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Potential Ecological Impacts Of Climate Intervention By Reflecting Sunlight To Cool Earth, P.L. Zarnetske, J. Gurevitch, J. Franklin, P.M. Groffman, C.S. Harrison, J.J. Hellmann, F.M. Hoffman, S. Kothari, A. Robock, S. Tilmes, D. Visioni, J. Wu, L. Xia, C.-E. Yang Jan 2021

Potential Ecological Impacts Of Climate Intervention By Reflecting Sunlight To Cool Earth, P.L. Zarnetske, J. Gurevitch, J. Franklin, P.M. Groffman, C.S. Harrison, J.J. Hellmann, F.M. Hoffman, S. Kothari, A. Robock, S. Tilmes, D. Visioni, J. Wu, L. Xia, C.-E. Yang

Faculty Publications

No abstract provided.

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Effects Of Caloric Restriction On Human Physiological, Psychological, And Behavioral Outcomes: Highlights From Calerie Phase 2, James L. Dorling, Stephan Van Vliet, Kim M. Huffman, William E. Kraus, Manjushri Bhapkar, Carl F. Pieper, Tiffany Stewart, Sai Krupa Das, Susan B. Racette, Susan B. Roberts, Eric Ravussin, Leanne M. Redman, Corby K. Martin Jan 2021

Effects Of Caloric Restriction On Human Physiological, Psychological, And Behavioral Outcomes: Highlights From Calerie Phase 2, James L. Dorling, Stephan Van Vliet, Kim M. Huffman, William E. Kraus, Manjushri Bhapkar, Carl F. Pieper, Tiffany Stewart, Sai Krupa Das, Susan B. Racette, Susan B. Roberts, Eric Ravussin, Leanne M. Redman, Corby K. Martin

Clinical Research Faculty Publications

Caloric restriction (CR) is a strategy that attenuates aging in multiple nonhuman species. The Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy (CALERIE) trials are part of a research program aiming to test the effects of CR on aging and longevity biomarkers in humans. Building on CALERIE phase 1, CALERIE phase 2 (CALERIE 2) was the largest study to date to assess sustained CR in healthy humans without obesity. In a 24-month randomized controlled trial comprising 218 participants at baseline, CALERIE 2 showed that moderate CR, 11.9% on average, induced improvements in aging-related biomarkers without adversely affecting psychological …

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Adipose Depot-Specific Effects Of 16 Weeks Of Pioglitazone On In Vivo Adipogenesis In Women With Obesity: A Randomised Controlled Trial, Ursula White, Mark D. Fitch, Robbie A. Beyl, Marc K. Hellerstein, Eric Ravussin Jan 2021

Adipose Depot-Specific Effects Of 16 Weeks Of Pioglitazone On In Vivo Adipogenesis In Women With Obesity: A Randomised Controlled Trial, Ursula White, Mark D. Fitch, Robbie A. Beyl, Marc K. Hellerstein, Eric Ravussin

Clinical Research Faculty Publications

Aims/hypothesis: In vitro and rodent studies suggest that pioglitazone, a thiazolidinedione, can promote adipogenesis in adipose tissue (AT); however, there is a lack of in vivo studies in humans to support these findings. The objectives of this randomised, placebo-controlled, parallel-arm trial were to test if pioglitazone stimulates in vivo adipogenesis in the subcutaneous adipose tissue depots and if these measures were related to metabolic health outcomes in women with obesity. Methods: Forty-one healthy women with obesity (20 black; 21 white; 29 ± 6 years; BMI 32.0 ± 1.7 kg/m2; 44.0 ± 3.6% body fat) were randomised to consume 30 mg/day …

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Association Between Visit-To-Visit Hba1c Variability And The Risk Of Cardiovascular Disease In Patients With Type 2 Diabetes, Yun Shen, Jian Zhou, Lizheng Shi, Elizabeth Nauman, Peter T. Katzmarzyk, Eboni G. Price-Haywood, Ronald Horswell, Alessandra N. Bazzano, Somesh Nigam, Gang Hu Jan 2021

Association Between Visit-To-Visit Hba1c Variability And The Risk Of Cardiovascular Disease In Patients With Type 2 Diabetes, Yun Shen, Jian Zhou, Lizheng Shi, Elizabeth Nauman, Peter T. Katzmarzyk, Eboni G. Price-Haywood, Ronald Horswell, Alessandra N. Bazzano, Somesh Nigam, Gang Hu

