Digital Commons Network^™

Climate Change Models Predict Decreases In The Range Of A Microendemic Freshwater Fish In Honduras, Caleb D. Mcmahan, César E. Fuentes-Montejo, Luke Ginger, Juan Carlos Carrasco, Prosanta Chakrabarty, Wilfredo A. Matamoros

Faculty Publications

© 2020, The Author(s). Despite their incredible diversity, relatively little work has been done to assess impacts of climate change on tropical freshwater organisms. Chortiheros wesseli is a species of Neotropical cichlid (Cichlidae: Cichlinae) restricted to only a few river drainages in the Caribbean-slope of Honduras. Little is known about this species and few specimens had been collected until recently; however, our work with this species in the wild has led to a better understanding of its ecology and habitat preferences making it an excellent model for how freshwater fishes can be affected by climate change. This study assesses the …

An Asynchronous And Task-Based Implementation Of Peridynamics Utilizing Hpx—The C++ Standard Library For Parallelism And Concurrency, Patrick Diehl, Prashant K. Jha, Hartmut Kaiser, Robert Lipton, Martin Lévesque

Faculty Publications

On modern supercomputers, asynchronous many task systems are emerging to address the new architecture of computational nodes. Through this shift of increasing cores per node, a new programming model with focus on handling of the fine-grain parallelism with increasing amount of cores per computational node is needed. Asynchronous Many Task (AMT) run time systems represent a paradigm for addressing the fine-grain parallelism. They handle the increasing amount of threads per node and concurrency. HPX, a open source C++ standard library for parallelism and concurrency, is one AMT which is conforming to the C++ standard. Motivated by the impressive performance of …

A Magma Ocean Origin To Divergent Redox Evolutions Of Rocky Planetary Bodies And Early Atmospheres, Jie Deng, Zhixue Du, Bijaya B. Karki, Dipta B. Ghosh, Kanani K.M. Lee

Faculty Publications

Magma oceans were once ubiquitous in the early solar system, setting up the initial conditions for different evolutionary paths of planetary bodies. In particular, the redox conditions of magma oceans may have profound influence on the redox state of subsequently formed mantles and the overlying atmospheres. The relevant redox buffering reactions, however, remain poorly constrained. Using first-principles simulations combined with thermodynamic modeling, we show that magma oceans of Earth, Mars, and the Moon are likely characterized with a vertical gradient in oxygen fugacity with deeper magma oceans invoking more oxidizing surface conditions. This redox zonation may be the major cause …

Deep Mantle Melting, Global Water Circulation And Its Implications For The Stability Of The Ocean Mass, Shun Ichiro Karato, Bijaya Karki, Jeffrey Park

Faculty Publications

Oceans on Earth are present as a result of dynamic equilibrium between degassing and regassing through the interaction with Earth’s interior. We review mineral physics, geophysical, and geochemical studies related to the global water circulation and conclude that the water content has a peak in the mantle transition zone (MTZ) with a value of 0.1–1 wt% (with large regional variations). When water-rich MTZ materials are transported out of the MTZ, partial melting occurs. Vertical direction of melt migration is determined by the density contrast between the melts and coexisting minerals. Because a density change associated with a phase transformation occurs …

Computer-Based And Paper-And-Pencil Tests: A Study In Calculus For Stem Majors, Lawrence Smolinsky, Brian D. Marx, Gestur Olafsson, Yanxia A. Ma

Faculty Publications

Computer-based testing is an expanding use of technology offering advantages to teachers and students. We studied Calculus II classes for science, technology, engineering, and mathematics majors using different testing modes. Three sections with 324 students employed: paper-and-pencil testing, computer-based testing, and both. Computer tests gave immediate feedback and allowed multiple submissions and pooling. Paper-and-pencil tests (PPTs) required work and explanation allowing inspection of high cognitive demand tasks. Each test mode used the strength of its method. Students were given the same lecture by the same instructor on the same day and the same homework assignments and due dates. The design …

Sequential Predictors For Delay Compensation For Discrete Time Systems With Time-Varying Delays, Frédéric Mazenc, Michael Malisoff, Indra Narayana Sandilya Bhogaraju

Faculty Publications

We study time-varying linear discrete time systems with uncertainties and time-varying measurement delays, whose outputs are perturbed by uncertainty. We build sequential predictors, which ensure input-to-state stability with respect to the uncertainties and which can be constructed using output values under arbitrarily long delays. The number of required sequential predictors is any upper bound for the delay in our feedback stabilized closed loop systems. We illustrate our work in a digital control problem for a continuous time system that is discretized through sampling.

