Digital Commons Network^™

Reflections On Light: Exploring Geometrical Optics With Precalculus Tools, Dr. Anderson Trimm

Professional Learning Day

In this session, the presenter will discuss the mathematical modeling of reflection and refraction of light as an engaging and accessible application of several concepts from precalculus. By presenting this topic with a greater emphasis on the underlying mathematics, students of physical science can make deeper connections with their mathematics coursework. The presenter will share a lesson appropriate for Algebra 2 or precalculus that integrates Desmos and PhET simulations and discuss differentiation opportunities. Attendees should bring a laptop to access the simulations.

Computation Of The Unreliable Mx/M/1 Model For Multiple Working Vacations Queuing System With Encouraged Arrivals, Sujipriya. A, K Julia Rose Mary

Baghdad Science Journal

This research analyzed queuing system with encouraged arrivals under multiple working vacations and server breakdowns. It is based on a M^x/M/1 model, where the customers arrive in batches or bulk. In addition, the arrival follows a Poisson process and the service time is distributed exponentially. Moreover, in this queuing system, breakdowns can occur at any time, and it is affecting the server's service time. The repair time is independent. Server resume the service as soon as returns from the service facility. Repair time follows exponential distribution. Encouraged arrival in queuing models involves external factors or incentives that prompt …

Enhancing Cold Cases Forensic Identification With Dcgan-Based Personal Image Reconstruction, Hasan Sabah K. Al-Muttairi, Sefer Kurnaz, Abbas Fadhil Aljuboori

Baghdad Science Journal

With the improvement of artificial intelligence and deep learning techniques, especially deep convolutional generative adversarial network (DCGAN), there has been a significant development in personal identity and generating images through facial reconstruction systems. This study focuses on proposing a model of personal image reconstruction from forensic sketches using DCGAN. The model comprises two networks: a generator to convert sketch images into real images and a feature network to determine the similarity of the generated images to real ones. Forensic sketches provided by relevant authorities are used as inputs to the proposed model. These sketches include details and information on the …

Comparing Pca-Based Machine Learning Algorithms For Covid-19 Classification Using Chest X-Ray Images, Hussein Ahmed Ali, Walid Hariri, Nadia Smaoui Zghal, Dalenda Ben Aissa

Baghdad Science Journal

The rapid spread of the COVID-19 pandemic has strained global healthcare systems, necessitating efficient diagnostic methods. While Polymerase Chain Reaction (PCR) and antigen tests are common, they have limitations in speed and precision. Enhancing the accuracy of imaging techniques, especially Chest X-rays (CXR) and Computerized Tomography (CT) scans, is crucial for detecting COVID-19-related lung abnormalities. CXR, being cost-effective and accessible, is preferred over CT scans, but accurate diagnosis often requires technological support. To address this, an extensive dataset of CXR images categorized into five classes is available on Kaggle. Processing such data involves steps like grayscale conversion, image intensity adjustment, …

Enhancing Student Performance Evaluation Through Optimized Fuzzy Rule Techniques, Mohammed Khaleel Hussein, Ali Abdullah Ali, Mohammed Ahmed Subhi, Saleh Mahdi Mohammed

Baghdad Science Journal

The process of performance monitoring in e-learning platforms is one of the emerging techniques that enable educators to assess and improve the educational outcomes of the students. This is typically accompanied by few challenges that need to be addressed, including data privacy and security, maintaining data quality and availability, scaling performance monitoring for large numbers of learners, handling the heterogeneity of data, ensuring interpretability and explainability, considering contextual factors, addressing ethical considerations, and establishing robust technological infrastructure. Many methods and techniques are considered to resolve these issues, including the implementation of strong data privacy protection measures, applying data validation and …

Outcome For The Case (11,10; 1), Waleed Khalid Jaber, Niran Sabah Jasim

Baghdad Science Journal

Through this work R is a commutative ring with 1, ℱ is a free R-module and 𝒟_𝒾 is the divided power algebra of degree 𝒾. A partition of length ℓ(λ) = n is a sequence ( λ ) = (λ₁, λ₂, …, λ_n) of non-negative integers in non-increasing order λ_1≥λ₂ ≥ … ≥ λn > 0. The weight of a partition λ is |λ| =λ ₁ + λ₂ + … + λ_n. A relative sequence is a pair ( λ,μ ) of sequences such that μ ≤ …

