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Speech Artifact Is Also Present In Spike Data, Joel I. Berger, Karim Johari, Christopher K. Kovach, Jeremy Dw Greenlee Nov 2022

Speech Artifact Is Also Present In Spike Data, Joel I. Berger, Karim Johari, Christopher K. Kovach, Jeremy Dw Greenlee

Faculty Publications

Bush et al. (2022) highlight that brain recordings examining speech production can be significantly affected by microphonic artifact, which would change the interpretation of these kinds of data. While these findings are vital in determining whether data are artifactual or physiological in origin, frequencies were only examined up to 250 Hz (i.e., local field potentials), which would imply that spike-related data (single or multi-neuron recordings) are unaffected. We highlight here that this type of contamination may also be present in unit recordings, with the same aim to understand genuine neural mechanisms rather than mis-interpreting artifactual data.

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Carbon Dioxide Degassing And Lateral Dissolved Carbon Export During The Unprecedented 2019 Mississippi River Mega Flood – Implications For Large River Carbon Transport Under Future Climate, Y. J. Xu, Z. Xu Nov 2022

Carbon Dioxide Degassing And Lateral Dissolved Carbon Export During The Unprecedented 2019 Mississippi River Mega Flood – Implications For Large River Carbon Transport Under Future Climate, Y. J. Xu, Z. Xu

Faculty Publications

In 2019, the Mississippi River experienced the longest and largest flood that surpassed by far the 1927, 1973, and 2011 mega floods. This unprecedented event provided an unique opportunity to test the hypotheses that summer floods increase not only lateral dissolved carbon transport but also carbon dioxide (CO2) degassing, and that the increase in CO2 outgassing from river surface occurs mainly due to higher terrestrial carbon inputs and warmer temperatures. To test the hypotheses, we conducted intensive river sampling and in-situ measurements on partial pressure of CO2 (pCO2) and other water physical, chemical and biological parameters in 6-day intervals throughout …

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Hydrologic Connectivity And Residence Time Affect The Sediment Trapping Efficiency And Dissolved Oxygen Concentrations Of The Atchafalaya River Basin, Daniel E. Kroes, Richard H. Day, Michael D. Kaller, Charles R. Demas, William E. Kelso, Tiffany Pasco, Raynie Harlan, Steven Roberts Nov 2022

Hydrologic Connectivity And Residence Time Affect The Sediment Trapping Efficiency And Dissolved Oxygen Concentrations Of The Atchafalaya River Basin, Daniel E. Kroes, Richard H. Day, Michael D. Kaller, Charles R. Demas, William E. Kelso, Tiffany Pasco, Raynie Harlan, Steven Roberts

Faculty Publications

Little is known about water movement, volume, or residence time (RT), and how those characteristics affect sediment trapping efficiency (TE) and dissolved oxygen concentrations (DO) in the United States' largest remaining bottomland hardwood swamp, the Atchafalaya River Basin. To better understand these dynamics, this study used bathymetry, lidar, and stage records to determine volumes in the Basin's hydrologically distinct water management units (WMUs). Discharge measurements determined flow distribution and RT. Residence time was compared with DO to identify conditions that coincided with DO increases or decreases. Suspended sediment concentrations (SSC) were used to determine TE relative to calculated and measured …

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Louisiana Black-Bellied Whistling-Duck Clutch Characteristics In The Presence Of Conspecific And Interspecific Brood Parasitism, Dylan L. Bakner, Katie E. Miranda, Kevin M. Ringelman Nov 2022

Louisiana Black-Bellied Whistling-Duck Clutch Characteristics In The Presence Of Conspecific And Interspecific Brood Parasitism, Dylan L. Bakner, Katie E. Miranda, Kevin M. Ringelman

