Digital Commons Network^™

Proposal And Investigation Of A Method For Measuring Process Color Variation Via Reflection Densitometer, Russell Harris

Theses

This thesis proposes a method of using reflection density readings taken with a conventional graphic arts densitometer to provide a numeric measure of the visual difference between a sample press sheet and a reference sheet. This numerical measure was developed based on the theory that human response to variation in process color printing is more affected by changes in the proportions of process inks to each other than by variation in the overall inking level of the press sheet. The thesis then goes on to explain how the proposed system was tested. First, a set of color samples was generated. …

Pattern Generation And Fault Detection In Digital Circuits Using A Microprocessor, Syed Riffat Ali

Theses

The main object of this Professional Project was to establish a microcomputer based system which could detect faults in digital circuits. Hardware and software for the Motorola 6800 microcomputer system was fully developed. Node level diagnostic programs were then used to pump known "Bit Patterns" into digital circuits and responses recorded via Pseudorandom binary sequence generator using CRC code. This method also known as "Signature Analysis" was then applied to detect faults successfully in Universal Asynchronous Receiver Transmitter or UART Circuits.

Study Of Compositional Changes (Altered Layer) In (Hg,Cd)Te Targets Sputtered With Hg Vapor, Robert Granville Bourne

Theses

Six mercury cadmium telluride targets (5.74 cm diameter) with six polycrystalline (Hg_0.8 Cd_0.2 )Te ingots (1 x 3 x 0.7 cm ± 20%) epoxied on them, were r.f. sputtered in an MRC-8800 triode system for 1, 2, 3, and 5 minutes. The six sputtering runs were made with 3 different Hg pressures of 1.0, 1.25, and 1.6μm while the uniform target power density was kept constant at 7.7W/cm². After sputtering a target, Br₂ +CH₃OH was used to chemically etch the sputtered ingots to different depths. The surface composition of the etched ingots was …

Investigation Of Mental Workload In A Visual Inspection Task, Michel Alfandari

Theses

This thesis consists of an investigation of the "mental workload" involved in a visual inspection task. A short-term laboratory experiment was conducted on twenty test subjects to study the effects of three typical job-related factors encountered in mental workload situations: load stress, time stress, and motivation. These effects were assessed through the subjects' performances as measured by speed and accuracy data. The analysis of the results revealed that an increase in load stress deteriorates both speed and accuracy, whereas time stress improves speed but only at the expense of accuracy. The expected positive influence of motivational factor (cash prizes) was …

Prediction Of Heats Of Mixing By Group Contribution Methods, William Walter Rupp

Theses

Three group contribution methods used to predict heats of mixing were tested: AGSM, UNIFAC with temperature dependent parameters and the modified UNIFAC of Skjold-Jor-gensen et al. The modified UNIFAC provided the best results and was adopted in this study. Primary parameters were obtained for ten groups with alkanes. The simultaneous correlation of cyclic and straight-chain alkanes gave poor results. Attempts to improve the error by changing the group area parameter for cyclic CH₂ failed.

A major problem in correlating the experimental data was the multiplicity of roots. The best set of parameters was obtained by using a grid approach …

Thermal Rearrangement Studies Of Deuterium Labeled Dibenzo [A,E] Cyclooctatetraenes, Charles W. Wenger

Theses

In an attempt to further substantiate the findings of Stiles and Salisbury on the rearrangement of aryl disubstiuted dibenzo [a, e] cyclooctatetraenes a new pair of derivatives were synthesized. The 5,6 and 5,11 dideuteriodibenzo-[a,e] cyclcoctetetraenes were prepared. The 5,6 derivative was prepared starting with dibenzo [a,e] cyclooctene-5,6-dione. The 5,11 derivative was prepared starting with o-tolualdehyde. In the case of the 5,6 derivative the deuterium was introduced by a LiAlD₄ reduction of the dibenzo [a,e]-cyclooctene-5,6-dione. The 5,11 derivative had been labeled with deuterium in the final step during the Wittig reaction. The use of methanol-d₁ as the solvent in …

The Decorative Imperative, Harriet Jaffie

Theses

None provided.

Thesis, George Ring

Theses

None provided.

Wearable Art, Elizabeth Garver

Theses

None provided.

