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Manufacturing Enterprises' Gross Margins And Performance: A Study On The Moderating Effect Of Management Expenses And R&D Expenses, Jiuliu Zhang

Dissertations and Theses Collection (Open Access)

In the context of globalization, manufacturing enterprises are integral to national economies, with their financial stability closely related to increasingly fierce market competition. Among various financial metrics, gross margin stands out as a key indicator of product profitability, significantly impacting production decisions, cost control, and pricing strategies. Understanding the relationship between the gross margins of manufacturing enterprises and their performance is essential for optimizing their financial structures and enhancing their market competitiveness. The study aims to investigate the correlation between gross margin and enterprise performance by developing complex, scientifically sound models and utilizing big data analysis technology. Additionally, it examines …

A General Model For The Ductility Of Intermetallics Applied To Fe-Co Alloys, Wesley Everhart, Joseph Newkirk

Materials Science and Engineering Faculty Research & Creative Works

The mechanical properties, specifically ductility, of high performing soft magnets such as Fe-Co alloys are a limiting factor to their broader use in a number of systems. The understanding of the mechanical robustness in these materials is currently insufficient to be able to support the growing interest in applications such as magnetic shielding or electric motors. Fe-Co alloys provide the highest commercially available magnetic saturation and high magnetic permeability but have very poor ductility. The addition of vanadium to these alloys has allowed for significant commercialization and some ductility improvements, but the fundamental reasons for the observed improvements are not …

They Never Left: Drivers Of Memory Of Dictatorship And Impressions Of Ferdinand E. Marcos As President After February 1986, Jorge V. Tigno, Geoffrey M. Ducanes, Steven Rood, Vladymir Joseph A. Licudine

Economics Department Faculty Publications

Between 1972 and 1986, Ferdinand E. Marcos of the Philippines headed an autocratic system that allowed him to rule with little to no accountability. Some 36 years after FM (as he is popularly called) and family were driven from power into exile in Hawaii, his son, Ferdinand ‘Bongbong’ Marcos, Jr., was overwhelmingly elected President in the May 2022 general elections. This turnaround seemed puzzling to many, but others saw a long-term deliberate process of rehabilitation after the family returned to the Philippines. Our paper explores how Filipinos remembered FM in the years after his ouster. What drives the memory of …

Observation Of Dense Collisional Soliton Complexes In A Two-Component Bose-Einstein Condensate, Sean M. Mossman, Garyfallia C. Katsimiga, Simeon I. Mistakidis, Alejandro Romero-Ros, Thomas M. Bersano, Peter Schmelcher, Panayotis G. Kevrekidis, Peter Engels

Physics Faculty Research & Creative Works

Solitons Are Nonlinear Solitary Waves Which Maintain their Shape over Time and through Collisions, Occurring in a Variety of Nonlinear Media from Plasmas to Optics. We Present an Experimental and Theoretical Study of Hydrodynamic Phenomena in a Two-Component Atomic Bose-Einstein Condensate Where a Soliton Array Emerges from the Imprinting of a Periodic Spin Pattern by a Microwave Pulse-Based Winding Technique. We Observe the Ensuing Dynamics Which Include Shape Deformations, the Emergence of Dark-Antidark Solitons, Apparent Spatial Frequency Tripling, and Decay and Revival of Contrast Related to Soliton Collisions. for the Densest Arrays, We Obtain Soliton Complexes Where Solitons Undergo Continued …

Publisher Correction: Observation Of Dense Collisional Soliton Complexes In A Two-Component Bose-Einstein Condensate (Communications Physics, (2024), 7, 1, (163), 10.1038/S42005-024-01659-W), Sean M. Mossman, Garyfallia C. Katsimiga, Simeon I. Mistakidis, Alejandro Romero-Ros, Thomas M. Bersano, Peter Schmelcher, Panayotis G. Kevrekidis, Peter Engels

