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Cross-Sectional Associations Between The Neighborhood Built Environment And Physical Activity In A Rural Setting: The Bogalusa Heart Study, Jeanette Gustat, Christopher E. Anderson, Queendaleen C. Chukwurah, Maeve E. Wallace, Stephanie T. Broyles, Lydia A. Bazzano Sep 2020

Cross-Sectional Associations Between The Neighborhood Built Environment And Physical Activity In A Rural Setting: The Bogalusa Heart Study, Jeanette Gustat, Christopher E. Anderson, Queendaleen C. Chukwurah, Maeve E. Wallace, Stephanie T. Broyles, Lydia A. Bazzano

Population and Public Health Science Faculty Publications

Background: Insufficient physical activity (PA) is a common health risk and more prevalent in rural populations. Few studies have assessed relationships between the built environment and PA in rural settings, and community policy guidance to promote PA through built environment interventions is primarily based on evidence from urban studies. Methods: Participants in the Bogalusa Heart Study, a longitudinal study in rural Louisiana, with International Physical Activity Questionnaire data from 2012 to 2013 and a valid residential address (N = 1245) were included. PA was summarized as the number of weekly metabolic equivalent (MET)-minutes of total, transportation, and leisure time PA. …

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Effect Of Oxidation Level On The Interfacial Water At The Graphene Oxide-Water Interface: From Spectroscopic Signatures To Hydrogen-Bonding Environment, Rolf David, Aashish Tuladhar, Le Zhang, Christopher Arges, Revati Kumar Sep 2020

Effect Of Oxidation Level On The Interfacial Water At The Graphene Oxide-Water Interface: From Spectroscopic Signatures To Hydrogen-Bonding Environment, Rolf David, Aashish Tuladhar, Le Zhang, Christopher Arges, Revati Kumar

Faculty Publications

Copyright © 2020 American Chemical Society. The interfacial region of the graphene oxide (GO)-water system is nonhomogenous due to the presence of two distinct domains: an oxygen-rich surface and a graphene-like region. The experimental vibrational sum-frequency generation (vSFG) spectra are distinctly different for the fully oxidized GO-water interface as compared to the reduced GO-water case. Computational investigations using ab initio molecular dynamics were performed to determine the molecular origins of the different spectroscopic features. The simulations were first validated by comparing the simulated vSFG spectra to those from the experiment, and the contributions to the spectra from different hydrogen bonding …

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Phosphoregulation Of The Cytokinetic Protein Fic1 Contributes To Fission Yeast Growth Polarity Establishment, K. Adam Bohnert, Anthony M. Rossi, Quan Wen Jin, Jun Song Chen, Kathleen L. Gould Sep 2020

Phosphoregulation Of The Cytokinetic Protein Fic1 Contributes To Fission Yeast Growth Polarity Establishment, K. Adam Bohnert, Anthony M. Rossi, Quan Wen Jin, Jun Song Chen, Kathleen L. Gould

Faculty Publications

© 2020. Published by The Company of Biologists Ltd. Cellular polarization underlies many facets of cell behavior, including cell growth. The rod-shaped fission yeast Schizosaccharomyces pombe is a well-established, genetically tractable system for studying growth polarity regulation. S. pombe cells elongate at their two cell tips in a cell cycle-controlled manner, transitioning from monopolar to bipolar growth in interphase when new ends established by the most recent cell division begin to extend. We previously identified cytokinesis as a critical regulator of new end growth and demonstrated that Fic1, a cytokinetic factor, is required for normal polarized growth at new ends. …

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Effect Of Oxidation Level On The Interfacial Water At The Graphene Oxide-Water Interface: From Spectroscopic Signatures To Hydrogen-Bonding Environment, Rolf David, Aashish Tuladhar, Le Zhang, Christopher Arges, Revati Kumar Sep 2020

Effect Of Oxidation Level On The Interfacial Water At The Graphene Oxide-Water Interface: From Spectroscopic Signatures To Hydrogen-Bonding Environment, Rolf David, Aashish Tuladhar, Le Zhang, Christopher Arges, Revati Kumar