Faculty Publications

Black-bellied Whistling-Ducks (Dendrocygna autumnalis; Whistling-Duck) are undergoing a rapid range expansion northward and now breed throughout the Southeastern United States. As a facultative cavity-nesting species, they have the potential to compete with Wood Ducks (Aix sponsa) and Hooded Mergansers (Lophodytes cucullatus) for nest sites. Little is known about Whistling-Duck breeding biology, and estimates of clutch characteristics and rates of conspecific and interspecific brood parasitism (CBP and IBP, respectively) are lacking. We monitored Whistling-Duck nests in Louisiana to describe nesting chronology, clutch size of parasitized and unparasitized (normal) nests, and hatchability (i.e., the portion of eggs that hatched) for clutches of …

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Obesity 2012–2022: It's Been Quite A Party!, Eric Ravussin, Leanne M. Redman, Donna H. Ryan Nov 2022

Obesity 2012–2022: It's Been Quite A Party!, Eric Ravussin, Leanne M. Redman, Donna H. Ryan

Clinical Research Faculty Publications

No abstract provided.

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Modeling The Sorption Of Ni(Ii) And Zn(Ii) By Mn Oxide–Coated Sand: Equilibrium And Kinetic Approaches, Joshua T. Padilla, H. Magdi Selim, Lewis A. Gaston Nov 2022

Modeling The Sorption Of Ni(Ii) And Zn(Ii) By Mn Oxide–Coated Sand: Equilibrium And Kinetic Approaches, Joshua T. Padilla, H. Magdi Selim, Lewis A. Gaston

Faculty Publications

The behavior of metal cations in oxide-dominated systems is controlled by sorption reactions, which in turn depend on pH. Descriptions of such reactions are of interest for contaminant monitoring or remediation efforts; however, widely used isotherms such as Freundlich or Langmuir neglect the effect of pH and are therefore limited in their applicability. Two pH-dependent isotherms and their kinetic analogs were developed and evaluated regarding their ability to describe equilibrium and time-dependent sorption of Ni and Zn by Mn oxide–coated sand (MOCS). The sorption of Ni and Zn by MOCS at pH 4.0, 5.5, and 7.0 was investigated using batch …

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Economic Freedom, Climate Culpability, And Physical Activity Indicators Among Children And Adolescents: Report Card Grades From The Global Matrix 4.0, Eun Young Lee, Patrick Abi Nader, Salomé Aubert, Silvia A. González, Peter T. Katzmarzyk, Asaduzzaman Khan, Wendy Y. Huang, Taru Manyanga, Shawnda Morrison, Diego Augusto Santos Silva, Mark S. Tremblay Nov 2022

Economic Freedom, Climate Culpability, And Physical Activity Indicators Among Children And Adolescents: Report Card Grades From The Global Matrix 4.0, Eun Young Lee, Patrick Abi Nader, Salomé Aubert, Silvia A. González, Peter T. Katzmarzyk, Asaduzzaman Khan, Wendy Y. Huang, Taru Manyanga, Shawnda Morrison, Diego Augusto Santos Silva, Mark S. Tremblay

Population and Public Health Science Faculty Publications

Background: Macrolevel factors such as economic and climate factors can be associated with physical activity indicators. This study explored patterns and relationships between economic freedom, climate culpability, and Report Card grades on physical activity-related indicators among 57 countries/jurisdictions participating in the Global Matrix 4.0. Methods: Participating countries/ jurisdictions provided Report Card grades on 10 common indicators. Information on economic freedom and climatic factors were gathered from public data sources. Correlations between the key variables were provided by income groups (ie, low- and middle-income countries/jurisdictions and high-income countries/jurisdictions [HIC]). Results: HIC were more economically neoliberal and more responsible for climate change …

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Active Healthy Kids Global Alliance Global Matrix 4.0—A Resource For Physical Activity Researchers, Mark S. Tremblay, Joel D. Barnes, Iryna Demchenko, Silvia A. Gonzalez, Javier Brazo-Sayavera, Jakub Kalinowski, Peter T. Katzmarzyk, Taru Manyanga, John J. Reilly, Stephen Heung Sang Wong, Salomé Aubert Nov 2022

