Digital Commons Network^™

Effective Use Of Management Information Systems In Manufacturing, Bhavik Shah

Theses

Information is the catalyst of management and the ingredient that coalesces the managerial functions of planning, organizing, actuating and controlling. The implementation of management information system (MIS) provides the vehicle by which management process can be administered and integrated. Information is at the core of creative thinking, which leads to new ways of improving products, process and services to the invention of new devices and to discovery of new marketable concepts. Thus information for an organization has a dual application for internal operation and external marketing potential.

The organization studied was a small to medium sized batch manufacturer of healthcare …

A Study Of Signal Cancellation Effects In Adaptive Arrays, Cheng-Der Sun

Theses

An adaptive array can automatically place pattern nulls in directions from which undesired signals (interference, jamming, or clutter, etc.) arrive and can also provide gain for a desired signal. The purpose of this study was to study the effects of the adaptive array on the desired signal while suppressing the undesired signal.

This was done by studying the transfer characteristics of the adaptive array between its input and output. In this study, C.W. jammers along with the desired signal were considered and input and output relationship of the adaptive array were determined. Several basic types of adaptive arrays were studied …

The Optimal Design Process : Integrating Creativity And The Axiomatic Approach, John V. P. Tirrell

Theses

This thesis will show that the optimal design process incorporates both creativity and the axiomatic approach. An examination of past and current design methods will substantiate the need for the integration of these components. Creativity is the designer's tool to produce innovative designs which transcend existing design solutions. Creativity is also an integral element of the axiomatic approach to design. In the axiomatic approach, two design axioms are applied to efficiently ascertain the best design solution from the infinite number of choices. Application of the design axioms, theorems, and corollaries streamlines the design process. The integration of creativity and the …

Delay Improvement And Reliability Enhancement In A Cim-Based Factory Network, Vimalkumar Upadhya

Theses

Today, Computer-Integrated Manufacturing (CIM) refers to the integration of computer-controlled factory floor devices with engineering design and plant management computers. In general, there is a need for more efficient factory networks than are currently available. To this end, it is essential to investigate new network architectures and study their performance.

A number of CIM networks are analyzed in this thesis, and a new CIM network architecture is proposed. The throughput and delay characteristics of all these network architectures are derived from their respective simulation models. The results indicate that the proposed CIM network architecture has superior performance characteristics, compared to …

Performance Studies Of Lapped Orthogonal Transforms, Frank E. Wadas

Theses

The comparative performance of several Lapped Orthogonal Transforms(LOTs) [1][2][3][12] is studied in this thesis . Blocking effects of conventional block transforms at low bit rates are reduced with LOT, through basis functions that overlap in adjacent blocks. The block transforms of Discrete Cosine Transform (DCT), Discrete Sine Transform (DST)[4], Discrete Legendre Transform (DLT), and the Modified Hermite Transform (MHT)[16] are extended to LOT in a way that a fast algorithm for nearly optimal LOTs is derived. The Markov and two different exponential correlation models are used as the source models for the derivation of these LOTs. It is shown that …

Computer-Aided Planning For Automatic Assembly Of Printed Circuit Boards, Qin Xiang

Theses

A study of printed circuit board assembly in the context of process planning and optimization of assembly motion is presented. A knowledge-based system is developed utilizing software packages VP-Expert, dBase 3 for the Universal automatic assembly machines. The planning of time-optimal assembly motion falls into the travelling salesman problem whose solution is obtained using a composite algorithm. Branch-and-bound algorithm is also discussed for solving the travelling salesman problem.

Optical Isolation Of Single Board Computer For Use In High Electrical Noise Environments, Meng Xiao

Theses

This thesis describes various electrical noises, noise environments and noise effects for electronic logic circuitry. The optical isolator is introduced and its concept, classification and characteristics are discussed.

Various design considerations are reviewed: input forward current, reverse breakdown protection, threshold, current transfer ratio, isolation voltage, data rate, common mode rejection, CMOS compatibility, isolation resistance, isolation capacitance, temperature effect and cost.

