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A Leslie System For A Demographic Simulation: From An Actuarial Point Of View, David Kings

Electronic Theses and Dissertations

This thesis develops a discrete stochastic linear systems interpretation of age–stage demographic evolution grounded in Leslie operators and realized in a discrete-event simulation implemented with salabim. The central claim is that one annual cycle of the simulation constitutes a cone-preserving, stochastic affine transformation on a high- dimensional population state vector indexed by age, sex, marital status, household type, employment, and education, and that the composition of yearly operators yields a random matrix product whose top Lyapunov exponent is the stochastic counterpart of the Perron–Frobenius growth rate (Caswell, 2001; Tuljapurkar, 1997)[1, 2]. The actuarial bridge is constructed by mapping simulated survival …

Perceptions Of Choral Teachers On The Characteristics Of A Secondary Choral Program, Nathan Dale Rhea

Electronic Theses and Dissertations

The purpose of this study was to examine the perceptions of choral teachers on the characteristics of a successful secondary choral program. The study focused on the main characteristics of excellence, success, and sustainability. The literature showed that there was a significant amount of research on the music curriculum, standards, and various assessment strategies but minimal research on perceptions on the characteristics of excellence, success, and sustainability of a choral music program at the secondary level.

Data collection strategies included individual interviews of eight participants who were choral music educators. The analysis of data occurred through the lens of the …

Isolation, Chemical Characterization, And In-Vitro Cytotoxic Evaluation Of Novel Polar Flavonoids From Chromolaena Leivensis, Matthew Tohatsu Tetteh

Electronic Theses and Dissertations

This study focuses on isolation, chemical characterization, and in-vitro cytotoxic evaluation of novel polar flavonoids from chromolaena leivensis. A 95% ethanolic extract of c. leivensis shipped by Prof. Ruben Torrenegra from University of Applied and Environmental Sciences, Bogota, Colombia, was dissolved in 1:1 methanol/chloroform mixture and its purity analyzed by TLC. The sample was eluted with toluene/methanol in an increasing order of polarity on silica gel, resulting in 49 fractions labelled CLA1 to CLA49. Among these fractions, CLA10 (1) and CLA19 (2) obtained yellow and white crystals. They were analyzed by GCMS, IR, and …

Comparative Value Of Echocardiography Vs. Right Heart Catheterization In Heart Failure With Preserved Ejection Fraction, Nathanael Tran, Mohammad Shaar, Hussein Al-Sudani, Ramy Sedhom, Hamza Akhtar, Kevin Bryan Lo, Gregg S. Pressman

Einstein Health Papers

BACKGROUND: Echocardiography and right heart catheterization (RHC) are useful in the evaluation of heart failure with preserved ejection fraction (HFpEF). We compared the two among decompensated HFpEF patients to determine their relative value in predicting all-cause mortality and a composite of cardiovascular (CV) death and heart failure (HF) readmission at 1 year.

METHODS: One hundred seventy-eight decompensated HFpEF patients who underwent both procedures and survived to hospital discharge were retrospectively identified. Hospital records and the National Death Index were queried to determine outcomes. Echocardiographic and invasive parameters were tested for significant associations with each outcome. Additionally, three predictive models were …

In This Issueclinical Practice Guidelinesreview Articleoriginal Articles

Saudi Medical Journal

No abstract provided.

Interventional Study Of The Iselfie Heart Health Tool For Assessment Of Vital Signs (Heart Rate, Blood Pressure, And Oxygen Saturation) In The Kingdom Of Saudi Arabia, Abdulaziz S. Alhomod, Demah Abdulaziz Almowanes, Robert Scooter Plowman, Azhar Quddus, Hassan Mohamed, Mahmut Karakaya, Ahmed Elgebaly, Jamilah Alrahimi, Raed Alkutshan, Adel Tash

