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2004

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Quasioptimality Of Some Spectral Mixed Methods, Jay Gopalakrishnan, Leszek Demkowicz Jan 2004

Quasioptimality Of Some Spectral Mixed Methods, Jay Gopalakrishnan, Leszek Demkowicz

Mathematics and Statistics Faculty Publications and Presentations

In this paper, we construct a sequence of projectors into certain polynomial spaces satisfying a commuting diagram property with norm bounds independent of the polynomial degree. Using the projectors, we obtain quasioptimality of some spectralmixed methods, including the Raviart–Thomas method and mixed formulations of Maxwell equations. We also prove some discrete Friedrichs type inequalities involving curl.

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Analysis Of A Multigrid Algorithm For Time Harmonic Maxwell Equations, Jay Gopalakrishnan, Joseph E. Pasciak, Leszek Demkowicz Jan 2004

Analysis Of A Multigrid Algorithm For Time Harmonic Maxwell Equations, Jay Gopalakrishnan, Joseph E. Pasciak, Leszek Demkowicz

Mathematics and Statistics Faculty Publications and Presentations

This paper considers a multigrid algorithm suitable for efficient solution of indefinite linear systems arising from finite element discretization of time harmonic Maxwell equations. In particular, a "backslash" multigrid cycle is proven to converge at rates independent of refinement level if certain indefinite block smoothers are used. The method of analysis involves comparing the multigrid error reduction operator with that of a related positive definite multigrid operator. This idea has previously been used in multigrid analysis of indefinite second order elliptic problems. However, the Maxwell application involves a nonelliptic indefinite operator. With the help of a few new estimates, the …

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A Characterization Of Hybridized Mixed Methods For Second Order Elliptic Problems, Bernardo Cockburn, Jay Gopalakrishnan Jan 2004

A Characterization Of Hybridized Mixed Methods For Second Order Elliptic Problems, Bernardo Cockburn, Jay Gopalakrishnan

Mathematics and Statistics Faculty Publications and Presentations

In this paper, we give a new characterization of the approximate solution given by hybridized mixed methods for second order self-adjoint elliptic problems. We apply this characterization to obtain an explicit formula for the entries of the matrix equation for the Lagrange multiplier unknowns resulting from hybridization. We also obtain necessary and sufficient conditions under which the multipliers of the Raviart–Thomas and the Brezzi–Douglas–Marini methods of similar order are identical.

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Decentralized Control Of Vehicle Formations, Gerardo Lafferriere, Anca Williams, John S. Caughman Iv, J. J. P. Veerman Jan 2004

Decentralized Control Of Vehicle Formations, Gerardo Lafferriere, Anca Williams, John S. Caughman Iv, J. J. P. Veerman

Mathematics and Statistics Faculty Publications and Presentations

This paper investigates a method for decentralized stabilization of vehicle formations using techniques from algebraic graph theory. The vehicles exchange information according to a pre-specified communication digraph, G. A feedback control is designed using relative information between a vehicle and its in-neighbors in G. We prove that a necessary and sufficient condition for an appropriate decentralized linear stabilizing feedback to exist is that G has a rooted directed spanning tree. We show the direct relationship between the rate of convergence to formation and the eigenvalues of the (directed) Laplacian of G. Various special situations are discussed, including …

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Avatar, Sean Kirchhoff Jan 2004

Avatar, Sean Kirchhoff

Theses

AVATAR||Presents the artist's personal experience and background for the artist's thesis exhibit, the artist's work of previous quarters at RIT, influential artists, and the philosophy behind the artist's use of appropriation.

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Domestic Chair, Wei-Mien Hsu Jan 2004

Domestic Chair, Wei-Mien Hsu

Theses

None provided.

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Motivators For Enrolling Children In Preschool And Child Care Programs: A Difference Between Latino And Non-Latino Parents, Barbara Andre Jan 2004

Motivators For Enrolling Children In Preschool And Child Care Programs: A Difference Between Latino And Non-Latino Parents, Barbara Andre

OTS Master's Level Projects & Papers

The goals of this study were to answer the following questions: 1. Is there a difference in the reasons why parents enroll children in daycare and preschool programs between Latino and non-Latino parents? 2. Is program cost a primary factor for both groups of parents? 3. Do both groups put equal emphasis on the development of social skills as a reason for enrollment? 4. Do both groups use friends and relatives for childcare more than they use daycare and preschool programs? 5. Is there a difference in value placed upon educating children at an early age between Latino and non-Latino …

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Performance Comparison Of Trade Readjustment Act And Traditional Students Of Wytheville Community College, Jeffrey B. Fields Jan 2004

Performance Comparison Of Trade Readjustment Act And Traditional Students Of Wytheville Community College, Jeffrey B. Fields

OTS Master's Level Projects & Papers

The problem of this study was to determine how Trade Readjustment Act (TRA) students' academic performance of grade point average compared to traditional students in academic programs at Wytheville Community College. To solve this problem, the following hypothesis was established: 1. Trade Readjustment Act students earned higher grade point averages than traditional students at Wytheville Community College.

