Digital Commons Network^™

Prefeasibility Study Of Flexible Manufacturing System, Patrice Gerault

Theses

Most major companies over the world are or intend to go into Flexible Manufacturing System. But, FMS is not as easy to implement as most cf the other equipments. It affects the whole company and careful studies must be done before parchasing it.

After a description of this new system, this paper reviews the effects introduced by FMS and the alements of savings or surcosts in comparison to conventional systems ; but no numerical evaluations are stated.

This paper gives a frame to any company which wants to undertake a prefeasibility study.

Reliability Screening Of Transformers, Bharat M. Shah

Theses

The purpose of this project is to study screening of components from the reliability point of view. The component used is electronic transformer. The screen chosen is Electrical Noise generated in the transformer insulation system and the failure mode selected is leakage current in the transformer insulation.

Experiments were conducted to monitor electrical noise generated due to partial ionization of the tiny air gaps in the transformer insulation. The voltage stress, regiured to be applied to the insulation system, for constant 59 units of noise, recorded for the sample of three hundred seventeen transformers.

The voltage readings were analyzed statiscally …

Information Theoretic Metrics For The Assessment Of Digital Image-Tone Restored Images, Paul W. Melnychuck

Theses

Digital image-tone restoration is examined in terms of information theoretic-based measurements. The metrics illustrate the relative degree of restorability of a 6-stop underexposure range on Kodak Tri-X pan film. An image chain model is developed to account for the discrete nature of sampled images used in digital image processing. The model includes the major system components (from object to viewed image) from which the system signal-tonoise ratio is calculated. Quantization noise and clipping are treated as signal-dependent, additive noise sources, and are shown to play a major role in degrading restored images. Although the eye characteristics are not included in …

The Visual Box, Candace Lorimer

Theses

Not Included

Diversion Of Force, Linda J. Moughemer

Theses

I intend to complete a body of work using the concept of diversion of force as a departure point. A paper which will include the organic and inorganic scientific references which have affected my thinking and visual imagery will accompany and support the studio work. Other sources which have aided my exploration of the subject will also appear in the written presentation.

Ambiguous Environments, Mark A. Dreimiller

Theses

Not Included

Constructed Clothing: Fiber To Finish, Catherine Grota Sahlin

Theses

None provided.

The Horse: Structure And Form In Nature, Karen Ackoff

Theses

None provided.

Mystery And Ambiguity Of Space, Sister Anne Demare

Theses

Not Included

A Microprocessor Based Hybrid System For Digital Error Correction, Peter H. Sohn

Theses

The design of a microprocessor based hybrid system for digital error correction is presented. It is shown that such a system allows for implementation of several cyclic codes at a variety of throughput rates providing variable degrees of error correction depending on current user requirements. The theoretical basis for encoding and decoding of binary BCH codes is reviewed. Design and implementation of system hardware and software are described. A method for injection of independent bit errors with controllable statistics into the system is developed, and its accuracy verified by computer simulation. This method of controllable error injection is used to …

Investigations Into Rates And Mechanisms Of Mercury Depuration In The Killifish, Fundulus Heteroclitus, Joanne A. Korpanty

Theses

Metallothionein (MT) and glutathione (GSH) have been shown in mammalian research to play a role in the sequestration and depuration of mercury. The sulfhydryl groups on both these peptides have a strong affinity for mercury, MT for Hg²⁺ and GSH for CH₃Hg⁺. In this study, killifish (Fundulus heteroclitus) were force-fed one piece of squid laced with labelled mercuric nitrate to give a final food concentration of 20 ppm ²⁰³Hg²⁺ and 0.03 -0.05 µg g-1 Hg²⁺ total dose. Most of the mercury, 84.1 ± 12.1% (mean ± standard deviation), is depurated within the …

Microcomputer Controlled Instrumentation System For Studies Of Metabolic Changes In Rats, Murat Dertlioglu

Theses

The system measures the respiratory exchange in rats in a controlled experiment. An interface unit provides data, received from several measurement instruments such as gas analyzers, an electronic flowmeters, electronic thermometer and an electronic hygrometer, to the computer. The data is gathered from different chambers in a multiplexed mode.

The computer samples the chambers sequentially and prints out the results and stores them on the disk. The sampling duration of each chamber and the number of the rats to be tested can be programmed. The system can perform experiments with twelve animals, in the following arrangments, either one group of …

Computer Based Instrumentation System For Measurement Of Cardiac Output In Small Animals, Prasad L. Gavaskar

Theses

The task of the instrumentation system is to measure cardiac output in animals like rats, dogs, etc. A thermal-dilution method is used for this purpose. The temperature change due to injection of saline is picked up by thermo-couple microprobes implanted in the blood-vessel. The signal after conditioning is fed to a data acquisition system controlled by a computer.

