Digital Commons Network^™

Partitioning Regular Polygons Into Circular Pieces Ii: Nonconvex Partitions, Mirela Damian, Joseph O'Rourke

Computer Science: Faculty Publications

We explore optimal circular nonconvex partitions of regular k-gons. The circularity of a polygon is measured by its aspect ratio: the ratio of the radii of the smallest circumscribing circle to the largest inscribed disk. An optimal circular partition minimizes the maximum ratio over all pieces in the partition. We show that the equilateral triangle has an optimal 4-piece nonconvex partition, the square an optimal 13-piece nonconvex partition, and the pentagon has an optimal nonconvex partition with more than 20 thousand pieces. For hexagons and beyond, we provide a general algorithm that approaches optimality, but does not achieve it.

Mwp Newsletter: Extended News Items, 2004, University Of Mississippi. Department Of English

MWP News and Newsletters

No abstract provided.

Meeting Nclb Goals For Highly Qualified Teachers: Estimates By State From Survey Data, Rolf K. Blank, Doreen Langesen, Elizabeth Laird, Carla Toye, Victor Bandeira De Mello

Education Policy Analysis Archives (EPAA)

This article presents results of survey data showing teacher qualifications for their assignments that are comparable from state-to-state as well as data trends over time. The analysis is intended to help state leaders, educators, and others obtain a picture of highly qualified teachers in their state, and to be able to compare their state statistics with states across the nation. ...

Scattering Of Low- To Intermediate-Energy Positrons From Molecular Hydrogen, David D. Reid, William B. Klann, J. M. Wadehra

Physics and Astronomy Faculty Research Publications

Using a complex model potential, we have calculated the total, integrated elastic, momentum transfer, absorption, and differential cross sections for positrons scattered from molecular hydrogen. The widely available software package GAUSSIAN is used to generate the radial electronic charge density of the molecule which is used to produce the interaction potentials. The quasifree absorption potential, previously developed and used for positron-atom scattering, is extended to positron scattering from molecular targets. It is shown that this model potential approach produces accurate results even into the low-energy regime.

Education Policy Analysis Archives 12/70 , Arizona State University, University Of South Florida

College of Education Publications

Meeting NCLB goals for highly qualified teachers : estimates by state from survey data / Rolf K. Blank, Doreen Langesen, Elizabeth Laird, Carla Toye [and] Victor Bandeira de Mello.

Monitor Newsletter December 20, 2004, Bowling Green State University

Monitor

Official Publication of Bowling Green State University for Faculty and Staff

Minimum Power Configuration In Wireless Sensor Networks, Guoliang Xing, Chenyang Lu, Ying Zhang, Qingfeng Huang, Robert Pless

All Computer Science and Engineering Research

This paper proposes the minimum power configuration (MPC) approach to energy conservation in wireless sensor networks. In sharp contrast to earlier research that treats topology control, power-aware routing, and sleep management in isolation, MPC integrates them as a joint optimization prob-lem in which the power configurationof a network consists of a set of active nodes and the transmission powers of the nodes. We show through analysis that the minimum power configu-ration of a network is inherently dependent on the data rates of sources. We propose several approximation algorithms with provable performance bounds compared to the optimal solu-tion, and a practical …

A Performance And Schedulability Analysis Of An Autonomous Mobile Robot, Ala' Adel Qadi, Steve Goddard, Jiangyang Huang, Shane Farritor

School of Computing: Technical Reports

We present an autonomous, mobile, robotics application that requires dynamic adjustments of task execution rates to meet the demands of an unpredictable environment. The Robotic Safety Marker (RSM) system consists of one lead robot, the foreman, and a group of guided robots, called robotic safety markers (a.k.a., barrels). An extensive analysis is conducted of two applications running on the foreman. Both applications require adjusting task periods to achieve desired performance metrics with respect to the speed at which a system task is completed, the accuracy of RSM placement, or the number of RSMs controlled by the foreman. A static priority …

Magnetoelectronics With Magnetoelectrics, Christian Binek, Bernard Doudin

Christian Binek Publications

Magnetoelectric films are proposed as key components for spintronic applications. The net magnetic moment created by an electric field in a magnetoelectric thin film influences the magnetization state of a neighbouring ferromagnetic layer through exchange coupling. Pure electrical control of magnetic confi gurations of giant magnetoresistance spin valves and tunnelling magnetoresistance elements is therefore achievable. Estimates based on documented magnetoelectric tensor values show that exchange fields reaching 100 mT can be obtained. We propose a mechanism alternative to current-induced magnetization switching, providing access to a wide range of device impedance values and opening the possibility of simple logic functions.