Population and Public Health Science Faculty Publications

Aim: To investigate the association between visit-to-visit HbA1c variability and the risk of cardiovascular disease in patients with type 2 diabetes. Materials and methods: We performed a retrospective cohort study of 29 260 patients with at least four HbA1c measurements obtained within 2 years of their first diagnosis of type 2 diabetes. Different HbA1c variability markers were calculated, including the standard deviation (SD), coefficient of variation (CV) and adjusted SD. Cox proportional hazards regression models were used to estimate the association of these HbA1c variability markers with incident cardiovascular disease. Results: During a mean follow-up of 4.18 years, a total …

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Effects Of Lifestyle Intervention Of Maternal Gestational Diabetes Mellitus On Offspring Growth Pattern Before Two Years Of Age, Jing Li, Jinnan Liu, Cuiping Zhang, Gongshu Liu, Junhong Leng, Leishen Wang, Weiqin Li, Zhijie Yu, Gang Hu, Juliana C.N. Chan, Xilin Yang Jan 2021

Effects Of Lifestyle Intervention Of Maternal Gestational Diabetes Mellitus On Offspring Growth Pattern Before Two Years Of Age, Jing Li, Jinnan Liu, Cuiping Zhang, Gongshu Liu, Junhong Leng, Leishen Wang, Weiqin Li, Zhijie Yu, Gang Hu, Juliana C.N. Chan, Xilin Yang

Population and Public Health Science Faculty Publications

No abstract provided.

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Racial And Workplace Disparities In Seroprevalence Of Sars-Cov-2, Baton Rouge, Louisiana, Usa, Amy K. Feehan, Cruz Velasco, Daniel Fort, Jeffrey H. Burton, Eboni G. Price-Haywood, Peter T. Katzmarzyk, Julia Garcia-Diaz, Leonardo Seoane Jan 2021

Racial And Workplace Disparities In Seroprevalence Of Sars-Cov-2, Baton Rouge, Louisiana, Usa, Amy K. Feehan, Cruz Velasco, Daniel Fort, Jeffrey H. Burton, Eboni G. Price-Haywood, Peter T. Katzmarzyk, Julia Garcia-Diaz, Leonardo Seoane

Population and Public Health Science Faculty Publications

By using paired molecular and antibody testing for severe acute respiratory syndrome coronavirus 2 infection, we determined point prevalence and seroprevalence in Louisiana, USA, during the second phase of reopening. Infections were highly variable by race and ethnicity, work environment, and ZIP code. Census-weighted seroprevalence was 3.6%, and point prevalence was 3.0%.

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Adiposity, Physical Function, And Their Associations With Insulin Resistance, Inflammation, And Adipokines In Ckd, Sankar D. Navaneethan, John P. Kirwan, Erick M. Remer, Erika Schneider, Bryan Addeman, Susana Arrigain, Ed Horwitz, Jeffrey C. Fink, James P. Lash, Charles A. Mckenzie, Mahboob Rahman, Panduranga S. Rao, Jesse D. Schold, Tariq Shafi, Jonathan J. Taliercio, Raymond R. Townsend, Harold I. Feldman, Lawrence J. Appel, Alan S. Go, Jiang He, Robert G. Nelson, Vallabh O. Shah, Mark L. Unruh, James H. Sondheimer Jan 2021

Adiposity, Physical Function, And Their Associations With Insulin Resistance, Inflammation, And Adipokines In Ckd, Sankar D. Navaneethan, John P. Kirwan, Erick M. Remer, Erika Schneider, Bryan Addeman, Susana Arrigain, Ed Horwitz, Jeffrey C. Fink, James P. Lash, Charles A. Mckenzie, Mahboob Rahman, Panduranga S. Rao, Jesse D. Schold, Tariq Shafi, Jonathan J. Taliercio, Raymond R. Townsend, Harold I. Feldman, Lawrence J. Appel, Alan S. Go, Jiang He, Robert G. Nelson, Vallabh O. Shah, Mark L. Unruh, James H. Sondheimer

Division of Basic Science Faculty Publications

Rationale & Objectives: Adiposity and physical fitness levels are major drivers of cardiometabolic risk, but these relationships have not been well-characterized in chronic kidney disease (CKD). We examined the associations of visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), intrahepatic fat, and physical function with inflammation, insulin resistance, and adipokine levels in patients with CKD. Study Design: Prospective cohort study. Setting & Participants: Participants with stages 3-5 CKD not receiving maintenance dialysis, followed up at one of 8 clinical sites in the Chronic Renal Insufficiency Cohort (CRIC) Study, and who underwent magnetic resonance imaging of the abdomen at an annual …

