Digital Commons Network^™

Simulation Of Aids Patient Detoxification By An Extracorporeal Device And Related Experimental Studies, Mansoor Yusuf Kapadvanjwala

Theses

A simple numerical simulation of an AIDS patient detoxification by an extracorporeal device for the removal of virus has been designed. The mathematical model accounts for healthy white cells (W) attacking and destroying the virus (V), while at the same time the virus attacks and infects certain white cells. The infected white cells (W_i) serve as a site for viral growth, and finally the cell is lysed, releasing a large number of viruses in the blood stream. This model can be used to predict concentrations over a given period for the patient.

The device incorporates an antitwister mechanism …

A Productivity Measurement System For Human Resources Management, Vivian C. Keenan

Theses

A Productivity Measurement System was designed to meet the needs of a company's Human Resources management. This thesis presents the design, testing, and implementation of this system.

During the design stage, the jobs and main activities were identified and the key volume indicators were established. Data was collected using time studies, work sampling techniques and historical data. Time studies and historical data were used primarily to measure the information for the activities. Work sampling techniques proved to be very effective in obtaining measurements for personal time and unavoidable delays.

The data was analyzed and time standards were set for the …

The Comparison Of Different Quality Of Working Life Among Countries From A Cross-Cultural Perspective, Jih-Ping Ouyang

Theses

The objective of this study is to focus on the factors underlying the prosperity of Taiwan from a cross-cultural perspective by utilizing Hofstede's (1980) theory and England's (1983) theory. It presents the scores on Hofstede's four indices (Power Distance, Uncertainty Avoidance, Individualism and Masculinity), using it to compare with countries, and touches upon England's eleven work goals.

Through research and analysis comparisons of the differences and similarities between Taiwan (Republic of China) and the other countries are found and based on these, the modifications can be made to improve the current managerial pattern. For the past few years, there has …

A Word Based Data Compression Using Arithmetic Encoding, Christopher Dean Peckham

Theses

It is usually difficult to compress data from a statistically unknown source and yield a good compression ratio. Using the fact that words are the fundamental basis of the written language, a data compression scheme based on words should yield high compression ratios. Discussed here is a compression scheme that gathers words from the source stream and places them in a dictionary, or word list, to use later in the coding, thereby becoming adaptive to the words in a given file without prior knowledge of the source. When a word is in the word dictionary, it is encoded by its …

Computerizing The Human Resource Information System, Dur-Chih Wang

Theses

In the past twenty years we have moved from an industrial society to an information society in which 60% (Personnel, 1985) of the work force is occupied with the creation, processing, and distribution of information. Because of this change in work distribute effective management of information is now and continue to be the key to employee productivity, competitive strength, and economic achievement. The business community is coming to realize that after people, information is its most important asset. At the same time, many aggressive firms are learning to use information technology and their people as strategic weapons to gain a …

Solid Modeling Interactive Interface For Design Drafting, Edward Maruggi

Theses

Providing certain Solid Modeling software systems with Computer-Aided Design Drafting facilities allows these systems to produce industry acceptable engineering drawing displays. A method is put forth to provide these facilities through the design and implemention of a two-dimensional interactive graphics package that interfaces with these systems. This allows other graphical and textual elements to be added to displays produced by the Solid Modeling systems.

Breast Cancer: Options In Care And Treatment, Elliot Friedman

Theses

None provided.

Assessing Writing Skills Of Grades 3-6 In The Francis Howell School District, Ronald D. Brewer

Theses

This project was an exercise in assessment of student writing in the Francis Howell School District. This district began a writing program in the fall of 1986, emphasizing 45 minutes of daily writing instruction and practice each school day . After approximately 44 weeks of exposure to the program, the assessment was conducted in the winter of 1988.

A published narrative essay test, the CAT Writing Assessment System, was given to 280 randomly selected students in grades three through six. Of these, 80 were used in the training of a rater team which then inter-scored the remaining 200 essays. They …

The Embryological Development Of The Tilapiine Fishes, Michelle Katz

Theses

None provided.

Thesis Documentation, Judith A. Levy

Theses

None provided.

Viscoelastic Damping Of Beams, Mansour Messalti

Theses

The composite damping characteristics of a viscoelastic sandwich beam are investigated. The sandwich consists of an elastic central layer coated on both sides with a viscoelastic material and two outer layers made out of the same material as the central layer. The composite beam is investigated for damping effectiveness. As in the work of DiTaranto and Kerwin, and also Mead, the energy dissipation due to the vibratory motion of the system is assumed to take place due to the shear deformation of the viscoelastic layer only. The assumption that the outer layers do not stretch or contract during bending, further …

"Eggspressions", Eyda Jové

Theses

The purpose of this thesis is to create an animation for entertainment utilizing the computer as opposed to traditional animation. I intend to use the computer as a tool to tell a visual story rather than performing visual tricks and techniques so often found in computer animation. The animation will tell a story in which the characters will have visual appeal in order to involve the viewer. It is also possible that I may integrate some video techniques. The Genigraphics computer systems will be used incorporating both the paintbox and animation system.