Active Healthy Kids Global Alliance Global Matrix 4.0—A Resource For Physical Activity Researchers, Mark S. Tremblay, Joel D. Barnes, Iryna Demchenko, Silvia A. Gonzalez, Javier Brazo-Sayavera, Jakub Kalinowski, Peter T. Katzmarzyk, Taru Manyanga, John J. Reilly, Stephen Heung Sang Wong, Salomé Aubert

Population and Public Health Science Faculty Publications

Background: This brief report provides an overview of the Active Healthy Kids Global Alliance (AHKGA); an introduction to the Global Matrix 4.0; an explanation of the value and opportunities that the AHKGA efforts and assets provide to the physical activity research, policy, practice, and advocacy community; an outline of the series of papers related to the Global Matrix 4.0 in this issue of the Journal of Physical Activity and Health; and an invitation for future involvement. Methods: The AHKGA was formed to help power the global movement to get kids moving. In 2019–2021, we recruited countries to participate in the …

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Global Matrix 4.0 Physical Activity Report Card Grades For Children And Adolescents: Results And Analyses From 57 Countries, Salomé Aubert, Joel D. Barnes, Iryna Demchenko, Myranda Hawthorne, Chalchisa Abdeta, Patrick Abi Nader, José Carmelo Adsuar Sala, Nicolas Aguilar-Farias, Susana Aznar, Peter Bakalár, Jasmin Bhawra, Javier Brazo-Sayavera, Mikel Bringas, Jonathan Y. Cagas, Angela Carlin, Chen Kang Chang, Bozhi Chen, Lars Breum Christiansen, Candice Jo Anne Christie, Gabriela Fernanda De Roia, Christine Delisle Nyström, Yolanda Demetriou, Visnja Djordjic, Arunas Emeljanovas, Liri Findling Endy, Aleš Gába, Karla I. Galaviz, Silvia A. González, Kylie D. Hesketh, Wendy Yajun Huang, Omphile Hubona, Justin Y. Jeon, Danijel Jurakić, Jaak Jürimäe Nov 2022

Global Matrix 4.0 Physical Activity Report Card Grades For Children And Adolescents: Results And Analyses From 57 Countries, Salomé Aubert, Joel D. Barnes, Iryna Demchenko, Myranda Hawthorne, Chalchisa Abdeta, Patrick Abi Nader, José Carmelo Adsuar Sala, Nicolas Aguilar-Farias, Susana Aznar, Peter Bakalár, Jasmin Bhawra, Javier Brazo-Sayavera, Mikel Bringas, Jonathan Y. Cagas, Angela Carlin, Chen Kang Chang, Bozhi Chen, Lars Breum Christiansen, Candice Jo Anne Christie, Gabriela Fernanda De Roia, Christine Delisle Nyström, Yolanda Demetriou, Visnja Djordjic, Arunas Emeljanovas, Liri Findling Endy, Aleš Gába, Karla I. Galaviz, Silvia A. González, Kylie D. Hesketh, Wendy Yajun Huang, Omphile Hubona, Justin Y. Jeon, Danijel Jurakić, Jaak Jürimäe

Population and Public Health Science Faculty Publications

Background: The Global Matrix 4.0 on physical activity (PA) for children and adolescents was developed to achieve a comprehensive understanding of the global variation in children’s and adolescents’ (5–17 y) PA, related measures, and key sources of influence. The objectives of this article were (1) to summarize the findings from the Global Matrix 4.0 Report Cards, (2) to compare indicators across countries, and (3) to explore trends related to the Human Development Index and geo-cultural regions. Methods: A total of 57 Report Card teams followed a harmonized process to grade the 10 common PA indicators. An online survey was conducted …

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Phytochemical Targeting Of Mitochondria For Breast Cancer Chemoprevention, Therapy, And Sensitization, Elizabeth R.M. Zunica, Christopher L. Axelrod, John P. Kirwan Nov 2022

Phytochemical Targeting Of Mitochondria For Breast Cancer Chemoprevention, Therapy, And Sensitization, Elizabeth R.M. Zunica, Christopher L. Axelrod, John P. Kirwan

