Digital Commons Network^™

Edge Sharpness Effects On Computer-Generated Holograms, Clinton S. Potter

Theses

Computer-generated holograms refer to a class of holograms which are produced as a graphical output from a computer. This paper investigates the relation. ship between the resolution in the system used to re duce the graphical artwork to a reasonable size for diffracting light and the quality of the reconstructed hologram. A number of reduction schemes are examined including a one-step reduction onto a general purpose film, a one-step reduction onto a high resolution film and a two-step reduction scheme using coherent illumination during the second reduction.

The Evaluation Of Positive Photoresist Speed, Donis Flagello

Theses

The feasibility of photographic speed values for positive photoresist is evaluated. Speed is defined as the reciprocal of exposure necessary to produce a desired response. An outline of the microlithographic process, the chemistry of positive resist, and previous exposure models precede the experimental body of work to facilitate understanding of the photoresist system. The experimental method proposes a mathematical model describing the resist response to exposure. Photographic speed values result from this model. They are tested for sensitivity to process changes using Analysis of Variance. One speed definition is chosen as a possible standard and process control. It is based …

Scene Illuminate Effect On Additive Two-Color Reproduction, John C. Manfredo

Theses

Whether a two-color reproduction from a red and green additive process is acceptable depends largely on the nature of the scene and its illumination. Additive two-color reproduction will be explored here using different scene illuminants and also different red and green filter combinations. Two projection methods are also examined. Red and green separations were produced by photographing a scene through 16 different filter combinations and 3 different scene illuminants. These separations are then projected two different ways. One method involves projecting the separations back through the red and green filters they were taken through, while in the other method the …

Correlation Between Maximum Density And Log Exposure Range Of Quality Prints, David Baer

Theses

An investigation was made to determine the correlation between the maximum density and log exposure range of photographic paper when making "quality" prints. The 1966 ANSI log exposure range formula assumes that papers which have the same log exposure range but differ in maximum density will print the same negative successfully. It has been shown with 27 Judges that when the 1966 ANSI log expo sure range formula is used the maximum density has an effect on the effective log exposure range such that papers which have the same log exposure range but differ in maximum density will not print …

Simultaneous High Performance Liquid Chromatographic Determination Of Procainamide, N-Acetylprocainamide, Disopyramide, Mono-N-Dealkyldisopyramide, Quinidine, And Propranolol In Serum, James F. Wesley

Theses

We describe a method for the simultaneous high performance liquid chromatographic determination of several antiarrhythmic drugs and some of their metabolites after extraction from 2.5 ml of spiked pooled sera. The extracts were applied to a C8 reversed phase column. Nine compounds of interest were resolved within the 30 minute run. An initial mobile phase of 80% phosphate (25 mmol/L, pH 3.5), 20 % organic (acetonitrile: methanol, 2:3) was maintained for 2 min at which time a linear gradient was used to change the mobile phase to 30% phosphate, 70% organic at 20 min after injection. This composition was maintained …

The Graphic Design Career Kit, Sharon M. Heyenck

Theses

Not Included

Culminating Project, Judy A. Crockett

Theses

No abstract provided.

Bibliotherapy To Help Young Children Cope With Their Problems, Marjorie J. Semon

Theses

Since children are facing many stresses both from within and without, it is felt that bibliotherapy may be a way of helping them face and cope with their problems. After a search to see if a curriculum guide had been developed to help kindergarten children through bibliotherapy, none was discovered. An extensive review of existing literature was then made to learn about children and stress at the pre-operational level, as well as an in-depth study of bibliotherapy from its history, research on bibliotherapy pertaining to young children, the qualifications of the bibliotherapist, how one determines whether the need exists, and …

The Ongoing Art Therapy Interview Process In A Psychiatric Milieu, Vivian A. Ware

Theses

This paper presents the development and application of the Ongoing Art Therapy Interview (OATI), a structured approach designed to assess and support patients in a psychiatric day hospital setting. The OATI combines the therapeutic and diagnostic dimensions of art therapy by integrating artwork with guided interpersonal dialogue. It is informed by Harry Stack Sullivan’s interpersonal theory of psychiatry, particularly his diagnostic framework for understanding patient experience, communication, and relational patterns.

