Digital Commons Network^™

Quantization Of The Boolean Poisson Central Limit Theorem And A Generalized Boolean Bernoulli Sequence, Yungang Lu

Journal of Stochastic Analysis

No abstract provided.

Hd-Tdcs Of Primary And Higher-Order Motor Cortex Affects Action Word Processing, Karim Johari, Nicholas Riccardi, Svetlana Malyutina, Mirage Modi, Rutvik H. Desai

Faculty Publications

The contribution of action-perception systems of the brain to lexical semantics remains controversial. Here, we used high-definition transcranial direct current stimulation (HD-tDCS) in healthy adults to examine the role of primary (left hand motor area; HMA) and higher-order (left anterior inferior parietal lobe; aIPL) action areas in action-related word processing (action verbs and manipulable nouns) compared to non-action-related control words (non-action verbs and non-manipulable nouns). We investigated stimulation-related effects at three levels of semantic processing: subliminal, implicit, and explicit. Broadly, we found that stimulation of HMA and aIPL resulted in relative facilitation of action-related language processing compared to non-action. HMA …

A First-Passage Problem For Exponential Integrated Diffusion Processes, Mario Lefebvre

Journal of Stochastic Analysis

No abstract provided.

Editorial: Quantum Light For Imaging, Sensing And Spectroscopy, Roberto De J. León-Montiel, Mario A. Quiroz-Juárez, Omar S. Magaña-Loaiza, Juan P. Torres

Faculty Publications

No abstract provided.

Unsupervised Summarization Of Privacy Concerns In Mobile Application Reviews, Fahimeh Ebrahimi, Anas Mahmoud

Faculty Publications

The proliferation of mobile applications (app) over the past decade has imposed unprecedented challenges on end-users privacy. Apps constantly demand access to sensitive user information in exchange for more personalized services. These - mostly unjustifiable - data collection tactics have raised major privacy concerns among mobile app users. Such concerns are commonly expressed in mobile app reviews, however, they are typically overshadowed by more generic categories of user feedback, such as app reliability and usability. This makes extracting user privacy concerns manually, or even using automated tools, a challenging and time-consuming task. To address these challenges, in this paper, we …

Degumming Of Hemp Fibers Using Combined Microwave Energy And Deep Eutectic Solvent Treatment, Bulbul Ahmed, Qinglin Wu, Hai Lin, Jaegyoung Gwon, Ioan Negulescu, Bruce Cameron

Faculty Publications

Hemp bast fibers were degummed using combined microwave energy (MWE) and deep eutectic solvent (DES) to generate pure hemp cellulose fibers for potential textile applications. The properties of the degummed fibers were investigated and compared with those of the alkali-treated fibers using several analytical techniques. Results revealed that hemp fiber surface underwent dramatic structural disruption during the pretreatment, due to the removal of “gummy” compounds (i.e., pectin, oil, wax, etc.), lignin, and amorphous cellulose. The treated fibers had much enhanced thermal stability due to the removal of the gummy materials. The reduced enthalpy (171.34 J/g) of MWE-DES treated fibers at …

Pest Population Dynamics Are Related To A Continental Overwintering Gradient, Douglas Lawton, Anders S. Huseth, George G. Kennedy, Amy C. Morey, William D. Hutchison, Dominic D. Reisig, Seth J. Dorman, De Shae Dillard, Robert C. Venette, Russell L. Groves, John J. Adamczyk, Izailda Barbosa Dos Santos, Tracey Baute, Sebe Brown, Eric Burkness, Ashley Dean, Galen P. Dively, Hélène B. Doughty, Shelby J. Fleischer, Jessica Green, Jeremy K. Greene, Krista Hamilton, Erin Hodgson, Thomas Hunt, David Kerns, Billy Rogers Leonard, Sean Malone, Fred Musser, David Owens, John C. Palumbo, Silvana Paula-Moraes, Julie A. Peterson, Ricardo Ramirez

Faculty Publications

Overwintering success is an important determinant of arthropod populations that must be considered as climate change continues to influence the spatiotemporal population dynamics of agricultural pests. Using a long-term monitoring database and biologically relevant overwintering zones, we modeled the annual and seasonal population dynamics of a common pest, Helicoverpa zea (Boddie), based on three overwintering suitability zones throughout North America using four decades of soil temperatures: the southern range (able to persist through winter), transitional zone (uncertain overwintering survivorship), and northern limits (unable to survive winter). Our model indicates H. zea population dynamics are hierarchically structured with continental-level effects that …

