Digital Commons Network^™

Extensions Of The Walden-Wintle Model Of Charge Transport In Disordered Materials For Charge Injection With Electron Beams, Jr Dennison, Greg Wilson, Alec Sim, Jodie C. Gillespie

Presentations

No abstract provided.

Time Dependent Conductivity Of Low Density Polyethylene, Phillip Lundgreen, Justin Dekany, Jr Dennison

Posters

The time independent conductivity of Low Density Polyethylene (LDPE) is useful in determining rates of conductivity based on intrinsic properties of a material. A simple, yet elegant, parallel plate capacitor setup allowed for data collection which extended beyond 97 hours. Through precise measurements the different stages of charge distribution were determined to the level of 3 10-16 A. Through the use of data analysis programs, the dielectric constant and dispersion constant were both determined for LDPE and then compared with a simple, macroscopic, first-principles model to determine the quality of the fit.

Functionalizing Carbon Nanotube Forests With 1,5-Diaminoaphthalene, Ben Pound, T. -C. Shen

Browse All Undergraduate research

No abstract provided.

Usu Alumnus Reacts To Winning Nobel Prize In Economics, Usu Jon M. Huntsman School Of Business, Kevin Opsahl

Jon M. Huntsman School of Business News Collection

Editor's note: Alum Dr. Lars Peter Hansen, '74, who studied mathematics, political science, and economics, at USU was named as this year's Nobel Laureate in Economics. Now a professor at the University of Chicago, Hansen shares the award with two other eminent economists, Eugene Fama, also of Chicago, and Robert Shiller, of Yale. This Herald Journal clip is just one of many stories that ran about Dr. Hansen online and in print publications across the country.

Pre-Breakdown Arcing In Dielectrics Under Electric Field Stress, Allen Andersen, Jr Dennison

Graduate Student Presentations

No abstract provided.

Satellite And Ground-Based Measurements Of Mesospheric Temperature Variability Over Cerro Pachon, Chile (30.3° S), Jonathan Pugmire, Michael J. Taylor, Yucheng Zhao, P. D. Pautet, J. M. Russell

Graduate Student Posters

— Observations of mesospheric OH (6,2) rotational temperatures by the Utah State University Mesospheric Temperature Mapper (MTM) located at the Andes Lidar Observatory, Cerro Pachon, Chile (30.3◦ S, 70.7◦ W) reveal a large range of nightly variations induced by atmospheric gravity waves and tides, as well as strong seasonal oscillations. This study investigates MTM temperature variability over the past 4 years comprising over 800 nights of high-quality data and compares the results with MTM measurements from Maui, Hawaii (2001-2005) and coincident mesospheric temperature measurement by the SABER instrument on the NASA TIMED satellite.

Winter Climatology Of Short-Period Polar Mesospheric Gravity Waves Observed Over Poker Flat Research Range, Alaska (65 O N, 147 O W), Michael Negale, Kim Nielsen, Michael J. Taylor, Dominique Pautet

Physics Student Research

Short-period gravity wave observations over the Arctic region are few and their impact on the Arctic mesosphere lower thermosphere region via momentum deposition is of high interest. The Mesospheric Airglow Imaging and Dynamics project was initiated in January 2011 to investigate the presence and dynamics of these waves over the interior of Alaska. Observations were made from Poker Flat Research Range (PFRR) using an all-sky imager. This site provides an exceptional opportunity to establish a long-term climatology of short-period gravity waves in the Arctic Region. We present summary measurements of prominent gravity waves over two consecutive winters and compare their …

Atomic Oxygen Modification Of The Nanodielectric Surface Composition Of Carbon-Loaded Polyimide Composites, Kelby T. Peterson, Jr Dennison

Presentations

No abstract provided.