The study outlines the theoretical foundations of the OATI, its practical procedures, and its role as both a therapeutic intervention and an evaluative tool. In this model, patients produce visual …

Stamping And Embossing: A Modern Adaptation Of Pre-Columbian Metalworking Processes, Richard Coble

Theses

Not Included

Image Restoration By Selective Short Space Spectral Subtraction, Rose M. Korte

Theses

Image restoration by short space spectral subtraction has been applied recursively to a photographic system in an attempt to increase the signal to noise ratio proportionally to the amount of optical density present. The image is smoothed in the frequency domain a small space at a time based on the power spectrum at a given density level. The method is a variable filter that is a function of photographic density.

Research Into Lead Glass, S. Leon Applebaum

Theses

None provided.

Predicting Color Print Filtration And Exposure, James A. Klingshirn

Theses

A method of mathematically modeling the response of a system in which color reflection prints are made from a negative was investigated. Data was generated by making a series of prints with different yellow and magenta filtrations at a series of exposures. First, second and third order regression curves were fit to the filtration versus reflection density curves and the exposure versus density curves that were thus generated. The predictions of the sets of equations were compared to the data and it was found that the filtration could be predicted more accurately than the exposure time, because, the response curves …

Direct Transfer Positive Preparation By The Use Of The Hell Chromagraph Dc-300 Color Scanner, Steven Berg

Theses

Direct transfer cylinders are usually imaged from positives created off of the camera back. In this thesis a method was proposed to create positives from a dot-generating laser scanner that would fit the requirements of direct transfer cylinders. A test gray scale was scanned and a positive produced which contained square dots as opposed to round dots. This positive was used to etch a cylinder and then the cylinder was run on the Champlaln rotogravure press, located in the school of printing. From the printed results of the first test positive a tone reproduction study was performed to determine how …

The Development Of Art In The Elementary Child K-6 With Emphasis On The Four Major Concepts Of Art: Line, Mary Christine Melby

Theses

This paper identifies the developmental stages in children' s art and demonstrates the necessity of having a developmental art program in the kindergarten through sixth grades. The art program should be one that provides for the students ' needs to express themselves creatively and appropriately at each age . The act of creative involvement will allow children to refine their motor and perceptual skills, help them to express their emotions freely, and enable them to cope with their individual growth patterns.

The subjects used in this study were five to twelve year old children, ranging from kindergarten through the sixth …

Art Therapy With The Mentally Retarded: Exploring Developmental Art Patterns Of Copying Tendencies And The Need Of Symbolism, Noranna Jean Wingender

Theses

This thesis investigates the art therapy practices used with moderately and mildly mentally retarded adults, focusing specifically on developmental art patterns, the urge to copy, and the presence or need for symbolic meaning in artistic expression. Conducted within a private residential facility, the research employs a qualitative approach rooted in developmental psychology and art therapy theory. The work examines how adult residents respond to structured and unstructured art exercises that mirror the developmental stages observed in children, particularly those outlined by Lowenfeld and Brittain.

The study identifies key behaviors and tendencies—such as the inclination to imitate forms, repeated use of …

The Effect Of Camera Motion On Mtf And Sqf For Handheld Camera At Two Weights, John Griffith

Theses

Two hundred seven measurements of camera motion, made while operators took photographs, were used to calculate the average Modulation Transfer Function (MTF) and Subjective Quality Factor (SQF) due to the motion. Eight experiments were performed with a 35mm camera at weights of 300 and 600 grams. The camera displacement path was sampled at intervals ranging from 0.5 milliseconds to 15.6 milliseconds. The MTF and SQF were calculated, at several shutter times, from the measured displacement paths using the model of a perfectly efficient shutter. SQF was a linear function of shutter time. The MTF due to camera motion and shutter …

Edward Steichen And World War Ii Naval Photography, Christopher Phillips

Theses

None provided.

Ceramic Art: A Vehicle For Cultural Awareness, Michael Olusola Olugbile

Theses

Not Included

High Temperature Oxidation Of Sterling Silver, Jon A. Hall

Theses

Not Included

Creating A Library Media Center At A Metro High School, Barbara P. Reading

Theses

The document is a culminating project by Barbara P. Reading, detailing her efforts to create a library media center (LMC) at Metro High School in St. Louis, Missouri, during the 1980-1981 academic year. The school, an alternative institution for college-bound students, previously lacked such a resource. The project focused on designing a program aligned with the school’s unique educational goals and integrating multimedia materials to support both teachers and students.

