Digital Commons Network^™

Inverting Sediment Sound Speed Profile Using A Parameterized Geoacoustic Model: Numerical And Statistical Analysis, Chen-Fen Huang, Shih-Feng Yang, Jin-Yuan Liu

Journal of Marine Science and Technology–Taiwan

The objective of this paper is to develop and evaluate an inversion algorithm for estimating the parameters in a geoacoustic model for a marine sediment layer. The geoacoustic model employs a generalized-exponential function for sound speed profile, and an inverse-square function for density distribution. Based upon plane-wave reflection from a nonuniform sediment layer overlying an elastic seafloor, an inversion procedure is established and numerically implemented for estimating the parameters using synthetic noisecontaminated data. The sensitivity of each model parameter is first studied, and then three highly sensitive parameters in the geoacoustic model and one statistical parameter are chosen for inversion …

Synthesis Of Di- And Trisubstituted Azulenes Using A Danheiser Annulation As The Key Step: An Advanced Organic Laboratory Experiment, Rebecca M. Thomas, Kevin M. Shea

Chemistry: Faculty Publications

This three-week advanced-level organic experiment provides students with an inquiry-based approach focused on learning traditional skills such as primary literature interpretation, reaction design, flash column chromatography, and NMR analysis. Additionally, students address higher-order concepts such as the origin of azulene’s blue color, the mechanism of the Danheiser annulation (step 1), identification of an unknown reaction byproduct, and rationalization of a selective electrophilic aromatic substitution reaction (step 2). Students are initially drawn in by the fascinating color of azulene and remain engaged by the intriguing questions that naturally occur during this investigation.

First Principle Local Density Approximation Description Of The Electronic Properties Of Ferroelectric Sodium Nitrite, C. E. Ekuma, M. Jarrell, J. Moreno, L. Franklin, G. L. Zhao, J. T. Wang, D. Bagayoko

Faculty Publications

The electronic structure of the ferroelectric crystal, NaNO 2, is studied by means of first-principles, local density calculations. Our ab-initio, non-relativistic calculations employed a local density functional approximation (LDA) potential and the linear combination of atomic orbitals (LCAO). Following the Bagayoko, Zhao, Williams, method, as enhanced by Ekuma and Franklin (BZW-EF), we solved self-consistently both the Kohn-Sham equation and the equation giving the ground state charge density in terms of the wave functions of the occupied states. We found an indirect band gap of 2.83 eV, from W to R. Our calculated direct gaps are 2.90, 2.98, 3.02, 3.22, and …

2012-2013 Common Data, Morehead State University. Institutional Research & Analysis.

Office of Institutional Research & Analysis Publication Archive

2012-2013 issue of the Common Data.

An Excited System Design For The Maximum Output Of Induction Generator Based On Vector Control, Ding-Tsair Su, Ying-Shing Shiao, Koan-Yuh Chang, Wen-Jer Chang

Journal of Marine Science and Technology–Taiwan

In this paper, without using the mechanical speed regulator, we propose a scheme that can control the output power of an induction generator by controlling the excited current. To attain this goal, an inverter is designed as a current controlled source, to supply an excited current for the induction generator. Furthermore, using the dq axes theory, a vector controller is designed by a digital signal processor (DSP) for controlling the inverter which supplies excited current appropriately in accordance with the wind speed to regulate the induction generator output power. Finally, the experimental results have shown good performances of the proposed …

Faculty Senate Executive Committee Agenda, October 15, 2012, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• Honors Program Annual Report – Amber Summers-Graham for Michelle Larson
• Faculty Evaluation Committee Annual Report – Arthur Caplan for Karen Mock
• Athletic Council Report – Marie Walsh and Rob Rusnack for Ken White
• EPC Items – Larry Smith

Shallow Water Flow Modeling Using Space-Time Least-Squares Finite-Element Method, Shin-Jye Liang, Chiung-Yang Lan, Ying-Chih Chen

Journal of Marine Science and Technology–Taiwan

Various aglogrithms of least-squares finite-element methods (LSFEM) for convection-diffusion equation (CDE) and shallow-water equations (SWE) are formulated. The associated condition number of the resulting system of equations is systematically compared. It is found that condition number of the resulting system of equations depends on the choice of variables, interpolations, and size of element (∆x). In general, a better conditioned system is obtained by introducing auxiliary variable with low-order interpolation. The developed better conditioned shallow-water model is used to simulate wave propagation over a submerged bar and wave propagation past an elliptical hump. Computed results are compared with experiment data and …

