Blocking and persistence

Income Smoothing, Investor Reaction and Earnings Persistence

The main objective of this study was to investigate the effect of income smoothing on investors reaction to Earnings Persistence of companies listed on the Stock Exchange in Tehran. The population of the study was companies listed on the Stock Exchange in Tehran, the sample size due to screening method and after removing outliers is equal to 118 companies. In this study, earnings persistence an...

Blocking and Persistence in the Zero-Temperature Dynamics of Homogeneous and Disordered Ising Models

Blocking and Persistence in the Zero-Temperature Dynamics of Homogeneous and Disordered Ising Models

A “persistence” exponent θ has been extensively used to describe the nonequilibrium dynamics of spin systems following a deep quench: for zero-temperature homogeneous Ising models on the d-dimensional cubic lattice Zd, the fraction p(t) of spins not flipped by time t decays to zero like t−θ(d) for low d; for high d, p(t) may decay to p(∞) > 0, because of “blocking” (but perhaps still like a pow...

Local Persistence and Blocking in the Two-Dimensional Blume–Capel Model

In this paper we study the local persistence of the two–dimensional Blume–Capel Model by extending the concept of Glauber dynamics. We verify that for any value of the ratio α = D/J between anisotropy D and exchange J the persistence shows a power law behavior. In particular for α < 0 we find a persistence exponent θl = 0.2096(13), i.e. in the Ising universality class. For α > 0 (α = 1) we obse...

Jumping species—a mechanism for coronavirus persistence and survival

Zoonotic transmission of novel viruses represents a significant threat to global public health and is fueled by globalization, the loss of natural habitats, and exposure to new hosts. For oronaviruses (CoVs), broad diversity exists within bat populations and uniquely positions them to seed future emergence events. In this review, we explore the host and viral dynamics that shape these CoV popul...