Digital Commons Network^™

A New Mathematical Model For Nephron Macromolecular Selectivity, John Anthony Domiter

Theses

A mathematical model describing the displayed selectivity of the kidney nephron to macromolecules of varying particle size is presented. Diffusion and electrical forces are considered to be the sole mechanisms of transfer. The mass transfer principles responsible for selectivity are considered to occur within the capillary structure, and not within the membrane wall. A charge is assumed to be characteristic of the macromolecule and the membrane wall. Models describing both charged and uncharged solutes are developed.

A non-linear least squares technique, developed by Marquardt, is used to curve fit the derived functions to data relating fractional clearances of dextran and …

Block Floating Point Fft Statistical Noise Analysis Programs, Thomas Joseph Kolze

Electrical and Computer Engineering Technical Reports

The subroutines and programs used to perform a statistical noise analysis of the Block Floating Point FFT (BFPFFT) are briefly outlined and their listings are presented. Explanation of the required input parameters and the resulting output should make the program easy to use.

Support routines and techniques, including a useful plot subroutine, are also described.

Spectral Signature Studies For Application In Deer Census Using Remote Sensing Techniques, Maran C. Pate

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was performed to determine the spectral signatures of deer and their natural background elements for censusing purposes. Consideration was given to atmospheric transmittance, acceptable flying weather, and terrain. Possible spectral bands between 0.3 and 14.0 μm were obtained (over a pathlength of 1500 feet at an altitude of 5000 feet) based upon atmospheric transmittance using the LOWTRAN 3B computer program. They are: 0.30 - 1.33, 1.49 - 1.79, 2.00 - 2.50, 3.00 - 3.16, 3.38 - 4.10, 4.59 - 5.05, and 8.00 - 13.33 μm, for transmittance greater than 75%. Weather conditions are favorable for flying and taking …

Transformation Of Fresnel’S Interface Reflection And Transmission Coefficients Between Normal And Oblique Incidence, R. M.A. Azzam

Electrical Engineering Faculty Publications

If w denotes an interface Fresnel reflection or transmission coefficient for s- or p-polarized light at an oblique angle of incidence ø, and z denotes the same coefficient at normal incidence, we find that w is an analytic function of z, w = ƒ(z), that depends on ø but not on the specific optical properties of the two media on both sides of the interface. All four functions that correspond to the four distinct Fresnel coefficients and their inverses are determined. We single out for detailed examination, as an example, the relationship between the reflection of s -polarized light at …

The University, Electrical Engineering And Space Travel, Doran Baker

Faculty Honor Lectures

In this paper, my purpose is three-fold: First, to tell some of the story of the development of the Engineering College at Utah State University; second, to present selected concepts and applications in the evolution of electrical engineering; third, to relate these concepts and developments to our space venture and to the twenty-first century_ My perspective is that of a school teacher, engineer, scientist and historian; superimposed upon this is my imbedment in the system as an administrator of teachers and researchers. I intend to strike a balance between generality and depth, between technology and philosophy, and between perception and …

Reflection Of An Electromagnetic Plane Wave With 0 Or Π Phase Shift At The Surface Of An Absorbing Medium, R. M.A. Azzam

Electrical Engineering Faculty Publications

An electromagnetic plane wave incident obliquely from a transparent medium onto the surface of an absorbing medium can be reflected with 0 or π phase shift if (i) the wave is p (TM) polarized, and (ii) the complex relative dielectric function ε is such that 0 ≤|ε| ²/2Re(ε) ≤ 1. Furthermore, the locus of ε such that the reflection coefficient for the p polarization is real at the same angle of incidence, is a circle, and that of ε^½ (the complex relative refractive index) is Bernoulli’s lemniscate.

Scattering Of Focused Beams By Tenuous Particles, S. Colak, Cavour W. Yeh, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

This paper deals with the problem of the scattering of focused laser beams by tenuous particles using an iterative technique. The results are shown to be accurate provided that (a) the polarizability of the particle medium is small and (b) the phase shift of the central ray is less than 2. It was found that when the size of the incident beam waist is close to that of the scatterer, the scattered field deviates significantly from that for the incident plane wave case. Specific examples are given.