Faculty Publications

The interfacial region of the graphene oxide (GO)-water system is nonhomogenous due to the presence of two distinct domains: an oxygen-rich surface and a graphene-like region. The experimental vibrational sum-frequency generation (vSFG) spectra are distinctly different for the fully oxidized GO-water interface as compared to the reduced GO-water case. Computational investigations using ab initio molecular dynamics were performed to determine the molecular origins of the different spectroscopic features. The simulations were first validated by comparing the simulated vSFG spectra to those from the experiment, and the contributions to the spectra from different hydrogen bonding environments and interfacial water orientations were …

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Readiness To Change And Smoking Expectancies Among Adult Male Substance Users Currently In Substance Use Treatment, Aaron French Waters Sep 2020

Readiness To Change And Smoking Expectancies Among Adult Male Substance Users Currently In Substance Use Treatment, Aaron French Waters

LSU Doctoral Dissertations

The primary aims of the current study were to examine if smoking expectancies and readiness to quit smoking, important components in predicting smoking behavior and cessation, changed across time for adult smokers in substance use treatment. Participants (N = 51) were predominantly white (96.1%), adult, male smokers who were admitted to residential substance use treatment. Smoking outcome expectancies and readiness to change smoking were assessed among participants at treatment entry (n = 51), and subsequently at 30 days (n = 13), 60 days (n = 9), and 90 days (n = 3) from treatment entry. …

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Point-Of-Care Devices For Therapeutic, Medical And Environmental Applications, Alisha Prasad Sep 2020

Point-Of-Care Devices For Therapeutic, Medical And Environmental Applications, Alisha Prasad

LSU Doctoral Dissertations

Point-of-care testing (POCT) or Point-of-use (POU) devices or technologies are defined as testing aids that are capable for onsite use or testing. The key advantages of POCT are low sample volume, quick onsite diagnosis, high accuracy, and cost-effectiveness. POCT has the potential and the benefits to facilitate better health care management by rapid routine diagnosis and monitoring. To reach this goal, several researchers as well as the healthcare industry over a few years have conducted cutting edge research to bring science to technology by developing smart diagnostic devices capable of performing as per patient profiles and make personalized health care …

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Modeling The Spatial Dynamics Of Marsh Ponds In New England Salt Marshes, G. Mariotti, A. C. Spivak, S. Y. Luk, G. Ceccherini, M. Tyrrell, M. Eagle Gonneea Sep 2020

Modeling The Spatial Dynamics Of Marsh Ponds In New England Salt Marshes, G. Mariotti, A. C. Spivak, S. Y. Luk, G. Ceccherini, M. Tyrrell, M. Eagle Gonneea

Faculty Publications

Ponds are common features on salt marshes, yet it is unclear how they affect large-scale marsh evolution. We developed a spatially explicit model that combines cellular automata for pond formation, expansion, and drainage, and partial differential equations for elevation dynamics. We use the mesotidal Barnstable marsh (MA, USA) as a case study, for which we measured pond expansion rate by remote sensing analysis over a 41-year time span. We estimated pond formation rate by comparing observed and modeled pond size distribution, and predicted pond deepening by comparing modeled and measured pond depth. The Barnstable marsh is currently in the pond …

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A 5200-Year Paleoecological And Geochemical Record Of Coastal Environmental Changes And Shoreline Fluctuations In Southwestern Louisiana: Implications For Coastal Sustainability, Qiang Yao, Kam Biu Liu, Alejandro Antonio Aragón-Moreno, Erika Rodrigues, Y. Jun Xu, Nina S. Lam Sep 2020

A 5200-Year Paleoecological And Geochemical Record Of Coastal Environmental Changes And Shoreline Fluctuations In Southwestern Louisiana: Implications For Coastal Sustainability, Qiang Yao, Kam Biu Liu, Alejandro Antonio Aragón-Moreno, Erika Rodrigues, Y. Jun Xu, Nina S. Lam