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The Success Rate Of Military Students In The Armed Services Vocational Aptitude Battery Preparation Class, Margaret A. Russo Jan 2004

The Success Rate Of Military Students In The Armed Services Vocational Aptitude Battery Preparation Class, Margaret A. Russo

OTS Master's Level Projects & Papers

To determine the solution to this problem, the following hypothesis was established: 1. Military students who had taken the two week, 54-hour ASVAB Preparation Class had a better rate of success than those who exceeded the two week 54-hour class and finished using the self-paced format.

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Determination Of Why Students Enrolled In Bluefield Regional Medical Center School Of Medical Technology Cannot Receive Government Financial Assistance, James E. Gibberson Jan 2004

Determination Of Why Students Enrolled In Bluefield Regional Medical Center School Of Medical Technology Cannot Receive Government Financial Assistance, James E. Gibberson

OTS Master's Level Projects & Papers

The goals established to guide this study were as follows: 1. Determine why students cannot receive government financial assistance while performing their clinical training at Bluefield Regional Medical Center Laboratory; 2. Determine other means in which students may obtain financial assistance in order to pay for their clinical education at Bluefield Regional Medical Center; 3. Determine how can the institutions, Bluefield Regional Medical Center, Bluefield State College and Bluefield College, work together to form a system of financial assistance for students if government financial assistance is not available.

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Collaborative Strategies That Would Minimize Interruption In Work Output In A Human Resources Development Department During An Acquisition, Crystal E. Lilly Jan 2004

Collaborative Strategies That Would Minimize Interruption In Work Output In A Human Resources Development Department During An Acquisition, Crystal E. Lilly

OTS Master's Level Projects & Papers

The problem of this study was to identify collaborative strategies that would minimize interruption in work output in a Human Resources Development department during an acquisition.

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The Types Of Computer Technology Skills Needed By Graduates Of The Information Systems Technology Program, Thomas Czerwinski Jan 2004

The Types Of Computer Technology Skills Needed By Graduates Of The Information Systems Technology Program, Thomas Czerwinski

OTS Master's Level Projects & Papers

To guide the solution to this problem, the following research goals were established: 1. The researcher will identify computer skills required of entry-level technicians at Canon I.T.S.; 2. The researcher will identify the types of computer technology courses offered in the IST program at Paul D. Camp Community College; 3. The researcher will align the Canon competency needs with Paul D. Camp Community College Information Systems Technology courses.

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Marketing Supported Employment Programs And The Relationship To Employment Opportunities, Sara L. Mcinturff Jan 2004

Marketing Supported Employment Programs And The Relationship To Employment Opportunities, Sara L. Mcinturff

OTS Master's Level Projects & Papers

The purpose of this study was to determine the relationship between the marketing of the Job Link Program to business members of the Loudoun County Chamber of Commerce and its relationship to employment opportunities for adults with significant disabilities.

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The Effects Of Reading Readiness And Student Achievement In The Primary Grades Through The Use Of Phonemic Awareness, Curtis A. S. Campbell Jan 2004

The Effects Of Reading Readiness And Student Achievement In The Primary Grades Through The Use Of Phonemic Awareness, Curtis A. S. Campbell

OTS Master's Level Projects & Papers

The problem of the study was to determine the effects that reading readiness, such as phonemic awareness, alphabet knowledge, concept of word, and letter-sound knowledge, and the relationship it has on student achievement on the Phonological Awareness Literacy Screening (PALS) Test on a kindergarten class at Deep Creek Central Elementary School in Chesapeake.

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Impact Of Kindergarten Format On First-Grade Phonological Awareness Literacy Screening Assessments, Gail W. Ricks Jan 2004

Impact Of Kindergarten Format On First-Grade Phonological Awareness Literacy Screening Assessments, Gail W. Ricks

OTS Master's Level Projects & Papers

To solve this problem, the following hypothesis was developed: 1. Students that attended full-day kindergarten programs will outperform those students that attend half-day kindergarten on the fall first-grade Phonological Awareness Literacy Screening (PALS).

