Digital Commons Network^™

Modeling Interactions Of Planting Date And Phenology In Louisiana Rice Under Current And Future Climate Conditions, Sajad Jamshidi, Teresa Murgia, Ana G. Morales-Ona, Tommaso Cerioli, Adam N. Famoso, Davide Cammarano, Diane R. Wang

Faculty Publications

The performance of novel genetic combinations under untested environmental scenarios and management practices can be virtually examined using process-based crop models. Indeed, there has been a long-standing interest in the crop modeling community to expand the utility of process-based models to broader germplasm panels (e.g., breeding lines or diversity panels). Yet, there is often a misalignment between data needed to parameterize process-based crop models and data routinely collected by breeding programs. To address this gap, we leverage a dataset from a long-term trial on advanced experimental lines and released varieties from the Louisiana rice breeding program to calibrate and evaluate …

Selective Antineoplastic Potential Of Fractionated Caribbean Native Ganoderma Species Extracts On Triple-Negative Breast Cancer Cells, Luz V. Arroyo-Cruz, Sebastián Sagardía-González, Kurt Miller, Taotao Ling, Fatima Rivas, Michelle M. Martínez-Montemayor

Faculty Publications

Triple-negative breast cancer (TNBC) is an aggressive subtype characterized by the absence of estrogen receptor, progesterone receptor, and human epidermal growth factor receptor type 2 expression. It is known for its high malignancy, invasiveness, and propensity for metastasis, resulting in a poor prognosis due to the absence of beneficial therapeutic targets. Natural products derived from mushrooms have gained significant attention in neoplastic therapy due to their potential medicinal properties. The therapeutic potential of Ganoderma lucidum in breast cancer has been highlighted by our group, suggesting its use as an adjuvant treatment. The present study aims to assess the potential antineoplastic …

In Vitro Culture Alters Cell Lineage Composition And Cellular Metabolism Of Bovine Blastocyst, Hao Ming, Mingxiang Zhang, Sandeep Rajput, Deirdre Logsdon, Linkai Zhu, William B. Schoolcraft, Rebecca L. Krisher, Zongliang Jiang, Ye Yuan

Faculty Publications

Profiling bovine blastocyst transcriptome at the single-cell level has enabled us to reveal the first cell lineage segregation, during which the inner cell mass (ICM), trophectoderm (TE), and an undefined population of transitional cells were identified. By comparing the transcriptome of blastocysts derived in vivo (IVV), in vitro from a conventional culture medium (IVC), and in vitro from an optimized reduced nutrient culture medium (IVR), we found a delay of the cell fate commitment to ICM in the IVC and IVR embryos. Developmental potential differences between IVV, IVC, and IVR embryos were mainly contributed by ICM and transitional cells. Pathway …

Secondary School State Athletic Association Health And Safety Policy Development Processes, Susan Yeargin, Rebecca M. Hirschhorn, William M. Adams, Samantha E. Scarneo-Miller

Faculty Publications

Background: The National Federation of State High School Associations provides recommendations regarding health and safety policies; however, policy development is governed at the state level. Given interstate differences in governance, the primary purpose was to describe processes that State High School Athletic Associations (SHSAAs) utilize to develop a new policy. The secondary objective was to determine what methods associations use to implement new policies. Methods: A cross-sectional survey requested SHSAA (n = 51) representatives to report how athlete health and safety policies are introduced, revised, approved, and implemented within their state. The 22-question survey was developed to gather variables for …

Spatiotemporal Analysis Of Nighttime Crimes In Vienna, Austria, Jiyoung Lee, Michael Leitner, Gernot Paulus

Faculty Publications

Studying the spatiotemporal dynamics of crime is crucial for accurate crime geography research. While studies have examined crime patterns related to weekdays, seasons, and specific events, there is a noticeable gap in research on nighttime crimes. This study focuses on crimes occurring during the nighttime, investigating the temporal definition of nighttime crime and the correlation between nighttime lights and criminal activities. The study concentrates on four types of nighttime crimes, assault, theft, burglary, and robbery, conducting univariate and multivariate analyses. In the univariate analysis, correlations between nighttime crimes and nighttime light (NTL) values detected in satellite images and between streetlight …