Inelastic Electron Tunneling Via Molecular Vibrations In Single-Molecule Transistors, L H. Yu, Z K. Keane, Jacob W. Ciszek, L Cheng, M P. Stewart, J M. Tour, D Natelson

Chemistry: Faculty Publications and Other Works

In single-molecule transistors, we observe inelastic cotunneling features that correspond energetically to vibrational excitations of the molecule, as determined by Raman and infrared spectroscopy. This is a form of inelastic electron tunneling spectroscopy of single molecules, with the transistor geometry allowing in situ tuning of the electronic states via a gate electrode. The vibrational features shift and change shape as the electronic levels are tuned near resonance, indicating significant modification of the vibrational states. When the molecule contains an unpaired electron, we also observe vibrational satellite features around the Kondo resonance.

Signature Of Electron Capture In Iron‐Rich Ejecta Of Sn 2003du, Peter Hoflich, Christopher L. Gerardy, Ken-Ichi Nomoto, Kentaro Motohara, Robert A. Fesen

Dartmouth Scholarship

Late-time near-infrared and optical spectra of the normal-bright Type Ia supernova 2003du about 300 days after the explosion are presented. At this late epoch, the emission profiles of well-isolated [Fe II] lines (in particular that of the strong 1.644 μm feature) trace out the global kinematic distribution of radioactive material in the expanding supernova ejecta. In SN 2003du, the 1.644 μm [Fe II] line seems to show a flat-topped profile, indicative of a thick but hollow-centered expanding shell, rather than a strongly peaked profile that would be expected from a "center-filled" distribution. Based on detailed models for exploding Chandrasekhar-mass white …

The Educational Roots Of Reformed Scholasticism: Dialectic And Scriptural Exegesis In The Sixteenth Century, Amy Nelson Burnett

Department of History: Faculty Publications

Over the last twenty years research on later sixteenth- and seventeenth-century theology has led to a reappraisal or Protestant scholasticism and its relation to the Reformation. Earlier historians of doctrine viewed Protestant scholasticism as overly rationalistic at the expense of Reformation biblicism, heavily dependent on Aristotelian philosophy, and organized around a central doctrine such as predestination. The current consensus is that Protestant scholasticism reflected the Orthodox theologians’ deep familiarity with and commitment to the scriptural text; that if it did appropriate Aristotle, such appropriation was eclectic rather than slavish; and that the idea of a central dogma organizing all of …

Ua45/6 Commencement Program, Wku Registrar

WKU Administration Documents

Commencement program listing graduates.

Fall Commencement [Program], December 18, 2004, University Of Northern Iowa

UNI Commencement Programs

The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.

155th Commencement, Winter

Commencement Programs

No abstract provided.

Equity And Adequacy: A Funding Crisis In The Tennessee Education System., Scott F. Collins

Electronic Theses and Dissertations

Tennessee is experiencing a budget crisis related to the dollar amount per-pupil expended on kindergarten- through 12th-grade education when compared to other states. Public schools across America are operating in a time of increased expectations. Recent legislative initiatives at both the state and federal level have created new systems of testing and performance standards that will hold schools and teachers accountable for students' achievement. Given the rapid changes that are being made, many state policymakers have noted the importance of designing better financial schemes for public schools with sufficient resources to meet the demand for better education; however, funding and …

2004 Fall Commencement, Harding University

Commencement Programs

Program for the Commencement on December 18.

