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In this paper we present a method for estimating unknown parameters that appear on an avascular, spheric tumour growth model. The model for the tumour is based on nutrient driven growth of a continuum of live cells, whose birth and death…

数学物理 · 物理学 2012-09-14 D. A. Knopoff , D. R. Fernández , G. A. Torres , C. V. Turner

We study a non-local variant of a diffuse interface model proposed by Hawkins--Darrud et al. (2012) for tumour growth in the presence of a chemical species acting as nutrient. The system consists of a Cahn--Hilliard equation coupled to a…

偏微分方程分析 · 数学 2017-03-13 Sergio Frigeri , Kei Fong Lam , Elisabetta Rocca

We propose a diffuse interface model to describe tumor as a multicomponent deformable porous medium. We include mechanical effects in the model by coupling the mass balance equations for the tumor species and the nutrient dynamics to a…

偏微分方程分析 · 数学 2021-09-23 Pavel Krejci , Elisabetta Rocca , Juergen Sprekels

This paper concerns a distributed optimal control problem for a tumor growth model of Cahn-Hilliard type including chemotaxis with possibly singular potentials, where the control and state variables are nonlinearly coupled. First, we…

最优化与控制 · 数学 2023-06-06 Pierluigi Colli , Andrea Signori , Jürgen Sprekels

The availability of cancer measurements over time enables the personalised assessment of tumour growth and therapeutic response dynamics. However, many tumours are treated after diagnosis without collecting longitudinal data, and cancer…

偏微分方程分析 · 数学 2024-04-19 Elena Beretta , Cecilia Cavaterra , Matteo Fornoni , Guillermo Lorenzo , Elisabetta Rocca

In this paper, we study an optimal control problem for a two-dimensional Cahn-Hilliard-Darcy system with mass sources that arises in the modeling of tumor growth. The aim is to monitor the tumor fraction in a finite time interval in such a…

偏微分方程分析 · 数学 2023-07-28 Juergen Sprekels , Hao Wu

We consider an inpainting model proposed by A. Bertozzi et al., which is based on a Cahn-Hilliard-type equation. This equation describes the evolution of an order parameter that represents an approximation of the original image occupying a…

最优化与控制 · 数学 2025-05-30 Elena Beretta , Cecilia Cavaterra , Matteo Fornoni , Maurizio Grasselli

This paper treats a distributed optimal control problem for a tumor growth model of Cahn-Hilliard type including chemotaxis. The evolution of the tumor fraction is governed by a variational inequality corresponding to a double obstacle…

最优化与控制 · 数学 2021-04-21 Pierluigi Colli , Andrea Signori , Jürgen Sprekels

We consider a particular phase field system which physical context is that of tumor growth dynamics. The model we deal with consists of a Cahn-Hilliard type equation governing the evolution of the phase variable which takes into account the…

偏微分方程分析 · 数学 2019-08-30 Andrea Signori

We consider a diffuse interface model for tumor growth consisting of a Cahn--Hilliard equation with source terms coupled to a reaction-diffusion equation, which models a tumor growing in the presence of a nutrient species and surrounded by…

偏微分方程分析 · 数学 2017-05-04 Harald Garcke , Kei Fong Lam

Using basic thermodynamic principles we derive a Cahn--Hilliard--Darcy model for tumour growth including nutrient diffusion, chemotaxis, active transport, adhesion, apoptosis and proliferation. The model generalises earlier models and in…

偏微分方程分析 · 数学 2016-06-06 Harald Garcke , Kei Fong Lam , Emanuel Sitka , Vanessa Styles

In this paper we study nonlocal-to-local asymptotics for a tumor-growth model coupling a viscous Cahn-Hilliard equation describing the tumor proportion with a reaction-diffusion equation for the nutrient phase parameter. First, we prove…

偏微分方程分析 · 数学 2023-11-20 Elisa Davoli , Elisabetta Rocca , Luca Scarpa , Lara Trussardi

We study a stochastic phase-field model for tumor growth dynamics coupling a stochastic Cahn-Hilliard equation for the tumor phase parameter with a stochastic reaction-diffusion equation governing the nutrient proportion. We prove strong…

偏微分方程分析 · 数学 2021-01-19 Carlo Orrieri , Elisabetta Rocca , Luca Scarpa

This paper investigates an optimal control problem associated with a two-dimensional multi-species Cahn-Hilliard-Keller-Segel tumor growth model, which incorporates complex biological processes such as species diffusion, chemotaxis,…

偏微分方程分析 · 数学 2024-07-26 Pierluigi Colli , Gianni Gilardi , Andrea Signori , Jürgen Sprekels

An optimal control problem for a model of tumor growth is studied. In a given subdomain, it is required to minimize the density of tumor cells, while the drug concentration in tissue is limited by given minimal and maximal values. Based on…

最优化与控制 · 数学 2024-07-12 Andrey Kovtanyuk , Christina Kuttler , Kristina Koshel , Alexander Chebotarev

We consider an evolutionary PDE system coupling the Cahn-Hilliard equation with singular potential, mass source and transport effects, to a Brinkman-type relation for the macroscopic velocity field and to a further equation describing the…

偏微分方程分析 · 数学 2024-11-20 Giulio Schimperna

In this paper we consider two diffuse interface models for tumor growth coupling a Cahn-Hilliard type equation for the tumor phase parameter to a reaction-diffusion type equation for the nutrient. The models are distinguished by the…

偏微分方程分析 · 数学 2024-07-31 Filippo Riva , Elisabetta Rocca

In this paper, we study an optimal control problem for a macroscopic mechanical tumour model based on the phase field approach. The model couples a Cahn--Hilliard type equation to a system of linear elasticity and a reaction-diffusion…

最优化与控制 · 数学 2021-04-21 Harald Garcke , Kei Fong Lam , Andrea Signori

In this paper, the authors study the distributed optimal control of a system of three evolutionary equations involving fractional powers of three selfadjoint, monotone, unbounded linear operators having compact resolvents. The system is a…

最优化与控制 · 数学 2019-07-25 Pierluigi Colli , Gianni Gilardi , Jürgen Sprekels

A distributed optimal control problem for an extended model of phase field type for tumor growth is addressed. In this model, the chemotaxis effects are also taken into account. The control is realized by two control variables that design…

偏微分方程分析 · 数学 2021-03-23 Pierluigi Colli , Andrea Signori , Jürgen Sprekels