Digital Commons Network^™

Material Quantities And Estimated Construction Costs For New Elevated Irc 2015-Compliant Single-Family Home Foundations, Yamini Kodavatiganti, Md Adilur Rahim, Carol J. Friedland, Rubayet Bin Mostafiz, Arash Taghinezhad, Shandy Heil

Faculty Publications

Residential foundation selection is critical for the lifetime performance of the project, but the type of foundation selected can depend on cost. This study aims to compare the new construction costs of residential slab-on-fill and four types of crawl space foundations for residential projects by quantifying the material quantities for each and exploring the effect of building characteristics on material quantities and total costs. The building characteristics selected are size (139 m2, 186 m2, and 232 m2), footprint aspect ratio (1:1, 1:2.5, and 1:5) and first floor elevation (0 m–1.2 m in 0.3 m increments). We find that material quantities …

Homeowner Flood Risk And Risk Reduction From Home Elevation Between The Limits Of The 100- And 500-Year Floodplains, Ayat Al Assi, Rubayet Bin Mostafiz, Carol J. Friedland, Robert V. Rohli, Md Adilur Rahim

Faculty Publications

Floods inflict significant damage even outside the 100-year floodplain. Thus, restricting flood risk analysis to the 100-year floodplain (Special Flood Hazard Area (SFHA) in the United States of America) is misleading. Flood risk outside the SFHA is often underestimated because of minimal flood-related insurance requirements and regulations and sparse flood depth data. This study proposes a systematic approach to predict flood risk for a single-family home using average annual loss (AAL) in the shaded X Zone–the area immediately outside the SFHA (i.e., the 500-year floodplain), which lies between the limits of the 1.0- and 0.2-percent annual flood probability. To further …

Feasible Delivery System Based On Poly(Lactictide-Co-Glycolide) Nanoparticles Loaded With Antimicrobial Mupirocin For Possible Wound Healing, Ludmila Košarišťanová, Tomáš Komprda, Vendula Popelková, Tatiana Fialová, Pavla Vymazalová, Carlos E. Astete

Faculty Publications

The objective of the study was to assess cytotoxicity (based on the dimethylthiazol– diphenyltetrazolium bromide cell viability assay) and antimicrobial effects of poly(lactictide-co-glycolide) nanoparticles with entrapped mupirocin (PLGA/MUP NPs) on Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) strains using a disk-diffusion method, cryo-scanning electron microscopy (cryo-SEM) and fluorescence microscopy. Based on the evaluation of the growth curve, PLGA/MUP NPs inhibited growth of the both tested strains already at a concentration of 0.29 µg/ml, and their inhibitory effect at concentrations from 0.29 to 1.17 µg/ml was comparable with free MUP using the disk-diffusion method. PLGA/MUP NPs also tended to increase the …

Gcs Site Selection In Saline Miocene Formations In South Louisiana, Muhammad Zulqarnain, Stephen O. Sears, Mehdi Zeidouni, Richard G. Hughes, Douglas Carlson, Carlos F. Rivera

Faculty Publications

One of the key requirements of a commercial scale geologic carbon sequestration (GCS) site selection process is identifying injection sites to safely inject and retain injected CO2 over extended time scales. This requires thorough evaluation of site-specific surface and subsurface features. A site screening and selection framework was developed and used to identify potential sites in South Louisiana, incorporating surface data including site proximity to large CO2 stationary sources, vicinity of large population centres and state lands, land usage, legacy oil and gas wells, and local/regional geologic trends. Regionally the Miocene sediments thicken and dip towards the south, reflecting a …

Resonant Perfect Absorption Yielded By Zero-Area Pulses, Yu He, Zuoye Liu, Christian Ott, Adrian N. Pfeiffer, Shaohua Sun, Mette B. Gaarde, Thomas Pfeifer, Bitao Hu

Faculty Publications

We propose and study the manipulation of the macroscopic transient absorption of an ensemble of open two-level systems via temporal engineering. The key idea is to impose an ultrashort temporal gate on the polarization decay of the system by transient absorption spectroscopy, thus confining its free evolution and the natural reshaping of the excitation pulse. The numerical and analytical results demonstrate that even at moderate optical depths, the resonant absorption of light can be reduced or significantly enhanced by more than 5 orders of magnitude relative to that without laser manipulation. The achievement of the quasicomplete extinction of light at …

