Digital Commons Network^™

Isolation And Identification Of Lactic Acid Bacteria From Bee Body Parts Surviving High Temperature Exposure, Sean Derrick M. Oliquiano, Noel G. Sabino, Renard M. Zamora

Journal Article

Temperature stress can influence the composition and stability of microbial communities associated with bees; however, some lactic acid bacteria (LAB) strains demonstrate tolerance to such environmental stresses, allowing them to persist and remain functionally active under challenging conditions. This study aimed to isolate and identify LAB associated with honeybees that are capable of surviving exposure to high temperatures. A total of 196 bee samples were processed under unheated and heat-treated conditions (80 °C for 10 min) to selectively recover thermotolerant bacteria. Cultivation on Yeast Glucose Starch Agar supplemented with nalidixic and pipemidic acid favored the growth of LAB under oxygen-limited …

Evaluation Of Bacterial Contamination On Flush Levers And Faucet Tap Handles In The Institute Of Biological Sciences Building Restrooms, University Of The Philippines Los Baños, Jan Patricia S. Estillore, Ronilo Jose D. Flores, Renard M. Jamora

Journal Article

Public restrooms provide convenience outside the home but are frequented by many users daily, creating a risk of microbial contamination on commonly touched surfaces such as flush levers and faucet handles. This study assessed microbial loads on these surfaces across genders and floors and aimed to isolate antibiotic-resistant Staphylococcus species and characterize Enterobacteriaceae. Samples were collected from flush levers and faucet handles across three floors of Wing C, Institute of Biological Sciences, University of the Philippines Los Baños, Laguna, Philippines. Results showed that faucet handles (7.9 × 109CFU/cm2) harbored higher microbial loads than flush levers (5.3 × 109CFU/cm2), and female …

Antibiotic Susceptibility Of Bacterial Contaminants In Tissue-Cultured Musa Acuminata ‘Lakatan’ And Musa Textilis ‘Inosa’, Brendell Philip B. Tejoso, Lourna Mae Q. David, Emmanuel L. Bernardo, Carlo Miguel C. Sandoval, Renard M. Jamora

Journal Article

Banana (Musa acuminata) and abaca (Musa textilis) are economically important crops in the Philippines. However, both crops are increasingly threatened by disease outbreaks, which can be mitigated through mass propagation using tissue culture techniques. Tissue culture propagation, however, is often compromised by bacterial contamination originating from either environmental or endophytic sources. In this study, bacterial isolates from environmental surfaces and tissue-cultured explants were characterized using morphological and biochemical profiling. Environmental isolates consisted of Gram-positive and Gram-negative short rods, whereas tissue culture contaminants were predominantly Gram-negative short rods and a single Gram- positive coccus. This morphological distinction suggests that the tissue …

Exploring The Relationship Between Health Literacy And Health Behavior Intention Through Mediation Moderation Analyses, Christopher M. Boerum

Electronic Theses and Dissertations

Vaccine hesitancy is a complicated public health issue that could compromise the well-being of our communities, evident not only in the COVID-19 pandemic but also in the increasing occurrences of vaccine hesitancy toward long-established vaccines, leading to breakthrough cases of diseases such as measles. Several factors can impact this complex phenomenon, such as health education (HE), attitudes towards social media (SMA) and exercise (EA), chronic disease exposure/risk perception (CDR), and demographic variables.

This study examined the relationship between health literacy (HL), and health behavior intention. The eHeals assessment measured HL and an assessment of vaccine attitude (VA) measured health behavior …

Travail Et Ia : État De La Question, Sophie De Serres, Alain Marchand

États de la question, rapports d’expertise et revues de littérature

L’évolution technologique rapide de l’intelligence artificielle (IA) et son utilisation de plus en plus importante dans les organisations et entreprises entraînent des transformations appréciables des milieux de travail. Une revue récente et non exhaustive de la littérature scientifique et grise permet de faire état des connaissances actuelles des répercussions de l’IA sur la santé et la sécurité du travail (SST), en soulignant à la fois les effets positifs observés chez les travailleuses et travailleurs, et les effets négatifs, principalement psychosociaux. Des situations d’utilisation de l’IA en amont, autrement qu’en temps réel (analyse prédictive, recrutement, formation ou recherche), sont également présentées …