Transform Domain Motion Estimation, J. A. Stuller, A. N. Netravali

Electrical and Computer Engineering Faculty Research & Creative Works

This Paper Introduces an Algorithm for Estimating the Displacement of Moving Objects in a Television Scene from Spatial Transform Coefficients of Successive Frames. the Algorithm Works Recursively in Such a Way that the Displacement Estimates Are Updated from Coefficient to Coefficient. a Promising Application of This Algorithm is in Motion‐compensated Interframe Hybrid Transform‐dpcm Image Coding. We Give a Statistical Analysis of the Transform Domain Displacement Estimation Algorithm and Prove its Convergence under Certain Realistic Conditions. an Analytical Derivation is Presented that Gives Sufficient Conditions for the Rate of Convergence of the Algorithm to Be Independent of the Transform Type. This …

An Adaptive Intraframe Dpcm Codec Based Upon Nonstationary Image Model, N. F. Maxemchuk, J. A. Stuller

Electrical and Computer Engineering Faculty Research & Creative Works

This Paper Introduces a Nonstationary Model for Images and Develops an Adaptive Intrafield Dpcm Codec based Upon the Model. the Codec Attempts to Minimize the Mean‐square Coding Error at Each Sample Point in the Picture. the Quantizer in the Resulting Adaptive Codec is Found to Be Similar to that Previously Obtained from Visual Masking Considerations. Comparative Simulation Results using 256 X 256 Pixel Rasters Are Given for Two‐ and Three‐bit/pixel Versions of the Adaptive Codec, the Three‐bit/pixel Graham Codec, and Three‐bit/pixel Previous Element Dpcm. © 1979 the Bell System Technical Journal

Stable Equilibrium Statistical States For Spheromaks, George Vahala, Linda L. Vahala

Electrical & Computer Engineering Faculty Publications

Incompressible nondissipative magnetohydrodynamic turbulence is treated for spherical systems. From the absolute equilibrium expectation values of the fields one can investigate those initially quiescent states for which no large mean square velocity will develop. This stable state is force-free and gives rise to the Hill vortex structure for the magnetic flux surfaces.

Performance Theorems For The Resource Scheduling Functions Of A Multiprocessing System, George Arthur Nicol

Dissertations and Theses

In this dissertation, a multiprocess scheduling model is developed and a set of performance theorems is constructed for the set of scheduling functions associated with the model. Each theorem describes the conditions under which a scheduling function exhibits a particular type of performance.

Toward More Meaningful Laboratory Experiences In Digital Signal Processing And Digital Control, Rodger E. Ziemer, D. Ronald Fannin, Paul D. Stigall

Electrical and Computer Engineering Faculty Research & Creative Works

Digital Signal Processing and Digital Control Are of Utmost Importance for Electrical Engineering Students, for They Are Present in Many Aspects of Today's Technical World. Complex Topics Like These Should Not Be Introduced into a Curriculum as a Crash Program but Taken as Steps in an Evolutionary Process. a Successful Example of This Evolutionary Process is Well Underway at the University of Missouri-Rolla. Copyright © 1979 by the Institute of Electrical and Electronics Engineers, Inc.

Principal Angle, Principal Azimuth, And Principal-Angle Ellipsometry Of Film-Substrate Systems, R. M.A. Azzam, A.-R. M. Zaghloul

Electrical Engineering Faculty Publications

When the film thickness is considered as a parameter, a system composed of a transparent film on an absorbing substrate (in a transparent ambient) is characterized by a range of principal angle ø¯_min ≤ ø¯ ≤ ø¯_max over which the associated principal azimuth ψ¯ varies between 0° and 90° (i.e., 0° ≤ ψ¯ ≤ 90°) and the reflection phase difference Δ assumes either one of the two values: +π/2 or −π/2. We determine the principal angle ø¯(d) and principal azimuth ψ¯(d) as functions of film thickness d for the vacuum-SiO₂-Si system at …

Propagation Of Partially Polarized Light Through Anisotropic Media With Or Without Depolarization: A Differential 4 × 4 Matrix Calculus, R. M.A. Azzam

Electrical Engineering Faculty Publications

We extend the scope of the Mueller calculus to parallel that established by Jones for his calculus. We find that the Stokes vector S of a light beam that propagates through a linear depolarizing anisotropic medium obeys the first-order linear differential equation dS/dz = mS, where z is the distance traveled along the direction of propagation and m is a 4 × 4 real matrix that summarizes the optical properties of the medium which influence the Stokes vector. We determine the differential matrix m for eight basic types of optical behavior, find its form for the most general anisotropic nondepolarizing …

