Digital Commons Network^™

Study And Characterization Of Ingaas Photodiode And Photodiode Arrays, Krishna R. Linga

Theses

This thesis describes the InGaAs p-i-n photodiodes, photodiode arrays and their characterization. A work station was also built for the opto-electrical characterization. The main feature of the In,_zGa_iAs photodiodes with x > 0.53 is its response to higher wavelengths than the standard lattice-matched photodiodes. An In_xGa_1-xAs photodiode with x = 0.88 respond to 2.6 μm wavelength. The application of these photodiodes is forlIber optic communications, spectroscopy and instrumentation. A complete characterization and analysis of the In_0.88Ga_0.12As photodiodes is presented. Dark current analysis, which is a critical parameter in photodiodes, …

Holographic Photo-Induced Electrochemical Etching Of Diffraction Grating In N-Inp, Pei-Chen Pien

Theses

Maskless laser-induced etching and plating is a novel technology for etching a three dimensional profile on semiconductor wafers. Using this technique, we may avoid the contaminating mask stage and achieve in-situ monitoring of the on-going process. In this thesis, we have presented findings on light diffraction from an etched pattern in a thin-film cell configuration. We suggest that the etched pattern develops mostly linearly in time with this arrangement, although indirect monitoring of the reaction process such as by light diffraction, should be carefully interpreted. In-situ light diffraction monitoring appear as if light was scattered from an etched pattern developed …

Effective Disciplinary Process In Management, Ying-Lung Teng

Theses

The application of discipline is the punitive behavior by the employer to suppress the employee's undesired behavior in the work place. However, there are many considerations have to be concerned when applied discipline.

An organization has to support the supervisor when applying discipline because it gives the supervisor the great power in dealing with problem workers. Organizational policy has to specify the degree of discipline and timing of discipline in order to make the supervisor and the employee have an idea about discipline.

The employee becomes satisfied with supervision when the supervisor uses good leadership skills to manage. In order …

Biodegradation Of Hexachlorocyclohexane In Sand And Wastewater Using Immobilized Phanerochaete Chrysosporum, Ajaykumar C. Gami

Theses

The present study was carried out in order to assess the ability of Phanerochaete chysosporium to degrade lindane (hexachlorocyclohexane) in sand as well as in water. It was found that the fungus is immobilized on saw dust, it is able to degrade lindane in a packed-bed reactor configuration, with a first-order rate constant of 0.00066min^-1. The fungus is also able to degrade lindane in sand. As with the packed-bed reactor, a supplemental carbon source (glucose) is required. In this study it was found that a glucose concentration of 20 gm/kg of sand, and 40% w/w moisture content, give …

Preparation And Testing Of Novel Blocked Isocyanate Dental Adhesives Based Upon Hydroxyhexylmethacrylate, Yunwen Ye

Theses

A new kind of dental adhesive, O-Chlorophenol-TDI-HEMA-Pentaerythritol (TDI), was studied under long term conditions. The test was done in human third molar teeth which had been extracted 7 days to 6 months. Both citric acid and non citric acid pre-treatments were used on dentin surfaces. Based on Causton's[9] mineralizing solution pre-treatment method, we have used 3 kinds of mineralizing solutions, ITS, 0.5% CaCl2, NaF, as pre-treatment solutions. There were no significant differences between the citric acid and non citric acid pre-treatment. The ITS mineralizing solution pre-treatment caused a large increase in bond strength. The average bond strength of 1791 psi …

The Legal Status Of Strikers And Replacement Workers, Chun-Shu Su

Theses

On labor-management dispute, each party to the negotiation seeks to protect its economic interests by extracting concession from the other. Both union and management back up their demands with the threat of pressure tactics which would inflict economic harm upon the other party. If the negotiations reach an impasse, a labor union's most powerful weapon at the bargaining table is the credible threat of a strike, a protected right under the National Labor Relations Act. On the other hand, the management may use lockouts or hire new employees to replace those striking workers to force concessions.