Effects Of Riverine Barriers On Avian Evolution In The Amazon Basin, Andre Eugene Moncrieff

LSU Doctoral Dissertations

The high biodiversity found in the Amazon Basin has long captivated the attention of naturalists and evolutionary biologists seeking to explain its origins. Early observations by Alfred Wallace highlighted the role of rivers in delimiting the geographic ranges of many species; furthermore, where rivers narrow towards their headwaters, he noted that some species cross rivers freely. A major goal of this dissertation is to investigate how these and other observations about riverine barriers might inform our understanding of how speciation unfolds in Amazonia. My approach involved generating genomic data with dense geographic sampling for manakins in the genus Lepidothrix, …

A Lagrangian Particle Model With Nesting Capability And Its Application To The Modeling Of Plastics In The Gulf Of Mexico, Weiyuan Dong

LSU Master's Theses

In our study, we refined an offline three-dimensional (3D) Lagrangian model named the Larval TRANSport Lagrangian (LTRANS) model and applied it to the Gulf of Mexico (GOM). Previous research that applied the model within the Texas-Louisiana (TXLA) shelf domain, which released plastics to simulate their trajectories and fate, showed that more than 40% of simulated particles did not reach the land boundaries. Some of those particles were assumed to move out of the TXLA domain. In reality, these particles could also re-enter the TXLA domain due to processes such as tidal excursion, mesoscale eddies and inertial oscillation. However, the model …

Runge-Kutta Methods For Rough Differential Equations, Martin Redmann, Sebastian Riedel

Journal of Stochastic Analysis

No abstract provided.

A Jump-Diffusion Process For Asset Price With Non-Independent Jumps, Yihren Wu, Majnu John

Journal of Stochastic Analysis

No abstract provided.

Effectiveness Of A Community-Based Structured Physical Activity Program For Adults With Type 2 Diabetes: A Randomized Clinical Trial, Aishee B. Mukherji, Di Lu, Feifei Qin, Haley Hedlin, Neil M. Johannsen, Sukyung Chung, Yukari Kobayashi, Francois Haddad, Cynthia Lamendola, Marina Basina, Ruth Talamoa, Jonathan Myers, Latha Palaniappan

Clinical Research Faculty Publications

Importance: The efficacy of physical activity interventions among individuals with type 2 diabetes has been established; however, practical approaches to translate and extend these findings into community settings have not been well explored. Objective: To test the effectiveness of providing varying frequencies of weekly structured exercise sessions to improve diabetes control. Design, Setting, and Participants: The IMPACT (Initiate and Maintain Physical Activity in Communities Trial) study was a controlled randomized clinical trial (randomization occurred from October 2016 to April 2019) that included a 6-month, structured exercise intervention either once or thrice weekly vs usual care (UC; advice only). The exercise …

Wise As You Will Become, Meghan E. Hodges

Comparative Woman

No abstract provided.

Genetic Characterization Of Resitance To Frogeye Leaf Spot Of Soybean, Gabriel D. Munoz Herrera

LSU Master's Theses

Cercospora sojina is the causal agent of the fungal disease frogeye leaf spot (FLS) in soybeans. Management of this disease consists of foliar application of fungicides and the use of resistant cultivars. However, fungicide resistance has been detected in C. sojina populations and characterization of host resistance genes is relatively limited. To overcome the latter obstacle, we aimed to identify novel resistance genes using quantitative image analysis of the SoyNAM population. Two image analysis workflows using ImageJ and PlantCV were optimized and implemented to increase reproducibility and reduce subjectivity. The quantitative measurements included disease severity, lesion count, and average lesion …

Light-Weight Structural Optimization Through Biomimicry, Machine Learning, And Inverse Design, Adithya Challapalli

LSU Doctoral Dissertations

In load-bearing lightweight architectures, cellular materials were frequently utilized. While octahedron, tetrahedron, and octet truss lattice truss were built for lightweight architectures with stretching and flexural dominance, it can be believed that new cells could easily be designed that might perform much better than the present ones in terms of mechanical and architectural characteristics. Machine learning-based structure scouting and design improvisation for better mechanical performance is a growing field of study. Additionally, biomimicry—the science of imitating nature’s elements—offers people a wealth of resources from which to draw motivation as they work to create a better quality of life.

