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The Interaction Of Rurality And Rare Cancers For Travel Time To Cancer Care, Tracy Onega, Jennifer Alford-Teaster, Chris Leggett, Andrew Loehrer, Julie E. Weiss, Erika L. Moen, Catherine C. Pollack, Fahui Wang Mar 2023

The Interaction Of Rurality And Rare Cancers For Travel Time To Cancer Care, Tracy Onega, Jennifer Alford-Teaster, Chris Leggett, Andrew Loehrer, Julie E. Weiss, Erika L. Moen, Catherine C. Pollack, Fahui Wang

Faculty Publications

Purpose: Geographic access to cancer care is known to significantly impact utilization and outcomes. Longer travel times have negative impacts for patients requiring highly specialized care, such as for rare cancers, and for those in rural areas. Scant population-based research informs geographic access to care for rare cancers and whether rurality impacts that access. Methods: Using Medicare data (2014-2015), we identified prevalent cancers and cancer-directed surgeries, chemotherapy, and radiation. We classified cancers as rare (incidence <6/100,000/year) or common (incidence ≥6/100,000/year) using previously published thresholds and categorized rurality from ZIP code of beneficiary residence. We estimated travel time between beneficiaries and providers for each service based on ZIP code. Descriptive statistics summarized travel time by rare versus common cancers, service type, and rurality. Findings: We included 1,169,761 Medicare beneficiaries (21.9% in nonmetropolitan areas), 87,399; 7.5% had rare cancers, with 9,133,003 cancer-directed services. Travel times for cancer services ranged from approximately 29 minutes (25th percentile) to 68 minutes (75th percentile). Travel times were similar for rare and common cancers overall (median: 45 vs 43 minutes) but differed by service type; 13.4% of surgeries were >2 hours away for rare cancers, compared to 8.3% for common cancers. Increasing rurality disproportionately increased travel time to surgical care for rare compared to …

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Atmospheric Density Inversion Based On Swarm-C Satellite Accelerometer, Lirong Yin, Lei Wang, Jiawei Tian, Zhengtong Yin, Mingzhe Liu, Wenfeng Zheng Mar 2023

Atmospheric Density Inversion Based On Swarm-C Satellite Accelerometer, Lirong Yin, Lei Wang, Jiawei Tian, Zhengtong Yin, Mingzhe Liu, Wenfeng Zheng

Faculty Publications

We used the Swarm-C accelerometer data to invert the orbital atmospheric density in this study. First, the Swarm-C satellite mission data were obtained from the ESA’s public data platform, and preliminary data error correction was performed. This paper refers to the calibration method of GRACE-A satellite accelerometer data. It adds linear temperature correction on the original basis. Moreover, this study’s accelerometer data correction results were compared with the data correction results published by the ESA. In order to explore the influence of light radiation on the accelerometer, we established a geometric model of Swarm-C to simulate the physical shape of …

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Robust Mechanical And Water Responsive Mechanically Adaptive Property Of Physically Cross-Linked Sustainable Nanocellulose Composites, Jinlong Zhang, Qinglin Wu, Bulbul Ahmed, Ioan Negulescu, Rui Zhang Mar 2023

Robust Mechanical And Water Responsive Mechanically Adaptive Property Of Physically Cross-Linked Sustainable Nanocellulose Composites, Jinlong Zhang, Qinglin Wu, Bulbul Ahmed, Ioan Negulescu, Rui Zhang

Faculty Publications

The development of wood derived cellulose nanocrystal (CNCs) based sustainable composites is potential to address the plastic pollution issue. However, because of strong hydrogen bonding interactions inside the CNCs, it is still challenging to obtain composites with satisfied comprehensive performance via the incorporation of CNCs into poly (vinyl alcohol) (PVA) matrix directly, so two strategies combined with dopamine modification, base bath solution and ferric (III) ion treatment were reported to tailor the comprehensive performance of PVA/CNC composites. The comparative study indicated that both of physically cross-linked PDA@CNC/PVA and PVA/CNC composites have obvious improvement in term of mechanical and water resistance …

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Syndepositional Uptake Of Uranium, Molybdenum And Vanadium Into Modern Bahamian Carbonate Sediments During Early Diagenesis, Evan Magette, Adam Turner, Yongbo Peng, Achim D. Herrmann Mar 2023

