TY - INPR A1 - Kloeden, Peter E. A1 - Sonner, Stefanie A1 - Surulescu, Christina T1 - A nonlocal sample dependence SDE-PDE system modeling proton dynamics in a tumor N2 - A nonlocal stochastic model for intra- and extracellular proton dynamics in a tumor is proposed. The intracellular dynamics is governed by an SDE coupled to a reaction-diffusion equation for the extracellular proton concentration on the macroscale. In a more general context the existence and uniqueness of solutions for local and nonlocal SDE-PDE systems are established allowing, in particular, to analyze the proton dynamics model both, in its local version and the case with nonlocal path dependence. Numerical simulations are performed to illustrate the behavior of solutions, providing some insights into the effects of randomness on tumor acidity. KW - multiscale model KW - intra- and extracellular proton dynamics KW - tumor acidity KW - stochastic differential equations KW - partial differential equations KW - nonlocal sample dependence Y1 - 2015 UR - https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/4104 UR - https://nbn-resolving.org/urn:nbn:de:hbz:386-kluedo-41040 ER -