Diagnosis Expert System With Automated Query To A Process Control System, Richard Winslow

Theses

This thesis describes the development of a diagnosis expert system for an automated process control facility. To reduce the number of user responses to the expert system, a network interface was created between the expert system and the process control computer. This document focuses on the unique concerns associated with the development, validation, and implementation of an expert system that is directly interfaced to a process control system.

Instructional Material Through Computers And Photography, Joseph Kevin Newbill

Theses

This thesis report documents the design and production of an audiovisual program for the Industrial, Interior, and Packaging Design Department at Rochester Institute of Technology. The curriculum structure, beginning with the freshman year and ending with the senior year, was examined in this program. The faculty and students were portrayed within their multi-faceted classroom environment. Additional ly, this program was designed to give prospective students an overall view of each design field. Attention was directed towards capturing the challenging activities that design students encounter during their educational experience.

Computer Use In The Warren County Riii School District: A Proposal For The Implementation Of A Computer Lab Program In The Elementary School, Debbie Reese

Theses

A problem faced by many schools in the 1980s is how to approach computer ir1struction in the elementary grades. Schools have moved into a new technological realm with the advent of the modern microcomputer. The focus of this project was to investigate current trends in computer education in the elementary grades in respect to computer placement within the schools and content of computer education programs. The paper addresses, specifically, the lack of a computer program in the Warren County RIII School District and the rationale for developing a computer lab in the elementary school. An interim plan is also proposed, …

A Simple Solubility Theory Combining Solubility Parameter And Lewis Acid-Base Concepts, Lan Tuyet Evans

Theses

A simple model of liquid / liquid solubility has been developed. The existing solubility parameter theory which tries to explain solvent - salute interaction in terms of dispersion , polar , and hydrogen bonding interactions is discussed. The current theory has been widely used qualitatively but can not be used quantitatively due largely to incorrect modeling of the hydrogen bonding interactions. This research proposes modifications to the current solubility parameter theory that are designed to overcome the problems encountered with hydrogen bonding interactions in which the hydrogen bonding interactions are described as a special case of more general Lewis acid …

Extraction Methods For Iodine From Crude Oil Systems For The Determination Of 129i/127i Ratios, Sharon Tullai

Theses

129I/127I ratios were investigated as a potential for dating and tracing studies of crude oil systems. 129I/127I ratios were measured using a tandem accelerator mass spectrometer located at the University of Rochester. Carrier-free methods for AgI preparation are discussed for formation waters, petroleum, and source and reservoir rocks. Formation water extractions include the use of oxidizing and reducing agents to extract iodine into carbon tetrachloride. Samples prepared in this way gave good ratio measurements with no contamination. Two methods for iodine extraction from petroleum are employed. The first is a sodium biphenyl extraction which will extract up to 90% of …

Estimation Of In-Situ Compression Index Of Contaminated Clays Using The Electrical Method, Prasanna Ratnaweera

Theses

For contaminated clay soils, it has been found that current testing methods to determine compressibility characteristics do not truly identify the physico-chemiral interaction present in the soil-pore fluid-electrolyte system. Most methods are virtually impracticable due to various reasons such as evaporation of pore-fluid, difficulty of handling toxic chemicals, etc. Also, destructive test methods may not maintain in-situ conditions while testing.

The electrical properties of soils, the dielectric dispersion in particular is considered to represent the amount of physico-chemical interaction present in the soil-pore fluid-electrolyte system. For uncontaminated soils, correlations between the dielectric dispersion and the slope of the isotropic consolidation …

Color Theory As Applied To Typographic Letterforms, Mark Lewis

Theses

The purpose of this thesis is to investigate color theories through the use of typography while using the Pantone Color System as a guide. The examples used are not, nor were they intended to be, the best or only definition of a particular color theory. Rather, they represent one solution to a given problem. In this thesis I intended to illustrate color effects, (by combining color and typography,) that cannot be achieved through the use of colored shapes alone.

Dbprolog: A Prolog/Relational Database Interface, Diane Oagley

Theses

dbProlog is a prototype system that provides a C-Prolog user access to data in an external relational database via both loose and tight coupling. To the application programmer, dbProlog is a group of six built-in Prolog predicates that effect communication between a C-Prolog process and a database management system process. Prolog application program statements may be written using the six predicates to make the interface transparent to an end-user. The system is based on a "driver" process that must be customized to the interfaced DBMS and whose primary function is the translation of requests and replies between C-Prolog and the …

A Window-Oriented User-Interface For Image Processing Systems On Unix Based Workstations., Sandeep Mehta

Theses

The advent of digital image processing has led to the availability of a very large number of software systems. However there is an absence of a cohesive general-purpose image processing environment isolated from hardware or the underlying operating system. The trend in computing in science and engineering, is towards distributed workstations, especially with the availability of high-performance microprocessors. Hence there is a need for a unified software environment on workstations for use in scientific applications. This thesis describes the design and implementation of a window oriented user-interface. The interface runs on top of a Image Processing system, running on workstations …

Medical Illustration On The Macintosh Personal Computer, Bobby Louis Pitts

Theses

None provided.

