In the realm of the Riordan group, we consider the characterization of Riordan arrays by means of the Aand Z-sequences. It corresponds to a horizontal construction of a Riordan array, whereas the traditional approach is through column generating functions. We show how the Aand Z-sequences of the product of two Riordan arrays are derived from those of the two factors; similar results are obtaine...

This paper is an attempt to systematically present the problem of various N-person Prisoners’ Dilemma games and some of their possible solutions. 13 characteristics of the game are discussed. The role of payoff curves, personalities, and neighborhood is investigated. Experiments are performed with a new simulation tool for multi-agent Prisoners’ Dilemma games. Investigations of realistic situat...

Optimizing group success is challenging for multi-robot systems, especially for large systems such as robot swarms where even simple individual interaction rules can lead to complex group behavior. Studies of natural systems have shown that heterogeneous groups can outperform homogeneous groups, especially when individual differences lead to role or niche specialization. This happens even when ...

–In the human thalamic ventralis lateralis nucleus the responses of 184 single units to verbally ordered voluntary movements and some somatosensory stimulations were studied by microelectrode recording technique during 38 stereotactic operations on parkinsonian patients. The tests were carried out on the same previously examined population of neurons classified into two groups, named Aand B-typ...

The evolution and equilibrium morphology of Si~100! with 0.1 monolayer of adsorbed Cl was studied at 700 K with variable temperature scanning tunneling microscopy. Chlorine caused surface roughening with monolayer pits and regrowth islands. The aspect ratio of these features then increased with their size because of the surface-stress anisotropy. By analyzing the equilibrium feature shape as a ...

This paper presents a novel formalization of temporal notions and their classification. First, objective and subjective time perceptions are discussed from a philosophical and logical viewpoint. Then, all objective and subjective temporal concept types are identified, based on McTaggart’s Aand B-series and Priorean tense logic, to which temporal events (or propositions) could be mapped. Time on...

Despite the wide use of personality in understanding human behavior, there is a lack of empirical research relating the commonly agreed personality measurement with travel personality or travel related activities. In fi lling the knowledge gap, this study aims at exploring the relationship between the Big Five Factors (BFF) of personality and travel personality. Using self-administered question...