A Simple Approach To Dealing With Partial Contestation, Ali Kagalwala, Thiago M.Q. Moreira, Guy D. Whitten

Faculty Publications

Objective: We propose a simple approach to dealing with partial contestation in models of multiparty elections. Methods: Our proposed approach is to add a tiny value to the vote share of parties that do not contest a district and then to include dummy variables identifying those districts in which parties do not compete. We can then estimate a single system of equations using a seemingly unrelated regression (SUR) approach and Aitchison's log-ratio transformation. In our SUR system, we interact the dummy variable for a party that partially contested districts with other predictors in the equation that uses the share of …

A (Dynamic) Investigation Of Stereotypes, Belief-Updating, And Behavior, Katherine Coffman, Maria Paola Ugalde Araya, Basit Zafar

Faculty Publications

Using a controlled experiment, we study the dynamic effects of feedback on decision-making across verbal skills and math. Before feedback, men are more optimistic about their performance and more willing to compete than women, especially in math. While feedback shifts individuals' beliefs and behavior, we see substantial persistence of gender gaps 1 week later. This is particularly true among individuals who receive negative feedback. Our results are not well-explained by motivated reasoning; in fact, negative feedback is more likely to be recalled than positive feedback. Overall, our results highlight the challenges involved in overcoming gender gaps in dynamic settings.

Presidential Stories Of Fear: Focusing Congressional Climate Change Mitigation Attention In The United States, Holly L. Peterson, Chad Zanocco

Faculty Publications

Do presidential climate change narratives increase related congressional attention in the United States? Narrative theory says since narratives leverage cognitive heuristics, they should focus policy-making attention in institutions more efficiently than non-narrative statements. This study identifies and tests climate change statements and narratives, including those focused on solutions, or “stories of hope,” and those focused on problems and victims, “stories of fear,” for relationships with congressional attention using time series analysis. Findings suggest a relationship between narrative and hearings, but not for non-narrative statements and hearings. Furthermore, while narratives are related to hearings generally, stories of fear have larger effects, …

Deep Learning-Based Geomorphic Feature Identification In Dredge Pit Marine Environment, Wenqiang Zhang, Xiaobing Chen, Xiangwei Zhou, Jianhua Chen, Jianguo Yuan, Taibiao Zhao, Kehui Xu

Faculty Publications

Deep learning methods paired with sidescan sonar (SSS) are commonly used in underwater search-and-rescue operations for drowning victims, wrecks, and airplanes. However, these techniques are primarily used to detect mine-like objects and are rarely applied to identifying features in dynamic dredge pit environments. In this study, we present a Sandy Point dredge pit (SPDP) dataset, in which high-resolution SSS data were collected from the west flank of the Mississippi bird-foot delta on the Louisiana inner shelf. This dataset contains a total of 385 SSS images. We then introduce a new Effective Geomorphology Classification model (EGC). Through ablation studies, we analyze …

The Effect Of Season On Neuroendocrine Interactions In The Mare, Victoria N. Bailey

LSU Doctoral Dissertations

Reproductive seasonality in the mare involves various neuroendocrine modulations, and a series of experiments were conducted to investigate the anatomical and physiological roles of some of these seasonal modulators. The first experiment incorporated kisspeptin-10 (Kp10) into a treatment with estradiol benzoate (EB) and sulpiride, aiming to induce early cyclicity in seasonally anovulatory mares. Incorporation of Kp10 resulted in more mares ovulating earlier compared to mares receiving EB-sulpiride. Although plasma prolactin increased in both groups, concentrations were notably higher in Kp10-treated mares. Therefore, the subsequent experiment explored the anatomical interaction of kisspeptin and prolactin, aiming to determine whether kisspeptin may regulate …

