Digital Commons Network^™

Rotation-Invariant Synthetic Discriminant Function Filter For Pattern Recognition, Vahid R. Riasati, Partha P. Banerjee, Mustafa A. G. Abushagur, Kenneth B. Howell

Electrical and Computer Engineering Faculty Publications

The ring synthetic discriminant function (RSDF) filter for rotation-invariant response is discussed for pattern recognition. This method uses one half of a slice of the Fourier transform of the object to generate the transfer function of the filter. This is accomplished by rotating the one half of a slice in the Fourier domain through 2π rad about the zero-frequency point of the Fourier plane. This filter has the advantage of always matching at least one half of a slice of the Fourier transform of any rotation of the image. An analytical discussion of the filter construction and correlation results are …

A Study Of Disk Performance Optimization., Richard Scott Gray

Electronic Theses and Dissertations

Response time is one of the most important performance measures associated with a typical multi-user system. Response time, in turn, is bounded by the performance of the input/output (I/O) subsystem. Other than the end user and some external peripherals, the slowest component of the I/O subsystem is the disk drive.

One standard strategy for improving I/O subsystem performance uses high-performance hardware like Small Computer Systems Interface (SCSI) drives to improve overall response time. SCSI hardware, unfortunately, is often too expensive to use in low-end multi-user systems. The low-end multi-user systems commonly use inexpensive Integrated Drive Electronics (IDE) disk drives to …

The Warps Survey. Iii. The Discovery Of An X‐Ray Luminous Galaxy Cluster At Z = 0.833 And The Impact Of X‐Ray Substructure On Cluster Abundance Measurements, H. Ebeling, L. R. Jones, E. Perlman, C. Scharf, D. Horner, G. Wegner

Dartmouth Scholarship

The Wide Angle ROSAT Pointed Survey team reviews the properties and history of the discovery of Cl J0152.7-1357, an X-ray luminous, rich cluster of galaxies at a redshift of z = 0.833. At LX = 8 × 1044h ergs s-1 (0.5-2.0 keV) Cl J0152.7-1357 is the most X-ray luminous cluster known at redshifts z > 0.55. The high X-ray luminosity of the system suggests that massive clusters may begin to form at redshifts considerably greater than unity. This scenario is supported by the high degree of optical and X-ray substructure in Cl J0152.7-1357, which is similarly complex as that …

Designing Neural Networks For The Prediction Of The Drilling Parameters For Kuwait Oil And Gas Fields, Abdulrahman F. Al-Rashidi

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this study a new methodology was developed to predict the drilling parameters using the Artificial Neural Network. Three models were developed to predict bit type, rate of penetration (ROP), and cost-per-foot (cost/ft), respectively.;The prediction of bit type and other drilling parameters from the current available data is an important criterion in selecting the most cost efficient bit. History of bit runs plays an important factor in bit selection and bit design. Based on field data, the selection of bit type can be accomplished by the use of a neural network as an alternative bit selection method.;Three drilling parameters were …

Parental Influences On High School Student Achievement And Goals, Richard K. York

Graduate Theses, Dissertations, and Problem Reports (ETD)

The present study examined parental influences on educational and career goals of high school students. Data on educational and career goals from the Perceived Life Chances Interview were derived from 124 rural adolescents. One hundred of their mothers and 36 of their fathers completed the Inventory of Parental Influence which consists of five subscales of Parental Involvement/Help, Psychological Support, Parental Pressure, Pressure for Intellectual Development, and Time Management/Monitoring. Responses from the Perceived Life Chances Interview were qualitatively analyzed in order to derive categories that reflected the varying responses from participants. These categories served as dependent variables in a series of …

Evaluation Of Lubricants For Cold Forming Of Steels By Double-Cup Extrusion Tests, Shivakumaran Bharadwaj Venkataraman

Graduate Theses, Dissertations, and Problem Reports (ETD)

The double-cup extrusion testing method was chosen for measuring the pressure and material flow parameters in order to quantify the frictional shear factor between the workpiece and the forming tool in cold metal forming processes. The test was adapted to be used under production conditions and applied to characterize and compare the lubrication properties of different types of lubricants and coatings.;It was found to be a useful approach to estimate the relative efficiency of different lubricants and coating methods. It indicated that one specific lubricant has significantly superior lubricant characteristics than others.;FEA analysis of the experimental setup was constructed to …

Learning To Look Through The Eyes Of Our Students: Action Research As A Tool Of Inquiry, Joanne Arhar, Gayle A. Buck

Department of Teaching, Learning, and Teacher Education: Faculty Publications

The story we are about to tell occurred when Gayle was a middle school science teacher and graduate student in Joanne’s seminar on the study of teaching. Gayle was trying to make sense of her science students’ indifference toward the environment, an attitude that concerned her as an environmentalist. She turned her inquiry into an action research project that sought to answer the question, ‘What are the assumptions that my middle school students have about their relationship with the environment?’ Joanne was mentoring Gayle in her action research study, and at the same time exploring Gayle’s perspective as an action …

