Engineering Commons^™

High Tech Transition And The Organization, Chetan H. Shah

Theses

The future outlook of any corporation depends upon the resourcefulness of those who manage the planning and operating functions of the business. Time and accuracy are two critical criteria in effective managerial reports for decision making. The electronic computer is a welcome addition into the industry. While its applications to payroll, accounting, sales, and inventory have been extensive, computing has nevertheless been criticized. This study concentrates on determining the impact computing has had on the managers and especially on the people working in the organization from clerks to the top level management.

While an investigation of the existing literature was …

Investigation Of The Size Of Gallium Clusters Formed Using A Modified Ion Cluster Beam Source With A Crucible Temperature Of 1250 Degrees C, Sujit M. Shah

Theses

Energy analysis of the ionized gallium clusters was done by retarding field method. The objective of this research was to investigate the possibility of gallium cluster formation during nozzle jet expansion and to estimate the probability of ionization of clusters. The measurements at a crucible temperature of 1250°C corresponding to gallium vapor pressure of 0.23 torr (inside the crucible) showed that no large cluster sizes could be obtained. The relationship between mass deposition rate (atoms/cm2-sec) and cluster size (atoms/cluster) showed that there were two distinct peaks. One with a cluster size of 1 atom/cluster and the other with about 13 …

Reliability Studies On Microcircuit, Salim Shehadeh

Theses

The primary objective of this thesis is to determine and analyze the failure mechanisms of Low Power Schottky microcircuit device (2-Input NAND Gate). Pinpoint the causes, and suggest the precautionary measures that prevent the occurrence of these failures. To achieve this goal, the study went in two directions, theoretical and experimental. The theoretical part is a comprehensive review of the work done on Low Power Schottky 2-Input NAND Gates since 1960 up to date.

The experimental part of the study is a life test ( 1000 hours ) of 2-Input NAND Gates under humidity and high temperature.

For each unit, …

Life Testing Of Solid Dielectric Materials, Muhammad Irfan Soomro

Theses

The main objective of this thesis was to find correlation between the electrical noise generated within the body of the solid dielectric material with the failure (puncture), under simultaneously applied thermal and electrical stresses.

The term 'Corona' is commonly used to describe any partial discharges occurring in voids (defects) in the material. Precisely corona is a flow of electrons and ions which occur in a void in air or other gasses. This event emits acoustic, optical and radio frequency energy, and can be detected by measuring any of these radiations. In the present thesis, Radio Interference Voltage (RIV) technique was …

Method Of Moments Analysis Of Very Thin Wires Using The Mini-Numerical Electromagnetics Code, Douglas F. Stolarz

Theses

The analysis of thin wire antenna systems in the presence of a conducting ground plane is an important engineering problem. This thesis presents an analysis of wire radiators using the method of moments as implemented in the Mini-Numerical Electromagnetics Code (MININEC). Due to singularities in the formulation, MININEC yields inaccurate results for very thin wires. This code was modified by introducing filament currents for very thin wire structures thereby eliminating inaccuracy due to the treatment of singularities.

The modified code was tested on a monopole over a perfect ground, symmetrical and asymmetrical dipoles in free space, and inverted L and …

Wear And Development Of Wear Testing Methodology, Tirumalai S. Suresh

Theses

The existing wear and friction theories, and wear testing methods have been analysed to meet the objective of this study. One of the key factors in the analysis of a wear problem is the computation of wear and friction coefficient for a material, under real operating conditions. A new wear testing methodology has been developed and a wear tester has been designed and assembled. The tests have been performed at constant sliding speed and different applied loads for a Cast-Iron - hardened Steel pair.

Simulation Of Hvac Systems And Library Building Of New Jersey Institute Of Technology Newark, N.J., Muhammad A. Syed

Theses

The HVCASIM⁺ Building Systems and Equipment simulation program package developed at National Bureau of Standards has been used to simulate the building load and HVAC systems of N.J.I.T. library building, This report describes the procedure and strategy adopted to simulate the library building and the HVAC systems.

The library building has been simulated with two different sets of parameters, first with original design data and then with modifications for energy conservation, which ware suggested by the energy management consultants M/s Engineers Incorporated, as a part of the New Jersey Department of Energy School Grant program.

