Digital Commons Network^™

Interannual Snow Accumulation Variability On Glaciers Derived From Repeat, Spatially Extensive Ground-Penetrating Radar Surveys, Daniel Mcgrath, Louis Sass, Shad O'Neel, Chris Mcneil, Salvatore G. Candela, Emily H. Baker, Hans-Peter Marshall

CGISS Publications and Presentations

There is significant uncertainty regarding the spatiotemporal distribution of seasonal snow on glaciers, despite being a fundamental component of glacier mass balance. To address this knowledge gap, we collected repeat, spatially extensive high-frequency ground-penetrating radar (GPR) observations on two glaciers in Alaska during the spring of 5 consecutive years. GPR measurements showed steep snow water equivalent (SWE) elevation gradients at both sites; continental Gulkana Glacier's SWE gradient averaged 115 mm 100 m⁻¹ and maritime Wolverine Glacier's gradient averaged 440 mm 100 m⁻¹ (over > 1000 m). We extrapolated GPR point observations across the glacier surface using terrain parameters derived …

A Model Free Control Based On Machine Learning For Energy Converters In An Array, Simon Thomas, Marianna Giassi, Mikael Eriksson, M Goteman, Jan Isberg, Edward Ransley, Martyn Hann, Jens Engström

School of Engineering, Computing and Mathematics

No abstract provided.

Multi-Scale Remote Sensing Of Tornado Effects, J. Arn Womble, Richard L. Wood, Mohammad Ebrahim Mohammadi

Department of Civil and Environmental Engineering: Faculty Publications

To achieve risk-based engineered structural designs that provide safety for life and property from tornadoes, sufficient knowledge of tornado wind speeds and wind flow characteristics is needed. Currently, sufficient understanding of the magnitude, frequency, and velocity structure of tornado winds remain elusive. Direct measurements of tornado winds are rare and nearly impossible to acquire, and the pursuit of in situ wind measurements can be precarious, dangerous, and even necessitating the development of safer and more reliable means to understand tornado actions. Remote-sensing technologies including satellite, aerial, lidar, and photogrammetric platforms, have demonstrated an ever-increasing efficiency for collecting, storing, organizing, and …

From Ip Goals To 3d Holes: Does Intellectual Property Law Provide A Map Or Gap In The Era Of 3d Printing?, Autumn Smith

Journal of Intellectual Property Law

No abstract provided.

Ursinus College Student-Managed Investment Fund Prospectus, Fall 2018, Paul Cottam, Shelby Boyle, Tim Carroll, Samantha Crossan, Joseph Heasley, Jake Kang, Thomas Kelly, Chris Moreno, Johnathan Myers, Steve Palis, Daan Slaats, Parker Wolf, Chenyu Yin

Ursinus Student-Managed Investment Fund Prospectus

This prospectus contains a performance summary for previous stocks and endowment funds as well as strategy and analysis for the following new stocks in the managed fund: American Woodmark Corporation, Comtech Telecommunications Corp. and LGL Group, Inc.

Pymol Plugin To Build Protein Structures Based On Natural Term Overlaps, Noah T. Paravicini

Dartmouth College Undergraduate Theses

This project is a continuation of the Grigoryan Lab's exploration of TERMs. A TERM is a tertiary structural motif, which is a fragment of a protein that includes the secondary, tertiary, and quaternary environments around a certain residue. As displayed in past publications discussing TERMs, they are a useful way of decomposing proteins into smaller components that help in understanding design and prediction of protein structures. The Grigoryan Lab developed a database that keeps track of naturally occurring overlaps between TERMs, which gives a user the information they would need to put these TERMs together into complex structures. These events …

Report Of The President / November 21, 2018, José M. Torres

President's Report

LEADERSHIP MATTERS

This report provides the Board of Trustees with information regarding Academy activities and the progress that we are making toward achieving our IMSA Impact and Outcomes Statement and Priority Outcomes. I organize the Report of the President, where appropriate, around the IMSA Impact and Outcomes document:

Three Pillars:

1. STEM Teaching and Learning
2. Operational Capacity
3. Stakeholder Engagement

One Strategy:

Strengthen Employee Engagement

Four Priorities for Academic Year 2018-2019:

• Guide the integration of UN 17 Sustainable Development Goals
• Advance equity and excellence
• Develop our international strategy
• Work on phase 1 of the innovation camp

A New American Electron Ion Collider On The Way: What It Means For Particle Accelerator Science And Duquesne Students, Courtney Boyd

D.U.Quark

No abstract provided.

