Zobrazeno 1 - 10
of 402
pro vyhledávání: '"Di Crescenzo, Antonio"'
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
This paper analyzes the dynamics of a level-dependent quasi-birth-death process ${\cal X}=\{(I(t),J(t)): t\geq 0\}$, i.e., a bi-variate Markov chain defined on the countable state space $\cup_{i=0}^{\infty} l(i)$ with $l(i)=\{(i,j) : j\in\{0,...,M_i\
Externí odkaz:
http://arxiv.org/abs/2407.10895
Autor:
Di Crescenzo, Antonio, Paraggio, Paola
We consider a two-dimensional time-inhomogeneous birth-death process to model the time-evolution of fake news in a population. The two components of the process represent, respectively, (i) the number of individuals (say spreaders) who know the rumor
Externí odkaz:
http://arxiv.org/abs/2405.06123
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
We investigate the effects of the resetting mechanism to the origin for a random motion on the real line characterized by two alternating velocities $v_1$ and $v_2$. We assume that the sequences of random times concerning the motions along each veloc
Externí odkaz:
http://arxiv.org/abs/2310.10231
Publikováno v:
J. Appl. Probab. 61 (2024) 1485-1501
In this paper, we introduce a bivariate tempered space-fractional Poisson process (BTSFPP) by time-changing the bivariate Poisson process with an independent tempered $\alpha$-stable subordinator. We study its distributional properties and its connec
Externí odkaz:
http://arxiv.org/abs/2309.10566
Given a random variable $X$ and considered a family of its possible distortions, we define two new measures of distance between $X$ and each its distortion. For these distance measures, which are extensions of the Gini's mean difference, conditions a
Externí odkaz:
http://arxiv.org/abs/2307.14307
We introduce and study the cumulative information generating function, which provides a unifying mathematical tool suitable to deal with classical and fractional entropies based on the cumulative distribution function and on the survival function. Sp
Externí odkaz:
http://arxiv.org/abs/2307.14290
We deal with a continuous-time Ehrenfest model defined over an extended star graph, defined as a lattice formed by the integers of $d$ semiaxis joined at the origin. The dynamics on each ray are regulated by linear transition rates, whereas the switc
Externí odkaz:
http://arxiv.org/abs/2201.03977