3d Bioprinting Technology Innovation In Female Reproductive System, Siyao Chen, Tongxin Wang, Jiaqi Chen, Mingxing Sui, Luyao Wang, Xueyu Zhao, Jianqiao Sun, Yingli Lu

Department of Obstetrics & Gynecology Faculty Publications

Several diseases affect the female reproductive system, and both disease factors and treatments impact its integrity and function. Consequently, understanding the mechanisms of disease occurrence and exploring treatment methods are key research focuses in obstetrics and gynecology. However, constructing accurate disease models requires a microenvironment closely resembling the human body, and current animal models and 2D in vitro cell models fall short in this regard. Thus, innovative in vitro female reproductive system models are urgently needed. Additionally, female reproductive system diseases often cause tissue loss, yet effective tissue repair and regeneration have long been a bottleneck in the medical field. …

Predicting Mental Health Disparities Using Machine Learning For African Americans In Southeastern Virginia, Ismail El Moudden, Michael C. Bittner, Matvey V. Karpov, Isaac O. Osunmakinde, Akosua Acheamponmaa, Breshell J. Nevels, Mamadou T. Mbaye, Tonya L. Fields, Karthiga Jordan, Messaoud Bahoura

Department of Obstetrics & Gynecology Faculty Publications

This study examined mental health disparities among African Americans using AI and machine learning for outcome prediction. Analyzing data from African American adults (18–85) in Southeastern Virginia (2016–2020), we found Mood Affective Disorders were most prevalent (41.66%), followed by Schizophrenia Spectrum and Other Psychotic Disorders. Females predominantly experienced mood disorders, with patient ages typically ranging from late thirties to mid-forties. Medicare coverage was notably high among schizophrenia patients, while emergency admissions and comorbidities significantly impacted total healthcare charges. Machine learning models, including gradient boosting, random forest, neural networks, logistic regression, and Naive Bayes, were validated through 100 repeated 5-fold cross-validations. …

Treatment Effects Of Genital Mycoplasma Species In High-Risk Pregnant Individuals: A Retrospective Cohort Study, Takashi Yoshimasu, Tasuku Inao, Tetsuya Kawakita

Department of Obstetrics & Gynecology Faculty Publications

Objective

We aimed to estimate the causal effect of treatment for genital Mycoplasma species on preterm birth (PTB) and spontaneous abortion (SA). We also evaluated treatment effects separately for cases with co-infection of Ureaplasma and Mycoplasma species.

Methods

This was a retrospective observational cohort study at a single center. Singleton mothers with one or more risk factors for PTBs were screened and treated for genital Mycoplasma species. The treatment was repeated based on polymerase chain reaction (PCR) results after each course. We applied inverse probability treatment weighting, and risk differences (RDs) of the treatment effect on pregnancy outcomes were estimated …

Sleep Quality, Volumetric Brain Biomarkers For Ad, Executive Function, & Cognitive Decline In Older Adults, Layaly Shihadeh

Electronic Theses and Dissertations

Objective: Our aims were to examine differences in sleep quality sub scores and total scores across diagnostic groups cross-sectionally and longitudinally, correlate executive function scores and volumetric biomarkers of AD (prefrontal cortical and hippocampal volumes) with sleep quality scores, and explore how demographic variables may serve to moderate how sleep quality effects diagnosis. Method: 381 participants were classified into 3 diagnostic groups (Cognitively normal (CN), mild cognitive impairment (MCI), and dementia) based on the CDR global score. Prefrontal cortical volume, hippocampal volume, and PSQI total and sub scores were used as predictors of progression status. Daytime dysfunction, sleep duration, and …

Investigation Of Rna-Binding Protein Expression Changes In The Hippocampus Following Doxorubicin And Cyclophosphamide Treatment, Lijie Chen