Syndepositional Uptake Of Uranium, Molybdenum And Vanadium Into Modern Bahamian Carbonate Sediments During Early Diagenesis, Evan Magette, Adam Turner, Yongbo Peng, Achim D. Herrmann

Faculty Publications

Syndepositional diagenesis is a complicating factor when interpreting geochemical proxies in carbonate sedimentary environments. Previous studies have suggested that carbonate deposits may preserve the geochemical and isotopic signatures of seawater that can be used for paleo-redox reconstructions. However, more work is necessary to understand how these trace metals are preserved. The present study examines shallow marine carbonate sediments from the Bahamas to better understand diagenetic effects on trace metal uptake and sequestration. Analysis of diagenetic effects and trace metal uptake follows a multi-method approach, combining sequential extraction, stable isotope analyses, and rare earth elemental analysis. Stable isotopes track bacterial sulfate …

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Machine Learning-Based Surrogate Models And Transfer Learning For Derivative Free Optimization Of Ht-Pem Fuel Cells, Luis A. Briceno-Mena, Christopher G. Arges, Jose A. Romagnoli Mar 2023

Machine Learning-Based Surrogate Models And Transfer Learning For Derivative Free Optimization Of Ht-Pem Fuel Cells, Luis A. Briceno-Mena, Christopher G. Arges, Jose A. Romagnoli

Faculty Publications

Widespread adoption of high-temperature polymer electrolyte membrane electrochemical systems, such as fuel cells (HT-PEMFCs), requires models and computational tools for accurate optimization and guiding new materials for enhancing performance and durability. In this contribution, knowledge-based modelling and data-driven modelling are combined using Few-Shot Learning and implementing an Automated Machine Learning framework for the generation of Machine Learning-based surrogate models. Applicability of the resulting model for derivative-free optimization is demonstrated. Additionally, a way of considering extrapolation in the optimization task is presented. Results show that although extrapolation is needed to achieve better solutions during optimization, it can be monitored and managed. …

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Surface Plasmon Resonance (Spr) Sensor For Cancer Biomarker Detection, Sreyashi Das, Ram Devireddy, Manas Ranjan Gartia Mar 2023

Surface Plasmon Resonance (Spr) Sensor For Cancer Biomarker Detection, Sreyashi Das, Ram Devireddy, Manas Ranjan Gartia

Faculty Publications

A biomarker is a physiological observable marker that acts as a stand-in and, in the best-case scenario, forecasts a clinically significant outcome. Diagnostic biomarkers are more convenient and cost-effective than directly measuring the ultimate clinical outcome. Cancer is among the most prominent global health problems and a major cause of morbidity and death globally. Therefore, cancer biomarker assays that are trustworthy, consistent, precise, and verified are desperately needed. Biomarker-based tumor detection holds a lot of promise for improving disease knowledge at the molecular scale and early detection and surveillance. In contrast to conventional approaches, surface plasmon resonance (SPR) allows for …

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On The Effect Of Environmental Temperature On Fracture Fatigue Entropy, Mohammad A. Amooie, M. M. Khonsari Mar 2023

On The Effect Of Environmental Temperature On Fracture Fatigue Entropy, Mohammad A. Amooie, M. M. Khonsari

Faculty Publications

Fracture behavior of carbon steel 1018 operating in low-temperature environments is investigated. Specifically, fully-reversed bending experimental tests are performed to examine the efficacy of applying the concept of Fracture Fatigue Entropy (FFE) for predicting fatigue life at different environmental temperatures. A large cooling chamber was constructed that houses the entire bending test rig and maintains the environmental temperature at the desired value down to −10 °C. It is shown that under conditions tested, fatigue life improves at lower operating temperatures. Results also reveal that FFE remains nearly constant and can be used for reliable prediction of fatigue life. Illustrative examples …

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Retrofitting Existing Distillation Columns For Improved Energy Efficiency And Increased Capacity, Justin Nijoka Mar 2023

Retrofitting Existing Distillation Columns For Improved Energy Efficiency And Increased Capacity, Justin Nijoka

Honors Capstones

No abstract provided.

