Digital Commons Network^™

Parsing Natural Language, Leonard E. Wilcox

Theses

People have long been intrigued by the possibility of using a computer to "understand" natural language. Most researchers attempting to solve this problem have begun their efforts by trying to have the computer recognize the underlying syntactic form (the parse tree) of the sentence. This thesis presents an overview of the history of syntactic parsing of natural language, and it compares the major methods that have been used. Linguistically, two recent grammars are described: transformational grammar and systemic grammar. Computationally, three parsing strategies are described and compared: top-down parsing, bottom-up parsing, and a combination of both of these methods. Several …

A Resource System Package For Reservation Systems, Gary Foley

Theses

The Resource System Package is a software tool developed to aid in the design and use of reservation system databases. The package is designed to automate the creation of a reservation database for arbitrary objects and to facilitate ease of maintenance and updating of existing databases. Databases set up via the resource system are maintained through the Mistress Relational Database System, although no specific knowledge of Mistress is required of either the database designer or the users of the database. The package is menu-driven for ease of use. This package consists of two separate programs, a Resource System program and …

An Investigation Of Film And Contact Screen Effects In The Halftone Dot System, Michelle Bushnell

Theses

A model was tested which, given a certain film and contact screen, can predict halftone modulation transfer functions. A relationship was derived which, given the halftone MTF, can predict the halftone dot gradient for the system.

The Design And Construction Of A Hand Lithography Press, Inexpensive To Make And Easily Transportable, Susan Raab

Theses

Not Included

A Design Of A Master Of Arts In Education Program For The Teaching Of English As A Second Language, Susan Relyea

Theses

This study is undertaken in an attempt to create a viable curriculum for a Master of Arts in Education for the teaching of English as a Second Language. The field of English as a Second Language has evolved into a profession unto its own only in the last thirty years and has been attracting professionals who have had little or no training in pedagogy or English as a Second Language methodology. Much has been learned about the field in the past thirty years. Second language teachers must have special training that is different from English teachers and foreign language teachers. …

The Effects Of Selected Value Clarifying/Analyzing Strategies On The Self Concept And Critical Reading/Thinking Skills Of Low Achieving Ninth Grade Students, Janet Hoester Wies

Theses

The purpose of the study was to investigate the effects of selected value clarifying/analyzing strategies on the self concept and critical reading/thinking ability of low achieving ninth grade students. The clarifying strategies are designed around seven subprocesses of a value clarifying process developed primarily by Dr. Louis E. Raths to assist students in acquiring skill in choosing, prizing, and acting on value related issues. The analyzing strategies are designed around six subprocesses of a value analyzing process developed by Jerrold R. Coombs and Milton Meux to assist students in acquiring skills in evaluative decision making.

The major research hypotheses are: …

Means Of Lowering The Contrast Of Association Product Printing Plates, Ming-Hwa Wang

Theses

The Association Product is a photosensitive coating for continuous-tone litho plates (It can also be used as a plate coating for halftone printing). It consists of phenolic resin and poly(ethylene oxide) and is photosensitized by a water soluble sensitizer. Continuous-tone lithography has better quality potential than the halftone process. Because the halftone process converts the continuous-tone image of the original into small dots of varying sizes, it thus inherently degrades the image quality and adds time and material costs in screening. The water soluble sensitizer converts the hydrophilic Association Product to an oleophilic state in direct proportion to exposing energy, …

The Graphic Arts Industry In Mexico - Training And Educational Aspects, Orbe Garcia

Theses

THE GRAPHIC ARTS INDUSTRY IN MEXICO - TRAINING AND EDUCATIONAL ASPECTS Purpose of the Study: The general purpose of the study was to identify the training/educational needs existing in the graphic arts industry in Mexico and to make an assessment of the present situation and how those needs are being met. Specific purposes were to determine how the existing training/educating plans and programs are dealing with the influx of new technology being imported; to examine the type of new technology being purchased, by which sectors and the reasons for capital and equipment expenditures by these sectors; to analyse what problems …

Design, Tuning And Performance Evaluation Of An Automated Pulmonary Nodule Detection System, William Lampeter

Theses

Radiologists miss about 25-30% of all pulmonary nodules smaller than 1.0 cm. in mass screenings. A system for the automated detection of the pulmonary nodule based on that of Hallard has been designed, tuned, and tested on a 43 chest radiographs [Ballard, 1973). The goal of this system is to aid the radiologist in locating a pulmonary nodule by indicating a few sites in the radiograph that are most likely to be nodules. Computer image analysis programs that respond to specific types of anatomic features have been devised and are incorporated in a pattern recognizer, which uses linear discriminant analysis …

Nonlinear Analysis Of Shear Walls And Shear Panels By Finite Element Method, Erhan Atay

Theses

The objective of this work was to determine the feasibility of applying the Finite Element Method to Nonlinear Analyses of Shear Walls and Shear Panels.

