Digital Commons Network^™

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 …

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 …

On Weakly Coupled Hyperbolic And Parabolic Partial Differential Equations Arising In Chemical Engineering Problems, Zhifeng Zhang

Theses

Many of the mathematical models arising in dynamical chemical processes are systems of weakly coupled hyperbolic and parabolic partial differential equations with constant coefficients. It is shown in this paper that this kind of systems of partial differential equations can be treated using generalizations of Green's functions. The Green's function is completely defined, including all boundary conditions, for systems with nonselfadjoint operators as well as those which are selfadjoint. The Green's functions can be expressed in terms of eigenvalues and eigenfunctions of the operator and the adjoint operator when they can be obtained. We develop a method based on higher …

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 …

The Sunlight Effect On Trace Pollutants In Wastewater, Alan R. Sheu

Theses

In order to study the sunlight effect on the degradation rate of trace pollutants, ortho-cresol was selected to serve as a model compound in our studies. Solution of ortho-cresol alone, methylene blue alone, and the mixture of ortho-cresol and methylene blue were exposed to sunlight for more than four hours and aliquots analyzed with a spectrophotometer in order to follow the changes in absorption. Rate data were obtained for these three cases as a function of pH.

The results indicate that methylene blue does catalyze the degradation of ortho-cresol in the presence of sunlight with lower pH's affording higher reaction …

Time Series Analysis Of Respiration Component In Heart Rate Variability, Anuradha Ramaswamy Iyengar

Theses

Time series signal processing techniques (Fourier based) were applied to analyze the relationship between heart rate and respiration. This analysis takes advantage of the different timing charecteristics of the autonomic nervous system inputs to analyze their influence on the heart rate.

Data from three experiments were analyzed. The first set of data was from helicopter pilots of the US Army. They injected atropine into themselves on certain days. The effect of atropine on the heart rate spectrum and the relationship between heart rate and respiration was studied. It was found that atropine abolishes the respiration peak in the heart rate …

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 …

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 …

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 …

Variational Theory And Applications To Nonlinear Elliptic Equations Involving Critical Sobolev Exponents, Hwei-Ling Wu

Theses

This thesis consists of two parts. In the first part, Chapters I and II, we present some basic critical point theory,for functionals bounded from below on some Banach space and are either weakly lower semicontinuous or satisfy the Palais-Smale compactness condition. Moreover, we also prove some Mountain Pass type theorems of Ambrosetti and Rabinowit for functionals which are neither bounded from below nor above. In the second part, Chapters III - V, we apply these Mountain Pass type results to the problems of the existence of positive solutions for nonlinear elliptic equations of the Δu = u^p + f(x,u) …

Mizer : A Ruled Based Cad Tool For Logic Optimization, Sandip Mukerjee

Theses

This objective of this research was to develop a knowledge based CAD tool, to address the problems of Logic Design. MIZER is an expert system, that accepts functional specifications of a logic circuit and connectivity description of its implementation to generate an optimal design. This information is then used to develop a hazard free circuit that brings about an optimization in area and timing. It stores the newly created design into its knowledge base with the approval of the designer, for future use.

Analysis Of An Inertial Navigation System On A Silicon Wafer, Ashok K. Parida

Theses

This thesis describes a self-contained inertial navigation system for commercial vehicles. It is low cost miniature system employing some of the newest techniques in micromechanical and microelectronic hardware.

The system employes an array of vibrating tuning fork gyros, a number of feedback force-balance accelerometers, and a central processing unit, all fabricated on a silicon wafer using integrated circuit fabrication technology. A miniature platform (size of a golf ball) driven by gearless torque motors is used to provide a quiet environment for the gyros and accelerometers. There are radio links between components that are on and off the platform (eliminating need …

New Jersey Institute Of Technology, Undergraduate Catalog, 1987-1989, New Jersey Institute Of Technology

Course Catalogs

No abstract provided.

Mathematical Modelling Of The Simultaneous Diffusion Of Egta And Caegta And Ca2+ In A Two-Compartment System Representing Skinned Smooth Muscle, Roderick Jon Hausser

Theses

Smooth muscle strips "chemically skinned" with Triton X-100 represent a two-compartment system consisting of the extracellular space (ECS) and the cytosolic space (CS) bounded by the permeabilized plasma membrane. Free [Ca²⁺] in such systems must be controlled with sufficiently high concentrations of Ca-buffers (EGTA). The presence of Ca-buffers, however, will oppose and delay any changes in [Ca²⁺] in both compartments. We have developed a model describing the simultaneous diffusion of Ca 2+ , EGTA and CaEGTA between bath and ECS, and ECS and CS and the chemical reaction between ligand and metal species in each compartment. …

The Design And Fabrication Of Dielectric Waveguides For Use With High Power Carbon Dioxide Lasers At 10.6 Microns, Jong Min Kim

Theses

The feasibility of constructing a feasible transission system to propagate 10.6 microns energy from a CO₂ laser is explored. The system is to be used in a clinical surgical setting to deliver as much as 100 watts of CW power from a surgical CO₂. laser to a surgical target.

