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. …

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 …

The Decorative Imperative, Harriet Jaffie

Theses

None provided.

Prediction Of Cut-Off Frequency From The Maximum Slope Of A Transmittance Scan Of An Ideal Edge, Dale E. Ewbank

Theses

This study has empirically shown that the maximum slope of an ideal edge scan in transmittance versus position is an excellent indicator of the cut-off frequency at which a microdensitometer system's modulation transfer function goes to zero. It was found that numerical aperture of collection objective, scanning slit width and alignment, system focus, and sampling interval are parameters which must be carefully chosen and set-up when implementing or using this slope technique to check system performance.

Thesis, George Ring

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.

The Effect Of Ink/Fountain Solution Emulsion Of Paper Permanence, Thomas H. Spotts

Theses

The permanence of printed documents and books appears to be primarily dependent on paper stability. Other researchers implicate pH as a major factor in the deterioration rate of paper and acidity as major the cause of this deterioration. During the lithographic printing process, ink is in direct contact with fountain solution, which can be acidic or alkaline. Fountain solution is a mixture of water and chemicals used to keep the non-image areas of a lithographic plate moist. On press the intimate contact of ink with fountain solution creates a fountain solution-in-ink emulsion. The emulsion used here is a stable suspension …

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 …

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 Influence Of Merleau-Ponty, James Davis

Theses

Not Included

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.

3 Films, David Carnochan

Theses

None provided.

Theories Of Management: A Manual For Managers, Terrie Hearns Schwerdtfeger

Theses

Terrie Hearns Schwerdtfeger’s thesis, Theories of Management: A Manual for Managers, serves as a practical guide aimed primarily at preparing individuals for roles in middle management, especially within healthcare institutions. The manual is structured around three central areas: managing oneself, managing subordinates, and managing the organization. Schwerdtfeger argues that successful management depends on mastering all three, as they are interrelated and in constant flux due to evolving business and societal demands. Drawing from both classical and contemporary theories, including those of Taylor, Herzberg, Vroom, and Maslow, the work addresses core concepts such as motivation, job enrichment, decision-making, organizational communication, …

Image Quality As A Function Of Unsharp Masking Band Center, Chia-Chin Liu

Theses

Unsharp masking is an image enhancement technique used to obtain a Modulation Transfer Function (MTF) greater than unity within a given spatial frequency band. In unsharp masking, the mask forms a slightly blurred version of the original image. The result is more severe in the high frequency region than at low frequencies. The final image is made by combining the original positive and the blurred negative images. The subjective quality of images resulting from unsharp masking is a function of the frequency response of the human eye. This study evaluates the unsharp masking technique by implementing the Subjective Quality Factor …

Advantages And Practical Limitations Of Mathematical Continuity In Cam Profile Design, Edward Gunzelmann

Theses

The basics of cam profile design are discussed with emphasis on mathematical profile types i.e., polynomial versus trigonometric. Comparisons are made and recommendations on the applicability of the various profiles with respect to their dynamic performance are extracted from existing texts. A literature search was done into specific cam system dynamic performance. The categories researched were: a) shock spectrum analysis with return profiles as a forcing function, b) cam shaft wind up, c) follower stiffness effects, d) crossover shock and "jump" phenomena, e) drive errors to the cam, f) manufacturing tolerance effects, g) curve types, h) return spring surge, and …

Derivation Of The Optimum Film Contrast Gradient In Photographic Tone-Reproduction Systems, William R. Dowling

Theses

The optimum tone-reproduction characteristics were determined for a high contrast, a low contrast and a controlled contrast scene, by subjective analysis of the resulting prints. From this, mathematical models of the optimum film characteristic curves and fractional gradients were derived. Optimal system gamma (filmT x paper 7 ) was determined to be between 1.2 and 1.4, however, the gradient contrast was determined for the film so that contrast is defined over the entire toe and straight line regions. Luther's equation and its derivitive were used as the models in this study, and it was found that these can be used …

Prediction Of Small-Scale Densities Using The Chemical And Optical Spread Functions, David S. Cline

Theses

Development adjacency effects and optical spread in photographic systems cause difficulties in predicting small-scale densities. These effects can be quantified as spread functions. The optical spread func tion describes the light scatter of the film. The chemical spread func tion describes the lateral diffusion of development- inhibiting and dev elopment-accelerating reaction products. These spread functions can be used along with the sensitometry and covering power relationships of the system to predict small-area densities from the object exposure profile. A study based on C. N. Nelson's work was undertaken to develop a math ematical model that uses the optical and chemical …

Correlation Of Development Acceleration By Decyltrimethylammonium Bromide With The Ionization States Of Hydroquinone And Of Chlorohydroquinone, Robert W. Eskes

Theses

The hypothesis is that the effect of acceleration by a quaternary salt is greater on the development rate of the divalent ion than on the rate of development of the monovalent ion of hydroquinone. The gross rate of development of a hydroquinone-sulfite developer was determined with and without a quaternary salt for a range of pH values. Comparison of the acceleration of catechol which is active as a monovalent ion with the acceleration of hydroquinone which is active mainly as a divalent ion was hoped to allow the separation of the hydroquinone gross rate into the contributions by the monovalent …

Mathematical Modeling Of Black-And-White Chromogenic Image Stability, Charles Datema

Theses

Agfapan Vario-XL film was faded at various levels of temperature, humidity, light, and fade time to determine the mathematical relationships of these variables and to examine whether interaction occurs between each factor. Light stability of the film was measured, and the Arrhenius relationship was used to predict dark stability at ambient storage conditions. It was found that the amount of fade, as measured as either a change in transmittance or density, could be mathematically modeled with a high degree of correlation. Each independent variable (temperature, humidity, and time) was interactive with the other two variables. Under the specific conditions tested, …

A Ruin Aesthetic, John Hutchins Ruppert

Theses

Not listed.

