Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2002

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 6781 - 6810 of 7457

Full-Text Articles in Entire DC Network

Novel Time Domain Radiowave Propagators For Wireless Communication Systems, Funda Akleman, M. O. Özyalçin, Levent Sevgi̇ Jan 2002

Novel Time Domain Radiowave Propagators For Wireless Communication Systems, Funda Akleman, M. O. Özyalçin, Levent Sevgi̇

Turkish Journal of Electrical Engineering and Computer Sciences

In this study, novel time domain wave propagators are used in path loss calculations for macro and micro cell coverage planning in wireless communication systems. Both Transmission Line Matrix (TLM) and Finite-Difference Time-Domain (FDTD) based propagators, which were introduced recently and validated and verified on different canonical propagation scenarios, are used for this purpose. Examples are chosen both in rural and urban areas, where two propagators are compared with each other. Excellent agreement between the results obtained via two propagators is presented. The results presented here are very encouraging and these propagators are shown to be powerful tools for not …


Floquet Wave Diffraction Theory For Tapered Planar Strip Array Green's Function, F. Capolino, F. Mariottini, S. Maci, L. B. Felsen Jan 2002

Floquet Wave Diffraction Theory For Tapered Planar Strip Array Green's Function, F. Capolino, F. Mariottini, S. Maci, L. B. Felsen

Turkish Journal of Electrical Engineering and Computer Sciences

This paper deals with the derivation and physical interpretation of a uniform high frequency representation of the Green's function for a planar phased array of dipoles. The asymptotic representation is based on Floquet wave edge diffraction theory herein extended to accommodate slowly varying tapered amplitude illumination with possible inclusion of dipole amplitudes that tend to zero at the edge. The phased array is assumed to be infinite with uniform amplitude excitation in the z-direction but finite and amplitude-tapered in the x-direction. This geometry permits study of diffraction phenomena occurring at the tapered edge of a rectangular array when the observation …


An Exact Line Integral Representation Of The Po Radiation Integral From A Flat Perfectly Conducting Surfaces Illuminated By Elementary Electric Or Magnetic Dipoles, Matteo Albani, Stefano Maci Jan 2002

An Exact Line Integral Representation Of The Po Radiation Integral From A Flat Perfectly Conducting Surfaces Illuminated By Elementary Electric Or Magnetic Dipoles, Matteo Albani, Stefano Maci

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, a line integral representation for the PO radiation integral from a flat perfectly conducting surface, illuminated by an arbitrary oriented elementary either electric or magnetic dipole, is presented. No restriction is imposed on the position of the source and of the observation point. The main application of this result is the acceleration of the numerical PO integration for electrically large surfaces. The formulation is based on the application of the equivalence principle to a projecting surface which allows the analytical evaluation in closed form of one of the two-fold surface integral which define the radiated field at …


Factors Influencing Teachers' Decisions To Refer Students For Special Education Evaluation, Amanda R. Perry Jan 2002

Factors Influencing Teachers' Decisions To Refer Students For Special Education Evaluation, Amanda R. Perry

Masters Theses

This study examined the factors that influence teachers to refer students for psycho-educational evaluation. Fifty seven teachers from Midwest and Southwest suburban and rural school districts completed a questionnaire designed to gather information about the factors teachers consider when referring students for evaluation, as well as their opinion of the etiology of Learning Disability and their preferences for services. Results indicated that the most influential factors in participants' referral decisions were low achievement and behavioral problems. The majority of teachers agreed that eligibility decisions should be based on the child's needs. However, there was no agreement that an ability-achievement discrepancy …


Building Bridges And Crossing Borders: Using Service Learning To Overcome Cultural Barriers To Collaboration Between Science And Education Departments, Kevin Carr Jan 2002

Building Bridges And Crossing Borders: Using Service Learning To Overcome Cultural Barriers To Collaboration Between Science And Education Departments, Kevin Carr

Service Learning, General

Science faculty and teacher education faculty need to coordinate in order to prepare teachers to teach science. This article describes several successful and unsuccessful collaboration efforts between scientists and educators that took place during the creation of an interdepartmental service learning project, Science Outreach, at George Fox University.


The Granite, 2002, University Of New Hampshire Jan 2002

The Granite, 2002, University Of New Hampshire

The Granite – Yearbook

The yearbook of the New Hampshire College of Agriculture and the Mechanic Arts, 1909-1922, the University of New Hampshire, 1923- The yearbook of the New Hampshire College of Agriculture and the Mechanic Arts, 1909-1922, the University of New Hampshire, 1923-


Naes Communique, Hank Lehrer, Brent D. Bowen Jan 2002

Naes Communique, Hank Lehrer, Brent D. Bowen

Aerospace States Association (ASA)

S1F NAES Communique 2002


Winner, Best Appellate Brief In The 2002 Native American Law Student Association Moot Court Competition, Michelle A. Carr, Cara Hair Jan 2002

Winner, Best Appellate Brief In The 2002 Native American Law Student Association Moot Court Competition, Michelle A. Carr, Cara Hair

American Indian Law Review

No abstract provided.