Here, utilizing …

Research Gaps And Opportunities In Precision Nutrition: An Nih Workshop Report, Bruce Y. Lee, José M. Ordovás, Elizabeth J. Parks, Cheryl A.M. Anderson, Albert László Barabási, Steven K. Clinton, Kayla De La Haye, Valerie B. Duffy, Paul W. Franks, Elizabeth M. Ginexi, Kristian J. Hammond, Erin C. Hanlon, Michael Hittle, Emily Ho, Abigail L. Horn, Richard S. Isaacson, Patricia L. Mabry, Susan Malone, Corby K. Martin, Josiemer Mattei, Simin Nikbin Meydani, Lorene M. Nelson, Marian L. Neuhouser, Brendan Parent, Nicolaas P. Pronk, Helen M. Roche, Suchi Saria, Frank A.J.L. Scheer, Eran Segal, Mary Ann Sevick, Tim D. Spector, Linda Van Horn, Krista A. Varady, Venkata Saroja Voruganti

Clinical Research Faculty Publications

Precision nutrition is an emerging concept that aims to develop nutrition recommendations tailored to different people's circumstances and biological characteristics. Responses to dietary change and the resulting health outcomes from consuming different diets may vary significantly between people based on interactions between their genetic backgrounds, physiology, microbiome, underlying health status, behaviors, social influences, and environmental exposures. On 11-12 January 2021, the National Institutes of Health convened a workshop entitled "Precision Nutrition: Research Gaps and Opportunities" to bring together experts to discuss the issues involved in better understanding and addressing precision nutrition. The workshop proceeded in 3 parts: part I covered …

Application Of Distributed Fiber-Optic Sensing For Pressure Predictions And Multiphase Flow Characterization, Gerald Kelechi Ekechukwu

LSU Doctoral Dissertations

In the oil and gas industry, distributed fiber optics sensing (DFOS) has the potential to revolutionize well and reservoir surveillance applications. Using fiber optic sensors is becoming increasingly common because of its chemically passive and non-magnetic interference properties, the possibility of flexible installations that could be behind the casing, on the tubing, or run on wireline, as well as the potential for densely distributed measurements along the entire length of the fiber. The main objectives of my research are to develop and demonstrate novel signal processing and machine learning computational techniques and workflows on DFOS data for a variety of …

Quantization Of The Monotone Poisson Central Limit Theorem, Yungang Lu

Journal of Stochastic Analysis

No abstract provided.

Brief Communication: The Hidden Labyrinth: Deep Groundwater In Wright Valley, Antarctica, Hilary A. Dugan, Peter T. Doran, Denys Grombacher, Esben Auken, Thue Bording, Nikolaj Foged, Neil Foley, Jill Mikucki, Ross A. Virginia, Slawek Tulaczyk

Faculty Publications

Since the 1960s, a deep groundwater system in Wright Valley, Antarctica, has been the hypothesized source of brines to hypersaline Don Juan Pond and Lake Vanda, both of which are rich in calcium and chloride. Modeling studies do not support other possible mechanisms, such as evaporative processes, that could have led to the current suite of ions present in both waterbodies. In 2011 and 2018, an airborne electromagnetic survey was flown over Wright Valley to map subsurface resistivity (down to 600 m) in exploration of liquid water. The surveys revealed widespread unfrozen brine in the subsurface near Lake Vanda, Don …

Incorporation Of Calcium Cyanamide And Straw Reduces Phosphorus Leaching In A Flooded Agricultural Soil, Shuai Zhang, Shuo Chen, Jiawen Jin, Gang Wu, Nanthi S. Bolan, John R. White, Sabry M. Shaheen, Jörg Rinklebe, Qing Chen

Faculty Publications

Calcium cyanamide and straw additions coupled with one-month of flooding conditions can effectively inhibit soil diseases by generating anaerobic conditions and hydrolysing cyanamide during the summer fallow period in agricultural settings. However, the response of soil phosphorus (P) forms and mobility to the calcium cyanamide and straw additions under flooding conditions remain unknown. This study employed column leaching devices to monitor the P fractions and related movement in a flooded soil with six treatments: control, 0.5 g kg⁻¹ calcium cyanamide (CC), 2 g kg⁻¹ straw (S2), 0.5 g kg⁻¹ calcium cyanamide coupled with 2 g kg^{−1 …}