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Combustion By-Products And Their Health Effects: Summary Of The 16th International Congress, Angela Violi, Stephania Cormier, Brian Gullett, Stina Jansson, Slawo Lomnicki, Chloe Luyet, Andreas Mayer, Ralf Zimmermann Jan 2021

Combustion By-Products And Their Health Effects: Summary Of The 16th International Congress, Angela Violi, Stephania Cormier, Brian Gullett, Stina Jansson, Slawo Lomnicki, Chloe Luyet, Andreas Mayer, Ralf Zimmermann

Division of Basic Science Faculty Publications

The 16th International Congress on Combustion By-Products and their Health Effects (PIC2019) was held in Ann Arbor, Michigan, from July 10 to 12, 2019. For the last 28 years, this conference has served as an interdisciplinary platform for the discussion of the formation, environmental fate, health effects, policy, and remediation of combustion by-products. The technical areas for PIC2019 included mobile and stationary sources in urban environments, open fires, in- door air pollution, and halogenated pollutants. The congress was sponsored by the National Institute of Environmental Health Sciences (NIEHS), the U.S. EPA, the School of Public Health at the University of …

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Constrained Learning Of Task-Related And Spatially-Coherent Dictionaries From Task Fmri Data, Sreekrishna Ramakrishnapillai, Harris R. Lieberman, Jennifer C. Rood, Stefan M. Pasiakos, Kori Murray, Preetham Shankapal, Owen T. Carmichael Jan 2021

Constrained Learning Of Task-Related And Spatially-Coherent Dictionaries From Task Fmri Data, Sreekrishna Ramakrishnapillai, Harris R. Lieberman, Jennifer C. Rood, Stefan M. Pasiakos, Kori Murray, Preetham Shankapal, Owen T. Carmichael

Clinical Research Faculty Publications

Dictionary learning and sparse coding techniques overcome limitations of traditional voxel-level analyses of task-based functional magnetic resonance imaging (fMRI) data by identifying broader temporal and spatial patterns of brain activity. However, prior applications of these methods to task-related fMRI data are not simultaneously optimized to find temporal patterns of activity that change in concert with changes in task conditions and spatial patterns that leverage existing neuroscience knowledge. In this study we present a new sparse dictionary learning method that uses prior knowledge of the temporal pattern of task conditions and the locations of brain regions hypothesized to be involved in …

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Estrogen, Brain Structure, And Cognition In Postmenopausal Women, Christina P. Boyle, Cyrus A. Raji, Kirk I. Erickson, Oscar L. Lopez, James T. Becker, H. Michael Gach, Lewis H. Kuller, William Longstreth, Owen T. Carmichael, Brandalyn C. Riedel, Paul M. Thompson Jan 2021

Estrogen, Brain Structure, And Cognition In Postmenopausal Women, Christina P. Boyle, Cyrus A. Raji, Kirk I. Erickson, Oscar L. Lopez, James T. Becker, H. Michael Gach, Lewis H. Kuller, William Longstreth, Owen T. Carmichael, Brandalyn C. Riedel, Paul M. Thompson

Clinical Research Faculty Publications

Declining estrogen levels before, during, and after menopause can affect memory and risk for Alzheimer's disease. Undesirable side effects of hormone variations emphasize a role for hormone therapy (HT) where possible benefits include a delay in the onset of dementia—yet findings are inconsistent. Effects of HT may be mediated by estrogen receptors found throughout the brain. Effects may also depend on lifestyle factors, timing of use, and genetic risk. We studied the impact of self-reported HT use on brain volume in 562 elderly women (71–94 years) with mixed cognitive status while adjusting for aforementioned factors. Covariate-adjusted voxelwise linear regression analyses …

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Christian Nationalism And Views Of Immigrants In The United States: Is The Relationship Stronger For The Religiously Inactive?, Samuel Stroope, Heather M. Rackin, Paul Froese Jan 2021

Christian Nationalism And Views Of Immigrants In The United States: Is The Relationship Stronger For The Religiously Inactive?, Samuel Stroope, Heather M. Rackin, Paul Froese

