Results 111 to 120 of about 327,788 (207)

Stability Results for an Age-Structured SIS Epidemic Model with Vector Population

Journal of Applied Mathematics, 2015
We formulate an age-structured SIS epidemic model with periodic parameters, which includes host population and vector population. The host population is described by two partial differential equations, and the vector population is described by a single ...
He-Long Liu, Jing-Yuan Yu, Guang-Tian Zhu   +2 more
doaj   +1 more source

Risk Measure Duality Without Structure

Mathematical Finance, EarlyView.
ABSTRACT We study risk measures on vector spaces of random variables which a priori have little structure, such as spaces lacking law invariance or a lattice structure. Ensuring the existence of a tractable dual representation (one which does not contain non‐sigma‐additive measures) is one of the main problems in risk measure theory, and we address it ...
Vasily Melnikov
wiley   +1 more source

Barriers and Bridges: The Trade, Productivity, and Welfare Effects of the Belt and Road Initiative

The World Economy, EarlyView.
ABSTRACT This paper evaluates the impact of the Belt and Road Initiative (BRI) on trade, productivity, and welfare using a multi‐country, multi‐sector Ricardian model with input–output linkages. Gravity estimates reveal asymmetric trade effects: BRI participation increases imports from China in textiles, wood and paper, and electrical machinery, while ...
Shuangcen Li
wiley   +1 more source

Generalized J-integral – mathematical foundation

Boundary Value Problems
This article describes the mathematics for building the foundations of the theory of the Generalized J-integral (GJ-integral) in various variational problems defined on D that gives the shape derivative on singular points such as boundaries, cracks ...
Kohji Ohtsuka
doaj   +1 more source

HierAnom‐Path: Zero‐Shot Rare Cancer Detection in Histopathology via Hierarchical Foundation Model Adaptation

Computational and Systems Oncology, Volume 6, Issue 1, December 2026.
ABSTRACT Rare cancers collectively represent 20%–25% of all malignancies yet yield fewer than 50 annotated whole‐slide images (WSIs) per subtype in publicly available archives, rendering supervised deep learning inapplicable. We present HierAnom‐Path, to the best of our knowledge, the first framework for zero‐shot rare cancer anomaly detection in ...
Noora Saleem Jumaah, Mohanad Sameer Jabbar, Saif H. Alwaeli, Noor Ayesha, Mohamed Babiker A. Mohamed, Muhammad I. Khan   +5 more
wiley   +1 more source

Inverse problems for semilinear elliptic PDE with a general nonlinearity a(x,u)$a(x,u)$

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract This article studies the inverse problem of recovering a nonlinearity in an elliptic equation Δu+a(x,u)=0$\Delta u + a(x,u) = 0$ from boundary measurements of solutions. Previous results based on first‐order linearization achieve this under a sign condition on ∂ua(x,u)$\partial _u a(x,u)$, and results based on higher order linearization ...
David Johansson, Janne Nurminen, Mikko Salo   +2 more
wiley   +1 more source

Early-reverberation imaging functions for bounded elastic domains

Acta Acustica
For the ultrasonic inspection of bounded elastic structures, finite-duration imaging functions are derived in the Fourier–Laplace domain, where efficient computational tools exist for solving problems in linear elasticity.
Ducasse Éric, Rodriguez Samuel, Bonnet Marc   +2 more
doaj   +1 more source

Melt‐Regulated Crustal Kinematics in the Pamir, NW Tibetan Plateau: Insights From Surface‐Wave Tomography

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract The Pamir, located at the northwestern margin of the Tibetan Plateau, is undergoing E–W extension within its interior, accommodated by micro‐block motions along major fault systems; however, the mechanisms governing this modern block kinematics remain elusive.
Bingfeng Zhang, Shijie Hao, Xuewei Bao, Ping Tong   +3 more
wiley   +1 more source

Fractional Moment Theory for Anomalous Transport: A Unified Framework for Lévy Flights, Fractals, and Complex Dynamical Systems

Mathematical Methods in the Applied Sciences, Volume 49, Issue 13, Page 14964-15009, 15 September 2026.
ABSTRACT We develop a unified mathematical framework extending classical moment theory from discrete integer orders to a continuous spectrum of real orders f>0$$ f>0 $$, providing a systematic statistical characterization of complex systems exhibiting power‐law behavior.
Farrukh A. Chishtie
wiley   +1 more source

Fréchet-Derivative-Based Global Sensitivity Analysis and Its Physical Meanings in Structural Design

Applied Sciences
Sensitivity analysis is essential for uncertainty-based structural design and analysis, especially global sensitivity analysis, which can reflect the overall physical properties of large and complex computational models with stochastic parameters.
Weifeng Tao, Zhiqiang Wan, Xiuli Wang
doaj   +1 more source