Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 43921 - 43950 of 5203971

Full-Text Articles in Entire DC Network

Adaptive Two-Derivative Runge–Kutta–Nyström Method With Trigonometric Fitting Approach, Nur Nabila Huda, Khai Chien Lee, Nurul Huda Abdul Aziz May 2026

Adaptive Two-Derivative Runge–Kutta–Nyström Method With Trigonometric Fitting Approach, Nur Nabila Huda, Khai Chien Lee, Nurul Huda Abdul Aziz

Turkish Journal of Mathematics

A fifth-order trigonometrically-fitted explicit two-derivative Runge–Kutta–Nyström method with an adaptive step size strategy, denoted as ATFRKN5, is proposed for efficiently solving second-order ordinary differential equations of the form u″(x) = f(x, u(x)) that exhibit oscillatory behavior. The order conditions of the method are derived using Taylor series expansion, enabling the construction of two-derivative Runge–Kutta–Nyström schemes up to orders four and five. Trigonometric fitting is applied by incorporating the basis functions eiλx and e−iλx, λ ∈ ℝ, allowing the method to adapt naturally to problems with dominant frequencies. …

Go to article

On Sequences Arising From The Action Of Modular Group, Tuncay Köroğlu, Bahadir Özgür Güler May 2026

On Sequences Arising From The Action Of Modular Group, Tuncay Köroğlu, Bahadir Özgür Güler

Turkish Journal of Mathematics

This paper examines the sequences produced by the natural action of specific elements of the modular group on extended rational numbers. The polynomial sequences Pr(c) and Qr(c) are derived from the orbit of the point at infinity under a specific modular transformation. These sequences satisfy linear recurrence relations, which are analyzed using generating functions. The polynomials encode k-Fibonacci numbers, and studying their behavior modulo a fixed integer m reveals notable arithmetic and combinatorial properties. We also explore the connection between these modular actions and Farey graphs, illustrating the hyperbolic transformations as nested geodesic paths in the upper half-plane.

Go to article

A Module Theoretic Approach To (B,C)-Invertibility, Tuğba Pakel, Burcu Üngör, Handan Köse, Sai̇t Halicioğlu, Abdullah Harmanci May 2026

A Module Theoretic Approach To (B,C)-Invertibility, Tuğba Pakel, Burcu Üngör, Handan Köse, Sai̇t Halicioğlu, Abdullah Harmanci

Turkish Journal of Mathematics

In this paper, we introduce and investigate the concept of an (r, f)-inverse in the context of modules, drawing inspiration from the (b, c)-inverse, which is the analogous notion in ring theory. We demonstrate the uniqueness of (r, f)-inverses in modules whenever they exist. We provide some necessary and sufficient conditions for the existence of (r, f)-inverses in modules.

Go to article

Existence Results And Uniqueness For Some Caputo-Hadamard Fractional Differential Equations Via The Measures Of Noncompactness, Manochehr Kazemi, Mohammad Esmael Samei, Hamid Reza Sahebi, Osman Tunç May 2026

Existence Results And Uniqueness For Some Caputo-Hadamard Fractional Differential Equations Via The Measures Of Noncompactness, Manochehr Kazemi, Mohammad Esmael Samei, Hamid Reza Sahebi, Osman Tunç

Turkish Journal of Mathematics

In this paper, the existence of solutions to Caputo–Hadamard fractional differential equations is investigated using measures of noncompactness and the Petryshyn fixed point theorem. Several new results are established, recovering certain earlier results under weaker conditions. Finally, two illustrative examples are presented.