Clear Consensus, Ambiguous Commitment, Christopher H. Schroeder

Michigan Law Review

Americans from every demographic, socioeconomic, racial, and ethnic category identify themselves as concerned about the environment, and most say that they have personally taken steps to reduce pollution or improve environmental quality in some way. One of the most salient cultural and social signatures of the contemporary era in the United States, and throughout much of the world, has been the diffusion of a desire to protect, preserve, and restore features of the natural environment to a greater degree than current practices and policies do. These environmental concerns are not only widely shared, they have been extended to become a …

Factors Found When Integrating Computer Technology In A Small Rural School District, Edward Dale Jeffreys

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this research study was to provide school board members, school administrators, and teachers with information required in developing a successful plan for the integration of computer technology into the classroom curriculum. The stated problem of this research was to identify and analyze the factors that inhibit and enhance the implementation of computer technology into the classrooms of a small rural school district.;A review of the literature was conducted in the following areas: (a) the use of computer technology in K--12 rural school districts; (b) enhancers to the integration of computer technology into the classroom curriculum in small …

Contrawound Toroidal Helical Antenna Modeling Using The Fdtd Method, Khaled Mohammad Elsherbini

Graduate Theses, Dissertations, and Problem Reports (ETD)

The contrawound toroidal helical antenna (CTHA) is a patented antenna developed at the Center for Industrial Research Applications (CIRA) of West Virginia University. In this study, a computer numerical model was built to simulate the behavior of printed circuit board versions of the CTHA. The numerical model was built upon the finite difference time domain method (FDTD). The results were compared to results from physical antennas, obtained from the CIRA anechoic chamber located in the WVU hanger, to verify the validity of the results of the numerical model. The results from both the numerical and experimental models were also used …

Investigating Spelling Through Generative Instruction, Linda Ross

Graduate Theses, Dissertations, and Problem Reports (ETD)

The present study examined the components of generative instruction through the teaching of spelling rules. In Experiment 1, the effects of direct versus passive instruction and rate building versus equal-time practice were examined. Forty undergraduate students with below average spelling skills participated. Although there were better performances under passive instruction on some aspects of the posttests, and improved performance with rate-building practice on others, these results were not systematic and were contradicted by other results. The effects of rate building versus an equal amount of practice on the training and posttest application of spelling rules were examined in Experiment 2. …

Development And Testing Of A Rapid Assessment Methodology For Instream Habitat, Nathan R. Kennard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Several methods were undertaken to develop a rapid assessment methodology for predicting the relative magnitude of available habitat as measured by normalized weighted useable area, NWUA, based on limited watershed characteristics and/or limited field data observations. Data from 170 river sites primarily in Idaho, comprising 645 cross sections, were used. The three methodologies considered were generalized linear models (GLM), generalized additive models (GAM), and a newly developed comparative cross-section method (CCM). The GLM and GAM methods relied on a combination of field data and information readily obtained or derivable using geographic information systems (GIS). They also require the delineation of …

Multispectral Imaging, Image-Processing And Classification For Agriculture, Leonard. C. Lobo, Okan K. Ersoy, Gaines E. Miles

Department of Electrical and Computer Engineering Technical Reports

The prevention and control of weed infestation is a matter of importance in the agricultural domain. American farmers alone annually spend $4 billion to protect $16 billion in crops. This work moves in this direction and aims to classify weeds from crops and then spray the weeds in real-time. Another aim is to find the correlation coefficient between the nitrogen treatment levels of the crops and the statistical values computed. In this work, multispectral reflectance images are used in conjunction with classification techniques to detect, classify and spray weeds on a real-time basis in the field. Multispectral images were grabbed …

An Elliptic Equation With Spike Solutions Concentrating At Local Minima Of The Laplacian Of The Potential, Gregory S. Spradlin

Publications

We consider the equation −ԑ2∆u + V (z)u = f(u) which arises in the study of nonlinear Schrödinger equations. We seek solutions that are positive on RN and that vanish at infinity. Under the assumption that f satisfies super-linear and sub-critical growth conditions, we show that for small ԑ there exist solutions that concentrate near local minima of V. The local minima may occur in unbounded components, as long as the Laplacian of V achieves a strict local minimum along such a component. Our proofs employ vibrational mountain-pass and concentration compactness arguments. A penalization technique developed by Felmer and del …

A Magnetic And Crystallographic Study Of (Sm/Gd)₂(Fe/Si)₁₇CZ Solid Solutions, Peter C. Ezekwenna, G. K. Marasinghe, J. H. Nam, William Joseph James, William B. Yelon, M. Ellouze, Ph. I'Héritier