Frequency Domain Decomposition Of Digital Video Containing Multiple Moving Objects, Victor M. Stone

Electrical and Computer Engineering ETDs

Motion estimation has been dominated by time domain methods such as block matching and optical flow. However, these methods have problems with multiple moving objects in the video scene, moving backgrounds, noise, and fractional pixel/frame motion. This dissertation proposes a frequency domain method (FDM) that solves these problems. The methodology introduced here addresses multiple moving objects, with or without a moving background, 3-D frequency domain decomposition of digital video as the sum of locally translational (or, in the case of background, a globally translational motion), with high noise rejection. Additionally, via a version of the chirp-Z, fractional pixel/frame motion detection …

Tio2-Based Hybrid Nanocomposites Modified By Phosphonate Molecules As Selective Pah Adsorbents, Nadine Bou Orm, Quoc An Trieu, Stephane Daniele

All Works

© 2018 by the authors. A robust sol-gel process was developed for the synthesis of surface-functionalized titania nanocrystallites bearing unsaturated groups starting from molecular heteroleptic single-source precursors. Molecules and nanomaterials were thoroughly characterized by multinuclear liquid and solid-state nuclear magnetic resonance (NMR), infra-red (FT-IR, DRIFT) spectroscopies. Nitrogen adsorption-desorption (BET), thermogravimetric (TG) and elemental analyses demonstrated the reliability and the fine tuning of the surface functionalization in terms of ratio TiO2:ligand. The as-prepared materials were used as nano-adsorbents to remove mixture of 16 polycyclic aromatic hydrocarbon (PAHs) from aqueous solutions. Adsorption kinetic experiments were carried out for 24 h in solutions …

Photospheric Radius Evolution Of Homologous Explosions, Liang-Duan Liu, Bing Zhang, Ling-Jun Wang, Zi-Gao Dai

Physics & Astronomy Faculty Research

Recent wide-field surveys discovered new types of peculiar optical transients that showed diverse behaviors of the evolution of photospheric properties. We develop a general theory of homologous explosions with constant opacity, paying special attention to the evolution of the photospheric radius R ph. We find that regardless of the density distribution profile, R ph always increases early on and decreases at late times. This result does not depend on the radiation and cooling processes inside the ejecta. The general rising/falling behavior of R ph can be used to quickly diagnose whether the source originates from a supernova-like explosion. The shape …

Boron Oxides Under Pressure: Prediction Of The Hardest Oxides, Huafeng Dong, Artem R. Oganov, Vadim V. Brazhkin, Qinggao Wang, Jin Zhang, M. Mahdi Davari Esfahani, Xiang-Feng Zhou, Fugen Wu, Qiang Zhu

Physics & Astronomy Faculty Research

We search for stable compounds of boron and oxygen at pressures from 0 to 500 GPa using the ab initio evolutionary algorithm uspex. Only two stable stoichiometries of boron oxides, namely, B6O and B2O3, are found to be stable, in good agreement with experiment. A hitherto unknown phase of B6O at ambient pressure, Cmcm−B6O, has recently been predicted by us and observed experimentally. For B2O3, we predict three previously unknown stable high-pressure phases—two of these (Cmc21 and P212121) are dynamically and mechanically stable at ambient pressure, and should be quenchable to ambient conditions. Their predicted hardnesses, reaching 33–35 GPa, make …

Graphene Used As A Lateral Force Microscopy Calibration Material In The Low-Load Non-Linear Regime, Mathias J. Boland, Jacob L. Hempel, Armin Ansary, Mohsen Nasseri, Douglas R. Strachan