Diverse Light Emissions From Epoxy Due To Energetic Electron Bombardment, Justin Christensen, Jr Dennison, Justin Dekaney

Posters

Dielectric materials subjected to energetic electron fluxes can emit light in several forms. We have observed three distinct types of emissions: (i) short-duration (<1 ms), high-intensity electrostatic discharge (ESD) or “arc” events; (ii) intermediate-duration, high-intensity events which begin with a bright arc followed by an exponential decay of intensity (~10 to 100 sec decay constant), termed “flares”; and (iii) long-duration, low-intensity emission, or cathodoluminescence, that continues as long as the electron flux is on. These events were studied for bulk samples of bisphenol/amine epoxy, using an electron gun with varying current densities (0.3 to 5 nA-cm^-2) and energies (12 to 40 keV) in a high vacuum chamber. Light emitted from the sample was measured with high-sensitivity visible and near-infrared video cameras. We present results of the spatial and temporal extent for each type of event. We also discuss how absolute spectral radiance and rates for each type of these events are dependent on incident electron current density, energy, and power density and on material type, temperature, and thickness. Applications of …

Atomic Oxygen Modification Of The Nanodielectric Surface Composition Of Carbon-Loaded Polyimide Composites, Kelby T. Peterson, Jr Dennison

Posters

Black Kapton is a nanodielectric composite of carbon particles (100-500 nm) embedded in an insulating polyimide polymer matrix (100-5000 nm depth). Analysis of this nanodielectric composite has been done via optical imaging, scanning electron microscopy, and energy- dispersive x-ray analysis in order to gain insight into its nanodielectric properties. The insulating polyimide is known to be inert and impervious to strong bases and acids, but is affected by atomic oxygen exposure. We have observed changes in the surface structure and relative carbon- polymer concentrations in MISSE-6 samples that were exposed to the low earth orbit environment for 18 months outside …

Faculty Senate Meeting Minutes Oct 18, 2013, A-State Faculty Senate

Faculty Senate Minutes

No abstract provided.

Emu Today, October 18, 2013, Eastern Michigan University

EMU Today

No abstract provided.

Progress Towards Real-Time Radiation Measurements On Aircraft, L. Duane Bell, W. Kent Tobiska, Robert W. Schunk

Physics Student Research

The Space Weather Center (SWC) at Utah State University has created a team to deploy and obtain radiation effective dose rate data from dosimeters flown on commercial aircraft. The objective is to improve the accuracy of radiation dose and dose rate estimates for commercial aviation flight crews. There are two general sources of radiation exposure for flight crews: (1) the ever-present, background galactic cosmic rays (GCR), which originate outside the solar system, and (2) the solar energetic particle (SEP) events (or solar cosmic rays), which are associated with solar flares and coronal mass ejections lasting for several hours to days …

Conformational Response To Solvent Interaction And Temperature Of A Protein (Histone H3.1) By A Multi-Grained Monte Carlo Simulation, Ras B. Pandey, Barry L. Farmer

Faculty Publications

Interaction with the solvent plays a critical role in modulating the structure and dynamics of a protein. Because of the heterogeneity of the interaction strength, it is difficult to identify multi-scale structural response. Using a coarse-grained Monte Carlo approach, we study the structure and dynamics of a protein (H3.1) in effective solvent media. The structural response is examined as a function of the solvent-residue interaction strength (based on hydropathy index) in a range of temperatures (spanning low to high) involving a knowledge-based (Miyazawa-Jernigan(MJ)) residue-residue interaction. The protein relaxes rapidly from an initial random configuration into a quasi-static structure at low …

Catalytic Methyl Transfer From Dimethylcarbonate To Carboxylic Acids, Yuan Ji, Jessica Sweeney, Jillian Zoglio, David J. Gorin

Chemistry: Faculty Publications

Although methylation reactions are commonplace, currently used reagents are hazardous, toxic, and/or unstable. Dimethylcarbonate has been put forth as an inexpensive, nontoxic, and “green” potential methylating reagent. Herein we report a general, base-catalyzed methyl transfer from dimethylcarbonate to carboxylic acids. High selectivity for esterification is observed even in the presence of unprotected phenols, and the mild reaction conditions enable conservation of stereochemistry at epimerizable stereocenters. Isotope-labeling studies suggest a mechanism proceeding by direct methyl transfer from dimethylcarbonate to the substrate.

