Digital Commons Network^™

Estimating Norms Of Commutators [Dataset], Terry A. Loring, Freddy Vides

Math and Statistics Datasets

We find estimates on the norm of a commutator of the form [f(x),y] in terms of the norm of [x,y], assuming that x and y are bounded linear operators on Hilbert space, with x normal and with spectrum within the domain of f. In particular we discuss |[x^2,y]| and |[x^{1/2},y]| for 0leq x leq 1. For larger values of delta = |[x,y]| we can rigorous calculate the best possible upper bound |[f(x),y]| leq eta_f(delta) for many f. In other cases we have conducted numerical experiments that strongly suggest that we have in many cases found the correct formula for the …

Integrated Theoretical And Computational Approaches To Study Hydrolysis And Aggregation Of Biomolecules, Mehmet Ozbil

Open Access Dissertations

In this thesis, we have focused on the following two projects: (1) mechanisms of peptide hydrolysis, and (2) aggregation of biomolecules. A plethora of theoretical and computational techniques; quantum mechanics, molecular dynamics, and molecular docking have been employed to accomplish the goals of these projects. The selective hydrolytic cleavage of the extremely stable peptide bond (-(O=)C-NH-) of peptides and proteins by enzymes and their analogues is required in a wide range of biological, biotechnological and industrial applications. In the first project, we have elucidated the mechanisms of peptide hydrolysis by non-metallic (beta secretase (BACE)) and metallic (insulin degrading enzyme (IDE) …

Grand Valley Forum, Volume 038, Number 15, December 2, 2013, Grand Valley State University

2013-2014, Volume 38

Grand Valley Forum is Grand Valley State's faculty and staff newsletter, published from 1976 to the present.

Twelfth Century Literal Bible Commentaries: Comparing Jewish And Christian, Devorah Schoenfeld

Theology: Faculty Publications and Other Works

In the twelfth century, both Jewish and Christian Bible commentators began to emphasize literal, or historical, or contextual, approaches to interpreting scripture. These commentators wrote predominantly line‐by‐line commentaries that focused the reader's attention on linguistic questions in the biblical text. There was also a renewed interest in seeing the Bible in its own terms rather than exclusively through the lens of earlier midrashic or patristic commentaries, although those continued to play an important role. These developments happened at the same time for both Christian and Jewish scholars, who were often in conversation with each other about how to interpret the …

Holy Cross Magazine, Vol. 48, No. 1, Winter 2014, College Of The Holy Cross

Holy Cross Magazine

Syllabus: Multivariable Calculus
with Professor David B. Damiano
By Pam Reponen

Buon Natale
With expertise from Holy Cross students, Professor Sarah Stanbury and photographer/curator Margot Balboni cast new light on an ancient—and immensely popular—Italian art form that celebrates the heart of Christmas.
By Rebecca Staley ’99

Opening Doors and Beyond
As the College draws its 40th anniversary of coeducation celebrations to a close, HCM reflects on the myriad events that gave the community a chance to listen, reflect and learn.
By HCM

Meet Sam
As the academic year began, we spent a day with Sam, an eighth grader at Nativity …

What Is The Trinity?, Richard Rice

Pastor's Conferences

No abstract provided.

Formation And Analysis Of Zinc Oxide Nanoparticles And Zinc Oxide Hexagonal Prisms And Optical Analysis Of Cadmium Selenide Nanoparticles, Jared M. Hancock

Theses and Dissertations

In this dissertation, methods to synthesize ZnO are reported. First, zinc oxide nanoparticles were synthesized with small amounts of transition metal ions to create materials called dilute magnetic semiconductors (DMS). We employed a low temperature sol-gel method that produces ZnO nanoparticles of reproducible size and incorporates cobalt, nickel, and manganese ions into the nanoparticles. Conditions were controlled such that a range of amounts of Co, Ni, and Mn were incorporated. The incorporation was tracked by color changes in the white ZnO powder to blue for Co, green for Ni and yellow for Mn. XRD measurements showed the nanoparticles were on …

Methods And Metrics For Human Interaction With Bio-Inspired Robot Swarms, Sean C. Kerman

