Digital Commons Network^™

Interimage Effects And The Mtf Of A Color Reversal Film, Joel Panning

Theses

Interimage effects have long been recognized as a factor in the reproduction of color. Reversal materials are no exception and exhibit interimage effects which have previously been revealed through techniques using END analysis. This study presents a method for revealing the presence of interimage effects in a reversal film's Modulation Transfer Function. Utilizing filtering techniques, two dyes of a three color transparency are eliminated from the final image by exposure and development. The remaining single dye image at a specified level is then compared to the corresponding layer and image in a colorimetrically specified neutral. The edge gradient analysis method …

A Preliminary Investigation Into The Effect Of Select Paper Characteristics On Dot Gain In Web Offset Lithography, Timothy Clark

Theses

This thesis describes a screening experiment designed to determine which of seven paper characteristics influence dot gain in web offset lithography. Dot gain is the enlargement of halftone dots during printing from plate to paper with a resultant increase in dot area. The variability of dot gain during a press run and from run to run is detrimental to the quality of black and white and color reproductions. The seven paper characteristics: gloss, smoothness, absorption, physical density, caliper, opacity, and formation are measurable characteristics used to describe the printability of a paper. Using one unit of a four-unit web offset …

Communication And The Written Memorandum, Jean R. Laventhal

Theses

Unavailable.

The Effect Of Simultaneous Intensification On The Detective Quantum Efficiency, B. Desai

Theses

The effect of simultaneous intensification on the detective quantum efficiency of Kodak high definition aerial film type 3414 is investigated. The detective quantum efficiency or DQE varies from .00086 % to .115 % for the unintensified exposure over a log exposure range of 0.9, with the peak at .1223 %. This exposure has a base+fog density of 0.06. Different degrees of simultaneous intensification result in varying values of DQE. The exposure with simultaneous intensification which produced a base+fog of 0.24 gave the maximum sensitometric speed incease by a factor of 1.38 f/stops or 158 %. This exposure varies in DQE …

Determination Of The Relationship Between Information Capacity And Identification By Simulated Aerial Photography, Michael Jones

Theses

The relationship between information capacity and the ability of photointerpreters to identify vehicles in simulated aerial reconnaissance was investigated. An aerial scene lighting simulator was constructed and used in the production of a series of simulated aerial reconnaissance photographs of models of military tanks and trucks. The information capacity of these photos was varied by defocussing the taking camera and the simulated ground scale was varied by changing the taking camera reduction. Duplicate positives of these images were evaluated by trained military photointerpreters who determined the resolving power and attempted to identify the vehicles from a key provided. The resulting …

Mtf For Photographic Films By Parameter Estimation In The Space And Frequency Domains, James H. Clark

Theses

A new method for determining the modulation transfer function (MTF) for photographic films is described. The MTF and corresponding line spread function are approximated by carefully chosen models which are uniquely specified by a few parametric constants. By estimating the parameters in space and frequency simultaneously, the interactions between the two domains result in improved estimates over those provided by either domain alone. A computer algorithm has been written to determine the parameter constants that define the best-fit model for the emulsion MTF.

Semicontinous Ph-Parametric Pump : Experimental Study, Hsien-Chih Lee

Theses

Voidage of SP Sephadex (C-50) ion exchanger at different aqueous buffer concentration and the pH have been estimated from draining the interstitial aqueous. Experimental results of the SP Sephadex (C-50) voidage at pH cycling zone are in quantitative agreement with previous test method, so the voidage estimated from draining the interstital aqueous can be used in pH-parametric pumping. The optional displacement volume in semicontinuous pH-parametric pump of different buffer concentration can be predicted from voidage. A semicontinuous pH-parametric pump for separating proteins has been experimentally investigated using the model system haemoglobin and albumin on a. SP Sephadex (C-50) ion exchanger. …

Possible Efficiency Improvements In Residential, Gas Fired Furnances, Philip Louis Rinaldi

Theses

This project examines the problem of how to improve energy utilization in a residential space heating environment. Techniques for lowering unit energy consumption are developed and the feasibility of their implementation is discussed.

The project development first establishes the magnitude of the energy wastage problem for the individual consumer and its impact on the national scale. It must be emphasized that these represent two, sometimes distinctly different justifications for reducing energy use in the home. What may be considered only a small personal waste of $50 to $100 per year may indeed--when viewed in aggregate--represent a significant burden on the …

A Pursuit Of Unobtrusive Painting: A Study Of Oneself, George Schluederberg

Theses

None provided.

Sensitometric Study Of Io-Bromized Daguerreotype Plates, Mark Stebbins

Theses

This research deals with a study of speed and contrast of daguerreotype plates that receive varying levels of sensitizing to the fumes of iodine, then bromine, and finally, a second iodizing. This sensitizing operation along with mercury development and gold gilding are characteristic of the process in its most improved state. Statistical analysis reveals how iodizing and bromizing affect speed and contrast. A field study was conducted to relate the sensitometric data to images produced in the camera. The experiment suggests an exposure index of .05 for the optimum in speed. This would correspond to an exposure of roughly 1 …

The Determination Of The Operating Characteristics Of A Newspaper Camera Department By Using Queueing Analysis, Owen Smith

Theses

The methods of operation of many newspaper camera departments have been established over a long period by many different supervisors and department heads. The system may have been good once but went bad because the nature of the department's operations changed without corresponding changes in the system. The production manager must be able to detect when a system needs modifying. Presently, there are few tools available to the manager for evaluating the effectiveness of the department. The goal of this study was to demonstrate how a very simple analytical technique could be applied to a camera department's operations and, thereby, …

A General Purpose Sensitometer For Routine Sensitometric Testing, John Lumia

Theses

A Kodak Model 101 sensitometer has been improved from the original design and also been made more versatile so as to be able to expose a greater variety of general-purpose films. Improving the machine has been accomplished by modifying the shutter to produce an exposure time of 1/20 second instead of 1/5 second, thus eliminating reciprocity law failure from calculations, and also complying with the American National Standards Institute specification for exposing continuous -tone films. The previous tungsten lamp has been replaced with a tungsten-halogen lamp. Versatility has been added to the machine by introducing a xenon-flash lamp in the …

A Synthesis: Mood, Creation And Theory, Sfona Pelah

Theses

None provided.

