Avoidance and Persistence

Lecture 19: Polymer Models: Persistence and Self-Avoidance

As an example of the type of prediction which can be made using this type of simple model, consider the following experiment: Pull on both ends of a polymer and measure the force f required to stretch it out2 . Note that the force will be given by f = −(∂F/∂R) where F = U − TS is the Helmholtz free energy (T is the temperature, U is the internal energy, and S is the entropy). In the simplest ra...

The Effect of Exerting Adequate Persistence in Collision Avoidance Protocols

Many medium-access control (MAC) protocols based on a collision-avoidance handshake between the sender and the receiver have been proposed for wireless networks. To date, however, the analysis of these protocols has assumed non-persistent strategies in sending control packets for collision avoidance. The persistent strategies discussed in the past for CSMA and CSMA/CD provide performance improv...

Avoidance or Incapacitation: A Discussion on Definition and Validity of Objective Measures of Avoidance, Persistence, and Overactivity.

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...

Lactase non-persistence as a determinant of milk avoidance and calcium intake in children and adolescents

This study examines if lactase non-persistent (LNP) children and adolescents differ from those who are lactase persistent (LP) as regards milk avoidance and Ca intake. We also studied potential differences in anthropometric features related to obesity, and examined if milk avoidance is associated with lactase-persistence status. Additionally, we aimed to determine if heterozygous subjects showe...