On (J - Δ) Semi Homogeneous Systems Of Differential Equations, Aya H. Hasan, Bassam Jabbar Al-Asadi

Baghdad Science Journal

The concept of homogeneity in differential equations can be generalized to systems of differential equations as shown in this work. The classification of three-dimensional differential equation systems is presented based on the definition of the Jacobean matrix and its determinant, where two systems of the homogeneous system are defined, called the J-semi-homogeneous system and the other δ-semi-homogeneous system, where the first definition is based on the Jacobian matrix, while the second is based on the determinant of the Jacobite matrix. Examples are given for both definitions, and the relationship between the two definitions will be studied. In addition to finding …

Analysis Of Prey, Predator And Top Predator Model Involving Various Functional Responses, Divya B., K. Kavitha

Baghdad Science Journal

This research proposes a mathematical model to investigate the dynamical behavior of the system of three species, namely prey, predator and top predator. The feeding behavior of each predator serves as a functional response. The interaction between the species is carried out by a functional response. Crowley Martin functional response is incorporated between prey and predator while Holling type III functional response occurs between predator and top predator. The existence of positivity and boundedness of the system have been examined. The equilibrium points of the system are determined. The system has been linearized by applying the Jacobian matrix. The main …

New Approximating Results By Weak Convergence Of Forked Sequences, Bareq Baqi Salman, Salwa Salman Abed

Baghdad Science Journal

The modular function spaces are natural generalization of spaces like Lebesgue space, Orlicz space, Lorentz p-space, Orlicz--Lorentz space, Musielak--Orlicz space, et al. The function modulars lack basic and flexible properties that norm functions have, as they are functional lacks homogeneity and subadditivity and, therefore, it might be surprising to use techniques involving asymptotic centers, normal structure and uniform convexity to obtain fixed point theorems. The purpose of this paper is to give a new accelerated iterative algorithm for multi valued\single valued mappings in modular function spaces and to prove some results about their convergence (strong or weak) to a fixed …

Hopf And Zero-Hopf Bifurcation Of The Four-Dimensional Lotka-Volterra Systems, Sirwan A. Mustafa, Niazy H. Hussen

Baghdad Science Journal

In this work, the four-dimensional Lotka-Volterra model (4DLV) involving four species in a constant environment is considered. The objective of this investigation is to study the local bifurcations occurring in the system. This system has at most sixteen possible equilibrium points. One of the equilibrium points is considered in order to investigate the periodic solutions that bifurcate from the Hopf and the zero-Hopf equilibrium points, respectively. It has been proven that, five families of sufficient conditions exist on the parameters of the system in which the Jacobian matrix at equilibrium point has a pair of purely imaginary ± iω …

Predation Of The Scorpion Hottentotta Saulcyi (Scorpiones: Buthidae) By The Long-Eared Hedgehog (Hemiechinus Auritus) (Mammalia: Eulipotyphla: Erinaceidae) In Şırnak Province, Türkiye, Rıdvan Kurt, Ersen A. Yağmur, Tarkan Yorulmaz

Euscorpius

In this study, we report the predation of Hottentotta saulcyi (Simon, 1880) by the insectivorous mammal Hemiechinus auritus (Gmelin, 1770) in Şırnak Province, southeastern Türkiye. During a nighttime field trip, we observed a long-eared hedgehog biting a H. saulcyi individual on its prosoma. This observation confirms that long-eared hedgehogs feed on and prey upon scorpions.

Fluorescence Lifetime Imaging Ophthalmoscopy (Flio): A Novel Retinal Metabolic Biomarker For Multiple Sclerosis, Daniel Markowitz, Kylee Shivok, Elizabeth Affel, Ms, Jose S. Pulido, Md, Ms, Mba, Mph, Thomas P. Leist, Md, Phd, Gyorgy Hajnoczky, Md, Phd, Mahdi Alizadeh, Phd, Robert Sergott, Md

Farber Institute for Neuroscience Staff Papers and Presentations

Introduction

- Fluorescence lifetime imaging ophthalmoscopy (FLIO, Heidelberg Engineering, Figures 1 and 2), a novel in vivo retinal imaging biomarker, generates fluorescence decay lifetimes in 2 spectral channels corresponding to the following metabolic processes:

- Short Spectral Channel (SSC): 498 – 560 nm

• Corresponds to macular pigment, flavin adenine dinucleotide (FAD) and oxidative phosphorylation.