The results of tho …

Probabilistic Technique In Power Flow Analysis, Dun-Ren Tzeng

Theses

This thesis describes and examines a technique which permits the power flow problem in a power system to be analyzed probabilistically. Both the deterministic and the probabilistic power flow theories have been presented. A mathematical model and a program have been developed to carry out the probabilistic power flow calculation. Two power systems and seven different loading cases have been used to test the technique. The results including the sensitivity coefficient matrices, the expected line flows with their variances, and 25 of 176 probability density function curves, have been shown and discussed. An easy way to predict the possible abnormal …

A Cad Tool For Edif Model Generation, Sri Nagesh Valluri

Theses

This thesis describes a new CAD tool designed to create models proposed by Electronic Design Interchange Format steering committee. In its present form the system can generate models for standard SSI and MSI devices. The menu driven window based fillup the form features of the tool allows a novice user to provide structural and timing informations of the device from any manufacture's data book. The software performs online checking of the user data and guides them to generate the correct model.

Implementation Of Xilinx Development System And Xilinx Lca Application, Youcheng Wu

Theses

The Xilinx Application-Specific Integrated Circuit (ASIC) is a large array of programmable logic cells. Creating logic design using the Xilinx ASIC offers ease of implementation, high function density, design flexibility and lower consumption of supply power. The techniques of implementation of system and design with Xilinx CAD/CAM System include system analysis, modification, update, optimal design algorithms and real circuit emulation.

This thesis combines the setup and operation of the complete Xilinx system, and implement Xilinx LCA into 8052AH-BASIC based Single Board Computer and user's menu of real LCA chip evaluation Board. It presents our own design, construction, test and demonstration …

Current Trends In Facilities Planning, Chaochou Yang

Theses

In the past year the costs of computing and computer graphics have come down dramatically. At the same time, the computer graphic system has become easier to use, As a result, computer support has become more costeffective than before.

In this thesis, the writer describes types of systems first, then looks at computer usage. He first defines the technologies of DSS, CAD and MIS, then takes a detailed, step-by-step look at facilities planning and the various ways in which computers are used for support. Well-conceived planning is an important prerequisite to effective computer use. The remainder of the thesis expands …

Xilinx Asic Design For A Single Board Computer, Hong Zhan Ye

Theses

Xilinx Application-Specific IC is a new kind of programmable cell array with high design flexibility and functional density. It not only has excellent circuit-board utilization and low power consumption, but it also offers easy implementation with lower engineering cost and very short production-rampup period.

This thesis provides a complete and specific procedure for implementing Xilinx LCA into a 8052AH-BASIC based single board computer with XACT development system. It verifies all the results from debugging SBC2064 design using both XACT query system and P-SILOS simulator.

The technology of implementing a whole system design with software and hardware fully proves the possibility …

Theoretical Studies Of A Norbornane Mimic Of Acyl-Alpha-Chymotrypsin, Pin-Nan Chen

Theses

Molecular mechanics calculations were used to investigate the structural flexibility of the norbornane mimic which is a model of an acyl-alpha-chymotrypsin intermediate. The Amber molecular mechanics force field was used to perform the conformational analysis.

Comparison of the optimized conformations of different energy has shown the relative structural rigidity of this molecule. Structural superposition of the minimized mimic to the native conformation of chymotrypsin shows that the mimic has a very similar spatial arrangement of its functional groups compared to the catalytic triad of the real enzyme.

Molecular electrostatic potential maps calculated in planes parallel to the average plane containing …

The Degradation Of Trace Pollutants In Wastewater, Christine M. Cheng

Theses

The effect of different treatments on the degradation of chlorinated organic pollutants in wastewater has been studied. The model compound investigated was para-chlorophenol. The different treatments used were ozone, UV irradiation, ultrasound, air flow and pure oxygen.

It is concluded that ozone has the greatest effect, ozone-UV irradiation follows closely behind, and UV irradiation has much less of an effect in degrading the p-chlorophenol.

P-chlorophenol was found to have an immeasureably slow degradation rate when treated with air even at an elevated temperature of 55°C.

The oxygen, at room temperature, showed a degradation of p-chlorophenol which, although small, was much …

A Computer-Aided Design And Manufacturing System For Wiring Boards Production, Shiau Chia-Ming

Theses

Our purpose is to build some SBC-8052-BASIC microcontroller based instrument systems, and this thesis integrate resources from two areas into a powerful CAD/CAM system for this purpose. Since wiring board is the most popular used tool for laboratory development and small-scale manufacturing, a microcomputer-aided design and manufacturing system is developed to improve the whole efficiency from wirelisting and wiring sequences to hardware and software debugging. So anytime a circuit theory design stage is finished, the prototype can be made easily, then tested and redesigned, till last stage producing. Several practical wiring board circuits have been made through this system, it …

