Digital Commons Network^™

English Immersion Of Middle And High School Korean Students: Linguistic And Cultural Experience Of Relocation To The Southwest United States, Yanghee Kim

Language, Literacy, and Sociocultural Studies ETDs

With the onset of globalization, the Korean government has emphasized English education as a key issue for Korea to succeed in the global economy. The Korean public education system has faced dramatic shifts in English education; for example, English introduction at an early age. Koreans feel considerable social pressure to acquire English proficiency. This pressure has encouraged parents to send their children to English speaking countries in order for them to learn English. This study examines three Korean students who came to the U.S. with the purpose of studying English. The research questions were: how do Korean students experience English …

Exploring The Mathematical Thinking Of Bilingual Primary-Grade Students: Cgi Problem Solving From Kindergarten Through 2nd Grade, Mary Elisabeth Marshall

Language, Literacy, and Sociocultural Studies ETDs

This study explores the mathematical thinking of native Spanish-speaking, primary-grade Latina/o students learning in bilingual classrooms where the majority of their mathematics instruction has been in Spanish. Guided by sociocultural theory, which emphasizes the important connection between language and conceptual development (Mahn, 2008; Sfard, 2001; Van Oers, 2001; Zack & Graves, 2001), and the theory and methods of Cognitively Guided Instruction [CGI] (Carpenter, Ansell, Franke, Fennema & Weisbeck, 1993; Carpenter, Fennema & Franke, 1994; Carpenter, Fennema & Franke, 1996; Carpenter, Fennema, Franke, Levi & Empson, 1999; Fennema, Franke, Carpenter & Carey, 1993; Turner, Celedón-Pattichis & Marshall, 2008), data were collected …

Analysis Of Moment-Preserving Methods For Charged Particle Transport, Paul Smith

Nuclear Engineering ETDs

The simulation of electrons, protons, and other charged particles can be an expensive computation. On the one hand, the small mean free path of a charged particle makes direct simulations very costly. On the other hand, the cross sections are very singular making a deterministic calculation difficult to impossible. Nevertheless, the accurate computation of high energy charged particle densities is an important task for many engineering calculations. In this thesis, a variety of methods for computing these densities and distributions are assessed. Among these methods are the well-known Fokker-Planck and Fermi approximations. These methods are known to be particularly bad …

The Mathematics Of The Epicycloid : A Historical Journey With A Modern Perspective, Precious Andrew

Mathematics & Statistics ETDs

The role of the epicycloid in both historical and mathematical contexts was studied through readings and research. Throughout history, circles have been considered perfect and thus very important shapes. Because epicycloids are constructed by combining circular motions, their historical value is evident. Epicycloids are traced through history, with special emphasis on their use in astronomy. The epicycloid is also important from a purely mathematical perspective. The connection of the figure with Fourier series is analyzed and illustrated with various Matlab plots. Because of this connection, the power of the epicycloid as a modeling tool becomes clear. The epicycloid has also …

High Performance Damper Optimization Using Computer Simulation And Design Of Experiments, Alex Castrounis

Mathematics & Statistics ETDs

Design of experiments has become an increasingly popular tool used by racing teams in professional motorsports. A race car has literally hundreds of adjustable parameters associated with it. Specialized racing engineers are in a constant search to find the optimal combination of settings for these parameters in order to optimize a given cars speed and performance potential for a given driver and race track. Many teams employ a wide variety of computer-based simulations and actual development testing to help optimize aspects of the car's performance, which in most cases is ultimately the minimum lap time for a given race track. …

Shock Formation Properties Of Continuum And Kinetic Models, Pavlo Cherepanov

Mathematics & Statistics ETDs

Continuum mechanics and kinetic theory are two mathematical theories with fundamentally different approaches to the same physical phenomenon. Continuum mechanics together with thermodynamics treat a substance (a gas or a fluid) as a continuous medium and describes the evolution of its macro characteristics via application of the conservation laws to small packets of the substance. Kinetic theory attempts to describe the evolution of the macro parameters by treating a substance as a family of colliding objects. The number of objects must be large enough so a statistical approach can be taken. In this work we introduce a numerical scheme to …

