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Eight Hundred Pounds Of Sand, Two Ping Pong Tables And..., Malcolm Spaull

Theses

None provided.

Modulation Transfer Function Of Image Motion Due To Operator Vibration, Venkatraman Nagaswami

Theses

The displacement path of a hand-held photographic camera is studied at low shutter speeds when operated by different observers. Using the Fourier method, the average power spectrum of hand vibration is obtained. The Modulation Transfer Function of image motion for an average observer at various exposure times is theoretically predicted.

The Role Of Reliability In The Publisher/Supplier Relationship In Textbook Production, Steven Brenner

Theses

Most publishers in the textbook publishing industry experience production delays. If the delays are serious it could result in a postponed publication date. The ramifications of a postponed publication date range from anxiety to the author and publisher to lost revenues. Most textbook publishers are required to have their new texts reviewed by adoption committies, therefore it is imperative that their books be ready by a certain date. There are many functions involved in the book making process. A delay in any one area may hold things up in other areas, thus compounding the situation. The purpose of this thesis …

Harvey: A Case History, April Mccleary

Theses

Unavailable

An Individualized Program For The Learning Resource Center, Marian Woyna

Theses

This project outlines the development and implementation of an individualized program for the Learning Resource Center (LRC) at Roach School. Initiated in response to organizational shifts—including the adoption of the Individually Guided Education (I.G.E.) model, restructuring due to desegregation, and expanded special education services—the program addresses the growing need for differentiated learning opportunities beyond the traditional classroom setting.

Marian Woyna’s work emphasizes a shift from a passive LRC role to an active, instructional one, supporting students across a range of academic abilities and personal interests. Drawing on the theories of confluent education and the Prester Theory of brain function, the …

Found Television Images, Janice Hope Meyers

Theses

None provided.

In-Service Teacher Education, Marilyn G. Dreyer

Theses

The purpose of this study was to perceive the needs of the faculty of the Warren County R-III School District in the area of in-service teacher education.

The instrument used in the study was a survey designed by the author and arranged to secure data that would give demographic information as well as obtain information for a needs assessment. The survey was distributed to the teachers through the school mailboxes .

After the information was collected, it was tallied, charted, and analyzed . In summarizing the study, it can be concluded that: 1) all teachers realize the need for in- …

Accounting And Reporting For Nonprofit Organizations As Elements Of A Financial Management System, Arthur G. Hawkins

Theses

Unavailable.

A Study Of The Effect Of Coating Variations On Tone Reproduction In The Association Products Plate, Mark Woodhouse

Theses

The halftone process is so much a part of printing today that it is often hard for printers to conceive of the notion of reproducing an image without a screen. Before the idea of breaking up an image into small dots came along however, printing was being done with lithographic methods which produced excellent results and the main concern of the theorist and technician was how to produce a more consistent, higher-quality, continuous tone image. Perhaps it is unfortunate that the advent of the halftone process distracted thought from this area to such a large degree, since it wasn't until …

A Low Frequency Sine Wave Camera, Russell Palum

Theses

An optical system using spherical and cylindrical optics can convert area-modulated spatial sinusoidal targets to intensity-modulated spatial sinusoidal images. A specific system was analyzed with a spot diagram. System response to 30 cycles-mm~l is predicted. The system mechanical tolerances were determined on the basis of modulation transfer function (MTF) calculations. A mechanical structure which would maintain these tolerances was designed and built.

The Modification Of Simple Images By Fourier Transform Manipulation, Noel Chavez

Theses

Knowledge of how an image is changed by a given modification of its Fourier transform is important when attempting to find solutions to problems in image processing. Several types of filters were used to modify the Fourier transforms of an edge and a bartarget. The images were reconstructed from the modified transforms to determine the change produced by a given modification. Various regions of the Fourier transform determine specific characteristics of the image. The amplitude of the low frequencies controls the form and average level of the image, while the amplitude of the high frequencies effects sharp transitions and noise.

Design And Evaluation Of A Stepped Diaphragm Intensity Scale Graphic Arts Sensitometer, Patrick Meehan

Theses

An Intensity Scale Sensitometer for testing the photographic response of Graphic Arts materials was built and evaluated. The sensitometer utilizes a stepped area diaphragm and a cylindrical lens to produce a stepped illuminance distribution at the film plane. Both tungsten and pulsed xenon lamps are provided. A computer aided study was used to find the optimum lamp position with respect to the reflector. A scanning aperture type shutter located at the stepped diaphragm and a knife edge aperture located at the lens are used to control exposure duration and intensity. The main advantage of this sensitometer is the production of …

Determination Of The Chemical Spread Function Of Kodak High Contrast Copy 5069 Emulsion, J.N.A. Laitre

Theses

A new procedure for obtaining the Chemical Spread Function of an emulsion-developer combination is discussed. This procedure consists of directly measuring the Optical Modulation Transfer Function (MTFO) by scanning the sinusoidal object irradiance distribution through the non-developed emulsion using a microdensitometer. The Modulation Transfer Function (MTF) of the processed emulsion is determined in the conventional manner. Then the Chemical Modulation Transfer Function (MTFC) is determined from the linear relationship: MTF = MTFC X MTFO. Once the MTFO is determined then the Spread Function is calculated using the Fourier Transform operator. Photographic systems are in general non-linear. However it is well …

Design Considerations In Linear Microdensitometry, Thomas Lianza

Theses

The conditions for linearity in microdensitometry are discussed. It is shown that under proper conditions a microdensitometer may behave linearly regardless of the coherence properties of the source. A linear microdensitometer was constructed and design considerations are presented as well as test results.