Generation Of Software To Produce A Landsat Scene Comprised Only Of Pseudo Invariant Features, Martha C. Leahy

Theses

The purpose of this thesis work was to provide soft ware in Fortran programming language that will read, print and process data contained on Landsat computer compatible tapes. The programming was done on the Xerox Sigma 9 computer at the Rochester Institute of Technology. The processing involved reading and re-registering fractions of files and performing simple numeric operations on the digital spectral radiance values of individual picture elements. The result was a fraction of a Landsat scene containing pixels that are classified as vegetation, water, mixed elements or invariant features.

Secret Gardens, Mark A. Fisher

Theses

Unavailable.

Opinions Of Hollenbeck Junior High Students Regarding The Year-Round Schedule, Teri Timmons

Theses

This study, conducted by Teri Timmons in partial fulfillment of a Master of Arts in Education degree at The Lindenwood Colleges (1982), explores the opinions of junior high students at Hollenbeck Junior High School in the Francis Howell School District regarding Year-Round Schooling (YRS) versus the Traditional School Schedule (TSS). Amid growing interest in alternative academic calendars due to rising student populations and limited funding for new educational facilities, this research sought to evaluate student attitudes toward these two scheduling models.

A random sample of 35 students who had experienced both YRS and TSS during their elementary years was surveyed …

A Survey On Homework With A View Towards Developing District Guidelines For The Elementary School, Ginger Kinion

Theses

This researcher has been interested in the subject of homework for some time and has felt the pressure from parents to provide more homework for students . Many school districts do not provide homework policies or guidelines for teachers . The purpose of this study was to find answers to such questions as: 1) What has research found about the effectiveness of homework in the elementary schools? 2) What are the opinions of parents, students , and educators on the subject of homework? 3) What are the advantages and disadvantages of homework? 4) How can a homework policy be developed …

A Study On The Use Of Music To Teach Locational Skills In Library Use To Third Grade Students, Nancy Karl

Theses

This study addresses the question : Will the use of music activities to t each locational skills in library use to third grade students be more effective in helping students to acquire and retain these skills than a more traditional multi-media approach?

Locational skills in this study include: alphabetical order, correct use of the card catalog, location of fiction and non-fiction books, recognition of different types of reference materials and their uses and the ten Dewey Decimal classifications.

The music activities include folksongs and original songs and coordinating activity worksheets. The multimedia approach uses sound filmstrips, charts and catalog cards …

Factors Influencing Flexographic Tone Reproduction Including Types Of Printing Plate Materials Used, Bruce Capriotti

Theses

During the past three years, a number of photopolymer plates for flexographic printing have appeared on the market. The use of such a plate greatly simplifies flexographic platemaking by reducing the process to a level similar to that of a presensitized plate for offset lithography. A series of experiments were conducted to determine whether or not there were significant differences in the areas of half tone dots in different areas of the tonal scale on different types of flexographic plate materials all made from a single negative with a specially designed test object on it. Assuming significant differences were found …

An Investigation And Implementation Of Recommendation X.25 On A Motorola M6800 Based Network, Louis Nyerges

Theses

A subset of the Recommendation X.25 protocol is implemented on a two node network. Each node accepts and translates data from the user in a sequential fashion into the appropriate protocol structure for transmission to another node. Each node has the capability of full duplex operation. The hardware is built around a Motorola M6800 microprocessor employing a minimum of 4096 words of random access memory and two asynchronous ports: one for communication with the user and the other for communication with the network. The software on each node contains the protocol programs and a multitasking monitor which is used to …

Effect Of Stabilizers On Gold Sensitization, Douglas E. Corbin

Theses

Previous work has shown evidence that some emulsion stabilizers can prevent rearrangement of adsorbed silver sulfide to a photographically active form. Full gold plus sulfur sensitization may be achieved by simultaneous introduction of the sensitizers or by adding gold after sulfur sensitization. As gold sensitization of an already optimally sulfur-sensitized emulsion may instead involve a direct chemical reaction, the effect of stabilizers on gold sensitization may not parallel their effect on sulfur sensitization. The stabilizers 6-methyl-4-hydroxy-l , 3 , 3a , 7-tet razaindene and l-phenyl-5-mercaptotetrazole retard but do not prevent gold sensitization in a sulfur sensitized emulsion. This may suggest …

Fluted And Faceted Porcelain, Barbara Greever

Theses

None provided.

Photographs And Monoprints, Richard Gray

Theses

None provided.