Physics Faculty Research & Creative Works

In the first paragraph of the Methods section, the sentence "We begin with an elongated BEC of approximately 9 x 10587Rb atoms…," has erroneously been written without a space between the two superscripts "5" and "87". This has now been corrected in both the HTML and PDF of the article, and the same expression reads: We begin with an elongated BEC of approximately 9 x 105 87Rb atoms…"

Author Correction: Dual Nature Of Magnetism Driven By Momentum Dependent F-D Kondo Hybridization (Communications Physics, (2024), 7, 1, (186), 10.1038/S42005-024-01631-8), Byungkyun Kang, Yongbin Lee, Liqin Ke, Hyunsoo Kim, Myoung Hwan Kim, Chul Hong Park

Physics Faculty Research & Creative Works

Correction to: Communications Physicshttps://doi.org/10.1038/s42005-024-01631-8, published online 12 June 2024 In this article the grant number DE-AC02-07CH11358 relating to Ames National Laboratory was omitted. The original article has been corrected.

Publisher Correction: Observation Of Dense Collisional Soliton Complexes In A Two-Component Bose-Einstein Condensate (Communications Physics, (2024), 7, 1, (163), 10.1038/S42005-024-01659-W), Sean M. Mossman, Garyfallia C. Katsimiga, Simeon I. Mistakidis, Alejandro Romero-Ros, Thomas M. Bersano, Peter Schmelcher, Panayotis G. Kevrekidis, Peter Engels

Physics Faculty Research & Creative Works

In the first paragraph of the Methods section, the sentence "We begin with an elongated BEC of approximately 9 x 10587Rb atoms…," has erroneously been written without a space between the two superscripts "5" and "87". This has now been corrected in both the HTML and PDF of the article, and the same expression reads: We begin with an elongated BEC of approximately 9 x 105 87Rb atoms…"

Density Effects On The Interferometry Of Efimov States By Modulating Magnetic Fields, G. Bougas, S. I. Mistakidis, P. Giannakeas

Physics Faculty Research & Creative Works

Dynamical association of Efimov trimers in thermal gases by means of modulated magnetic fields has proven very fruitful in determining the binding energy of trimers. The latter was extracted from the number of remaining atoms, which featured oscillatory fringes stemming from the superposition of trimers with atom-dimers. Subsequent theoretical investigations utilizing the time-dependent three-body problem revealed additional association mechanisms, manifested as superpositions of the Efimov state with the trap states and the latter with atom-dimers. The three atoms were initialized in a way to emulate a thermal gas with uniform density. Here, this analysis is extended by taking into account …

Multiphoton-Dressed Rydberg Excitations In A Microwave Cavity With Ultracold Rb Atoms, J. D.Massayuki Kondo, Seth T. Rittenhouse, Daniel Varela Magalhaes, Vasil Rokaj, S. I. Mistakidis, H. R. Sadeghpour, Luis Gustavo Marcassa

Physics Faculty Research & Creative Works

We investigate magneto-optical trap-loss spectroscopy of Rydberg excited Rb85 (66≤n≤68S1/2) atoms, placed inside a tailored microwave cavity. The cavity frequency at 13.053 GHz is in resonance with the 67S1/2→66P3/2 transition, inducing a ladder multiphoton microwave Rydberg absorption and emission. The observed spectra are modeled with an extended Jaynes-Cummings formalism that accounts for nonlinear multiphoton absorption from and emission into the cavity, the loss from the trap due to Rydberg excitation, and cavity imperfection. We calculate the average photons in each spectral feature and find evidence for fractional photon emission into the cavity modes within the loss spectra. The microwave cavity …

Nodal Superconductivity In Miassite Rh17s15, Hyunsoo Kim, Makariy A. Tanatar, Marcin Kończykowski, Romain Grasset, Udhara S. Kaluarachchi, Serafim Teknowijoyo, Kyuil Cho, Aashish Sapkota, John M. Wilde, Matthew J. Krogstad, Sergey L. Bud'ko, Philip M.R. Brydon, Paul C. Canfield, Ruslan Prozorov

