presents the application of the Simulation program SIMAN in a continuous modeling environment. The Refrigeration cycle was chosen as the Heat Pump as there is a continuous flow of the refrigerant through the system and hence was an …

The Suitability Of Polyethylene Terephthalate Copolyester For Radiation Sterilized Dry Small Volume Parenterals, Steven M. Drucker

Theses

Small volume parenterals (SVP) are typically terminally sterilized through autoclaving. This technique works when the containers are filled with a liquid. However, in the case of sterile powders, autoclaving is not a viable method nor is dry heat since most products can not withstand 2 50C for a half hour. Thus gamma irradiation may be an acceptable method to terminally sterilize this class of product. One of the drawbacks of gamma irradiation is that it will discolor glass which is currently the package material of choice due to superior barrier properties and relative inertness. This paper explores the possibility of …

A Study Comparing The Moisture Barrier Characteristics Of Flat Liners Versus Stoppers In Continuous Thread Closures On Glass Viles, William L. White

Theses

The combination of glass vial, elastomeric stopper, and aluminum crimp seal represents one of the principal packaging systems used to package diagnostic reagents, ophthalmic and veterinary medicines, and pharmaceutical products. This work states that elastomeric flat liners are an alternative to traditional stoppers. To confirm this position, several comparative moisture transmission evaluations are conducted to contrast the barrier performance of glued flat liners against stoppers in continuous thread closures on glass vials. After a review of several standard packaging integrity testing methods, this thesis demonstrates the use of coulometric titration as an alternative package system testing methodology. Coulometric titrators are …

Analysis Of Packaging Based Determinant Attributes For Minimally Processed Vegetables: A Food Service End-Use Study, James A. Myers

Theses

The objective of this study was to determine what packaging based attributes most influence the purchasing decision of foodservice operators. The study was limited to those packaging attributes associated with minimally processed vegetables. A survey instrument was used to poll operators from various segments of the foodservice industry. Factor analysis was employed in an effort to identify attributes with degrees of communality. It was determined that attributes associated with the utility function of foodservice packages were of primary concern. These attributes were linked to the challenges of handling products in the foodservice environment. Factor loadings were significant on two other …

Xbuild: Flexible, Generic, X-Based User Interface Tools, Marcus Cannava

Theses

Not provided.

Optimal Morphological Filters, Vivek Swarnakar

Theses

The design of optimal morphological filters, in the binary or gray scale domain, involves a computationally intense search procedure that, in practice, can be intractable. The present work provides a practical method for optimal morphological filter design that is based on the statistical estimation theory and lattice theory. A link is made between optimal morphological filter and the conditional probability distribution. For a given conditional probability distribution a morphological filter may or may not exist. If a morphological filter exists, then the method designs the one that is optimal among morphological and all other filters. If an optimal morphological filter …

An Intelligent Tutoring System For The German Language, Kenneth E. Staffan

Theses

This thesis report describes the design and implementation of a prototype Intelligent Tutoring System (ITS), intended to assist students of the German language. Very early in the study of a foreign language, the student is faced with the difficulties of sentence construction. Not only are there numerous rules and combination to deal with, but it is difficult to verify attempts when the teacher is unavailable. Individual words can be looked up in a dictionary, but the student must often rely on stumbling across a sentence of similar construction in order to verify a trial sentence. A variety of Computer-Assisted Language …

Study Of The Temperature Dependence Of The Intrinsic Viscosity [Nu] For Polystyrene And Poly (Styrene - Co - Maleic Anhydride), Rong Su

Theses

The Mark-Houwink-Sukaroda (MHS) equation [r|J = K Mva is a very important relationship to relate polymer dilute solution's intrinsic viscosity and polymer's viscosity average molecular weight. But for a wide range of polymer (copolymer) - solvent systems, the constant K and exponent a values are usually not sufficiently available. Fox - Flory and Van Krevelen dilute solution theories are employed to correlate K and a values under different temperatures therefore prove that MHS constant K and exponent a are temperature dependent for polystyrene and styrene-co-maleic anhydride. For polystyrene, the exponent a value changes from 0.7165 at 25C to 0.7327 at …

Nonlinear System Identification And Prediction, Manu K. Mathew

Theses

Not provided.