The Hoof Inside Out: A Comprehensive Investigation About The Shoe Configuration Effects On The Behavior Of The Equine Hoof, Rita Aoun

LSU Doctoral Dissertations

The equine hoof is a unique organ in biology that has intricate elastic properties. From simple protection to therapeutic and corrective measures, horseshoes are widely used in the equine industry. Various types of shoeing have been designed and used based on their unique targeted functions following hoof care. Shoes can modify the gait of the horse, affect the alignment of the distal joints, and alter stress and strains on specific hoof regions. The objective of this dissertation is to provide an overview of the available research on the existing methodology and literature on the effects of shoeing on equine gait …

Skilled Labor Shortage In Construction: Deep Dive Of Impactful Factors And Influential People Of The Decision-Making Process, Nicholas B. Hardy

LSU Doctoral Dissertations

The skilled labor shortage is well documented from a historical perspective via studies focusing on various construction trades such as carpentry, mechanical, electrical, plumbing, and tile setters. Causes of such shortages such as industry image, college as a preferred choice after high school, and construction being a last resort have been investigated extensively. Consequently, possible solutions ranging from amplifying shop classes in high school to intensifying recruiting efforts for union training programs have all been addressed throughout the last 40 years. However, recent studies have focused on identifying the magnitude and reach of the skilled labor gap while limited attention …

Physical Activity And Depressive Symptoms In Youth, Katherine E. Spring, Amanda E. Staiano

Population and Public Health Science Faculty Publications

No abstract provided.

Academic Support Programs At Hbcu Law Schools, Marla L. Dickerson

LSU Doctoral Dissertations

This qualitative descriptive case study delves into the effectiveness of academic support programs (ASPs) for students at Historically Black Colleges and Universities (HBCU) law schools, focusing on enhancing academic performance and passing the bar exam. The underrepresentation of minority lawyers in the United States, which is attributed partly to standardized test disparities, underscores the need for tailored support mechanisms. Drawing from social cognitive theory (SCT), the study investigates how ASPs impact academic success, informed by participant interviews and thematic analysis.

Key findings reveal four prominent themes. Firstly, effective features of ASPs for promoting academic performance include personalized guidance from academic …

The Ring-Closing Reaction Of Cyclopentadiene Probed With Ultrafast X-Ray Scattering, Lisa Huang, Lauren Bertram, Lingyu Ma, Nathan Goff, Stuart W. Crane, Asami Odate, Thomas Northey, Andrés Moreno Carrascosa, Mats Simmermacher, Sri Bhavya Muvva, Joseph D. Geiser, Matthew J. Lueckheide, Zane Phelps, Mengning Liang, Xinxin Cheng, Ruaridh Forbes, Joseph S. Robinson, Matthew J. Hayes, Felix Allum, Alice E. Green, Kenneth Lopata, Artem Rudenko, Thomas J.A. Wolf, Martin Centurion, Daniel Rolles, Michael P. Minitti, Adam Kirrander, Peter M. Weber

Faculty Publications

The dynamics of cyclopentadiene (CP) following optical excitation at 243 nm was investigated by time-resolved pump-probe X-ray scattering using 16.2 keV X-rays at the Linac Coherent Light Source (LCLS). We present the first ultrafast structural evidence that the reaction leads directly to the formation of bicyclo[2.1.0]pentene (BP), a strained molecule with three- and four-membered rings. The bicyclic compound decays via a thermal backreaction to the vibrationally hot CP with a time constant of 21 ± 3 ps. A minor channel leads to ring-opened structures on a subpicosecond time scale.