Division of Basic Science Faculty Publications

Breast cancer is a common and deadly disease that causes tremendous physical, emotional, and financial burden on patients and society. Early-stage breast cancer and less aggressive subtypes have promising prognosis for patients, but in aggressive subtypes, and as cancers progress, treatment options and responses diminish, dramatically decreasing survival. Plants are nutritionally rich and biologically diverse organisms containing thousands of metabolites, some of which have chemopreventive, therapeutic, and sensitizing properties, providing a rich source for drug discovery. In this study we review the current landscape of breast cancer with a central focus on the potential role of phytochemicals for treatment, management, …

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Impact Of Biochar, Fertilizers And Cultivation Type On Environmentally Persistent Free Radicals In Agricultural Soil, Edita Baltrėnaitė-Gedienė, Slawomir Lomnicki, Chuqi Guo Nov 2022

Impact Of Biochar, Fertilizers And Cultivation Type On Environmentally Persistent Free Radicals In Agricultural Soil, Edita Baltrėnaitė-Gedienė, Slawomir Lomnicki, Chuqi Guo

Faculty Publications

Environmentally persistent free radicals (EPFRs) have been considered as emerging contaminants due to their detrimental effects on human health. The adverse health impacts are attributed to oxidative stress induced by EPFRs through the formation of reactive oxygen species (ROS). The biochar pyrolysis process entails the thermal decomposition of organic compounds in the biomass, with the carbonization conditions and feedstock type facilitating the formation of EPFRs. When biochar is used to amend soil, these radicals may promote the formation of ROS, and thus influence the transformation of organic and inorganic contaminants in soil and impact the rhizosphere. Agricultural soils are being …

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A Bibliometric Analysis Of Machine Learning Econometrics In Asset Pricing, Hector O. Zapata, Supratik Mukhopadhyay Nov 2022

A Bibliometric Analysis Of Machine Learning Econometrics In Asset Pricing, Hector O. Zapata, Supratik Mukhopadhyay

Faculty Publications

Machine learning (ML) is a novel method that has applications in asset pricing and that fits well within the problem of measurement in economics. Unlike econometrics, ML models are not designed for parameter estimation and inference, but similar to econometrics, they address, and may be better suited for, problems of prediction. While some ML methods have been applied in econometrics for decades, their success in prediction has been limited, and examples of this abound in the asset pricing literature. In recent years, the ML literature has advanced new, more efficient, computation methods for regularization, modeling nonlinearity, and improved out-of-sample prediction. …

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Confidence Intervals For Relative Intensity Of Collaboration (Ric) Indicators, Joel Emanuel Fuchs, Lawrence Smolinsky, Ronald Rousseau Nov 2022

Confidence Intervals For Relative Intensity Of Collaboration (Ric) Indicators, Joel Emanuel Fuchs, Lawrence Smolinsky, Ronald Rousseau

Faculty Publications

Purpose: We aim to extend our investigations related to the Relative Intensity of Collaboration (RIC) indicator, by constructing a confidence interval for the obtained values. Design/methodology/approach: We use Mantel-Haenszel statistics as applied recently by Smolinsky, Klingenberg, and Marx. Findings: We obtain confidence intervals for the RIC indicator Research limitations: It is not obvious that data obtained from the Web of Science (or any other database) can be considered a random sample. Practical implications: We explain how to calculate confidence intervals. Bibliometric indicators are more often than not presented as precise values instead of an approximation depending on the database and …

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Iss Inequalities For Vector Versions Of Halanay's Inequality And Of The Trajectory-Based Approach, Frédéric Mazenc, Michael Malisoff Nov 2022

Iss Inequalities For Vector Versions Of Halanay's Inequality And Of The Trajectory-Based Approach, Frédéric Mazenc, Michael Malisoff

Faculty Publications

Halanay's inequality is a powerful and widely used tool to prove asymptotic convergence properties of functions that arise in the study of systems with delays or continuous-discrete features. In its standard form, it applies to scalar valued functions that satisfy decay conditions, with overshoots depending on suprema of the functions over suitable intervals. Then it provides an exponential decay estimate on the scalar functions. Here, we provide vector versions of Halanay's inequality, and of the so-called trajectory based approach, both yielding input-to-state stability (or ISS) inequalities. Our proofs of the inequalities use the theory of positive systems. We apply our …

