Bacterial social interactions drive the emergence of differential spatial colony structures

Emergence of Social Structures via Preferential Selection

We examine a weighted-network multiagent model with preferential selection such that agents choose partners with probability p(w), where w is the number of their past selections. When p(w) increases sublinearly with the number of past selections [p(w)∼w(α),α<1], agents develop a uniform preference for all other agents. At α=1, this state loses stability and more complex structures form. For a s...

the role of task-based techniques on the acquisition of english language structures by the intermediate efl students

this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...

Emergence of Cooperation in the IPD Game using Spatial Interactions

This paper presents a comparative study of two evolving populations, one in a non-spatial environment, and the other in a spatial environment, playing the Iterated Prisoner’s Dilemma. The effect of the environment on the emergence of cooperation is studied. The populations are evolved using a genetic algorithm and the performance of the evolved individuals evaluated against expert and naïve str...

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Emergence of Macro Spatial Structures in Dissipative Cellular Automata