Dissertations and Theses

This study investigated the molecular mechanisms underlying chemotherapy-induced cognitive impairment (CICI) following doxorubicin and cyclophosphamide treatment in a rat model, revealing three significant alterations in hippocampal tissue: selective downregulation of heterogeneous nuclear ribonucleoprotein A1 (hnRNPA1) (21% decrease, p=0.0298), compromised astrocytic network integrity evidenced by reduced GFAP-positive area in cornu ammonis 3 (CA3) (24%, pB=0.026) and dentate gyrus (DG) (19%, pB=0.027) regions, and elevated cellular senescence marker p19Arf specifically in DG (69%, pB=0.033) and CA3 (27%, pB=0.024). The inverse relationship between hnRNPA1 reduction and p19Arf elevation suggests a potential mechanistic link between RNA dysregulation and senescence induction, with pronounced vulnerability in …

Automated Thermo-Mechanical Therapy For Immediate Relief In Chronic Non-Specific Lower Back Pain (Cnslbp): A Randomized Controlled Trial, Kyle V. Donnery

Dissertations and Theses

Objective: Chronic non-specific lower back pain (cNSLBP) is a prevalent and disabling condition, imposing a substantial socioeconomic burden due to high healthcare costs and productivity losses, with limited accessible and effective long-term treatment options. Automated Thermo-mechanical Therapy (ATT) is a promising, non-drug intervention that leverages innovative technical advances to provide multimodal pain relief, offering accessibility and low-cost delivery. This study tested ATT for immediate pain relief in individuals with cNSLBP in a single-session, double-blind, randomized controlled trial.

Methods: Forty participants with cNSLBP were randomly assigned to receive either active ATT (n=20) or control ATT (n=20) in a 40-minute session. The …

Heightened Menopausal Symptoms Mediate The Associations Between Stress And Depressive Symptoms Among Midlife Women, Nicole Logan, Janis Gaudreau, Bridget Owens, Brietta M. Oaks, Christie L. Ward-Ritacco, Natalie J. Sabik

Kinesiology Faculty Publications

Objectives:

Investigate associations between stress, cortisol, menopause symptoms, and depression in a sample of midlife women. Because stress has been associated with greater menopause symptoms, we examined this as a mediator for the association between stress and depressive symptoms.

Methods:

Data from a cross-sectional study of 118 women (40-64 y old) were analyzed. Participants completed in-person visits and self-reported questionnaires, including the Menopause-Specific Quality of Life questionnaire, the Perceived Stress Scale, and the Center for Epidemiological Studies Depression Scale. Saliva samples were collected at 4 intervals upon waking (wake, 30 min, 45 min, and 60 min after waking), …

Training Set Augmentation And Harmonization Enables Radiomic Models To Detect Early Onset Of Lung Cancer, Claire Huchthausen, Menglin Shi, Gabriel L.A. Sousa, James Larner, Einsley Janowski, Jonathan Colen, Krishni Wijesooriya

Data Science Faculty Publications

Radiomics-based machine learning models have the potential to detect lung cancer at inception from CT scans and transform patient outcomes. Low malignancy rates in early-development pulmonary nodules (PNs) and variable image acquisition hinder development of clinically applicable radiomics-based early detection models. To address these challenges, we augmented training using later-development PNs and harmonized for acquisition effects. We first trained machine learning models to predict PN malignancy using radiomic features from scans of early-development benign and malignant PNs (n = 187) harmonized using ComBat. Observing near-chance performance, we augmented training with later-development benign and malignant PNs (n = 225). We evaluated …

Population Genetics Of Shallow And Mesophotic Corals And Sponges In The Gulf Of Mexico And Florida, Ryan J. Eckert

Electronic Theses and Dissertations

Population genetic analyses provide critical insights into biodiversity and resilience on coral reefs. This dissertation investigated the genetic connectivity and cryptic diversity of multiple foundational reef species, the corals Stephanocoenia intersepta, Orbicella faveolata, Montastraea cavernosa, and the sponge Xestospongia muta, across shallow and mesophotic reefs in the Flower Garden Banks National Marine Sanctuary (FGBNMS) and across marine protected areas on the Florida Reef Tract. Using a reduced representation genotyping approach, 2bRAD-seq, we generated genome-wide single nucleotide polymorphism (SNP) datasets for each species to assess patterns of population structure across regions and depth zones. Analyses uncovered cryptic lineages …

Institutional Learning And International Student Enrollment: A Case Study Of Perceptions Of Practice, Debra Szabo

Electronic Theses and Dissertations

This dissertation examines the application of Peter Senge’s Learning Organization Theory at Florida Atlantic University (FAU), focusing on administrators' perceptions of institutional learning amid increasing international student enrollment. Higher education institutions must balance market-driven behaviors with collaborative learning environments as they navigate a competitive global landscape.