Chemistry Faculty Research & Creative Works

The crystallographic and magnetic properties of Sm_yGd_2-yFe_17-xSi_x (0 ≤ x ≤ 3 and y = 1 and 1.5) solid solutions and their interstitial carbides have been investigated using x-ray diffraction and magnetic measurements. The Sm_yGd_2-yFe_17-xSi_x samples crystallized in the rhombohedral Th₂Zn₁₇ structure with less than 5 mol % of impurities. The unit cells of the mixed rare-earth (R) samples are smaller than those of Sm₂Fe₁₇ and Gd₂Fe₁₇. The carbided samples contain up to a total of …

The Atomic And Magnetic Structure Of Ndmn(₆₋ₓ)Feₓge₆ Solid Solutions, J. Han, G. K. Marasinghe, William Joseph James, Muguo Chen, William B. Yelon, I. Dubenko, Naushad Ali

Chemistry Faculty Research & Creative Works

The magnetic and crystallographic properties of induction-melted NdMn_(6-x)Fe_xGe₆ intermetallics (x = 0, 1.0, and 1.5) in the temperature range of 30-475 K have been studied by x-ray and neutron diffraction techniques and SQUID measurements. All of the samples crystallized in the YCo₆Ge₆-type structure (P6/mmm). A small amount ( < 5 mol%) of Nd(MnFe)₂Ge₂ is present as an impurity. As expected, iron replaces manganese at the 3g site. The unit cell volume decreases slightly with increasing iron content at an average rate of 1.3% per substituted atom. Lattice parameters a and c contract at …

The Sequence Stratigraphy Of The Middle Cambrian Wheeler Formation In The Drum Mountains Of West Central Utah, Loren P. Schneider

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The majority of the Middle Cambrian Wheeler Formation in the Drum Mountains was deposited during a single 3^rd order sequence. Superimposed onto this sequence are three indistinct 4^th order cycles and twenty distinct 5^th order cycles. These higher order cycles were likely deposited within short intervals of geologic time (204 to 405 ky).

The lower sequence boundary zone occurs within the Swasey Formation. The Transgressive Surface is the contact between the Swasey and Wheeler Formations. The Maximum Flooding Surface is located near the top of the lower Wheeler Formation, which also approximates the base of the Ptychagnostus …

Creative Writing Techniques Across Genres: A Portfolio Of Applied And Creative Works, Debra S. Rasure

Digitized Theses and Dissertations (prior to 2008)

A portfolio submitted in partial fulfillment of the requirements for the degree of Master of Arts in Professional Writing in the Department of English in the College of Humanities and Social Sciences of Kennesaw State University

The Effects Of A Mentoring Program On Motivation To Read In First Graders, Laura Schmidt Smith

Digitized Theses and Dissertations (prior to 2008)

A thesis submitted in partial fulfillment of the requirements for the degree of Master of Education in the Department of Elementary and Early Childhood Education in the Bagwell College of Education of Kennesaw State University

Solute Transport As Related To Soil Structure In Unsaturated Intact Soil Blocks, L. Bejat, E. Perfect, V. L. Quisenberry, Mark S. Coyne, G. R. Haszler

Plant and Soil Sciences Faculty Publications

Concern about soil and groundwater pollution has resulted in numerous studies focused on solute transport. The objectives of our study were to investigate the effect of soil type and land-use management on solute movement. Transport of water and Cl⁻ were measured through intact blocks of Maury (fine, mixed, semiactive, mesic Typic Paleudalf) and Cecil (fine, kaolinitic, thermic Typic Kanhapludult) soils, under steady-state, unsaturated flow conditions. Three replicate blocks for the Maury soil and two replicate blocks for the Cecil soil were studied per land-use treatment. The land-use treatments were conventional-till corn (Zea mays L.) production and long-term grass …

Retention Of Ionizable Compounds In Hplc, Rosario Lobrutto

Seton Hall University Dissertations and Theses (ETDs)

No abstract provided.

Fundamental Capillary Electrophoresis: An Evaluation Of Electrokinetic Sampling, Cindy Ann Mleziva Blake

Seton Hall University Dissertations and Theses (ETDs)

Capillary electrophoresis has become a powerful separation technique in fields of biochemical separations, inorganic ions, and chiral separations. The technique has experienced exponential growth since the historic publication of Zone Electrophoresis in Open-Tubular Glass Capillaries by Lukacs and Jorgenson in 1981. However, the use of capillary electrophoresis as a primary research analysis tool still remains to be seen in many pharmaceutical laboratories. One of the main reasons for this is that it remains difficult to validate CE methods using the criteria of quantitation and accuracy posed by the current government regulating agencies, as developed for high performance liquid chromatography and …

Vas (Visual Analysis System): An Information Visualization Engine To Interpret World Wide Web Structure, Tarkan Karadayi