Saudi Medical Journal

ABSTRACT Objectives: To validate the diagnostic performance of the iSelfie Heart Health tool compared to standard-of-care devices, focusing on accuracy, reliability, and classification capabilities. Methods: Vital sign measurements from 579 participants were analyzed using the iSelfie tool in calibrated and non-calibrated modes. Further analyses applied the Association for the Advancement of Medical Instrumentation (AAMI) standards and criteria for cuff-based blood pressure (BP) devices. Primary endpoints included mean absolute error (MAE) and cumulative error percentages for all vital parameters. Binary and multi-class classification analyses evaluated the device’s performance to categorize hypertension grades. Results: In calibrated mode, the iSelfie tool demonstrated high …

Discharge Against Medical Advice Among Pediatric Patients: A Retrospective Study From A Saudi Tertiary Emergency Department, Elaf A. Alshammari, Atheer M. Aljeraibah, Haya M. Aldabas, Saad M. Alqahtani, Raseel S. Alghamdi, Abdulrahman M. Alsharif, Yahya K. Alyahya, Abdullah I. Almojali

Saudi Medical Journal

ABSTRACT Objectives: To investigate the incidence, parental reasons, and predictors of emergency room (ER) revisits following discharge against medical advice (DAMA) in a pediatric center in Saudi Arabia. Methods: This retrospective cohort study was conducted between January 2020 and December 2024 at a tertiary care hospital. Pediatric patients aged 0-14 years who signed the DAMA during ER visits were included. Medical records of patients with DAMA were reviewed to collect demographic data, diagnoses, reasons for DAMA, and outcomes. Results: Among 446,251 ER visits, 2,336 (0.52%, 95% CI: 0.50%–0.55%) involved caregiver-signed DAMA. These rates ranged from 0.45% (2020) to 0.69% (2023). …

Correlation Of Clinical And Laboratory Findings Of Dehydration With Ultrasonographic Measurements, Yusuf Yilmazturk, Abdullah Sadik Girisgin, Mustafa Alpaslan, Necmi Baykan

Saudi Medical Journal

ABSTRACT Objectives: To assess bedside ultrasonographic readings in conjunction with laboratory and clinical results, as well as to look into the efficacy of these measurements while evaluating patients who are being monitored for dehydration and managing their therapy. Methods: We assessed 300 patients, 150 of whom were in the case group and 150 in the control group. Laboratory results throughout therapy, clinical dehydration, vital signs, and bedside ultrasonography results were all documented. A vena cava inferior collapsibility index of 50% or higher, dry oral mucosa, decreased skin turgor, and a fresh onset of altered consciousness were all considered clinical indicators …

Respiratory Distress Syndrome In Late Preterm Infants: Are We Doing Enough To Prevent It?, Adeeb Khawaji

Saudi Medical Journal

No abstract provided.

Launch Of Online Learning Course On Using The Iarc Atlas Of Breast Cancer Early Detection

Saudi Medical Journal

No abstract provided.

Borderplex Business Barometer, Volume 9, Number 12, Thomas M. Fullerton Jr., Steven L. Fullerton

Border Region Modeling Project

No abstract provided.

From 4-H To Higher Education: College Enrollment Among Indiana 4-H Alumni By Demographics, Favour C. Ojike, Casey Mull

Journal of Youth Development

Evaluating the long-term impact of college readiness programs on diverse youth presents unique challenges, particularly as youth navigate the complex and often transient path of postsecondary education. Instrumentation limitations and resource constraints can further blur the positive contributions of such programs. In an inaugural study, Indiana 4-H leveraged the National Student Clearinghouse (NSC) to assess the postsecondary educational journeys of its alumni across diverse demographic groups. Data from the NSC were analyzed using descriptive frequency test, chi-square tests, and correlation analysis. Key findings reveal that Indiana 4-H alumni enroll in postsecondary institutions at significantly higher rates than the state average, …

Full Issue, Volume 20, Issue 4

Journal of Youth Development

No abstract provided.