Consequences Of Light Reflection At The Interface Between Two Transparent Media Such That The Angle Of Refraction Is 45°, R. M.A. Azzam

Electrical Engineering Faculty Publications

The reflection of light at the interface between two transparent, homogeneous and optically isotropic media such that the angle of refraction is 45° has the following interesting consequences: (i) the interface relfectivity for the parallel (p) polarization is the square of that for the perpendicular (s) polarization; (ii) the angular deviation of the propagation direction upon refraction is equal to the polarization (or ellipsometric) angle ψ and (iii) the complex reflection coefficient for the ppolarization is stationary, in both magnitude and phase, with respect to small charges of the (refractive and/or absorptive) optical properties of …

Generation For Maximum System Efficiency, Charles A. Gross

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper presents a method for solving for the generation combination that supplies a specific load demand at maximum efficiency in a multigenerator power system. The method accounts for transmission losses using the B constant approach and generating losses using heat rate data. Results are presented for an example test system.

Commercially Available Vacuum Tube Solar Collectors, Stanley J. Ring

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Efficiencies on the order of 50 percent with high differential temperature (150° C) have been advertised with the current distribution of commercially available evacuated tube collectors. Product specifications and, where possible, experimental data have been gathered and presented. The paper also develops a mathematical model for evaluation of these collectors. Results conclude that, although performance is high, collector expense limits the cost effectiveness to necessary high-temperature, high-volume applications. These include both residential cooling and industrial processing.

An Analysis Of Investments In Residential Energy Conservation In Southeast Missouri, Ralph Gunderson

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This study examines the economic feasibility of residential solar heating. Climatic and economic variables used in this report represent those of Cape Girardeau, Missouri. An annual cost model is used to determine the conditions under which solar heating achieves a reduced annual cost of heating relative to gas and electric heating systems.

An Analysis Of Solar Heating Costs In Arkansas Broiler Houses, Ralph Gunderson, J. Martin Redfern

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This study is based on the computer simulation model of a solar heated broiler house in four locations in Arkansas. This simulation model estimated the annual energy savings in each broiler house due to the installation of a solar heating system. This paper uses present value analysis to estimate the life cycle costs of heating conventional and solar heated broiler houses in the state of Arkansas. From these calculations, the number of years required to achieve a break-even cost of heating is estimated.

Fuzzy Probability And Probabilistic Processes, Abraham Kandel

Electrical and Computer Engineering ETDs

In this dissertation, contributions to fuzzy probability and to differential equations with fuzzy parameters are made.

After an introductory chapter, a review of fuzzy sets and fuzzy algebra is given in Chapter 2. The main new results of the dissertation are contained in Chapter 3.

In Chapter 3, Zadeh's definition of the probability of a "fuzzy event" and "the event" and "the average value of a fuzzy function" are extended into the time domain. It is then shown that not only grades of membership, but also probabilistic processes with notions of fuzziness contained, can be defined which obey ordinary, matric, …

Simulation Of Mechanical Rotation By Optical Rotation: Application To The Design Of A New Fourier Photopolarimeter, R. M.A. Azzam

Electrical Engineering Faculty Publications

The mechanical rotation of an optical element around the axis of a beam of polarized light can be easily simulated by using the phenomenon of optical rotation. Because optical rotation can be magnetically or electrically induced, virtually any kind of mechanical rotation can be mimicked. This interesting principle is applied to the design of a new Fourier photopolarimeter that uses an oscillating-azimuth retarder (OAR). The OAR consists of a quarter-wave plate surrounded by two ac-excited Faraday cells that produce equal and opposite sinusoidal optical rotations. Analysis of the operation of this polarimeter of no moving parts proves its ability to …

Generalized Ellipsometry Based On Azimuth Measurements Alone, R. M.A. Azzam

Electrical Engineering Faculty Publications

We investigate the azimuth response function, θ_o = f(θ_i), of a linear nondepolarizing optical system S, whereθ_i and θ_o, are the azimuths (orientations) of the generally elliptic vibrations of totally polarized light at the input and output of S. We find that the azimuth response function depends on five of the six parameters that specify the normalized circular Jones matrix of the optical system. Thus the entire polarization response of an optical system can be nearly completely reconstructed from its azimuth response alone. Five input-output azimuth measurements (θ_ik, θ_ok), k …

The National Solar Heating And Cooling Information Center, Jeremy A. Lifsey, Sanford Zane Meschkow

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The Center is an information service funded by the U.S. Department of Housing and Urban Development and the U.S. Department of Energy as part of a program to foster the use of solar energy in domestic hot water systems and the heating and cooling of buildings. The Center answers questions by mail and over toll-free hot lines, operates a mobile exhibit van and several exhibits that appear at conferences and trade shows, and distributes HUD and DOE publications on solar energy. Users can request lists of addresses of solar design and construction professionals, manufacturers, distributors, banks that have given solar …

5th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This volume is a collection of refereed papers presented at the Fifth Annual UMR-DNR Conference on Energy held at the University of Missouri--Rolla on the dates of October 10 - 12, 1978.