Crown Ether Complexes Of Lanthanide Elements And Their Applications As Lanthanide Shift Reagents, Dale Decann

Theses

A complex of the lanthanide salt, praseodymium nitrate, and the crown ether, 15-crown-5 has been isolated. The characterization of this complex by elemental analysis, melting point, H and C NMR, UV-visible and IR has indicated that the isolable solid compound is a 1:1 stoichiometric complex of the two reactants and is unsolvated. The application of this complex as a lanthanide shift reagent does not appear to be very feasible due to its insolubility in the non-polar solvents typically used in NMR experiments. Studies of the shifting ability of this complex as well as an inves tigation of the shifting ability …

The Effects Of Sulfur Sensitization And Stabilization By 4-Hydroxy-6-Methyl-1,3,3a,7-Tetraazaindene On Hydrogen Sensitization Of A Photographic Emulsion, David Lyon

Theses

Hypersensitization using H2 gas is the most recent addition to the techniques available to reduce the effects of low intensity reciprocity law failure. Because of the presence of addenda in all commercially available emulsions, the interactive effects of hydrogen sensitization with a common stabilizer (4-methyl-6-hydroxy-1,3,3a,7-tetraazaindene) and a common form of chemical sensitization (Sulfur Sensitization) alone and together were investigated. A primitive, single jet emulsion was coated with and without the above addenda. Samples were paired and either treated to a hydrogen baking process at 65°C for 20 minutes, or left untreated. Sensitometric exposures were made in a room air environment …

Image Quality Dependence On Partial Coherence In A Projection Printer, Bruce Radl

Theses

A study has been made of the printed images from a projection printer whose light source can be varied to provide illumination of various levels of partial coherence. The coherence interval for five light source configurations was measured with a shearing interferometer at the object plane of the printer. Many test images were made with the printer for each of the five degrees of partial coherence and results showing image quality as a function of coherence interval have been reported. It was found that with an 11µm coherence interval the image forming characteristics were typical of an incoherent instrument and …

A New Mathematical Model For Nephron Macromolecular Selectivity, John Anthony Domiter

Theses

A mathematical model describing the displayed selectivity of the kidney nephron to macromolecules of varying particle size is presented. Diffusion and electrical forces are considered to be the sole mechanisms of transfer. The mass transfer principles responsible for selectivity are considered to occur within the capillary structure, and not within the membrane wall. A charge is assumed to be characteristic of the macromolecule and the membrane wall. Models describing both charged and uncharged solutes are developed.

A non-linear least squares technique, developed by Marquardt, is used to curve fit the derived functions to data relating fractional clearances of dextran and …

Calculations Of Isobaric Phase Enthalpy Differences For Binary Systems From Vapor-Liquid Equilibrium Data, Steven Merrill Harvey

Theses

Equations relating isobaric vapor-liquid equilibrium data to heats of vaporization are useful in testing the thermodynamic consistency of experimental VLE data and in the design of distillation equipment. Several researchers have proposed such equations based on the Gibbs-Duhem equation. At low pressures, simplified versions of these equations were successfully used to test the consistency of published VLE and enthalpy data. At high pressures, equilibrium phase enthalpy differences were calculated from rigorous equations using a modified form of the Redlich-Kwong equation to calculate fugacity coefficients. As expected, the relative error of using the simplified equations was found to increase with increasing …

A Three-Dimensional Kinematic Model Of The Human Knee, Wayne Ke-Wung Li

Theses

This thesis describes two kinematic models of human knee which may be used to study the motion of the knee and the forces in the ligaments of the knee. In one model, the ligaments are simulated by rigid links connected to links representing the articulating bones at the centroids of the areas of insertion of the ligaments. The condylar higher pair connections are simulated by equivalent linkages connected by resolutes. In an advanced model, the rigid ligament links are replaced by springs.

The IMP procedure, a powerful kinematic linkage analysis method, is employed to study the motion and forces in …

Axisymmetric Air Jet Impinging On A Convex Hemispherical Plate, David C. Chan

Theses

Experimental investigation was conducted on an axisymmetric, submerged air jet impinging normally on a smooth convex hemisphere. Three nozzle diameters of 0.5" (12.7mm), 0.375" (9.525mm) and 0.25" (6.35mm) were used and tests were run at Reynolds number range of 14,700 to 84,000.