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Type I Diabetes Results From Immune Cell Invasion Into Pancreatic Islets, Mary Grace Beck Mar 2023

Type I Diabetes Results From Immune Cell Invasion Into Pancreatic Islets, Mary Grace Beck

Honors Capstones

No abstract provided.

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A New Generation Of Dense-Graded Asphalt Mixtures With Superior Performance Against Stripping And Moisture Damage, Mostafa Elseifi, Zahid Hossain, Md. T.A. Sarkar, Hossam Abohamer, Mohammad Oyan Mar 2023

A New Generation Of Dense-Graded Asphalt Mixtures With Superior Performance Against Stripping And Moisture Damage, Mostafa Elseifi, Zahid Hossain, Md. T.A. Sarkar, Hossam Abohamer, Mohammad Oyan

Publications

The presence of moisture beneath the pavement surface is a matter of great concerns as it is responsible for significant distresses such as asphalt concrete (AC) stripping, fatigue cracking, rutting, and poor durability of asphalt mixes. The objective of this study was to evaluate and recommend an asphalt mixture design that would provide superior performance against AC stripping and cracking. To achieve this objective, a laboratory test factorial was developed to evaluate the use of nanomaterials, emerging anti-stripping agents, warm-mix asphalt technologies, and adhesion promotors. In the experimental program, the modified Lottman test (AASHTO T 283) and the Indirect Tensile …

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Effect Of Nadph Oxidase On The Microbial And Chemical Contamination Of Water, Grace Sheets Mar 2023

Effect Of Nadph Oxidase On The Microbial And Chemical Contamination Of Water, Grace Sheets

Honors Capstones

No abstract provided.

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Chemical-Free Photocatalytic Water Treatment, Ella Sheets Mar 2023

Chemical-Free Photocatalytic Water Treatment, Ella Sheets

Honors Capstones

No abstract provided.

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Electrochemical Reactor For Upgrading Methane And Small Alkanes To Longer Alkanes And Alkenes, Christopher George Arges, John C. Flake, Yuxin Fang Feb 2023

Electrochemical Reactor For Upgrading Methane And Small Alkanes To Longer Alkanes And Alkenes, Christopher George Arges, John C. Flake, Yuxin Fang

College of Engineering Patents

This application relates to new process that utilizes electrodes that incorporate acids that facilitate upgrading of methane and other low molecular weight alkanes to higher order hydrocarbon molecules, such as paraffins, olefins, and aromatics, at temperatures less than 250° C. A primary focus of the invention includes methane conversion to ethylene. The first step of the process includes acid containing electrodes that facilitate the activation of the alkane in the anode layer of the electrochemical reactor. Subsequent steps include the separation of protons from produced longer chain hydrocarbons followed by subsequent electrochemical reduction of the protons to yield hydrogen at …

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Pricing Multi-Asset Contingent Claims In A Multi-Dimensional Binomial Market, Jarek Kedra, Assaf Libman, Victoria Steblovskaya Feb 2023

Pricing Multi-Asset Contingent Claims In A Multi-Dimensional Binomial Market, Jarek Kedra, Assaf Libman, Victoria Steblovskaya

Journal of Stochastic Analysis

No abstract provided.

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Ice-Crystal-Templated “Accordion-Like” Cellulose Nanofiber/Mxene Composite Aerogels For Sensitive Wearable Pressure Sensors, Wangwang Xu, Qinglin Wu, Jaegyoung Gwon, Jin Woo Choi Feb 2023

Ice-Crystal-Templated “Accordion-Like” Cellulose Nanofiber/Mxene Composite Aerogels For Sensitive Wearable Pressure Sensors, Wangwang Xu, Qinglin Wu, Jaegyoung Gwon, Jin Woo Choi

Faculty Publications

Exfoliated MXene nanosheets are integrated with cellulose nanofibers (CNFs) to form composite aerogels with high electric conductivity. The combination of CNFs and MXene nanosheets forms a unique “accordion-like” hierarchical architecture with MXene-CNF pillared layers through ice-crystal templating. Benefiting from the special “layer-strut” structure, the MXene/CNF composite aerogels have low density (50 mg/cm3), excellent compressibility and recoverability, as well as superior fatigue resistance (up to 1000 cycles). When being used as a piezoresistive sensor, the composite aerogel exhibits high sensitivity upon different strains, stable sensing performance with various compressive frequencies, broad detection range, and quick responsiveness (0.48 s). Moreover, the piezoresistive …

