Results 121 to 130 of about 25,343,404 (305)

Numerical Investigation of a Diffusive SIR Model: Focus on Positivity Preservation

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we consider a system of semilinear partial differential equations (PDEs) representing a spatially extended SIR epidemic model. A brief analytical investigation of the well‐posedness and positivity of the solutions is provided in the appendix, while the main focus is on the numerical treatment of the model.
Rahele Mosleh, Claudia Panico, Messoud Efendiyev   +2 more
wiley   +1 more source

Do Policy Capacities Matter for Federal Policy Design? Evidence From the Implementation of Three Social Policies in Brazil

Public Administration and Development, EarlyView.
ABSTRACT Bringing together the literature on policy design, policy capacity and policy making in multilevel systems, this paper argues that the effectiveness of policy design in federal countries depends, ceteris paribus, on the adequacy of federal and local policy capacities.
Giliberto Capano, Vanessa Elias de Oliveira   +1 more
wiley   +1 more source

Viscosity Reduction in Diluted Polyethylene Melts: A Comparative Study of Semiempirical, Viscoelastic, and Equation‐of‐State Modeling Frameworks

Polymer Engineering &Science, EarlyView.
Schematic of the in‐line rheometry setup and the evaluation of three distinct modeling frameworks (semiempirical, viscoelastic, and EOS) to predict viscosity reduction in diluted polyethylene melts via time‐concentration superposition (Illustration generated via ChatGPT).
Ernst Georg Viehböck, Alexander Hammer, Markus Kirchmayr, Christof Murnig, Christian Paulik, Gerald Berger‐Weber   +5 more
wiley   +1 more source

Slow and fast systems with Hamiltonian reduced problems

Electronic Journal of Differential Equations, 2010
Slow and fast systems are characterized by having some of the derivatives multiplied by a small parameter $epsilon$. We study systems of reduced problems which are Hamiltonian equations, with or without a slowly varying parameter.
Maamar Benbachir, Karim Yadi, Rachid Bebbouchi   +2 more
doaj  

Item Response Theory Analysis of the Classroom Level Adversity Scale

Psychology in the Schools, EarlyView.
ABSTRACT The Classroom Level Adversity Scale (CLA) captures teachers' perceptions of the overall needs and challenges present in their classrooms. It reflects a collective classroom characteristic based on teacher report, providing insight into the degree of ecological risk teachers perceive when working with their students.
Allyson L. Hayward, Kristen L. Granger, Jason C. Chow   +2 more
wiley   +1 more source

Transcriptomic stress responses in Vaccinium spp. F1 hybrids: Implications for temperature‐resilient cranberry breeding using a crop wild relative

PLANTS, PEOPLE, PLANET, EarlyView.
Climate extremes threaten the sustainability of cranberry production, a culturally and economically important North American crop. This study demonstrates that wild cranberries (Vaccinium oxycoccos) harbor genetic variation that may enhance cold stress resilience when introduced into cultivated cranberry through hybridization.
Audrey Dickinson, Jackson Kubal, Nicholas Allsing, Emily Murray, Todd P. Michael, James J. Polashock   +5 more
wiley   +1 more source

Myocardial Perfusion Defects in Hypertrophic Cardiomyopathy Mutation Carriers

Journal of the American Heart Association, EarlyView., 2021
Background Impaired myocardial blood flow (MBF) in the absence of epicardial coronary disease is a feature of hypertrophic cardiomyopathy (HCM). Although most evident in hypertrophied or scarred segments, reduced MBF can occur in apparently normal segments.
Rebecca K. Hughes, Claudia Camaioni, João B. Augusto, Kristopher Knott, Ellie Quinn, Gabriella Captur, Andreas Seraphim, George Joy, Petros Syrris, Perry M. Elliott, Saidi Mohiddin, Peter Kellman, Hui Xue, Luis R. Lopes, James C. Moon   +14 more
wiley   +1 more source

Human Epidermal Growth Factor Receptor 2 Expression in Prostatic Carcinomas: A Systematic Review and Meta‐Analysis of a Potential Therapeutic Target

The Prostate, EarlyView.
ABSTRACT Introduction The clinical relevance of HER2 expression profile in solid cancers has expanded with the evolving landscape of HER2 targeting agents. This systematic review and meta‐analysis aim to detail the prevalence of HER (over)expression in prostate cancer and identify patient/disease subgroups with enriched HER2 overexpression.
Jacky T. F. Luk, Alex H. Lin, Esther K. C. Cheung, Renald Meçani, Taulant Muka, Jana Nano, Joanna K. M. Ng, Matthew K. L. Chiu, Bryan C. W. Li, Rong Na, Joshua J. X. Li   +10 more
wiley   +1 more source

Position Transmission Control in Tendon–Sheath Mechanisms: A Critical Review and a Promising Solution

SmartBot, EarlyView.
Tendon‐sheath mechanisms are widely used in various robotic systems for remote position transmission, including aerospace vehicles, flexible rescue robots, dexterous robotic hands, exoskeleton robots, soft wearable devices, industrial robots, and flexible surgical robots.
Jiaqi Li, Qian Gao
wiley   +1 more source

Optimal control for a variable-order diffusion-wave equation with a reaction term; A numerical study

Partial Differential Equations in Applied Mathematics
In this paper, optimal control for a variable-order diffusion-wave equation with a reaction term is numerically studied, where the variable-order operator is defined in the sense of Caputo proportional constant.
N.H. Sweilam, F. Megahed, S.A. Shatta, D. Baleanu   +3 more
doaj   +1 more source