Physics and Astronomy Faculty Publications

A lateral force microscopy (LFM) calibration technique utilizing a random low-profile surface is proposed that is successfully employed in the low-load non-linear frictional regime using a single layer of graphene on a supporting oxide substrate. This calibration at low loads and on low friction surfaces like graphene has the benefit of helping to limit the wear of the LFM tip during the calibration procedure. Moreover, the low-profiles of the calibration surface characteristic of these layered 2D materials, on standard polished oxide substrates, result in a nearly constant frictional, adhesive, and elastic response as the tip slides over the surface, making …

The Causes Of The Red Sequence, The Blue Cloud, The Green Valley, And The Green Mountain, Stephen A. Eales, Maarten Baes, Nathan Bourne, Malcolm Bremer, Michael J.I. Brown, Christopher Clark, David Clements, Pieter De Vis, Simon Driver, Loretta Dunne, Simon Dye, Cristina Furlanetto, Benne W. Holwerda, R. J. Ivison, L. S. Kelvin, Maritza Lara-Lopez, Lerothodi Leeuw, Jon Loveday, Steve Maddox, Michal J. Michalowski, Steven Phillipps, Aaron Robotham, Dan Smith, Matthew Smith, Elisabetta Valiante, Paul Van Der Werf, Angus Wright

Faculty and Staff Scholarship

The galaxies found in optical surveys fall in two distinct regions of a diagram of optical colour versus absolute magnitude: the red sequence and the blue cloud, with the green valley in between. We show that the galaxies found in a submillimetre survey have almost the opposite distribution in this diagram, forming a 'green mountain'. We show that these distinctive distributions follow naturally from a single, continuous, curved Galaxy Sequence in a diagram of specific star formation rate versus stellar mass, without there being the need for a separate star-forming galaxy main sequence and region of passive galaxies. The cause …

Electrostatic Excursion Sensing In A Moving Coil Transducer, Michael Smedegaard, Michael Asfaw

Defensive Publications Series

This disclosure describes an active, direct, and real-time method for the measurement of moving coil transducer, e.g., as utilized in a speaker, parameters. Two charged electrodes made of graphite are attached to the moving coil transducer. A positive electrode is attached as small ring at the base of a cone of the speaker or as a small ring around a spider of the cone. A negative electrode is disposed on a magnet of the moving coil transducer. The positive electrode moves with vibration of the coil while the negative electrode remains stationary. A supply voltage is applied to the electrodes. …

Novel Methods For Reasoning With Uncertain Hard And Soft Data Using Probabilistic And Belief Theoretic Methods, Rafael Camilo Nunez Sanchez

Open Access Dissertations

Effectively combining multiple and complementary sources of information is becoming one of the most promising paths for increased accuracy and more detailed analysis in numerous applications. Neuroscience, business analytics, military intelligence, and sociology are among the areas that could significantly benefit from properly processing diverse data sources. However, traditional methods for combining multiple sources of information are based on slow or impractical methods that rely either on vast amounts of manual processing or on suboptimal representations of data. Moreover, most of the existing methods are not well suited for dealing with the increasing amount of human-generated data. We introduce an …

The Japan University Experience Survey (Jues), Darren Matthews, Leyna Clarke

Higher education research

An overview of the Japan University Experience Survey (JUES) including its background and aims, and the ACER - Kawaijuku Group partnership. The presentation discusses the development, delivery, reporting and results of the survey, and considers Japanese and Australian UES/SES comparisons and the potential for benchmarking.

It Is Time To Kill The Economic Theory Of Suicide, Gary N. Smith

Pomona Faculty Publications and Research

A seminal paper by Hamermesh and Soss modeled suicide as a rational economic decision based on a comparison of the financial costs and benefits of staying alive. This study investigates the theoretical and empirical validity of that model.

