We consider the inherent timeline structure of appearance content in online social networks (OSNs) while studying propagation. model propagation a post/content interest by an appropriate multi-type branching process. The process allows one to predict emergence global macro properties (e.g., spread post network) from laws and parameters that determine local interactions. interactions largely dep...

We propose reactive Turing machines (RTMs), extending classical Turing machines with a process-theoretical notion of interaction. We show that every effective transition system is simulated modulo branching bisimilarity by an RTM, and that every computable transition system with a bounded branching degree is simulated modulo divergencepreserving branching bisimilarity. We conclude from these re...

In finite populations, mutation limitation and genetic drift can hinder evolutionary diversification. We consider the evolution of a quantitative trait in an asexual population whose size can vary and depends explicitly on the trait. Previous work showed that evolutionary branching is certain ("deterministic branching") above a threshold population size, but uncertain ("stochastic branching") b...

The ramosus (rms) mutation (rms1) of pea (Pisum sativum) causes increased branching through modification of graft-transmissible signal(s) produced in rootstock and shoot. Additional grafting techniques have led us to propose that the novel signal regulated by Rms1 moves acropetally in shoots and acts as a branching inhibitor. Epicotyl interstock grafts showed that wild-type (WT) epicotyls graft...

From an analysis of the current world averages of the K→ ν̄l l (γ) and τ→ντ K − branching fractions, we derive, within the framework of type II Higgs doublets models such as the Minimal Supersymmetric Extension of the Standard Model, tanβ/mH < 0.21 GeV at a 90% confidence limit. Submitted to Physics Letters B

Tubular structures are a fundamental anatomic theme recurring in a wide range of animal species. In mammals, tubulogenesis underscores the development of several systems and organs, including the vascular system, the lungs, and the kidneys. All tubular systems are hierarchical, branching into segments of gradually diminishing diameter. There are only 2 cell types that form the lumen of tubular ...

Galton-Watson processes were introduced by Francis Galton in 1889 as a simple mathematical model for the propagation of family names. They were reinvented by Leo Szilard in the late 1930s as models for the proliferation of free neutrons in a nuclear fission reaction. Generalizations of the extinction probability formulas that we shall derive below played a role in the calculation of the critica...

Basidiocarps of species of Armillaria, Russula, Lactarius and  Agaricus with fungal infection were collected from different regions of Iran. Portions of infected carpophores, were taken and cultured on PDA, PCA and MEA. Fungicolous isolates were identified on the basis of morphological characters such as: color and shape of colony, morphology and branching of conidiophores, manner of proliferat...