Faculty Publications

This study presents a 5200-year history of coastal environmental changes and shoreline fluctuations based on a multi-proxy sedimentary record developed from the eastern end of Louisiana's Chenier Plain. Palynological, loss-on ignition, grain-size, and X-ray fluorescence data for a 525 cm sedimentary core indicate five stages of ecosystem development in the Rockefeller Wildlife Refuge since the mid-Holocene. Between 5190 and 4240 cal yr BP, the relative sea-level was much lower than the present level, and our study area was occupied by a baldcypress swamp. When the Sale-Cypremont subdelta complex formed at a western position approximately 4600 years ago, our study area …

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A Reenvisioned Agricultural System In Thailand: The Growth In Human Capital Experienced By Agriculturalists After Adoption Of The Sufficiency Economic Philosophy, Alexis C. Agard, Richie Roberts Sep 2020

A Reenvisioned Agricultural System In Thailand: The Growth In Human Capital Experienced By Agriculturalists After Adoption Of The Sufficiency Economic Philosophy, Alexis C. Agard, Richie Roberts

Faculty Publications

No abstract provided.

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Quantum-Limited Squeezed Light Detection With A Camera, Elisha S. Matekole, Savannah L. Cuozzo, Nikunjkumar Prajapati, Narayan Bhusal, Hwang Lee, Irina Novikova, Eugeniy E. Mikhailov, Jonathan P. Dowling, Lior Cohen Sep 2020

Quantum-Limited Squeezed Light Detection With A Camera, Elisha S. Matekole, Savannah L. Cuozzo, Nikunjkumar Prajapati, Narayan Bhusal, Hwang Lee, Irina Novikova, Eugeniy E. Mikhailov, Jonathan P. Dowling, Lior Cohen

Faculty Publications

We present a technique for squeezed light detection based on direct imaging of the displaced-squeezed-vacuum state using a CCD camera. We show that the squeezing parameter can be accurately estimated using only the first two moments of the recorded pixel-to-pixel photon fluctuation statistics, with accuracy that rivals that of the standard squeezing detection methods such as a balanced homodyne detection. Finally, we numerically simulate the camera operation, reproducing the noisy experimental results with low signal samplings and confirming the theory with high signal samplings.

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Erratum: The Genome Sequence Of The Grape Phylloxera Provides Insights Into The Evolution, Adaptation, And Invasion Routes Of An Iconic Pest (Bmc Biology (2020) 18 (90) Doi: 10.1186/S12915-020-00820-5), Claude Rispe, Fabrice Legeai, Paul D. Nabity, Rosa Fernández, Arinder K. Arora, Patrice Baa-Puyoulet, Celeste R. Banfill, Leticia Bao, Miquel Barberà, Maryem Bouallègue, Anthony Bretaudeau, Jennifer A. Brisson, Federica Calevro, Pierre Capy, Olivier Catrice, Thomas Chertemps, Carole Couture, Laurent Delière, Angela E. Douglas, Keith Dufault-Thompson, Paula Escuer, Honglin Feng, Astrid Forneck, Toni Gabaldón, Roderic Guigó, Frédérique Hilliou, Silvia Hinojosa-Alvarez, Yi Min Hsiao, Sylvie Hudaverdian, Emmanuelle Jacquin-Joly, Edward B. James, Spencer Johnston, Benjamin Joubard Sep 2020

Erratum: The Genome Sequence Of The Grape Phylloxera Provides Insights Into The Evolution, Adaptation, And Invasion Routes Of An Iconic Pest (Bmc Biology (2020) 18 (90) Doi: 10.1186/S12915-020-00820-5), Claude Rispe, Fabrice Legeai, Paul D. Nabity, Rosa Fernández, Arinder K. Arora, Patrice Baa-Puyoulet, Celeste R. Banfill, Leticia Bao, Miquel Barberà, Maryem Bouallègue, Anthony Bretaudeau, Jennifer A. Brisson, Federica Calevro, Pierre Capy, Olivier Catrice, Thomas Chertemps, Carole Couture, Laurent Delière, Angela E. Douglas, Keith Dufault-Thompson, Paula Escuer, Honglin Feng, Astrid Forneck, Toni Gabaldón, Roderic Guigó, Frédérique Hilliou, Silvia Hinojosa-Alvarez, Yi Min Hsiao, Sylvie Hudaverdian, Emmanuelle Jacquin-Joly, Edward B. James, Spencer Johnston, Benjamin Joubard

Faculty Publications

Following publication of the original article [1], the authors identified an error in Fig. 4. The error was made in the x-axis labels of the three panels, which were noted as “pairwise dN/dS”. The figure represents distributions of dS, so the labels were corrected as “pairwise dS”. The correct Fig. 4 is given below. (Figure Presented).