Physics Faculty Research & Creative Works

Solid state chemistry has produced a plethora of materials with properties not found in nature. For example, high-temperature superconductivity in cuprates is drastically different from the superconductivity of naturally occurring metals and alloys and is frequently referred to as unconventional. Unconventional superconductivity is also found in other synthetic compounds, such as iron-based and heavy-fermion superconductors. Here, we report compelling evidence of unconventional nodal superconductivity in synthetic samples of Rh₁₇S₁₅ (Tc = 5.4 K), which is also found in nature as the mineral miassite. We investigated the temperature-dependent variation of the London penetration depth Δλ(T) and the disorder …

Investigating The Effect Of Active Living Wall On Indoor Air Quality And Energy Consumption: Case Study In Uaeu Closed Offices, Atina Mohsen Ghunaim

Theses

Extreme hot climates can significantly affect Indoor Air Quality (IAQ) and ventilation, resulting in higher energy demands. Numerous studies have demonstrated that outdoor greening, such as trees and landscaped areas, can reduce a building’s energy consumption. However, less research has been conducted on the impact of indoor vegetation on energy use and air quality. Indoor vegetation decreases Carbon Dioxide (CO₂) concentration by absorbing CO₂ and releasing oxygen (O₂), while the evapotranspiration process further enhances (IAQ) and reduces energy expenditure. The United Arab Emirates has dry arid climate and summers with high humidity levels, causing individuals to stay longer indoors, which …

Induction Program Practices On New Teachers In Public School In The United Arab Emirates, Reem Mohammed Al Hajri

Theses

This study examines the induction program practices for new teachers in United Arab Emirates (UAE) public schools. It evaluates key components—including orientation, mentoring, professional development, teacher networking, and administrative support— and analyzes their impact on new teachers’ integration, professional growth, and overall satisfaction. Additionally, it investigates how demographic factors such as nationality, educational qualifications, and teaching experience influence teachers’ experiences and perceptions. By employing a cross-sectional survey design, quantitative data were collected from 150 public school teachers across various emirates. Findings revealed that most new teachers held positive perceptions of the induction program domains. Gender comparisons indicated minimal differences, except …

Full Issue 16(5) Special Issue

Journal of Comparative & International Higher Education

No abstract provided.

Practice Unveils Weaknesses: Analysing The Implementation Of Regulations On Seafarers’ Work/Rest Hours, Bikram S. Bhatia

World Maritime University Ph.D. Dissertations

Seafarers’ fatigue risk management is rooted in regulations on manning and work/rest hours. These regulations establish a minimum fatigue management standard achieved through work/rest hours compliance. Seafarers must maintain daily records of their work/rest hours and report any non-compliance to their company. However, adjustments to these records have been reported in the literature. Such malpractice obscures instances of non- compliance and hinders the feedback necessary for resolving these issues, including flag State review and amendments to minimum safe manning documents. It compromises the integrity of fatigue risk management and underscores the need for further research.

This study examined the implementation …

Synergistic Anticancer Effect Of Pistacia Lentiscus Essential Oils And 5-Fluorouracil Co-Loaded Onto Biodegradable Nanofibers Against Melanoma And Breast Cancer, Obaydah Abd Alkader Alabrahim, Hassan Mohamed El Said Azzazy

Faculty Journal Articles

Chemoresistance and severe toxicities represent major drawbacks of chemotherapy. Natural extracts, including the essential oils of Pistacia lentiscus (PLEO), exhibit substantial anticancer and anti-inflammatory activities where different cancers are reported to dramatically recess following targeting with PLEO. PLEO has promising antimicrobial, anticancer, and anti-inflammatory properties. However, the therapeutic properties of PLEO are restricted by limited stability, bioavailability, and targeting ability. PLEO nanoformulation can maximize their physicochemical and therapeutic properties, overcoming their shortcomings. Hence, PLEO was extracted and its chemical composition was determined by GC–MS. PLEO and 5-Fluorouracil (5FU) were electrospun into poly-ε-caprolactone nanofibers (PCL-NFs), of 290.71 nm to 680.95 nm …