Hiring permanent replacements has …

Manufacturing Automation Protocol Implementation Guide, Richard H. Infantino

Theses

The purpose of this thesis is to provide a starting point for individuals seeking information on the Manufacturing Automation Protocol (MAP) Specification. This thesis is designed to be as comprehensive as possible, yet, still basic enough to be understood by an individual who may not be familiar with computers and networks, and how they function. The intent is to progress gradually from basic networking concepts and characteristics, to defining network requirements, and finally to network design and installation. At the conclusion of the paper is an Organized Method Approach to MAP network design and installation that could serve as a …

Digital Correlators For Spread Spectrum Communications, Raymond B. Chadwick

Theses

The design and application, in spread spectrum communications, of a digital correlator implemented in a Xilinx Field Programmable Gate Array is presented. Spread spectrum communications, correlators and Xilinx Field Programmable Gate Arrays are first introduced. A digital correlator is designed and implemented in a Xilinx Field Programmable Gate Array. Cascading correlators to increase the correlation dimensions is next explored. The maximum operating frequency of the digital correlator is calculated and simulated to be 40 Mhz; a significant speed improvement over commercially available correlators such as those from TRW.

A Proposed Model For Comparing The Performance Of Neural Networks And Statistical Approaches In Predicting Project Profits Of An Asphalt Paving Company, Josephine Giaimo

Theses

It is currently assumed that the performance of a model for predicting project profits of an asphalt paving company varies with an unknown number of parameters. An earlier study indicates that the parameters are not well understood (Berry, 1990). A search of the literature suggests that the available models usually are described by those who develop and use them as universally reliable and valid tools for solving complex problem (Allman, 1989; Bumke, 1988; Clark, 1988; Cohen & Howe, 1988; Fillon, 1989; Kling, 1990; Lawrence, Petterson, & Hartzberg, 1990; Marose, 1990; Pollak, 1988; Reynolds, 1988; Sullivan & Reeve, 1988; Thurber, 1988). …

Microwave Treatment Of Hazardous Wastes : Benchscale And Pilot Plant Studies, Yaoli He

Theses

Microwave treatment of hazardous wastes was studied on both bench-scale and pilot plant scales. Bench-scale studies were carried out on two processes: steam distillation to effect the removal of volatile and semi-volatile organics from substrata like soil; immobilization of heavy metals like chromium in soil.

The pilot plant work involved the start-up of a newly-installed facility and the determination of the efficiency of energy transfer from the power system to a load.

It was found that microwave generated steam within the substratum effects the distillation of naphthalene in both sandy soil and clay soil, respectively; 95% removal is effected within …

Design And Development Of Ccd Camera For Document Scanner Using Optical Fiber Bundle, Aniruddha P. Joshi

Theses

A CCD camera for the gray scale document line scanner has been designed and developed at Photon Imaging Corp. The scanner consists of a revolutionary optical fiber bundle, CCD camera, and control electronics. The key concept resides in the fiber-optic bundle. At one end it has a linear array of equally spaced light guides. These terminate at the opposite end in a square array with a polished surface for viewing by a camera. The fan-out from linear to square end is not done with attention to ordering, so the bundle may be relatively inexpensive. Reordering is done electronically using an …

Optimization On Isdn In Multihop Radio Networks Through Genetic Algorithm, Prashant H. Pahade

Theses

Integrated service of voice and data on a single network has received considerable attention recently. Various techniques have been proposed and analysed for multiplexing voice and data over a large bandwidth channel. Efficient channel allocation for voice and data on multihop radio network is what we are most concerned about. In this paper, we address the problem of determining optimal access policies for a tandem ISDN network by using Genetic Algorithm. Computer Simulation shows that this leads to the decision which is beneficial to the services of both voice and data in the network.

A Petri Net Simulation Tool, Ashish H. Shukla

Theses

A user friendly and highly interactive graphical tool for drawing, editing and simulating translated Petri Net models is developed. This SunView based tool allows simulation to be carried out in the 'step' and 'run' modes. In the 'run' mode it produces a log file of the simulation run which consists of: a) total number of tokens in the net; b) names of the transitions that fired; and c) the system state reached after each step's execution. The tool offers a new solution to the problem of modeling concurrent and interlocked systems, such as computer systems, modular software, flexible manufacturing systems …

Cascading Of Ever Adaptive Variation Of Lzw Algorithm With Arithmetic Coding Method, Ramesh Vishwanatham, Ketan Tejani

Theses

Two known compression algorithms appropriate for communication are LZW and the Arithmetic Coding method. Both algorithms are adaptive and require no extra communication from the encoder to the decoder. We have considered a variation of LZW algorithm known as Online version which result in better compression. Here we present a scheme to cascade Online LZW with Arithmetic algorithms into an Ever Adaptive data compression algorithm which achieves higher compression ratio and is appropriate for communication.