A Classroom Management Model And Activities For Developing Self-Responsibility In The Elementary School, Sharon Montalbano Tebbe

Theses

One major goal of education is to nurture students who can take responsibility for their continued growth. In meeting this goal, educators must develop responsible problem solvers for society. This project establishes a classroom management model and activities for elementary teachers to use in setting up programs in their classrooms for developing self-responsibility in their students.

Classroom management models, teacher effectiveness, and student characteristics were researched in developing the model and activities presented in Chapter III and IV. In order for teachers to develop responsible problem solvers, the research indicated certain teacher behaviors were needed. Also, the research demonstrated that …

Digital Image Modeling Of Film Granularity And Effect On Subjective Pictorial Quality, Jerold B. Lisson

Theses

The basic question posed by this study is - WHAT IS THE SENSITIVITY OF PICTORIAL SUBJECTIVE QUALITY TO A GRANULARITY INCREASE? This question is decidedly different than the typically posed question of granularity studies, that is - WHAT IS THE SENSITIVITY OF PERCEIVED GRANULARITY (graininess) TO A GRANULARITY INCREASE? In the subjective evaluations herein, the former question was considered most pertinent to response from the general public, who in toto, do not interpret graininess as an attribute per se, but only that ubiquitous factor known as "quality" - poor, indifferent, or good. All references in this paper to granularity/quality thresholds …

Image Enhancement In A Microfilm Projection Printer Utilizing Partial Coherence And Spatial Filtering, Donald Pophal

Theses

An optical system was assembled for a study of spatial filtering and partial coherence. It was used to produce enlargements of microfilm images at a magnification of 12-X. Enhancement of fine-detail contrast was obtained by means of a spatial filter that transmitted most of the light diffracted by the microfilm negative and absorbed about 60$ of the undiffracted light. The filter increased the modulation transfer function (MTF) of the enlarging system by a factor of about 1.5 measured at spatial frequencies lying in the region where the eye is most sensitive. At higher frequencies, the enhancement became greater than was …

The Use Of Contour Plots To Optimize Exposure And Development Time In The Preparation Of Color Correction Masks With A Three-Aim-Point Control System, Ronald Irwin

Theses

The calculation of optimum development and exposure for color separation mask has long been a problem for the color separator. Today this problem is somewhat minimized through the use of mini-computers which utilize mathemati cal models in their programming. This thesis examines an alternative method of solving for optimum development speed and exposure conditions. The alternative tested was the use of contour plotting to predict a development and exposure time which would yield a predetermined mask number and A-B range. The process which the tests were conducted against was silver masking using three-aim-point control in contact conditions. This thesis describes …

Spiritual And Philosophical Concerns, Frances Welles

Theses

None provided.

A Production And Production Book Of The Adventures Of Tom Sawyer, Susan Diane Farwell

Theses

Unavailable.

Some Observations On The Development Of Use Of Computer Informational Systems In Hospital Settings And Recommendations For Proposed Implementation At St. Joseph's Hospital, Andrew Z. Richardson

Theses

An intent is stated to discuss the developmental history and social impact of computer information retrieval systems on the hospital setting with primary area of focus being the Pharmacy Department. The interrelationship among various areas in the hospital setting are considered for need and cost/benefit associated with the use of a computerized information retrieval system.

A Case Study of St. Joseph Hospital is presented in example of evaluative consideration for implementation of a computerized information retrieval system.

Different forms of the "state-of-the-art" in informational systems are considered for their effective impact on cost/ benefit ratios to patient care and hospital …

An Investigation Of The Library Education Of Teachers In The Lutheran Elementary Schools In The Saint Louis Area, Joanne Bader

Theses

This study was designed to investigate the library education of teachers in the Lutheran elementary schools in the Saint Louis area. It vas hypothesized that teachers were not prepared to use the library as it should be used, partly because they had not been taught to do so, and that their feelings of how adequately trained they were would depend on when and where they had received their education. Elementary teachers, a total of 244 teachers, in twenty-nine schools were surveyed. Results indicated that generally the teachers are not well trained in formal courses in library education, but obtained most …

Quantification Of The Unsharp Masking Technique Of Image Enhancement, Larry A. Scarff

Theses

The technique of unsharp masking is described and its use as an image enhancement technique discussed. A mathematical model for the masking process is developed; experimental testing and MTF measurements of the masked and sharpened images are made to test the validity of the mathematical model as a predictor of the mask and final image characteristics. The effect of contrast, mask unsharpness, and source spread function size on the resulting MTF are presented. Subjective evaluations are used to determine the visually optimum image. It is shown that the visually "best" image is not necessarily the one with the largest MTF …