Dancing On A Wall, Jane Alden Stevens

Theses

Not Included

The Manifestation Of Personal Philosophies Concerning Material And Form, Mark Methner

Theses

None provided.

Correlation Of Silver Halide Emulsion Bar-Coater Vacuum Chamber Pressure Fluctuations With Flow Pattern Occurrence, Paul Fitzpatrick

Theses

A study was conducted in which the cause of flow pattern, a repetitive mottle-like defect, was investigated. Results obtained indicate that vacuum pressure fluctuations occur at the start of coating by the vacuum flow port that are 367% greater than at the center of coating. These fluctuations decay in time during the period of flow pattern occurrence, and range in frequency from 0 to .10 mm-1. These pressure fluctuations correlate to flow pattern density fluctuation frequencies of the same range. Additionally, it was seen that the decay rate of the ME side of the vacuum chamber was three times the …

A Comparison Of The Perception Of Juxtaposed Tones In Newspaper Images When Screened With Conventional And Random Dot Screens, Sylvia Monteiro

Theses

The halftone process has been the conventional means of reproducing photographic artwork on newsprint. The use of relatively coarse screen rulings, dictated by the paper characteristics, produces an image with a noticeable dot pattern. Furthermore, the printing process is susceptible to extreme dot gain variation, which affects tone reproduction and the pictorial communication of the image. There were good reasons to suspect that a random dot screen could give more consistent tone rendition than a conventional halftone screen. A comparative study of the consistency of perception of conventional and randomly screened images when printed on newsprint has not yet been …

A Social Studies Course Of Study For The Sixth, Seventh, And Eighth Graders, Laura F. Scales

Theses

Laura F. Scales' 1982 culminating project, A Social Studies Course of Study for the Sixth, Seventh, and Eighth Graders, presents a middle school curriculum designed to foster multicultural awareness and civic competence. Recognizing the need for educational programs that prepare students for life in a pluralistic society, Scales emphasizes the integration of ethnic studies across disciplines. The curriculum includes ten thematic units focusing on family structures, cultural contributions, migration patterns, values across generations, and ethnic identity. Lessons are built around active learning strategies, including interviews, research projects, creative arts, and a culminating multiethnic festival. Scales advocates for developing positive …

The Stability Of Reciprocity Law Failure In Color Print Papers, Victoria L. Carriero

Theses

A study of reciprocity law failure in Kodak Ektacolor 74 and 78 color print papers was carried out by a series of equal engery exposures. Using a color separating filter pack to differentiate the response of RLF of the individual emulsion layers an acceptable color print is attainable by using these curves to determine exposure and filtration changes.

A Software Translator For Color Projection Printing, Richard J. Quattrini

Theses

A software translator that converts relative video analyzer reading to actual filtration and exposure values for color projection printing is developed and discussed. The translation involves a least squares matrix conversion which is derived from several prints with known filter packs and exposures.

A Survey Comparing The Characteristics And Objectives Of Optometric Visual Therapy And Orthoptics And Opthalmoloigcal Visual Therapy And Orthoptics, Wanda Bueneman

Theses

This survey was designed to study the characteristics and objectives of optometric visual therapy and orthoptics, ophthalmological visual therapy and orthoptics, and from the resulting information study the two disciplines comparatively. One hundred questionnaires were sent to a random sample of optometrists and one hundred identical questionnaires sent to a random sample of ophthalmologists . The questionnaire was designed to elicit information concerning the number of referrals for visual therapy or orthoptics made by each professional group, the types of disorders and visual disturbances recognized as legitimate objectives of visual therapy or orthoptics by each group, and the types or …

Trends Toward World Citizenship In The Contemporary World, Mickey Weltman

Theses

This paper, "Trends Toward World Citizenship in the Contemporary World," by Mickey Weltman, explores the evolving concept of world citizenship, defined as both a mindset recognizing global interdependence and a practical framework for international cooperation. The study is grounded in the context of increasing global interconnectedness due to advances in technology, communication, economics, and transnational challenges such as environmental degradation and nuclear threats.

Weltman examines three key trends contributing to the development of global citizenship: religious and idealistic traditions promoting the brotherhood of humanity, the role of international organizations such as the United Nations, and the influence of multinational corporations …

A Sense Of Rasta, Omobowale Ayorinde

Theses

None provided.

A Family Document, Ronald Richardson

Theses

None provided.