Guided by the President's goal of energy independence by 1980, the UMR-DNR Conference on Energy organized in 1974 with the purpose of providing social scientists, scientists and engineers a means for rapid communication of their most recent research results in the field of energy and to offer solutions to the energy related problems of local government, business, industry and the general public. Since that time, there has been …

Application Analysis Of A Cellular Geographic Information System, Michael Edward Wehde

Electronic Theses and Dissertations

AREAS, the Area REsource Analysis System, was developed by the author as an analytical tool for resource data manipulation in a spatial context. The data base and processing software design factors relevant to economical application are reviewed. The investigation seeks to define a procedure for selection and justification of the grid cell size used to quantify the spatial domain. The performance of a cellular information system is measured in terms of mapping and inventory accuracy. These measures of performance are evaluated for various cellularizations of a single map. The interboundary distance distribution is justified as the only unique characterization of …

Algorithms For The Solution Of Systems Of Coupled Second-Order Ordinary Differential Equations, Brendan O'Shea

Articles

Several step-by-step methods for the computer solution systems of coupled second-order ordinary differential equations, are examined from the point of view of efficiency “time-wise” and “storage-wise”. Particular reference is made to a system arising in the close-coupling approximation of the Schroedinger equation. The stability of the solution is also considered.

Data Compression In Microprocessor-Based Data Acquisition Systems, Paul D. Stigall, Philip Panagos

Electrical and Computer Engineering Faculty Research & Creative Works

A First-Order Predictor Routine and an Encoding Routine Were Implemented on an Intel-8080-Based Microprocessor System to Determine their Ability to Compress Seismic Data. the Predictor Routine Obtained a Maximum Compression Ratio of 2.33. It Appears that Higher Order Predictors Offer No Significant Advantage over the First-Order Predictor in Compressing Seismic Data. the Encoder Routine Obtained a Larger Compression Ratio of 3.94. the Accuracy of Reconstructed Seismic Traces is Bounded by a Maximum Average Error Per Point. for the Predictor, the Maximum Average Error Per Point is Shown to Be Equal to the Specified User Tolerance. for the Encoder, It is …

Adaptive Control Of A Cloud Simulation Chamber Expansion System, Katiya Greigarn

Doctoral Dissertations

"This dissertation describes the design and construction of a closed-loop computer controlled expansion system for a cloud simulation chamber. The chamber is used to simulate atmospheric phenomena for the study of microphysical processes. In order to accomplish this, the sample gas inside the chamber must be expanded adiabatically. This means the wall temperature and the gas temperature must be made to agree as closely as possible. The wall is cooled by thermoelectric modules, and the temperature is controlled by analog controllers. The gas is cooled by the adiabatic expansion, and the corresponding pressure is controlled by a laboratory minicomputer, a …

Light Extinction In Polydisperse Particulate Systems, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

Analytic methods are developed for determining the attenuation characteristics of light beams propagating through ensembles of scattering particles including those with complex index of refraction. The methods are applicable to a wide range of practical particulate systems, and the results are expressed explicitly in terms of elementary functions. Propagation through fog and clouds is considered as an example, and it is found that absorption by the liquid lengths. water in such ensembles affects strongly the extinction for ir wave-lengths

Reliability And Surface Degradation Aspects Of Synthetic Insulator Materials For Hv Application, Satyapal S. Bhatia

Dissertations

This study is a theoretical and experimental investigation on the state of the art of synthetic insulators for outdoor high voltage transmission systems.

The surface of a polymeric material is known to be degraded by, among other things, environmental stresses such as UV, air pollutants, etc. The reliability of an insulator material is governed by the surface and other characteristics that do not drift much as a function of stresses and time.

The surface characteristics of various synthetic materials, when these materials were exposed to UV radiation in the laboratory were studied. The changes in the surface properties of these …