The Relative Effects Of Forest Amount, Forest Configuration, And Urban Matrix Quality On Forest Breeding Birds, Alexandra V. Shoffner, Andrew M. Wilson, Wenwu Tang, Sara A. Gagné

Environmental Studies Faculty Publications

Urbanization modifies landscape structure in three major ways that impact avian diversity in remnant habitat: habitat amount is reduced and habitat configuration and matrix quality are altered. The relative effects of these three components of landscape structure are relatively well-studied in agricultural landscapes, but little is known about the relative effect of urban matrix quality. We addressed this gap by investigating the relative effects of forest amount, forest configuration, and matrix quality, indicated by degree of urbanization and agriculture amount, on the diversity of three guilds of forest birds using data from 13,763 point counts from Pennsylvania, USA. Forest amount …

Early Life History Response Of Reef Building Coral, Orbicella Faveolata, To Ocean Acidification And Warming, Kelly A. Pitts

HCNSO Student Theses and Dissertations

Ocean warming and acidification pose major threats to coral reef organisms. It is unknown how the early life history stages of Atlantic corals cope with the combined effects of these two global environmental stressors. Here, I investigate how these stressors influence the fertilization success, larval survivorship, and settlement of the threatened Atlantic coral, Orbicella faveolata. Gametes from O. faveolata were subjected to a factorial combination of present and future scenarios of oceanic temperatures (28.5° C and 30° C) and pH (8.2 and 8.0) predicted to occur by 2050. Results indicate that treatment type did not significantly affect fertilization success. …

Biosignature Anisotropy Modeled On Temperate Tidally Locked M-Dwarf Planets, Howard Chen, Eric T. Wolf, Ravi Kopparapu, Shawn Domagal-Goldman, Daniel E. Horton

Aerospace, Physics, and Space Science Faculty Publications

A planet’s atmospheric constituents (e.g., O2, O3, H2Ov, CO2, CH4, and N2O) can provide clues to its surface habitability, and may offer biosignature targets for remote life detection efforts. The plethora of rocky exoplanets found by recent transit surveys (e.g., the Kepler mission) indicates that potentially habitable systems orbiting K- and M-dwarf stars may have very different orbital and atmospheric characteristics than Earth. To assess the physical distribution and observational prospects of various biosignatures and habitability indicators, it is important to understand how they may change under different astrophysical and geophysical configurations, and to simulate these changes with …

Usft Prog Proposal Cob Marketing Supply Chain Management Bs-Ms 20181120, Usf Libraries

All Assessment Data

No abstract provided.

Overview Of The Kentucky Geological Survey No. 1 Hanson Aggregates Well, Carter County, Kentucky, J. Richard Bowersox, Stephen F. Greb, David C. Harris

Information Circular--KGS

The Kentucky Geological Survey drilled the No. 1 Hanson Aggregates well in northern Carter County, Ky., to assess the carbon dioxide storage capacity and confining intervals in the Middle Cambrian–Upper Ordovician section in the southern Appalachian Basin, north of the Rome Trough. The well was drilled to a total depth of 4,835 ft, penetrating the Mississippian–Middle Cambrian Paleozoic section and 120 ft of Neoproterozoic Grenville granite gneiss. Steel casing was cemented to the surface at 350 ft and 2,944 ft to isolate the deep wellbore from the near-surface aquifer and provide anchors for pressure-control equipment. Eight cores totaling 453 ft …

Diffusion And Concentration Of Solids In The Dead Zone Of A Protoplanetary Disk, Chao-Chin Yang, Mordecai-Mark Mac Low, Anders Johansen

Physics & Astronomy Faculty Research

The streaming instability is a promising mechanism to drive the formation of planetesimals in protoplanetary disks. To trigger this process, it has been argued that sedimentation of solids onto the mid-plane needs to be efficient, and therefore that a quiescent gaseous environment is required. It is often suggested that dead-zone or disk-wind structure created by non-ideal magnetohydrodynamical (MHD) effects meets this requirement. However, simulations have shown that the mid-plane of a dead zone is not completely quiescent. In order to examine the concentration of solids in such an environment, we use the local-shearing-box approximation to simulate a particlegas system with …

