Digital Commons Network^™

Effect Of Lateral Outflow On Three-Dimensional Flow Structure In A River Delta, M. Kifayath Chowdhury, Kory M. Konsoer, Matthew Hiatt

Faculty Publications

Spatial and temporal patterns in three-dimensional flow structure are linked to channel processes and morphology in many environments. However, there is not yet an understanding of how the flow structure is influenced by channelized and gradually distributed lateral outflows that are often prevalent in river deltas. This study presents an analysis of three-dimensional flow structure data collected from Wax Lake Delta, a naturally developing river-dominated delta in the northern Gulf of Mexico. Three hydrographic surveys were conducted using a boat-mounted acoustic Doppler current profiler at two sites: a channelized outflow zone and a distributary channel experiencing unchannelized lateral outflow. The …

Accounting For R&D: Evidence And Implications*, Thomas G. Canace, Scott Jackson

Faculty Publications

Accounting rules require that certain R&D expenditures be capitalized, but academic research often states that all R&D expenditures must be immediately expensed. An accurate understanding of actual R&D accounting practices is critical because that understanding influences research questions and design choices. To examine the competing R&D accounting perspectives, we survey 184 experienced financial officers. Our survey reveals that R&D capitalization is common and extensive in practice. Over 90% of respondents indicate that their firm capitalizes at least some R&D expenditures, and our evidence shows that about 22% of annual R&D expenditures are capitalized. When facing an earnings shortfall, respondents indicate …

Ground-Penetrating Radar Detection Of Hydrologic Connectivity In A Covered Karstic Setting, Joseph P. Honings, Carol M. Wicks, Steven T. Brantley

Faculty Publications

Increasing demand for water for agricultural use within the Dougherty Plain of the southeastern United States has depleted surface water bodies. In karstic landscapes, such as the Dougherty Plain in southwest Georgia where the linkages between surface and ground waters are close, there is a need to understand the physical characteristics of the subsurface that allow these close linkages. Having a better understanding of the subsurface characteristics will aid numerical modeling efforts that underpin policy decisions and economic analyses. Two common features on this karstic landscape are draws and geographically isolated wetlands. Using LiDAR, aerial imagery, and ground-penetrating radar, this …

On The Spatial Variability Of The Mesoscale Sea Surface Height Wavenumber Spectra In The Atlantic Ocean, Xiaobiao Xu, Eric P. Chassignet, Alan J. Wallcraft, Brian K. Arbic, Maarten C. Buijsman, Miguel Solano

Faculty Publications

The wavenumber spectral slope of sea surface height (SSH) computed within the mesoscale range (70–250 km) from satellite altimetry exhibits a large spatial variability which, until now, has not been reproduced in numerical ocean models. This study documents the impacts of including internal tides, high-resolution bathymetry, and high-frequency atmospheric variability on the SSH wavenumber spectra in the Atlantic Ocean, using a series of 1/50° North and equatorial Atlantic simulations with a realistic representation of barotropic/baroclinic tides and mesoscale-to-submesoscale variability. The results show that the inclusion of internal tides does increase high frequency SSH variability (with clear peaks near 120 and …

Near-Surface Oceanic Kinetic Energy Distributions From Drifter Observations And Numerical Models, Brian K. Arbic, Shanee Elipot, Jonathan M. Brasch, Dimitris Menemenlis, Aurélien L. Ponte, Jay F. Shriver, Edward D. Zaron, Matthew H. Alford, Maarten C. Buijsman, Ryan Abernathey, Daniel Garcia, Lingxiao Guan, Paige E. Martin, Arin D. Nelson

Faculty Publications

The geographical variability, frequency content, and vertical structure of near-surface oceanic kinetic energy (KE) are important for air-sea interaction, marine ecosystems, operational oceanography, pollutant tracking, and interpreting remotely sensed velocity measurements. Here, KE in high-resolution global simulations (HYbrid Coordinate Ocean Model; HYCOM, and Massachusetts Institute of Technology general circulation model; MITgcm), at the sea surface (0 m) and at 15 m, are compared with KE from undrogued and drogued surface drifters, respectively. Global maps and zonal averages are computed for low-frequency (

Instrumental Music Education In Rural North Carolina: A Descriptive Study, Melody Causby, Catheryn Shaw Foster

Faculty Publications

The purpose of this study was to investigate secondary instrumental music education in rural North Carolina. This descriptive study investigated the experiences, attitudes, beliefs, and perceptions that rural instrumental music educators (n = 55) held about their schools, students, and communities. Furthermore, the researchers examined how participants defined success for their programs, what challenges and rewards they experienced in their positions, and what skills they considered most important for themselves as teachers.