The Role Of Task-Based Language Assessment In English Language Learning And Learner Autonomy Enhancement In An Efl High School Context In The Uae, Eman Yousef Mahmoud

Dissertations

Assessment plays an integral role in education, incorporating various types that serve multiple purposes. In language education, the proper integration of formative assessment practices, such as Task-Based Language Assessment (TBLA), is crucial to improve students’ language learning. This study explores the impact of implementing TBLA in an English as a foreign language (EFL) high school context on language learning. It also investigates whether and to what extent TBLA application promotes Learner Autonomy (LA). Furthermore, this study examines the teacher’s and students’ perceptions of the intervention and its impact on linguistic and non-linguistic skills. The study used an experimental mixed methods …

Improving Communication Between Providers And Patients During Pediatric Cancer Care, Yuritza Arciga

Capstone Projects and Master's Theses

The Listen First Survivorship project explores the communication barriers faced by young adults and their families during cancer treatment. The project focuses on identifying communication gaps and developing strategies to better support Jacob’s Heart's young adult cancer survivors. This project was implemented by Jacob’s Heart Children’s Cancer Support Services and Dr. Stephanie Smith of the Pediatric Oncology department at Stanford Children’s Hospital. The participants described feeling overwhelmed with too much information and not enough answers to their questions during their appointments. Through qualitative interviews and focus groups, key findings revealed that young adults experienced significant gaps in knowledge due to …

Communicating Development For Adults With Developmental Disabilities, Ruby Mandujano

Capstone Projects and Master's Theses

Adults with intellectual and developmental disabilities (IDDs) often face significant communication barriers that hinder their ability to express needs, access essential services, and engage fully in social, vocational, and healthcare settings. This paper explores how American Sign Language (ASL) can effectively reduce these communication barriers and promote self-advocacy among adults with developmental disabilities. The Gateway Center of Monterey County, an agency serving adults with intellectual and developmental disabilities aged 18 and over, provides a model of communication support by incorporating ASL into its programs. Although Gateway serves only a tiny percentage of the larger population of adults with intellectual and …

Comprehensive Community Medicine, Alexander Walther

Capstone Projects and Master's Theses

Comprehensive Community Medicine (CCM) is a theoretical framework designed to address the complex needs of individuals with dual diagnoses of mental illness and substance use disorders (SUDs). Dual diagnosis is highly prevalent, particularly among populations experiencing homelessness, and is associated with poorer health outcomes and increased healthcare service utilization. Structural inequities, including a fractured healthcare system, exacerbate the challenges faced by this vulnerable group. Research indicates that effective care for dually diagnosed individuals requires a layered approach addressing clinical, systemic, legal, and housing barriers.

The development of CCM has been informed by interviews with local stakeholders, including County EMS board …

A Data-Driven Approach For Automated Multi-Site Competitive Facility Location, Ming Hui Tan, Kar Way Tan, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

This paper addresses the challenge of optimal retail expansion in competitive urban environments through a novel approach to the Competitive Facility Location (CFL) problem. Traditional methods for solving CFL problems often struggle with large-scale scenarios, relying on manual pre-selection of candidate sites and imposing limitations on the number of new locations. Our approach leverages Adaptive Large Neighborhood Search (ALNS) enhanced with data enrichment techniques, including community detection on road networks and population weighting based on mobility data. We developed two ALNS variants: Community Geometric Centroid (CGC-ALNS) and Population Weighted Centroid (PWC-ALNS). These methods automate site selection, eliminating manual pre-selection while …