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Improved Models Of R Coronae Borealis Stars, Bradley Munson, Emmanouil Chatzopoulos, Pavel A. Denissenkov Nov 2022

Improved Models Of R Coronae Borealis Stars, Bradley Munson, Emmanouil Chatzopoulos, Pavel A. Denissenkov

Faculty Publications

We present an improved numerical method to model subsolar He+CO-WD merger progenitors of R Corona Borealis stars that builds on our previous work. These improvements include a smooth entropy transition from the core to the envelope of the post-merger, inclusion of single-zone nucleosynthesis to mimic the effects of burning during the merger event, and post-processing the models with a larger nuclear network for analysis of s-process nucleosynthesis. We perform a parameter study to understand the effects of the entropy transition, peak temperature, and overshooting on our models. The models that best agree with observations of R Corona Borealis stars are …

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Efficacy Of The Symmetry-Adapted Basis For Ab Initio Nucleon-Nucleus Interactions For Light- And Intermediate-Mass Nuclei, A. Mercenne, K. D. Launey, T. Dytrych, J. E. Escher, S. Quaglioni, G. H. Sargsyan, D. Langr, J. P. Draayer Nov 2022

Efficacy Of The Symmetry-Adapted Basis For Ab Initio Nucleon-Nucleus Interactions For Light- And Intermediate-Mass Nuclei, A. Mercenne, K. D. Launey, T. Dytrych, J. E. Escher, S. Quaglioni, G. H. Sargsyan, D. Langr, J. P. Draayer

Faculty Publications

We study the efficacy of a new ab initio framework that combines the symmetry-adapted (SA) no-core shell-model approach with the resonating group method (RGM) for unified descriptions of nuclear structure and reactions. We obtain ab initio neutron-nucleus interactions for 4He, 16O, and 20Ne targets, starting with realistic nucleon-nucleon potentials. We discuss the effect of increasing model space sizes and symmetry-based selections on the SA-RGM norm and direct potential kernels, as well as on phase shifts, which are the input to calculations of cross sections. We demonstrate the efficacy of the SA basis and its scalability with particle …

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Niobium In The Clean Limit: An Intrinsic Type-I Superconductor, Ruslan Prozorov, Mehdi Zarea, James A. Sauls Nov 2022

Niobium In The Clean Limit: An Intrinsic Type-I Superconductor, Ruslan Prozorov, Mehdi Zarea, James A. Sauls

Faculty Publications

Niobium is one of the most researched superconductors, both theoretically and experimentally. It is enormously significant in all branches of superconducting applications, from powerful magnets to quantum computing. It is therefore imperative to understand its fundamental properties in great detail. Here, we use the results of recent microscopic calculations of anisotropic electronic, phonon, and superconducting properties, and apply a thermodynamic criterion for the type of superconductivity, more accurate and straightforward than a conventional Ginzburg-Landau parameter κ-based delineation, to show that pure niobium is a type-I superconductor in the clean limit. However, disorder (impurities, defects, strain, stress) pushes it to become …

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The Global Regulator Mftr Controls Virulence And Siderophore Production In Burkholderia Thailandensis, Sudarshan S. Thapa, Ahmed Al-Tohamy, Anne Grove Nov 2022

The Global Regulator Mftr Controls Virulence And Siderophore Production In Burkholderia Thailandensis, Sudarshan S. Thapa, Ahmed Al-Tohamy, Anne Grove

Faculty Publications

Burkholderia thailandensis is a member of the Burkholderia pseudomallei complex. It encodes the transcription factor MftR, which is conserved among the more pathogenic Burkholderia spp. and previously shown to be a global regulator of gene expression. We report here that a B. thailandensis strain in which the mftR gene is disrupted is more virulent in both Caenorhabditis elegans and onion. The DmftR strain exhibits a number of phenotypes associated with virulence. It is more proficient at forming biofilm, and the arcDABC gene cluster, which has been linked to anaerobic survival and fitness within a biofilm, is upregulated. Swimming and swarming …