Faculty Publications

Previous research has shown that Christian nationalism is linked to nativism and immigrant animus, while religious service attendance is associated with pro-immigrant views. The findings highlight the importance of distinguishing between religious ideologies and practices when considering how religion affects politics. Using a national sample of U.S. adults, we analyze immigrant views by measuring levels of agreement or disagreement that undocumented immigrants from Mexico are “mostly dangerous criminals.” We find that Christian nationalism is inversely related to pro-immigrant views for both the religiously active and inactive. However, strongly pro-immigrant views are less likely and anti-immigrant views are more likely among …

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Food And Beverages Promoting Elderly Health: Six Food-Based Dietary Guidelines To Plan Good Mixed Meals For Elderly South Africans, Sanjoy Saha, Upasana Mukherjee, Makenzie Miller, Li Ling Peng, Carin Napier, Heleen Grobbelaar, Wilna Oldewage-Theron Jan 2021

Food And Beverages Promoting Elderly Health: Six Food-Based Dietary Guidelines To Plan Good Mixed Meals For Elderly South Africans, Sanjoy Saha, Upasana Mukherjee, Makenzie Miller, Li Ling Peng, Carin Napier, Heleen Grobbelaar, Wilna Oldewage-Theron

Faculty Publications

Studies have shown that the elderly are at a higher risk of developing malnutrition due to physiological and pathological changes. Several studies have confirmed that older South Africans have insufficient dietary diversity, resulting in nutritional deficiencies. Furthermore, poor and uninformed dietary choices are associated with the development of several diseases and increased mortality. Following the Elderly Food Based Dietary Guidelines (EFBDGs) related to promoting elderly health could ensure that the elderly have an adequate intake of nutritious foods. This paper provides an overview of six FBDGs relating to promoting health and is based on the South African Food Based Dietary …

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Tripbam: Creating Digital Value During The Covid-19 Pandemic, Gabriele Piccoli, Federico Pigni, Barbara Wixom, Joaquin Rodriguez Jan 2021

Tripbam: Creating Digital Value During The Covid-19 Pandemic, Gabriele Piccoli, Federico Pigni, Barbara Wixom, Joaquin Rodriguez

Faculty Publications

TRIPBAM pioneered automated clustered rate monitoring in the hotel industry. As the technology startup prepared for a successful exit that would reward founders, employees, and investors for their success, the coronavirus disease of 2019 (COVID-19) pandemic hit. The case chronicles TRIPBAM’s leadership’s fast reaction and discusses the strategic initiatives the firm put in place to set itself up for a return to growth after the crisis.

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Content Controlled Spectral Indices For Detection Of Hydrothermal Alteration Minerals Based On Machine Learning And Lasso-Logistic Regression Analysis, Kyuhun Shim, Jaehyung Yu, Lei Wang, Sangin Lee, Sang Mo Koh, Bum Han Lee Jan 2021

Content Controlled Spectral Indices For Detection Of Hydrothermal Alteration Minerals Based On Machine Learning And Lasso-Logistic Regression Analysis, Kyuhun Shim, Jaehyung Yu, Lei Wang, Sangin Lee, Sang Mo Koh, Bum Han Lee

Faculty Publications

This article introduced the quantity controlled spectral indices working at mineral contents higher than 5 wt.% for detection of sericite, chlorite, and pyrophyllite, which are the representative alteration minerals of phyllic, propylitic, and advanced argillic hydrothermal alterations. The X-ray diffraction analysis revealed that the samples are mostly pure with minor content of quartz. The absorption features of target minerals showed systematic decrease in absorption depth with decrease in the mineral content, and the changes varied by mineral types. A total of 1253 target mineral spectra and 605 nontarget mineral spectra were classified by a random forest model, which achieved an …

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Stonewall Jackson, Beresford Hope, And The Meaning Of The American Civil War In Britain, Niels Eichhorn Jan 2021

Stonewall Jackson, Beresford Hope, And The Meaning Of The American Civil War In Britain, Niels Eichhorn

Civil War Book Review

Turner "pushes ajar a door previously closed" by situating Civil War memory within a "so-far ignored. . . transnational perspective."

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Colossal Ambitions: Confederate Planning For A Post-Civil War World, Paul D. Escott Jan 2021

Colossal Ambitions: Confederate Planning For A Post-Civil War World, Paul D. Escott

Civil War Book Review

Adrian Brettle pushes "revisionist" interpretations of the Confederate state "another important step farther. Colossal Ambitions is a thorough examination of confident, expansionist ideas about the Confederate future." Learn more about Brettle's book in my interview with him, which you can find on the homepage.