Discovery And Validation Of Grain Shape Loci In U.S. Rice Germplasm Through Haplotype Characterization, Brijesh Angira, Tommaso Cerioli, Adam N. Famoso

Faculty Publications

Rice grain shape is a major determinant of rice market value and the end-use. We mapped quantitative trait loci (QTL) for grain shape traits in a bi-parental recombinant inbred line population (Trenasse/Jupiter) and discovered two major grain length QTLs—qGL3.1 and qGL7.1. Previously, a major grain shape gene GS3 was reported in the qGL3.1 region and grain length gene GL7 was reported to be encompassing qGL7.1 locus. The re-sequencing SNP data on the International Rice Research Institute (IRRI) 3K Rice Genome Project (RGP) panel were obtained from the IRRI SNP-Seek database for both genes and haplotype diversity was characterized for each …

Effects Of Sensory Cues On Product Acceptability And Consumer Perceptions, Emotions, And Behavior, Cristhiam Gurdian Curran

LSU Doctoral Dissertations

Visual and cognitive cues can affect overall liking (OL) and consumer perceptions, emotions, and behavior. The first study explored the effect of product color difference on the liking, perception, and purchase intent (PI) of cheese-flavored-tortilla chips (CFTC) formulations (A and B) on serving plates (plastic, foam, and paper). Color differences between formulations influenced crunchiness and saltiness liking and perception, which together with overall flavor liking and formulation, mainly determined CFTC OL. Although having similar fracturability (N) and sodium content, formulation A had higher crunchiness and saltiness likings. PI was influenced by crunchiness, saltiness, and OF liking with 37, 49, and …

Impact Of Extreme Heatwaves On Population Exposure In China Due To Additional Warming, Leibin Wang, Robert V. Rohli, Qigen Lin, Shaofei Jin, Xiaodong Yan

Faculty Publications

Extreme heatwaves are among the most important climate-related disasters affecting public health. Assessing heatwave-related population exposures under different warming scenarios is critical for climate change adaptation. Here, the Coupled Model Intercomparison Project phase 6 (CMIP6) multi-model ensemble output results are applied over several warming periods in the Intergovernmental Panel on Climate Change AR6 report, to estimate China’s future heatwave population exposure under 1.5 °C and 2.0 °C warming scenarios. Our results show a significant increase in projected future annual heatwave days (HD) under both scenarios. With an additional temperature increase of 0.5 °C to 2.0 °C of warming, by mid-century …

The Double-Edged Sword Of Safety Training For Safety Behavior: The Critical Role Of Psychological Factors During Covid-19, Xin Ning, Jiwen Huang, Chunlin Wu, Tong Liu, Chao Wang

Faculty Publications

Safety training (ST) is the primary means of avoiding unsafe behaviors, but it has not achieved the expected impact on improving workplace safety because of the high psychological stress it brings to workers. The coronavirus disease 2019 (COVID-19) further threatens workers’ psychological conditions, thereby diminishing the effectiveness of ST. However, the existing literature has mainly laid emphasis on the bright side of ST and neglected examining its impact on safety behavior (SB) from detrimental psychological factors. Drawing from the conservation of resources theory, a novel two-staged model was established to understand how these psychological factors mediate and moderate the association …

Spatiotemporal Patterns Of Male And Female White-Tailed Deer On A Hunted Landscape, Dylan G. Stewart, William D. Gulsby, Stephen S. Ditchkoff, Bret A. Collier

Faculty Publications

Resource selection in sexually dimorphic ungulates is at least partially explained by sex-specific resource requirements and risk aversion strategies. Females generally spend more time in areas with less risk and abundant, high-quality forage due to their smaller body size. However, demographically variable responses to risk are context dependent, and few have concurrently quantified male and female behavior within areas with the same resource base. We captured 111 (54 males, 57 females) adult white-tailed deer (Odocoileus virginianus) from 2009 to 2018 on a site in South Carolina, USA, where hunters were the primary source of adult mortality. We fit each deer …

Defining Relative Yield For Soil Test Correlation And Calibration Trials In The Fertilizer Recommendation Support Tool, Austin W. Pearce, Nathan A. Slaton, Sarah E. Lyons, Carl H. Bolster, Tom W. Bruulsema, John H. Grove, John D. Jones, Josh M. Mcgrath, Fernando E. Miguez, Nathan O. Nelson, Deanna L. Osmond, Md Rasel Parvej, Eugenia M. Pena-Yewtukhiw, John T. Spargo