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Florawear: Wearable Living Interface, Hye Yeon Nam, Janiece Campbell, Andrew M. Webb, Brendan Harmon Feb 2023

Florawear: Wearable Living Interface, Hye Yeon Nam, Janiece Campbell, Andrew M. Webb, Brendan Harmon

Faculty Publications

While nature can benefit people both mentally and physically, contemporary society has become increasingly disconnected from nature. To rebuild a stronger connection with nature in our everyday life, we introduce FloraWear, a do-it-yourself, wearable living interface, that enables people to easily and closely connect with plants. This pictorial introduces how knowledge is built and shared with others using hybrid craft and fabrication, illustrates the material experiments and design development for FloraWear, and discusses how it affects wearers. Then we summarize how FloraWear can help catalyze a shift in people's perspectives towards nature. By developing emotional ties to their wearable plants, …

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Asprosin Promotes Feeding Through Sk Channel-Dependent Activation Of Agrp Neurons, Bing Feng, Hesong Liu, Ila Mishra, Clemens Duerrschmid, Peiyu Gao, Pingwen Xu, Chunmei Wang, Yanlin He Feb 2023

Asprosin Promotes Feeding Through Sk Channel-Dependent Activation Of Agrp Neurons, Bing Feng, Hesong Liu, Ila Mishra, Clemens Duerrschmid, Peiyu Gao, Pingwen Xu, Chunmei Wang, Yanlin He

Division of Basic Science Faculty Publications

Asprosin, a recently identified adipokine, activates agouti-related peptide (AgRP) neurons in the arcuate nucleus of the hypothalamus (ARH) via binding to protein tyrosine phosphatase receptor δ (Ptprd) to increase food intake. However, the intracellular mechanisms responsible for asprosin/Ptprd-mediated activation of AgRPARH neurons remain unknown. Here, we demonstrate that the small-conductance calcium-activated potassium (SK) channel is required for the stimulatory effects of asprosin/Ptprd on AgRPARH neurons. Specifically, we found that deficiency or elevation of circulating asprosin increased or decreased the SK current in AgRPARH neurons, respectively. AgRPARH-specific deletion of SK3 (an SK channel subtype highly expressed in AgRPARH neurons) blocked asprosin-induced …

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Hybrid Modeling For Electrochemical Systems, Luis Alejandro Briceno-Mena Feb 2023

Hybrid Modeling For Electrochemical Systems, Luis Alejandro Briceno-Mena

LSU Doctoral Dissertations

The discovery of new materials like catalysts, polymeric films, and biomolecules, is driven by industrial needs such as improving reaction or separation selectivity, enhancing therapeutic effects on medical treatments, or reducing costs of replacement. However, deployment of these advances in industrial applications is often hindered by the lack of models needed for design and optimization. Due to the novelty of materials and devices, experimental data and first principles' knowledge are scarce, making it hard to build models either via data-driven or knowledge based approaches. In this context, a way to efficiently combine domain knowledge with data could provide a pathway …

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Analysis And Technical Optimization Of Processing Condition For Better Quality Of Robusta Coffee Production, Usman Ahmad, Khalimatus Sa’Diyah, Sathivel Subramaniam Feb 2023

Analysis And Technical Optimization Of Processing Condition For Better Quality Of Robusta Coffee Production, Usman Ahmad, Khalimatus Sa’Diyah, Sathivel Subramaniam

Faculty Publications

The wet processing of robusta coffee starts with harvesting coffee cherries, followed by sorting the cherries, pulping, fermentation, washing, drying, hard skin hulling, bean sorting, and packaging. Soaking fruit before pulping is an alternative for coffee farmers to delay the pulping process if time does not al-low it. The fermentation process aims to remove mucus that is firmly attached to the hard skin. The addition of L. casei bacteria can accelerate the process but affect the final taste. This study aimed to optimize the duration of soaking and fermentation processes for obtaining coffee beans with a minimum number of unpeeled …

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The Malliavin-Stein Method For Normal Random Walks With Dependent Increments, Ian Flint, Nicolas Privault, Giovanni Luca Torrisi Feb 2023

The Malliavin-Stein Method For Normal Random Walks With Dependent Increments, Ian Flint, Nicolas Privault, Giovanni Luca Torrisi

Journal of Stochastic Analysis

No abstract provided.