Sport Participation, Academic Engagement, And Well-Being Among Adolescents Impacted By Parental Incarceration, Sarah Kaja, Amy L. Gower Ph.D., Frederique Corcoran, Ingie Osman, Elizabeth Shaver, Samantha J. Adler, Rebecca Shlafer

Journal of Youth Development

Millions of American adolescents have experienced the developmental consequences associated with parental incarceration. Positive youth development activities, including sports team participation, could buffer some of the risks of parental incarceration. Research on sports involvement among adolescents impacted by parental incarceration is scant and suggests their participation may be limited, though a significant body of research among adolescents in general demonstrates sports team participation is associated with better outcomes. We addressed important gaps in research by 1) estimating the prevalence of sports team participation among adolescents impacted by parental incarceration, 2) examining whether sports team participation differed by socioeconomic status in …

High-School-Age Youth Serving As “Emotion Coaches” For Young Children In The Early Grades: A Feasibility Study Of A Cross-Age Approach To Social And Emotional Learning, Amanda Moreno, Maria Kontoudakis, Whitney Davis-Mcintosh, Anita Evans, Olivia Bobbitt

Journal of Youth Development

While the benefits of cross-age programming within youth have been understood for decades, such programs are rarely employed with curricula specific to social and emotional learning (SEL) or with a wide age range between the two groups of youth. This article describes the findings of a pilot implementation and feasibility study of the Emotion Coaches program, which sought to explore whether the conceptual and pragmatic challenges involved in bringing early childhood students (i.e., preschool to second grade) together with adolescent teachers delivering an SEL curriculum could be overcome. Findings from the pilot evaluation suggested that middle-school-age students are likely too …

Promoting Positive Youth Development Through Mentoring In Alternative Education, Tia S. Andersen

Journal of Youth Development

This Program and Practice article provides a comprehensive overview of a university-school mentoring program specifically designed to address the school-to-prison pipeline by supporting youth in a disciplinary alternative school setting. The purpose of this article is to offer a detailed description of the program’s structure, components, and implementation strategies, with the goal of providing practitioners with a replicable model that can be adapted for use in similar school environments. This program matches undergraduate students with high school youth removed from traditional schools due to behavioral or justice-related challenges. Grounded in a strengths-based framework, the intervention incorporates a structured mentor training …

Coaching Life Skills Through Sport: Program Description And Evaluation, Lori Gano-Overway, Sarah Sackett, Robert J. Harmison, Dorian Hayden

Journal of Youth Development

While life skill development opportunities in sport and the coach’s essential role in facilitating the process have received much support, coaches often report they lack the tools and confidence necessary to integrate life skill development strategies into practice. Additionally, while life skill development focused coach education programming exists, few have been formally documented and systematically evaluated for effectiveness. The present study aimed to describe an accessible (online, free, asynchronous) and evidence- informed course while assessing the program’s fidelity and utility using the utilization-focused evaluation model (Patton & Campbell-Patton, 2021). The developed Coaching Life Skills Through Sport (CLSTS) course covers empirically …

Three Additional Texts From Felix De Andreis, John E. Rybolt C.M.

Vincentian Studies

Three texts add to our knowledge of the work of Felix De Andreis (1778–1820), the founding superior of the Congregation of the Mission in the United States. These have recently come to light. Two are originals, and the third is a copy. They are given in the original languages and in English, with introduction and commentary. The first is an “Indian grammar” with the Lord’s Prayer and catechism by Felix De Andreis, written circa 1817. According to David J. Costa, a scholar in Native American linguistics, it “provide[s] us with the only source of data that is clearly transitional between …

The Reciprocal Relationship Between Physical Activity And Prosocial Behavior Among Rural Left-Behind Children: A Cross-Lagged Mediation Analysis Of Psychological Resilience, Dawu Huang, Xin Xiong, Peiyi Wang, Juan Xu

Psychological Science Faculty Publications

Introduction: Although physical activity benefits youth development, little is known about how it is related to prosocial behavior over time, especially among structurally disadvantaged groups such as rural left-behind children in China. This longitudinal study examined the bidirectional relationship between physical activity and prosocial behavior and the mediating role of psychological resilience.

