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Articles 9781 - 9810 of 10269
Full-Text Articles in Entire DC Network
Effects Of Varying Unsharp Masking And Contrasts In Duplicate Mammographs With Respect To Cancer Detection, Leonard Parker
Effects Of Varying Unsharp Masking And Contrasts In Duplicate Mammographs With Respect To Cancer Detection, Leonard Parker
Theses
This report examines two methods of enhancing a photographic image and applies them to duplicating mammographs. Subtractive unsharp masking, one such method, is a photo-optical edge enhancement technique. The degree of unsharpness is controlled by interspacing between the mammograph and a receiving film while exposing. The other method is optimizing the combination of masking film contrast and duplicating film contrast. Three levels of unsharpness, two levels of mask contrast and two levels of duplicating film contrast were tested. The common objective of this project and mammography in general involves the recognition and diagnosis of breast cancer. Specifically, the experimental objective …
A Computer Based Analysis Of The Effects Of Rhythm Modification On The Intelligibility Of The Speech Of Hearing And Deaf Subjects, Harry Lang
Theses
The speech of profoundly deaf persons often exhibits acquired unnatural rhythms, or a random pattern of rhythms. Inappropriate pause-time and speech-time durations are common in their speech. Specific rhythm deficiencies include abnormal rate of syllable utterance, improper grouping, poor timing and phrasing of syllables and unnatural stress for accent and emphasis. Assuming that temporal features are fundamental to the naturalness of spoken language, these abnormal timing patterns are often detractive. They may even be important factors in the decreased intelligibility of the speech. This thesis explores the significance of temporal cues in the rhythmic patterns of speech. An analysis-synthesis approach …
Evaluation And Testing Of Color Strength Measuring Methods In The Graphic Arts, Barry Sullivan, Donald Wilkalis
Evaluation And Testing Of Color Strength Measuring Methods In The Graphic Arts, Barry Sullivan, Donald Wilkalis
Theses
The term color strength is defined as the hue, saturation, and brightness of an ink in the C.I.E. scheme of color specification. With this definition two color strength measuring methods are evaluated on a common basis. A colorimeter is used to read samples produced with varied ink-film thicknesses and varied ratios of white pigment to sample ink. Colorimetric properties are plotted on a U.C.S. diagram with coordinates modified to include the C.I.E. brightness factor W*. The ink-film thickness method is chosen as the preferred method for determining color strength.
Photosolubilization Of Cuprous Bromide, Richard Frisicano, Jeffrey Harris
Photosolubilization Of Cuprous Bromide, Richard Frisicano, Jeffrey Harris
Theses
A dissolution system called photosolubilization invented in 1964 by R.K. Blake and applied to silver halide was investigated to determine the feasibility of adapting the system from silver to copper. After cuprous bromide was shown to be light sensitive and able to be insolubilized, using a mercaptan ( 2-mercapto-4-phenylthiazole ), many of the parameters affecting this process were determined. The best photosolubilization was achieved using a 1/100 mole ratio of mercaptan to cuprous bromide. Insolubilization improved with increased mercaptan digestion time while pH appeared to have little effect on this mechanism. PH did change final print-out density. Increased sensitivity was …
Silent Communications: Barbourville, Kentucky, Douglas Rea
The Influence Of The Technologist, Image Size And Image Density On The Visual Measurement Of The Size Of Microimages, Walter Shafer
The Influence Of The Technologist, Image Size And Image Density On The Visual Measurement Of The Size Of Microimages, Walter Shafer
Theses
None provided.
A Philosophical And Psychological Examination Of Aesthetic Choice, Elaine Castiglione
A Philosophical And Psychological Examination Of Aesthetic Choice, Elaine Castiglione
Theses
None provided.
Job Satisfaction (An Original Study Of Xerox First Line Managers In The Field Organization), Barth Kelly
Job Satisfaction (An Original Study Of Xerox First Line Managers In The Field Organization), Barth Kelly
Theses
None provided.
The Market In India For Optical Goods, P.S. Bhullar
Reflections, Tana Kellner
The Position Of Women Artists Within The Aesthetic Community, Ann Kalmbach
The Position Of Women Artists Within The Aesthetic Community, Ann Kalmbach
Theses
None provided.
Laboratory Design For Instruction In Long Distance Communication For The Deaf, George Schieber
Laboratory Design For Instruction In Long Distance Communication For The Deaf, George Schieber
Theses
None provided.
Color Photograms, Weston Kemp
Environmental Communications, Lee Green
Constructed Objects, Dennis Mcshane
The Public Communications Service: An Urbanarium Program To Assist Community Groups With Improved Communications, Barbara Brecher
The Public Communications Service: An Urbanarium Program To Assist Community Groups With Improved Communications, Barbara Brecher
Theses
None provided.