Commencement Speaker: Don England

A Bayesian Technique For Task Localization In Multiple Goal Markov Decision Processes, James Carroll, Kevin Seppi

Faculty Publications

In a reinforcement learning task library system for Multiple Goal Markov Decision Process (MGMDP), localization in the task space allows the agent to determine whether a given task is already in its library in order to exploit previously learned experience. Task localization in MGMDPs can be accomplished through a Bayesian approach, however a trivial approach fails when the rewards are not distributed normally. This can be overcome through our Bayesian Task Localization Technique (BTLT).

Requirement Elicitation Of Large Web Projects., David E. Frazier

Electronic Theses and Dissertations

One of the most important aspects of developing a large Web-based project is getting the correct requirements from the client. Time and money can be lost if the requirements are incomplete or inaccurate. Traditional Web design sources tend to gloss over this important activity.

Software engineering is a mature field that can help in the quest for more complete and accurate requirement gathering. This paper explores the ways that traditional software engineering techniques can be applied to Web projects. A methodology is presented based on both existing and new techniques. Several experiments are conducted to determine the usefulness of each …

Timing And Nature Of The Deepening Of The Tasmanian Gateway, Catherine E. Stickley, Henk Brinkhuis, Stephen A. Schellenberg, Appy Sluijs, Ursula Röhl, Michael Fuller, Marianne Grauert, Matthew Huber, Jeroen Warnaar, Graham L. Williams

Department of Earth, Atmospheric, and Planetary Sciences Faculty Publications

Tectonic changes that produced a deep Tasmanian Gateway between Australia and Antarctica are widely invoked as the major mechanism for Antarctic cryosphere growth and Antarctic Circumpolar Current (ACC) development during the Eocene/Oligocene (E/O) transition (∼34–33 Ma). Ocean Drilling Program (ODP) Leg 189 recovered near-continuous marine sedimentary records across the E/O transition interval at four sites around Tasmania. These records are largely barren of calcareous microfossils but contain a rich record of siliceous- and organic-walled marine microfossils. In this study we integrate micropaleontological, sedimentological, geochemical, and paleomagnetic data from Site 1172 (East Tasman Plateau) to identify four distinct phases (A–D) in …

Eocene Circulation Of The Southern Ocean: Was Antarctica Kept Warm By Subtropical Waters?, Matthew Huber, Henk Brinkhuis, Catherine E. Stickley, Kristofer Döös, Appy Sluijs

Department of Earth, Atmospheric, and Planetary Sciences Faculty Publications

Near the Eocene's close (∼34 million years ago), the climate system underwent one of the largest shifts in Earth's history: Antarctic terrestrial ice sheets suddenly grew and ocean productivity patterns changed. Previous studies conjectured that poleward penetration of warm, subtropical currents, the East Australian Current (EAC) in particular, caused Eocene Antarctic warmth. Late Eocene opening of an ocean gateway between Australia and Antarctica was conjectured to have disrupted the EAC, cooled Antarctica, and allowed ice sheets to develop. Here we reconstruct Eocene paleoceanographic circulation in the Tasmanian region, using (1) biogeographical distributions of phytoplankton, including data from recently drilled Ocean …

Investigation Of The Relationship Between A Job-Embedded Model Of Professional Development And Reading Achievement Of Elementary School Students., Janet Faulk

Electronic Theses and Dissertations

The development of highly effective teachers is of interest to school systems because the quality of the teachers is associated with students' success. This study explored the relationship between teachers' participation in a job-embedded model of professional development and students' achievement in reading.

Teachers in the third grade and fifth grade at five different elementary schools received more than 100 hours of training. The reading achievement scores of students assigned to these teachers were compared to the scores of students whose teachers did not participate in the training. Findings in this study were mixed. Fifth-grade students whose teachers participated in …

A Comparison Of Students' And Parents' Habits And Attitudes Toward Reading In Title I And Non-Title I Schools., Judy L. Netherland

Electronic Theses and Dissertations

This study describes and compares the reading habits and attitudes of students and parents in Title I and Non-Title I schools. The study was conducted because reading is an important basic skill that all children must acquire. The information gathered can be used to help parents provide beneficial experiences for their children in reading.

