Social Evolution and Polymer

Social life, evolution of intelligence, behaviour and human brain size

Social life is one of the most critical factors of the evolution of the behavior of non-human primates and humans. Several factors, such as an increase in brain size, adaptive modules, and grooming, are related to the complexities of social groups. Although some scientists have mentioned foraging as a rival hypothesis for the evolution of behavior, in this research, we tried to investigate the ...

Topology Evolution in Polymer Modification

A recent numerical method has opened new opportunities in multidimensional population balance modeling. Here, this method is applied to a full three-dimensional population balance model (PBM) describing branching topology evolution driven by chain end to backbone coupling. This process is typical for polymer modification reactions, e.g., in polyethylene, where initially linear polymer chains un...

Sex ratios and social evolution

Are there other ways of explaining these behaviours? Spiteful behaviours have sometimes also been interpreted as a form of altruism or indirect altruism. Mutually harmful behaviours are favoured if they result in a benefit for some third party that is sufficiently related to the actor. Here, there is no requirement for negative relatedness to one’s victims, and so a distinction has been made be...

Social evolution and language change

We propose substantive universals in the relationship between social evolution and language change. Social anthropologists have categorized societies into roughly four broad types by social organization: bands, tribes, chiefdoms and states. This classification is evolutionary in the sense that the society types arose in human history in the sequence given above. We compare these society types t...

Structure-property Evolution During Polymer Crystallization