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Editorial: Investigating Black Activism In The Civil War Era, Jeffery Hardin Hobson Jan 2021

Editorial: Investigating Black Activism In The Civil War Era, Jeffery Hardin Hobson

Civil War Book Review

This special thematic issue of the Civil War Book Review is dedicated to recent works that uncover, reveal, and recast the history of Black Americans’ emancipation activism in the Civil War Era. The concept of emancipation carried myriad meanings among nineteenth-century Black Americans, which the scholarship reviewed below reflects. These authors have catalogued nineteenth-century Black Americans’ vibrant and dynamic efforts to emancipate themselves from slavery, to achieve citizenship and its attendant rights, to secure personal safety, to gain social standing, and to attain economic stability. These books emphasize nineteenth-century African Americans possessed a complex political consciousness that was finely tuned …

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Interview: Organizing Freedom: Black Emancipation Activism In The Civil War Midwest, Jennifer Harbour Jan 2021

Interview: Organizing Freedom: Black Emancipation Activism In The Civil War Midwest, Jennifer Harbour

Civil War Book Review

CWBR interview with Dr. Jennifer Harbour, associate professor of Black Studies and Women's and Gender Studies at the University of Nebraska, Omaha, and author of Organizing Freedom: Black Emancipation Activism in the Civil War Midwest, which was published by the Southern Illinois University Press in 2020.

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A Glorious Liberty: Frederick Douglass And The Fight For An Antislavery Constitution, Leigh Fought Jan 2021

A Glorious Liberty: Frederick Douglass And The Fight For An Antislavery Constitution, Leigh Fought

Civil War Book Review

"Root . . . appears more interested in proving that the U.S. Constitution, if interpreted correctly, was not a document that would permit racism, especially once abolitionists had prevailed with the Thirteenth, Fourteenth, and Fifteenth Amendments. The narrative has very little to say about Frederick Douglass, following the highlights of pro- or anti-slavery moments in relation to the Constitution more than the ebb and flow of Douglass’s ideas. Douglass appears less as a man with complex thinking processes that developed over time and in response to multiple factors than as an icon supplying optimistic quotes about the Constitution as a …

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Once We Were Slaves: The Extraordinary Journey Of A Multi-Racial Jewish Family, Julie Winch Jan 2021

Once We Were Slaves: The Extraordinary Journey Of A Multi-Racial Jewish Family, Julie Winch

Civil War Book Review

By tracing the family tree of a multiracial Jewish family in the Atlantic world, Leibman shows how "Racial identity, cultural affinity, faith and family ties counted for so much (and so little) in different settings and to different people," in a work that "resembles a huge mosaic. Each piece is beautifully crafted."

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The Magnitude And Climate Sensitivity Of Isotopic Fractionation From Ablation Of Antarctic Dry Valley Lakes, A. W. Bellagamba, M. Berkelhammer, L. Winslow, P. T. Doran, K. F. Myers, S. Devlin, I. Hawes Jan 2021

The Magnitude And Climate Sensitivity Of Isotopic Fractionation From Ablation Of Antarctic Dry Valley Lakes, A. W. Bellagamba, M. Berkelhammer, L. Winslow, P. T. Doran, K. F. Myers, S. Devlin, I. Hawes

Faculty Publications

There has been extensive research on the effects of evaporation on the isotopic ratio of lacustrine and marine water bodies; however, there are limited data on how ablation or sublimation from lake or sea ice influences the isotopic ratio of the residual water body. This is a challenging problem because there remains uncertainty on the magnitude of fractionation during sublimation and because ablation can involve mixed-phase processes associated with simultaneous sublimation, melting, evaporation, and refreezing. This uncertainty limits the ability to draw quantitative inferences on changing hydrological budgets from stable isotope records in arctic, Antarctic, and alpine lakes. Here, we …

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Characterisation Of Nano-Assemblies Inside Mesopores Using Neutron Scattering*, Yingzhen Ma, William T. Heller, Lilin He, William A. Shelton, Gernot Rother, Bhuvnesh Bharti Jan 2021

Characterisation Of Nano-Assemblies Inside Mesopores Using Neutron Scattering*, Yingzhen Ma, William T. Heller, Lilin He, William A. Shelton, Gernot Rother, Bhuvnesh Bharti