The Collaborative Assessment And Management Of Suicdality As A Single Session Intervention For Patients Admitted To Inpatient Psychiatric Care For Suicidal Thoughts And Behaviors, D Nicolas Oakey-Frost

LSU Doctoral Dissertations

Inpatient psychiatric care is a critical contact point for individuals experiencing suicidal thoughts and behaviors (STB). The Zero-Suicide framework provides useful scaffolding for improving suicide prevention within inpatient psychiatry (i.e., Assess, Intervene, and Monitor [AIM-SP]). Available evidence suggests instruments are available for evidence informed risk assessment but are hindered by low construct validity and a limited collaborative approach. Additionally, extant interventions do not typically target STB and are not optimized for inpatient psychiatric care. The Collaborative Assessment and Management of Suicidality (CAMS) meets the criteria of the Zero-Suicide Framework and is often leveraged as a single session intervention (SSI) but …

Emotional Reactivity And Recognition Deficits In Individuals With Callous-Unemotional (Cu) Traits: A Multilevel Meta-Analysis, Emily C. Kemp

LSU Doctoral Dissertations

Youth and adults with antisocial behavior present a significant mental health concern. Elevated callous-unemotional (CU) traits, characterized by deficient empathy and remorse, distinguish clinically important subgroups of antisocial individuals who present with more severe behavior and distinct cognitive-affective characteristics that may help to explain the underlying causes of their antisocial behavior and inform more effective treatments. Specifically, two mechanisms theorized to underlie the development of elevated CU traits by way of atypical empathy development are deficient reactivity to and recognition of others’ emotions. Though a substantive literature base reports associations between CU traits and emotional processing deficits, significant inconsistencies remain. …

Factors Associated With Functioning In Older Black Adults, Katrail D. Davis

LSU Master's Theses

Activities of daily living can be simple tasks such as bathing, showering, toileting or as complex as managing finances, driving, and preparing meals. Independence in everyday functioning has been associated with successful aging and declines in functioning may be indicative of pathological cognitive decline. Social determinants of health, like economic status and access to health care, also play a role in everyday functioning. Understanding these factors are of particular importance for older Black adults who have had long-standing disparate access to care, education, and treatments. The current study aimed to evaluate social determinants of health, more specifically social engagement, as …

Pressure And Rate Transient Analyses For Plume Characterization And Storage Capacity Estimation Of Co2 Storage Projects, Mohamed Elnoby Mokhtar Abdelaal

LSU Doctoral Dissertations

Reservoir characterization is a key factor for effective management of commercial-scale Geologic CO2 Storage (GCS) projects. Pressure/rate transient analyses (PTA/RTA) have evolved as reliable tools for assessing hydrocarbon and GCS reservoirs. Injection rate and pressure data are routinely measured as a part of GCS projects’ surveillance, or during transient well testing. The data contain valuable information about the subsurface that can be extracted. The extracted information enables the operator to evaluate the effectiveness of injection operations, and to make remedial/corrective interventions. In this current work, different analytical and numerical techniques are presented to characterize, assess, and maximize the economic and …

Családi, Joelle Nagy

LSU Master's Theses

Családi (Magyar/Hungarian) adjective: related to the family; related to the home

CSALÁDI is a compendium of paintings and sculpture that narrate and itemize memories, mementos, and feelings from my childhood in relation to the home. It is an autobiographical agglomeration of objects and spaces that I am honoring and remembering through the act of creating. I am effectuating the feminine and maternal instinct of gathering and arranging my memories pertaining to personal history and inherited cultural identity through altar-making. Idiosyncratic items are collected and bound through color association and sensory memory. Constructing interior and exterior spaces of the home in …

Emotional Diplomacy From Tel Aviv To Baghdad: Analyzing The Impact Of Emotional Appeals On Social Media Engagement, Soheil Kafiliveyjuyeh

LSU Doctoral Dissertations

This study investigates the use of emotional appeals in the diplomatic communication of U.S. ambassadors in the Middle East. In the realm of diplomacy, actors might strategically and deliberately exhibit emotions to shape and control how their nation is perceived internationally. The project's primary objective is to explore the effectiveness of emotional appeals in generating social media interactions with politicians’ and ambassadors’ messages, and in building relationships with their target audience through these engagements. Using three studies, I examine the diplomatic communications of U.S. ambassadors in the Middle East by focusing on their utilization of Twitter/X and emotional diplomacy strategies. …