A Data Compression System Using Arithmetic Code, Seokrim Choi

Theses

Generally it is difficult to compress data, from statistically unknown sources, with significant compression ratio. To achieve this, the compression scheme should have an ability to gather context information of the source, adaptively. For better compression, it is desirable to separate the context gathering scheme from coding itself. Arithmetic code is very flexible and can accept any kind of context gathering scheme which can generate probabilities. One context gathering algorithm which generates Markov type probability adaptively is studied and implemented in software using Arithmetic code. This scheme performs well and results in compression ratio better than any existing algorithms such …

Developing A Portable Data Terminal Computer System For Field Service Personnel, Frank De Bellis

Theses

This thesis is intended to provide the reader with a background in the development of modern day portable data terminals / computer systems. In order to accomplish this, some background will be provided to familiarize the reader with the evolution of computer systems. This will enable the reader to become familiar with the fast pace at which these computer systems have developed within only the last several years.

This thesis will include a description of the design, development, and implementation of these computer systems. The thesis will include a description of the way the many pieces of such a sophisticated …

Fibrin Glue For Spilt-Thickness Skin Grafts And Microsurgical End-To-End Arterial Anastomoses In Live Rats, Susan Diane Drastal

Theses

Fibrinogen and thrombin were combined to make a "glue" for adherence in microvascular anastomoses and split-thickness autologous skin grafts in rats. The powdered human fibrinogen and bovine thrombin were mixed with sterile water and each applied drop-wise through separate syringes in equal concentrations. A gelatinous clot formed in 10 seconds, and was completely coagulated in 45 seconds. In part I, one-half of the group had their grafts sutured, and one-half had their grafts glued in place.

In part II, microvascular arterial anastomoses were performed. Group I had their arteries reanastomosed using sutures only; group II had their arteries reanastomosed by …

Robotic Simulation Package For Personal Computers, Amitava Jana

Theses

A software package for three dimensional wire frame modeling of an educational robot is developed for personal computers. This package can be used by students as well as robot technicians to study basic principles of robot kinematics. The interactive simulation software supports both the joint-level and world-level motion control, enabling user to understand teach-pendant programming as well as robot level off-line programming. The desired orientation and position of the robot hand can also be specified through a homogeneous transformation matrix, allowing an advanced student to learn the concept of world modeling in the design of robot work cells. To help …

Failure Surface Of A Square And Rectangular Reinforced Concrete Members [Sic] Under Combined Biaxial Bending And Tension, Ravindra M. Khanapure

Theses

This thesis describes the development and use of three dimensional strength interaction diagrams of reinforced concrete sections for different loading conditions. It also gives a comprehensive overview of modes of failure surfaces and provides design aids for members subjected to biaxial bending and axial tension. This is the phenomena which is rather overlooked analytically and graphical predictions are made. The computer program provides a special tool for the analysis and fast interation of combination of loadings and moments.

A Study Of The Dynamics Of Microbial Competition For A Single Resource In A Chemostat Between Reversible Attachment To Solid Surfaces, Pericles Theofilos Lagonikos

Theses

It is known that two microbial populations competing for a single non-renewable resource in a homogeneous environment with time-invariant inputs cannot coexist in a steady state. The case where two microbial populations exhibiting reversible attachment to the walls of a chemostat compete for a single resource is studied theoretically. Because of the cell's attachment to the walls, the environment is no longer homogeneous. The present study considers the case where the attached cells form no more than a monolayer. The Baltzis-Fredrickson model is used to represent the attachment to the walls. In one system the attachment of cells of the …

Geometric And Enthalpic Calculational Study Of Monosubstituted Cyclobutanes ; Attempted Synthesis Of 1,3-Diphenyl-2,2,4,4-Tetrafluorobicyclo [1.1.0] Butane, Jose Luis Reyesgavilan

Theses

The work undertaken in this thesis is in two parts. In the first, the structure and heat of formation of substituted cyclobutanes were studied via the computer program MMII using an IBM PCXT personal computer with a math co-processor chip. Structurally, a trend was seen to be followed in which bulkier substituents were pushed away from any steric interaction with the ring. This was accomplished by having the latter alter its puckering angle, C2C1C4 angle, HCX angle, and to a smaller extent, the bond lengths immediately adjacent to the substituted carbon atom. This results demonstrated that the ring was very …

Graphical Interpretation Of U.S. Tidal Data, Vaheh Shahbazian

Theses

Numerous Shore line operations relating to industry and conservation would benefit from convenient access to continuous tidal predictions. Easy Graphical access to continuous long term predictions of tidal heights at a location of interest will simplify operations that are sensetive to tidal predictions. A specific example, is the implementation of a protective measurements against flooding and destruction of shoreline facilities particularly at times of high tides.

