The model presented in this paper is applied to the widespread phenomenon of religious shift, but may be more generally applicable to a variety of competitive social systems. The model allows for either competitive exclusion (a ≥ 1) or stable coexistence (a < 1) in systems composed of two social groups, and makes sense in the context of social networks. A similar model (reference 1) was applied...

This paper examines the role of other-regarding behavior as a mechanism for the establishment and maintenance of cooperation in resource use under variable social and environmental conditions. By coupling resource stock dynamics with social dynamics concerning compliance to a social norm prescribing non-excessive resource extraction in a common pool resource, we show that when reputational cons...

pericardial hemangioma is very rare and their coincidence with other visceral hemamgiomas is exceptional. we are reporting a 72-year-old man with an incidentally discovered pericardial hemangioma during coronary artery bypass graft (cabg) and mitral valve replacement surgery and a prior history of multiple hepatic cavernous hemangiomas. this case has been reported due to its extreme rarity. to ...

We have studied an evolutionary game with spatially arranged players who can choose one of the two strategies (named cooperation and defection for social dilemmas) when playing with their neighbors. In addition to the application of the usual strategies in the present model the players are also characterized by one of the two extreme personal features representing the egoist or fraternal behavi...

Individual learning and social learning are two primary abilities supporting cultural evolution. Conditions for their evolution have mostly been studied by investigating gene frequency dynamics, which essentially implies constant population size. Predictions from such "static" models may only be of partial relevance to the evolution of advanced individual learning in modern humans, because mode...

The traditional humanism of the twentieth century, inspired by the culture of the book, systematically distanced itself from the new society of digital information; the Internet and tools of information processing revolutionized the world, society during this period developed certain adaptive characteristics based on coexistence (Human Machine), this transformation sets based on the impact of t...

We introduce and study a general model of social network formation and evolution based on the concept of preferential link formation between similar nodes and increased similarity between connected nodes. The model is studied numerically and analytically for three definitions of similarity. In common with real-world social networks, we find coexistence of high and low connectivity phases and hi...