Study Of Rochester Residents Current Attitudes And Knowledge Of New York City Banks Located In Rochester, New York, Dennis Easter
Study Of Rochester Residents Current Attitudes And Knowledge Of New York City Banks Located In Rochester, New York, Dennis Easter
Theses
None provided.
An Attempt To Define Common Characteristics Among Certain Service Industries, William O'Connor
An Attempt To Define Common Characteristics Among Certain Service Industries, William O'Connor
Theses
None provided.
A Study Of The Effect Of Ink Tack, Printing Pressure, And Printing Speed On Toning In The Driographic System, Thomas Rigg
A Study Of The Effect Of Ink Tack, Printing Pressure, And Printing Speed On Toning In The Driographic System, Thomas Rigg
Theses
An investigation was made into one of the newer planographic printing plates, specifically 3M's Dry Plate. This plate is part of the system more popularly known as driography. As with many new processes, driography is beset with several problems. These include plate durability, substrate suitability, and toning. This study deals with the problem of toning and a. method for investigating it. In driography, toning is defined as the inking of the non-image background of the plate. Several factors are thought to have an effect on the amount of toning. Factors such as ink tack, ink temperature, room temperature, humidity, speed, …
Suggested Guidelines For A Printing Program In Secondary Education, Raymond Torella
Suggested Guidelines For A Printing Program In Secondary Education, Raymond Torella
Theses
None provided.
A Study Of Industry-Prepared Instructional Aids And Services And Their Use By Graphic Arts Educators, Jere Rentzel
A Study Of Industry-Prepared Instructional Aids And Services And Their Use By Graphic Arts Educators, Jere Rentzel
Theses
The primary purpose of this study was to determine which instructional aids and services graphic arts teachers felt were needed to improve their programs and themselves, and to compare those desired aids and services to the ones currently being provided by A.B. Dick, Addressograph-Multigraph, DuPont, Eastman Kodak, and the 3M Company. The secondary purpose was to develop a publishable list of instructional aids and services for graphic arts teachers. The graphic arts teachers' needs were solicited through a survey form completed by Rochester, New York, area teachers and by those graphic arts teachers who attended a special interest session, "New …
Self, Peter Knickerbocker
Design And Construction Of Sinusoidal Targets For Resolving Power Cameras, Peter Hertzmann
Design And Construction Of Sinusoidal Targets For Resolving Power Cameras, Peter Hertzmann
Theses
None provided.
Figurative Tapestry, Lynne Bull
Enhancement Of Color Images By Modulation Of The Luminous Component, David Feldman
Enhancement Of Color Images By Modulation Of The Luminous Component, David Feldman
Theses
None provided.
Resolution Targets As A Measure Of Detail In Reproduction Of Engineering Drawings, Thomas Pratuch
Resolution Targets As A Measure Of Detail In Reproduction Of Engineering Drawings, Thomas Pratuch
Theses
The purpose of the experimentation was to abstract the problem of reading an engineering drawing so untrained observers could be used, and in so doing, find the minimum detail of drafted materials. Once the minimum detail condition was established, testing was to continue to find the procedures necessary to test for correlation between resolution targets and the minimum detail. The final goal was to reach a set of recommendations for further work and reduce the amount of unnecessary work for later experimenters. In short this paper was to help bring the testing of resolution and drafted materials to the same …
Handicapped Independence, Dale Landon
Soft Celadon Slabs, Joan Johnson
A Photographic Recorder For Experimental Parachute Test Data, Peter Vredenburg
A Photographic Recorder For Experimental Parachute Test Data, Peter Vredenburg
Theses
Improvement in the ability to record and retrieve experimental data in general enhances the degree of utilization of information. Recent advances in electronic logic circuits, and the advent of the light emitting diode, make possible the utilization of photography as an initial recording medium. This improves the retrieval time for data, since it can be reduced and coded prior to recording with modern solid state circuits. A feasibility study, and construction of a prototype recorder was done for application to experimental parachute test data. The recorder monitors strain gage response at a sample rate of 20 per second, converts the …
An Evaluation Of The Applicability Of A.N.S.I. Standard Ph-2.9 To Contemporary Medical X-Ray Films Designated For Automated Processing, David Binko
Theses
Three medium speed screen-type medical x-ray films were exposed and manually processed in accordance with the procedures outlined in A.N.S.I. Standard PH-2.9, "Sensitometry of Medical X-Ray Films". Subsequent to processing, all samples were evaluated upon the response variables of base plus fog density, maximum density, A.N.S.I. speed, and A.N.S.I. contrast. A second set of film samples, exposed identically to the manually processed samples, were processed in a ninety-second cycle automated system. After sensitometric evaluation of the automated samples, a statistical comparison of the results obtained by both processing procedures was executed. In the second phase of the investigation, a factorial …