Digital Commons Network^™

The Full Range Leadership Model (Frlm): Department Head Perceptions Of Leadership Style And Development, Stephanie Elaine Heroman

LSU Doctoral Dissertations

The purpose of this study is to discover the perceived leadership styles of department heads as categorized by the Full Range Leadership Model (FRLM), developed by Avolio and Bass (1991). The FRLM categorizes leadership style along a continuum, from laissez-faire leadership, to transactional leadership, and ultimately transformational leadership. Even though department heads occupy a pivotal leadership role, many do not have formal leadership training, and instead rise to power through disciplinary expertise. This study will collect data on the experiences contributing to the development of leadership style in department heads. Understanding the leadership styles and experiences of department heads will …

Temporal Scales Of Sediment Accumulation, Mass Wasting, And Stratigraphy Across The Mississippi River Delta Front, Jeffrey E. Duxbury

LSU Doctoral Dissertations

The Mississippi River Delta Front (MRDF) is a subaqueous apron of rapidly deposited, weakly

consolidated sediment extending from the subaerial portions of the Mississippi River’s Birdsfoot Delta, historically known for sediment transport via mass wasting. To better understand the spatial and temporal dynamics of processes influencing the MRDF, 29 cores ranging from 5.8 to 8.71 meters in length were collected from the South Pass (SP) and Southwest Passes (SWP). These cores targeted specific depositional environments, including the undisturbed topset apron, medial mudflow gully, mudflow lobe, and prodelta. The cores were analyzed along their full lengths for gamma density, grain size, …

State-Of-Charge Estimation Using Deep Learning For Electric Vehicles, Samer Yahya Ribhe Tahboub

LSU Master's Theses

This thesis investigates the application of deep learning models for State of Charge (SOC) estimation in Battery Management Systems (BMS) for electric vehicles (EVs), focusing on optimizing EV range, lifespan, and performance while addressing challenges like range anxiety. The study explores three deep learning architectures—Long Short-Term Memory (LSTM), Bidirectional LSTM (BiLSTM), and Gated Recurrent Unit (GRU)—each designed to capture complex temporal dependencies in battery data. The LSTM model is trained on EV battery data, including voltage, current, temperature, and SOC, providing a strong baseline for SOC estimation. The BiLSTM model enhances accuracy by processing data in both forward and backward …

Flood Risk And Mitigation Calculator Tool To Support Decision-Making For Enhancing Community Resilience: A Case Study Of The U.S.A. Gulf Coastal Region, Rubayet Bin Mostafiz, Ayat Al Assi, Arash Taghinezhad, Carol J. Friedland, Robert V. Rohli, Md Adilur Rahim, Christopher T. Emrich, Melanie Gall, Eric Johnson

Faculty Publications

Real-estate websites make it easy to find and access information about a home. Information on property value, square footage, number of rooms, quality of schools, crime rates, and more is readily available. Some of these platforms have begun integrating climate-related risks in generic ways. However, this information provides limited if any actionable value and is unlikely to guide people’s decision-making on buying or renting a home, deciding where to vacation, or investing in a property. Making residents aware of the natural hazard risks to which their homes may be exposed is an important component of making communities more resilient. Both …

Is Verbal Rehearsal Strategic? An Investigation Into Overt Rehearsal Of Nameable Pictures In 5- To 10-Year-Old Children, Candice C. Morey, Angela M. Aubuchon, Meg Attwood, Thomas Castelain, Nelson Cowan, Davide Crepaldi, Emilie Fjerdingstad, Eivor Fredriksen, Chris Jarrold, Chris Koch, Jaroslaw R. Lelonkiewicz, Gary Lupyan, Whitney Mendenhall, David Moreau, Christina Schonberg, Christian K. Tamnes, Haley Vlach, Emily M. Elliott

Faculty Publications

Though verbal rehearsal is a frequently endorsed strategy for remembering short lists among adults, there is ambiguity around when children deploy it, and what circumstantial factors encourage them to rehearse. We recoded data from a recent multilab replication of a serial picture memory task in which children were observed for evidence of task-related speech or lip movements to extract finer-grained detail about how children spoke during the task. With these data, we aimed to better understand the manner in which children rehearse and the task scenarios which elicit overt rehearsal. Children in several countries from 5 to 10 years old …

From The Wilderness To Appomattox: The Fifteenth New York Heavy Artillery In The Civil War, Jonathan M. Steplyk

Civil War Book Review

No abstract provided.