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Association Of Metformin With The Development Of Age-Related Macular Degeneration, Amitha Domalpally, Samuel A. Whittier, Qing Pan, Dana M. Dabelea, Christine H. Darwin, William C. Knowler, Christine G. Lee, Jose A. Luchsinger, Neil H. White, Emily Y. Chew, George A. Bray, Kishore M. Gadde, Iris W. Culbert, Jennifer Arceneaux, Annie Chatellier, Amber Dragg, Catherine M. Champagne, Crystal Duncan, Barbara Eberhardt, Frank Greenway, Fonda G. Guillory, April A. Herbert, Michael L. Jeffirs, Betty M. Kennedy, Erma Levy, Monica Lockett, Jennifer C. Lovejoy, Laura H. Morris, Lee E. Melancon, Donna H. Ryan, Deborah A. Sanford, Kenneth G. Smith, Lisa L. Smith, Julia A.St Amant Feb 2023

Association Of Metformin With The Development Of Age-Related Macular Degeneration, Amitha Domalpally, Samuel A. Whittier, Qing Pan, Dana M. Dabelea, Christine H. Darwin, William C. Knowler, Christine G. Lee, Jose A. Luchsinger, Neil H. White, Emily Y. Chew, George A. Bray, Kishore M. Gadde, Iris W. Culbert, Jennifer Arceneaux, Annie Chatellier, Amber Dragg, Catherine M. Champagne, Crystal Duncan, Barbara Eberhardt, Frank Greenway, Fonda G. Guillory, April A. Herbert, Michael L. Jeffirs, Betty M. Kennedy, Erma Levy, Monica Lockett, Jennifer C. Lovejoy, Laura H. Morris, Lee E. Melancon, Donna H. Ryan, Deborah A. Sanford, Kenneth G. Smith, Lisa L. Smith, Julia A.St Amant

Population and Public Health Science Faculty Publications

Importance: Age-related macular degeneration (AMD) is a leading cause of blindness with no treatment available for early stages. Retrospective studies have shown an association between metformin and reduced risk of AMD. Objective: To investigate the association between metformin use and age-related macular degeneration (AMD). Design, Setting, and Participants: The Diabetes Prevention Program Outcomes Study is a cross-sectional follow-up phase of a large multicenter randomized clinical trial, Diabetes Prevention Program (1996-2001), to investigate the association of treatment with metformin or an intensive lifestyle modification vs placebo with preventing the onset of type 2 diabetes in a population at high risk for …

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Survival And Growth Of Triploid Eastern Oysters, Crassostrea Virginica, Produced From Wild Diploids Collected From Low-Salinity Areas, Sarah Bodenstein, Brian R. Callam, William C. Walton, F. Scott Rikard, Terrence R. Tiersch, Jerome F. La Peyre Feb 2023

Survival And Growth Of Triploid Eastern Oysters, Crassostrea Virginica, Produced From Wild Diploids Collected From Low-Salinity Areas, Sarah Bodenstein, Brian R. Callam, William C. Walton, F. Scott Rikard, Terrence R. Tiersch, Jerome F. La Peyre

Faculty Publications

Triploid Eastern oysters have been reported to suffer greater mortalities than diploids when exposed to low-salinity (<5) conditions in the U.S. Gulf of Mexico and Atlantic estuaries. As such, the effect of broodstock parentage was investigated on the low-salinity tolerance of triploid progeny produced by mating diploid females (collected from three Louisiana estuaries differing in salinity regimes) with male tetraploids at two hatcheries. Diploid crosses were also produced using the wild broodstocks to verify expected differences in low-salinity tolerance among diploid progeny and between ploidy levels. All progeny were deployed at low and moderate-salinity (averages of 9.3 and 19.4) field sites to monitor monthly growth and mortality. Sex ratio, gametogenic stage, gonad-to-body ratio, condition index, and Perkinsus marinus infection were also measured periodically at both field sites Although high triploid mortality at the low-salinity site prevented complete analysis, results indicated that diploid parentage had little effect on triploid survival at low salinity. Broodstock parentage affected diploid mortality and growth, although results did not match with predictions made based on historical salinity at broodstock collection sites. Ploidy level had the largest effect on triploid survival and growth followed by the hatchery site where the oysters were produced.