Scientometric Mapping Of Global Research On Green Retrofitting Of Existing Buildings (Greb): Pathway Towards A Holistic Greb Framework, Mershack O. Tetteh, Amos Darko, Albert P.C. Chan, Amirhosein Jafari, Ioannis Brilakis, Weiwei Chen, Gabriel Nani, Sitsofe Kwame Yevu

Faculty Publications

Green retrofitting of existing buildings (GREB) represents one of the best opportunities to reduce global energy consumption and carbon emissions, as well as improve people's health, well-being, and quality of life. It has thus received significant attention from researchers and practitioners over the years, with the proliferation of research works and publications. However, no study has attempted to comprehensively investigate the cumulative theoretical and practical value of this body of knowledge. This study aims to analyze the existing global research on GREB through the lens of a scientometric review technique and to provide pathways for future research. The scientometric mapping …

The Influence Of Forest Management Practices On Seasonal Bat Species Occurrence And Activity At The Kisatchie National Forest In Louisiana, Usa, Jane M. Kunberger, Ashley M. Long

Faculty Publications

In the southeastern United States, where forests are the primary land cover type, understanding how forest stand characteristics and forest management practices influence bat distributions is critical for bat conservation and management. We deployed passive acoustic monitors to record bat calls at sites representing six forest types at the Kisatchie National Forest in central Louisiana during two winter (January–February 2020 and December 2020–February 2021) and two summer (June–August 2020 and 2021) periods. We also collected environmental data at the landscape and local scales to help explain patterns in bat species occurrence. We detected big brown bats (Eptesicus fuscus), eastern red/Seminole …

A Very Luminous Jet From The Disruption Of A Star By A Massive Black Hole, Igor Andreoni, Michael W. Coughlin, Daniel A. Perley, Yuhan Yao, Wenbin Lu, S. Bradley Cenko, Harsh Kumar, Shreya Anand, Anna Y.Q. Ho, Mansi M. Kasliwal, Antonio De Ugarte Postigo, Ana Sagués-Carracedo, Steve Schulze, D. Alexander Kann, S. R. Kulkarni, Jesper Sollerman, Nial Tanvir, Armin Rest, Luca Izzo, Jean J. Somalwar, David L. Kaplan, Tomás Ahumada, G. C. Anupama, Katie Auchettl, Sudhanshu Barway, Eric C. Bellm, Varun Bhalerao, Joshua S. Bloom, Michael Bremer, Mattia Bulla, Eric Burns, Sergio Campana, Poonam Chandra

Faculty Publications

Tidal disruption events (TDEs) are bursts of electromagnetic energy that are released when supermassive black holes at the centres of galaxies violently disrupt a star that passes too close¹. TDEs provide a window through which to study accretion onto supermassive black holes; in some rare cases, this accretion leads to launching of a relativistic jet^2–9, but the necessary conditions are not fully understood. The best-studied jetted TDE so far is Swift J1644+57, which was discovered in γ-rays, but was too obscured by dust to be seen at optical wavelengths. Here we report the optical detection of …

Few-Shot Specific Emitter Identification Via Deep Metric Ensemble Learning, Yu Wang, Guan Gui, Yun Lin, Hsiao Chun Wu, Chau Yuen, Fumiyuki Adachi

Faculty Publications

Specific emitter identification (SEI) is a highly potential technology for physical-layer authentication that is one of the most critical supplements for the upper-layer authentication. SEI is based on radio frequency (RF) features from circuit difference, rather than cryptography. These features are inherent characteristics of hardware circuits, which are difficult to counterfeit. Recently, various deep learning (DL)-based conventional SEI methods have been proposed, and achieved advanced performances. However, these methods are proposed for close-set scenarios with massive RF signal samples for training, and they generally have poor performance under the condition of limited training samples. Thus, we focus on few-shot SEI …

Pnp Maxtools: Autonomous Parameter Control In Maxmsp Utilizing Mir Algorithms, Austin Alexander Franklin