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Young Adults' Short-Term Trajectories Of Moderate Physical Activity: Relations With Self-Evaluation Processes, Alex .. Garn, Kelly L. Simonton Sep 2020

Young Adults' Short-Term Trajectories Of Moderate Physical Activity: Relations With Self-Evaluation Processes, Alex .. Garn, Kelly L. Simonton

Faculty Publications

Young adults face numerous barriers that can undermine their engagement in healthy behaviors. For example, young adults on average experience disproportionally large declines in physical activity (PA) participation compared to other demographic groups. Self-evaluation processes may help explain these declines. This study investigated young adults' weekly trajectories of moderate physical activity, exploring self-evaluation processes, including self-efficacy and shame as time-varying covariates. A total of 71 young adults (Mage = 21.25,SD= 1.18; 55% male) reported moderate physical activity, exercise self-efficacy, and anticipated shame toward exercise once a week for 5 weeks. Latent growth curve models showed that a linear slope fit …

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Sensitivity And Performance Of The Advanced Ligo Detectors In The Third Observing Run, A. Buikema, C. Cahillane, G. L. Mansell, C. D. Blair, 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, J. Betzwieser, D. Bhattacharjee, G. Billingsley, S. Biscans, R. M. Blair, N. Bode, P. Booker, R. Bork, A. Bramley, A. F. Brooks, D. D. Brown Sep 2020

Sensitivity And Performance Of The Advanced Ligo Detectors In The Third Observing Run, A. Buikema, C. Cahillane, G. L. Mansell, C. D. Blair, 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, J. Betzwieser, D. Bhattacharjee, G. Billingsley, S. Biscans, R. M. Blair, N. Bode, P. Booker, R. Bork, A. Bramley, A. F. Brooks, D. D. Brown

Faculty Publications

On April 1st, 2019, the Advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), joined by the Advanced Virgo detector, began the third observing run, a year-long dedicated search for gravitational radiation. The LIGO detectors have achieved a higher duty cycle and greater sensitivity to gravitational waves than ever before, with LIGO Hanford achieving angle-averaged sensitivity to binary neutron star coalescences to a distance of 111 Mpc, and LIGO Livingston to 134 Mpc with duty factors of 74.6% and 77.0% respectively. The improvement in sensitivity and stability is a result of several upgrades to the detectors, including doubled intracavity power, the addition of …

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Machine Intelligence For Nerve Conduit Design And Production, Caleb E. Stewart, Chin Fung Kelvin Kan, Brody R. Stewart, Henry W. Sanicola Iii, Jangwook P. Jung, Olawale A. R. Sulaiman, Dadong Wang Sep 2020

Machine Intelligence For Nerve Conduit Design And Production, Caleb E. Stewart, Chin Fung Kelvin Kan, Brody R. Stewart, Henry W. Sanicola Iii, Jangwook P. Jung, Olawale A. R. Sulaiman, Dadong Wang

Faculty Publications

Nerve guidance conduits (NGCs) have emerged from recent advances within tissue engineering as a promising alternative to autografts for peripheral nerve repair. NGCs are tubular structures with engineered biomaterials, which guide axonal regeneration from the injured proximal nerve to the distal stump. NGC design can synergistically combine multiple properties to enhance proliferation of stem and neuronal cells, improve nerve migration, attenuate inflammation and reduce scar tissue formation. The aim of most laboratories fabricating NGCs is the development of an automated process that incorporates patient-specific features and complex tissue blueprints (e.g. neurovascular conduit) that serve as the basis for more complicated …

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Avoided Quantum Criticality In Exact Numerical Simulations Of A Single Disordered Weyl Cone, Justin H. Wilson, David A. Huse, S. Das Sarma, J. H. Pixley Sep 2020