Performance Evaluation Of Extended Token Ring Network Under Message Priorities, Prakash B. Kukadia

Theses

Local Area Networks carrying multiple priority classes of messages have received considerable attention recently. A simulation model of a symmetric, priority based network, consisting of token ring networks interconnected by a bridge is implemented. Messages are divided into two priority classes, namely, high priority classes and low priority classes. Two different approaches are considered for transmission of high priority messages. [1] Each station transmits the same amount of high priority traffic when the token reaches the station, regardless of the time elapsed from previous token arrival. [2] The amount of high priority traffic transmitted by each station may vary at …

Collage And Installations: Between The Sky And The Earth, Misun Hong

Theses

My work comes from my feelings about abortion. It is a difficult situation for all involved. It is a painful decision for a woman to make, one which not only affects her life but also that of a fetus and other people close to her. I wanted to inform others about the chaotic and complicated sadness that abortion brings to one experiencing it. A woman may ask, "Why do I have to make this decision? I have always tried to be a good person. Why me? Why woman? Why not men? Who's fault is this? I feel trapped, but in …

American Dreams, Mark Lyons

Theses

The intention of this thesis is to investigate metaphorical narratives about experiences in American life. The commentaries depict cultural ironies and satirical imagery of everyday activity. The vessel is used as a stage for these metaphors. I used various glazes, stains, and atmospheres in firing, multiple techniques in construction, and a collection of common historical and personal imagery in each piece. A narrative environment appeared to be the best mechanism to convey statements in the vessels. This body of work reflects many of the experiences I had as a child. These experiences translate into many of the values our society …

Provocations: Raw Constructs In Mixed Media, Heinrich Klinkon

Theses

None provided.

Aggression And Symbols Of Power, Karen Kuhn

Theses

Weapons are one of the oldest and most significant forms of artifacts, occurring in virtually all human cultures. Weapons and their technology often determine power structures, not only by brute force of arms, but by long standing respect to ritual aggression. In many cultures, weapons have become abstracted and formalized to become symbols of power and authority, as in a ruler 's scepter, which is a glorified war club. Jewelry functions in much the same manner, proclaiming the social status of the wearer, although in the western world, we have lost most of the symbolic meaning of our jewelry; for …

The Use Of Self-Managed Teams In Service Industries, Henry F. De Mena

Theses

Self-managed teams in business and industry are groups of workers assigned to perform a complete function in the operation of their company. ream members, when well-trained and multi-skilled, are flexible enough to rotate between positions as needed and to perform the various tasks which compose the complete function. The teams are autonomous, in that they manage themselves. Team leaders are resource persons, not directors. The organizations in which they are used are flat (managerial-wise) since little middle management is required.

Such teams are not uncommon in manufacturing industries. As yet, however, they are less frequently found in service industries, even …

International Technology Transfer : America Via China, Lijie Dong

Theses

Momentous changes continue to occur in China. The high priorities now accorded economic modernization and improved global relations present a sharp contrast to the years of the Cultural Revolution and earlier. But what happened last year, the June 4 Tiananmen Square massacre, brought about great confusion and uncertainty over China's future course. China may be a constructive trading and strategic partner, or it may choose a more divergent path. U.S. decisions on technology transfer will be an important determinant of which path is followed and the implications for the world.

Optimization Of Bandwidth Allocation In Atm Nets Through Simulated Annealing, Chien-Long Hou

Theses

Optimization of Bandwidth Allocation in ATM network is considered in this thesis. We address the problem of determining optimal bandwidth allocation in such BISDN's that adopt ATM as their basic switching. technique by using Simulated Annealing. Computer simulation shows that this optimal policy leads to the configuration which yields the minimum average packet delay.

An Optically Powered Cmos On-Chip Power Supply, Jaeyong Jeong

Theses

This thesis presents an optically powered CMOS on-chip power supply for CMOS IC applications. There exists a need for specialized chips that are located remotely and are powered by light supplied through fiber-optic cabling. An optically powered CMOS on-chip power supply circuit described in this thesis is composed of three subcircuits; light to voltage converter circuit, clock pulse generator circuit, and voltage multiplier circuit. Each subcircuit has been analyzed and designed, and simmulated using SPICE 2G.5/6 with 3pm CMOS SPICE parameters from the MOSIS. The circuits layout has been done using MAGIC according to the MOSIS scalable CMOS design rules. …

Emergency Preparedness : Disaster Planning For Health Facilities, Narendra R. Patel

Theses

There seems little that can be done to eradicate or even control natural disasters, considering the current state-of-the-art. If nothing can be done to prevent them, we must be prepared to cope with them whenever they do occur.