- Long Spectral Channel (LSC): 560 – 720nm

• Corresponds to predominantly lipofuscin and lysosomal function

- Based upon animal experimental models and clinical data, mitochondrial dysfunction has a role in the pathophysiology of both inflammatory and degenerative components of Multiple Sclerosis

The Student Movement Volume 109 Issue 16: New Months, New Movies, New Celebrations, Esther Martin, Ember Clark, Melanie Webb, Corinna Bevier, Nate Miller, Reagan Mccain, Andrew Francis, Melissa Moore, Natalie Reid, Amelia Stefanescu

The Student Movement V. 109 (2024-2025)

HUMANS

The Unity of Deliverance Mass Choir, Esther Martin

ARTS & ENTERTAINMENT

Save Your Time and Don't Watch "Captain America: Brave New World", Ember Clark

Celebrating Cinema's Indie Spirit, Melanie Webb

We Watched Every 2024 Best Picture Nominee (So You Don't Have To), Corinna Bevier and Nate Miller

My Life As a Student Radio Announcer (the Coolest Job on Campus), Reagan McCain

NEWS

Elegance and Beauty on Display at BSCF's Jazzy Soiree, Andrew Francis

2nd Annual Andrews University Indoor Triathlon, Melissa Moore

IDEAS

Are We Dying for Food Dyes?, Natalie Reid

PULSE

Volunteering Opportunities In the Berrien Area, Amelia Stefanescu …

The Bison, February, 28, 2025

The Bison Newspapers

No abstract provided.

A New Way For Justice For Families Of Schoolchildren With Disabilities? A Case Note On Luna Perez V. Sturgis Public Schools, Kevin R. Hart

New Mexico Law Review

For years, the majority of courts have ruled that parents of children with disabilities were required to exhaust special education due process procedures before filing civil actions under other disability statutes. Change would come through Luna Perez v. Sturgis Public Schools. In Luna Perez, a deaf student, Miguel Luna Perez, was denied a free and appropriate education for eleven years. After settling the case under the Individuals with Disabilities Education Act (IDEA), Mr. Luna Perez (initially through his mother, but later continuing on his own) filed a claim for compensatory damages under the Americans with Disabilities Act (ADA) and Section …

Volume Cxliv, Number 15, February 28, 2025, Lawrence University

The Lawrentian

No abstract provided.

Fructose Induces Inflammatory Activation In Macrophages And Microglia Through The Nutrient-Sensing Ghrelin Receptor, Zheng Shen, Zeyu Liu, Hongying Wang, Danilo Landrock, Ji Yeon Noh, Qun Sophia Zang, Chih-Hao Lee, Yuhua Z Farnell, Zheng Chen, Yuxiang Sun

Faculty, Staff and Student Publications

High fructose corn syrup (HFCS) is a commonly used sweetener in soft drinks and processed foods, and HFCS exacerbates inflammation when consumed in excess. Fructose, a primary component of HFCS; however, it is unclear whether fructose directly activates inflammatory signaling. Growth hormone secretagogue receptor (GHSR) is a receptor of the nutrient‐sensing hormone ghrelin. We previously reported that GHSR ablation mitigates HFCS‐induced inflammation in adipose tissue and liver, shifting macrophages toward an anti‐inflammatory spectrum. Since inflammation is primarily governed by innate immune cells, such as macrophages in the peripheral tissues and microglia in the brain, this study aims to investigate whether …

The Spread Of Tuberculosis Cases In The Highlands And Coastal Areas Of Padang, Rapitos Sidiq, Indang Dewata, Heldi Heldi, Nurhasan Syah, Linda Handayuni, Al Asyary

Kesmas

The current tuberculosis (TB) worldwide situation is very concerning in terms of the number of cases and the death toll, as well as the environmental factors that contribute to its transmission. This has driven policy decisions that aim to enhance contemporary TB control efforts. This study aimed to map the pattern of TB spread based on geographic location, particularly in the highland and coastal areas of Padang City, West Sumatra Province, Indonesia. This study employed a quantitative descriptive analysis using secondary data from 6 primary health care (PHC) from April 2022 to March 2023, comprising 896 cases. Data analysis was …

Exploring Physician Well-Being: A Bibliometric Analysis Of Mental Health, Suriya Kumareswaran, Bala Murali Sundram, Vanitha Thurairasu

