Search Results - "Spina, Serena"

A generalized Gompertz growth model with applications and related birth-death processes by Asadi, Majid, Di Crescenzo, Antonio, Sajadi, Farkhondeh A., Spina, Serena

“…In this paper, we propose a flexible growth model that constitutes a suitable generalization of the well-known Gompertz model. We perform an analysis of…”
Get full text

Stochastic Growth Models for the Spreading of Fake News by Di Crescenzo, Antonio, Paraggio, Paola, Spina, Serena

“…The propagation of fake news in online social networks nowadays is becoming a critical issue. Consequently, many mathematical models have been proposed to…”
Get full text

The sit up test to exhaustion as a test for muscular endurance evaluation by Bianco, Antonino, Lupo, Corrado, Alesi, Marianna, Spina, Serena, Raccuglia, Margherita, Thomas, Ewan, Paoli, Antonio, Palma, Antonio

“…Aims/Hypothesis The aim of this study was to examine the sit up test to exhaustion as a field test for muscular endurance evaluation in a sample of sedentary…”
Get full text

Analysis of a growth model inspired by Gompertz and Korf laws, and an analogous birth-death process by Di Crescenzo, Antonio, Spina, Serena

“…•A new deterministic growth model similar to the Gompertz and Korf laws.•We study the main properties of the new model.•Some data analytic examples and their…”
Get full text

Exploiting the time-dynamics of news diffusion on the Internet through a generalized Susceptible–Infected model by De Martino, Giuseppe, Spina, Serena

“…We construct a news spreading model with a time dependent contact rate which generalizes the classical Susceptible–Infected model of epidemiology. In…”
Get full text

Rumor spreading models with random denials by Giorno, Virginia, Spina, Serena

“…The concept of denial is introduced on rumor spreading processes. The denials occur with a certain rate and they reset to start the initial situation. A…”
Get full text

Continuous‐time multi‐type Ehrenfest model and related Ornstein–Uhlenbeck diffusion on a star graph by Di Crescenzo, Antonio, Martinucci, Barbara, Spina, Serena

“…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…”
Get full text

Analysis of random walks on a hexagonal lattice by Di Crescenzo, Antonio, Macci, Claudio, Martinucci, Barbara, Spina, Serena

“…Abstract We consider a discrete-time random walk on the nodes of an unbounded hexagonal lattice. We determine the probability generating functions, the…”
Get full text

On the return process with refractoriness for a non-homogeneous Ornstein-Uhlenbeck neuronal model by Giorno, Virginia, Spina, Serena

“…An Ornstein-Uhlenbeck diffusion process is considered as a model for the membrane potential activity of a single neuron. We assume that the neuron is subject…”
Get more information

First-exit-time problems for two-dimensional Wiener and Ornstein-Uhlenbeck processes through time-varying ellipses by Di Crescenzo, Antonio, Giorno, Virginia, Nobile, Amelia G., Spina, Serena

“…We study the first-exit-time problem for the two-dimensional Wiener and Ornstein-Uhlenbeck processes through time-varying ellipses which run according to…”
Get full text

Estimating a non-homogeneous Gompertz process with jumps as model of tumor dynamics by Giorno, Virginia, Román-Román, Patricia, Spina, Serena, Torres-Ruiz, Francisco

“…A non-homogeneous stochastic model based on a Gompertz-type diffusion process with jumps is proposed to describe the evolution of a solid tumor subject to an…”
Get full text

A Stochastic Model of Cancer Growth Subject to an Intermittent Treatment with Combined Effects: Reduction in Tumor Size and Rise in Growth Rate by Spina, Serena, Giorno, Virginia, Román-Román, Patricia, Torres-Ruiz, Francisco

“…A model of cancer growth based on the Gompertz stochastic process with jumps is proposed to analyze the effect of a therapeutic program that provides…”
Get full text

Continuous-time multi-type Ehrenfest model and related Ornstein-Uhlenbeck diffusion on a star graph by Di Crescenzo, Antonio, Martinucci, Barbara, Spina, Serena

“…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…”
Get full text

Analysis of random walks on a hexagonal lattice by Di Crescenzo, Antonio, Macci, Claudio, Martinucci, Barbara, Spina, Serena

“…We consider a discrete-time random walk on the nodes of an unbounded hexagonal lattice. We determine the probability generating functions, the transition…”
Get full text

Analysis of a growth model inspired by Gompertz and Korf laws, and an analogous birth-death process by Di Crescenzo, Antonio, Spina, Serena

“…Mathematical Biosciences (2016), Vol. 282, p. 121-134 We propose a new deterministic growth model which captures certain features of both the Gompertz and Korf…”
Get full text