The study stresses the need to investigate institutional learning outcomes and the impact of rising international student enrollment on university policies, procedures, and organizational learning. It explores the relationship between espoused theories, strategic goals designated by FAU, and theories-in-action, which reflect actual practices in recruiting and supporting international students. By integrating Argyris and Schön's …

The Administrative State's Second Face, Emily R. Chertoff, Jessica Bulman-Pozen

Georgetown Law Faculty Publications and Other Works

We often assume that there is one administrative state, with one body of administrative law that governs it. In fact, the administrative state has two distinct faces: one turned toward regulation and benefits distribution, and one turned toward physical force and surveillance. The two faces are growing further apart under the Roberts Court, which has hemmed in the first face with decisions like Loper Bright while showing solicitude for national security and law enforcement agencies.

This Article delineates the two faces of the administrative state. It provides a descriptive account of the second face and the distinctive administrative law that …

Promoting Public Health And Public Safety By Ending The Exclusion Of Incarcerated Children From Access To Medicaid, Eduardo R. Ferrer

Georgetown Law Faculty Publications and Other Works

This essay is a response to Professor Den Houter's article entitled Children are Not Inmates in which she effectively calls eliminating the exclusion of indigent incarcerated children from Medicaid coverage pursuant to the Medicaid Inmate Exclusion Policy (MIEP). This essay affirms and builds upon Professor Den Houter's recommendation. Part I of this response provides additional support for why ensuring system-involved youth receive timely, uninterrupted, high-quality behavioral health services is critical to improving both public health and public safety. Part II analyzes the benefits and risks attendant to excluding indigent incarcerated children from the MIEP. Part III proposes the implementation of …

Mental And Physical Health, Impulse Control, And Intimate Partner Violence Within A Veteran Sample, Hannah L. Grigorian, Helen P. Hailes, Kathleen Palm Reed, Erin D. Reilly

Psychology

Introduction: Psychiatric (e.g., PTSD, alcohol use disorder) and physical issues (e.g., chronic pain, sleep problems) are robustly associated with the use of intimate partner violence (IPV). These chronic conditions can amplify the likelihood of IPV use by increasing perceived threat, poor relationship quality, and negative affect while simultaneously decreasing the ability to inhibit violent behavior. However, the research in this area has largely been examined in limited samples or by examining a single chronic condition above diagnostic cut-offs or specific dual diagnosis (e.g., PTSD and alcohol use disorder). Further, potential mechanisms of action such as impulse control difficulties are rarely …

“I Didn’T Think Many Teachers Cared:” Using Youth Participatory Action Research With Middle Schoolers To Advance Trauma-Informed Practice In Schools, Jesse Chanin, Stacy Overstreet, Allisyn Swift, Samantha Francois

Psychology

Student voice has been largely absent in the trauma-informed schools movement. Student perspectives on trauma-informed approaches are particularly critical for students who identify as Black and Hispanic. Black and Hispanic students consistently report more negative school experiences than their white peers, including negative school climate and lower levels of school equity and personal belonging. This article describes a youth participatory action research (YPAR) program with 18 Black and Hispanic middle school students. We describe how YPAR was integrated with trauma-informed principles to engage student voice. We outline student-led research projects and results related to core features of trauma-informed schools. Finally, …

Tiny-Physics: A Compact Large Language Model For Physics Word Problems On Mobile Devices, Akhil Vallala

Electronic Theses and Dissertations

This thesis offers Tiny-Physics, a compact large language model optimized for solving physics word problems on mobile devices. While Small Language Models (SLMs) offer potential for on-device learning, there is a lack of domain-specialized models for physics. This research fine-tunes smolLM2-360M, a state-of-the-art SLM, using a combination of publicly available datasets (e.g., camel-ai/physics) and a novel synthetic dataset generated through a multi-agent system based on GPT-4o and 1000 Solved Problems in Classical Physics.