Book Challenges And Censorship Attempts In Louisiana: A Case Study, Jennifer E. Steele

Faculty Publications

Book challenges and censorship have long played a significant role in the cultural and educational landscapes of the United States. In recent years, Louisiana has become a focal point in national conversations about intellectual freedom, public and school library governance, parental rights, and the political pressures surrounding children and young adult literature. This dynamic environment has led to significant debates about what materials should be accessible to young people, how libraries should be managed, and what role the state and local governments should play in determining the availability of information. The rise in book challenges across Louisiana reflects national trends …

Arguing Until Doomsday: Stephen Douglas, Jefferson Davis, And The Struggle For American Democracy, Caleb G. Roark

Civil War Book Review

No abstract provided.

The Women's Fight: The Civil War's Battle For Home, Freedom, And Nation, Akua Lewis

Civil War Book Review

No abstract provided.

Playing Politics With Traffic Fines: Sheriff Elections And Political Cycles In Traffic Fines Revenue, Min Su, Christian Buerger

Faculty Publications

The political budget cycle theory has extensively documented how politicians manipulate policies during election years to gain an electoral advantage. This paper focuses on county sheriffs, crucial but often neglected local officials, and investigates their opportunistic political behavior during elections. Using a panel data set covering 57 California county governments over four election cycles, we find compelling evidence of traffic enforcement policy manipulation by county sheriffs during election years. Specifically, a county's per capita traffic fines revenue is 9% lower in the election than in nonelection years. The magnitude of the political cycle intensifies when an election is competitive. Our …

Do Major Customers Affect Firms' Environmental, Social And Governance Activities?, Feng Dong, John A. Doukas, Stephanie Walton, Rongyao Gloria Zhang, Yiyang Zhang

Faculty Publications

We examine the role of major customers in shaping firms' environmental, social and governance (ESG) practices. We find that firms with major customer relationships undertake fewer ESG activities compared to those without such ties. The association is attenuated when institutional ownership is high, firms are less diversified, customers exhibit greater bankruptcy risk and lower switching costs and during periods of elevated equity market sentiment. Taken together, our findings highlight that reliance on a concentrated customer base can weaken firms’ incentives to engage in ESG practices, with important implications for supply chain sustainability.

The Work Of An Hour: A Case Study Of Propaganda, Michael F. Russo

Faculty Publications

This research paper discusses the messaging of United States President George W. Bush and his administration regarding the U.S. led invasion of Iraq. Transcripts of presidential communications, national news programs, and public opinion polls from 2001-03 were analyzed to identify patterns in these communications. This review demonstrated techniques similar to those used in historical propaganda campaigns to sway public opinion. The introduction and repetition of key terminology from the government was followed by magnification by television news programs. These messages were broadcast despite lack of evidence of Iraq’s involvement with the 9/11 attacks or their possession of weapons of mass …

Louisiana Agriculture Magazine, Winter 2025, Lsu Agcenter

Louisiana Agriculture

LSU AgCenter nutrition education programs have always aimed to support the health and well-being of Louisianans. Helping residents eat healthier, be more physically active and maintain a healthy weight are important parts of disease prevention. Building healthy, thriving communities across Louisiana can support reduced healthcare costs, improved workforce productivity and an enhanced quality of life for everyone in our state.

All-Electron Molecular Tunnel Ionization Based On The Weak-Field Asymptotic Theory In The Integral Representation, Imam S. Wahyutama, Denawakage D. Jayasinghe, François Mauger, Kenneth Lopata, Kenneth J. Schafer

Faculty Publications

Tunnel ionization (TI) underlies many important ultrafast processes, such as high-harmonic generation and strong-field ionization. Among the existing theories for TI, many-electron weak-field asymptotic theory (ME-WFAT) is by design capable of accurately treating many-electron effects in TI. An earlier version of ME-WFAT relied on an accurate representation of the asymptotic tail of the orbitals, which hindered its implementation in Gaussian-basis-set-based quantum chemistry programs. In this work, we reformulate ME-WFAT in the integral representation, which makes the quality of the asymptotic tail much less critical, hence greatly facilitating its implementation in standard quantum chemistry packages. The integral reformulation introduced here is …

Lsu General Catalog 2025-2026, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The LSU General Catalog includes information on registration and financial aid as well as academic services offered to all students.