Avoided Quantum Criticality In Exact Numerical Simulations Of A Single Disordered Weyl Cone, Justin H. Wilson, David A. Huse, S. Das Sarma, J. H. Pixley

Faculty Publications

Existing theoretical works differ on whether three-dimensional Dirac and Weyl semimetals are stable to a short-range-correlated random potential. Numerical evidence suggests the semimetal to be unstable, while some field-theoretic instanton calculations have found it to be stable. The differences go beyond method: the continuum field-theoretic works use a single, perfectly linear Weyl cone, while numerical works use tight-binding lattice models which inherently have band curvature and multiple Weyl cones. In this work, we bridge this gap by performing exact numerics on the same model used in analytic treatments, and we find that all phenomena associated with rare regions near the …

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Cyclic Topology Enhancing Structural Ordering And Stability Of Comb-Shaped Polypeptoid Thin Films Against Melt-Induced Dewetting, Naisheng Jiang, Jianxia Chen, Tianyi Yu, Albert Chao, Liying Kang, Ying Wu, Kangmin Niu, Ruipeng Li, Masafumi Fukuto, Donghui Zhang Sep 2020

Cyclic Topology Enhancing Structural Ordering And Stability Of Comb-Shaped Polypeptoid Thin Films Against Melt-Induced Dewetting, Naisheng Jiang, Jianxia Chen, Tianyi Yu, Albert Chao, Liying Kang, Ying Wu, Kangmin Niu, Ruipeng Li, Masafumi Fukuto, Donghui Zhang

Faculty Publications

Copyright © 2020 American Chemical Society. We investigated the effect of cyclic chain topology on the molecular ordering and thermal stability of comb-shaped polypeptoid thin films on silicon (Si) substrates. Cyclic and linear poly(N-decylglycine) (PNDG) bearing long n-decyl side chains were synthesized by ring-opening polymerization of N-decylglycine-derived N-carboxyanhydrides. When the spin-coated thin films were subjected to thermal annealing at temperatures above the melting temperature (T > Tm), the cyclic PNDG films exhibited significantly enhanced stability against melt-induced dewetting than the linear counterparts (l-PNDG). When recrystallized at temperatures below the crystallization temperature (T < Tc), the homogeneous c-PNDG films exhibit enhanced crystalline ordering relative to the macroscopically dewetted l-PNDG films. Both cyclic and linear PNDG molecules adopt cis-amide conformations in the crystalline film, which transition into trans-amide conformations upon melting. A top-down solvent leaching treatment of both l/c-PNDG films revealed the formation of an irreversibly physisorbed monolayer with similar thickness (ca. 3 nm) on the Si substrate. The physisorbed monolayers are more disordered relative to the respective thicker crystalline films for both cyclic and linear PNDGs. Upon heating above Tm, the adsorbed c-PNDG chains adopt trans-amide backbone conformation identical with the free c-PNDG molecules in the molten film. By contrast, the backbone conformations of l-PNDG chains in the adsorbed layers are notably different from those of the free chains in the molten film. We postulate that the conformational disparity between the chains in the physically adsorbed layers versus the free chains in the molten film is an important factor to account for the difference in the thermal stability of PNDG thin films. These findings highlight the use of cyclic chain topology to suppress the melt-induced dewetting in polymer thin films.

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Exchangeably Weighted Bootstraps Of Martingale Difference Arrays Under The Uniformly Integrable Entropy, Salim Bouzebda, Nikolaos Limnios Sep 2020

Exchangeably Weighted Bootstraps Of Martingale Difference Arrays Under The Uniformly Integrable Entropy, Salim Bouzebda, Nikolaos Limnios

Journal of Stochastic Analysis

No abstract provided.