Ces't La Vie, Andrew Thornton

Theses

None provided.

What Happens To A Dream Deferred?, Alan H. Gordon

Theses

I believe that everyone must handle things in their own way to remain true to their goals and themselves. I have strived to stay loyal to this idea during my thesis, because any superficial attempts at representing my views on racial subjects have fallen short of honesty. An honest representation of qany subject cones form the heart, and is a fresh and exciting image. I motivated myself to produce as much work as I was phsically capable of while striving to maintain a high level of aesthetic quality. In order to reduce confusion and convey my ideas clearly, I have …

Efficient Software Implementation Of The Jbig Compression Standard, Craig M. Smith

Theses

JBIG is a new binary image compression standard that is designed to handle both text and halftoned documents. It significantly outperforms the CCITT Group 3 and Group 4 standards especially on halftoned documents. The JBIG standard is based on an arithmetic encoder, and it features adaptive probability estimation, adaptive templates, and three different types of prediction. It also allows either sequential or progressive compression of image data. A brief discussion of information theory is given as it applies to image compression. The JBIG algorithm is described, and several techniques are developed to efficiently implement the algorithm in software. The most …

A Feasibility Study Of A Recycled Paper Scoop, A Dosing Device For Synthetic Powder Laundry Detergents, Patrick Seo Thin Lee

Theses

This research assessed the consumer acceptance of a recycled paper scoop versus the existing polystyrene (PS) scoop as a dosing device for synthetic powder laundry detergents. Specifically: (1) Were the consumers aware of and in agreement with the environmental benefits of a recycled paper scoop versus the current plastic scoop? (2) Did consumers consider a recycled paper scoop as an acceptable replacement for the current plastic measuring scoop? The implementation of a recycled paper scoop would reduce packaging waste by approximately 20% by weight and a significant source reduction through decreased consumption of raw materials. Additionally, it would provide a …

Ramsey Numbers Involving A Triangle: Theory And Algorithms, Xia Jin

Theses

Ramsey theory studies the existence of highly regular patterns in large sets of objects. Given two graphs G and H, the Ramsey number R(G, H) is defined to be the smallest integer n such that any graph F with n or more vertices must contain G, or F must contain H. Albeit beautiful, the problem of determining Ramsey numbers is considered to be very difficult. We focus our attention on efficient algorithms for determining Ram sey numbers involving a triangle: R(K3 , G). With the help of theoretical tools, the search space is reduced by using different pruning techniques and …

A Reference Guide To Jpeg Compression, Daniel P. Goodenow

Theses

Not provided.

Process For The Development Of A Repulpable Barrier Laminate, Brian Bigler

Theses

The purpose of this study was to develop a process to develop a multi-material paperboard based laminate carton and membrane. This includes replacing the existing paperboard-polyethylene-foilpolyethylene structure used in the Foldcan. The new structure must meet the current barrier requirement without contaminating the pulp and finished paperboard. Standard requirements of repulpablility for recycled paperboard mills must aslo be met. Research has been conducted to identify all current materials. Potential replacement material for traditional, commonly laminated materials as well as newly developed materials have been studied. A possible new paperboard based lamination which could be easily separated and recycled by all …

Word Hypothesis From Undifferentiated, Errorful Phonetic Strings, R. Thomas Sellman

Theses

This thesis investigates a dynamic programming approach to word hypothesis in the context of a speaker independent, large vocabulary, continuous speech recognition system. Using a method known as Dynamic Time Warping, an undifferentiated phonetic string (one without word boundaries) is parsed to produce all possible words contained in a domain specific lexicon. Dynamic Time Warping is a common method of sequence comparison used in matching the acoustic feature vectors representing an unknown input utterance and some reference utterance. The cumulative least cost path, when compared with some threshold can be used as a decision criterion for recognition. This thesis attempts …

