Abstract We present the result of a dual modeling of opinion network. The model complements the agentbased opinion models by attaching to the social agent (voters) network a political opinion (party) network having its own intrinsic mechanisms of evolution. These two sub-networks form a global network which can be either isolated from or dependent on the external influence. Basically, the evolu...

Our recent work [28] proposes the DeGroot-Friedkin dynamical model for the analysis4of social influence networks. This dynamical model describes the evolution of self-appraisals in a5group of individuals forming opinions in a sequence of issues. Under a strong connectivity assumption,6the model predicts the existence and semi-global attractivity of equilibrium configurat...

Newborn piglets were removed from their dam and their responses to a variety of sensory stimuli were tested in four experiments. Test stimuli were presented simultaneously in multiple-choice arenas. Piglets allowed to choose among recordings of sow vocalizations, piglet vocalizations or white noise in a 5-min test spent more time in proximity to vocalizations of sows and piglets than near white...

OBJECTIVES After dominance-related encounters, testosterone levels increase in winners and decrease in losers. In humans, many exceptions have been described. It is possible that the complicated patterns in humans result from the methods limitations--measurement of hormone concentrations in simulated competitive events or sport instead in real-life situations. METHODS Here we studied changes ...