The literature review addresses literature and research related to factors identified as impacting readiness for school and reading achievement in elementary-age students. Research indicates that family structure, amount of time children spend watching television, availability of learning tools, and home literacy activities may be related to …

Race Reform In The Early Twentieth Century South: The Life And Work Of Willis Duke Weatherford., Sara Trowbridge Combs

Electronic Theses and Dissertations

Willis Duke Weatherford, a liberal pioneer in Southern race reform, argued that the ethics of Christianity obligated Southerners to address the social and economic problems faced by blacks in the early twentieth century. His strategy for improving race relations centred on educating Southerners and promoting economic uplift for blacks. Weatherford advocated race reform through the Young Men's Christian Association, the Southern Sociological Congress, and other voluntary organizations. He published books, taught courses, preached sermons, organized conferences, and raised funds from Northern philanthropists. Through an analysis of Weatherford's published writings and of his papers archived at the Southern Historical Collection, the …

A Study Of General Education Assessment., Debra Leonard Scott

Electronic Theses and Dissertations

This study was a correlational investigation of the effect of student demographic characteristics, prior academic performance, college academic performance, and college status on general education achievement at a rural community college in Tennessee. The criterion variable in this study was student performance on the Academic Profile examination, a nationally normed standardized test published by the Educational Testing Service that is designed to measure academic skills in general education subject areas.

The population for this study included students at Walters State Community College located in Morristown, Tennessee, who had completed or were nearing completion of a minimum of 60 semester hours …

Kinetics And Mechanism Of The Catalysis Of The Decomposition Of Hydrogen Peroxide By Schiff Base Complexes Of Copper(Ii)., Timothy Kum Beng

Electronic Theses and Dissertations

Spectroscopic studies have been used to describe the mechanism of the decomposition of hydrogen peroxide by solutions of a dimeric Cu(II) complex of a dissymetric Schiff base, [CuSALAD]₂.H₂O, and imidazole or methyl substituted imidazoles, B, which form monomeric CuSALAD.B₂ complexes, in aqueous ethanol solvent. Freezing point depression and vapor pressure lowering studies were carried out to confirm the dimeric nature of the [CuSALAD]₂.H₂O complex that had been previously reported. The stoichiometry of the [CuSALAD]₂.H₂O-imidazole equilibrium was extensively studied pointing to a 1:4 stoichiometry. The CuSALAD.B₂ adducts …

Maldi-Tof Ms Data Processing Using Wavelets, Splines And Clustering Techniques., Shuo Chen

Electronic Theses and Dissertations

Mass Spectrometry, especially matrix assisted laser desorption/ionization (MALDI) time of flight (TOF), is emerging as a leading technique in the proteomics revolution. It can be used to find disease-related protein patterns in mixtures of proteins derived from easily obtained samples. In this paper, a novel algorithm for MALDI-TOF MS data processing is developed. The software design includes the application of splines for data smoothing and baseline correction, wavelets for adaptive denoising, multivariable statistics techniques such as clustering analysis, and signal processing techniques to evaluate the complicated biological signals. A MatLab implementation shows the processing steps consecutively including step-interval unification, adaptive …

Variable Resolution Discretization In The Joint Space, Christopher K. Monson, Kevin Seppi, David Wingate, Todd S. Peterson

Faculty Publications

We present JoSTLe, an algorithm that performs value iteration on control problems with continuous actions, allowing this useful reinforcement learning technique to be applied to problems where a priori action discretization is inadequate. The algorithm is an extension of a variable resolution technique that works for problems with continuous states and discrete actions. Results are given that indicate that JoSTLe is a promising step toward reinforcement learning in a fully continuous domain.

Illinois State University, One Hundred And Forty-Sixth Annual Commencement, December 18, 2004, Illinois State University

Commencement Programs

Normal, Illinois
Illinois State University
One Hundred and Forty-Sixth Annual Commencement
December 18, 2004

2004 Winter Boise State University Commencement Program

Commencement Programs

No abstract provided.