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Code, Konstantinos Batalamas Jan 2004

Code, Konstantinos Batalamas

Theses

Not Included

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Forecasting Hospital Bed Availability Using Computer Simulation And Neural Networks, Matthew J. Daniels Jan 2004

Forecasting Hospital Bed Availability Using Computer Simulation And Neural Networks, Matthew J. Daniels

Theses

The success of hospitals in treating patients and staying in business relies on their efficient use of resources. In particular, the utilization of hospital beds is a critical concern, since over-crowding will result in delays or transfers of patients, and under-utilization will result in lost opportunity to treat patients and generate profit. To this end, hospital decision makers must have reliable forecasts of patient demand and bed availability. The objective of this thesis was to create a general method to forecast the availability of hospital beds in the short term, up to 2 days into the future. Specifically, this thesis …

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Body/Landscape, Ju Yi Chia Jan 2004

Body/Landscape, Ju Yi Chia

Theses

Not Included

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Novel Vlsi Architecture Of Motion Estimation And Compensation For H.264 Standard, Xiang Li Jan 2004

Novel Vlsi Architecture Of Motion Estimation And Compensation For H.264 Standard, Xiang Li

Theses

This thesis presents a high performance novel VLSI architecture of a H.264 motion estimator, which can be used as a building block for real-time H.264 video compression. Full-search block matching algorithm was used in this design. Pipeline structure was developed for variable block size processing units to work in parallel. The speed at 125MHz is good for real time motion estimation with 25/sec frame rate and 640x480 resolutions. The processing speed is also independent of the threshold level of Sum of Absolute Difference (SAD), which is used to determine the size of the macro block. The architecture is implemented with …

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Effective Crisis Intervention In The School: The Role Of Training, Experience, And Self-Efficacy On School Psychologists' Ability To Intervene, Erica J. Deming Jan 2004

Effective Crisis Intervention In The School: The Role Of Training, Experience, And Self-Efficacy On School Psychologists' Ability To Intervene, Erica J. Deming

Theses

School psychologists' graduate and post-graduate preparation, intervention experience, and self-efficacy regarding crisis intervention services were investigated. A national survey was mailed to members of the National Association of School Psychologists (NASP) that resulted in a return rate of 38%. Demographic statistics indicated that a majority of school psychologists received at least some preservice crisis intervention training; however, 82.6% do not feel that this adequately prepared them to provide crisis intervention. Experience ratings suggested that school psychologists have little to no experience with gangs, weapons, gun control, natural disasters, and dealing with the media during a crisis. Chrildren's dealing with the …

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Digitally Tunable Low Noise Amplifier, Mohamed Benmansour Jan 2004

Digitally Tunable Low Noise Amplifier, Mohamed Benmansour

Theses

Low noise amplifiers are classified into two categories: Wideband low noise amplifiers and Narrowband low noise amplifiers. Wideband LNAs are known for achieving a poor noise performance. On the other hand, the noise performance of the narrowband amplifiers is good but only over a small frequency range. This constraint made their use restricted to certain applications, such as cellular phone applications (superheterodyne architecture), where a single operational frequency is needed. This thesis introduces a new low noise amplifier topology that provides a high selectivity and a low noise figure over a wide frequency range. The digitally tunable low noise amplifier …

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Dynamic Input Match Correction In R.F. Low Noise Amplifiers, Tejasvi Das Jan 2004

Dynamic Input Match Correction In R.F. Low Noise Amplifiers, Tejasvi Das

Theses

An R.F. circuit that recognizes its faults, and then corrects its performance in real-time has been the holy-grail of RFIC design. This work presents, for the first time, a complete architecture and successful implementation of such a circuit. It is the first step towards the grand vision of fault-free, package independent, integrated R.F. Front End circuitry. The performance of R.F. front-end circuitry can degrade significantly due to process faults and parasitic package inductances at its input. These inductances have wide tolerances and are difficult to co-design for. A novel methodology, which overcomes current obstacles plaguing such an objective, is proposed …

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Single Phase Thermohydraulic Performance Analysis Of Microchannel Flow Geometry For Direct Chip Cooling, Harshal R. Upadhye Jan 2004

Single Phase Thermohydraulic Performance Analysis Of Microchannel Flow Geometry For Direct Chip Cooling, Harshal R. Upadhye

Theses

This study examines how direct chip cooling with microchannels can be implemented to regulate the junction temperature of silicon integrated circuits. An optimization is done to identify the channel configuration yielding the minimum pressure drop for a given heat load.