Improving Tolerance Control On Modular Construction Project With 3d Laser Scanning And Bim: A Case Study Of Removable Floodwall Project, Huimin Li, Chengyi Zhang, Siyuan Song, Sevilay Demirkesen, Ruidong Chang

Faculty Publications

Quality control is essential to a successful modular construction project and should be enhanced throughout the project from design to construction and installation. The current methods for analyzing the assembly quality of a removable floodwall heavily rely on manual inspection and contact-type measurements, which are time-consuming and costly. This study presents a systematic and practical approach to improve quality control of the prefabricated modular construction projects by integrating building information modeling (BIM) with three-dimensional (3D) laser scanning technology. The study starts with a thorough literature review of current quality control methods in modular construction. Firstly, the critical quality control procedure …

Two Hundred And Fifty-Four Metagenome-Assembled Bacterial Genomes From The Bank Vole Gut Microbiota, Anton Lavrinienko, Eugene Tukalenko, Timothy A. Mousseau, Luke R. Thompson, Rob Knight, Tapio Mappes, Phillip C. Watts

Faculty Publications

Vertebrate gut microbiota provide many essential services to their host. To better understand the diversity of such services provided by gut microbiota in wild rodents, we assembled metagenome shotgun sequence data from a small mammal, the bank vole Myodes glareolus (Rodentia, Cricetidae). We were able to identify 254 metagenome assembled genomes (MAGs) that were at least 50% (n = 133 MAGs), 80% (n = 77 MAGs) or 95% (n = 44 MAGs) complete. As typical for a rodent gut microbiota, these MAGs are dominated by taxa assigned to the phyla Bacteroidetes (n = 132 MAGs) and …

Improving The Robustness Of The Advanced Ligo Detectors To Earthquakes, E. Schwartz, A. Pele, J. Warner, B. Lantz, J. Betzwieser, K. L. Dooley, S. Biscans, M. Coughlin, N. Mukund, R. Abbott, C. Adams, R. X. Adhikari, A. Ananyeva, S. Appert, K. Arai, J. S. Areeda, Y. Asali, S. M. Aston, C. Austin, A. M. Baer, M. Ball, S. W. Ballmer, S. Banagiri, D. Barker, L. Barsotti, J. Bartlett, B. K. Berger, D. Bhattacharjee, G. Billingsley, C. D. Blair, R. M. Blair, N. Bode, P. Booker

Faculty Publications

Teleseismic, or distant, earthquakes regularly disrupt the operation of ground-based gravitational wave detectors such as Advanced LIGO. Here, we present EQ mode, a new global control scheme, consisting of an automated sequence of optimized control filters that reduces and coordinates the motion of the seismic isolation platforms during earthquakes. This, in turn, suppresses the differential motion of the interferometer arms with respect to one another, resulting in a reduction of DARM signal at frequencies below 100 mHz. Our method greatly improved the interferometers' capability to remain operational during earthquakes, with ground velocities up to 3.9 μm s-1 rms in the …

Bagls, A Multihospital Benchmark For Automatic Glottis Segmentation, Pablo Gómez, Andreas M. Kist, Patrick Schlegel, David A. Berry, Dinesh K. Chhetri, Stephan Dürr, Matthias Echternach, Aaron M. Johnson, Stefan Kniesburges, Melda Kunduk, Youri Maryn, Anne Schützenberger, Monique Verguts, Michael Döllinger