The optimal transmission system is a slender flexible cylindrical structure, 1 mm in diameter and 1.5 m long. The structure should be sufficiently flexible to be bent into a 5 to 10 cm radius without a significant increase in the attenuation constant. For clinical applications the system must …

Evaluation Of Numerical Inversion Of Laplace Transformed Solutions, Yu-Chwin Lin

Theses

Here, some linear physical systems are analyzed by using the standard Numerical Laplace Transformation and Inversion method, including undamped and damped systems:

1. Undamped system: A bar clamped at one end and at one end free.

2. Damped system: Viscously damped linear discrete system.

The advantage of the Numerical Laplace Transformation method is that it reduces the inversion of the Laplace transformed solution to numerical integration; it makes the problem much easier to solve. In the present work, we also studied a new Numerical Laplace Transformation Inversion method by Wilcox (App.0 and Ref.l). The merit of this new method is …

Digital Signal Processing Implementing The C Language With Graphics Spectrum Analysis Display, Anuraksa Mahanirananda

Theses

Digital Signal Processing discussed in this thesis is concerned with the transformation of signals or complex wave forms From time domain to frequency domain and vise-versa, implemented on microcomputer systems. The primary principles are: speed of transformation, ease of usage as an application program, capabilities of graphics displaying transformed data (such as power spectrum analysis), storing these data onto record files, and capability of using these data Files and programs with other application programs.

We begin by discussing briefly, the concepts of Fourier theory, Discrete and Fast Fourier Transform, algorithms of Fast Fourier Transform and bit-reversal. Then we implement these …

Performance Of Second Order Delta Modulation System, Reza Aghazadeh Alavi

Theses

The performance of an ordinary delta modulation (DM) system under three types of input signals was investigated. These signals were band limited Gaussian noise, 800 Hz sine wave, and speech signal. The affects of 2nd DM added to the ordinary DM in improving the performance of the system were researched. This is called a Second Order Delta Modulation System. The obtained data showed an increase of about 3dB in the overall Signal to Noise Ratio (SNR) of the system, in the worse case.

Input to the 2nd DM is the band limited error of the first DM. A linear phase …

Reflections On Solid Modeling In Cad/Cam System, Yuh-Hwa Chyr

Theses

In this thesis, we will first study the mathematical fundamental for geometric modeling. It includes modeling space, representation scheme, and various characteristics for solid modeling. Then we discuss how a solid modeling system is integrated into an overall CAD/CAm system. What functions it performs, and what fuctions must be performed with other parts of the CAD/CAM systems. And how data can be transfered between solid modeling system and other CAD/CAM system.

Solid modeling has created a new era in CAD/CAM. A solid model is an unambiguous, three-dimensional, geometric representation of a design. The more design information a model can represent, …

The Use Of Pure Cultures As A Means Of Understanding The Performance Of A Mixed Culture In The Biodegradation Of Phenol, Chirasakdi Varuntanya

Dissertations

In an effort to gain a more fundamental understanding of the performance of mixed microbial cultures in the biodegradation of toxic organic chemicals, studies have been conducted using three phenol degrading species isolated from a municipal treatment plant. The rate of phenol degradation was investigated for each of the three pure phenol degrading species, and various combinations of the three species. A simple competitive model was used to predict the behavior of the mixed cultures by using the pure culture Monod rate constants. The model fit the growth data for total biomass very well, although (as with the pure culture …

Biorhythms And Industrial Injuries, James Vincent Detitta

Theses

The purpose of this study is to determine whether or not a relationship exists between the time of an industrial injury and a specific position on the biorhythm scale known as a critical day.

Ninety-six employees who worked at the E. I. du Pont de Nemours Plant in Parlin, New Jersey served as a test group during 1980. In order to determine if a relationship did exist, the subjects' biorhythmic cycles for 1980 were charted and then their injury performance was monitored during that year to see if the injury date corresponded with a critical day. An additional test was …

Multi-H Continuous Phase Modulation : Its Properties And Analysis, Jyung-Cheng Chen

Theses

Multi-h CPM, a generalization of CPFSK and also one of the so-called Combined Modulation and Coding schemes, is useful in digital communication systems where both the bandwidth and power are constrained. The increased signal processing complexity, which can be viewed as the third communication resource, is used to trade for both power and bandwidth, and to approach the error-free communication promised by Shannon's theorem.