Theses and Dissertations - UTB/UTPA

People increasingly encounter problems of interpreting and filtering mass quantities of information. The enormous growth of information systems on the World Wide Web has demonstrated that we need systems to filter, interpret, organize and present information in ways that allow users to use these large quantities of information. People need to be able to extract knowledge from this sometimes meaningful but sometimes useless mass of data in order to make informed decisions. Web users need to have some kind of information about the sort of page they might visit, such as, is it a rarely referenced or often-referenced page? This …

Vertices In Total Dominating Sets., Robert Elmer Dautermann Iii

Electronic Theses and Dissertations

Fricke, Haynes, Hedetniemi, Hedetniemi, and Laskar introduced the following concept. For a graph G = (V,E), let rho denote a property of interest concerning sets of vertices. A vertex u is rho-good if u is contained in a {minimum, maximum} rho-set in G and rho-bad if u is not contained in a rho-set. Let g denote the number of rho-good vertices and b denote the number of rho-bad vertices. A graph G is called rho-excellent if every vertex in V is rho-good, rho-commendable if g > b > 0, rho-fair if g = b, and …

Policy And Practice Concerning Essay-Grading Criteria In Developmental English And College-Level English Programs In Tennessee Community Colleges., Walter Paul Wolford

Electronic Theses and Dissertations

The criteria used to grade college essays have been the subject of research for over three decades. Using quantatative data, this study investigated the differences in essay-grading criteria and essay-grading policy among full-time faculty members who teach English composition in Tennessee's community colleges.

This study revealed beliefs about the importance of essay-grading criteria and beliefs about written and unwritten essay-grading policies among those who teach developmental English, college-level English, and those who teach both levels of English. This study hypothesized that there were no differences among the English composition teacher's beliefs about the importance of the twenty essay-grading criteria nor …

Statistical Power Analysis Of Dissertations Completed By Students Majoring In Educational Leadership At Tennessee Universities, Heping Deng

Electronic Theses and Dissertations

The purpose of this study was to estimate the level of statistical power demonstrated in recent dissertations in the field of educational leadership. Power tables provided in Cohen's (1988) Statistical Power Analysis for the Behavioral Sciences were used to determine the power of the statistical tests conducted in dissertations selected from five universities in Tennessee. The meta-analytic approach was used to summarize and synthesize the findings. The population of this study consisted of all dissertations successfully defended by doctoral students majoring in educational leadership/administration at East Tennessee State University, the University of Tennessee at Knoxville, Tennessee State University, the University …

University Of Montana Events Tuesday, May 2, Through Monday, May 8, 2000, University Of Montana--Missoula. Office Of University Relations

University of Montana News Releases, 1928, 1956-present

No abstract provided.

Effects Of Cumulative Practice On Mathematics Problem -Solving Behavior, Kristin Hobbs Hazlett

Graduate Theses, Dissertations, and Problem Reports (ETD)

Mathematics education has long been in need of improved methods of instruction, particularly in the area of problem-solving skills. This study compared three methods of training rules about laws of exponents and order of operations. All three training methods used the same mastery criterion for training each rule and included the same number of practice trials during review sessions that preceded each test. The difference between conditions involved what types of problems were presented during the reviews. For each review session, the cumulative group (n = 11) practiced 50 problems covering all rules learned up to that review. The simple …

Rollover Stability Of Partially Filled Heavy-Duty Elliptical Tankers Using Trammel Pendulums To Simulate Fluid Sloshing, Mohamed Ibrahim Salem

Graduate Theses, Dissertations, and Problem Reports (ETD)

Partially filled tankers undergoing turns or lane change maneuvers have a lower rollover threshold than any other type of vehicle. In order to study and simulate the lateral fluid sloshing effects in partially filled elliptical and cylindrical tankers a trammel pendulum has been utilized. The fundamental basis of selecting the appropriate pendulum parameters have been obtained by matching the pendulum dynamic effects with fluid sloshing dynamic effects obtained using Finite Element (FE) fluid models. Elliptical tankers with different aspect ratios and different levels of fill were considered. The trammel pendulum effects were verified against fluid models from two packages (FLUENT …

Activated Carbon Injection For Mercury Control In Coal-Fired Boilers, Randy Ray Brintnell

Theses and Dissertations

Mercury is a toxic compound causing numerous health problems in humans. One of the ways that mercury is released into the atmosphere is through the burning of coal. The Environmental Protection Agency estimates that the United States consumes i billion tons of coal per year and coal-fired utilities emit 73 tons of mercury per year. Though there arc currently no regulations on mercury emissions, it will remain an environmental concern.

Activated carbon (AC) injection is a proposed technology for mercury control in coal-fired boilers. We are interested in determining whether the diffusion rate or the absorptive capacity of the sorbent …