Distributed Load Balancing Over Directed Network Topologies, Alejandro Gonzalez Ruiz

Electrical and Computer Engineering ETDs

Due to the increasing demand for high performance computing and the increasing availability of high speed networks, it has become possible to interconnect various geographically distributed computational elements (nodes) so that they can work cooperatively and obtain a performance not attainable by individual nodes. In the literature, distributing the total computation load across available processors is referred to as load balancing. This thesis considers the problem of distributed load balancing over directed graphs that are not fully connected. The impact of network topology on the stability and balance of distributed computing is studied. Furthermore, Informed Load Balancing (I-LB) is proposed. …

Optimal Spectral Reconstructions From Deterministic And Stochastic Sampling Geometries Using Compressive Sensing And Spectral Statistical Models, Oliver Jeromin

Electrical and Computer Engineering ETDs

This dissertation focuses on the development of high-quality image reconstruction methods from a limited number of Fourier samples using optimized, stochastic and deterministic sampling geometries. Two methodologies are developed: an optimal image reconstruction framework based on Compressive Sensing (CS) techniques and a new, Spectral Statistical approach based on the use of isotropic models over a dyadic partitioning of the spectrum. The proposed methods are demonstrated in applications in reconstructing fMRI and remote sensing imagery. Typically, a reduction in MRI image acquisition time is achieved by sampling K-space at a rate below the Nyquist rate. Various methods using correlation between samples, …

Destruction, Amorphization And Reactivity Of Nano-Bn Under Ball Milling, A. N. Streletskii, D. G. Permenov, B. B. Bokhonov, I. V. Kolbanev, A. V. Leonov, I. V. Berestetskaya, Kiril A. Streletzky

Physics Faculty Publications

The processes of mechanical activation of a hexagonal boron nitride (h-BN) and its reactivity upon interaction with hydrogen and water were investigated using X-ray, TEM, Microdiffraction, Dynamic Light Scattering, FTIR-spectroscopy, adsorption (BET). Initial h-BN samples were monocrystalline plates 70–80 nm thick. Mechanical treatment of h-BN is accompanied by plate splitting and formation of crystallographically oriented “rods.” The rod thickness gradually diminishes to less than 5 nm. Specific surface area of the rods (400 m2/g), is found to be equal to the outer geometrical surface of rods. As nanocrystallites form “c” parameter of h-BN increases. When nanocrystallites are less than several …

Designing And Implementing A Distributed Database For A Small Multi-Outlet Business, Joseph Grech

Regis University Student Publications (comprehensive collection)

Data is a fundamental and necessary element for businesses. During their operations they generate a certain amount of data that they need to capture, store, and later on retrieve when required. Databases provide the means to store and effectively retrieve data. Such a database can help a business improve its services, be more competitive, and ultimately increase its profits. In this paper, the system requirements of a distributed database are researched for a movie rental and sale store that has at least two outlets in different locations besides the main one. This project investigates the different stages of such a …

Presentation To Administrators Monday, August 24, 2009, George C. Wright

President Emeritus George C. Wright Speeches

No abstract provided.

An Investigation Of The Lasting Impact The C.H.A.M.P/Gear-Up Program At Rowan University Has On Selected Alumni, Jamar Morton

Theses and Dissertations

The purpose of this exploratory investigation was to determine the lasting impact of the C.H.A.M.P./GEAR-Up program alumni before the fall of 2004. The study involved 78 subjects, divided into two groups. Group one consisted of 70 subjects who participated in a survey. Group two consisted of eight subjects who participated in an interview.