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Β-Cell Function Or Insulin Resistance Was Associated With The Risk Of Type 2 Diabetes Among Women With Or Without Obesity And A History Of Gestational Diabetes, Yuxin Fan, Leishen Wang, Huikun Liu, Shuang Zhang, Huiguang Tian, Yun Shen, Jaakko Tuomilehto, Zhijie Yu, Xilin Yang, Gang Hu, Ming Liu Sep 2020

Β-Cell Function Or Insulin Resistance Was Associated With The Risk Of Type 2 Diabetes Among Women With Or Without Obesity And A History Of Gestational Diabetes, Yuxin Fan, Leishen Wang, Huikun Liu, Shuang Zhang, Huiguang Tian, Yun Shen, Jaakko Tuomilehto, Zhijie Yu, Xilin Yang, Gang Hu, Ming Liu

Population and Public Health Science Faculty Publications

Introduction To evaluate the single association of postpartum β-cell dysfunction and insulin resistance (IR), as well as different combinations of postpartum β-cell dysfunction, IR, obesity, and a history of gestational diabetes mellitus (GDM) with postpartum type 2 diabetes risk. Research design and methods The study included 1263 women with prior GDM and 705 women without GDM. Homeostatic model assessment was used to estimate homeostatic model assessment of β-cell secretory function (HOMA-%β) and homeostatic model assessment of insulin resistance (HOMA-IR). Results Multivariable-adjusted ORs of diabetes across quartiles of HOMA-%β and HOMA-IR were 1.00, 1.46, 2.15, and 6.25 (p trend < 0.001), and 1.00, 2.11, 5.59, and 9.36 (p trend < 0.001), respectively. Women with IR only had the same diabetes risk as women with β-cell dysfunction only. Obesity, together with IR or β-cell dysfunction, had a stronger effect on diabetes risk. This stronger effect was also found for a history of GDM with IR or β-cell dysfunction. Women with three risk factors, including obesity, a history of GDM and β-cell dysfunction/IR, showed the highest ORs of diabetes. Conclusions β-cell dysfunction or IR was significantly associated with postpartum diabetes. IR and β-cell dysfunction, together with obesity and a history of GDM, had the highest ORs of postpartum diabetes risk.

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Gw190521: A Binary Black Hole Merger With A Total Mass Of 150 M, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda Sep 2020

Gw190521: A Binary Black Hole Merger With A Total Mass Of 150 M, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda

Faculty Publications

On May 21, 2019 at 03:02:29 UTC Advanced LIGO and Advanced Virgo observed a short duration gravitational-wave signal, GW190521, with a three-detector network signal-to-noise ratio of 14.7, and an estimated false-alarm rate of 1 in 4900 yr using a search sensitive to generic transients. If GW190521 is from a quasicircular binary inspiral, then the detected signal is consistent with the merger of two black holes with masses of 85-14+21 Mm and 66-18+17 Mm (90% credible intervals). We infer that the primary black hole mass lies within the gap produced by (pulsational) pair-instability supernova processes, with only a 0.32% probability of …

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Security Analysis Of The Anonabox Pro, Devi Sowjanya Vempati Sep 2020

Security Analysis Of The Anonabox Pro, Devi Sowjanya Vempati

LSU Master's Theses

The security posture of critical network appliances, such as routers, switches, and firewalls, is crucial as these devices provide the first line of defense against malicious actors. As there is typically no endpoint security software, such as anti-virus available for these devices, it is crucial that vendors release timely updates for vulnerabilities and that customers apply them quickly. The research effort documented in this thesis describes a developed methodology for triaging known vulnerabilities in network devices, assessing the security posture of device vendors, and locating likely weak points in released firmware images. To highlight this methodology, the Anonabox security appliance …

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Historical Changes In Planform Geometry Of The Amite And Comite Rivers And Implications On Flood Routing, Kathleen E. Harris Sep 2020

Historical Changes In Planform Geometry Of The Amite And Comite Rivers And Implications On Flood Routing, Kathleen E. Harris

LSU Master's Theses

The Amite River Basin is a 2,220 square-mile basin spanning from southwest Mississippi through southeast Louisiana, encompassing Baton Rouge and its suburbs. In response to historic flooding in August 2016 and other major flood events in the past several decades, the basin has been the subject of a number of studies to quantify the impacts of changes in land-use and reduction in river length and sinuosity. However, there have yet to be relationships defined between the changes in the historical river planform and the resulting flow, stages, and subsequent flood depths. River lengths and sinuosity were measured from the 1930s …