A Study Of The Effect Of Fabric Structure And Mesh Count Variation In Indirect Stencil Preparation In A School Graphic Arts Laboratory, James Tenorio

Theses

In order to choose the best working fabric for screen printing in a school graphic arts laboratory, a representative group of eight polyester fabric samples were tested. The fabrics covered a range of mesh counts from coarse to medium and included fabrics of both multifilament and mono filament types for each mesh count. Both types were of medium grade or quality, "XX" for the multifilament and "T" for the monofilament. A specially designed resolution test object was printed by college level students in an introductory graphic arts class using indirect stencils with the sample fabrics. The stencil and five of …

A Survey Of Book Printing In The Lagos Area With Recommendations For Meeting The Need Of Universal Primary Education In Nigeria, Agbo Ella

Theses

With the sudden introduction of Universal Primary Education in Nigeria, the demand for books went up by 60%. This demand will be made acute in the 1979/80 academic year when U.P.E. is made compulsory for all school age children. A faster, quicker method of composition, camera work, stripping and platemaking, press work, bindery operation, and a good production control will increase the printers' output to meet the increased demand. The methodology of this study was based on information gathering through personal interviews. The production personnel in the book printing companies in Nigeria were asked and responded to the questions that …

A Method For Meeting Psychosocial Needs Of Institutionalized Elderly, Mary Pardue Abrahams

Theses

Not available.

Image Quality Of A Multiple-Pass Optical Contrast Enhancement Technique, Dudley Boden

Theses

People have been looking for means of recovering underdeveloped images since the inception of photography. The use of two partially reflective parallel mirrors on either side of the negative is one of the more simple possabilities. This system has been investigated to see how much contrast enhancement it provides and what affect it has on resolution and graininess. It has been found that contrast gains of 1.5 to about 3.0 times can be expected for images with densities from .14 to .30. Also the resolution of low contrast images is increased slightly and graininess is decreased by almost three times. …

Artifacts Of A Pink Childhood, Elizabeth Feick

Theses

None provided.

Cycles And Processes, Linda Brophy

Theses

None provided.

Determination Of Unknown Photographic Processing Solutions Through Buffer Curve Analysis, Richard Winslow

Theses

The determination of photographic processing solutions through buffer curve analysis was investigated to determine its advantages, limitations, and general usefulness. A microprocessor controlled titration system was set up to perform up to 16 unassisted titrations and record the data on a floppy disk system at a speed five times faster than the speed of manual titrations. The ingredients are not detectable by this analysis if their concentrations are much less than 1/10th the normality of the ingredient with the largest concentration that is detectable by this analysis. There is linearity between the concentration of a single ingredient solution and the …

The Monoprint: Techniques And Translations, Alice Kreit

Theses

None provided.

Structural Forms In Stress, Robert Nicoll

Theses

None provided.

A Comparison Of Sulfur Sensitization On Silver Bromide And Silver Iodobromide Emulsions, Frederick Marland Jr

Theses

In emulsion literature, it has been stated that silver iodobromide emulsions can be sensitized more efficiently than pure silver bromide. 20 Recently, work has been published comparing the two emulsion types, using single jet emulsions with high internal versus surface sensitivity. Tani found that when the internal / surface sensitivity ratio increased because of the addition of iodide, the ratio of sulfur sensitization also increased. 5 This showed that the increase in sensitivity upon chemical sensitization was greater for the iodobromide emulsion, and can be explained by the lower sensitivity of the unsensitized silver iodobromide. In this experiment, internal sensitivity …

Production And Evaluation Of A Holographic Lens, H. Scott Gregory

Theses

This thesis is concerned with the production of high diffraction efficiency holographic lenses for laser machining. A holographic lens is a high efficiency, low absorption phase hologram which, in this application, is used to diffract an expanded, highpower laser beam into a desired focal point or pattern. For ideal phase holograms, the coupled–wave theory, as applied by H. Kogelnik1, predicts diffraction efficiencies as high as 100%. This implies that all the power in the expanded laser beam could be diffracted into the focal point or pattern. Single focal point holographic lenses have been produced with 40% diffraction efficiency. These lenses …

The Practical Use Of The Astrolabe: Sculpture/Poem, Robert C. Malone

Theses

None provided.

A Quantitative Study Of Cuprous Oxide Photodismutation, Anne Dresden Bowman

Theses

A cuprous oxide emulsion was made using noodling and washing emulsion making techniques. An attempt to use phthalated gelatin and coagulation washing resulted in the formation of cuprous hydroxide and destruction of the phthalated gel molecule and lack of coagulation within the emulsion. Cuprous oxide was also slurried with water and coated onto unglazed porcelain plates. The density-log exposure relationship was linear for the cuprous oxide slurry and non-linear for the cuprous oxide emulsion. The cuprous oxide film gave a speed value twenty-five times greater than that obtained with the slurry. The cuprous oxide dismutation system possesses great variability and …

An Interpretation Of Color Fields Through Screen Printing, Mary Dunn

Theses

None provided.

A Study Of The Algonquin Hotel, Cheryl Jelonek

Theses

None provided.

Printed Imagery On Fabric, Sheryl Fatla

Theses

None provided.

The Mystical State, Georgia Kerr

Theses

None provided.