The transmitted multi-h CPM signal carries a coded sequence of continuous phase changes; the possible phase states form a cylindrical trellis in phase and time, in which the modulation indices are reused in a cyclical fashion. …

The Virtual Classroom: Building The Foundations, Computerized Conferencing & Communications Center, Starr Roxanne Hiltz

Computerized Conferencing and Communications Center Reports

This is a report on the first year of a three-year project concerned with the development and assessment of new types of software capabilities designed to support university level courses. A "virtual classroom" or "university without walls" is being created within a computerized conferencing system. During the first year of the project, students in twelve courses at three universities completed part or all of their coursework online. Pre and post-course questionnaires and automatic monitoring of their computer-mediated communications are the main sources of data. Independent variables include the expectations and attributes of the individual students; characteristics of the particular hardware …

Analyze3d, A Structural Analysis Program Employing Membrane And Solid Finite Elements, James Mendham Gathercole

Theses

The purpose of this thesis is to describe the addition of an 8 and 20-node isoparametric brick element to the finite element program ANALYZE, permitting three-dimensional analysis. The reason for the addition is that even though Analyze is a relatively simple program, its simplicity makes it a good educational tool for finite element courses. The added brick element expands the use of the program for educational purposes.

In its original form, Analyze is a finite element package for static structural analysis developed at Wright Patterson Air Force Base. The program consists of four finite elements: (1) bar, (2) membrane triangle, …

The Effect Of Systemic Arterial Pressure On Microvascular Flow And Transcapillary Exchange Of Macromolecules In The Hamster Cheek Pouc, Govind Mohanlal Gawdi

Theses

Microvascular flow velocities and transport of macromolecules were studied in the hamster cheek pouch under control and acute high arterial pressure conditions, with or without topical (local) application of the vasodilating agent, bradykinin. Mean arterial pressures of 130-160% control were attained by intravenous renin infusion. The microcirculation of the cheek pouch was studied using intravital microscopy. Areas with arterioles and venules were recorded on a videotape for later analysis of red cell velocity, using an RBC tracking correlator, and vessel diameter using a video shearing monitor.

In addition, vascular permeability to macromolecules was studied in the hamster cheek pouch vascular …

Investigation Of Water-Binding Properties Of Industrial Sludges Using Thermal Analysis As A Monitoring Tool, Ron Josephson

Theses

As part of a program to develop new and more cost-effective dewatering approaches for industrial hazardous wastes, sludges and synthetic "model" materials were analyzed by thermal methods in an attempt to comprehend their water-binding qualities and differentiate free and bound water. These thermal methods included Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TG), and Differential Scanning Calorimetry (DSC). Industrial sludges and laboratory models were compared using both standard heating techniques and subambient cooling (to -60°C). This latter technique provides direct indication of the amount of free water. This information can be very useful in evaluating and improving dewatering techniques for industrial …

A Theoretical Study Of Pure And Simple Competition Between Two Microbial Species In Configurations Of Two Interconnected Chemostat, Cheng-Ming Kung

Theses

It is known that two microbial populations competing purely and simply for a common substrate cannot coexist in a steady state in an environment which is spatially homogeneous. Hence they cannot coexist in a chemostat something which implies that a mixed culture of two pure and simple competitors cannot be maintained in a single ideal reactor in a steady state. The present study investigates theoretically pure and simple competition between two populations in two interconnected chemostats. Three reactor configurations are considered and analyzed. It is proved that two pure and simple competitors can coexist in a steady state in both …

Fluid Flow And Gas Absorption In An Ejector Venturi Scrubber, Iclal Atay

Dissertations

Empirical models were developed to describe the fluid flow characteristics and gas absorption efficiency of an ejector venturi scrubber. The empirical constants were determined experimentally using stop action photographs of the spray, static pressure measurements, and sulfur dioxide absorption efficiencies.

To take photographs of the spray, a 2 foot high, clear plastic ejector venturi scrubber was used, with a 4 inch diameter gas entrance port. Photographic equipment included a Hasselblad camera, Xenon flash lamp, and Polaroid 667 ASA 3000 film. Exposure duration was about 1 microsecond, resulting in complete stop-action of the spray droplets at liquid rates up to 6 …

Nucleus 1986, New Jersey Institute Of Technology

Yearbooks

This is a digitized, downloadable version of the Newark College of Engineering Nucleus.