Zobrazeno 1 - 10
of 784
pro vyhledávání: '"Torres Ruíz A"'
Publikováno v:
Communications in Nonlinear Science and Numerical Simulation, 139,108258, 2024
We analyze a modification of the Richards growth model by introducing a time-dependent perturbation in the growth rate. This modification becomes effective at a special switching time, which represents the first-crossing-time of the Richards growth c
Externí odkaz:
http://arxiv.org/abs/2410.22860
Publikováno v:
Mathematical Biosciences and Engineering, 21(9), 7067-7083, 2024
We consider a time-inhomogeneous diffusion process able to describe the dynamics of infected people in a susceptible-infectious epidemic model in which the transmission intensity function is time-dependent. Such a model is well suited to describe som
Externí odkaz:
http://arxiv.org/abs/2410.21954
We introduce a sound and complete equational theory capturing equivalence of discrete probabilistic programs, that is, programs extended with primitives for Bernoulli distributions and conditioning, to model distributions over finite sets of events.
Externí odkaz:
http://arxiv.org/abs/2408.14701
Publikováno v:
Biosystems, 163, 11-22. 2018
A stochastic diffusion process, whose mean function is a hyperbolastic curve of type I, is presented. Themain characteristics of the process are studied and the problem of maximum likelihood estimation forthe parameters of the process is considered.
Externí odkaz:
http://arxiv.org/abs/2402.03416
Publikováno v:
ASMBI, 2018, 34, 376-394
Accurately charting the progress of oil production is a problem of great current interest. Oil production is widely known to be cyclical: in any given system, after it reaches its peak, a decline will begin. With this in mind, Marion King Hubbert dev
Externí odkaz:
http://arxiv.org/abs/2401.16447
Publikováno v:
Communications in Nonlinear Science and Numerical Simulation 107 (2022) 106100
We discuss a general growth curve including several parameters, whose choice leads to a variety of models including the classical cases of Malthusian, Richards, Gompertz, Logistic and some their generalizations. The advantage is to obtain a single ma
Externí odkaz:
http://arxiv.org/abs/2402.00882
Publikováno v:
Mathematics, 2019, 7, 541
The behaviour of many dynamic real phenomena shows different phases, with each one following a sigmoidal type pattern. This requires studying sigmoidal curves with more than one inflection point. In this work, a diffusion process is introduced whose
Externí odkaz:
http://arxiv.org/abs/2401.15737
Publikováno v:
Statistical Papers, 64, 2023, 1391-1438
We consider a lognormal diffusion process having a multisigmoidal logistic mean, useful to model the evolution of a population which reaches the maximum level of the growth after many stages. Referring to the problem of statistical inference, two pro
Externí odkaz:
http://arxiv.org/abs/2401.15730
Publikováno v:
Applied Mathematical Modelling, 92, 2021,884-904
We consider a generalization of the classical logistic growth model introducing more than one inflection point. The growth, called multi-sigmoidal, is firstly analyzed from a deterministic point of view in order to obtain the main properties of the c
Externí odkaz:
http://arxiv.org/abs/2401.15727
Autor:
Albano, Giuseppina, Giorno, Virginia, Román-Román, Patricia, Román-Román, Sergio, Serrano-Pérez, Juan José, Torres-Ruiz, Francisco
Publikováno v:
Mathematical Biosciences, 328, 108428, 2020
We consider a non homogeneous Gompertz diffusion process whose parameters are modified by generally time-dependent exogenous factors included in the infinitesimal moments. The proposed model is able to describe tumor dynamics under the effect of anti
Externí odkaz:
http://arxiv.org/abs/2401.15382