Faculty Publications

The Fertilizer Recommendation Support Tool (FRST) will perform correlations between soil nutrient concentrations and crop response to fertilization from user-selected datasets in the FRST national database. Yield response for the nutrient of interest in a particular site-year is presented as relative yield (RY), a ratio of unfertilized yield to the maximum attainable yield (A). Several methods exist in the literature for estimating A and calculating RY but the effect of method choice on soil test correlation outcomes is undocumented. We used six published methods to calculate RY from site-year yield data for five published correlation datasets, and fit a generalized …

Reference Staffing And Scheduling Models In Archives And Special Collections: A Survey Analysis Of Prepandemic Practices, Amanda K. Hawk

Faculty Publications

Reference services form the core function of any type of library. Even when faced with shrinking budgets and staff sizes, library and archives workers continue to provide reference services to meet the demands of researchers. Yet a critical analysis of the internal systems used for archival and special collections reference work is lacking compared to the robust body of research about users of collection materials. This article presents findings from a national survey about reference staffing and scheduling models in archival and special collections repositories conducted immediately prior to the onset of the COVID-19 pandemic. The survey data revealed specific …

High-Dimensional Encryption In Optical Fibers Using Spatial Modes Of Light And Machine Learning, Michelle L.J. Lollie, Fatemeh Mostafavi, Narayan Bhusal, Mingyuan Hong, Chenglong You, Roberto De J. León-Montiel, Omar S. Magaña-Loaiza, Mario A. Quiroz-Juárez

Faculty Publications

The ability to engineer the spatial wavefunction of photons has enabled a variety of quantum protocols for communication, sensing, and information processing. These protocols exploit the high dimensionality of structured light enabling the encoding of multiple bits of information in a single photon, the measurement of small physical parameters, and the achievement of unprecedented levels of security in schemes for cryptography. Unfortunately, the potential of structured light has been restrained to free-space platforms in which the spatial profile of photons is preserved. Here, we make an important step forward to using structured light for fiber optical communication. We introduce a …

Rates Of Future Climate Change In The Gulf Of Mexico And The Caribbean Sea: Implications For Coral Reef Ecosystems, A. E. Lawman, S. G. Dee, K. L. Delong, A. M.S. Correa

Faculty Publications

Rising temperatures and ocean acidification due to anthropogenic climate change pose ominous threats to coral reef ecosystems in the Gulf of Mexico (GoM) and the western Caribbean Sea. Unfortunately, the once structurally complex coral reefs in the GoM and Caribbean have dramatically declined since the 1970s; relatively few coral reefs still exhibit a mean live coral cover of >10%. Additional work is needed to characterize future climate stressors on coral reefs in the GoM and the Caribbean Sea. Here, we use climate model simulations spanning the period of 2015–2100 to partition and assess the individual impacts of climate stressors on …

Modelling Of Cohesive Expandable Lcms For Fractures With Large Apertures, Lu Lee, Musaab Magzoub, Arash Dahi Taleghani, Saeed Salehi, Guoqiang Li

Faculty Publications

The problem of loss circulation in geothermal wells is inherently challenging due to high temperatures, brittle rocks, and presence of abundant fractures. Because of the inherent challenges in geothermal environments, there are limitations in selecting proper lost circulation materials (LCMs). Traditional LCMs such as calcium carbonates that are commonly used in the oil and gas drilling may be softened and prone to failure during geothermal drilling. Moreover, evaluating the performance of different LCMs for geothermal drilling requires unique testing setups, which is expensive, and complicated to run due to harsh environmental conditions of geothermal systems. Herein, we present a numerical …

Examining Drivers’ Behaviors To Connected And Automated Vehicles, Hany Hassan, Taniya Sultana

Publications

It is envisioned that Connected and Automated Vehicles (CAVs) are the future of transportation as they can assist in minimizing some inefficiencies with the current transport systems. However, it is not clear how drivers of conventional vehicles would interact with CAVs in a mixed traffic environment containing both CAVs and human driven vehicles (HDVs). Thus, this study aims to investigate drivers’ behaviors towards CAVs through driving simulation experiment and national survey study. Two on-ramp and two off-ramp driving simulation scenarios were designed where drivers were asked to merge with two-lane highway in presence of HDVs and CAVs truck platoon in …

Applications Of Temperature Transient Analysis For Reservoir Surveillance, Refaat Galal Aboelfotoh Hashish