With the help of a computer it is thus possible to monitor and control an experiment on several animals. The computer can sample the chambers sequentially. The sampling cycle duration and frequency are programmable. The data is collected and processed to determine …

Automated Instrumentation System To Monitor Behavioral Experiments, Dilip S. Gokhale

Theses

An instrumentation system has been designed to monitor behavioral experiments on monkeys. This instrumentation system is capable of performing these experiments in an automated manner without any human intervention. It is capable of monitoring these experiments concurrently in six boxes. It exhibits several features that make it more versatile than previous instrumentation systems. It is also capable of storing the data generated on to a floppy disk and later transmitting it to the mainframe.

Another feature that makes it more versatile is the flexibility of the system. Presently it is configured to run experiments with variable interval schedules. However with …

Tourist Development And Environmental Impact Of Future Airport Construction In Athens, Greece, Vasilios Michael Halkias

Theses

The present thesis is an overall study of the suitablility of the eastern region of the Attica Peninsula in Greece, for a Tourist Development. The future construction of the new International Airport of Athens within the region is a significant factor that has been taken into account for the study.

It also examines and projects the Environmental Impacts due to the Airport construction.

The description of the studied area is presented by maps and refers to the Environmental Inventory. This Inventory examines the Water Resources of the region, Topography, Land Uses, Transportation System, Air and Noise Quality, Archaeological Sites, Utilities, …

Decision Rules Applied To Spread Spectrum Signal Detection, Richard Jae Kim

Theses

Decision rules for detection of spread spectrum signals were investigated. For each decision rule, error and erasure probabilities were analyzed. The obtained data was used to plot PE vs Pe for constant signal-to-noise ratio (SNR). With the use of the probability of a word error curves the optimum threshold setting was found for a given SNR.

FSK (orthogonal signalling) and PSK (antipodal signalling) were considered for modulating the chips. When the PE vs Pe plots for FSK and PSK were compared, PSK performed better than FSK by a ratio of 6 dB.

Finally, analog and digital correlation of the received …

The Effects Of Feedback On Operator Performance In A Production Environment, Diane L. Knoll

Theses

The objective of this thesis and it's associated research is to analyze the positive effects of feedback in a production environment. The experimental data was collected at the Ortho Pharmaceutical Corporation in New Jersey and a subsidiary company, The J. T. Clark Company, in Illinois.

The experiments involved three types of feedback indirect feedback provided to a large group of packaging operators, direct feedback provided to a small group of temporary packaging operators in a training situation, and direct feedback provided to an entire workforce of operators performing dissimilar, but interrelated tasks.

The results of these experiments were consistent with …

A Systematic Program For The Management Of A Sanitation Function In The Food Industry, John Joseph Sprainitis

Theses

The sanitation of food processing and packaging facilities is a labor intensive activity. As with any labor intensive operation, effective planning and control of the manpower is necessary. The more effective tie management, the more effective and productive the manpower will be.

As the effectiveness of the management improves, the cost effectiveness of the manpower will improve.

In dealing with the manufacturing of foods, there are numerous government regulations, of which sanitation plays a key role. Misunderstanding the impact of these regulations, and either over- or under-reacting to them, can result in unnecessary costs or severe problems.

In order to …

An Investigation Of Characteristics Of Blood Velocity In A Simulated Circulation System, Yung-Gang Wu

Theses

The major objective of this thesis is to find the relationship between the blood velocity and the stenosis of the vessel. Tests were performed with different degrees of stenosis at varied logitudinal positions from the testing probe in the vessel of a Z-80 microprocessor controlled artificial circulation system.

Three methods were used to detect the velocity in the vessel: continuous wave Doppler, Pulse Doppler, and a hot-film device. The first method can get the average velocity, while the latter two have the capability to find a velocity profile, and all are important indicators to the arterial occlusion phenomenon.

An analysis …

Risk Assessment For New Products In Office Automation, Dolores Ann Canale

Theses

As investors survey the industrial growth of technology for the late 1980's one area leading the range for large potential growth is the area of office automation. Though this area has been under heavy speculation by many large firms (such as IBM, AT&T and EXXON) for the pass ten years it still remains an unexplored market for many investors. The objective of this research paper is to study the risks companies. will face developing products for this horizon.

Investors believe that success in this area, as well as, many other areas of engineering rely in large measure on the willingness …

Successful Management Techniques For Introduction Of Computerized Systems In A Production Facility, Michael James Boyle

Theses

This thesis surveys the potential for introducing significant organizational change into a manufacturing environment which is undergoing large scale capital improvement.

The first portion describes both the organizational and technological barriers present at a specific manufacturing facility. The capabilities of a computer based process control system are detailed along with its ability to fulfill the employer's particular business needs.

The next portion details the work necessary to train both management and production operators, not only on how to use this computer based equipment, but also how they themselves must change their personal modes of thinking in order to carry out …

Performance Modeling And Simulation Of Multiple Microcomputer Systems, Moorthy Narayana Hariharan

Theses

Multiple processor systems are the logical choice for applications demanding high computing power, throughput and reliability. Moderately coupled Multiple Microprocessor systems can be applied to a variety of applications demanding high performance. The structure of Multiple Microprocessor systems is examined. Various interconnection structures are analysed for performance comparisons.