A multi-channel optical isolated input/output interface board for 8052AH BASIC SBC is designed. It includes 16 input channels, 16 output channels, decoder circuit, latching circuit, PC895 interface and input protection circuit. The sample board has been built, tested in the …

Temperature Dependent Current-Voltage Characteristics In Thin Sio2 Films, Jin Zhao

Theses

An analysis of the Fowler-Nordheim tunneling (FNT) theory and its application to temperature dependent current-voltage characteristics, of very thin films of SiO₂ on silicon, is presented. The final results are believed to provide the most complete examination of FN emission theory and predict the breakdown electric field in thin SiO₂ films. The role of the roughness, at the Si-SiO₂ interface, in determining the FNT current and breakdown mechanisms in metal-oxide-semiconductor (MOS) structures are also discussed.

A Code Verification System For Ink Jet Printing, Daniel Liang Hsu

Theses

This paper describes system integration of a code verification system. The system utilizes a feature matching

Non-Parametric Dominant Point Detection Algorithms, Kuo-Wei Huang

Theses

Dominant point detection is one of the most important preprocessing steps for landmark-based shape recognition and point-based motion estimation. Two new methods for detecting dominant points are presented. Both methods do not require any input parameter and the dominant points obtained by these methods remain relatively the same even when the object curve is scaled or rotated.

In the first method, for each boundary point, a support region is assigned to the point based on its local properties. Each point is then smoothed by a Gaussian filter with a width proportional to its determined support region. A significance measure for …

A Theoretical Model For Radio Attenuation Inside Buildings, Kyu-Sung Kim

Theses

Research to expand the capability of indoor, portable, radio frequency links for voice and data transmission is being pursued worldwide. Sophisticated communication systems using digital portable radio telephones have been proposed. To accomplish this goal, it is necessary to ascertain the attenuation of electromagnetic signal propagation inside buildings. Because modeling of the indoor environment at radio frequencies is very complicated, most publications document experimental results. In this study,. a theoretical model is proposed for predicting path loss inside buildings. The theory involves a waveguide model of the indoor environment which permits a rigorous modal solution similar to that developed by …

An Mcs Basic-52 Sbc Using Anything But An 8052ah-Basic, Hyunyeop Lee

Theses

This thesis exploits the ways to develop a new MCS BASIC-52 SBC using anything but an 8052AH-BASIC microcontroller. The 8052AH-BASIC based SBC offers short development time and low system cost; it is advantageous for numerous applications especially in the instrumentation, measurement and process control. However, the 8052AH-BASIC is no longer officially supported by INTEL and could disappear. Also, this SBC is not adequate for applications where power consumption is an important factor because the 8052AH-BASIC, a MOS product, draws a considerable amount of current.

To solve these problems we demonstrate how the 8052AH-BASIC can be replaced by any of a …

Image Data Compression With Neural Networks, Jianjun Li

Theses

Three efficient image coding schemes, based orb neural networks, have been developed in this thesis: (1) Neural network vector quantization (NNVQ). The main advantage of this new technology is that it can accomplish the complex encoding process much faster than the previous algorithms. Its properties are studied and demonstrated by simulations. (2) A adaptive NNVQ for image sequence coding. Simulation experiments have been carried out with 4 x 4 blocks of pixels from an image sequence consisting of 40 frames. At 0.67 bits/pixel, this scheme achieves good image quality suitable for videoconferencing systems; (3) Neural network prediction. This new prediction …

Token Bus Lan Performance : Modeling And Simulation, Ramesh Kurnool

Theses

A simulation model based on CSIM, a process oriented simulated language, to analyze the performance of the Token Bus protocol is developed. Performance measures such as throughput, average delay and maximum delay per packet are presented. System performance is analyzed for different loads, number of stations, network lengths, different physical and logical distribution of the stations with packet length as a parameter. Previous studies were based on the delay-throughput analysis with no discussion on the effect of variation of the logical and physical distribution of the stations on the performance of the model which is done in the present thesis. …

A Suggested Model Program For Cim Education, Sema E. Alptekin

Industrial and Manufacturing Engineering

No abstract provided.