Harnessing The Power Of Ai-Instructor Collaborative Grading Approach: Topic-Based Effective Grading For Semi Open-Ended Multipart Questions, Phyo Yi Win Myint, Siaw Ling Lo, Yuhao Zhang

Research Collection School Of Computing and Information Systems

Semi open-ended multipart questions consist of multiple sub questions within a single question, requiring students to provide certain factual information while allowing them to express their opinion within a defined context. Human grading of such questions can be tedious, constrained by the marking scheme and susceptible to the subjective judgement of instructors. The emergence of large language models (LLMs) such as ChatGPT has significantly advanced the prospect of automatic grading in educational settings. This paper introduces a topic-based grading approach that harnesses LLM capabilities alongside a refined marking scheme to ensure fair and explainable assessment processes. The proposed approach involves …

Gtree: Gpu-Friendly Privacy-Preserving Decision Tree Training And Inference, Qifan Wang, Shujie Cui, Lei Zhou, Ye Dong, Jianli Bai, Yun Sing Koh, Giovanni Russello

Research Collection School Of Computing and Information Systems

Outsourcing Decision tree (DT) training and inference to cloud platforms raises privacy concerns. Recent Secure Multi-Party Computation (MPC)-based methods are hindered by heavy overhead. Few recent studies explored GPUs to improve MPC-protected deep learning, yet integrating GPUs into MPC-protected DT with massive data-dependent operations remains challenging, raising question: can MPC-protected DT training and inference fully leverage GPUs for optimal performance?We present GTree, the first scheme that exploits GPU to accelerate MPC-protected secure DT training and inference. GTree is built across 3 parties who jointly perform DT training and inference with GPUs. GTree is secure against semi-honest adversaries, ensuring that no …

Long-Term Push–Pull Cropping System Shifts Soil And Maize-Root Microbiome Diversity Paving Way To Resilient Farming System, Abdul A. Jalloh, Fathiya Mbarak Khamis, Abdullahi Ahmed Yusuf, Sevgan Subramanian, Daniel Munyao Mutyambai

All Peer-Reviewed Publications

Background: The soil biota consists of a complex assembly of microbial communities and other organisms that vary significantly across farming systems, impacting soil health and plant productivity. Despite its importance, there has been limited exploration of how different cropping systems influence soil and plant root microbiomes. In this study, we investigated soil physicochemical properties, along with soil and maize-root microbiomes, in an agroecological cereal-legume companion cropping system known as push–pull technology (PPT). This system has been used in agriculture for over two decades for insect-pest management, soil health improvement, and weed control in sub-Saharan Africa. We compared the results with …

Proceeding Toward The Maximum Of Solar Cycle 25 With A Radiation Environment Similar To The Previous Cycle, Fatemeh Rahmanifard, Morgan L. Macleod, Wouter C. De Wet, Andrew P. Jordan, Jody K. Wilson, Harlan E. Spence, Nathan A. Schwadron

Faculty Publications

The Sun exhibited lower-than-average activity levels, including a weak maximum and a prolonged minimum in the solar cycle (SC) 24. Thiswas following a 60-year trend of weakening solar activity, leading to speculations that we could be moving into another secular minimum scenario like the Dalton or the Gleissberg periods. During such periods, the fluxes of galactic cosmic rays (GCRs) increase significantly, introducing radiation hazards for long-term crewed space explorations. In our previous work, we predicted the level of solar activity, and thus, the radiation environment for SC25 will be similar to SC24. In this paper, we show that, to date, …

Benefits Of Teaching Pre-Literacy In Waldorf Education In Early Childhood, April Guerrero

Capstone Projects and Master's Theses

This senior capstone research project examines the benefits of teaching pre-literacy in Waldorf education in early childhood. In Waldorf Education, literacy development incorporates differentiated instructions that fosters cognitive and social emotional learning of their students. Through the use of literature review and several teachers in various grades of Waldorf schools, the result findings revealed that pedagogical practices around literacy instructions promote critical thinking skills, nurtures children’s creative expression, and imagination. Literacy curriculum in Waldorf schools allows students to create tangible evidence of self-expressions and communication skills. Given its emphasis on holistic curriculum, it allows teachers to engage with their diverse …