Methods: A total of 612 children (Grades 5–6; approximately 10–12 years old; 50.5% male) from three schools in Ji’an City, Jiangxi Province, completed measures of physical activity, psychological resilience, and prosocial behavior at three time points over 6 months.

Results: Crosslagged mediation structural equation modeling revealed reciprocal pathways: …

Proceedings Of The 25th International Symposium On Adapted Physical Activity, Catherine Carty, Gerard Masdeu Yelamos

Publications

This volume presents the Proceedings of the 25th International Symposium of Adapted Physical Activity (ISAPA 2025), hosted by Munster Technological University under the Patronage of UNESCO. It is intended as a permanent scholarly record of the symposium, its themes, and its contributions across research, practice, policy, culture, and inclusion in line with CoARA principles.

Sme Cyber Resilience State Of The Sector 2025, Hazel Murray, Gillian O'Carroll, Aoibheann Brangan, Jason Holland, Stephanie Chevanne Wallace, Miriam Curtain, Glenda Deveney

Department of Computer Science Publications

Ireland's small and medium enterprises (SMEs) face a critical cyber resilience gap. SMEs account for 99.8% of all enterprises in Ireland and employ over 2.29 million people, representing 67.9% of total employment (based on the latest CSO 2022 figures). This cyber resilience assessment reveals that the majority of SMEs remain underprepared for modern cyber threats.

‘Boomers’ And ‘Gen Zs’: More Alike Than You’D Think, Michelle C. Dziurgot

The Journal of the Michigan Dental Association

This month's editorial compares Baby Boomer (born 1946–1964) and Generation Z (born 1997–2012) members of the MDA, highlighting unexpected similarities. Both generations share a strong dedication to hard work, social justice, and pride in MDA membership. They also both experienced economic downturns (Boomers: 70s/early 80s recessions; Gen Z: 2008-09 Great Recession), leading them to be cautious with savings. Although communication methods differ (Boomers prefer phone calls, Gen Z prefers texting), both desire concise conversations. They also share traditional goals like marriage, family, and a strong desire for financial security and home ownership.

Mda At Your Service: A Deaf Person Wants To Become My Patient, Rachel Sinacola Dds, Ms

The Journal of the Michigan Dental Association

The column clarifies that under the Americans with Disabilities Act (ADA), dental offices must provide auxiliary aids or services for patients with hearing impairments, which may require a professional interpreter paid for by the dentist in complex visits. Members are encouraged to notify the MDA about practice/life changes (e.g., address changes or caseload shifts) to ensure proper benefits and dues discounts. New associates are strongly urged to utilize the MDA resource for contract review, which offers a 10% discount with Kerr Russell Attorneys. Additionally, the MDA Store provides free Labor Poster Packets, fulfilling state and federal employer requirements.

The New Professional: The Legacy Of Women In Dentistry, And Your Place In It, Amrita Patel Dds

The Journal of the Michigan Dental Association

Women now constitute over half of dental graduates, transforming the profession’s culture and leadership. While women hold a majority of seats on the MDA Board of Trustees, wage disparities, underrepresentation in certain specialties, and work-life balance pressures remain challenges. The author emphasizes that the legacy of women in dentistry is an active, evolving force. New professionals have the opportunity and responsibility to advance this legacy by engaging in mentorship, advocating for fair workplace policies, pursuing ownership, and serving as role models. This ensures the profession is defined by opportunities rather than barriers.