Faculty Publications

Adsorption of molecular and nanoscale matter in mesoporous materials is important in filtration and chromatography as well as membrane processes. However, the morphology and distribution of self-assembled structures of adsorbate formed within nanoconfined environments is largely unknown. Small Angle Neutron Scattering (SANS) with porous matrix matching the neutron scattering length density of the solvent has the potential to provide detailed information on the self-assemblies formed in pore spaces. However, analysis of such SANS profiles remains a challenge. In this study, we extend the SANS analysis method previously developed by Findenegg and co-workers to include interparticle correlations, providing a qualitative characterisation …

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Effects Of Dilution And Pressure On Combustion Characteristics Within Externally Heated Micro-Tubes, Seyed Navid Roohani Isfahani, Vinicius M. Sauer, Ingmar Schoegl Jan 2021

Effects Of Dilution And Pressure On Combustion Characteristics Within Externally Heated Micro-Tubes, Seyed Navid Roohani Isfahani, Vinicius M. Sauer, Ingmar Schoegl

Faculty Publications

This study investigates the impact of pressure and dilution on combustion behavior of C2H6/air/N2 mixtures within an externally heated micro-tube using both experimental and analytical techniques. Experiments are conducted for pressures up to 10 bar at multiple dilution levels and document three flame regimes, i.e. weak flames, FREI and normal flames. Characteristic temperatures for flame stabilization, as well as ignition and extinction are obtained by applying a novel thin filament pyrometry method (TFP), which uses a thin silicon carbide (SiC) filament that enables temperature measurements for both reacting and non-reacting cases. Results show a decrease of characteristic temperatures with increasing …

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An Open-Source Code For Fluid Flow Simulations In Unconventional Fractured Reservoirs, B Wang, C Fidelibus Jan 2021

An Open-Source Code For Fluid Flow Simulations In Unconventional Fractured Reservoirs, B Wang, C Fidelibus

Faculty Publications

In this article, an open-source code for the simulation of fluid flow, including adsorption, transport, and indirect hydromechanical coupling in unconventional fractured reservoirs is described. The code leverages cutting-edge numerical modeling capabilities like automatic differentiation, stochastic fracture modeling, multicontinuum modeling, and discrete fracture models. In the fluid mass balance equation, specific physical mechanisms, unique to organic-rich source rocks, are included, like an adsorption isotherm, a dynamic permeability-correction function, and an Embedded Discrete Fracture Model (EDFM) with fracture-to-well connectivity. The code is validated against an industrial simulator and applied for a study of the performance of the Barnett shale reservoir, where …

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Distributed Load Testing By Modeling And Simulating User Behavior, Chester Ira Parrott Dec 2020

Distributed Load Testing By Modeling And Simulating User Behavior, Chester Ira Parrott

LSU Doctoral Dissertations

Modern human-machine systems such as microservices rely upon agile engineering practices which require changes to be tested and released more frequently than classically engineered systems. A critical step in the testing of such systems is the generation of realistic workloads or load testing. Generated workload emulates the expected behaviors of users and machines within a system under test in order to find potentially unknown failure states. Typical testing tools rely on static testing artifacts to generate realistic workload conditions. Such artifacts can be cumbersome and costly to maintain; however, even model-based alternatives can prevent adaptation to changes in a system …

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Experiential Statistics: A Case Study In Favor Of Using Project-Based Learning To Advance Preliminary Statistics Content Knowledge In The Algebra I And Geometry Classroom, Trey Michael Earle Dec 2020

Experiential Statistics: A Case Study In Favor Of Using Project-Based Learning To Advance Preliminary Statistics Content Knowledge In The Algebra I And Geometry Classroom, Trey Michael Earle

LSU Doctoral Dissertations

Preparing secondary students for college entrance requirements and the expectations of the job market, a market which is actively seeking the employees who are most qualified to take on jobs that require data analysis skills, is becoming increasingly important. Federal, state, and local education administrators and personnel must rewrite many of the general education curricula to incorporate data organization, collection, manipulation, application, and analysis in order to better prepare students for the expectations of college entrance and an ever-changing employment market. From a purely pedagogical standpoint, while traditional educational structure has been commonplace for decades in the United States, projects …