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Search For Advanced Ligo Single Interferometer Compact Binary Coalescence Signals In Coincidence With Gamma-Ray Events In Fermi-Gbm, C. Stachie, T. Dal Canton, E. Burns, N. Christensen, R. Hamburg, M. Briggs, J. Broida, A. Goldstein, F. Hayes, T. Littenberg, P. Shawhan, J. Veitch, P. Veres, C. A. Wilson-Hodge Sep 2020

Search For Advanced Ligo Single Interferometer Compact Binary Coalescence Signals In Coincidence With Gamma-Ray Events In Fermi-Gbm, C. Stachie, T. Dal Canton, E. Burns, N. Christensen, R. Hamburg, M. Briggs, J. Broida, A. Goldstein, F. Hayes, T. Littenberg, P. Shawhan, J. Veitch, P. Veres, C. A. Wilson-Hodge

Faculty Publications

Presented is the description of a new and general method used to search for γ-ray counterparts to gravitational-wave (GW) triggers. This method is specifically applied to single GW detector triggers. Advanced LIGO data from observing runs O1 and O2 were analyzed, thus each GW trigger comes from either the LIGO-Livingston or the LIGO-Hanford interferometer. For each GW trigger, Fermi Gamma-ray burst monitor data is searched and the most significant subthreshold signal counterpart is selected. Then, a methodology is defined in order to establish which of the GW-γ-ray trigger pairs are likely to have a common origin. For that purpose an …

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On An Asset Model Of Hobson-Rogers Type, Narn-Rueih Shieh Sep 2020

On An Asset Model Of Hobson-Rogers Type, Narn-Rueih Shieh

Journal of Stochastic Analysis

No abstract provided.

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The Life And Death And Consequences Of Canals And Spoil Banks In Salt Marshes, R. Eugene Turner, Erick M. Swenson Sep 2020

The Life And Death And Consequences Of Canals And Spoil Banks In Salt Marshes, R. Eugene Turner, Erick M. Swenson

Faculty Publications

We describe the consequence and demise of levees (spoil banks) built from dredging canals in Louisiana salt marshes using morphometric measurements made over 30 years, soil collections on the spoil bank and in the salt marshes behind, and complementary observations from other areas. These measurements were used to determine the temporal bounds of how long spoil banks last and if salt marsh soils remaining in salt marshes are affected. If the rates of changes in spoil bank morphology continue, then the estimated life time of the shrub-tree vegetation at a representative spoil bank is 81 years, the spoil bank width …

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Potential Pollen Evidence For The 1933 M 7.5 Diexi Earthquake And Implications For Post-Seismic Landscape Recovery, Hongyan Xu, Hanchao Jiang, Kam-Biu Liu, Ning Zhong Sep 2020

Potential Pollen Evidence For The 1933 M 7.5 Diexi Earthquake And Implications For Post-Seismic Landscape Recovery, Hongyan Xu, Hanchao Jiang, Kam-Biu Liu, Ning Zhong

Faculty Publications

The relationships between strong earthquakes, landslides, and vegetation destruction and the process of post-seismic recovery in tectonically active alpine valley areas have not been adequately documented. Here we show detailed pollen study results from a swamp located near the epicenter of the 1933 M 7.5 Diexi earthquake in eastern Qinghai-Tibetan Plateau (QTP) to reveal the impact of earthquake on vegetation, and the post-seismic recovery process. Based on(210)Pb-Cs-137 age model, the seismic event layer is well constrained. The earthquake event corresponds stratigraphically to a zone with the lowest pollen concentrations, the lowest pollen diversity, and a high frequency of non-arboreal pollen. …

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Optical Properties Using Adaptive Selection Of Nir/Swir Reflectance Correction And Quasi-Analytic Algorithms For The Modis-Aqua In Estuarine-Ocean Continuum: Application To The Northern Gulf Of Mexico, Ishan D. Joshi, Eurico J. D'Sa Sep 2020

Optical Properties Using Adaptive Selection Of Nir/Swir Reflectance Correction And Quasi-Analytic Algorithms For The Modis-Aqua In Estuarine-Ocean Continuum: Application To The Northern Gulf Of Mexico, Ishan D. Joshi, Eurico J. D'Sa