Staff Matters: How To Get Creative With Staff Benefit Offerings, Jodi Schafer Sphr, Shrm-Scp

The Journal of the Michigan Dental Association

Small practices must be intentional and creative with benefits to distinguish themselves in the competitive labor market. Strategies include offering Individual Coverage Health Reimbursement Arrangements (HRAs) or covering dental/vision care. Work-life balance benefits are highly valued, such as flexible scheduling, additional paid time off beyond the state-mandated Earned Sick Time Act, or time off for birthdays. Practices should consider financial wellness options like retirement savings plans or student loan repayment assistance. Professional development, like covering certifications and offering mentorship, is crucial. Using platforms like TASC or Fringe to provide flexible "lifestyle" benefits allows employees to choose perks that matter most …

Mda Insurance: Offer Group Health Insurance To Entice Recruits, Retain Valuable Staff, Craig Start

The Journal of the Michigan Dental Association

Amidst a competitive labor market, offering group health insurance is critical for attracting and retaining qualified dental staff, as it is the most highly valued employee benefit. Dentists can establish an employment policy stipulating cost-sharing for premiums, rather than paying the entire cost. The MDA strongly encourages investigating the exclusive MDA Health Plan, which offers 11 distinct plan designs powered by Priority Health. For 2026, the MDA Health Plan is increasing rates by only 4%, significantly lower than commercial group plans requesting double-digit increases (10% to 18%). Plans can be started at any time during the year, requiring about 30 …

Back Page: 9th District Delegation Attends Ada House Of Delegates, Michelle M. Nichols-Cruz

The Journal of the Michigan Dental Association

The ADA 9th District delegation, representing Michigan and Wisconsin, attended the ADA House of Delegates meeting in Washington, D.C., in October, which coincided with the ADA SmileCon event. During the meeting, Dr. Deb Peters, former MDA president and MDA House Speaker, was elected Speaker of the ADA House. This historic election makes Dr. Peters the first female ADA speaker. Dr. Michele Tulak-Gorecki, outgoing 9th District ADA trustee, was unsuccessful in her bid for ADA president-elect. The next ADA House meeting is scheduled for October 10-13, 2026, in Indianapolis, Indiana.

Impact In Action: Your Michigan Dental Association Foundation, Anne Berquist

The Journal of the Michigan Dental Association

The Michigan Dental Association (MDA) Foundation, a 501(c)3 non-profit, works to promote better dental health and support the future dental workforce through educational scholarships. The Foundation’s impact is increasing yearly, evidenced by a 42% increase in scholarship awards in 2024, providing $44,000 to 15 recipients. It also provides grants to statewide organizations delivering dental care to uninsured, impoverished, and underserved populations, awarding $141,500 in 2025. A high-profile program is the biannual Michigan Mission of Mercy (MOM), which provided over $1.1 million in donated care in Flint in 2024. Support is generated through various fundraisers, including the Year-End Fundraising Campaign.

The Case For Credentialing Dental Assistants, Michelle Godofsky

The Journal of the Michigan Dental Association

Credentialing dental assistants is presented as a method to enhance productivity and address workforce shortages; currently, only about 15% of Michigan dental assistants are Registered Dental Assistants (RDAs). A case study at Thunder Bay Community Health Service, an FQHC in Northern Michigan, illustrates success, where RDAs perform expanded functions—like placing restorations and monitoring nitrous oxide—boosting clinic productivity by 16%. The clinic supports its dental assistants by covering education and exam expenses and providing study time during work hours. This investment improves job satisfaction, confidence, morale, and patient communication among staff, strengthening employee retention.

Here’S What’S New — Coming To The 2026 Mda Annual Session, Andrea Sunderman, David Foe

The Journal of the Michigan Dental Association

The 2026 MDA Annual Session, held April 30 – May 2 at DeVos Place in Grand Rapids, will feature significant improvements. The major change eliminates cumbersome a la carte pricing for courses. Instead, attendees can purchase a one-day pass or a full conference package, granting access to any course without advance sign-up. The schedule is shortened to two-and-a-half days. Passes include a hot lunch in the Exhibit Hall on Thursday and Friday, and courses are streamlined to allow more time for vendor visits and socializing. The event will also feature three keynote addresses and a new Friday night social event, …