Results indicate that although rural music educators find the musical aspects of their positions rewarding, they believe that their nonmusical skills related to teaching, such as developing …

A Guide To Design The Trajectory Of Active Particles: From Fundamentals To Applications, Ahmed Al Harraq, Mustapha Bello, Bhuvnesh Bharti

Faculty Publications

Active particles convert external energy into motility, displaying a variety of dynamical features. Recent progress in the field has marked a shift in focus from understanding the origin and sources of active motion to controlling the dynamics and trajectory of individual microswimmers. This review explores the advancements made in a two-fold perspective—the role of particle design and that of external factors. Our main goal is to highlight the guiding principles, which determine active particle trajectory. These include, on the one hand, the role of the morphology of active particles and their assemblies in driving translation, rotation, and corresponding coupling between …

Genomic Basis For Individual Differences In Susceptibility To The Neurotoxic Effects Of Diesel Exhaust, Alexandra Noël, David G. Ashbrook, Fuyi Xu, Stephania A. Cormier, Lu Lu, James P. O’Callaghan, Shyam K. Menon, Wenyuan Zhao, Arthur L. Penn, Byron C. Jones

Faculty Publications

Air pollution is a known environmental health hazard. A major source of air pollution includes diesel exhaust (DE). Initially, research on DE focused on respiratory morbidities; however, more recently, exposures to DE have been associated with neurological developmental disorders and neurodegeneration. In this study, we investigated the effects of sub-chronic inhalation exposure to DE on neuroinflammatory markers in two inbred mouse strains and both sexes, including whole transcriptome examination of the medial prefrontal cortex. We exposed aged male and female C57BL/6J (B6) and DBA/2J (D2) mice to DE, which was cooled and diluted with HEPA-filtered compressed air for 2 h …

Design Of Crack-Free Laser Additive Manufactured Inconel 939 Alloy Driven By Computational Thermodynamics Method, Congyuan Zeng, Huan Ding, Uttam Bhandari, S. M. Guo

Faculty Publications

This paper examined the effect of Si addition on the cracking resistance of Inconel 939 alloy after laser additive manufacturing (AM) process. With the help of CALculation of PHAse Diagrams (CALPHAD) software Thermo-Calc, the amounts of specific elements (C, B, and Zr) in liquid phase during solidification, cracking susceptibility coefficients (CSC) and cracking criterion based on |dT/dfs1/2| values (T: solidification temperature, fs: mass fraction of solid during solidification) were evaluated as the indicators for composition optimization. It was found that CSC together with |dT/dfs1/2| values provided a better prediction for cracking resistance. Graphical abstract: [Figure not available: see fulltext.].

Rapid Evaluation And Optimization Of Carbon Dioxide-Enhanced Oil Recovery Using Reduced-Physics Proxy Models, Watheq J. Al-Mudhafar, Dandina N. Rao, Sanjay Srinivasan, Hung Vo Thanh, Erfan M. Al Lawe

Faculty Publications

The carbon dioxide (CO2) injection in oil reservoirs is a promising enhanced oil recovery method to reduce carbon emissions into the atmosphere. The CO2 injection simulation and optimization require a large computation time, especially in real large-scale oil reservoirs. This paper integrates experimental design and machine learning to construct a reduced-physics surrogate model alternative to the complex reservoir simulator. This surrogate model was used to evaluate and optimize the CO2-assisted gravity drainage (CO2-GAGD) process, applied to a clastic reservoir in the Rumaila oil field. In the GAGD process optimization, five operational decision parameters controlling the production and injection activities were …

Innovation Transition Success: Practice Doesn't Make Perfect, Kaitlyn Ryan, Amy M. Cox, Ethan Blake, Clay Koschnick, Alfred E. Thal Jr.

Faculty Publications

The authors of this research examine and evaluate organizational factors associated with commercialization under the Air Force Small Business Innovation Research (SBIR) program. Their objective is to improve return on investment. The data set used was the SBIR Phase II program data set, which contains information on 433 SBIR topics with closed contracts reported during Department of Defense (DoD) fiscal years (FYs) 2015 to 2018. Each data point contained characteristics of the topic, including commercialization. Military capability or topic areas were hypothesized to have varying commercialization rates. Incumbency was theorized to be a characteristic of successful programs, while increased company …

Incentivizing Innovation: Promoting Technical Competency To Win Future Wars., James E. Bevins

Faculty Publications

Despite numerous studies and initiatives, most current Air Force efforts to add science and technology talent have been insufficient. This begs the question: How does the Air Force incentivize and promote the necessary technical competence required to win future competition, conflicts, and wars? Several key initiatives, grounded in behavioral economics, can incentivize innovation and pursue science and technology expertise. Developed in the context of peer adversaries’ actions; global trends in technology, competition, and conflict; and the global competition for science and technology talent, these recommendations have the potential to reform institutional culture and unleash the creativity and talent of the …

Contested Agile Combat Employment: A Site-Selection Methodology, Zachary T. Moer, Christopher M. Chini, Peter P. Feng, Steven J. Schuldt

Faculty Publications

Numerous factors complicate ACE site-selection decisions including peer-to-peer threats, complex geopolitics, and resource requirements. The proposed site-selection framework identifies existing airports best suited for strategic utilization to support combatant commands as they optimize agile combat employment infrastructure.