Adaptive Scheduling And Control Using Artificial Neural Networks And Expert Systems For A Hierarchical/Distributed Fms Architecture, Luis Carlos Rabelo, Sema E. Alptekin

Industrial and Manufacturing Engineering

An adaptive expert scheduler was developed that learns by itself and adapts to the dynamic FMS environment. This hybrid system uses a symbiotic architecture composed of expert systems (ESs) and artificial neural networks (ANNs) and provides a learning scheme guided by past experience. The artificial neural networks recognize patterns in the tasks to be solved in order to select the best scheduling rule according to different criteria. The expert systems, on the other hand, drive the inference strategy and interpret the constraints and restrictions imposed by the upper levels of the control hierarchy of the flexible manufacturing system. The level …

Long-Range Planning Cost Model For Support Of Future Space Missions By The Deep Space Network, J. S. Sherif, Donald S. Remer, H. R. Buchanan

All HMC Faculty Publications and Research

A simple model is suggested to do long-range planning cost estimates for Deep Space Network (DSP) support of future space missions. The model estimates total DSN preparation costs and the annual distribution of these costs for long-range budgetary planning. The cost model is based on actual DSN preparation costs from four space missions: Galileo, Voyager (Uranus), Voyager (Neptune), and Magellan. The model was tested against the four projects and gave cost estimates that range from 18 percent above the actual total preparation costs of the projects to 25 percent below. The model was also compared to two other independent projects: …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, May 1990, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A four page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Irish Building Services News

Building Services Engineering

No abstract provided.

Irrigation District Canal Automation - Cardd, Charles M. Burt

BioResource and Agricultural Engineering

The first rule regarding irrigation district canal automation is that there is no single "best" method of automations. The locations of buffer reservoirs, the ability to allow water to spill at the ends of canals, the storage capacity of canal pools, and the topography will also play key roles in deciding if automation is desirable, and what type of automation should be used. These typical engineering considerations must also be coupled with recognition of the limitations and abilities of irrigation district staff regarding maintenance and trouble shooting of sophisticated controls.

Santa Clara Magazine, Volume 32 Number 3, Spring 1990, Santa Clara University

Santa Clara Magazine

10- SERVICE: THE ULTIMATE STRATEGY A restaurant executive reveals his formula for business success: A Satisfied Customer, Guaranteed. By Timothy W. Firnstahl '65

16 - BLENDED FAMILIES By the year 2000, there will be more stepfamilies than any other kind of family. By Peggy Hernandez '78

20 - NORTHERN IRELAND: A REPORTER'S NOTEBOOK The war between the Catholics and the Protestants is 20 years old and there is no peace in sight. By Kevin Kelly '83

24 - THE FUNERAL OF MICHAEL-JO O'MALLEY A Santa Clara Jesuit writes about a unique ritual he witnessed last summer in County Mayo, Ireland. …

Fm 34-54, Battlefield Technical Intelligence, April 1990, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This manual contains a theoretical description of technical intelligence within US forces in the field. It contains a brief historical sketch of the evolution of technical intelligence and a description of national intelligence organizations and an explanation of the relationships between them.

It explains technical intelligence organization, operations, and responsibilities within a US command in the field. It contains extensive examples of documents and forms used in technical intelligence operations, a detailed foreign language recognition guide, an extensive list of abbreviations, and a detailed glossary.

Data Communication Between An Expert System Shell And A Conventional Algorithmic Program With Application To Cam Motion Specification, Paul P. Lin, An-Jen Yang

Mechanical Engineering Faculty Publications

Although more and more expert system shells have begun to provide communication interfaces to conventional procedural languages, the interfaces are basically shell- and language-dependent. This paper presents a simple, shell- and language-independent data communication technique between a shell and a procedural language via a concept analogous to the handshake data transmission used in microprocessors. A control file is used for the action of handshake. The communication interface is between two data files in two different language environments. A program written in a LISP-based expert system shell, OPS 5, and one written in a procedural language, FORTRAN, were …

Nonproportionally Loaded Steel Beam-Columns And Flexibly-Connected Nonsway Frames, Siva Prasad Darbhamulla

Civil & Environmental Engineering Theses & Dissertations

A theoretical study of the inelastic stability of nonproportionally loaded steel beam-columns and flexibly-connected frames is conducted. Specifically, solution techniques are formulated to predict the nonlinear behavior of cross sections, spatial beam-columns, and nonsway plane frames under the combined influence of imperfections, flexible connections, and nonproportional loads. A set of new inelastic slope-deflection equations for imperfect members are derived and their use illustrated through in-depth studies of flexibly-connected portal and two-bay two-story frames. These equations are derived from a system of nonlinear ordinary differential equations. The member studies are carried out using a second-order finite-difference solution to a set of …