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Salt Marsh Elevation Limit Determined After Subsidence From Hydrologic Change And Hydrocarbon Extraction, R. Eugene Turner, Yu Mo Dec 2020

Salt Marsh Elevation Limit Determined After Subsidence From Hydrologic Change And Hydrocarbon Extraction, R. Eugene Turner, Yu Mo

Faculty Publications

Levee construction aboveground and hydrocarbon removal from belowground in coastal wetlands can create hydrologic changes that increase plant stress through flooding. But the significance of the subsidence they cause individually or in combination is contested. This study untangled them to demonstrate elevational limits of salt marshes by studying dredged and natural waterways in two salt marshes in Louisiana, USA. The areas had a homogenous plant cover before drilling for oil and gas extraction peaked in the 1960s, and now are a mixed network of natural waterways and dredged canals used to drill wells with an average drill date of 1965.8 …

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Primordial Scalar Power Spectrum From The Hybrid Approach In Loop Cosmologies, Bao Fei Li, Javier Olmedo, Parampreet Singh, Anzhong Wang Dec 2020

Primordial Scalar Power Spectrum From The Hybrid Approach In Loop Cosmologies, Bao Fei Li, Javier Olmedo, Parampreet Singh, Anzhong Wang

Faculty Publications

We compare the primordial scalar power spectra in the loop cosmological models using the effective dynamics of the hybrid approach to cosmological perturbations in which the background is loop quantized, but the perturbations are Fock quantized. The three loop cosmological models under consideration are the standard loop quantum cosmology (LQC), the modified LQC-I (mLQC-I) and the modified LQC-II (mLQC-II) in the spatially flat Friedmann-Lemaître-Robertson-Walker universe with a Starobinsky potential. These models arise from different regularizations of the classical Hamiltonian constraint in the symmetry reduced spacetimes and aim to capture certain features of quantization in loop quantum gravity. When applying the …

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Magnetic Order And Fluctuations In The Quasi-Two-Dimensional Planar Magnet Sr(Co1-Xnix)2as2, Yaofeng Xie, Yu Li, Zhiping Yin, Rui Zhang, Weiyi Wang, Matthew B. Stone, Huibo Cao, D. L. Abernathy, Leland Harriger, David P. Young, J. F. Ditusa, Pengcheng Dai Dec 2020

Magnetic Order And Fluctuations In The Quasi-Two-Dimensional Planar Magnet Sr(Co1-Xnix)2as2, Yaofeng Xie, Yu Li, Zhiping Yin, Rui Zhang, Weiyi Wang, Matthew B. Stone, Huibo Cao, D. L. Abernathy, Leland Harriger, David P. Young, J. F. Ditusa, Pengcheng Dai

Faculty Publications

We use neutron scattering to investigate spin excitations in Sr(Co1-xNix)2As2, which has a c-axis incommensurate helical structure of the two-dimensional (2D) in-plane ferromagnetic (FM) ordered layers for 0.013=x=0.25. By comparing the wave vector and energy dependent spin excitations in helical ordered Sr(Co0.9Ni0.1)2As2 and paramagnetic SrCo2As2, we find that Ni doping, while increasing lattice disorder in Sr(Co1-xNix)2As2, enhances quasi-2D FM spin fluctuations. However, our band structure calculations within the combined density functional theory and dynamic mean field theory (DFT+DMFT) failed to generate a correct incommensurate wave vector for the observed helical order from nested Fermi surfaces. Since transport measurements reveal increased …

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Bilite: A Bayesian Randomized Phase Ii Design For Immunotherapy By Jointly Modeling The Longitudinal Immune Response And Time-To-Event Efficacy, Beibei Guo, Yong Zang Dec 2020

Bilite: A Bayesian Randomized Phase Ii Design For Immunotherapy By Jointly Modeling The Longitudinal Immune Response And Time-To-Event Efficacy, Beibei Guo, Yong Zang

Faculty Publications

Immunotherapy—treatments that target a patient's immune system—has attracted considerable attention in cancer research. Its recent success has led to generation of novel immunotherapeutic agents that need to be evaluated in clinical trials. Two unique features of immunotherapy are the immune response and the fact that some patients may achieve long-term durable response. In this article, we propose a two-arm Bayesian adaptive randomized phase II clinical trial design for immunotherapy that jointly models the longitudinal immune response and time-to-event efficacy (BILITE), with a fraction of patients assumed to be cured by the treatment. The longitudinal immune response is modeled using hierarchical …

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