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Damage Assessment, Michael M. Khonsari, Lijesh Koottaparambil Nov 2022

Damage Assessment, Michael M. Khonsari, Lijesh Koottaparambil

College of Engineering Patents

Methods of estimating tribological damage described herein include examples where varying power is applied between surfaces engaged in frictional contact. Calculations evaluate power consumed at the relevant frictional contact and temperature values may be gathered to supplement the calculated power. Instantaneous and cumulative assessments of damage are calculated based on that information. Measurements or calculations of electrical power may be used as part of the damage assessment.

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Phase Contrast X-Ray Interferometry, Joyoni Dey, Narayan Bhusal, Leslie Butler, Jonathan P. Dowling, Kyungmin Ham, Varshni Singh Nov 2022

Phase Contrast X-Ray Interferometry, Joyoni Dey, Narayan Bhusal, Leslie Butler, Jonathan P. Dowling, Kyungmin Ham, Varshni Singh

College of Science Patents

A phase contrast X-ray imaging system includes: an illumination source adapted to illuminate a region of interest; a diffraction grating adapted to receive illumination from the illuminated region of interest, the diffraction grating comprising a spatial structure having a first periodicity superimposed with a second periodicity that is different from the first periodicity; and a detector adapted to detect illumination passing through the diffraction grating, wherein the spatial structure is defined by varying height and/or pitch, and wherein the spatial structure imparts a first phase dependence based on the first periodicity and an additional phase dependence based on the second …

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All-Electron, Density-Functional-Based Method For Angle-Resolved Tunneling Ionization In The Adiabatic Regime, Imam S. Wahyutama, Denawakage D. Jayasinghe, François Mauger, Kenneth Lopata, Mette B. Gaarde, Kenneth J. Schafer Nov 2022

All-Electron, Density-Functional-Based Method For Angle-Resolved Tunneling Ionization In The Adiabatic Regime, Imam S. Wahyutama, Denawakage D. Jayasinghe, François Mauger, Kenneth Lopata, Mette B. Gaarde, Kenneth J. Schafer

Faculty Publications

We develop and test a method that integrates many-electron weak-field asymptotic theory (ME-WFAT) [O. I. Tolstikhin, L. B. Madsen, and T. Morishita, Phys. Rev. A 89, 013421 (2014)1050-294710.1103/PhysRevA.89.013421] in the integral representation (IR) into the density-functional-theory (DFT) framework. In particular, we present modifications of the integral formula in the IR ME-WFAT to incorporate the potential terms unique to DFT. By solving an adiabatic rate equation for the angle-resolved ionization yield in our DFT-based ME-WFAT method, we show that the results are in excellent agreement with those of real-time time-dependent density-functional-theory (TDDFT) simulations for NO, OCS, CH3Br, and CH3Cl interacting with …

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High-Resolution Ribosome Profiling Reveals Translational Selectivity For Transcripts In Bovine Preimplantation Embryo Development, Linkai Zhu, Tong Zhou, Rajan Iyyappan, Hao Ming, Michal Dvoran, Yinjuan Wang, Qi Chen, R. Michael Roberts, Andrej Susor, Zongliang Jiang Nov 2022

High-Resolution Ribosome Profiling Reveals Translational Selectivity For Transcripts In Bovine Preimplantation Embryo Development, Linkai Zhu, Tong Zhou, Rajan Iyyappan, Hao Ming, Michal Dvoran, Yinjuan Wang, Qi Chen, R. Michael Roberts, Andrej Susor, Zongliang Jiang

Faculty Publications

High-resolution ribosome fractionation and low-input ribosome profiling of bovine oocytes and preimplantation embryos has enabled us to define the translational landscapes of early embryo development at an unprecedented level. We analyzed the transcriptome and the polysome- and non-polysome-bound RNA profiles of bovine oocytes (germinal vesicle and metaphase II stages) and early embryos at the two-cell, eight-cell, morula and blastocyst stages, and revealed four modes of translational selectivity: (1) selective translation of non-abundant mRNAs; (2) active, but modest translation of a selection of highly expressed mRNAs; (3) translationally suppressed abundant to moderately abundant mRNAs; and (4) mRNAs associated specifically with monosomes. …