Go to article

Proportion Of Nilpotent Subgroups In Finite Groups And Their Properties, João Victor Monteiros De Andrade, Leonardo Santos Da Cruz May 2026

Proportion Of Nilpotent Subgroups In Finite Groups And Their Properties, João Victor Monteiros De Andrade, Leonardo Santos Da Cruz

Turkish Journal of Mathematics

​This work introduces and investigates the function J(G) = Nil(G) / L(G) , where Nil(G) denotes the number of nilpotent subgroups and L(G) the total number of subgroups of a finite group G. The function J(G), defined on the interval (0,1], represents the proportion of nilpotent subgroups relative to the total number of subgroups, including trivial ones. It serves as a tool for analyzing structural patterns in finite groups, particularly in nonnilpotent families such as supersolvable and dihedral groups. Analytical results reveal the distribution of J(G) values across products of dihedral groups, emphasizing its density over (0,1]. Additionally, a probabilistic …

Go to article

Optimal Control Of An Inverse Two-Point Boundary Value Problem For A Pseudoparabolic Equation With Samarskii–Ionkin-Type Boundary Conditions, Khanlar R. Mamedov, Tursun K. Yuldashev, Zholdoshbek Zh. Shermamatov May 2026

Optimal Control Of An Inverse Two-Point Boundary Value Problem For A Pseudoparabolic Equation With Samarskii–Ionkin-Type Boundary Conditions, Khanlar R. Mamedov, Tursun K. Yuldashev, Zholdoshbek Zh. Shermamatov

Turkish Journal of Mathematics

This paper investigates an inverse optimal control problem for a pseudoparabolic equation governed by nonlinear control function in a two-point boundary condition. The differential equation is considered under Samarskii Ionkin-type boundary value conditions with respect to the spatial variable x. Necessary optimality conditions are derived, and the associated nonlinear functional equations are analyzed. Using the contraction mapping principle, the existence and uniqueness of the control function are established. Subsequently, the redefinition function and the state function are determined. The convergence of their respective Fourier series representations is rigorously proven.

Go to article

Close-To-Convexity Properties Of Inverse Hypergeometric Functions, Ijlal Hussain, Wasim Ul Haq, Janusz Sokol May 2026

Close-To-Convexity Properties Of Inverse Hypergeometric Functions, Ijlal Hussain, Wasim Ul Haq, Janusz Sokol

Turkish Journal of Mathematics

The normalized inverse hypergeometric function zFν−1(d, e, f; z) = ∑s=0∞ Aszs+1 is considered, where As = (f)s(ν + 1)s / (d)s(e)s. We aim to provide constraints on d, e, f, and ν under which zFν−1(d, e, f; z) belongs to various subclasses of the class of close-to-convex functions. Coefficient characterizations of these families are derived under additional conditions. Some associated operators …

Go to article

Ricci Solitons On Manifolds With Norden Golden Structure, Bang-Yen Chen, Foued Aloui, Mohammed Nisar, Majid Ali Choudhary May 2026

Ricci Solitons On Manifolds With Norden Golden Structure, Bang-Yen Chen, Foued Aloui, Mohammed Nisar, Majid Ali Choudhary

Turkish Journal of Mathematics

​The concept of golden structure is a compelling area with wide-ranging applications. In this paper, we introduce and investigate the notion of Norden golden Ricci solitons. In particular, we investigate Ricci solitons on a Norden golden Riemannian manifold of constant sectional curvature. Furthermore, we explore Ricci solitons and Norden golden Ricci solitons on Norden golden Riemannian manifolds whose potential vector fields are killing, conformal killing, concurrent, or homothetic.

Go to article

Comparisons Of Some Weighted Mixed Biased Estimators For The Linear Regression Model, Dünya Karapinar, Murat Polat, Ni̇met Özbay, Selahatti̇n Kaçiranlar May 2026

Comparisons Of Some Weighted Mixed Biased Estimators For The Linear Regression Model, Dünya Karapinar, Murat Polat, Ni̇met Özbay, Selahatti̇n Kaçiranlar

Turkish Journal of Mathematics

This paper presents comparative results on the two-parameter weighted mixed estimator, which is a distinct class of estimator defined to address the problem of multicollinearity. The two-parameter weighted mixed estimator is a general estimator that includes the weighted mixed estimator, the weighted mixed Liu estimator, and the weighted mixed ridge estimator. Detailed comparisons among the mentioned estimators are carried out based on the matrix mean square error. Theoretical findings are supported by two numerical examples in addition to a Monte Carlo simulation study.