This thesis consists of three things. First, rendering NOAA's data in a form accessable to a PC user. Second, it provides a Basic program for prediction of tides. Third , PC user programming Resourses …

Novel High Resolution Columns For Gas Chromatography, Douglas Kenneth Stout

Theses

A study was conducted to determine if BN would be a reliable solid phase or support for open tubular capillary columns and to develop a technique for the deposition of BN on the column's inner walls. The theoretical plate results for constructed precoated BN columns demonstrated that BN can be employed as solid stationary phase, but evinces low separation characteristics due to the nature of the drawing process. The development of a simple BN precoating process was tested on various diameter capillary columns and found to provide an excellent support for highly polar liquid stationary phases. Capillary columns with a …

Benzene Losses From Aqueous Solutions During Geotechnical Laboratory Testing, Konstadinos Vogiatzis

Theses

This study addressed the problem of using volatile organics in geotechnical laboratory tests. Previous experiments with volatile organics such as benzene and trichloroethylene with soils had shown significant concentration losses during the tests. The purpose of the study was to identify the sources of loss and to quantify the magnitude of loss.

Vapor - liquid equilibrium was used to predict theoretical evaporation losses of benzene from aqueous solutions. Calculations were made for both an infinite volume of air and for a finite volume. Experiments were then performed to verify the theoretical predictions.

Other losses considered were those during solution preparation, …

Weighted Least Square State Estimation In Power System, Jinn-I. Wu

Theses

In this thesis two methods for power system real-time monitoring are presented, programed and tested. Method 1 is not new and method 2 is a modification of method 1. The two methods are comparable in performance and they solve the problem satisfactorily.

These methods are iterative and the problem of choosing a convergence criterion is unexplored yet. This problem has been discussed, guidelines are presented to select an optimal convergence criterion.

The concept of confidence level and techniques for error detection are investigated. programs to detect bad data and to establish a confidence level have been written and some tests …

The Study Of The Response Of Nucleus Ambiguus Neurons To Blood Pressure Changes, Adrienne Zoe

Theses

The purpose of the project is to aid the study of the response of nucleus ambiguus neurons to changes in blood pressure. The sampling runs indicate that there is a correlation between blood pressure and neuron activity for some of the neurons monitored. Some neurons react to blood pressure increases by Increased neural firing rate while others react by decreased neural firing rate. Some neurons do not respond to blood pressure manipulation comprising the non-vagal neurons. A system was developed for the DIN PC to collect electrocardiogram, blood pressure, and neuron activity from a dog, and to perform non-real time …

Feasibility Of Using Canine Olfaction As A Means Of Detecting Hazardous Substances, Stuart David Messur

Theses

Two specific applications for using canine olfaction as a means of detecting hazardous substances have been recognized: detection of residual contamination on hazardous waste cleanup equipment (DECON), and detection of leaking underground gasoline tanks (LUST).

With the DECON project, the dog's ability to detect low emissions of some common hazardous compounds was tested. As a safe and effective training tool for presenting hazardous compounds to the dog, permeation tubes filled with m-xylene or 1,1,1-trichloroethane were constructed and calibrated. Hidden tubes emitting as low as 0.5 µg/min were consistently detected by the dogs. During olfactory field tests, "hot spots" of m-xylene …

Stress Analysis Of A Stepped Shaft With A Keyway, Irfan Hussain Sabir

Theses

A stress concentration case which is encountered in practice more than any other is the shoulder fillet. Shafts, axles, spindles, rotors etc., usually involve, in each case, a number of diameters connected by shoulders with fillet radii and very often it is necessary for a keyway to be near a shoulder. The objective in this study is to analyse the stresses in a shouldered shaft with a keyway subjected to an axial tensile load and to study the dependence of the keyway-end stresses on the distance between the shoulder fillet and the keyway end. This is done by performing a …

Particle Size Distribution In Isothermal Batch Emulsion Polymerization, Bhavin R. Patel

Theses

A detailed modified mathematical model for particle size distribution in isothermal batch emulsion polymerization of Styrene and Vinyl acetate is proposed on the basis of the population balance approach in presence of several kinetic and mass transfer processes. This study is limited to Smith-Ewart's case II, which assumes instantaneous free radical termination within the polymer particles. Radical desor¬ption mechanism from polymer particles is included in the model and the desorption rate is formulated from the diffu¬sion theory which suggests that the rate co-efficient should be inversely proportional to the surface area of polymer particles.

Experimental runs are made using laser …