Faculty Publications

Laryngeal videoendoscopy is one of the main tools in clinical examinations for voice disorders and voice research. Using high-speed videoendoscopy, it is possible to fully capture the vocal fold oscillations, however, processing the recordings typically involves a time-consuming segmentation of the glottal area by trained experts. Even though automatic methods have been proposed and the task is particularly suited for deep learning methods, there are no public datasets and benchmarks available to compare methods and to allow training of generalizing deep learning models. In an international collaboration of researchers from seven institutions from the EU and USA, we have created …

Applying Speech Technologies To Assess Verbal Memory In Patients With Serious Mental Illness, Terje B. Holmlund, Chelsea Chandler, Peter W. Foltz, Alex S. Cohen, Jian Cheng, Jared C. Bernstein, Elizabeth P. Rosenfeld, Brita Elvevåg

Faculty Publications

Verbal memory deficits are some of the most profound neurocognitive deficits associated with schizophrenia and serious mental illness in general. As yet, their measurement in clinical settings is limited to traditional tests that allow for limited administrations and require substantial resources to deploy and score. Therefore, we developed a digital ambulatory verbal memory test with automated scoring, and repeated self-administration via smart devices. One hundred and four adults participated, comprising 25 patients with serious mental illness and 79 healthy volunteers. The study design was successful with high quality speech recordings produced to 92% of prompts (Patients: 86%, Healthy: 96%). The …

Families Coping With Financial Loss Following The Deepwater Horizon Oil Spill, Kathryn Sweet Keating, Sarah Becker, Ifeyinwa F. Davis, Thomas Chandler, Tim Slack, Jaishree Beedasy

Faculty Publications

Objective: This study examines family strategies for coping and adaptation to social disruption from the 2010 Deepwater Horizon oil spill (DHOS) in south Louisiana. Background: The DHOS is a technological disaster of unprecedented scale and ongoing impact, including the socioeconomic disruption of families. Method: Using data from focus groups, grounded-theory methods informed a thematic analysis of spill-related economic loss and coping mechanisms among families in the spill-affected region. Results: Key findings were as follows: (a) long-term economic impacts persisted but were nuanced and differed across places; (b) for families living in multistressor environments, concerns about the DHOS spilled over into …

Genetic Determinants For Agronomic And Yield-Related Traits Localized On A Gbs-Snp Linkage Map From A Japonica X Indica Cross In Rice, Teresa B. De Leon, Rajat Pruthi, Babitha Jampala, Anna H. Borjas, Prasanta K. Subudhi

Faculty Publications

Rice is an important cereal for human consumption. Identification of QTLs for important agronomic traits with high resolution is essential to the identification of genes and marker-assisted breeding to improve rice productivity. A genotyping by sequencing (GBS)-based high-resolution SNP linkage developed in a recombinant inbred lines (RIL) population of a japonica (Bengal) × indica (Pokkali) cross was used for QTL analysis of traits such as days to heading, plant height, panicle length, flag leaf length, 1000 kernel weight, number of unfilled grains, number of filled grains, grain width, grain length, and awns using interval mapping and inclusive composite interval mapping …

Variation In Phosphorus Availability, Root Architecture Attributes, And Onset Of Storage Root Formation Among Sweetpotato Cultivars, Arthur Villordon, Jeffrey C. Gregorie, Don Labonte

Faculty Publications

The primary objective of this work was to generate species-specific information about root architectural responses to variations in inorganic phosphate (Pi) availability at the onset of storage root formation among six sweetpotato (Ipomoea batatas) cultivars. Three Pi levels were used: 0 (low Pi); 0.17 (medium Pi); and 0.34 (high Pi) g/pot triple super phosphate (0N-46P-0K). The check cultivar 'Bayou Belle' (BB) consistently showed evidence of storage root formation at 15 days in adventitious roots (ARs) grown across three Pi levels and two planting dates (PDs). Storage root formation was also detected in 'Orleans' (OR) and 'Beauregard' (BX), but it was …