Faculty Publications

An adaptive selection of the near/shortwave infrared (NIR/SWIR) reflectance correction and the quasi-analytic algorithms (QAAs) is proposed for the Moderate Resolution Imaging Spectroradiometer (MODIS-Aqua) to utilize the strengths of different correction algorithms and QAAs in a single satellite scene with water types ranging from turbid coastal to clear open ocean waters. A blended satellite product is generated by merging three atmospheric-correction algorithms(AD-ATCOR): 1) iterative NIR correction; 2) management unit of the north sea mathematical models (MUMM); and 3) SWIR, using a spectral threshold-based selection for different water types. The validation analysis of a blended remote sensing reflectance product showed overall …

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Tropical Cyclone Landfall Frequency And Large-Scale Environmental Impacts Along Karstic Coastal Regions (Yucatan Peninsula, Mexico), Victor H. Rivera-Monroy, Luis M. Farfan, Luis Brito-Castillo, Jorge Cortes-Ramos, Eduardo Gonzalez-Rodriguez, Eurico D'Sa, Jorge I. Euan-Avila Sep 2020

Tropical Cyclone Landfall Frequency And Large-Scale Environmental Impacts Along Karstic Coastal Regions (Yucatan Peninsula, Mexico), Victor H. Rivera-Monroy, Luis M. Farfan, Luis Brito-Castillo, Jorge Cortes-Ramos, Eduardo Gonzalez-Rodriguez, Eurico D'Sa, Jorge I. Euan-Avila

Faculty Publications

Tropical cyclones (TCs) are natural systems that develop over ocean basins and are key components of the atmospheric activity during the warm season. However, there are still knowledge gaps about the combined positive and negative TC impacts on the structure and function of coastal socio-ecosystems. Using remote sensing tools, we analyzed the frequency, trajectory, and intensity of 1894 TCs from 1851-2019 to identify vulnerable "hotspots" across the Yucatan Peninsula (YP), Mexico. A total of 151 events hit the YP, with 96% of landings on the eastern coast. We focused on three major hurricanes (Emily and Wilma, 2005; Dean, 2007) and …

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Natural Environment And Childhood Obesity: A Systematic Review, Robert Rohli Sep 2020

Natural Environment And Childhood Obesity: A Systematic Review, Robert Rohli

Faculty Publications

No abstract provided.

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Creating Collaborative Subject Guides For Multi-Insitutional Digital Collection: A Case Study From The Louisiana Digital Library, Sl Ziegler, Leah Powell Sep 2020

Creating Collaborative Subject Guides For Multi-Insitutional Digital Collection: A Case Study From The Louisiana Digital Library, Sl Ziegler, Leah Powell

Faculty Publications

This case study focuses on the development of subject guides for the Louisiana Digital Library (LDL), a state-wide digital repository for digital cultural heritage. While subject guides are always important for navigating large collections, during the state-wide shutdown of libraries due to the COVID-19 pandemic, the need for the guides was greater than ever. In keeping with the LDL’s multi-institutional and collaborative nature, representatives from seven Louisiana-based institutions responded to an open call to form a rapid-response working group. Within three weeks, ten guides were developed and published. Equally important, an iterative workflow for building and updating guides was established …

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No, You Go First: Phenotype And Social Context Affect House Sparrow Neophobia: Social Learning Can Persist In Sparrows, T. R. Kelly, M. G. Kimball, K. R. Stansberry, C. R. Lattin Sep 2020

No, You Go First: Phenotype And Social Context Affect House Sparrow Neophobia: Social Learning Can Persist In Sparrows, T. R. Kelly, M. G. Kimball, K. R. Stansberry, C. R. Lattin

Faculty Publications

© 2020 The Author(s). Novel object trials are commonly used to assess aversion to novelty (neophobia), and previous work has shown neophobia can be influenced by the social environment, but whether the altered behaviour persists afterwards (social learning) is largely unknown in wild animals. We assessed house sparrow (Passer domesticus) novel object responses before, during and after being paired with a conspecific of either similar or different behavioural phenotype. During paired trials, animals housed with a similar or more neophobic partner demonstrated an increased aversion to novel objects. This change did not persist a week after unpairing, but neophobia decreased …

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