Go to article

Leveraging Multimodal Large Language Models For Fall Risk Reduction In Older Adults In The Home: Proposed Model Design, Justin Do, Vivaswat Suresh, Lily Zhang, Bharvi M. Chavre, Jeremy Cha, Robert S. Pugliese May 2026

Leveraging Multimodal Large Language Models For Fall Risk Reduction In Older Adults In The Home: Proposed Model Design, Justin Do, Vivaswat Suresh, Lily Zhang, Bharvi M. Chavre, Jeremy Cha, Robert S. Pugliese

SKMC Student Presentations and Publications

This research letter proposes a novel model design leveraging natively multimodal large language models to identify fall risks and generate visualizations of recommended home environmental modifications, aiming to improve the accessibility and impact of personalized fall prevention advice for older adults. Through a pilot rating study, this work demonstrates that multimodal large language models can generate safe and actionable advice to reduce fall risk in lived spaces of older adults, and also generate realistic edits based on original images. While this concept needs further testing and clinical comparison, it highlights a promising avenue for further innovation of fall prevention tactics.

Go to article

Healthcare Leaders’ Information And Communication Technology Competencies Relationship To Their Information And Data Literacy Levels, Kenreka Tiwan Yeadon May 2026

Healthcare Leaders’ Information And Communication Technology Competencies Relationship To Their Information And Data Literacy Levels, Kenreka Tiwan Yeadon

Walden Dissertations and Doctoral Studies

No abstract provided.

Go to article

Reducing Unnecessary Cancellations In Interventional Radiology Procedures, Rose Tarantino May 2026

Reducing Unnecessary Cancellations In Interventional Radiology Procedures, Rose Tarantino

Walden Dissertations and Doctoral Studies

No abstract provided.

Go to article

Staff Education To Enhance Telepsychiatry Use Among Nurses, Shaundelle Mitchell May 2026

Staff Education To Enhance Telepsychiatry Use Among Nurses, Shaundelle Mitchell

Walden Dissertations and Doctoral Studies

No abstract provided.

Go to article

Staff Education To Enhance Home Care Staff Knowledge, Competence, And Confidence In End -Of-Life Communication, Pamela Rene Stubbs-Price May 2026

Staff Education To Enhance Home Care Staff Knowledge, Competence, And Confidence In End -Of-Life Communication, Pamela Rene Stubbs-Price

Walden Dissertations and Doctoral Studies

No abstract provided.

Go to article

Staff Education To Improve Psychiatric Nurses’ Knowledge On The Identification And Management Of Malignant Hyperthermia After Electroconvulsive Therapy, Grace Nwawuihe May 2026

Staff Education To Improve Psychiatric Nurses’ Knowledge On The Identification And Management Of Malignant Hyperthermia After Electroconvulsive Therapy, Grace Nwawuihe

Walden Dissertations and Doctoral Studies

No abstract provided.

Go to article

Law Enforcement Policies, Training, And Developmental Disability Encounters Involving Autism, Tariya Sanders May 2026

Law Enforcement Policies, Training, And Developmental Disability Encounters Involving Autism, Tariya Sanders

Walden Dissertations and Doctoral Studies

No abstract provided.

Go to article

Secondary Science Teachers’ Perspectives Regarding Virtual Laboratories As Substitutes For Practical Laboratory Experience, Judith Angelee Pryce-Francis May 2026

Secondary Science Teachers’ Perspectives Regarding Virtual Laboratories As Substitutes For Practical Laboratory Experience, Judith Angelee Pryce-Francis

Walden Dissertations and Doctoral Studies

No abstract provided.

Go to article

Obesity Rise Plateaus In Developed Nations And Accelerates In Developing Nations, Ncdrf Collaboration, Bin Zhou, Nowell H. Phelps, Agnese Galeazzi, Olivia N. O’Driscoll, James E. Bennett, Lakshya Jain, Ysé D’Ailhaud De Brisis, Gladys E. Maestre, Jesus D. Melgarejo May 2026

Obesity Rise Plateaus In Developed Nations And Accelerates In Developing Nations, Ncdrf Collaboration, Bin Zhou, Nowell H. Phelps, Agnese Galeazzi, Olivia N. O’Driscoll, James E. Bennett, Lakshya Jain, Ysé D’Ailhaud De Brisis, Gladys E. Maestre, Jesus D. Melgarejo