Kesmas

This bibliometric study examined the evolving research landscape on physician mental health from 2010 to 2023, analyzing key themes, publication trends, and global contributions. A total of 3,360 articles, including 3,137 original research and 223 reviews, were sourced from Web of Science and Scopus. Findings revealed a significant increase in research output, particularly during the COVID-19 pandemic, with burnout, depression, and anxiety emerging as dominant themes. The US accounted for most publications, while research from low- and middle-income countries remains limited, indicating a substantial global disparity. Thematic analysis highlighted variations in burnout assessment methodologies, underscoring the need for standardized evaluation …

Help-Seeking Behavior And Related Mental Health Promotion Programs In Southeast Asian Youth: A Systematic Literature Review, Gladys Octavia, James A. Doorbar, Kallista Chan

Kesmas

Mental health issues are a prominent burden among adolescents and young adults in Southeast Asia, compounded by reluctance to seek help and low treatment rates. This mixed-method systematic review analyzed help-seeking profiles (preference, facilitators, and barriers) and evaluated implemented help-seeking programs. Data were sourced from electronic databases, hand-searched local databases, conference proceedings, and grey literature. Study selection followed PRISMA 2020 guidelines, focusing on 1) adolescents (10–19 years) and young adults (18–26 years) in Southeast Asia who were not receiving mental health care, 2) assessing help-seeking behavior, and 3) evaluating programs to increase help-seeking. A total of 16 articles were identified. …

Myelin-Reactive Cd8+ T Cells Influence Conventional Dendritic Cell Subsets Towards A Mature And Regulatory Phenotype In Experimental Autoimmune Encephalomyelitis, Mohit Upadhye, Connor R Wilhelm, Kai J Rogers, Chakrapani Vemulawada, Nicholas Borcherding, Alexander W Boyden, Kevin L Legge, Nitin J Karandikar

2020-Current year OA Pubs

Multiple sclerosis (MS), an autoimmune demyelinating disease of the central nervous system, is modeled in mice as experimental autoimmune encephalomyelitis (EAE). While CD4

Norovirus Co-Opts Ninj1 For Selective Protein Secretion, Jaewon Song, Wandy L Beatty, Anthony Orvedahl, Et Al.

2020-Current year OA Pubs

Plasma membrane rupture by Ninjurin-1 (NINJ1) executes programmed cell death, releasing large cellular damage-associated molecular patterns (DAMPs). However, the regulation and selectivity of NINJ1-mediated DAMP release remain unexplored. Here, we uncover that murine norovirus (MNoV) strategically co-opts NINJ1 to selectively release the intracellular viral protein NS1, while NINJ1-mediated plasma membrane rupture simultaneously bulk-releases various cellular DAMPs. Host caspase-3 cleaves the precursor NS1/2, leading to NS1 secretion via an unconventional pathway. An unbiased CRISPR screen identifies NINJ1 as an essential factor for NS1 secretion. During infection, NINJ1 is recruited to the viral replication site, where it oligomerizes and forms speckled bodies, …

Marketing Strategies To Engage Multicultural Consumers, Nazanin Weck

Walden Dissertations and Doctoral Studies

The lack of marketing strategies that engages multicultural consumers is a concern for marketing managers because it can adversely impact their business profitability and sustained market competitiveness. Grounded in identity management theory (IMT), this qualitative pragmatic inquiry was conducted to explore the marketing strategies that successful marketing managers use to engage multicultural consumers. The participants were six marketing managers from distinct companies in the southeastern United States who specialize in acquiring and engaging multicultural customers. Data were collected through semistructured interviews, analysis of public company documents, and a systematic review of secondary sources, including social media content and corporate websites. …

Development Of Interactive Hologram-Based Learning Media For Physical Education Sports And Health Subjects In Elementary School, Saeldho We Lastya, Didik Rilastiyo Budi, Rifqi Festiawan, Kusnandar Kusnandar, Erwin O. Estrella, Mohammad Ashraf Khan

Indonesian Journal of Research in Physical Education, Sport, and Health

Background: Physical education sports and health material sports games still use conventional methods by relying on books and other tools. Technology-based interactive media has yet to be applied to interactive learning. Objective: This study aims to produce hologram-based interactive learning media that effectively increase student knowledge. Methods: This study used the Research and Development (RnD) method. This study used a sample of 5th-grade students from State Elementary School 1 Tinggarwangi 26 students, State Elementary School 3 Jambu 16 students, and State Elementary School 1 Banteran 20 students. Research instruments for media use validation questionnaires and student and teacher assessments. Cognitive …