Barbara initiated the LMC by ordering furniture, books, and audio-visual equipment, carefully selected based on input from staff and students. She emphasized the importance of having diverse, multi-ethnic resources to …

An Investigation Of A Mathematical Model To Characterize The Nonlinear Nature Of A Lithographic Film System, David S. Holbrook

Theses

An attempt was made to obtain a set of spatial transfer functions which would allow the prediction of output effective exposure distributions for a nonlinear lithographic film system. Slit exposures were used as one-dimensional system inputs. It was proposed that the use of slits would allow the calculation of a general system transfer function to be simplified. The mathematical model chosen to describe this nonlinear transfer was shown to be invalid due to the nonlinear relationship of small area system gain (small area output effective exposure divided by the input exposure) as a function on input exposure. The model,, based …

Deposition Of Suspensions In A Vertical Converging Tube, Kam-Ho Chan

Theses

The deposition of suspensions in a vertical converging tube with significant gravity effects Was investigated theoretically with control volume - finite difference approach. The fluid was assumed to be incompressible and laminar. The particle density was assumed to be uniform at the inlet of the. tube. The velocity profiles for the fluid considered were (a) Uniform profile, (b) Parabolic profile. The angles of convergence studied were 0°, 5° and 7°. Effects of velocity ratio δ^*(=terminal velocity/mean flow velocity) on the rate of deposition were investigated for δ^*=0,1,10.

It was found that deposition increases with increasing angle …

The Study Of Factors That Affect Cell Depth During Etching In Direct Transfer Gravure, Somchai Sringkarrinkul

Theses

This thesis is to study the four main factors which affect cell depth in copper cylinder etching in direct transfer gravure, and using ferric chloride as an etchant. The multivariate regression method was used to analyze the sample responses (cell depth) of nine different treatments of an etched-screened-tone scale . The regression equations for predicting cell depths from the four variable factors were calculated and the optimum condition which would give the best tonal gradation was predicted. Also the factors which cause uneven cell depth were detected.

The Comparison Of Densitometric Measurement With Gravimetric Measurement Of Wet-On-Wet Ink Trapping, Kongsak Lawphongpanich

Theses

Densitometric and gravimetric methods are employed to measure the percent of ink trapped in a wet-on-wet transfer. This study seeks to discover the relationship of the two methods and if there is a significant difference between the percent gravimetric and percent apparent trapping. An IGT Printability tester (Model-A2) with two printing discs is used to apply ink onto paper. When using the gravimetric method the amount of ink on the disc and ink transferred onto paper are weighed with an analytical balance. The author then calculates the percent ink trapping. When using the densitometric methods densities are measured by polarizing …

Background And Philosophical Statement On The Problems And Issues Related To The Oppression Of Women And Political Process Of The Equal Rights Amendment, Linda Ortmeyer Kanagawa

Theses

Unavailable.

Systems Approach To St. Louis State Hospital's Referral Program, Reza Vahidi

Theses

This thesis presents a systems approach to analyzing and redesigning referral and billing processes at St. Louis State Hospital in Missouri. Recognizing the growing complexity of hospital operations, the study applies systems theory to evaluate inefficiencies in the hospital’s referral program, particularly in its interactions with external agencies and community physicians. The hospital historically relied on manual procedures and fragmented communication methods that contributed to delays, inaccuracies, and underutilization of available resources.

The study examines the referral workflow from intake to admission, identifying systemic bottlenecks and proposing structured changes to improve coordination. Emphasis is placed on streamlining communication between hospital …

Capital Investment Program, William L. Diggs

Theses

Unavailable.

Art Therapy In The Treatment Of Emotionally Distrubed Children With Learning Problems, William L. Franklin

Theses

In my work, in a residential treatment center for emotionally disturbed children, I have observed that many, if not a majority, of the residents experience difficulty in learning . Emotionally disturbed children exhibit inappropriate emotional reactions which hinder their ability to make appropriate responses to their environment. Uhlin (1979), described their predicament as being unable to structure and maintain their experiences of reality. As a result, such children function in a distorted manner (Uhlin, 1979). Emotional disturbances can range from children who seemingly become detached from reality; for example, the autistic children to the less observable or detectable disturbances related …

The Value Of Art Therapy With Institutionalized Children, Morna Freund

Theses

Unavailable.