LSU Doctoral Dissertations

Reservoir monitoring is a key factor in the management of oil and gas resources. With the recent developments of permanent downhole temperature monitoring tools such as Fiber-Optic Distributed Temperature Sensing (FO-DTS), temperature transient analysis has evolved as a new alternative for reservoir monitoring. In this work, different techniques of temperature data analysis are presented for monitoring and characterization of hydrocarbon and geologic carbon storage (GCS) reservoirs. The objective of this study is to present new approaches that enable monitoring injection profile through vertical and horizontal injection wells using temperature warmback analysis. Application of temperature warmback analysis is also extended for …

The Effects Of Covid 19-Related Social Media Hate Crime On Asian And Asian Americans' Self-Esteem, Saachi Chugh

LSU Master's Theses

The COVID-19 pandemic has changed the way people communicate, live, socialize and perhaps the way they feel about the Asian population. The United States has seen a rise in the Asian hate crimes on online and offline platforms since the beginning of the pandemic which has affected the overall well-being of the Asian population. To our knowledge, the present study is one of the first studies to address the effects of COVID 19-related online perceived racial discrimination on the self-esteem of Asians. Additional objectives were to reveal the different coping mechanisms being used by the Asian population to cope with …

The Effects Of Covid 19-Related Social Media Hate Crime On Asian And Asian Americans' Self-Esteem, Saachi Chugh

LSU Master's Theses

The COVID-19 pandemic has changed the way people communicate, live, socialize and perhaps the way they feel about the Asian population. The United States has seen a rise in the Asian hate crimes on online and offline platforms since the beginning of the pandemic which has affected the overall well-being of the Asian population. To our knowledge, the present study is one of the first studies to address the effects of COVID 19-related online perceived racial discrimination on the self-esteem of Asians. Additional objectives were to reveal the different coping mechanisms being used by the Asian population to cope with …

Domain Of Exotic Laplacian Constructed By Wiener Integrals Of Exponential White Noise Distributions, Luigi Accardi, Un Cig Ji, Kimiaki Saitô

Journal of Stochastic Analysis

No abstract provided.

Understanding Consumers' Use Experience On Electrically Heated Jacket: A Study On Online Review Using Topic Modeling, Md Nakib-Ul Hasan

LSU Doctoral Dissertations

The demand for heated jackets is anticipated to be fuelled by frequent temperature drops, severe winter weather, and increasing outdoor activities. Electrically heated jackets (EHJ) are primarily marketed through online distribution channels and expansion of online sales channels is expected to boost the global market. Consumers are increasingly relying on online reviews from other consumers to help them decide what to buy. Businesses also actively monitor and manage their online reviews to build trust in their brand and make it more likely that customers will buy. Traditional approaches for assessing customer behavior, such as market research surveys and focus groups, …

Economically Optimizing Elevation Of New, Single-Family Residences For Flood Mitigation Via Life-Cycle Benefit-Cost Analysis, Ehab Gnan, Carol J. Friedland, Rubayet Bin Mostafiz, Md Adilur Rahim, Thanos Gentimis, Arash Taghinezhad, Robert V. Rohli

Faculty Publications

Construction with freeboard—vertical height of a structure above the minimum required—is commonly accepted as a sound investment for flood hazard mitigation. However, determining the optimal height of freeboard poses a major decision problem. This research introduces a life-cycle benefit-cost analysis (LCBCA) approach for optimizing freeboard height for a new, single-family residence, while incorporating uncertainty, and, in the case of insured homes, considering the costs from losses, insurance, and freeboard (if any) to the homeowner and National Flood Insurance Program (NFIP) separately. Using a hypothetical, case study home in Metairie, Louisiana and U.S. Army Corps of Engineers design depth-damage functions for …

Understanding The Views Of Beef Show Cattle Parents And The Reasons Why Their Children Participate In Beef Cattle Shows, Matt Schiel

LSU Master's Theses

The population for this qualitative study were 10 families who participated in showing a heifer at the 2022 Fort Worth Stock Show and Rodeo during the junior heifer show weekend. The families were all from Texas. This study examined why parents allow their children to participate in showing cattle using a case study design. The study was grounded in human capital theory. Interviews and observations were used for the study’s findings. Results showed that the children who showed beef cattle learned responsibility, interpersonal skills, character development, and hard work.