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The Uneven Reaction To Combat The Covid-19 Pandemic: Geovisualizing Of Fever Clinics In Mainland China, Guoqi Li, Zhuoshi Lv, Fahui Wang, Gang Chen, Wenjie Sun, Yuting Shi, Sijing Liu Nov 2022

The Uneven Reaction To Combat The Covid-19 Pandemic: Geovisualizing Of Fever Clinics In Mainland China, Guoqi Li, Zhuoshi Lv, Fahui Wang, Gang Chen, Wenjie Sun, Yuting Shi, Sijing Liu

Faculty Publications

The COVID-19 pandemic has exerted unprecedented impacts on the world. Since its onset, China has established a network of fever clinics as an effective strategy to aggressively isolate and screen possible patients with COVID-19 symptoms. This study presents two fever clinic maps that visualize the uneven responses to the COVID-19 pandemic at the city level in mainland China. The maps highlight more resources in the southwest, northwest, east, and south China, and paucity in the far west parts of southwest and northwest China and in the north and northeast China.

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Multiscale Analysis Of Cancer Service Areas In The United States, Changzhen Wang, Tracy Onega, Fahui Wang Nov 2022

Multiscale Analysis Of Cancer Service Areas In The United States, Changzhen Wang, Tracy Onega, Fahui Wang

Faculty Publications

The purpose of delineating Cancer Service Areas (CSAs) is to define a reliable unit of analysis, more meaningful than geopolitical units such as states and counties, for examining geographic variations of the cancer care markets using geographic information systems (GIS). This study aims to provide a multiscale analysis of the U.S. cancer care markets based on the 2014–2015 Medicare claims of cancer-directed surgery, chemotherapy, and radiation. The CSAs are delineated by a scale-flexible network community detection algorithm automated in GIS so that the patient flows are maximized within CSAs and minimized between them. The multiscale CSAs include those comparable in …

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Monitoring Asbestos Mine Remediation Using Airborne Hyperspectral Imaging System: A Case Study Of Jefferson Lake Mine, Us, Yongsik Jeong, Jaehyung Yu, Lei Wang, Huy Hoa Huynh, Hyun Cheol Kim Nov 2022

Monitoring Asbestos Mine Remediation Using Airborne Hyperspectral Imaging System: A Case Study Of Jefferson Lake Mine, Us, Yongsik Jeong, Jaehyung Yu, Lei Wang, Huy Hoa Huynh, Hyun Cheol Kim

Faculty Publications

This study investigated an asbestos mine restoration project using Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) hyperspectral data. The distribution of an abandoned asbestos mine (AAM) and treatment area were analyzed before and after the remediation based on the spectral indices for detecting naturally occurring asbestos (NOA) indicators and encapsulation. The spectral indices were developed for NOA, host rock, and encapsulation by logistic regression models using spectral bands extracted from the random forest algorithm. The detection models mostly used VNIR spectra rather than SWIR and were statistically significant. The overall accuracy of the detection models was approximately 84%. Notably, the detection accuracy …

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Δ34s, Δ18o, And Δ2h-Δ18o As An Approach For Settling The Question Of Groundwater Salinization In Neogene Basins: The North Of Morocco In Focus, Mohammed Elgettafi, Malak Elmeknassi, Abdenabi Elmandour, Mahjoub Himi, Juan M. Lorenzo, Albert Casas Nov 2022

Δ34s, Δ18o, And Δ2h-Δ18o As An Approach For Settling The Question Of Groundwater Salinization In Neogene Basins: The North Of Morocco In Focus, Mohammed Elgettafi, Malak Elmeknassi, Abdenabi Elmandour, Mahjoub Himi, Juan M. Lorenzo, Albert Casas