A Generalization Of Moufang And Steiner Loops, J.D. Phillips Jan 2002

A Generalization Of Moufang And Steiner Loops, J.D. Phillips

Journal Articles

We study a variety of loops, RIF, which arise naturally from considering inner mapping groups, and a somewhat larger variety, ARIF. All Steiner and Moufang loops are RIF, and all flexible C-loops are ARIF. All ARIF loops are diassociative.


A Note On Trimedial Quasigroups, J.D. Phillips Jan 2002

A Note On Trimedial Quasigroups, J.D. Phillips

Journal Articles

The purpose of this brief note is to sharpen a result of Kepka [2] [3] about the axiomization of the variety of trimedial quasigroups.


Every Diassociative A-Loop Is Moufang, J.D. Phillips Jan 2002

Every Diassociative A-Loop Is Moufang, J.D. Phillips

Journal Articles

An A-loop is a loop in which every inner mapping is an automorphism. We settle a problem which had been open since 1956 by showing that every diassociative A-loop is Moufang.


On The Modular Curve X(6) And Surfaces Admitting Genus 2 Fibrations, Gülay Karadoğan Jan 2002

On The Modular Curve X(6) And Surfaces Admitting Genus 2 Fibrations, Gülay Karadoğan

Turkish Journal of Mathematics

In this paper, we study the moduli spaces of surfaces admitting nonsmooth genus 2 fibrations with slope \lambda = 6 (necessarily) over curves of genus \geq 1. We determine the structure of each connected component of these moduli spaces. Our results fill the gap of earlier work in the literature to complete the picture of the moduli spaces of genus 2 fibrations over curves of genus \geq 2 except for the case of \lambda = 4.


Assessing Landsat Tm Imagery For Mapping And Monitoring Prairie Dog Colonies, Willard A. Gustafson Jan 2002

Assessing Landsat Tm Imagery For Mapping And Monitoring Prairie Dog Colonies, Willard A. Gustafson

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


The Effect Of Discharge Variation On Suspended Sediment And Particulate Contaminant Transport Through Milltown Reservoir Montana, Jan A. Shifflett Jan 2002

The Effect Of Discharge Variation On Suspended Sediment And Particulate Contaminant Transport Through Milltown Reservoir Montana, Jan A. Shifflett

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


College Student-Athletes' Experience Of Living With Attention Deficit Hyperactivity Disorder (Adhd): A Phenomenological Analysis, Charles G. Palmer Jan 2002

College Student-Athletes' Experience Of Living With Attention Deficit Hyperactivity Disorder (Adhd): A Phenomenological Analysis, Charles G. Palmer

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


Estimation In Generalized Linear Models And Time Series Models With Nonparametric Correlation Coefficients, Huaiqing Sheng Jan 2002

Estimation In Generalized Linear Models And Time Series Models With Nonparametric Correlation Coefficients, Huaiqing Sheng

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


The Effect Of Information On A Stochastic Fishery Model, Greg Cripe Jan 2002

The Effect Of Information On A Stochastic Fishery Model, Greg Cripe

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


A History Of Health Informatics In The Texas Medical Center, Kirt Walker, Deepak Sagaram, James P. Turley Jan 2002

A History Of Health Informatics In The Texas Medical Center, Kirt Walker, Deepak Sagaram, James P. Turley

Faculty, Staff and Student Publications

No abstract provided.


2002-2003 Undergraduate Catalog, Morehead State University Jan 2002

2002-2003 Undergraduate Catalog, Morehead State University

Morehead State Catalog Archive

2002-2003 undergraduate catalog of Morehead State University.


Evaluating The Prevalence, Content And Readability Of Complementary And Alternative Medicine (Cam) Web Pages On The Internet, Smitha Sagaram, Muhammad Walji, Elmer Bernstam Jan 2002

Evaluating The Prevalence, Content And Readability Of Complementary And Alternative Medicine (Cam) Web Pages On The Internet, Smitha Sagaram, Muhammad Walji, Elmer Bernstam

Faculty, Staff and Student Publications

Complementary and alternative medicine (CAM) use is growing rapidly. As CAM is relatively unregulated, it is important to evaluate the type and availability of CAM information. The goal of this study is to deter-mine the prevalence, content and readability of online CAM information based on searches for arthritis, diabetes and fibromyalgia using four common search engines. Fifty-eight of 599 web pages retrieved by a "condition search" (9.6%) were CAM-oriented. Of 216 CAM pages found by the "condition" and "condition + herbs" searches, 78% were authored by commercial organizations, whose pur-pose involved commerce 69% of the time and 52.3% had no …


Modeling Of Metal/Pattern Replacement In The Lost Foam Casting Process., Taras Vitalyevich Molibog Jan 2002

Modeling Of Metal/Pattern Replacement In The Lost Foam Casting Process., Taras Vitalyevich Molibog

All ETDs from UAB

No abstract provided.


The Structure And Dynamics Of High Density Lipoprotein Particles., Anthony Edward Klon Jan 2002

The Structure And Dynamics Of High Density Lipoprotein Particles., Anthony Edward Klon

All ETDs from UAB

No abstract provided.