Louisiana Survey 2025, Lsu Reilly Center For Media & Public Affairs

Reilly Center Louisiana Surveys

The 2025 Louisiana Survey is the latest in an annual series of statewide surveys from the Reilly Center for Media & Public Affairs at Louisiana State University’s Manship School of Mass Communication.

Reflecting the continuing evolution of survey research, we use two approaches in this year’s survey:

1. In partnership with the research firm YouGov, we administered an online survey to a nonprobability sample of Louisiana residents who participate in the YouGov panel, selected to represent the state’s adult population geographically and demographically.
2. We use a traditional probability-sampling approach to draw landline and cell phone numbers for a live-interview …

Poromechanical Solution For One-Dimensional Large Strain Consolidation Of Modified Cam-Clay Soil, Sheng Li Chen, Hai Sui Yu, Younane N. Abousleiman, Christopher E. Kees

Faculty Publications

A theoretical model describing the one-dimensional large strain consolidation of the modified Cam-Clay soil is presented in this paper. The model is based on the Lagrangian formulation and is capable of featuring the variability of soil compressibility (inherently due to the direct incorporation of the specific Cam-Clay plasticity model) and permeability, as well as the impact of the overconsolidation ratio (OCR). The derivation starts from the establishment of the incremental stress–strain relations for both purely elastic and elastoplastic deformations under one-dimensional compression conditions, and thereafter the coefficients of compressibility/volume change that are essential to the consolidation analysis. The governing partial …

Nipping Crime In The Bud: The Spatial Relationship Between Crime And Meeting People’S Needs, Alicia Cerquone

LSU Master's Theses

The recent high-profile killings of people by the police brought attention to police violence, and prompted activists to call for an end to police violence. Drawing from an understanding of strain theory (Merton, 1938; Farnworth & Leiber, 1989; Agnew, 1992; Agnew, 2001; Agnew, 2008) and Tucker and Cadora’s (2003) ideas of justice reinvestment, this research was designed with the belief that police funding can be better used to help people meet their basic needs of housing, healthcare, and education. This research is concerned with the spatial relationship between crime and the quality of social infrastructure, or the programs in place …

Lignin Cationization For The Removal Of Phosphates And Nitrates From Effluents Of Wastewater Treatment Plants, Fannyuy V. Kewir

LSU Master's Theses

The removal of phosphates and nitrates from wastewater treatment plant (WWTP) effluents is important for preventing pollution of receiving waters. In this study, we chemically modified alkaline lignin (aLN) with quaternary ammonium groups to obtain biodegradable cationic lignin (cLN). We characterized the cLN and tested its efficacy for removing phosphates and nitrates in a lab setting and on field-collected WWTP samples. Adsorption isotherm and kinetic studies were performed in aqueous media, and the effects of several variables (contact time, pH, initial concentration, and adsorbent dose) were investigated. The Langmuir isotherm described phosphate and nitrate adsorption well, with R2 values of …

Digital Screen Media Use, Movement Behaviors, And Child Health, Mark S. Tremblay, Nicholas Kuzik, Stuart J.H. Biddle, Valerie Carson, Mai J.M. Chinapaw, Dorothea Dumuid, Wendy Yajun Huang, Travis J. Saunders, Amanda E. Staiano, Russell R. Pate

Population and Public Health Science Faculty Publications

This chapter summarizes the associations between children's digital screen media use (DSMU) and their health, within the 24-h movement behavior framework (physical activities, sedentary behaviors, sleep), provides recommendations for healthy DSMU, and highlights future research directions. Key concepts include behavior displacement, combined associations, and DSMU context and content. Displacement examples include more DSMU decreasing time for healthier behaviors (e.g., physical activity or sleep) or replacing reading books and magazines with DSMU alternatives (e.g., texting, social media). How DSMU affects the relationships between various combinations of movement behaviors and children's health is largely unknown. Total DSMU is most frequently studied, but …