Various existing methods are reviewed and discussed.

These studies determined that the application of Finite Element Method to Nonlinear Analysis of Shear Walls and Shear Panels is being misused in many cases but is very practical and promising where justified. However more studies are needed for the manner of modeling to be used to connect the wall to beam and slab elements that frame into that wall. To model the coupled beams as plane stress …

Optical Sculptures, Alexander Syndikas

Theses

None provided.

Development Of A Software Package To Generate Screen Maintenance Programs For Use On Qantel Computers, Jane Keller

Theses

None provided.

Analysis Of Ink Film Thickness On Screenless Lithographic Plates By Microscopy, James Spruill Summers

Theses

Printing without the use of a halftone screen pattern offers many advantages, although most processes utilized are impractical for long run commercial printing. Screenless lithography provides a practical means of making unscreened reproductions. While screenless lithography has been in use for many years, its working mechanisms have only recently been explained. Past studies have investigated many of the factors which contribute to the continuous tone effect of screenless printing, but none have scientifically determined if ink film thickness variation is a contributing factor. Positive working lithographic plates were exposed to control scales, processed, inked, and allowed to dry. These plates …

Song Lyric As The Source Of Character Jacque Brel Is... And The Hostage: A Comparative Analysis, Dianah Dulany

Theses

No abstract provided.

Adaptive Delta Modulation, Aliuddin Ahmad

Theses

The objective of this thesis is the study of the performance of instantaneously companded adaptive delta modulation (ADM) systems in comparison with linear delta modulation (LDM) in terms of signal to quantization noise ratio (SNR). Various schemes for ADM are discussed and their advantages and disadvantages are indicated. SNRs are calculated by simulation, with IBM's continuous system modeling programming (CSMP) language being used as a tool for simulation. LDM, first and second order constant factor delta modulation (CFDM), has been simulated and responses for different types of input signals are presented.

A Modified Unifac Model For The Prediction Of Henry's Constants, Carlos Alberto Marques Antunes

Theses

A group-contribution model for the correlation and prediction of Henry's constants in single solvents is presented. The mode: involves a one-parameter per gas/ solvent group pair UNIFAC expression extended to incorcorate free volume effects. The model is applied to three gases, CH₄, N₂, and O₂ in alkane solvents and in water. Good results, including a successful description of the temperature dependency of the Henry's constants, are obtained with typical accuracy of ± 10%.

Paper Coating Constituents And Their Influence On Chemical Ghosting, Craig Harmsen

Theses

For many years the printing industry, specifically sheetfed offset and letterpress printers, have been dealing with the problem of chemical ghosting. Traditionally it has been, a problem associated with drying oil inks. More recent research concludes that ghosting is also affected by the permeability of an adjacent substrate. This thesis examines paper coating constituents, their degree of concentration, and what influence they play- with regards to ghosting. A quickset drying oil ink has been found which when subjected to the proper laboratory conditions will display a high degree of colored ghosting. The thesis indicates the method of creating ghosting and …

Alphabet Soup, Beth April Smolev

Theses

None provided.

The Value Of Antiquities: Historical Development And Evaluation Of Trends In The Current Market Through Graphic Analysis And Sales Data Compilation, Mary Thornton Holton

Theses

The purpose of this project will be to examine some of the most central issues in the evaluation and methodology for valuing the category of fine arts known as antiquities. This category covers several historical periods and includes artifacts which originate anywhere in the present countries of Egypt, Greece, or Italy from 4000 BC in the pre-dynastic ages of Egypt through the various dynasties of the Pharaohs, through the Minoan, Mycenaean, Archaic, Classical, and Hellenistic ages of Greece, and through the times when the Roman Empire rose and dominated practically the entire known world. The final date which defines antiquities …

The Value Of Antiquities: Historical Development And Evaluation Of Trends In The Current Market Through Graphic Analysis And Sales Data Compilation, Mary Thornton Holmes

Theses

Unavailable.

Investigation Of The Electronic And Thermal Rearrangement Properties Of Spiro[2,4]Hepta-4,6-Dienes, Raymond K. Crandall

Theses

The mechanism of thermally induced hydrogen and alkyl migrations in suitably substituted cyclopentadienes have been extensively studied. Although the course and mechanism of alkyl shifts in cyclopentadienes have been investigated, there is currently a lack of agreement on the precise mechanisms of alkyl migrations. It is apparent that the mechanism is largely dependent on the nature of both the migrating substituent and upon other substituents in the molecule and, in some cases, the shift may occur by more than one competing mechanism. Alkyl shifts in spiro substituted cyclopentadienes have been clearly shown to proceed via a conceited pathway. However, the …

Polymerization Of Disubstituted Conjugated Dienes: Synthesis Of 1, 3-Diphenyl-1, 3-Butadiene, David Allen