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Enhanced Magnetocaloric Effects In Metastable Phases Of Mn1- X Cox Nige Generated Through Thermal Quenching And High-Pressure Annealing, Tej Poudel Chhetri, Jing Han Chen, Anthony T. Grant, David P. Young, Igor Dubenko, Saikat Talapatra, Naushad Ali, Shane Stadler Feb 2023

Enhanced Magnetocaloric Effects In Metastable Phases Of Mn1- X Cox Nige Generated Through Thermal Quenching And High-Pressure Annealing, Tej Poudel Chhetri, Jing Han Chen, Anthony T. Grant, David P. Young, Igor Dubenko, Saikat Talapatra, Naushad Ali, Shane Stadler

Faculty Publications

Metastable phases were formed in Mn1-xCoxNiGe (x = 0.05 and 0.08) by annealing at 800 °C followed by rapid cooling, i.e., quenching, at ambient pressure (P = 0) and under a pressure of P = 3.5 GPa, and their phase transitions and associated magnetocaloric properties were investigated. The crystal cell volumes of the metastable phases decreased, and their structural transitions significantly shifted to lower temperatures relative to those of the slow-cooled compounds, with a greater reduction observed in the samples where the rapid cooling occurred under high pressures. The magnetic and structural transitions coupled to form a magnetostructural transition in …

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Enhanced Phase Sensitivity In A Mach-Zehnder Interferometer Via Photon Recycling, Dong Li, Chun Hua Yuan, Xiaoping Ma, Qingle Wang, Hwang Lee, Yao Yao, Weiping Zhang Feb 2023

Enhanced Phase Sensitivity In A Mach-Zehnder Interferometer Via Photon Recycling, Dong Li, Chun Hua Yuan, Xiaoping Ma, Qingle Wang, Hwang Lee, Yao Yao, Weiping Zhang

Faculty Publications

We propose an alternative scheme for phase estimation in a Mach-Zehnder interferometer (MZI) with photon recycling. It is demonstrated that with the same coherent-state input and homodyne detection, our proposal possesses a phase sensitivity beyond the traditional MZI. For instance, it can achieve an enhancement factor of ∼9.32 in the phase sensitivity compared with the conventional scheme even with a photon loss of 10% on the photon-recycled arm. From another point of view, the quantum Cramér-Rao bound (QCRB) is also investigated. It is found that our scheme is able to achieve a lower QCRB than the traditional one. Intriguingly, the …

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Atomistic Simulation Studies Of Thin Film Growth And Plastic Deformation In Metals And Metal/Ceramic Nanostructures, Reza Namakian Feb 2023

Atomistic Simulation Studies Of Thin Film Growth And Plastic Deformation In Metals And Metal/Ceramic Nanostructures, Reza Namakian

LSU Doctoral Dissertations

Despite the significant improvements in manufacturing and synthesis processes of metals and ceramics in the past decades, there are still areas in which the procedure is still frequently more of an art or skill rather than a science. Therefore, systematic and combined experimental and computational studies are required to facilitate the development of techniques that offer thorough understanding of the events taking place during manufacturing and synthesis processes. With regard to these issues, it is paramount to address microscale characterizations and atomic scale understanding of the events during fabrication processes. One of the focuses of this study is unraveling fundamental …

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Editorial: Community Series In Research Efforts, Challenges And Opportunities In Mitigating Aflatoxins In Food And Agricultural Crops And Its Global Health Impacts, Volume Ii, Mehdi Razzaghi-Abyaneh, Zhi Yuan Chen, Mahendra Rai, Masoomeh Shams-Ghahfarokhi Feb 2023

Editorial: Community Series In Research Efforts, Challenges And Opportunities In Mitigating Aflatoxins In Food And Agricultural Crops And Its Global Health Impacts, Volume Ii, Mehdi Razzaghi-Abyaneh, Zhi Yuan Chen, Mahendra Rai, Masoomeh Shams-Ghahfarokhi

Faculty Publications

No abstract provided.