Theses and Dissertations

In this thesis we propose methods and metrics for human interaction with bio-inspired robot teams. We refine the concept of a stakeholder and demonstrate how a human can use stakeholders to lead a swarm as well as switch the swarm between different collective behaviors. We extend the human interaction metrics of interaction time and interaction effort presented in [1] to swarm systems and introduce the concept of interaction effort. These metrics allow us to understand how well the system performs under human influence. We employ systems theory to estimate these metrics, which is useful because this can be done without …

Effects Of External Radiation Fields On Line Emission—Application To Star-Forming Regions, Marios Chatzikos, Gary J. Ferland, R. J. R. Williams, Ryan Porter, P. A. M. Vanhoof

Physics and Astronomy Faculty Publications

A variety of astronomical environments contain clouds irradiated by a combination of isotropic and beamed radiation fields. For example, molecular clouds may be irradiated by the isotropic cosmic microwave background, as well as by a nearby active galactic nucleus. These radiation fields excite atoms and molecules and produce emission in different ways. We revisit the escape probability theorem and derive a novel expression that accounts for the presence of external radiation fields. We show that when the field is isotropic the escape probability is reduced relative to that in the absence of external radiation. This is in agreement with previous …

The Collegian (2013-12-02), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 66, No. 14

Volume 86, Issue 7 (2013)

Obiter Dicta

No abstract provided.

Trinity In Three Stages [Slides], John Reeve

Pastor's Conferences

No abstract provided.

Estimating Norms Of Commutators, Terry A. Loring, Freddy Vides

Branch Mathematics and Statistics Faculty and Staff Publications

We find estimates on the norm of a commutator of the form $[f(x),y]$ in terms of the norm of $[x,y]$, assuming that $x$ and $y$ are bounded linear operators on Hilbert space, with $x$ normal and with spectrum within the domain of $f$. In particular we discuss $\|[x^2,y]\|$ and $\|[x^{1/2},y]\|$ for $0\leq x \leq 1$. For larger values of $\delta = \|[x,y]\|$ we can rigorous calculate the best possible upper bound $\|[f(x),y]\| \leq \eta_f(\delta)$ for many $f$. In other cases we have conducted numerical experiments that strongly suggest that we have in many cases found the correct formula for the …

Zinc Environment In Proteins: The Flexible And Reactive Core Of Hiv-1 Ncp7 And The Inhibitory Site Of Caspase-3, A. Gerard Daniel

Theses and Dissertations

Zinc is an essential cofactor of several proteins. The roles of zinc in these proteins are classified as catalytic, structural or regulatory. Zinc present in structural sites is considered to be a chemically inert, static structural element. On the contrary, previous studies on a C2H2 type zinc finger model compound and the C3H type HIV-1 NCp7 C-terminal zinc knuckle have shown that zinc at these sites can undergo coordination sphere expansion under the influence of a Pt based electrophile. The pentacoordination observed around zinc in these experiments raises an important question: are the structural zinc motifs found in the proteins …

Lanthorn, Vol. 48, No. 29, December 2, 2013, Grand Valley State University

Volume 48, July 1, 2013 - June 2, 2014

Lanthorn is Grand Valley State's student newspaper, published from 1968 to the present.

Assessing Competing Demands And Charting A Course: A Phenomenological Study Of Advanced Placement U.S. History Teachers' Decision Making And Course Planning, Kerry Dean Poole

USF Tampa Graduate Theses and Dissertations

Florida has experienced some of the greatest growth of Advanced Placement (AP) programs in recent years and student scores on the AP exams have evolved into a highly significant metric in evaluating student proficiency and teacher and school effectiveness. Despite this growth, it is not well known how AP teachers make decisions about the content they teach, what learning activities they select, how much the AP exam influences their decision making, how they modify learning opportunities for diverse learners, and how they prepare their students for the College Board AP exam. This interpretive, phenomenological study examines the lived experiences of …

Understanding Quantitative Design: A Resource For Qualitative Researchers, Carroll E. Bronson

The Qualitative Report

Quantitative Research for the Qualitative Researcher is a concise text written for students from a qualitative orientation. It provides connections between both quantitative and qualitative research processes, and helps students understand quantitative research design more completely. It highlights the structure and purpose of research design so students understand how to create and carry out effective research projects.