Queueing theory is a powerful tool in modeling and analysing Computer systems. Queueing models are developed for popular Multiple processor interconnection topolog es like the Shared memory, Shared bus, Star and Loop configurations.

The usefulness of Digital computer Simulation techniques in estimating the performance of Multiple processor systems is demonstrated through a …

A Study Of Worker Motivation, Farid Uddin Ahmad

Theses

This thesis mainly deals with the motivation of the production managers, engineers, technicians and production workers. The purpose is to emphasize the need for providing due motivations to an important work group of the industry who are largely ignored. An attempt has been made to amply demonstrate the various techniques for worker motivation. As the study of standard motivational theories alone cannot solve the complex motivational problems, all possible efforts have been made to relate, integrate and blend the theories with actual applications in the organizations. All the relevant and important issues connected with worker motivation have been highlighted. Points …

Quantitative Evaluation Of Substituent Effects On Stabilization Energies Of Strained And Unsaturated Molecules, Tyler Arthur Stevenson

Theses

Thermodynamic stabilization energies are presented for a series of monosubstituted vinyl, cyclopropyl, ethynyl, and phenyl compounds. The energies are calculated using ab initio molecular orbital calculations at the 4-31G level, and also with published experimental heat of formation data. Correlation analyses are then attempted with the dual substituent parameter approach with the stabilization energies. The analyses are also attempted with a triple-parameter approach using Topsom's theoretically calculated X, F, and Ro constants. Among the findings are the facts that π-donating substituents correlate well, while π-accepting substituents do not. Indications of the relative sensitivities of hydrocarbon frameworks to substituent electrostatic and …

Ceramic Sculpture, Hans Rene Schroder

Theses

I intend to create ceramic sculpture that will contrast and combine personal references (real or imagined) from natural and man-made environments. Within this context, I wish to explore the concepts of volume, structure, texture, and their mutual interactions. Another concern will be the use of color in order to enhance the sense of the object's construction, but also to point out the natural, random elements of ceramic processes.

The Second Moment Method, A New Way To Test A Lens, Christopher Curtis

Theses

The second moment method is proposed as a method of obtaining a one dimensional approximation to a two dimensional angularly averaged modulation transfer function for low spatial frequencies. For two orthogonal knife-edge scans of a point spread function, the second moments about the centroid of the corresponding line spread functions are determined. The two second moment values are then used to approximate the two dimensional angularly averaged modulation transfer function. Two rotationally asymmetric point spread functions were used to test the approximation, an equilateral triangle and a rectangle. The results show, for both cases, that in the 1.0 to 0.5 …

Color Vision Tests Using A Calibrated Color Monitor Controlled By A Microprocessor, David Wolf

Theses

A feasibility study was performed to determine if colors on a CRT could be measured accurately and then controlled by a computer to provide a means of performing color vision tests. Benefits from using a calibrated computer/monitor system could be decreased testing time, exact diagnosis, and possibly the means of quantifing the degree of the deficiency. The Atari 800XL Computer with a Sakata color monitor were used for the experimentation due to their low cost, availability, and ability to create the largest number of colors of any computer in the same price range. The system was calibrated and color vision …

The Vitality Of Portraiture, Diana Smolenski

Theses

I am a painter of people, of faces, recording lives on canvas. I would not say that I love people. They make me nervous and uncomfortable (particularly in large crowds); however, they fascinate me. I have spent hours observing their mannerisms and expressions. I have absorbed through them much of what life offers simply by watching them pass by me on streets, buses, and in cafes, parks, barrooms, and diners . I am interested in describing people through visual imagery and revealing who they are to others. My concern is not merely to duplicate reality, but to seek a higher …

Development Of A Handbook For Independent Studies In Small High Schools, Kathryn M. O'Connor

Theses

The purpose of this study was to develop a handbook for independent study programs for small high schools. Small private high schools in the St. Louis area were surveyed in regard to their independent study programs. It was found that schools using such programs were enthusiastic about the results they produced. Current literature also showed the value of independent study in promoting higher level thinking skills among students. The survey results and information gathered from current literature were then used to formulate a handbook for independent study programs at small high schools.

Developing Positive Attitudes In Non-Handicapped Children Toward The Handicapped: A Third Grade Curriculum Guide, Marie E. Haupt

Theses

The major purpose of this curriculum is to develop positive attitudes in nonhandicapped children toward the handicapped. Public schools are mandated by law to include handicapped persons in their educational programs. The introduction explains attitudes of nonhandicapped children toward the handicapped, whether these attitudes can be changed, and how they can be changed.

This curriculum is for third grade and includes l earning about the visually impaired/blind, hearing impaired/deaf, health and physically impaired, learning disabled, mentally retarded, speech impaired, and emotionally and behaviorally disturbed. The media and materials used are books, films, filmstrips, simulated activities, role play , discussions, guest …