Multiplicative Zagreb Indices Of K-Trees, Shaohui Wang

Combinatorics Seminar

Let G be a graph with vetex set V(G) and edge set E(G). The rst generalized multiplicative Zagreb index of G is 1c (G) = v V(G) d(v)c, for a real number c > 0, and the second multiplicative Zagreb index is 2 (G) = uv E(G) d(u)d(v), where d(u)d(v) are the degrees of the vertices of uv. The multiplicative Zagreb indices have been the focus of considerable research in computational chemistry dating back to Narumi and Katayama in 1980s. In this talk, we will generalize Narumi-Katayama index and the rst multicative index, where c = 12, respectively, and investigate the …

Chimes: October 18, 2013, Calvin College

Chimes

Budget gap shrinks 33 percent after first round of cuts by Ryan Struyk

Talks continue on RA work load by Ben Rietema

GRPD joins prolonged investigation after 17 bikes stolen from Calvin by Loukas Peterson

Dining services cuts weekend hot breakfasts, bonus bucks, B-quiv by Leah Jonker

CRC joins with Michigan farmers to fight for immigrants by Anna Delph

A night of worship by Nick Keeley

Calvin takes MIAA lead by Brian Exner

A Topics Analysis Model For Health Insurance Claims, Jared Anthony Webb

Theses and Dissertations

Mathematical probability has a rich theory and powerful applications. Of particular note is the Markov chain Monte Carlo (MCMC) method for sampling from high dimensional distributions that may not admit a naive analysis. We develop the theory of the MCMC method from first principles and prove its relevance. We also define a Bayesian hierarchical model for generating data. By understanding how data are generated we may infer hidden structure about these models. We use a specific MCMC method called a Gibbs' sampler to discover topic distributions in a hierarchical Bayesian model called Topics Over Time. We propose an innovative use …

The Evolving Role Of The Corporate Counsel: How Information Technology Is Reinventing Legal Practice

Campbell Law Review

No abstract provided.

Characterization Of Polylactic Acid Films For Food Packaging As Affected By Dielectric Barrier Discharge Atmospheric Plasma, Shashi Pankaj, Luke O'Neill, N. Misra, Paula Bourke

Articles

Dielectric barrier discharge (DBD) air plasma is a novel technique for in-package decontamination of food, but it has not been yet applied to the packaging material. Characterization of commercial polylactic acid (PLA) films was done after in-package DBD plasma treatment at different voltage and treatment time to evaluate its suitability as food packaging material. DBD plasma increased the roughness of PLA film mainly at the site in contact with high voltage electrode at both the voltage levels of 70 and 80 kV. DBD plasma treatments did not induce any change in the glass transition temperature, but significant increase in the …

E-Learning Tools For Andragogy: A Scale Model Of Technology-Based Active Learning, Ying Wang, Kai S. Koong, Jun Sun

Information Systems Faculty Publications

Andragogy is an educational philosophy on how to facilitate active learning for adult students. It requires instructors to engage students in various learning activities, including problem solving, essay writing, discussions, group projects, and so on. The challenge is how to facilitate student participation and assess learning outcomes. The emergence of e-learning tools, such as Discussion Board, Wiki, Blogs, and Wimba provide technical support for the new learning approach. Based on the review of information systems and education literature, this study develops a taxonomy of e-learning tools. In particular, it proposes a scale model based on the premise that e-learning tools …

Signal Processing Of Electroencephalogram For The Detection Of Attentiveness Towards Short Training Videos, Paul Nussbaum

Theses and Dissertations

This research has developed a novel method which uses an easy to deploy single dry electrode wireless electroencephalogram (EEG) collection device as an input to an automated system that measures indicators of a participant’s attentiveness while they are watching a short training video. The results are promising, including 85% or better accuracy in identifying whether a participant is watching a segment of video from a boring scene or lecture, versus a segment of video from an attentiveness inducing active lesson or memory quiz. In addition, the final system produces an ensemble average of attentiveness across many participants, pinpointing areas in …

Keynote: The Transmission Of Information: An “Awful Deformation” Of What Communication Really Is – John Shotter, John Shotter