Survival Of The Smartest? The Evolutionary Ecology Of Cognition In Anolis Lizards, Mahaut V. Sorlin

LSU New Orleans Theses and Dissertations

Cognitive processes such as learning, memory, and decision-making are integral to an organism’s fitness, allowing to integrate cues from its environment and adjust its behavior accordingly. Historically, cognitive abilities were thought to have evolved according to a Scala Naturae design—an idea that has since been disproven—which suggested that complex cognitive abilities were exclusive to “higher” taxa. This perspective has created significant phylogenetic gaps in our understanding of cognitive evolution. In this dissertation I aimed to address this issue by investigating the evolution of cognition in reptiles, focusing on the green (Anolis carolinensis) and the brown anole (Anolis …

Deep Learning Approach For Accurate Segmentation Of Oil Spills In Marine Systems, Mohamed Elsheref

LSU New Orleans Theses and Dissertations

Oil spills present critical environmental hazards, threatening marine ecosystems and necessitating fast, accurate detection for effective mitigation. Synthetic Aperture Radar (SAR) imagery has been instrumental in detecting oil spills, but manual interpretation is often inefficient and prone to errors. This study addresses the limitations of manual methods by proposing a deep learning approach for automated oil spill detection and segmentation.

Utilizing a novel transfer learning-based semantic segmentation model, this research focuses on detecting oil slicks on the sea surface with higher accuracy and efficiency. The model leverages pre-trained networks and incorporates U-Net variants, including UNet++ and MultiResUNet, to optimize spatial …

Examining The Impact Of Eds And Meds Anchor Institutions On Local Communities: A Mixed Methods Case Study On University Medical Center New Orleans, Samuel P. Firmin

LSU New Orleans Theses and Dissertations

The purpose of this study was to examine how the University Medical Center New Orleans (UMCNO), a major Eds and Meds anchor institution, has contributed to the well-being outcomes of surrounding communities within the New Orleans BioDistrict since its opening in 2015. Eds and Meds institutions often have mixed impacts on their local communities, and little research has focused on their effects in the Deep South, particularly in New Orleans, a region with pronounced socioeconomic disparities. This study aimed to address this research gap by investigating the following question: to what extent does UMCNO's Community Health Needs Assessments align with …

New Constraints On The Stratigraphic Architecture And Evolution Of Mississippi River Delta Lobe Activity: Barataria Basin, Southeastern La, Wilke Coleman

LSU New Orleans Theses and Dissertations

Barataria Basin is a shallow water, interdistributary estuary that has evolved in response to dynamic depositional regimes governed by distributary avulsion and reworking of sediments by coastal processes. In the Mississippi River delta plain, the migratory nature of the River has produced an evolving landscape constructed through episodes of regressive and transgressive sedimentation. These processes produce unique depositional signatures in the stratigraphic record, however the transgressive component of the delta cycle often results in obliteration of the regressive phase. This study uses a modern suite of geophysical and sediment core data to construct a revised geologic framework in Barataria Basin, …

Benefits Of After School Programs On The Academic Success On Lower Elementary School Students, Jessica Rodriguez Rodriguez

Capstone Projects and Master's Theses

After School programs offer significant benefits to students. They support students by offering tutoring, homework assistance, enrichment activities that reinforce classroom learning, and helping young students develop essential skills in reading, math, and critical thinking. The purpose of my capstone project is to examine the benefits of afterschool programs on the academic success of lower elementary school students. Through literature review, interviews with teachers, a coordinator, an academic coordinator, an administrator, and anonymous student surveys, the result findings indicated that afterschool programs are important and have benefited students in meeting their needs to foster their success. It also highlights the …