Nowak et al. extended the original Social Impact Theory by taking into account LQGLYLGXDO¶V reciprocal influence on the public, and developed one of the earliest computer simulations in the sociology community to show that more individuals who hold minority opinions would change their opinions towards the majority side than the other way around. In this paper, we extend their work to the contex...

Background: One of the important insights of quasi-species theory is an error-threshold. The error-threshold is the error rate of replication above which the sudden onset of the population delocalization from the fittest genotype occurs despite Darwinian selection; i.e., the break down of evolutionary optimization. However, a recent article by Wilke in this journal, after reviewing the previous...

Social network analysis (SNA) has become an important analytic tool for analyzing terrorist networks, friendly command and control structures, arms trade, biological warfare, the spread of diseases, among other applications. Detecting dynamic changes over time from an SNA perspective, may signal an underlying change within an organization, and may even predict significant events or behaviors. T...