Influence Of Energy Removal Rate On The Quality Of Minced Meat From Undersized Crawfish During Frozen Storage, Franklin Bonilla, Vondel Reyes, Alexander Chouljenko, Bennett Dzandu, Subramaniam Sathivel

Faculty Publications

Abstract: Undersized crawfish have little economic value and are often discarded. Producing crawfish minced meat (CMM) from undersized crawfish and using an appropriate freezing technique may enable an economically viable market. The objective of this research was to evaluate the effect of the energy removal rate using two techniques, cryogenic freezing (CF) and air blast freezing (BF), on CMM’s quality during frozen storage. CMM was separated into two batches; one batch was cryogenically frozen with liquid nitrogen and the other batch was frozen with an air blast freezer. CMM batches were frozen and stored at − 18 °C. They were …

Characterization Of Haplotype Diversity In The Badh2 Aroma Gene And Development Of A Kasp Snp Assay For Predicting Aroma In U.S. Rice, Christopher K. Addison, Brijesh Angira, Manoch Kongchum, Dustin L. Harrell, Niranjan Baisakh, Steven D. Linscombe, Adam N. Famoso

Faculty Publications

Background: Aroma is an important grain quality trait in rice, controlled by mutations within the BADH2 gene. The trait is simply inherited, and its importance in variety development makes it a practical target for marker-assisted selection in applied breeding programs. The predominant functional mutation within BADH2, an 8-bp indel, can be reliably detected using a PCR-based assay, but the available assays and associated genotyping platforms are insufficient for large-scale applied molecular breeding applications and are not compatible with outsourcing genotyping services. Results: We first characterized SNP diversity across the BADH2 gene in a collection of 2932 rice varieties to determine …

Self-Generating Lower Bounds And Continuation For The Boltzmann Equation, Christopher Henderson, Stanley Snelson, Andrei Tarfulea

Faculty Publications

For the spatially inhomogeneous, non-cutoff Boltzmann equation posed in the whole space Rx3, we establish pointwise lower bounds that appear instantaneously even if the initial data contains vacuum regions. Our lower bounds depend only on the initial data and upper bounds for the mass and energy densities of the solution. As an application, we improve the weakest known continuation criterion for large-data solutions, by removing the assumptions of mass bounded below and entropy bounded above.

On Two Families Of Funk-Type Transforms, M. Agranovsky, B. Rubin

Faculty Publications

We consider two families of Funk-type transforms that assign to a function on the unit sphere the integrals of that function over spherical sections by planes of fixed dimension. Transforms of the first kind are generated by planes passing through a fixed center outside the sphere. Similar transforms with interior center and with center on the sphere itself we studied in previous publications. Transforms of the second kind, or the parallel slice transforms, correspond to planes that are parallel to a fixed direction. We show that the Funk-type transforms with exterior center express through the parallel slice transforms and the …

Effects Of Landscape, Soils, And Weather On Yields, Nitrogen Use, And Profitability With Sensor-Based Variable Rate Nitrogen Management In Cotton, James A. Larson, Melissa Stefanini, Xinhua Yin, Christopher N. Boyer, Dayton M. Lambert, Xia Vivian Zhou, Brenda S. Tubaña, Peter Scharf, Jac J. Varco, David J. Dunn, Hubert J. Savoy, Michael J. Buschermohle

Faculty Publications

Farmers may be reluctant to adopt variable rate nitrogen (VRN) management because of uncertain profits. This study assessed field landscape, soil, and weather effects on optical sensing (OS)-based VRN on cotton (Gossypium hirsutum L.) N rates, yields, and net returns (NRs). Field data were collected from 21 locations in Louisiana, Mississippi, Missouri, and Tennessee, USA, between 2011 and 2014. Data included yields, N rates, and NRs for the farmer practice (FP), OS-based VRN, and OS-based VRN supplemented with other information. Production data were augmented with landscape, soils, and weather data, and ANOVA and logistic regressions were used to identify field …

Practices Of Athletic Trainers Using Weight Charts To Determine Hydration Status And Fluid-Intervention Strategies, Jeremy M. Eith, Clint R. Haggard, Dawn M. Emerson, Susan Yeargin Ph.D., Atc

Faculty Publications

Context

Determining an athlete's hydration status allows hydration-related concerns to be identified before significant medical or performance concerns arise. Weight charts are an accurate measure of hydration status changes, yet their clinical use by athletic trainers (ATs) is unknown.