Oxygen Vacancies In Lib3O5 Crystals And Their Role In Nonlinear Absorption, Brian C. Holloway, Christopher A. Lenyk, Timothy D. Gustafson, Nancy C. Giles

Faculty Publications

LiB₃O₅ (LBO) crystals are used to generate the second, third, and fourth harmonics of near-infrared solid-state lasers. At high power levels, the material’s performance is adversely affected by nonlinear absorption. We show that as-grown crystals contain oxygen and lithium vacancies. Transient absorption bands are formed when these intrinsic defects serve as traps for “free” electrons and holes created by x rays or by three- and four-photon absorption processes. Trapped electrons introduce a band near 300 nm and trapped holes produce bands in the 500-600 nm region. Electron paramagnetic resonance (EPR) is used to identify and characterize the …

Same Purpose, New Approach: A Case Study Of The North Dakota Bismarck Mission Using Social Media During Covid-19, Scott L. Howell

Faculty Publications

This is the story of how one mission in The Church of Jesus Christ of Latter-day Saints (Church) adapted its approach, but not its purpose, to invite all to come unto Jesus Christ during the first 16 months of the COVID-19 pandemic (March 2020 to July 2021). The North Dakota Bismarck Mission (NDBM hereafter) covers all or parts of the states of North and South Dakota, Minnesota, Montana, and Nebraska, and, like the other 404 missions¹ throughout the world, traditional approaches to missionary work were significantly disrupted by the effects of COVID-19. No longer were missionaries able to find and …

Reliability Study Of A New Electromechanical Device Designed To Measure The Relative Dorsal Mobility Of The First Ray Of The Foot, Philippe Passeraub

Faculty Publications

Introduction: A new electromechanical instrument has been developed to measure relative dorsal mobility of the first ray in an objective and reliable way by simulating ground reaction forces during gait. This device equally applies a standardized, electronically controlled, and precise force under the first metatarsal head M1 as well as under the heads of the lesser metatarsals M2 to M5. The relative dorsal mobility between these two bearings is then measured. The purpose of this study is to assess the intra- and inter-examiners reliabilities of the measurements obtained with this device. Methods: The protocol included two examiners and 36 feet …

Transitions Between Tobacco Products: Correlates Of Changes In Cigarette Smoking And E-Cigarette Use Among Exclusive Adult Smokers And Dual Users In Mexico, Katia Gallegos-Carrillo, Inti Barrientos-Gutiérrez, Edna Arillo-Santillán, Rosibel Rodríguez-Bolaños, Lizeth Cruz-Jiménez, Desirée Vidaña-Pérez, Yoo Jin Cho, Jim F. Thrasher Ph.D., Ma, Ms

Faculty Publications

This study examined transitions in tobacco products use among Mexican smokers and dual users. Data were analyzed from exclusive smokers (n = 2,946) and dual users (n = 1,643) recruited from an online consumer research panel and surveyed every-four months from November 2018 to April 2021. For exclusive smokers, estimated transitions were (time “t + 1” four months after prior survey): a) remain as exclusive smokers; b) dual use; c) exclusive e-cigarette use or quit both products. Among dual users, transitions analyzed were: a) remain as dual user; b) exclusive smoker; c) exclusive e-cigarette user or quit both products. Multinomial …

Self-Sensing Smart Products In Smart Manufacturing Systems, Juergen Lenz, Eric Macdonald, Ramy Harik, Thorsten Wuest

Faculty Publications

We are surrounded by a growing number of products with embedded intelligence relying on sensors and internet access. These smart products, that already transform our lives, are also physical entities that need to be manufactured. Manufacturing today similarly relies on data and data-driven insights to improve quality, efficiency, and safety on the shopfloor. This paper discusses the vision to utilize the ability of smart products to sense and communicate already during their own manufacturing to enrich the smart manufacturing system’s data for better insights development and optimization. We furthermore, discuss the barriers and opportunities embedded in such a paradigm shift.