The data collection instruments included a 30-item survey using the Likert scale format. The questions were arranged in a five factor grouping consisting of postsecondary exposure, identity development, social development, academic enrichment, motivational aspect, and program impact. The interview consisted of 12 questions ranging from general demographics, …

Daily Eastern News: August 26, 2009, Eastern Illinois University

August

No abstract provided.

The Spinnaker Vol. 33 No. 4, University Of North Florida

Spinnaker

Student newspaper for the UNF community.

Creps V. Idaho Dep't Of Labor Respondent's Brief Dckt. 36072

Idaho Supreme Court Records & Briefs, All

No abstract provided.

It's Happening At State: August 26, 2009

It's Happening at State

Provides summary information of news and events of interest to the faculty and staff of NDSU.

Pulsed Em Field Response Of A Thin, High-Contrast, Finely Layered Structure With Dielectric And Conductive Properties, Adrianus T. De Hoop, Lijun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

The response of a thin, high-contrast, finely layered structure with dielectric and conductive properties to an incident, pulsed, electromagnetic field is investigated theoretically. The fine layering causes the standard spatial discretization techniques to solve Maxwell's equations numerically to be practically inapplicable. To overcome this difficulty, an approximate method is proposed that models the interaction of the layer with an incident electromagnetic field via a boundary condition that expresses the in-plane conduction and contrast electric polarization currents in terms of the exciting incident field by relating the jump in the tangential component of the magnetic field strength across the layer in …

Transition To Mixing And Oscillations In A Stokesian Viscoelastic Flow, Becca Thomases, Michael Shelley

Mathematics Sciences: Faculty Publications

In seeking to understand experiments on low-Reynolds-number mixing and flow transitions in viscoelastic fluids, we simulate the dynamics of the Oldroyd-B model, with a simple background force driving the flow. We find that at small Weissenberg number, flows are "slaved" to the extensional geometry imposed by forcing. For large Weissenberg number, such solutions become unstable and transit to a structurally dissimilar state dominated by a single large vortex. This new state can show persistent oscillatory behavior with the production and destruction of smaller-scale vortices that drive mixing.

A Simple Model Of Cortical Dynamics Explains Variability And State Dependence Of Sensory Responses In Urethane-Anesthetized Auditory Cortex, Carina Curto, Shuzo Sakata, Stephan Marguet, Vladimir Itskov, Kenneth D. Harris

Department of Mathematics: Faculty Publications

The responses of neocortical cells to sensory stimuli are variable and state dependent. It has been hypothesized that intrinsic cortical dynamics play an important role in trial-to-trial variability; the precise nature of this dependence, however, is poorly understood. We show here that in auditory cortex of urethane-anesthetized rats, population responses to click stimuli can be quantitatively predicted on a trial-by-trial basis by a simple dynamical system model estimated from spontaneous activity immediately preceding stimulus presentation. Changes in cortical state correspond consistently to changes in model dynamics, reflecting a nonlinear, self-exciting system in synchronized states and an approximately linear system in …

Sju Convocation 2009, Thomas Q. Sibley

Administration Lectures and Events

No abstract provided.

Design And Optimization Of Peristaltic Micropumps Using Evolutionary Algorithms, Ravi Bhadauria

Theses and Dissertations

A design optimization based on coupled solid–fluid analysis is investigated in this work to achieve specific flow rate through a peristaltic micropump. A micropump consisting of four pneumatically actuated nozzle/diffuser shaped moving actuators on the sidewalls is considered for numerical study. These actuators are used to create pressure difference in the four pump chambers, which in turn drives the fluid through the pump in one direction. Genetic algorithms along with artificial neural networks are used for optimizing the pump geometry and the actuation frequency. A simple example with moving walls is considered for validation by developing an exact analytical solution …

The Daily Egyptian, August 25, 2009, Daily Egyptian Staff

August 2009

No abstract provided.

Report: The Illinois State University Faculty-Staff Newsletter, August 25, 2009, Illinois State University

Illinois State University Report (1966-2012)

Illinois State University bi-weekly employee newsletter.