Objective

To investigate ATs' use of weight charts in athletic settings and describe their subsequent clinical decisions.

Design

Cross-sectional survey.

Setting

High schools and National Collegiate Athletic Association Divisions I, II, III and National Association Intercollegiate Athletics colleges.

Patients or Other Participants

A total of 354 ATs (men = 162, women = 175; 17 respondents did not answer the demographic questions) …

Practices Of Athletic Trainers Using Weight Charts To Determine Hydration Status And Fluid-Intervention Strategies, Jeremy M. Eith, Clint R. Haggard, Dawn M. Emerson, Susan W. Yeargin Ph.D., Atc

Faculty Publications

Context

Determining an athlete's hydration status allows hydration-related concerns to be identified before significant medical or performance concerns arise. Weight charts are an accurate measure of hydration status changes, yet their clinical use by athletic trainers (ATs) is unknown.

Objective

To investigate ATs' use of weight charts in athletic settings and describe their subsequent clinical decisions.

Design

Cross-sectional survey.

Setting

High schools and National Collegiate Athletic Association Divisions I, II, III and National Association Intercollegiate Athletics colleges.

Patients or Other Participants

A total of 354 ATs (men = 162, women = 175; 17 respondents did not answer the demographic questions) …

Muscadine Or Amla Extracts Standardized To Ellagic Acid Content Ameliorate Glucolipotoxicity Associated Β-Cell Dysfunction Via Inhibition Of Il-1Β And Improved Insulin Secretion, Srikanth Earpina, Karen Mcdonough, Millicent Yeboah-Awudzi, Kristina J. Cook, Sita Aggarwal, Jack N. Losso

Faculty Publications

Glucolipotocixity induces IL-1 β secretion which impairs pancreatic β-cell insulin secretion. Ellagic acid and urolithin A have strong anti-inflammatory effect on cells. Muscadine and amla are very good sources of ellagic acid. The present study examined the effect of ellagic acid, ellagic acid-rich muscadine or amla extract, or urolothin A on inflammation in β cells under glucolipotoxic conditions. Rat NIT-1 β cells were incubated in glucolipotoxic conditions (33.3 mM glucose, 250 μM palmitic acid or 33.3 mM glucose + 250 μM palmitic acid with or without ellagic acid, ellagic acid-rich muscadine or amla extracts standardized to its ellagic acid content, …

Evaluating The Implementation Of The Switch® School Wellness Intervention And Capacity-Building Process Through Multiple Methods, Gabriella M. Mcloughlin, Priscila Candal, Spyridoula Vazou, Joey A. Lee, David A. Dzewaltowski, Richard R. Rosenkranz, Lorraine Lanningham-Foster, Douglas A. Gentile, Laura Liechty, Senlin Chen, Gregory J. Welk

Faculty Publications

Background: School wellness programming is important for promoting healthy lifestyles and academic achievement in youth; however, research is needed on methods that can help schools implement and sustain such programs on their own. The purpose of this study was to investigate factors within and outside the school environment that influenced school capacity for implementation and potential sustainability of wellness programming. Methods: As part of the School Wellness Integration Targeting Child Health (SWITCH®) intervention, elementary school wellness teams (N = 30) were guided through a capacity-building process focused on promoting the adoption of healthy lifestyle behaviors in students. Data on implementation …

On Subdiagonal Rational Pade Approximations And The Brenner-Thomee Approximation Theorem For Operator Semigroups, Frank Neubrander, Koray Ozer, Lee Windsperger

Faculty Publications

The computational powers of Mathematica are used to prove polynomial identities that are essential to obtain growth estimates for subdiagonal rational Pade approximations of the exponential function and to obtain new estimates of the constants of the Brenner-Thomee Approximation Theorem of Semigroup Theory.