The Collegian (2012-10-15), Joe Molina

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 65, No. 8

Understanding Sharing Preferences And Behavior For Mhealth Devices, Aarathi Prasad, Jacob Sorber, Timothy Stablein, Denis Anthony, David Kotz

Dartmouth Scholarship

mHealth devices offer many potential benefits to patients, health providers and others involved in the patients' healthcare. If patients are not in control of the collection and sharing of their personal health information, they will have privacy concerns even while enjoying the benefits of the devices. We investigated patients' willingness to share their personal health information, collected using mHealth devices, with their family, friends, third parties and the public. Our findings are based on a user study conducted with 41 participants. The best way to understand people's privacy concerns is to give them the opportunity to use the device and …

A Comprehensive Theoretical Study On The Rank Of The Integral Operators For Large-Scale Electrodynamic Analysis, Wenwen Chai, Dan Jiao

Department of Electrical and Computer Engineering Technical Reports

We propose an analytical approach to study the rank of an integral operator, which is valid for an arbitrarily shaped object with an arbitrary electric size. With this analytical approach, we theoretically prove that for a prescribed error bound, the minimal rank of the interaction between two separated geometry blocks in an integral-equation operator, asymptotically, is a constant for 1-D distributions of source and observation points; grows very slowly with electric size as square root of the logarithm for 2-D distributions; and scales linearly with the electric size of the block diameter for 3-D problems. We thus prove the existence …

A Presentation Of Bulgarian Viola Music, Shea Felde

News and Events (Discontinued Series)

No abstract provided.

College Of Education News, College Of Education, Georgia Southern University

College of Education: News & Publications (2003-2023)

• STEM Institute Names Affiliates, Includes 13 COE Faculty

Teaching As A Reflective Practice: Orgasmial Theory And Its Refutation, William Culver

MA TESOL Collection

An interdisciplinary study examining teaching as a reflective practice with special emphasis on expanding the underlying factors of constructing and maintaining an empowering learning environment, as well as the need for and development of “transformative integrity” as part of a proactive teaching praxis.

Deafdigest: Blue Edition, October 14, 2012, Barry Strassler

DeafDigest Blue 2012

No abstract provided.

Electron Beam Induced Luminescence Of Sio2 Optical Coatings, John R. Dennison, Amberly Evans, Gregory Wilson, Charles W. Bowers, Robert Meloy

All Physics Faculty Presentations

Optical coatings of disordered thin film SiO2/SiOx dielectric samples on reflective metal substrates exhibited cathodoluminescence under electron beam irradiation. Measurements of the absolute radiance and emission spectra as functions of incident electron energy, flux and power over a range of sample temperatures are reported. Radiance reached a saturation plateau at high incident electron power. Well below saturation radiance scaled with deposited power, that is linearly with incident power for lower-energy non-penetrating electrons and decreasing with increasing energy for penetrating radiation. Four bands were observed in spectral measurements from 300 nm to 1000 nm. Changes in peak intensity and shifts in …

Nitrogen And Copper Doped Solar Light Active Tio2 Photocatalysts For Water Decontamination, Mike Fisher, Donal Keane, Pilar Fernandez-Ibanez, John Colreavy, Stephen Hinder, Kevin Mcguigan, Suresh Pillai

Articles

A novel class of photocatalytic coating capable of degrading bacterial and chemical contaminants in the presence of visible sunlight wavelengths was produced by depositing a stable photocatalytic TiO

2 film on the internal lumen of glass bottles via a sol–gel method. This coating was prepared in either undoped form or doped with nitrogen and/or copper to produce visible light-active TiO2 films which were annealed at 600 ◦C and were characterized by Raman and X-ray photoelectron spectroscopy. The presence of doped and undoped TiO2 films was found to accelerate the degradation of methylene blue in the presence of natural sunlight, while …

Quantum Effects Of A Spacetime Varying Alpha On The Propagation Of Electrically Charged Fermions, Alejandro Ferrero, Brett David Altschul