First-Principles Structural, Mechanical, And Thermodynamic Calculations Of The Negative Thermal Expansion Compound Zr2(Wo4)(Po4)2, Philippe F. Weck, Eunja Kim, Margaret E. Gordon, Jeffrey A. Greathouse, Remi Dingreville, Charles R. Bryan

Physics & Astronomy Faculty Research

The negative thermal expansion (NTE) material Zr2(WO4)(PO4)2 has been investigated for the first time within the framework of the density functional perturbation theory (DFPT). The structural, mechanical, and thermodynamic properties of this material have been predicted using the Perdew, Burke and Ernzerhof for solid (PBEsol) exchange–correlation functional, which showed superior accuracy over standard functionals in previous computational studies of the NTE material α-ZrW2O8. The bulk modulus calculated for Zr2(WO4)(PO4)2 using the Vinet equation of state at room temperature is K0 = 63.6 GPa, which is in close agreement with the experimental estimate of 61.3(8) at T = 296 K. The …

A New Look At T Tauri Star Forbidden Lines: Mhd-Driven Winds From The Inner Disk, Min Fang, Ilaria Pascucci, Suzan Edwards, Uma Gorti, Andrea Banzatti, Mario Flock, Patrick Hartigan, Gregory J. Herczeg, Andrea K. Dupree

Astronomy: Faculty Publications

Magnetohydrodynamic (MHD) and photoevaporative winds are thought to play an important role in the evolution and dispersal of planet-forming disks. We report the first high-resolution (∆v ∼ 6 km s−1 ) analysis of [S II] λ4068, [O I] λ5577, and [O I] λ6300 lines from a sample of 48 T Tauri stars. Following Simon et al. (2016), we decompose them into three kinematic components: a high-velocity component (HVC) associated with jets, and a low-velocity narrow (LVC-NC) and broad (LVC-BC) components. We confirm previous findings that many LVCs are blueshifted by more than 1.5 km s−1 thus most likely trace a …

Ich Kann Nicht Anders: Social Heroism As Nonselfsacrificial Practical Necessity, Bryan Smyth

Faculty and Student Publications (Open Access)

No abstract provided.

Understanding Group Dynamics Within A Classroom Using Small Group Networks And Epistemological Framing, Katarzyna E. Pomian

College of Science and Health Theses and Dissertations

In this study, we examined interactions within student groups and between groups and instructors. A deeper exploration of group dynamics helps educators to more fully understand student groups and student learning within the classroom. Our data are from a two-week summer program for incoming college freshman that focuses on helping students develop metacognitive and self-assessment tools. With the intention of using Social Network Analysis (SNA), we took the novel approach of creating network graphs from video data as opposed to surveys. However, given the isolated nature of the groups, the quantitative measures of SNA were inappropriate for our small group …

Teaching The Common Core State Standards (Ccss) Using Interdisciplinary Units: A Qualitative Case Study Of How Secondary Core Curriculum Teachers Implement The Ccss Using Interdisciplinary Units (Ius), Ella Jones Burch

Theses and Dissertations

The purpose of this qualitative case study was to explore how teachers understood and practiced using IUs to teach the core disciplines of the CCSS. The strategy of inquiry was a single case study in an urban high school where teachers of English, science, social studies, and math courses discussed IUs, and some teachers were observed using IUs. Data from public documents, teacher and student participant interviews, teacher classroom observations, a teacher survey, and field notes were analyzed and produced themes around the implementation of IUs.

The findings of this study indicate that teachers perceive how to conceptualize an IU, …

The Ecology Of Educational Attainment: Resilience Among Black High School Students, Jacqueline O. Davis

College of Science and Health Theses and Dissertations

Achievement gaps among students of color in the United States are pervasive and persistent. Identifying trajectories of resilience among Black teens is an important step toward promoting their educational attainment. This study identified risk and protective factors at the individual, family, and school levels hypothesized to influence Black high school students’ attainment. The effects of these risk (behavior problems, lack of college planning, and school problems) and protective factors (academic self-efficacy, parent involvement, and academic climate) on Black students’ educational attainment at 10-year follow-up were assessed. The sample included 2,423 Black 10th-grade students who participated in the Education Longitudinal Study …