Gna13 Suppresses Proliferation Of Er+ Breast Cancer Cells Via Erα Dependent Upregulation Of The Myc Oncogene, Lalitha Vaishnavi Subramanyan, Suhail Ahmed Kabeer Rasheed, Lijin Wang, Sujoy Ghosh, Michelle Shi Ning Ong, Manikandan Lakshmanan, Mei Wang, Patrick J. Casey

Division of Basic Science Faculty Publications

GNA13 (Gα13) is one of two alpha subunit members of the G12/13 family of heterotrimeric G-proteins which mediate signaling downstream of GPCRs. It is known to be essential for embryonic development and vasculogenesis and has been increasingly shown to be involved in mediating several steps of cancer progression. Recent studies found that Gα13 can function as an oncogene and contributes to progression and metastasis of multiple tumor types, including ovarian, head and neck and prostate cancers. In most cases, Gα12 and Gα13, as closely related α-subunits in the subfamily, have similar cellular roles. However, in recent years their differences in …

Epitaxial Films And Devices Of Transparent Conducting Oxides: La:Basno3, Prosper Ngabonziza, Arnaud P. Nono Tchiomo

Faculty Publications

This paper reviews recent developments in materials science and device physics of high-quality epitaxial films of the transparent perovskite La-doped barium stannate, La:BaSnO3. It presents current efforts in the synthesis science of epitaxial La:BaSnO3 films for achieving reduced defect densities and high electron mobility at room temperature. We discuss the scattering mechanisms and the route toward engineering defect-free epitaxial La:BaSnO3 heterostructures. By combining chemical surface characterization and electronic transport studies, special emphasis is laid on the proper correlation between the transport properties and the electronic band structure of La:BaSnO3 films and heterostructures. For application purposes, interesting optical properties of La:BaSnO3 …

Identification And Expression Analysis Of Phosphate Transporter 1 (Pht1) Genes In The Highly Phosphorus-Use-Efficient Hakea Prostrata (Proteaceae), Benjamin J. Nestor, Toby Bird, Anita A. Severn-Ellis, Philipp E. Bayer, Kosala Ranathunge, M. Asaduzzaman Prodhan, Maheshi Dassanayake, Jacqueline Batley, David Edwards, Hans Lambers, Patrick M. Finnegan

Faculty Publications

Heavy and costly use of phosphorus (P) fertiliser is often needed to achieve high crop yields, but only a small amount of applied P fertiliser is available to most crop plants. Hakea prostrata (Proteaceae) is endemic to the P-impoverished landscape of southwest Australia and has several P-saving traits. We identified 16 members of the Phosphate Transporter 1 (PHT1) gene family (HpPHT1;1-HpPHT1;12d) in a long-read genome assembly of H. prostrata. Based on phylogenetics, sequence structure and expression patterns, we classified HpPHT1;1 as potentially involved in Pi uptake from soil and HpPHT1;8 and HpPHT1;9 as potentially involved in Pi uptake and root-to-shoot …

The Crystal Structure Of Acinetobacter Baumannii Bacterioferritin Reveals A Heteropolymer Of Bacterioferritin And Ferritin Subunits, Huili Yao, Suliat Alli, Lijun Liu, Anabel Soldano, Anne Cooper, Leo Fontenot, Dristen Verdin, Kevin P. Battaile, Scott Lovell, Mario Rivera

Faculty Publications

Iron storage proteins, e.g., vertebrate ferritin, and the ferritin-like bacterioferritin (Bfr) and bacterial ferritin (Ftn), are spherical, hollow proteins that catalyze the oxidation of Fe²⁺ at binuclear iron ferroxidase centers (FOC) and store the Fe³⁺ in their interior, thus protecting cells from unwanted Fe³⁺/Fe²⁺ redox cycling and storing iron at concentrations far above the solubility of Fe³⁺. Vertebrate ferritins are heteropolymers of H and L subunits with only the H subunits having FOC. Bfr and Ftn were thought to coexist in bacteria as homopolymers, but recent evidence indicates these molecules are heteropolymers assembled …

Research Overview On Urban Heat Islands Driven By Computational Intelligence, Chao Liu, Siyu Lu, Jiawei Tian, Lirong Yin, Lei Wang, Wenfeng Zheng