Comparison Among Series Connected Auxiliary Devices For Fault Ride Through Capability Enhancement Of Wind Generator Systems, Ahmed Eid Abu Hussein

Electronic Theses and Dissertations Archive

A comparison among series connected auxiliary devices; SFCL, DVR, TCSC, and SDBR is performed in terms of fault ride through capability improvement of a fixed speed wind generator systems, controller complexity, and cost. The tested system consists of one synchronous generator and one squirrel cage induction machine based wind generator, which feed an infinite bus through a double circuit transmission line. Simulation results show that all the devices performs well under symmetrical and unsymmetrical faults, however, in spite of the DVR controller complexity it has the best performance among all devices in terms of voltage, and speed control of wind …

Model Bias Analysis Using Statistical Methods With The Nga East Ground Motion Database, Luke Philip Ogweno

Electronic Theses and Dissertations Archive

The Next Generation Attenuation (NGA) East project has an updated database for Central and Eastern North America (CENA) ground motions. I analyzed the performance of ground motion prediction equations (GMPEs) used in the United States Geological Survey (USGS) National Seismic Hazard Mapping Project (NSHMP) and other potential GMPEs used in the CENA through bias analysis, model inadequacies check using statistical tests and finally ranking the GMPEs using log likelihood (LLH), and the Euclidean Distance Based Ranking (EDR) technique. From bias analysis, Atkinson and Boore (2011) (model A08p), Atkinson and Boore (2011) (model AB06p), and Atkinson and Boore (2006) (model AB06+) …

Radiation Effects On Medical Grade Polycarbonate Urethane, Rudra Gnawali

Electronic Theses and Dissertations Archive

Polycarbonate Urethane (PCU) is a material of growing prominence for use as a biocompatible material for joint replacements. PCU has good wear properties, is easy to lubricate, and is very compatible with natural tissues. Extensive studies stil have not been performed to fully investigate the radiation effects on PCU components. Thermally stimulated luminescence (TSL) spectroscopy is a powerful tool to study radiation-induced defects in materials, while electron spin resonance (ESR) is a technique to directly detect free radicals in a material. To better investigate radiation effects on PCU materials, we have subjected PCU to X- and UV-irradiation and analyzed the …

Sample Size/Power Calculation For Stratified Case-Cohort Design And Generalized Stratified Case-Cohort Design, Wenrong Hu

Electronic Theses and Dissertations Archive

Time to event is a commonly used endpoint in epidemiological and disease prevention trials in order to study the relationship between risk factors and the endpoints. Case-cohort design that consists of a sub-cohort randomly sampled from full cohort, and all subjects with event is often applied in studies where the disease is rare and the cost of collecting the event information is high. with the non-rare events, a generalized case-cohort design is advocated in which a subset of events instead of all events is sampled. Cai and Zeng have proposed the general log-rank tests and the corresponding sample size/power formulas …

The Role Of Web-Based Social Networking On Career Success And Worker Well-Being: A Social Capital And Job Demands-Resources Approach, Jonathan David Burlison

Electronic Theses and Dissertations Archive

Through two studies, this research is some of the first to-date to test how the use of social networking websites affects worker well-being and career success. In a period of less than a decade, online social media has quickly redefined many core aspects of human relationships. In 2012, the website, Facebook, reported that one in eight people worldwide used the site weekly. Given such prevalence, this research has far reaching implications for U.S. workers and organizations. The first study (N = 238) used structural equation modeling to examine the effect of site use with coworkers on well-being through increases in …

Crash Data Study For The City Of Germantown, Tn, Jared Wayne O'Dell

Electronic Theses and Dissertations Archive

The City of Germantown has experienced a rise in intersection related crashes over the past several years. They currently must sort throught hundreds of documents to perform analysis on these intersections and the cause of increased crash rates. This thesis proposes a method of visual analysis of the 39 major intersections within the Germantown city limits. Visual mapping software is required for visual analysis. The incorporation of ArcGIS 10 is critical to the success of this project because it provides a means of quick visual analysis of intersection related crash data within the city. This provides Germantown officials with a …

Student Engagement And Reading Competence: Important Connections And The Moderating Role Of Parent Support, Tera Lynn Bradley