Doubt And The Values Of An Ignorance-Based World View For Restoration: Coastal Louisiana Wetlands, R. Eugene Turner

Faculty Publications

Embracing doubt, a signature strength of science, is an essential core component of an ignorance-based-world view (IBWV) that assumes the areas of certainty are small relative to the large field of ignorance. The contrasting knowledge-based world view (KBWV) assumes that small and mostly insignificant knowledge gaps exist. When the KBWV is combined with a sense of urgency to “do something,” then the intellectual landscape is flattened, the introduction of new ideas is impeded, monitoring and adaptive management is marginalized, risky behaviors continue, and social learning is restricted. The history of three coastal Louisiana land-uses (agricultural impoundment, marsh management, and dredging) …

Detection Of Extended Vhe Gamma Ray Emission From G106.3+2.7 With Veritas, P. T. Reynolds, Et Al

Physical Sciences Publications

We report the detection of very-high-energy (VHE) gamma-ray emission from supernova remnant (SNR) G106.3+2.7. Observations performed in 2008 with the VERITAS atmospheric Cherenkov gamma-ray telescope resolve extended emission overlapping the elongated radio SNR. The 7.3σ (pre-trials) detection has a full angular extent of roughly 06 by 04. Most notably, the centroid of the VHE emission is centered near the peak of the coincident 12CO (J = 1-0) emission, 04 away from the pulsar PSR J2229+6114, situated at the northern end of the SNR. Evidently the current-epoch particles from the pulsar wind nebula are not participating in the gamma-ray production. …

Search For Gravitational Waves From Low Mass Compact Binary Coalescence In 186 Days Of Ligo's Fifth Science Run, B. P. Abbott, R. Abbott, R. Adhikari, P. Ajith, B. Allen, G. Allen, R. S. Amin, S. B. Anderson, W. G. Anderson, M. A. Arain, M. Araya, H. Armandula, P. Armor, Y. Aso, S. Aston, P. Aufmuth, C. Aulbert, S. Babak, P. Baker, S. Ballmer, C. Barker, D. Barker, B. Barr, P. Barriga, L. Barsotti, M. A. Barton, I. Bartos, R. Bassiri, M. Bastarrika, B. Behnke, M. Benacquista, Tiffany Z. Summerscales

Faculty Publications

We report on a search for gravitational waves from coalescing compact binaries, of total mass between 2 and 35M, using LIGO observations between November 14, 2006 and May 18, 2007. No gravitational-wave signals were detected. We report upper limits on the rate of compact binary coalescence as a function of total mass. The LIGO cumulative 90%-confidence rate upper limits of the binary coalescence of neutron stars, black holes and black hole-neutron star systems are 1.4×10-2, 7.3×10-4 and 3.6×10-3yr-1L10-1, respectively, where L10 is 1010 times the blue solar luminosity. © 2009 The American Physical Society.

Faculty Senate Summarized Minutes, 8/25/2009, Unm Faculty Senate

Faculty Senate Meeting Minutes, 1920 - 2013

No abstract provided.

Combinational Mixtures Of Multiparameter Distributions, Valeria Edefonti, Giovanni Parmigiani

Johns Hopkins University, Dept. of Biostatistics Working Papers

We introduce combinatorial mixtures - a flexible class of models for inference on mixture distributions whose component have multidimensional parameters. The key idea is to allow each element of the component-specific parameter vectors to be shared by a subset of other components. This approach allows for mixtures that range from very flexible to very parsimonious, and unifies inference on component-specific parameters with inference on the number of components. We develop Bayesian inference and computation approaches for this class of distributions, and illustrate them in an application. This work was originally motivated by the analysis of cancer subtypes: in terms of …

August 24, 2009, James Madison University

The Breeze, 2000-2009

The Breeze is the student newspaper of James Madison University in Harrisonburg, Virginia.

The Utah Statesman, August 24, 2009, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.