Team Development Is An Industry Management Tool Whose Time Has Arrived, Jacquelyn Jean Smith

Theses

This study examines the evolution and practice of participative management within the General Motors Wentzville Assembly Center, with a focus on team development, labor–management relations, and organizational communication. The research situates the Wentzville plant as a case study in the broader context of the U.S. automotive industry’s efforts to implement participative programs during the late 20th century, including quality circles, team-based structures, and employee involvement initiatives.

The thesis highlights the challenges and opportunities faced by both management and the United Auto Workers (UAW) in adopting cooperative approaches to decision-making and problem-solving. Key themes include the role of trust and transparency …

Utilization Of The Theory Of Constraints Approach For Improving A Manufacturing Enterprise Profitability : A Case Study, Yaron Chaut

Theses

The past two decades have been a difficult period for the U.S. as it lost its dominant position in one manufacturing industry after another to Japan. The American worker was initially blamed for this phenomenon - he was too expensive, was less productive, and produced lower quality products then the Japanese worker. The opening of factories in the U.S. managed by Japanese with American workers proved this claim to be wrong, as their products were competitive and often even better then the original Japanese products. It also indicated that the Japanese production planning and control methods are the primary reason …

A 3-D Tactile Sensor With Digital Output, Sin-Shou Cho

Theses

This thesis details the design of a new tactile sensor for general-purpose robot manipulators. Such manipulators, designed to be functionally equivalent to the human hand, will require sensor arrays that fulfill several requirements : (1) many sensor elements to minimize tactile imaging time, (2) close spacing of small sensing elements for fine spatial discrimination, (3) ability to be molded to a convex fingertip surface for taction on concave surfaces, (4) tolerance to over-scale forces without damage. In addition to the above, which are considered requirements, several other characteristics are desirable. Foremost is the ability to sense shear forces, which provide …

Effective Techniques For Selection Of Information Systems Personnel, Robert Reginald Downs

Theses

Although major developments in information systems have occurred within the last two decades, staffing to manage these systems has received limited attention. Staffing information systems personnel is investigated in this study to develop effective techniques that can be used in the selection process.

Recent literature on selection and staffing has been reviewed to establish methods that can be used to identify qualified candidates. Technological developments and the resulting effects upon organizational operations are examined, revealing the transition in the information systems management function as well as the effects upon the role of these personnel. The qualifications that are associated with …

A Methodology For Evaluating Prospective Investments In Flexible Automation, Werner A. Eikenbusch

Theses

The flexible automation of production systems (FA) provides the technology necessary for competitive success. However, the use of traditional budgeting methods has proved unsatisfactory when evaluating this type of investment, primarily because of the inadequate consideration being given to the resultant strategic benefits.

A methodology considered suitable for evaluating FA investments is proposed together with an illustrative application. To determine its industrial usefulness, manufacturing managers of North American and West German companies were surveyed both via interviews and via questionnaires. Their response confirms the merit of the procedure, despite the differences in competitive foci found between the American and the …

Effects Of Peripheral And Microwave-Core Heating On Survival In Hemorrhagic Shock In Rats, Ashraf Sabry El-Assuooty

Theses

In a model of rats resuscitated from hemorrhagic shock,where 11 of 12 animals were alive up to 4 hours after shock, there was an average drop of 10°C in core body temperature. Survival and morbidity was much impaired when the shocked animals were externally heated with an infrared lamp to maintain a core body temperature of 35°C. Since the increased intrashock mortality is possibly due to the circulatory changes induced by peripheral heating, an attempt was made to determine the effects of heating the animal at its core. Twelve rats were shocked in the same fashion, however the body core …

Stepping Motor Control And Position Monitoring, Pei-Kuan Feng

Theses

Stepping motors provide precise digital control of speed, without speed detector feedback. A stepping motor can produce a large torque for a relatively small displacement, without a shaft-position sensor or special compensation. This provides accurate control of motor position. This thesis describes the development of stepping motor torque characteristics and the different approaches stepping motor phase current waveform detection. It is shown that one of the most useful indicators of rotor position is the initial rate of current rise. The Hybrid, Permanent-magnet and Variable-reluctance step motors have been applied in the drive circuits. The open-loop control circuits are implemented to …

The Tapered Dielectric Rod-Conical Antenna, Nicholas I. Georghiades

Theses

The problem of the linearly tapered dielectric rod/conical antenna, excited by the HEI1 hybrid mode in a metallic circular waveguide , is rigorously studied. A theoretical model, and numerical investigation for the radiation characteristics of such an antenna are presented. The model is based on the combination of classical analysis of the Electromagnetic Fields within the dielectric rod, Local Mode Theory, and the Equivalence Principle for the determination of equivalent current distributions.

The far-zone radiation field is considered to be the summation of the fields produced by two radiative components in the dielectric rod/conical structure: The "aperture" of the uniform …