Digital Commons Network^™

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 …

Engineering A Primary Waste Treatment Plant, Edwin O. Onwawoma

Theses

This thesis deals with the design and construction of a primary waste treatment plant. The scope of work covered here, includes waste sampling and characterization, process design data gathering, process and mechanical design, cost estimate, and a general discussion of the construction and start-up.

In the development of this work, it is assumed that a decision has been made to build the waste treatment plant, using a known process. Therefore, economic evaluations designed to determine return on investment and selection of a process, will not be discussed. The impact the capital investment associated with the waste treatment facility has on …

Silent Communications: Barbourville, Kentucky, Douglas Rea

Theses

None provided.

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

Theses

None provided.

Effect Of Mixing On Polymerizations In Batch Reactors, John Guy Steenrod

Theses

The effects of mixing on polymerizations in batch reactors are examined theoretically for initiations by thermal decomposition of catalyst and by absorption of ionizing radiation. Mathematical expressions for predicting the first three moments of the dead polymer size distribution are presented. Two extreme mixing states. perfect and no mixing. are considered. It is shown that in batch reactors mixing in any direction in which nonuniform initiations exist increases the polymerization reaction rate and the number average molecular weight, and decreases the weight average and the polydispersity.

Experimentally, the effects of mixing were studied in a solution polymerization system, in a …

Evaluation Of Herington General Integral Test For Vapor-Liquid Equilibrium Data, Raja Gopal Nori

Theses

A new set of general integral tests for the thermodynamic consistency of isothermal and isobaric equilibrium data of binary systems was proposed by E.F.G. Herington.

The systems Benzene-Cyclohexane and Benzene-n-Propanol were examined using Herington integral test-. The data used included sets of data known to be in error. One set was, in effect, at true vapor-liquid equilibrium (the data of literature) but the other data was obtained when the system was inadequately insulated and heated.

Heringtan test showed significantly different estimates for heats of mixing for the cases involved. The best data showed heats of mixing near the theoratical values. …

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

Theses

None provided.

Reflections, Tana Kellner

Theses

None provided.

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

Theses

None provided.

Color Photograms, Weston Kemp

Theses

None provided.

Environmental Communications, Lee Green

Theses

None provided.

Industrialized-Subsidized Housing In The Hackensack Meadowlands, Andrew Carl Gildersleeve

Theses

New Jersey as well as the rest of the nation is beginning to feel the pinch of what has been termed the housing crisis. The products of the World War II baby-boom are now reaching the age where they require homes of their own, making the demand for good quality low-cost housing very high. At the same time, the demand for good public housing continues to grow and we are learning that our previous efforts in this field have been far from satisfactory.

In the course of this study I have looked into the possibilities of solving a portion of …

A Study Of The Vibrational Spectra Of Some Monosubstituted Pyridines, Hussein Ibrahim Abdel-Shafy

Theses

Infrared spectra in the range (4000-250 cm^-1) and Raman spectra in the range (4000-150 cm^-1) of pyridine, 2-, 3- and 4-chloro-, bromo-, and methylpyridines, 2-fluoro-, 2-amino and 4-ethylpyridines have been measured. The spectra, vibration and assignments of the observed frequencies of 2-amino-, and 4-ethylpyridines are presented for the first time. The infrared data for 2-fluoropyridine is combined with the previously reported Raman data of Stephenson and Voelz to allow complete vibrational assignments for this compound for the first time. Frequency assignments for the other molecules are re-examined and where necessary changes and/or additions in frequency assignments …

Rheo-Optical Properties Of Polyisobutylene, Russell B. Biss

Theses

This study presents quantitative experimental data on the various stress-optical characteristics of polymer liquids, specifically, polyisobutylene. Through the use of a concentric cylinder rheogoniometer and a rotational viscometer, the temperature effects of a newtonian polyisobutylene liquid. was studied and was found to have a stress-optical coefficient independent of shear stress and minor temperature changes. The experiments confirm that the birefringence is a known function of the extinction angle and the shear stress. Various polyisobutylene liquids were used in a simple flow device to observe the birefringence in the 1-3 plane and the 2-3 plane. The results indicate that the 1-3 …

Solvents Screening For Hydrocarbons Separation Of Close Molar Volumes, Dilip K. Kapasi

Theses

The approximate physical model for solute-solvent inter?actions presented by J, M, Prausnitz and R, Anderson¹ is briefly discussed, Applicability of Weimer, Prausnitz³ and Helpinstill, Van Winkle⁷ models is investigated using experimental values of activity coefficients for C₅ hydrocarbons in 13 solvents including one nonpolar and 12 polar solvents. Independent correlations, based on our experimental values at 45°C for normal and isopentane have been developed. Although the required thermodynamic properties are obtained through a comparative analysis of all the available and estimated methods, dependable values of activity coefficients for Isopentane and 1-Pentene could not be obtained through …

The Effect Of Dry-Blending High Density Polyethylene On Final Product Properties, Charles H. Klestadt

Theses

The incentives for Dry-Blending Polyethylenes of varying property type may be economic gain, improved product quality, or both. The manufacturers' latest mode of operation involves seeking to meet their customers' needs with a product line made by using one catalyst system and operating at maximum capacity, while varying the fewest possible control parameters. Off-spec materials and on-spec materials not fitting customers' requirements are two prime targets for additional profits with proper dry blending techniques. The approach used in solving the problem involved starting with an existing product line and converting these products into a number of experimental blends. The blends …

The Thermal Degradation Of Polyvinyl Alcohol, Carlos Eduardo Ortiz

Theses

The thermal degradation of polyvinyl alcohol has been investigated using mass spectrometry, differential thermal analysis, and infrared spectroscopy unlike previous investigators, formaldehyde and acrolein were not observed volatiles. In addition, acetic acid was observed, a product not reported previously.

Constructed Objects, Dennis Mcshane

Theses

Not Included

The Public Communications Service: An Urbanarium Program To Assist Community Groups With Improved Communications, Barbara Brecher

Theses

None provided.

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

Theses

None provided.

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 …

Soft Celadon Slabs, Joan Johnson

Theses

None provided.

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 …

Figurative Tapestry, Lynne Bull

Theses

None provided.

Design And Construction Of Sinusoidal Targets For Resolving Power Cameras, Peter Hertzmann

Theses

None provided.

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 …