Proceedings of the New York State Communication Association

It is easy to think of communication as being primarily to do with the transmission of information, with the communication of facts, of intelligence, of things people want to know about—a view given scientific expression long ago by Shannon and Weaver (1949). The taken-for-granted background to this view being the Cartesian assumptions of a mechanical world of separate, identifiable, interacting entities in motion according to discoverable laws. Everything changes, however, once we switch to a view of communication as occurring within a ceaseless, indivisible flow of entwined strands of spontaneously responsive, expressive, living, bodily activity—a view adopted by all those …

Russian Pitch-Class Set Analysis And The Music Of Webern, Philip A. Ewell

Gamut: Online Journal of the Music Theory Society of the Mid-Atlantic

Prompted by a live performance of Webern’s Op. 6 in Moscow, in 1965, brother and sister Yuri Kholopov and Valentina Kholopova began to analyze the music of Webern; from 1965 to 1970 they wrote two books thereon. Working from scores and a few writings by Europeans (i.e., Stockhausen, Pousseur, Metzger, Kolneder, and Karkoschka), Valentina Kholopova devised a system of pc set analysis, which Yuri later named “hemitonicism.” She first presented her findings to the Soviet “Union of Composers” in the early 1970s, and then published a follow-up article in 1973. In the present essay, the author explicates this important development …

Set On Notes: Palindromes And Other Symmetry In The Music Of Viktor Ullmann, Rachel Bergman

Gamut: Online Journal of the Music Theory Society of the Mid-Atlantic

Viktor Ullmann (1898–1944), a pupil of Arnold Schoenberg, not only studied with the Viennese master but also developed significant personal and professional relationships with many of those closely associated with him, most notably Alexander Zemlinsky and Alban Berg. Evidence of the far-reaching influence of Schoenberg and his circle is found in Ullmann’s creation of coherence and structure through symmetry—a primary unifying feature throughout his music. While he grappled with issues of tonality and atonality, varying the extent to which he integrated the two, he remained consistent in using symmetry throughout his ouevre. We see symmetry playing a role in …

The Fierce Green Fire: Vol. 4 Issue 7, Wofford College Environmental Studies Program

The Fierce Green Fire

No abstract provided.

The Santa Clara, 2013-10-17, Santa Clara University

The Santa Clara

No abstract provided.

Hst Hot-Jupiter Transmission Spectral Survey: Evidence For Aerosols And Lack Of Tio In The Atmosphere Of Wasp-12b, David K. Sing, Alain Lecavelier Des Etangs, Jonathan J. Fortney, Adam Burrows, Frederic Pont, Hannah R. Wakeford, Gilda E. Ballester, Nikolay Nikolov, Gregory W. Henry, Suzanne Aigrain, Drake Deming, Thomas M. Evans, Neale P. Gibson, Catherine M. Huitson, Heather Knutson, Adam P. Showman, Alfred Vidal-Madjar, Paul A. Wilson, Michael H. Williamson, Kevin J. Zahnle

Information Systems and Engineering Management Research Publications

We present Hubble Space Telescope (HST) optical transmission spectra of the transiting hot-Jupiter WASP-12b, taken with the Space Telescope Imaging Spectrograph instrument. The resulting spectra cover the range 2900–10 300 Å which we combined with archival Wide Field Camera 3 spectra and Spitzer photometry to cover the full optical to infrared wavelength regions. With high spatial resolution, we are able to resolve WASP-12A's stellar companion in both our images and spectra, revealing that the companion is in fact a close binary M0V pair, with the three stars forming a triple-star configuration. We derive refined physical parameters of the WASP-12 system, …

Western News, Oct. 17, 2013, Western Michigan University

Western News (1972-2018)

Story highlights: Board OKs $1 million for alumni center; Coming year will fundamentally change WMU, Dunn says; Zhang Legacy Collections Center dedication slated; Upjohn Center takes top international honor for map product; On Campus with Adrienne Fraaza.

Latest Nobel Prize Reflects How Economics Works — And What Economists Don’T Know, Louis D. Johnston

Economics Faculty Publications

No abstract provided.