Faculty Publications

A spacetime-varying fine structure constant α(x ^µ) could generate quantum corrections in some of the coefficients of the Lorentz-violating standard model extension (SME) associated with electrically charged fermions. The quantum corrections depend on ∂µα, the spacetime gradient of the fine structure constant. Lorentz-violating operators involving fermions arise from the one-loop corrections to the quantum electrodynamics (QED) vertex function and fermion self-energy. Both g λµν and c µν terms are generated, at O(∂_µα) and O[(∂_{µα) ² ], respectively. The g λµν terms so generated are different in the vertex and self-energy, which represents a radiatively induced violation …}

Priming Locus Of Control To Affect Performance, Alvitta Ottley, R. Jordan Crouser, Caroline Ziemkiewicz, Remco Chang

Computer Science: Faculty Publications

Recent research suggests that the personality trait Locus of Control (LOC) can be a reliable predictor of performance when learn- ing a new visualization tool. While these results are compelling and have direct implications to visualization design, the relation- ship between a user’s LOC measure and their performance is not well understood. We hypothesize that there is a dependent relation- ship between LOC and performance; specifically, a person’s orientation on the LOC scale directly influences their performance when learning new visualizations. To test this hypothesis, we conduct an experiment with 300 subjects using Amazon’s Mechanical Turk. We adapt techniques from …

Grizzly Football Game Day Program, October 13, 2012, University Of Montana--Missoula. Athletics Department

Grizzly Football Game Day Programs, 1914-2012

Program created for a Grizzly football game.

The Impact Of Covariance Misspecification In Multivariate Gaussian Mixtures On Estimation And Inference: An Application To Longitudinal Modeling, Brianna C. Heggeseth, Nicholas P. Jewell

U.C. Berkeley Division of Biostatistics Working Paper Series

Multivariate Gaussian mixtures are a class of models that provide a flexible parametric approach for the representation of heterogeneous multivariate outcomes. When the outcome is a vector of repeated measurements taken on the same subject, there is often inherent dependence between observations. However, a common covariance assumption is conditional independence---that is, given the mixture component label, the outcomes for subjects are independent. In this paper, we study, through asymptotic bias calculations and simulation, the impact of covariance misspecification in multivariate Gaussian mixtures. Although maximum likelihood estimators of regression and mixing probability parameters are not consistent under misspecification, they have little …

V. 80, Iss. 4, October 12, 2012

Archway (1946-2020)

No abstract provided.

Flyer News, Vol. 60, No. 10 (Oct. 12, 2012), University Of Dayton

Flyer News

Student-run newspaper of the University of Dayton.

Daily Eastern News: October 12, 2012, Eastern Illinois University

October

No abstract provided.

Campus Report, Vol. 40, No. 2, University Of Dayton

Campus Report

The publication for faculty and staff of the University of Dayton. Preventing sexual violence; opening multicultural doors; mission and identity planning.

An Approach To Detecting Crowd Anomalies For Entrance And Checkpoint Security, Holly Zelnio

Theses

This thesis develops an approach for detecting behavioral anomalies using tracks of pedestrians, including specified threat tracks. The application area is installation security with focus on monitoring the entrances of these installations. The approach specifically allows operator interaction to specify threats and to interactively adjust the system parameters depending on the context of the situation. This research has discovered physically meaningful features that are developed and organized in a manner so that features can be systematically added or deleted depending on the situation and operator preference. The features can be used with standard classifiers such as the one class support …

Agenda And Minutes, University Of South Florida St. Petersburg General Education Committee Meeting, October 12, 2012, University Of South Florida St. Petersburg. Faculty Senate. General Education Committee

USF St. Petersburg General Education Committee Meetings

Agenda and minutes from the October 12, 2012, meeting of the General Education Committee of the University of South Florida St. Petersburg's Faculty Senate.

The Parthenon, October 12, 2012, Shane Arrington

The Parthenon

The Parthenon, Marshall University’s student newspaper, is published by students Monday through Friday during the regular semester and weekly Thursday during the summer. The editorial staff is responsible for the news and the editorial content.

Soundings 2012-10-12, N/A N/A

Soundings

No abstract provided.

Iwu Students Honored For Their Community Involvement, Katherine Filippo '12

News and Events (Discontinued Series)

No abstract provided.

Indicators Of Hydrologic Permanence In Headwater Streams Of South Carolina, William R. Wenerick, Ken M. Fritz, Mitch S. Kostich

S.C. Water Resources Conference

2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management