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Gamerfit-Asd Beta Test: Adapting An Evidence-Based Exergaming And Telehealth Coaching Intervention For Autistic Youth, Daniel P. Hatfield, Aviva Must, Winston Kennedy, Amanda E. Staiano, James Slavet, Rachael A. Sabelli, Carol Curtin, Linda G. Bandini, Phillip Nauta, Christopher Stuetzle, April B. Bowling Feb 2023

Gamerfit-Asd Beta Test: Adapting An Evidence-Based Exergaming And Telehealth Coaching Intervention For Autistic Youth, Daniel P. Hatfield, Aviva Must, Winston Kennedy, Amanda E. Staiano, James Slavet, Rachael A. Sabelli, Carol Curtin, Linda G. Bandini, Phillip Nauta, Christopher Stuetzle, April B. Bowling

Population and Public Health Science Faculty Publications

Background: Health disparities faced by autistic youth are exacerbated by inadequate physical activity (PA) and sleep, whereas healthy PA and sleep may improve mood and function. Adaptive Game Squad (AGS) is an evidence-based telehealth coaching and exergaming intervention to improve PA and sleep for adolescents with diverse neurodevelopmental and psychiatric conditions. This study aimed to adapt AGS for autistic youth ages 10–15 years; beta-test the modified intervention for feasibility, accessibility, and engagement; and further refine the intervention for a larger planned demonstration pilot. Methods: Interdisciplinary experts adapted AGS to create GamerFit-ASD, a 12-week intervention that included a progressive exergame schedule, …

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Effects Of Neighborhood Disadvantage And Peer Deviance On Conduct Problems: Interactions With Age Of Onset, Courtney Marie Goetz Feb 2023

Effects Of Neighborhood Disadvantage And Peer Deviance On Conduct Problems: Interactions With Age Of Onset, Courtney Marie Goetz

LSU Master's Theses

Youth with conduct problems (CP) generally fall into two developmental classifications, child-onset and adolescent-onset, which exhibit different causal processes and life course trajectories. Research suggests that child-onset CP is more likely to be related to individual predispositions, while adolescent-onset CP is more associated with social factors, such as peer delinquency. Living in impoverished and disorganized neighborhoods increases the risk for associating with deviant peers. Thus, the current study tested the hypothesis that neighborhood factors would be more strongly associated with adolescent-onset CP than child-onset CP, which would be explained by a greater association with deviant peers. Linear and negative binomial …

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A Comprehensive Framework For The Use Of Sugarcane Bagasse Ash As Cement And Sand Replacement In Concrete Materials, Sujata Subedi Feb 2023

A Comprehensive Framework For The Use Of Sugarcane Bagasse Ash As Cement And Sand Replacement In Concrete Materials, Sujata Subedi

LSU Doctoral Dissertations

Sugarcane bagasse ash (BA), an agricultural byproduct, has been suggested as a sustainable material to partially replace cement and sand in traditional concrete. However, the feasibility of using BA in novel concrete materials, such as engineered cementitious composites (ECC) and fiber-reinforced geopolymer composites (FRGC), has not been investigated. Therefore, the objectives of this study are to: (a) characterize the properties of Louisiana BA produced from different methodologies; (b) quantify the influence of BA as supplementary cementitious material (SCM) on concrete properties; (c) assess the feasibility of developing normal- and high-strength ECCs using BA as SCM and fine aggregate, and (d) …

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Temperature Dependent Stacking Fault Free Energy Profiles And Partial Dislocation Separation In Fcc Cu, Reza Namakian, Dorel Moldovan, Thomas D. Swinburne Feb 2023

Temperature Dependent Stacking Fault Free Energy Profiles And Partial Dislocation Separation In Fcc Cu, Reza Namakian, Dorel Moldovan, Thomas D. Swinburne

Faculty Publications

The generalized stacking fault energy profile is fundamental to models of metal plasticity and thus a key parameter for alloy design. However, to account for thermal vibrations, models require the stacking fault free energy profile, but current methods can only calculate metastable intrinsic stacking faults. We show how the full stacking fault free energy profile can be calculated using PAFI, a linear scaling method that fully accounts for anharmonic thermal vibrations. Applying our approach to empirical and machine learning potentials for FCC Cu, we show via direct comparison with molecular dynamics simulations that accounting for temperature effects is essential to …

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