Towards A Post-Pandemic Mission, Boubakar Sanou, Josh Dietrich, Tyler Kern

Faculty Publications

No abstract provided.

Theology Matters, Jiří Moskala

Faculty Publications

No abstract provided.

God's Blazing Grace, Jiří Moskala

Faculty Publications

No abstract provided.

Finding Truth In A Post-Truth World, Kenley Hall

Faculty Publications

No abstract provided.

A Story Of Digital Church Development And Its Implications, Petr A. Činčala, Foye Michael Belyea, Mabio Cohelo

Faculty Publications

No abstract provided.

Permafrost And Climate Change: Carbon Cycle Feedbacks From The Warming Arctic, Edward A. G. Schuur, Benjamin W. Abbott, Roisin Commane, Jessica G. Ernakovich, Eugenie Euskirchen, Gustaf Hugelius, Guido Grosse, Miriam Jones, Charlie Koven, Victor Leshyk, David Lawrence, Michael M. Loranty, Marguerite Mauritz, David Olefeldt, Susan Natali, Heidi Rodenhizer, Verity Salmon, Christina Schadel, Jens Strauss, Claire C. Treat, Merritt Turetsky

Faculty Publications

Rapid Arctic environmental change affects the entire Earth system as thawing permafrost ecosystems release greenhouse gases to the atmosphere. Understanding how much permafrost carbon will be released, over what time frame, and what the relative emissions of carbon dioxide and methane will be is key for understanding the impact on global climate. In addition, the response of vegetation in a warming climate has the potential to offset at least some of the accelerating feedback to the climate from permafrost carbon. Temperature, organic carbon, and ground ice are key regulators for determining the impact of permafrost ecosystems on the global carbon …

Segmented Innovation In The Legalization Of Mitochondrial Transfer: Lessons From Australia And The United Kingdom, Myrisha S. Lewis

Faculty Publications

The U.S. is often characterized as a leader in innovation—a home of Nobel Prize‐winning scientists, innovators, and abundant research funding. Yet, in the area of assisted reproduction combined with genetic modification or substitution, what I call “reproductive genetic innovation,” that characterization begins to wane. This Article focuses on the regulation of mitochondrial transfer, a subset of reproductive genetic innovation. While human clinical trials related to mitochondrial transfer go forward in the U.K., the clinical use of the technique remains illegal in the U.S. due to a system of subterranean regulation by the U.S. Food and Drug Administration and a now-recurring …

Circuit Personalities, Allison Orr Larsen, Neal Devins

Faculty Publications

The U.S. Courts of Appeals do not behave as one; they have developed circuit-specific practices that are passed down from one generation of judges to the next. These different norms and traditions (some written down, others not) exist on a variety of levels: rules governing oral argument and the publishing of opinions, en banc practices, social customs, case discussion norms, law clerk dynamics, and even selfimposed circuit nicknames. In this Article, we describe these varying “circuit personalities” and then argue that they are necessary to the very survival of the federal courts of appeals. Circuit-specific norms and traditions foster collegiality …

Our Currency--Influence, Roy Gane

Faculty Publications

No abstract provided.

“Nothing To Do But Be Borne And Steered”: Unpacking Feminist Scripts In Elana Arnold’S Damsel, Jenna Spiering, Nicole Ann Amato

Faculty Publications

Feminism in novels marketed for young adults often reflects the values of a popular feminism that relies on individual and personal means of empowerment, rather than critiquing or seeking to dismantle systems of domination. In this paper, we illumminate frameworks and methods for engaging students in careful readings and evaluations of texts marketed as feminist, through an analysis of Elana Arnold’s feminist fairy tale, Damsel (2018). Drawing on theoretical frameworks of popular feminism, feral feminism, and theories of becoming, the authors use Critical Content Anlaysis to explore several tenets in contemporary feminist thought in order to analyze Arnold’s text and …

The American Virus - Racism - And God's Vaccine, Trevor O'Reggio

Faculty Publications

No abstract provided.

Approaches To Faith Integration: A Case Study Of Andrews University Employees, Duane Covrig, Glynis M. Bradfield, Steven Injety, Duduetsang Kakhu

Faculty Publications

For centuries, Christians have cultivated faith in themselves and others by engaging in prayer, evangelism, discipleship, and education, with Christian tertiary institutions playing a vital role in this nurturing of faith. However, previous studies have shown that Christian educators have also been complicit in depleting faith in others. This erosion of faith has been well documented in American "Christian" universities like Harvard, Yale, and Princeton, primarily due to modernity and secularization. For faith to thrive, it has to be backed with intention, and this is especially of paramount importance in American higher education today. As the oldest Seventh-day Adventist University, …