The results obtained in the free jet and deflection zones were found to confirm the works of previous investigators. As for the fully developed wall jet region, the following points are noted:

1. The maximum wall-velocity decay was found to possess a slightly higher rate than that of either the flat plate or the concave hemisphere.

2. The mean velocity …

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An Equilibrium Theory Of The Ph-Parametric Pump, Charles Omotayo Kerobo

Theses

Parametric pumping, both batch and continuous, and cycling zone adsorption are theoretically scrutinized for various operating conditions by using the concept of equilibrium stages. The model system is Haemoglobin-Albumin-CM sepharose, a physical system in which a local equilibrium between liquid and sorbent in the layers of the separating medium in the column is characterized. For the batch process, the steady-state concentrations in both top and bottom reservoirs are found to be independent of the number of equilibrium stages, provided that a = 1 (i.e., number of transfer steps/number of stages).. For continuous parapump process, separation is enhanced with decreasing top …

The Effects Of Polyethylene Oxide On Dmaac's "B" Type Developer, Harold Mccullough

Theses

This report describes the results of a study comparing ASA speed, contrast index, and resolution from a developer time series. The time series was made on six levels each of PEO-400, -600, -1000, and -1500 added to DMAAC's "B" developer. Kodak's SO-277, low contrast, and SO-243, high contrast, aerial duplicating films were used. Results show that PEO-400, at a concentration of 30ml/l, can be a material help in getting higher speeds and contrast index from SO-277 aerial duplicating film without loss of resolution.

Minimization Of Unwanted X-Ray Exposures On Conventional Photographic Films By Developer Modification, Michael L. Rudolph

Theses

Experiments were done to reduce the influence of unwanted X-ray exposures on Kodak Plus-X film. Variations of surface developer components showed no favorable results. The concentration of KBr was varied up to 10 grams per liter with again, no favorable results. The incorperation of benzitriazole decreased base plus fog from values of .81 to .56 with a significant decrease in speed. Phenyl mercaptotetrazole was extreamly effective in decreasing both base plus fog and speed.

Noise Reduction By Multiple Image Printing, William Mcdonnell

Theses

A method of noise reduction by the successive partial printings of identical negatives was investigated. Image enhancement in terms of granularity reduction and resolution increase was obtained.

An Investigation Of The Emotional Connotations Of Printing Types, Michael Blum

Theses

This thesis addresses itself to the problem of understanding the emotional connotations of printing types. It is hypothesized that there is a model useful in predicting reactions to a given type style based on atmosphere value and usage. The majority of the literature on this subject is nonempirical. It is characterized by the author's stating their opinions with little or no attempt to validate them. The empirical literature shows that there is an emotional connotation associated with particular type faces. These studies have not shown, however, the importance of this connotation in terms of appropriate choice of type faces . …

Testing Communicative Competence: A New Approach Based On Discourse Analysis, Margaret B. Silver

Theses

This thesis proposes a new method for assessing communicative competence among ESL learners by using discourse analysis as the foundation for a placement test. Margaret B. Silver critiques conventional evaluation tools—such as the Ilyin Oral Interview, the STEL grammar test, and cloze procedures—arguing that they fail to measure the full range of linguistic and sociolinguistic abilities necessary for real-world communication. These traditional assessments, while helpful in measuring grammatical knowledge, overlook important features such as pronunciation, intonation, kinesics, and the ability to convey meaning in context.

Silver’s approach draws on discourse analysis to evaluate how students actually use language in unscripted …

Art Therapy With Adolescents: Identity Crisis And Creative Expression, Kathleen Monahan Chaney

Theses

Not available.

An Individualized Approach To The Teaching Of American Literature, Judith A. Rose

Theses

Judith A. Rose’s An Individualized Approach to the Teaching of American Literature (1979) explores the effectiveness of individualized instruction in high school American literature classes. The study compares two instructional methods: a traditional, teacher-directed classroom and an individualized learning environment where students negotiate learning contracts, choose activities, and progress at their own pace. The study focuses on a unit centered around To Kill a Mockingbird and evaluates student outcomes in both cognitive and affective domains.

The research finds that students in the individualized classroom showed higher engagement, greater responsibility for their learning, and a small but notable improvement in test …

Determining The Modulation Transfer Function Of A Lens-Film Combination Using The Diffraction Effects Of A Coherent Imaging System, Mark Washburn

Theses

This study will present a simple, quick, and inexpensive way to producing sinusoidal test targets, which can then be used in measuring the image quality of a photographic system by way of a coherent system. The sinusoidal test targets will be produced from a series of bar targets using Fourier Optics, and a comparison study will be made between measuring MTF with a laser and a microdensitometer. A defocused target series will also be produced to note the change in MTF of the photographic system. The results indicate that sinusoidal test targets can be made quickly and inexpensively, and then …