Future research topics include further case studies using the same methodology …

Assessing The Current State Of Louisiana's Crawfish Fishery: Trends And Challenges In Wild Capture And Aquaculture, Mahala G. Gambill

LSU Master's Theses

Crawfish are found throughout the southern U.S.; however, Louisiana is by far the largest producer. The state’s industry includes harvesting wild crawfish from natural habitats such as bayous, swamps, and marshes, and crawfish reared in outdoor ponds. Although commercial harvest records are available, characterization of Louisiana’s wild capture crawfish fishery in recent years is undocumented, and analysis of environmental variables that could be correlated with annual harvest totals have not yet been explored. Using trip ticket data from the Louisiana Department of Wildlife and Fisheries, I characterized monthly and annual trends within Louisiana basins to assess changes in crawfish harvest …

The Influence Of Selected Personal And Academic Demographic Characteristics On Persistence To Degree Completion Among Traditional-Age Undergraduate Students At A Research University In The Southeastern United States, Michael Eugene Mckey Jr.

LSU Doctoral Dissertations

A college education has never been more important than it is today. With nearly two-thirds of jobs in the future requiring some form of advanced education, and approximately one-third of those requiring a bachelor’s degree, it is imperative that research be undertaken to address the factors that contribute to the success of students in college, more so regarding the persistence and retention of those students. Therefore, the purpose of this study was to determine the influence of selected personal and academic demographic characteristics on the persistence to graduation, specifically, within six years. A causal-comparative research design was used as the …

Human Total, Basal And Activity Energy Expenditures Are Independent Of Ambient Environmental Temperature, Xueying Zhang, Yosuke Yamada, Hiroyuki Sagayama, Philip N. Ainslie, Ellen E. Blaak, Maciej S. Buchowski, Graeme L. Close, Jamie A. Cooper, Sai Krupa Das, Lara R. Dugas, Michael Gurven, Asmaa El Hamdouchi, Sumei Hu, Noorjehan Joonas, Peter Katzmarzyk, William E. Kraus, Robert F. Kushner, William R. Leonard, Corby K. Martin, Erwin P. Meijer, Marian L. Neuhouser, Robert M. Ojiambo, Yannis P. Pitsiladis, Guy Plasqui, Ross L. Prentice, Susan B. Racette, Eric Ravussin, Leanne M. Redman, Rebecca M. Reynolds, Susan B. Roberts, Luis B. Sardinha, Analiza M. Silva, Eric Stice, Samuel S. Urlacher

Clinical Research Faculty Publications

Lower ambient temperature (Ta) requires greater energy expenditure to sustain body temperature. However, effects of Ta on human energetics may be buffered by environmental modification and behavioral compensation. We used the IAEA DLW database for adults in the USA (n = 3213) to determine the effect of Ta (−10 to +30°C) on TEE, basal (BEE) and activity energy expenditure (AEE) and physical activity level (PAL). There were no significant relationships (p > 0.05) between maximum, minimum and average Ta and TEE, BEE, AEE and PAL. After adjustment for fat-free mass, fat mass and age, statistically significant (p < 0.01) relationships between TEE, BEE and Ta emerged in females but the effect sizes were not biologically meaningful. Temperatures inside buildings are regulated at 18–25°C independent of latitude. Hence, adults in the US modify their environments to keep TEE constant across a wide range of external ambient temperatures.

Investigating Preferences And Behavior Within Environmental Economics, Sapana Bastola

LSU Doctoral Dissertations

To respond to the environmental problems posed by disposable plastic bags, several mechanisms exist, such as bag taxes and bans, but such policies are infeasible in several U.S. states and municipalities. This study uses a social quasi-experiment to examine the effect of a voluntary token-donation program, which reduces disposable plastic bag use by providing a small charitable donation incentive. We find that the token-donation program reduces the probability of disposable bag use by 11.4–12.9 percentage points, representing about a 30%–34% decrease in bag use. Our results demonstrate effective mechanisms to reduce plastic bags exist without government-mandated policy.

Despite the widespread …

The Effects Of Exercise On Innate Lymphoid Cell Metabolism And Function In Cancer, Eunhan Cho

LSU Doctoral Dissertations

Immunosenescence refers to the gradual decrease in immune competency over time, which is strongly associated with increased risk of cancer and a rise in morbidity and mortality among the elderly. Regular physical activity can be beneficial to the immune system by potentially decreasing the frequency of senescent immune cells and reducing mortality risk in cancer patients and survivors. However, less is known on the impact of acute exercise on “aggressive” cancers, such as hormone receptor negative breast cancers. Further, the mechanistic underpinnings of the exercise-associated improvements in the immune response to cancer remains unclear. In this context, past studies have …