A Case Study In The Development Of A Cost Reduction Methodology In The Public Sector, Ross Cooper Haines

Engineering Management & Systems Engineering Theses & Dissertations

Intense fiscal pressures have caused the Department of Defense (DoD) to explore new ways of reducing operating expenses. The primary technique used to achieve this objective is the use of competition - recently for maintenance requirements not previously subjected to competition. One such maintenance requirement is the periodic overhaul of one of the Navy's front line fighter aircraft - the F-14A Tomcat. This case study documents the cost reduction methodology developed by the DoD's incumbent overhaul facility in preparation for competition. The methodology discusses task time estimation, cost center structure, labor rate development and analysis, internal cost transfers as well …

Analysis And Development Of A Switched Capacitor Power Supply, John Richard Hackworth

Electrical & Computer Engineering Theses & Dissertations

The combination of a switched capacitor network and switching power supply techniques can result in a transformer less regulated DC power supply that is small, relatively simple, and efficient. In addition, the output of such a system could be operated over a wide range of common mode voltages. Multiple switched capacitor supplies could be stacked to achieve voltage multiplication.

Although the output of a system of this type is a continuous function, the internal operation must be analyzed in finite time elements. This numerical analysis will be shown in both a mathematical approach and a computer model.

Diagnostics Software For Concurrent Processing Computer Systems, Robert L. Jones Iii

Electrical & Computer Engineering Theses & Dissertations

Diagnostics software for analyzing ATAMM based concurrent processing systems is presented in this thesis. ATAMM (Algorithm to Architecture Mapping Model) is a new model developed by researchers at Old Dominion University and the NASA-Langley Research Center. ATAMM is capable of modeling the execution of large grain algorithms on distributed data flow architectures. Investigating a real or simulated ATAMM based system requires the aid of software tools. The software tool presented in this thesis can evaluate the behavior and performance of an ATAMM based system. The tool graphically portrays algorithm activities and processor activities. The tool's measurement capabilities indicate computing speed, …

Pulsed Laser Annealing Of Gaas Implanted With Se And Si, Andrzej Rys, Yanan Shieh, Alvin Compann, Huade Yao, Ajit Bhat

Department of Electrical and Computer Engineering: Faculty Publications

Carrier activation and mobility were studied by Raman spectroscopy and the Hall effect in pulsed laser annealed samples of GaAs implanted with doses of Si and Se from 2.2. x 10¹² to 6.0 x 10¹⁴ cm^-2. The samples were annealed using a pulsed XeCl excimer laser ( = 308 nm) and a pulsed dye laser (=728 nm) with energy densities from 0.06 to 0.9 J/cm² and pulse durations of about 10 ns. Very high carrier concentrations of 3 x 10¹⁹ and 1.5 x 10¹⁹ cm^-3 were obtained for the best n-type GaAs …

Plan For Continuing Earthquake Mitigation And Recommended Emergency Response Procedures For Western Kentucky, L. John Fleckenstein, David L. Allen, Vince P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. In 1987, the Kentucky Transportation Cabinet commissioned the Kentucky Transportation Center to analyze and assess the possible effects of an earthquake on highway facilities. Since 1987, over 1,000 miles of priority routes have been recommended for the transportation of goods and services after a major earthquake. This report summarizes the mitigation research that has been conducted. This report also discusses a plan for continuing earthquake mitigation in Kentucky through seminars, discusses bridge retrofitting, and makes recommendations for a post earthquake response.

A Systematic Procedure For The Analysis And Design Of Deployable Space Structures, Praveen Kumar

Mechanical & Aerospace Engineering Theses & Dissertations

An integrated graph theory and a symmetry-based approach have been developed for the type synthesis of deployable truss structures. Using this systematic approach, a bay of a deployable structure may be looked upon as being built around an axis or a plane of symmetry, including anti-symmetry. By providing a fictitious joint along this axis, the problem of structural design and analysis can be reduced to the study of one plane or face of the given structure. Each face is considered to be an assemblage of structural links connected by joints which form a closed kinematic chain. The conventional graph representation …