Modal Predicates And Coequations, Alexander Kurz, Jiří Rosický Jan 2002

Modal Predicates And Coequations, Alexander Kurz, Jiří Rosický

Engineering Faculty Articles and Research

We show how coalgebras can be presented by operations and equations. This is a special case of Linton’s approach to algebras over a general base category X, namely where X is taken as the dual of sets. Since the resulting equations generalise coalgebraic coequations to situations without cofree coalgebras, we call them coequations. We prove a general co-Birkhoff theorem describing covarieties of coalgebras by means of coequations. We argue that the resulting coequational logic generalises modal logic.


"Just Trying To Spread The Groove" Creating And Sustaining Community Online At Phishhook.Com, Daniel J. Lair Jan 2002

"Just Trying To Spread The Groove" Creating And Sustaining Community Online At Phishhook.Com, Daniel J. Lair

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


Where To Draw The Line Between Reverse Engineering And Infringement: Sony Computer Entertainment, Inc., Derek Prestin Jan 2002

Where To Draw The Line Between Reverse Engineering And Infringement: Sony Computer Entertainment, Inc., Derek Prestin

Minnesota Journal of Law, Science & Technology

No abstract provided.


Upper Bound For The Non-Maximal Eigenvalues Of Irreducible Nonnegative Matrices, Xiao-Dong Zhang, Rong Luo Jan 2002

Upper Bound For The Non-Maximal Eigenvalues Of Irreducible Nonnegative Matrices, Xiao-Dong Zhang, Rong Luo

Faculty & Staff Scholarship

No abstract provided.


A Random Walk, Absorbtion, And Enumeration Of Returns, Joanna Cecile Rochester Jan 2002

A Random Walk, Absorbtion, And Enumeration Of Returns, Joanna Cecile Rochester

Honors Theses

The general notion of a Markov Chain is introduced in Chapter 1, and a theorem is proven characterizing the two-state Markov Chain. The concept central to the thesis, the Random Walk, is introduced in Chapter 2 and a thorough analysis is presented of a Random Walk in one dimension with a single absoring state. A theorem is proven which provides probabilities of absorption for arbitrary starting points. The theoretical results are then tested by computer simulation, yielding a very satisfying match with the predictions of the theorem. Finally, in Chapter 3 a modification of the Random Walk withou absoring states …


Students' Ability To Communicate Algebraically Using The Internet And E-Mail, Johnny Reynolds Moore Jan 2002

Students' Ability To Communicate Algebraically Using The Internet And E-Mail, Johnny Reynolds Moore

Honors Theses

The research idea came about as a result of Dr. Rock’s doctoral to whether or not there had been any his study was published in over st to conduct the study dissertation study. We were curious as improvements in mathematics communication since 1998. We used the Algebra in Action the course of an eight-week period Internet Conte . On the odd numbered weeks, we required correct explanation of how numbered weeks asked only for the students to submit the correct answer along with a they found their answer. The problems on even We hypothesized that there would be a significant …


Efficient Algorithms For Creation Of Linearly-Independent Decision Diagrams And Their Mapping To Regular Layouts, Marek Perkowski, Bogdan Jaroslaw Falkowski, Malgorzata Chrzanowska-Jeske, Rolf Dreschler Jan 2002

Efficient Algorithms For Creation Of Linearly-Independent Decision Diagrams And Their Mapping To Regular Layouts, Marek Perkowski, Bogdan Jaroslaw Falkowski, Malgorzata Chrzanowska-Jeske, Rolf Dreschler

Electrical and Computer Engineering Faculty Publications and Presentations

A new kind of a decision diagrams are presented: its nodes correspond to all types of nonsingular expansions for groups of input variables, in particular pairs. The diagrams are called the Linearly Independent (LI) Decision Diagrams (LI DDs). There are 840 nonsigular expansions for a pair of variables, thus 840 different types of nodes in the tree. Therefore, the number of nodes in such (exact) diagrams is usually much smaller than the number of nodes in the well-known Kronecker diagrams (which have only single-variable Shannon, Positive Davio, and Negative Davio expansions in nodes). It is usually much smaller than 1/3 …


Generalized Inclusive Forms — New Canonical Reed-Muller Forms Including Minimum Esops, Marek Perkowski, Alan Mishchenko, Malgorzata Chzanowka-Jeske Jan 2002

Generalized Inclusive Forms — New Canonical Reed-Muller Forms Including Minimum Esops, Marek Perkowski, Alan Mishchenko, Malgorzata Chzanowka-Jeske

Electrical and Computer Engineering Faculty Publications and Presentations

Reed-Muller (AND/EXOR) expansions play an important role in logic synthesis and circuit design by producing economical and highly-testable implementations of Boolean functions [3–6]. The range of Reed-Muller expansions include canonical forms, i.e. expansions that create unique representations of a Boolean function. Several large families of canonical forms: fixed polarity Reed-Muller forms (FPRMs), generalized Reed-Muller forms (GRMs), Kronecker forms (KROs), and pseudo- Kronecker forms (PKROs), referred to as the Green/Sasao hierarchy, have been described [7–9]. (See Fig. 1 for a settheoretic relationship between these families.)