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Viscoelasticity and related phenomena are of great importance in the study of mechanical properties of material especially, biological materials. Certain materials show some complex effects in mechanical tests, which cannot be described by…

生物物理 · 物理学 2017-09-19 Mohammad Amirian Matlob , Yousef Jamali

Epidemiological modeling is vital in understanding disease dynamics and guiding public health interventions. This study presents a time-fractional SEIR model to describe the transmission dynamics of Mpox, incorporating memory effects via…

数值分析 · 数学 2026-01-29 Gaurav Saini , Bappa Ghosh , Sunita Chand , Jugal Mohapatra

A regression method for proportional, or fractional, data with mixed effects is outlined, designed for analysis of datasets in which the outcomes have substantial weight at the bounds. In such cases a normal approximation is particularly…

统计方法学 · 统计学 2018-05-23 Colman Humphrey , Dan Swingley

This paper is focused on local and global stability of a fractional-order predator-prey model with habitat complexity constructed in the Caputo sense and corresponding discrete fractional-order system. Mathematical results like positivity…

动力系统 · 数学 2019-06-05 Shuvojit Mondal , Milan Biswas , Nandadulal Bairagi

Accelerators with power-law memory are proposed in the framework of the discrete time approach. To describe discrete accelerators we use the capital stock adjustment principle, which has been suggested by Matthews.The suggested discrete…

经济学 · 定量金融 2017-07-25 Valentina V. Tarasova , Vasily E. Tarasov

Stochastic reduced-order models are widely used to represent the effective dynamics of complex systems, but estimating their drift and diffusion coefficients from data remains challenging. Standard approaches often rely on short-time…

机器学习 · 统计学 2026-04-28 Ludovico T. Giorgini

The logistic equation is ubiquitous in applied mathematics as a minimal model of saturating growth. Here, we examine a broad generalisation of the logistic growth model to discretely structured populations, motivated by examples that range…

种群与进化 · 定量生物学 2025-05-15 Benjamin J. Walker , Helen M. Byrne

This paper proposes an approach for segmenting a task consisting of compliant motions into phases, learning a primitive for each segmented phase of the task, and reproducing the task by sequencing primitives online based on the learned…

机器人学 · 计算机科学 2018-09-05 Tesfamichael Marikos Hagos , Markku Suomalainen , Ville Kyrki

A free boundary diffusive logistic model finds application in many different fields from biological invasion to wildfire propagation. However, many of these processes show a random nature and contain uncertainties in the parameters. In this…

数值分析 · 数学 2025-01-17 M. -C. Casabán , R. Company , V. N. Egorova , L. Jódar

We describe a class of evolution systems of linear partial differential equations with the Caputo-Dzhrbashyan fractional derivative of order $\alpha \in (0,1)$ in the time variable $t$ and the first order derivatives in spatial variables…

偏微分方程分析 · 数学 2013-09-10 Anatoly N. Kochubei

We investigate the celebrated mathematical SICA model but using fractional differential equations in order to better describe the dynamics of HIV-AIDS infection. The infection process is modelled by a general functional response and the…

We review some applications of fractional calculus developed by the author (partly in collaboration with others) to treat some basic problems in continuum and statistical mechanics. The problems in continuum mechanics concern mathematical…

统计力学 · 物理学 2012-01-05 Francesco Mainardi

There has been considerable recent study in "sub-diffusion" models that replace the standard parabolic equation model by a one with a fractional derivative in the time variable. There are many ways to look at this newer approach and one…

偏微分方程分析 · 数学 2019-04-08 William Rundell , Zhidong Zhang

Federated- and Continual Learning have been established as approaches to enable privacy-aware learning on continuously changing data, as required for deploying AI systems in histopathology images. However, data shifts can occur in a dynamic…

机器学习 · 计算机科学 2025-01-09 Niklas Babendererde , Haozhe Zhu , Moritz Fuchs , Jonathan Stieber , Anirban Mukhopadhyay

This short chapter provides a fractional generalization of gradient mechanics, an approach (originally advanced by the author in the mid 80s) that has gained world-wide attention in the last decades due to its capability of modeling pattern…

经典物理 · 物理学 2018-12-27 E. C. Aifantis

Modeling human operator's dynamic plays a very important role in the manual closed-loop control system, and it is an active research area for several decades. Based on the characteristics of human brain and behaviour, a new kind of…

系统与控制 · 计算机科学 2016-01-11 Jiacai Huang , Yangquan Chen , Haibin Li , Xinxin Shi

Fractional calculus has been used to describe physical systems with complexity. Here, we show that a fractional calculus approach can restore or include complexity in any physical systems that can be described by partial differential…

介观与纳米尺度物理 · 物理学 2024-08-06 Kyle Rockwell , Ezio Iacocca

It is a well known fact that subdiffusion equations in terms of fractional derivatives can be obtained from Continuous Time Random Walk (CTRW) models with long-tailed waiting time distributions. Over the last years various authors have…

生物物理 · 物理学 2010-06-15 S. B. Yuste , E. Abad , K. Lindenberg

In this paper an offset-free model predictive control scheme is presented for fractional-order systems using the Gr\"unwald-Letnikov derivative. The infinite-history fractional-order system is approximated by a finite-dimensional…

动力系统 · 数学 2019-04-26 Sotiris Ntouskas , Haralambos Sarimveis , Pantelis Sopasakis

This paper introduces a novel fractional-order chemostat model (FOCM) incorporating Caputo fractional derivative with sliding memory (CFDS) to capture microbial memory effects in biological water treatment, addressing limitations of…

最优化与控制 · 数学 2025-11-25 Kareem T. Elgindy , Muneerah Al Nuwairan , Liew Siaw Ching