Understanding Social Impacts Of Major Disruptions From The Perspective Of Destination Access, Manika Rana Bhat

LSU Master's Theses

Major disruptions (like public health crises and extreme weather events) significantly impact human mobility and travel patterns. This study investigates the social impacts of major disruptions on human mobility from the perspective of accessing destinations. This study used a large-scale dataset from SafeGraph and focused on analyzing the impacts of COVID-19 and Hurricane Ida on destination access in Louisiana. The findings of the temporal plots indicated that the impact magnitude of Hurricane Ida was much smaller than that of the COVID-19 pandemic but still resulted in hardship on destination access. During COVID-19, it was found that parishes with limited active …

The Impact Of Social Stress And Alcohol Intoxication On Cognitive Processes Among College Students With Heavy Episodic Drinking, Caroline R. Scherzer

LSU Master's Theses

College students with high social anxiety and heavy episodic drinking appear to consume alcohol more frequently and at greater quantities, presumably because individuals with higher trait social anxiety may be more responsive to the stress-response dampening effects of alcohol in social contexts due to appraisal disruption and activation of implicit social cognitions. However, little work has tested this hypothesis within a controlled lab-based setting. The current study tested whether the sequence of alcohol intoxication and induction of an anticipatory social stressor interacts with trait social anxiety to predict changes in anticipatory social anxiety, craving, implicit drinking identity, and implicit self-esteem. …

Consumer Behavior Analysis Approach To Teacher Choice Of Reading Interventions, Rochelle N. Picardo

LSU Doctoral Dissertations

The use of Evidence-based Practices (EBPs) in schools is heavily emphasized in educational research and policy; however, many teachers do not use EBPs for reading instruction and intervention. Previous research on the limited use of EBPs in classrooms has primarily focused on teacher characteristics, such as their attitudes or beliefs toward these practices. As an alternative to this view, this study applied a behavioral economic approach to understanding teacher choice (i.e., EBPs over other alternatives, such as interventions with a base of limited empirical support; low-value practices [LVPs]). Hypothetical Intervention Choice Tasks were developed and used to evaluate how both …

Speculative Telephone: Oral Historians And Digital Librarians On How Libraries Could Be, Kae Kratcha

Journal of Critical Digital Librarianship

In the summer of 2023, librarian and oral historian Kae Bara Kratcha interviewed three oral historians about their relationships to libraries and their dreams for what digital libraries could be. Then they played portions of each oral historian interview for a digital librarian and asked the librarian to speculate about what their jobs and lives would be like if they implemented the oral historians' ideas about digital libraries. “Speculative Telephone: Oral Historians and Digital Librarians on How Libraries Could Be” is eleven edited audio tracks of wide-ranging conversation on topics like public space, online communities, library anxiety, relationships with library …

Let Us Fail: Speculative Futures And Digital Librarianship, Natalia Estrada, Kristina Bush, Stacy Snyder

Journal of Critical Digital Librarianship

Let Us Fail explores what digital librarianship work might look like if digital library workers were not tied to the technology, infrastructure, or work culture of academia that we currently experience. We explore what work could look like if we were given the agency to play and be creative, support to learn from failure, and freedom from traditional assessment metrics. This podcast dreams about a future in which digital library workers are self-directed, autonomous workers with the capacity to explore, experiment, and iterate.