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Lorem Ipsum, A Story About Words And Pictures: What They Can Do, And What They Can't, David Huth Jan 2004

Lorem Ipsum, A Story About Words And Pictures: What They Can Do, And What They Can't, David Huth

Theses

Everything we understand about the world comes to us through, and can be captured by, the linguistic use of words and pictures. Or does it? This is a question that addresses the core function and purpose of visual communications design. The question is explored in this film thematically, narratively, and technically, by portraying a story about a person struggling to understand language and solve a unique, high stakes design problem: the library cataloging of an entire human life. This is a creative project that uses computer graphics design technology and the unique presentation of typographical design problems to provoke thought …

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Up, Hardeep Kharbanda Jan 2004

Up, Hardeep Kharbanda

Theses

Not Included

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Hamchilla And Kill Monkey Otaru In: The Island Of Dr. Gno, Gregory J. Dorman Jan 2004

Hamchilla And Kill Monkey Otaru In: The Island Of Dr. Gno, Gregory J. Dorman

Theses

A descriptive narration of a project to create an animated film, "Hamchilla and Kill Monkey Otaru in: The Island of Dr. Gno." Includes proposal, character art, budget, storyboard, production stills, two versions of a script, and character sketches

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Embedded Charge For Microswitch Applications, Joanna Kiljan Jan 2004

Embedded Charge For Microswitch Applications, Joanna Kiljan

Theses

In this work a micro-electro-mechanical system (MEMS) is proposed for radio frequency (RF) switching applications. MEMS devices outperform the traditionally used solid-state devices in areas such as isolation, insertion loss, and linearity. However, micro switches suffer from high actuation voltage, lifetime limitations, and high packaging cost. A novel micro switch design that incorporates embedded charge in a cantilever structure can, in principle, enable low-voltage operation. This was the primary motivation for this study

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A Physics-Based Analytical Model Of An Algan/Gan High Electron Mobility Transistor, Jonathan Sippel Jan 2004

A Physics-Based Analytical Model Of An Algan/Gan High Electron Mobility Transistor, Jonathan Sippel

Theses

Popular semiconductors currently being used for RF applications include GaAs and InP. The operating frequencies for HEMTs built with these semiconductors covers the range from 800 MHz to 100 GHz. Although high-speed operation is attainable using GaAs or InP, product performance is limited when considering high-power applications, where a high breakdown field and thermal conductivity is needed. Proposed about fifteen years ago as a solution to this problem, GaN has emerged as a viable candidate to challenge, and perhaps overtake, GaAs and InP as the dominant semiconductor in RF products, particularly power amplifiers. This is due to its high breakdown …

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Surface Modification Of Polytetrafluoroethylene (Ptfe) With Vacuum Uv Radiation From Helium Microwave Plasma To Enhance The Adhesion Of Sputtered Copper, Xiaolu Liao Jan 2004

Surface Modification Of Polytetrafluoroethylene (Ptfe) With Vacuum Uv Radiation From Helium Microwave Plasma To Enhance The Adhesion Of Sputtered Copper, Xiaolu Liao

Theses

Teflon® materials are well known for excellent thermal and chemical resistance properties. Their low dielectric constant makes them good materials for substrates in electronic packaging of microsystems where copper is often used as the conductor. Good adhesion between Cu and the hydrophobic PTFE is required in the microelectronics industry. A low-pressure helium MW plasma was used to modify the surface of PTFE located downstream from the plasma. Sometimes, oxygen was flowed over the surface of PTFE. Negligible photo-etching (≤ 1nm/min) was observed. The contact angle of treated PTFE film was found to decrease from an average value of 104° for …

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Web Radio Blueprint, Michael P. Moran Jan 2004

Web Radio Blueprint, Michael P. Moran

Theses

The Internet is one of the most significant technological developments in our lifetime, and its impact affects many established technologies and media. Radio is one of the established media revolutionized by the Internet because of the expanding multi-media capabilities, leading the way to a more focused medium when compared to traditional terrestrial radio broadcasting. Radio transmissions over the Internet (Web Radio) offers the opportunity to provide content focused to a “niche” audience, while providing an opportunity for broader operator participation than terrestrial radio. Web Radio is an Information Technology that offers a viable alternative to commercial radio, which has become …

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