Electronic Theses and Dissertations Archive

Student engagement is a multidimensional construct believed to be a critical component for understanding school dropout (Christenson et al., 2008). The majority of related research has focused primarily on overt (academic and behavioral) rather than covert (psychological and cognitive) subtypes of engagement; however, there is evidence to suggest that psychological and cognitive engagement are linked to increased levels of academic achievement, overall school effort, and positive emotions. Such internal factors may be particularly relevant for enhancing reading competence, as it has been suggested that difficulties with reading can interfere with students’ motivation and engagement with learning (Guthrie & Wigfield, 2000; …

The Relationship Between Household Economic Resources And Youth Academic Performance In Ghana: A Multilevel Structural Equation Modeling, David Ansong

All Theses and Dissertations (ETDs)

The Government of Ghana recognizes the importance of education for improving the socioeconomic well-being of young Ghanaians and the development of the nation. Education currently accounts for the largest share: 31%) of Ghana's national budget: GNA, 2012). Educational reforms and investments have had remarkable success in improving access to education up to the Junior High School: JHS) level, but progression beyond JHS remains a challenge. More than half of JHS graduates do not gain admission into Senior High School: SHS) because of poor academic performance and the inability of those who qualify to afford the drastic increase in educational costs. …

Iron Isotope Cosmochemistry, Kun Wang

All Theses and Dissertations (ETDs)

Iron is the most abundant element in the Earth and the 4th most abundant in the crust and mantle; Fe is involved in every stage of planetary formation and differentiation. Iron isotope ratios are robust process tracers used to understand the origin of the Solar System, planetary formation, and differentiation processes such as the moon-forming giant impact, core-mantle segregation, and crust formation. In this dissertation, I report the most complete dataset of high-precision iron isotope compositions of a wide range of extraterrestrial samples including carbonaceous, ordinary, and enstatite chondrites, aubrites, brachinites, HED meteorites: howardites, eucrites and diogenites), martian meteorites, angrites, …

The Effects Of Processing Fluency On Restorative Environments, Andrea Ahles

All-Inclusive List of Electronic Theses and Dissertations

No abstract provided.

A Novel Broadband Equivalent Source Reconstruction Method For Broadband Radiators, Ping Li, Li (Lijun) Jun Jiang, Jun Hu, Sheng Sun

Electrical and Computer Engineering Faculty Research & Creative Works

Traditional equivalent source reconstruction methods are only operating at a single frequency point each time. However, for wide band radiators, their computation cost of the source reconstruction increases linearly with the number of frequency points. In this paper, a wide-band equivalent source reconstruction method (WB-SRM) based on the Neville-type Stoer-Bulirsch (SB) algorithm is developed. Supported by the adaptive frequency sampling (AFS) scheme, the number of required sampling data is significantly reduced, which leads to much better computational efficiency. During the AFS process, three fitting models (FM) are considered: two are 'triangle rules', and another one is 'rhombus rule'. The combination …

Casino Games And The Central Limit Theorem, Ashok Singh, Anthony F. Lucas, Rohan J. Dalpatadu, Dennis J. Murphy

UNLV Gaming Research & Review Journal

The central limit theorem, in simple terms, states that the probability distribution of the mean of a random sample, for most probability distributions, can be approximated by a normal distribution when the number of observations in the sample is 'sufficiently' large. Most applied statistics books recommend using the normal approximation for the probability distribution of the sample mean when the number of observations exceeds 30. It is commonly known in the discipline of statistics that larger samples will be needed when the underlying probability distribution is heavily skewed. However, the minimum number of samples needed for the CLT to yield …

Mcmeasuring Diplomacy: Modeling Determinants Of International Public Opinion Toward The United States, Luke A. Petach

Student Scholarship - College of Business

This paper is concerned with modeling the extent to which external factors affect political attitudes toward the United States. The data is concerned with how economic, governance, and cultural factors impact attitudes regarding the favorability of the United States in the eyes of the world, and testing the empirical implications of Thomas Friedman’s Golden Arches Theory of Conflict Prevention.

The results suggest a strong negative relationship between a country being a Muslim majority country and the favorability of the United States in that country, a positive relationship between the perceived “Voice and Accountability” of a country and the favorability of …