School of Medicine Publications

Global reporting of obesity is commonly based on comparisons over multiple decades1 and lacks a granular and systematic analysis of its dynamics. We used 4,050 population-based studies with measured height and weight data on 232 million participants to assess the worldwide dynamics of obesity from 1980 to 2024. The rise in obesity decelerated in school-aged children and adolescents throughout the 1990s in many high-income countries, and subsequently plateaued in most at age-standardized prevalences spanning 20 percentage points, from 3–4% for girls in Japan, Denmark and France to 23% for boys in the USA. There were indications of a small …

Go to article

Information Usage As A Performance Driver In Supply Chains: Integrating Machine Learning, Structural Modeling, And Efficiency Analysis, Asli Z. Dag May 2026

Information Usage As A Performance Driver In Supply Chains: Integrating Machine Learning, Structural Modeling, And Efficiency Analysis, Asli Z. Dag

Harrisburg University Dissertations and Theses

The present study investigates ways in which companies utilize information to improve suppliers’ performance within their supply chains. In the literature, the existing studies focus largely on information sharing between companies and suppliers, while less is known about how organizations then apply shared information during decision-making in ways that impact outcomes for suppliers. Importantly, the extant research demonstrates that information sharing can improve the visibility of issues arising along the supply chain, raise the coordination between those within the chain, and reduce uncertainty about the necessary supply and demand; however, the benefits in these areas remain limited unless the relevant …

Go to article

Jane Doe V. East Stroudsburg University Of Pennsylvania May 2026

Jane Doe V. East Stroudsburg University Of Pennsylvania

2026 Decisions

USDC for the Middle District of Pennsylvania

Go to article

Usa V. Deron Nixon May 2026

Usa V. Deron Nixon

2026 Decisions

USDC for the Western District of Pennsylvania

Go to article

Do I Have To Eat That?, Kate Graves May 2026

Do I Have To Eat That?, Kate Graves

UNH Cooperative Extension

No abstract provided.

Go to article

The Impact Of Employment On Sense Of Belonging And Metacognitive Awareness: A Mixed-Methods Study Of Undergraduate Students’ Mathematical Performance, Erin Ryan May 2026

The Impact Of Employment On Sense Of Belonging And Metacognitive Awareness: A Mixed-Methods Study Of Undergraduate Students’ Mathematical Performance, Erin Ryan

Theses

This study investigated how employment intensity affects two critical factors for academic success: a student’s sense of belonging and their metacognitive awareness (the ability to monitor and manage their own learning). Using a mixed-methods approach at the Rochester Institute of Technology, we analyzed survey data through multi-level modeling and conducted qualitative interviews to capture the personal experiences of employed students. Results reveal that students working off-campus for more than eleven hours a week showed significantly lower sense of belonging and metacognitive awareness scores than unemployed students. However, on-campus employment did not show the same effect. Both quantitative and qualitative results …

Go to article

Abl Kinases Regulate Fgf Signaling Independent Of Crk Phosphorylation To Prevent Peters Anomaly Type Ii, Hao Wu, Yingyu Mao, Qian Wang, Honglian Yu, Michael Bouaziz, Neoklis Makrides, Enpeng Wang, Zhipeng Ding, Anthony J Koleske, Glenn L Radice, Jerry Hsu, Xin Zhang May 2026

Abl Kinases Regulate Fgf Signaling Independent Of Crk Phosphorylation To Prevent Peters Anomaly Type Ii, Hao Wu, Yingyu Mao, Qian Wang, Honglian Yu, Michael Bouaziz, Neoklis Makrides, Enpeng Wang, Zhipeng Ding, Anthony J Koleske, Glenn L Radice, Jerry Hsu, Xin Zhang

2020-Current year OA Pubs

Peters anomaly is an anterior segment dysgenesis and a leading cause of congenital corneal opacity. Here, we show that loss of ABL kinases restores lens induction in the absence of FGF signaling but induces Peters anomaly type II independently of ERK signaling, a phenotype also observed with elevated FGF-Ras activity. This defect is rescued by allelic deletion of the ABL substrates CRK and CRKL. Contrary to prevailing models, ABL kinases do not act through direct phosphorylation of CRK proteins; instead, they phosphorylate PTPN12, suppressing p130CAS phosphorylation and CRK recruitment required for RHO GTPase activation. ABL kinase deficiency reduces actomyosin contractility …

