Results 31 to 40 of about 489,624 (317)

The Lung Vasculature: A Driver or Passenger in Lung Branching Morphogenesis?

Frontiers in Cell and Developmental Biology, 2021
Multiple cellular, biochemical, and physical factors converge to coordinate organogenesis. During embryonic development, several organs such as the lung, salivary glands, mammary glands, and kidneys undergo rapid, but intricate, iterative branching. This
Yelda Pakize Kina, Ali Khadim, Werner Seeger, Elie El Agha   +3 more
doaj   +1 more source

Random ultrametric trees and applications*

ESAIM: Proceedings and Surveys, 2017
Ultrametric trees are trees whose leaves lie at the same distance from the root. They are used to model the genealogy of a population of particles co-existing at the same point in time.
Lambert Amaury
doaj   +1 more source

Quasi-stationary distributions associated with explosive CSBP

, 2013
We characterise all the quasi-stationary distributions and the Q-process associated with a continuous state branching process that explodes in finite time.
Labbé, Cyril
core   +3 more sources

Branching random walks and multi-type contact-processes on the percolation cluster of ${\mathbb{Z}}^{d}$ [PDF]

, 2015
In this paper we prove that, under the assumption of quasi-transitivity, if a branching random walk on ${{\mathbb{Z}}^d}$ survives locally (at arbitrarily large times there are individuals alive at the origin), then so does the same process when ...
Bertacchi, Daniela, Zucca, Fabio
core   +2 more sources

Weibull-type limiting distribution for replicative systems

, 2011
The Weibull function is widely used to describe skew distributions observed in nature. However, the origin of this ubiquity is not always obvious to explain.
Jean-Yves Fortin, Junghyo Jo, M. Y. Choi, O. Kallenberg, T. E. Harris, W. Weibull   +5 more
core   +1 more source

Lower deviation probabilities for supercritical Markov branching processes with immigration

AIMS Mathematics
Let $ \{Z(t); t\geq 0\} $ be a continuous-time supercritical branching process with immigration (MBPI) with the offspring mean $ m(t) $. In this paper, we mainly research the lower deviation probabilities $ {\rm P}(Z(t) = k_t) $ and $ {\rm P}(0\leq Z(t ...
Juan Wang, Chao Peng
doaj   +1 more source

Critical branching processes in a sparse random environment

Modern Stochastics: Theory and Applications, 2023
We introduce a branching process in a sparse random environment as an intermediate model between a Galton–Watson process and a branching process in a random environment.
Dariusz Buraczewski, Congzao Dong, Alexander Iksanov, Alexander Marynych   +3 more
doaj   +1 more source

On subcritical multi-type branching process in random environment [PDF]

Discrete Mathematics & Theoretical Computer Science, 2008
We investigate a multi-type Galton-Watson process in a random environment generated by a sequence of independent identically distributed random variables.
Elena Dyakonova
doaj   +1 more source

Genealogy of catalytic branching models

, 2009
We consider catalytic branching populations. They consist of a catalyst population evolving according to a critical binary branching process in continuous time with a constant branching rate and a reactant population with a branching rate proportional to
Greven, Andreas, Popovic, Lea, Winter, Anita   +2 more
core   +2 more sources

Stochastic hypothesis of transition from inborn neutropenia to AML: Interactions of cell population dynamics and population genetics

Frontiers in Oncology, 2013
We present a stochastic model of driver mutations in the transition from severe congenital neutropenia to myelodysplastic syndrome to acute myeloid leukemia (AML). The model has the form of a multitype branching process.
Marek eKimmel, Seth eCorey
doaj   +1 more source