Faculty Publications

In recent years, the intensification of the urban heat island (UHI) effect has become a significant concern as urbanization accelerates. This survey comprehensively explores the current status of surface UHI research, emphasizing the role of land use and land cover changes (LULC) in urban environments. We conducted a systematic review of 8260 journal articles from the Web of Science database, employing bibliometric analysis and keyword co-occurrence analysis using CiteSpace to identify research hotspots and trends. Our investigation reveals that vegetation cover and land use types are the two most critical factors influencing UHI intensity. We analyze various computational intelligence techniques, …

Current Situation And Prospect Of Geospatial Ai In Air Pollution Prediction, Chunlai Wu, Siyu Lu, Jiawei Tian, Lirong Yin, Lei Wang, Wenfeng Zheng

Faculty Publications

Faced with increasingly serious environmental problems, scientists have conducted extensive research, among which the importance of air quality prediction is becoming increasingly prominent. This article briefly reviews the utilization of geographic artificial intelligence (AI) in air pollution. Firstly, this paper conducts a literature metrology analysis on the research of geographical AI used in air pollution. That is, 607 documents are retrieved from the Web of Science (WOS) using appropriate keywords, and literature metrology analysis is conducted using Citespace to summarize research hotspots and frontier countries in this field. Among them, China plays a constructive role in the fields of geographic …

Gleaning Rural Journalism: Rural Journalists' Agricultural And Environmental Reporting Utilizing Community Storytelling Networks☆, Jessica Walsh, Mildred F. Perreault, Greg Perreault, Ruth Moon

Faculty Publications

Environmental concerns are growing in parts of the rural United States as drinking water wells become contaminated with agrichemicals, and climate change impacts such as drought and extreme rain events disrupt farming practices. Analyzing in-depth interviews with 29 U.S. rural journalists, we explore the role rural journalists play when reporting on the environment as it relates to agricultural issues. Findings show that reporting about the environment—such as weather, climate change, water shortages, and droughts—appear in rural journalists' stories given those topics' relevance to their rural communities and the social systems forces exerting influence on journalists, yet rural journalists often do …

Detecting N-Phenyl-2-Naphthylamine, L-Arabinose, D-Mannose, L-Phenylalanine, L-Methionine, And D-Trehalose Via Photocurrent Measurement, Feng Li, Ruoxi Yang, Jian Xu, Guohai Xu, Ye Wu

Faculty Publications

The concentration of small molecules reflects the normality of physiological processes in the human body, making the development of simple and efficient detection equipment essential. In this work, inspired by a facile strategy in point-of-care detection, two devices were fabricated to detect small molecules via photocurrent measurement. A linear response of the photocurrent against the concentration of the small molecules was found. In the first device, metal ions were introduced into gel substrates made by xanthan gum to enhance photocurrent response. N-phenyl-2-naphthylamine was measured when iron or manganese ions were used. L-Phenylalanine was measured when the gel was modified by …

Measuring And Modeling Grease Degradation, Alan Gurt

LSU Doctoral Dissertations

Lubricating grease is an ideal lubricant for many devices such as roller bearings, journal bearings, slide bearings, gears, and many types of joints due to its simplicity. Once grease is put in place, it can often provide adequate lubrication for extended periods of time without the need for a complex supply system that would generally be needed for oil lubrication. However, during prolonged use, various degradation mechanisms change the physical and chemical properties of grease, possibly leading to inadequate performance and machinery failure.

In order to succinctly quantify the degradation of grease, it is essential to have robust, meaningful test …

Effect Of Workload And Trust On Automation Levels In Human-Robot Collaboration, Abhiram Maddula

LSU Master's Theses

Automation is becoming increasingly common in manufacturing and assembly plants. The future lies in hybrid workspaces where the strengths of humans and robots complement each other, with robots excelling in precision, speed, and strength, and humans excelling in creativity, emotional intelligence, and complex decision-making. Collaborative robots can foster a more efficient and productive work environment by bridging the gap between human and machine capabilities. This study examines how semi-automated and automated modes impact human-robot collaboration, focusing on mental workload, trust, and task performance.

In this experiment, 58 participants performed a primary task alongside a collaborative robot assembling a miniature lamppost …