A Qualitative Look At The Impact Of Animal-Assisted Therapy On The Lived Experiences Of Recovery Home Residents With Co-Occurring Substance Use And Mental Health Disorders, Philip M. Papoojian

Doctoral Dissertations and Projects

Animal-assisted therapy (AAT) is a commonly used intervention strategy for addressing psychiatric disorders comorbid with substance use in Europe but is a rarely used intervention in North America. As substance abuse continues to rise in contemporary Western culture, particularly in the United States, new interventions, including AAT, need to be considered. Cannabis abuse and opioid abuse are often comorbid with other psychiatric disorders such as alcoholism, general anxiety disorder, depression, bipolar disorder, schizophrenia, and PTSD. The combination of these factors can stunt developmental processes. This study was designed as a qualitative exploration of the lived experiences of male substance users …

Exploring Mental Health, Future Rehabilitation, And Systemic Oppression In Inmates: A Qualitative Study, Vennissica F. Kelly

Doctoral Dissertations and Projects

The purpose of this study was to examine the experiences of systemic oppression in incarcerated inmates, with a focus on their emotional/psychological experience of systemic oppression and how it impacted their willingness to participate in rehabilitation programs. This phenomenological study used elements of the narrative approach to obtain the common themes that surfaced while communicating with the participants and focused on two areas: systemic oppression and how it affected the mental health of inmates and how it affected their willingness to participate in rehabilitation programs. For this purpose, systemic oppression was defined as systemic power used to control others. To …

The Effects Of Fact-Checking Misinformation About U.S. Politics On Tiktok Through The Lens Of Two-Step Flow Theory: A Quantitative Content Analysis, Toi Travis Thornton

Doctoral Dissertations and Projects

The social media platform, TikTok, has grown tremendously over the past few years. With the freedom that users have to communicate in the way they desire to and with any information they want to communicate, the spread of misinformation has continued to spread on the application. This has called for a need for reputable fact-checking organizations to correct the misinformation with truth. This research paper examines the effects of fact-checking on TikTok videos containing misinformation about American politics. It addresses the research problem which is that misinformation spread on TikTok has confused users about American politics, which in turn could …

Celtic Pagan Influence In The Early Irish Church: The Conversion Of Ulster, Cassidy M. Mcnally

Doctoral Dissertations and Projects

This dissertation explores the influence of Celtic Pagan traditions on the early Irish Church in Ulster, from the introduction of Christianity in the late fourth century to the Viking invasions of the twelfth century. By integrating historical texts, archaeological findings, and comparative religious studies, it investigates how pre-Christian beliefs and rituals were assimilated into early Christian practices. The study begins by examining the arrival of Christianity in Ulster, highlighting how Celtic Paganism, characterized by its pantheon, nature worship, and druidic traditions, shaped the Christian framework. It delves into how early Christian leaders, such St. Patrick and St. Brigid, navigated these …

The Differences In Perceived Stress And Coping For Prelicensure Nursing Students After A Positive Reappraisal Coping Intervention, Deanna Lynne Walborn

Doctoral Dissertations and Projects

Academic stress has become a common problem among nursing students, which can lead to undesirable student outcomes if their stress goes unabated. The purpose of this quasi-experimental pretest/posttest study is to determine if an intervention using a positive reappraisal coping intervention (PRCI) can reduce student nurse stress. Knowles’ theory of adult learning along with Lazarus and Folkman’s transactional model of stress and coping (TMSC) provided a foundation for the study. Olejnik’s (1984) table was used to determine the minimal total sample size required for this research. A sample of 26 nursing students from those who are enrolled in a public …

A Quantitative Study: The Association Between College Selection Methodology And Sense Of Belongingness Among First-Year, Full-Time Residential College Students, Tamara Reese

Doctoral Dissertations and Projects

College selection methodology can be traced back to the 1920s when colleges had to rely on their to travel through word of mouth, catalogs, pictures, and brochures. Although virtual tours can be dated back to 1994, COVID-19 catapulted the popularity of traveling through virtual reality. While many studies have sought to measure the impact of visitation on student enrollment propensities, none have made a noteworthy effort to account for a potential endogenous link between the student's college choice methodology and a student's sense of belongingness at their college or university campus. The purpose of this quantitative quasi-experimental study is to …