Results 41 to 50 of about 661,238 (311)

On Deterministic and Stochastic Multiple Pathogen Epidemic Models

Epidemiologia, 2021
In this paper, we consider a stochastic epidemic model with two pathogens. In order to analyze the coexistence of two pathogens, we compute numerically the expectation time until extinction (the mean persistence time), which satisfies a stationary ...
Fernando Vadillo
doaj   +1 more source

Stochastic Maximum Principle for Optimal Control ofPartial Differential Equations Driven by White Noise

, 2017
We prove a stochastic maximum principle ofPontryagin's type for the optimal control of a stochastic partial differential equationdriven by white noise in the case when the set of control actions is convex.
Fuhrman, Marco, Hu, Ying, Tessitore, Gianmario   +2 more
core   +1 more source

A review of artificial intelligence in brachytherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Artificial intelligence (AI) has the potential to revolutionize brachytherapy's clinical workflow. This review comprehensively examines the application of AI, focusing on machine learning and deep learning, in various aspects of brachytherapy.
Jingchu Chen, Richard L. J. Qiu, Tonghe Wang, Shadab Momin, Xiaofeng Yang   +4 more
wiley   +1 more source

Effect of correlation on bond prices in short rate models of interest rates [PDF]

Mathematica Moravica, 2018
Short rate models of interest rates are formulated in terms of stochastic differential equations which describe the evoution of an instantaneous interest rate, called short rate.
Girová Zuzana, Stehíková Beáta
doaj  

Abstract Functional Stochastic Evolution Equations Driven by Fractional Brownian Motion

Abstract and Applied Analysis, 2014
We investigate a class of abstract functional stochastic evolution equations driven by a fractional Brownian motion in a real separable Hilbert space. Global existence results concerning mild solutions are formulated under various growth and compactness ...
Mark A. McKibben, Micah Webster
doaj   +1 more source

Optimal Exploitation of a General Renewable Natural Resource under State and Delay Constraints

Mathematics, 2020
In this work, we study an optimization problem arising in the management of a natural resource over an infinite time horizon. The resource is assumed to evolve according to a logistic stochastic differential equation.
M’hamed Gaïgi, Idris Kharroubi, Thomas Lim   +2 more
doaj   +1 more source

An Analysis and Global Identification of Smoothless Variable Order of a Fractional Stochastic Differential Equation

Fractal and Fractional, 2023
We establish both the uniqueness and the existence of the solutions to a hidden-memory variable-order fractional stochastic partial differential equation, which models, e.g., the stochastic motion of a Brownian particle within a viscous liquid medium ...
Qiao Li, Xiangcheng Zheng, Hong Wang, Zhiwei Yang, Xu Guo   +4 more
doaj   +1 more source

AAPM Task Group No. 249.B—Essentials and guidelines for clinical medical physics residency training program

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract The establishment of guidelines and curriculum standards for medical physics residency training is a critical component of setting expectations and competencies for the profession. Since the last publication of these standards, residency training has become integrated into the eligibility criteria for most medical physics certification bodies.
Jonathon A. Nye, Joseph P. Dugas, William D. Erwin, David P. Gierga, Darryl G. Kaurin, Stephanie M. Leon, Ho‐Ling Anthony Liu, Zheng Feng Lu, Alphonso W. Magri, Lynn N. Rill, Leah K. Schubert, Beth A. Schueler, Irina Vergalasova, John Vetter, Brian D. Wichman, Amy Shu‐Jung Yu, Dandan Zheng   +16 more
wiley   +1 more source

Stochastic Optimization Theory of Backward Stochastic Differential Equations Driven by G-Brownian Motion

Abstract and Applied Analysis, 2013
We consider the stochastic optimal control problems under G-expectation. Based on the theory of backward stochastic differential equations driven by G-Brownian motion, which was introduced in Hu et al.
Zhonghao Zheng, Xiuchun Bi, Shuguang Zhang   +2 more
doaj   +1 more source

A brief and personal history of stochastic partial differential equations [PDF]

arXiv, 2020
We trace the evolution of the theory of stochastic partial differential equations from the foundation to its development, until the recent solution of long-standing problems on well-posedness of the KPZ equation and the stochastic quantization in dimension three.
arxiv