Go to article

Hierarchical Small Molecule Inhibition Of Myst Acetyltransferases, Xuemin Chen, Alexandra Castroverde, Minervo Perez, Ronald Holewinski, Kiall F Suazo, Rashmi Karki, Thorkell Andresson, Benjamin A Garcia, Jordan L Meier May 2026

Hierarchical Small Molecule Inhibition Of Myst Acetyltransferases, Xuemin Chen, Alexandra Castroverde, Minervo Perez, Ronald Holewinski, Kiall F Suazo, Rashmi Karki, Thorkell Andresson, Benjamin A Garcia, Jordan L Meier

2020-Current year OA Pubs

MYST lysine acetyltransferases (KATs) are a class of epigenetic enzymes critical for cellular function that constitute an emerging therapeutic target in cancer. Recently, several drug-like MYST inhibitors have been reported that show promise in preclinical models as well as in clinical trials of breast cancer. Understanding the specificity of these molecules is critical for their effective use as chemical probes. Here we apply an integrated profiling strategy to systematically define the potency and selectivity of drug-like MYST KAT inhibitors. First, we use optimized chemoproteomic profiling and histone acetylation biormarkers to study the industry-developed KAT inhibitor PF-9363. This reveals dose-dependent engagement …

Go to article

Contributor Guidelines, Usawc Press May 2026

Contributor Guidelines, Usawc Press

The US Army War College Quarterly: Parameters

No abstract provided.

Go to article

The Impact Of Participation In Career And Technical Education (Cte) On High School Graduation, College-Going Status, And Entry Into The Workforce, Paul Wambugu May 2026

The Impact Of Participation In Career And Technical Education (Cte) On High School Graduation, College-Going Status, And Entry Into The Workforce, Paul Wambugu

Seton Hall University Dissertations and Theses (ETDs)

This study examined the relationship between high school students' participation in Career and Technical Education (CTE) and three postsecondary student outcomes using the High School Longitudinal Study of 2009 (HSLS:09). CTE participation was measured by the number of Carnegie credits earned in CTE. Three student outcomes were analyzed: on-time high school graduation, college enrollment, and workforce entry. Descriptive statistics, bivariate analyses, and multivariate logistic regression models were estimated while controlling for socioeconomic status, race/ethnicity, sex, disability status, and academic performance indicators. Results indicated that CTE concentrators who earned 3 or more Carnegie credits in CTE had higher odds of graduating …

Go to article

Exercise And Longevity In A Changing World, Andrew Rowan Dphil, Kathleen Rowan May 2026

Exercise And Longevity In A Changing World, Andrew Rowan Dphil, Kathleen Rowan

WellBeing News

This article explores how exercise contributes to longevity and overall well-being in the face of changing environmental, technological, and lifestyle conditions. It highlights the importance of maintaining regular physical activity throughout life to support resilience, healthy aging, and long-term physical and mental health.

Go to article

Cat Management In Australia: Emerging Policies And Competing Perspectives, Andrew Rowan Dphil May 2026

Cat Management In Australia: Emerging Policies And Competing Perspectives, Andrew Rowan Dphil

WellBeing News

This article explores Australia’s evolving cat management policies and the growing debate surrounding feral, stray, and companion cats. It highlights initiatives such as containment regulations, eradication campaigns, and trap-neuter-vaccinate-return programs while examining the tensions between biodiversity protection, animal welfare, and public attitudes toward cats.

Go to article

Brain Organoid Ethics, Andrew Rowan Dphil May 2026

Brain Organoid Ethics, Andrew Rowan Dphil

WellBeing News

This article examines the ethical implications of brain organoid research as advances in stem-cell science enable increasingly sophisticated neural tissue models. It discusses questions surrounding consciousness, moral status, informed consent, commercialization, and regulatory oversight, emphasizing the need for proactive ethical frameworks and precautionary governance before the technology advances further.

Go to article

First Prev Next Last