Theses

1, 3-Diphehyl-l, 3-butadiene 3 has been found to rapidly undergo the Diels-Alder reaction at room temperature to yield 1, 3, 4-triphenyl-4-styrylcyclohexene 10. The dimer was characterized by elemental analysis, infrared and nuclear magnetic resonance spectrosopy. The isomeric diphenylbutadienes were of interest as a model system to study the interaction of steric hindrance and electronic effects in the homopolymerization of disubstituted butadienes. Several synthetic routes to an appropriate tosylate for base catalyzed elimination at low temperatures to avoid dimerization of the monomer were explored and found unsuccessful for various reasons. The monomer was trapped as an iron tricarbonyl complex. This complex …

Informational Needs Within A Decision Making Model For Curriculum Development, Sandra J. Rowell

Theses

This thesis analyzes informational needs within a decision-making model for curriculum development, focusing on the Francis Howell School District's shift from decentralized to centralized curriculum in the 1970s. The study uses Lipham's decision-making model, which involves recognizing a problem, gathering information, considering alternatives, making a choice, and evaluating the outcome.

The author, a member of the planning committee, provided information and suggestions for the study, including criteria for curriculum guides, sample guides from other districts, and a review of goals and objectives. The thesis also explores different value bases and curriculum theories, emphasizing the importance of understanding these values in …

Dyad: Biography Of A Relationship, John Fergus-Jean

Theses

None provided.

The Atmospheric Photochemical Stability Of Cc1f2no, Cc12fno, Cc1fno2, And Cc12fno2, George Fazekas

Theses

CC1F2N0, CC1F2N0, CC1F2N02 and CC12FN02 were prepared and purified in the laboratory. Three methods for the preparation of chlorodifluoronitrosomethane were evaluated: 1) decarboxylation of the sodium salt of chlorodifluoroacetic acid in the presence of nitrosyl chloride, 2) nitrosation of chlorodifluoromethanesulfenylchoride and 3) photolysis of bromodichlorofluoromethane in the presence of nitric oxide. The vapor phase decarboxylation of the sodium salt of chlorodifluoroacetic acid in the presence of nitrosyl chloride gave chlorodifluoronitrosomethane with the highest yield and purity. Because the sodium salt of dichlofluoroacetic acid was not available to utilize in a similar manner, dichlorofluoronitrosomethane was prepared from the reaction of dichlorofluoromethanesulfenylchloride …

The Design And Production Of Graininess Samples Using An Ordered Array Binary Imaging System, Paul W. Jones

Theses

A technique is described for producing graininess samples using an ordered array binary imaging device with subsequent photographic and lithographic steps. Such samples could be combined to form a visual scale for use in the rapid assessment of solid area noise of electrophotographic images. The potential advantages of this process include high volume production capabilities and the ease of varying image parameters over a wide range. Analytical models for mean density and Wiener spectrum scale value, WS(0), are developed for the ordered array system and are shown to have general applicability. However, these models are neither precise nor accurate enough …

The Application And Analysis Of An Antireflection Coating On A Multilayer Resist System To Generate A 1.0 Μm Aluminum Line Over 0.5 Μm Sio2 Step, Chung-Ta Wu

Theses

An antireflection coating (ARC) containing polyvinyl alcohol and two dyes was applied to a substrate to form a new multilayer resist system.

Based on the results of the application of the ARC on a planar aluminum substrate, an increase of the latitude of exposure and an improvement of the resist image quality were found.

The ARC had a specific concentration of dyes and a specific thickness. The image was a 1.0 µm line and space pattern. By using the ARC, even though the resist thickness varied from 1.2 µm to 1.5 µm, the resulting 1.0 µm image remained within a …

On The Use Of Cognitive Principles And The Personalized System Of Instruction In Computer Science Education, James Bradley

Theses

None provided.

Theoretical Determination Of Optimum Split-Filter Exposures For Color-Correction Masks, Jang-Fun Chen

Theses

Workers have found that a split-filter mask made by consecutive exposures through red, green, and blue filters provides better color correction than a mask exposed through a single filter. Nevertheless, split-filter masking has never been adopted in the direct screen separation method. This may be due to the difficulty of determining the opti mum red: green: blue split-filter exposures. This thesis ad dresses the problem of determining the optimum split-filter ratios needed to expose masks for the direct screen sepa ration method. Optimum exposure ratios were determined with the as sistance of a digital computer by systematically trying out 231 …

Nicaragua: A Society In Transition, James Mason Stillings

Theses

Between December 1980 and March 1981, I spent three months in Nicaragua undertaking a documentary thesis project for a Master of Fine Arts degree in Photography. Initial preparation for the trip began in May 1980. My thesis exhibition was held October 11-16, 1981. The purpose of the thesis was to "integrate creative expression with social/political concerns by photographing aspects of societal change that have grown out of the popular revolution in Nicaragua." This report is an accounting of that project from its inception to its completion. The project has been a rewarding experience, full of learning and growth. I have …