The fine-tuning process incorporates both supervised and instruction-tuning methods, including LoRA for parameter-efficient training. The resulting model is converted to GGUF format for deployment on resource-constrained mobile …

Dynamic Quantile Positioning: A Visual Approach To Financial Ratio Benchmarking Against Industry Peers, Wojciech Kuryłek

Studia i Materiały Wydział Zarządzania Uniwersytet Warszawski

Purpose: This paper introduces an innovative visualization method for financial ratio benchmarking that enables comprehensive evaluation of a company’s financial performance relative to industry peers, addressing the challenge of information overload in financial analysis.

Design/methodology/approach: The method analyses data from nearly 200,000 Polish companies classified by PKD codes (aligned with NACE Rev. 2). It evaluates 14 financial ratios across five categories: sales characteristics, profitability, financial leverage, liquidity, and working capital. Each ratio is mapped against industry distributions divided into five quantiles ranging from ‘far below average’ to ‘far above average’. The visualization displays current and previous year positions …

The Csr Authenticity Crossroads: A Comparative Analysis Of Greenwashing In The Cosmetics And Food Sectors, Magdalena Klimczuk-Kochańska

Studia i Materiały Wydział Zarządzania Uniwersytet Warszawski

Purpose: The article aims to investigate the relationship between Corporate Social Responsibility (CSR) strategies, manifestations of greenwashing, and their underlying motivations in selected companies from the cosmetics and food sectors.

Methodology: The study employs a qualitative, comparative case study methodology. Six companies (L’Oréal, Natura & Co., Bielenda, Nestlé, Maspex, and Tony’s Chocolonely) were analysed based on publicly available secondary data, including corporate reports, NGO analyses, and media coverage.

Findings: The study identifies and defines two distinct sectoral logics: companies in the cosmetics sector follow a ‘brand-centric logic’, where greenwashing manifests as product-level marketing claims. In contrast, firms …

Ict Technologies: Origins, Development, And Applications In Selected Examples From The Economy And Society, Tomasz Parys

Studia i Materiały Wydział Zarządzania Uniwersytet Warszawski

Purpose: The primary purpose of this paper is to present information and communication technologies, collectively referred to as ICT, as a determinant of the development and functioning of the modern world through the prism of tools, models, concepts and platforms that enable their application. This is accomplished in the article by presenting selected technologies along with illustrating the scope and possibilities of their use.

Methodology: The scope of the research included ICT technologies, their development and evolution, as well as their application in various fields. Extensive source material was collected, with a primary focus on academic publications, including …

Remote Education And Well-Being In Academia During (Post) Pandemic Times: Insights From Business Schools In V4 Countries, Agnieszka Brzozowska, Jana Kajanová, Michał Ludek, Kamila Matysová, Magdaléna Musilová, Norbert Sipos, Brigitta Szabó-Bálint, Aleksandra Wąsowska, Timea Venczel-Szakó, Jitka Volfová

Studia i Materiały Wydział Zarządzania Uniwersytet Warszawski

Purpose: The study aims to explore the dynamics shaping online education processes in the Visegrad countries (Poland, Czech Republic, Slovakia, and Hungary) during the transition to remote learning.

Design/methodology/approach: A qualitative study was conducted among 40 university students and 40 academic teachers from the four countries. The data analysis focused on identifying recurring patterns and challenges in online teaching and learning experiences.

Findings: The research revealed two negative cycles influencing online education. The first, called the cycle of declining engagement, shows how decreasing student engagement led to lower lecturer involvement, which in turn further reduced students’ motivation. The …

Ghosts Of Bilateralism: Collaborative Research On The Afterlives Of A Finnish-Kenyan Water Development Project, Yonatan N. Gez, Claire Médard, Eunice Kamaara, Eric Masese, Carla Bertin, Nathaniel Chimhete, Berenike Eichhorn, Marie-Aude Fouéré, Hellen Githogori, Ilmari Huotari, Raquel Jerobon, Anna-Riikka Kauppinen, Manya Kagan, Mercy Kosgei, Lena Kroeker, Keren Kuenberg, Anselmo Matusse, Munene Mugambi, Lucy W. Mule, George Mutalemwa, Francis Ngure, Orlando Nipassa, Samuel Owiwa, Stephen Nyagaya, Manuel João Manuel, Elisabeth Schubinger, Ali Umulkher, Esther Wahome