Faculty Publications

Neogene plains around the Mediterranean basin are characterized by considerable groundwater salinization. Some studies have misidentified seawater intrusion as the main source of salinity. Across northern Morocco, we gathered δ18OSO4 and δ34SSO4 data from coastal and inland aquifers, Messinian marls, and volcanic products. Differences in the isotopic composition between Messinian marls and some groundwater in all aquifer samples indicate that salinization in groundwater is a consequence of dissolution of Messinian evaporite deposits; nevertheless, modern agriculture and wastewater strongly influence depletion in levels of δ34SSO4. Our novel approach enables effective investigation of processes governing salinity …

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Tectonism Of Late Noachian Mars: Surface Signatures From The Southern Highlands, Trishit Ruj, Goro Komatsu, Gene Schmidt, Suniti Karunatillake, Kenji Kawai Nov 2022

Tectonism Of Late Noachian Mars: Surface Signatures From The Southern Highlands, Trishit Ruj, Goro Komatsu, Gene Schmidt, Suniti Karunatillake, Kenji Kawai

Faculty Publications

Upwelling mantle plumes often instigate extensional stress within the continental crust of Earth. When stress exceeds crustal strength, extensional structures develop, reducing the effective stress and trigger magmatic processes at the crust–mantle boundary. However, such processes and their relationship to the formation of many surface structures remain poorly characterized on Mars. We identified a series of extensional structures in the southern highlands of Mars which collectively resemble continental rift zones on Earth. We further characterized these extensional structures and their surrounding region (area of ~1.8 M km2) by determining the surface mineralogy and bulk regional geochemistry of the …

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Setting Up Shop Down South: Gay Visibility And Identity Formation At A New Orleans Bookstore, Katelyn N. Spencer Nov 2022

Setting Up Shop Down South: Gay Visibility And Identity Formation At A New Orleans Bookstore, Katelyn N. Spencer

LSU Master's Theses

Looking specifically at the South’s first gay bookstore, Faubourg Marigny (FM) Books, this thesis will connect the existence of gay literature and space as impetuses of gay community identity within New Orleans. It will use the political, social, and cultural histories of the 1970s through the 2010s to contextualize the gay bookstore as a microcosm of its time and location. In doing so, it will examine how FM Books’ New Orleans location affected its function and its relationship with its community. It will also analyze how the bookstore fit into the city’s history of social tradition and aversion to flagrant …

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We Are All Connected, Behnoush Tavasolinia Nov 2022

We Are All Connected, Behnoush Tavasolinia

LSU Master's Theses

Upon personal reflection, I have discovered that economic, cultural, and social issues have become very important in my life. As an Iranian graphic designer, I used current events and responded to Iranian stories to reflect that people’s problems anywhere in the world affect other people’s lives worldwide. My thesis investigation aims to reveal the global connection with commodities by focusing on Iran’s economic inflation to create a conceptual and visual representation of impacted consumables. Persian rugs and tile designs are the centers of the culture and symbols of the Iranian people. I used graphic design to illustrate tiles utilizing economic …

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Snapshots Of Coastal Ecology During Glacial And Deglacial Intervals: A Multiproxy Assessment Of Northern Gulf Of Mexico Sediment Cores, Kendall Emilie Brome Nov 2022

Snapshots Of Coastal Ecology During Glacial And Deglacial Intervals: A Multiproxy Assessment Of Northern Gulf Of Mexico Sediment Cores, Kendall Emilie Brome

LSU Master's Theses

Terrestrial ecosystems along exposed continental shelves during times of relatively low sea level and glaciation are rarely preserved due to the mechanically erosive nature of marine transgression and regression. In this study, I investigate the geochemical and palynological characteristics of two well-preserved sites in the northern Gulf of Mexico (NGOM) to determine the ecologic settings and subsequent mechanisms of preservation in this region. Both sites contain preserved terrigenous sediments of previously exposed coastal margins; the first is located at the Alabama Underwater Forest (~13 km south of Gulf Shores, AL, at ~15 mbsl), and optically stimulated luminescence dates to 72–56 …

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