LSU Doctoral Dissertations

This research presents a new approach to computer automation through the implementation of novel real-time music information retrieval algorithms developed for this project. It documents the development of the PnP.Maxtools package, a set of open source objects designed within the popular programming environment MaxMSP. The package is a set of pre/post processing filters, objective and subjective timbral descriptors, audio effects, and other objects that are designed to be used together to compose music or improvise without the use of external controllers or hardware. The PnP.Maxtools package objects are designed to be used quickly and easily using a `plug and play' …

Editors' Introduction, Sophia Ziegler, Leah Powell Duncan

Journal of Critical Digital Librarianship

Introduction to Journal of Critical Digital Librarian, Vol.2 Issue 1

From Mapping Place To Mapping Space In Library Gis Work, Lena Denis

Journal of Critical Digital Librarianship

At many academic libraries, library workers run the teaching, general reference consultations, technical troubleshooting, and software and licensing maintenance in Geographic Information Systems (GIS) for their institutions. This is very much the case in the Data Services unit of Johns Hopkins University’s Sheridan Libraries, where staff receive requests for help with a wide variety of mapping projects every semester. Sometimes they are straightforward requests for technical assistance, but sometimes they underpin much deeper investigations into how to situate people and significant events through time and geographic settings. This article discusses these types of requests in the context of the philosophical …

Leveraging Critical Information Literacy To Develop Social Justice-Minded Data Literacy Competencies, Ben B. Chiewphasa, Matthew L. Sisk

Journal of Critical Digital Librarianship

Librarians who interact with data in different contexts can come together in a community of practice – leveraging each other's perspectives to collectively engage with critical librarianship and reimagine social justice-related learning outcomes for information and data literacy programming. Specifically, this paper explores the overlapping goals of different critical literacies (such as critical information literacy and QuantCrit), showcasing that synergies exist between social justice-oriented librarians with distinctive roles and responsibilities. By leveraging a community of practice as a vehicle for continuing education in inclusive pedagogy, librarians can empower their patrons, students, and colleagues to challenge and act upon surrounding data …

Toward Ethical And Inclusive Descriptive Practices, Shira Peltzman, Kelly Besser

Journal of Critical Digital Librarianship

This case study describes the context which galvanized our Collection Management unit at UCLA Library Special Collections to collectively craft a descriptive practices statement within a study group focused on an anti-oppressive approach to discovery and access. This paper discusses the planning and design of the study group, our direct engagement at meetings, collaborative iteration, and liberatory pedagogical strategies that enabled the statement’s publication, and its impact within our department, library, and beyond. This work speaks to radical descriptive change and provides a potential path for the development of ethical and inclusive descriptive practices at other institutions.

Using Solar Radiation Data In Soil Moisture Diagnostic Equation For Estimating Root-Zone Soil Moisture, Olumide Omotere, Feifei Pan, Lei Wang

Faculty Publications

The soil moisture daily diagnostic equation (SMDE) evaluates the relationship between the loss function coefficient and the summation of the weighted average of precipitation. The loss function coefficient uses the day of the year (DOY) to approximate the seasonal changes in soil moisture loss for a given location. Solar radiation is the source of the energy that drives the complex and intricates of the earth-atmospheric processes and biogeochemical cycles in the environment. Previous research assumed DOY is the approximation of other environmental factors (e.g., temperature, wind speed, solar radiation). In this article, two solar radiation parameters were introduced, i.e., the …

Development Of Functional Markers For Resistance To Smut And Identification Of Genes Differentially Expressed In Response To Brown Rust In Sugarcane, Jose David Cortes

LSU Doctoral Dissertations

Smut, caused by Sporisorium scitamineum and brown rust, caused by Puccinia melanocephala, are two of the most important diseases that affect sugarcane production in Louisiana and worldwide. Smut continues to cause losses in the breeding program in Louisiana. Therefore, a QTL analysis was conducted to identify molecular markers associated with resistance in F₁ progeny (162) of a biparental cross between susceptible cultivar L 99-233 and resistant HoCP 96-540. Using 1,574 single-dose SNP markers, a total of 253 linkage groups (LG) were obtained with a genome coverage of 24,580.15 cM. Six QTLs were localized on five LGs. The highest …

Applications Of A Superposed Ornstein-Uhlenbeck Type Processes, Santatriniaina Avotra Randrianambinina, Julius Esunge

Journal of Stochastic Analysis

No abstract provided.