To stream each episode of this podcast, navigate to JCDL volume 0, issue 2 and click on …

Desire Paths In The Information Landscape, Victoria Van Hyning, Mason A. Jones, Travis Wagner

Journal of Critical Digital Librarianship

Libraries and archives serve so many different users who come to information institutions with various perspectives, needs, experiences, and desires around accessing physical or digital collections. While our users may find what they are looking for immediately, many have to beat their own paths through complex systems and metadata that doesn’t align with their needs. Their search strategies may leave digital “desire paths”–alternative routes through the information landscape that can show us how to better meet their needs. This article covers three scenarios where users’ desire paths can be seen or where gaps around user experience can be better addressed. …

A Flow-Curvature-Based Model For Channel Meandering In Tidal Marshes, Giulio Mariotti, Alvise Finotello

Faculty Publications

Channel meandering is ubiquitous in tidal marshes, yet it is either omitted or weakly implemented in morphodynamic models. Here we propose a novel numerical method to simulate channel meandering in tidal marshes on a Cartesian grid. The method calculates a first-order flow by considering the balance between pressure gradient and bed friction. To account for flow momentum shift toward meander outer banks, the flow is empirically modified. Unlike previous simplified methods that relied on the curvature of the bank, this modification is based on the curvature of the flow, making the model suitable for use in dendritic channel networks. The …

Spatial And Temporal Distribution Of Juvenile Gulf Sturgeon In The Pearl River, Louisiana, And Adjacent Estuaries Of The Gulf Of Mexico, Ashley M. Baer, Glenn C. Constant, Kayla D. Kimmel, Michael A. Dance, Jenna N. Brogdon

Faculty Publications

Objective: Acoustic telemetry was used to examine the spatial-temporal distribution and anadromous migration pattern of juvenile Gulf Sturgeon Acipenser desotoi within the Pearl River and associated coastal estuaries of Louisiana and Mississippi. Methods: Acoustic transmitters were surgically implanted in 52 juvenile Gulf Sturgeon (< 890 mm fork length) from the Pearl River between 2016 and 2019. Sturgeon were monitored on 247 acoustic receivers in the lower Pearl River and adjacent estuaries across numerous partnering arrays. Result: Juveniles were detected on receivers from Lake Pontchartrain, Louisiana, east to Bay St. Louis, and Biloxi Bay, Mississippi. The 3-year study found that juvenile Gulf Sturgeon migration in the Pearl River occurred on cycles similar to those reported from other populations. Juveniles were rarely observed in the estuary and nearshore marine environments from May through mid-October of each year, during which time most sturgeon inhabited the Pearl River. Conversely, most of the juveniles inhabited coastal estuaries from December through February of each year and were rarely observed in freshwater environments during this period. Migration from the river into the estuary occurred during late-October through November, and migration from the estuary into the river occurred in March and April. Distribution patterns varied spatially within the river and estuary ecosystems during each phase of migration. Tagged juveniles occupied the lowest 40 km of the Pearl River while in freshwater, and they occupied the northeastern shoreline of Lake Pontchartrain and Bay St. Louis while in the estuary. Interestingly, juveniles seemed to target specific areas in the estuary during winter that were farther away from the mouth of natal rivers than has been previously reported. Conclusion: This study provides a new assessment of juvenile Gulf Sturgeon migration and seasonal distribution for the Pearl River and provides important information for designing and assessing the potential benefits and challenges of habitat restoration for Gulf Sturgeon.

Maternal 24-H Movement Patterns Across Pregnancy And Postpartum: The Life-Moms Consortium, Chelsea L. Kracht, Kimberly L. Drews, Emily W. Flanagan, Sarah K. Keadle, Dympna Gallagher, Linda Van Horn, Debra Haire-Joshu, Suzanne Phelan, Jeremy Pomeroy, Leanne M. Redman

Clinical Research Faculty Publications

Objective: Time spent among the 24-h movement behaviors (physical activity [PA], sleep, sedentary behavior [SB]) in the perinatal period is important for maternal and child health. We described changes to 24-h movement behaviors and behavior guideline attainment during pregnancy and postpartum and identified correlates of behavior changes. Methods: This secondary data analysis included the standard of care group (n = 439) from the U.S.-based Lifestyle Interventions For Expectant Moms (LIFE-Moms) consortium, including persons with overweight and obesity. Wrist-worn accelerometry was used to measure movement behaviors early (9–15 weeks) and late (35–36 weeks) pregnancy, and ∼ 1-year postpartum. Sleep and moderate-to-vigorous …