Fitting Partially Linear Functional-Coefficient Panel-Data Models With Stata, Kerui Du, Yonghui Zhang, Qiankun Zhou

Faculty Publications

In this article, we describe the implementation of fitting partially linear functional-coefficient panel models with fixed effects proposed by An, Hsiao, and Li [2016, Semiparametric estimation of partially linear varying coefficient panel data models in Essays in Honor of Aman Ullah (Advances in Econometrics, Volume 36)] and Zhang and Zhou (Forthcoming, Econometric Reviews). Three new commands xtplfc, ivxtplfc, and xtdplfc are introduced and illustrated through Monte Carlo simulations to exemplify the effectiveness of these estimators.

Using Positive Behavioral Interventions And Supports To Address Suspension Concerns, Joseph B. Ryan, Paul Mooney

Faculty Publications

No abstract provided.

Monitoring 2019 Bonnet Carré Spillway Impacts - Final Report, J. Read Hendon, Jerry D. Wiggert, Jill Hendon

Faculty Publications

Due to the multiple and extended openings of the Bonnet Carré Spillway in 2019, the University of Southern Mississippi (USM) was tasked by the Mississippi Department of Marine Resources to conduct ecological sampling in the Mississippi Sound and adjacent waters. in an effort to better understand the impacts of the extensive freshwater diversion of Bonnet Carré Spillway operations on Mississippi's coastal and marine resources. The period of performance for this project was June 1, 2019, to August 31, 2019. This technical report summarizes the three months of weekly surveys and analyses, over June - August 2019, conducted by the University …

Author Correction: Past Continental Shelf Evolution Increased Antarctic Ice Sheet Sensitivity To Climatic Conditions (Scientific Reports, (2018), 8, 1, (11323), 10.1038/S41598-018-29718-7), Florence Colleoni, Laura De Santis, Enea Montoli, Elisabetta Olivo, Christopher C. Sorlien, Philip J. Bart, Edward G.W. Gasson, Andrea Bergamasco, Chiara Sauli, Nigel Wardell, Stefano Prato

Faculty Publications

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Evidence Of Metasomatism In The Interior Of Vesta, Ai Cheng Zhang, Noriyuki Kawasaki, Huiming Bao, Jia Liu, Liping Qin, Minami Kuroda, Jian Feng Gao, Li Hui Chen, Ye He, Naoya Sakamoto, Hisayoshi Yurimoto

Faculty Publications

© 2020, The Author(s). Diogenites are a group of meteorites that are derived from the interior of the largest protoplanet Vesta. They provide a unique opportunity to understanding together the internal structure and dynamic evolution of this protoplanet. Northwest Africa (NWA) 8321 was suggested to be an unbrecciated noritic diogenite meteorite, which is confirmed by our oxygen and chromium isotopic data. Here, we find that olivine in this sample has been partly replaced by orthopyroxene, troilite, and minor metal. The replacement texture of olivine is unambiguous evidence of sulfur-involved metasomatism in the interior of Vesta. The presence of such replacement …

First-Principles Computation Of Diffusional Mg Isotope Fractionation In Silicate Melts, Haiyang Luo, Bijaya B. Karki, Dipta B. Ghosh, Huiming Bao

Faculty Publications

© 2020 Elsevier Ltd Diffusional isotope fractionation occurs in geochemical processes (such as magma mixing, bubble growth, and crystal growth), even at magmatic temperatures. Isotopic mass dependence of diffusion is commonly expressed as [Formula presented], where Di and Dj are diffusion coefficients of two isotopes whose masses are mi and mj. How the dimensionless empirical parameter β depends on temperature, pressure, and composition remains poorly constrained. Here, we conducted a series of first-principles molecular dynamics simulations to evaluate the β factor of Mg isotopes in MgSiO3 and Mg2SiO4 melts using pseudo-isotope method. In particular, we considered interactions between Mg isotopes …