A Study Of Time And Temperature Variables Affecting Apolipoprotein B-100 On Iodipamide Ethyl Ester Particles, Deborah J. Alberty

Theses

The hypothesis tested in the epitope stability study is that apo B bound to a synthetic core of iodipamide ethyl ester (IDE) particles retain stability, as detected by immunoreactivity of apo B epitopes with two monoclonal antibodies. The mAB 3.01 binds to the carboxy terminal end of apo B-1 00. The mAB T4 binds to the T4 peptide fragment at the amino terminal end of both apo B-1 00 and apo B-48. Stability of LDL-coated IDE was evaluated over 40 days when stored at -20C, 4C and 25C. Stability of reconstituted lyophilized IDE was evaluated over 42 days, starting with …

An Approach To The Analysis And Deisgn Of An Intelligent Tutoring System Using An Object-Oriented Methodology, Jeanne C. Hiesel

Theses

A true Intelligent Tutoring System is difficult to produce in today's technological environment. This thesis reviews various theoretical methods and strategies that could be employed in performing the analysis and design of an Intelligent Tutoring System. An overview of the basic concepts of Object-Oriented Analysis and Design are provided in this thesis. The notation system provided by these concepts are utilized. The Object-Oriented Analysis and Design methods that are employed create a basis for an implementation of an Intelligent Tutoring System.

Robotic Path Planning With Obstacle Avoidance, Barbara T. Switzer

Theses

Planning can be used in a variety of applications. In this paper we will discuss those planning techniques that Apply to the task of robotic path planning - Here a planner is used to generate "paths" which a robot can follow to maneuver from some point A to another point B, while at the same time avoiding all obstacles. All approaches discussed in this paper are based on viewing the robot as a sphere . By assuming this , the need to consider the robot's orientation as it moves along a proposed path is eliminated . Another requirement is that …

Retrieval From An Image Knowledge Base, James Janicki

Theses

With advances in computer technology, images and image databases are becoming increasingly important. Retrievals of images in current image database systems have been designed using keyword searches. These carefully designed and handcrafted systems are very efficient given the application domain they are built for. Unfortunately, they are not adaptable to other domains, not expandable for other uses of the existing information and are not very forgiving to their users. The appearance of full-text search provides for a more general search given textual documents. However, pictorial images contain a vast amount of information that is difficult to catalog in a general …

A Study Of The Effects Of Operations That Lower The Efficiency Of A Packaging Line Using Systems Simulation, Harmeet Taneja Singh

Theses

Not provided.

A Theoretical Model For Biased Superlattice Devices, Michael Ferner

Theses

A model describing the subband structures and tunneling characteristics of superlattices is presented. The model solves the envelope function equations by the transfer matrix technique. The results are codified in a Fortran program, and the model is applied to several structures.

Superlattice have been studied extensively, however many new structures await investigation.

This model is presented as a preliminary design tool. The program allows a designer to do preliminary calculations. This type of investigation guides a designer toward a goal by making possible a large number of calculations on many different structures.

Jan Tschichold: Contrast In Theory, Thérèse Hannigan

Theses

Jan Tschichold was a brilliant typographer who dramatically influenced graphic design and printing with his contrasting theories of design. He began as a proponent of the so-called "new typography" and then pursued the revival of more traditional styles. Because Tschichold's diametrically opposed theories about typography continue to appeal to a large audience, this exhibit of his evolution as a typographer is useful and important. This exhibit is an overview of his writings and typography concentrating on his dramatic stylistic changes. The exhibit is accompanied by a poster, annotated catalog, and descriptive labels.

The Contemporary Vessel, Alice Carroll

Theses

None provided.

Introspection Within The Organic, Christina K. Campbell

Theses

None provided.