Education and Child Study: Faculty Publications

With rising academic interest in heterodox perspectives on international development interventions, including their unintended consequences and so-called “afterlives” (Rudnyckyj and Schwittay 2014; McKay 2012; Gez 2021), identifying suitable research approaches to capture such complex aftermaths emerges as a new challenge for development studies. In what follows, we share insights from our attempt to adapt an existing research approach to generate evidence on development’s afterlives, including the cascading and unintended effects of past development projects, both tangible and intangible.1 In particular, we explore the valence of qualitative-ethnographic methods for diving deeply into the plurality of projects’ lasting legacies, well beyond …

Factors Associated With Contraceptive Discontinuation Among Women In The U.S., Moradi Aljadani

Electronic Theses and Dissertations

Background: Contraceptive discontinuation is a significant public health concern in the United States, contributing to unintended pregnancies and associated health, social, and economic consequences. Despite the availability of a wide range of contraceptive methods, many women discontinue use prematurely due to a variety of personal, social, cultural, and systemic factors. However, limited research has comprehensively examined these factors at the national level, particularly within a theoretical framework that captures the multidimensional influences on contraceptive decision-making. Objective: This study aimed to assess the factors associated with contraceptive method discontinuation among women in the U.S, guided by Ray’s Theory f …

Sogar: Self-Supervised Spatiotemporal Attention-Based Social Group Activity Recognition, Naga Venkata Sai Raviteja Chappa, Pha Nguyen, Alexander H. Nelson, Han-Seok Seo, Xin Li, Page Daniels Dobbs, Khoa Luu

Electrical Engineering and Computer Science Faculty Publications and Presentations

Social group activity recognition is crucial for various applications including surveillance, human-robot interaction, and behavioral analysis. Current approaches often require extensive manual annotations and rely heavily on pre-trained detectors, limiting their practical applications. Additionally, existing methods struggle to effectively model long-term spatiotemporal relationships in group activities. This paper introduces a novel approach to Social Group Activity Recognition (SoGAR) using Self-supervised Transformers network that can effectively utilize unlabeled video data. To extract spatio-temporal information, we create local and global views with varying frame rates. Our self-supervised objective ensures that features extracted from contrasting views of the same video are consistent across …

Quackery Unmask’D: Defining Quackery In English And American Vernacular Medical Works, C. 1600-1800, Katherine Rose Horan

Electronic Theses and Dissertations

This thesis argues that, from 1600 to 1800, healers in both England and America conceptualized quackery through an evolving understanding of what made a medical practitioner “acceptable.” Through a close examination of vernacular medical print published in both England and America throughout the seventeenth and eighteenth centuries, this thesis complicates earlier understandings of quackery as being disconnected from politics and social biases. Instead, medical authors used social position—specifically gender, race, and religion—and medical philosophy as ways to identify quacks. In England, the Royal College of Physicians used quackery to delegitimize their opponents, while critics of the College did the same. …

Lis1 Depletion In Adult Mouse Projection Neurons Causes Neurodegeneration And Severe Neurological Phenotypes, Anne Ventrone

Theses and Dissertations

Proper LIS1 function is crucial for human brain development, as mutations in LIS1 lead to lissencephaly, a severe neurodevelopmental disorder caused by defective proliferation, differentiation and migration of neural precursors. Our understanding of LIS1's functions after brain development is limited. LIS1 regulates cytoplasmic dynein 1 (dynein), an essential microtubule motor protein in cell division and migration, but also a cellular transport motor. We previously showed that tamoxifen (TX)-induced global knockout of LIS1 using a Cre/Lox system (Act-Lis1iKO) in young adult mice results in severe neurological defects and rapid lethality. This strongly supports LIS1's critical post- developmental role, but the underlying …

Attachment Technique As Orthodontic Aligner Retention Reinforcement: An In Vitro Study, Riandri C. Runizar, Retno Widayati, Miesje K. Purwanegara, Sugeng Supriadi, Giri W. Alam, Galih Taqwatomo

Journal of Dentomaxillofacial Science

No abstract provided.