One possibility for greater assurance that hospital will properly accomplish its post disaster mission is an up-to-date, well-thought-out " Hospital Emergency Preparedness Plan." A well written and rehearsed disaster plan is essential for the proper and timely care of casualties arising from an internal or external disaster.

This thesis attempts to bring together many widely dispersed studies, disaster experiences and principles that …

Simulation And Analysis Of Priority Classes In Extended Token Based Local Area Networks, Bhavinkumar R. Pathak

Theses

Recently, Local Area Networks carrying multiple priority classes of messages have received considerable attention. The IEEE 802.5 token ring standard defines an optional priority scheme to handle different priority classes of messages. A simulation model of symmetric priority based networks, consisting of token ring networks interconnected by a bridge is considered. Messages are divided into two priority classes, namely, high priority traffic and low priority traffic. High priority traffic is guaranteed access on the channel, whereas low priority messages are served when the system determines that no high priority messages are currently waiting. The simulation results are used to evaluate …

Neural Net Classification Of States In Finite State Vector Quantization, Zhigang Zhang

Theses

In this thesis, a new image coding technique based on Neural Network Finite State Vector Quantization(NNFSVQ) is presented. The new design takes advantage of the high interblock spatial correlation of pixels in typical grey-level images, in addition to intrablock correlation already exploited by vector quantization (VQ). Although many FSVQ require large memory space for the storage of the numerous state codebooks, the memory space requirement of NNFSVQ can be reduced by a very large factor (about 10²-10³) to manageable size without impairing image quality. Simulation experiments have shown that by using NNFSVQ the bit rate can …

Implementation Of Parallel Sorting Algorithms On A Transputer Network, Venkatraman U. Calidas

Theses

Many sorting algorithms, such as the bubble sort and the binary tree selection sort, are n-squared algorithms and take O (n2) time to sort n values. These can be easily parallelized; the resulting sorts are called the odd-even transposition sort and the parallel tree selection sort, respectively. These have O(nlogn) time complexity. The quicksort is an O(nlogn) algorithm and it can parallelized to make it an O(logn) algorithm.

A transputer is a microprocessor which has serial links to transmit and receive data from other transputers. The above algorithms are implemented on a network of transputers and the link connections for …

The Interconnection Network Analysis Package, Nadeem Sabbar

Theses

This thesis focuses on the development of the Interconnection Network Analysis Package (INAP), and the use of INAP to analyze minimal permutation networks. The INAP code is written in C language using Turbo C compiler. Although the INAP has been used to analyze the subject networks it is not a dedicated system. It gives the user the freedom to create the permutation network from scratch (1-8 inputs and 1-7 stages), and then to process it for any number of stages.

The INAP made the analysis of five input networks easy and efficient. The networks have been analyzed stage by stage. …

A Quantization Noise Feedback Technique In Pyramid Image Coding, Zhili Lin

Theses

In communication, we frequently encounter the problem about the trans-mission rate and quantization noise. That is, small quantization noise or high fidelity definitely increases transmission rate, or large quantization noise or low fidelity might require low transmission rate. In our research, we developed a quantization noise feedback technique, with which quantization noise can be reduced greatly at a given transmission rate. We applied this technique in pyramid image coding environment. An error analysis in frequency domain was carried out. Error estimation for pyramid image coding with and without quantization noise feedback was made. Finally, plenty of computer simulation confirms our …

Microcomputer-Based Visual Controller And Data Logger System, Xiao-Fang Qi

Theses

This thesis paper describes the firmware design, instead of the hardware logic design, makes the machine vision hardware system economical, intelligent and expandable. It shows the construction and testing of a novel remote low speed machine vision control system, which also has functions as data logger and is capable of auto control. The system has 9 analog input channels available, and more. It also has 4 digital output channels for controlling external devices. This work also implemented a way to transfer the grabbed image to a PC/XT. In the 256 graphics mode of the VGA, 64 B&W gray levels can …