Mutual coupling is a common problem in the applications of antenna arrays. It significantly affects the operation of almost all types of antenna arrays. Over the past years, there have been many different kinds of methods suggested to decouple (or to compensate for) the mutual coupling effect in antenna arrays. The effectiveness of these methods varied and depended upon the types of antenna arr...

What makes security relations stable and, therefore, conducive to permanent peace? When and why is the peace in a region so stable that the outbreak of a major war is unlikely or perhaps even inconceivable? There are essentially two ways to answer these questions; either a given system must possess necessary structural prerequisites of stability, or the social and cognitive conditions of stabil...

The paper explores the influence of the type of relations among players on cooperation in the Prisoner’s dilemma game. The relations between players are operationalized according to Fiske’s relational models theory (Fiske, 1991): communal sharing, authority ranking, equality matching, and market pricing. This is achieved by using various ways of distributing the total payoff gained by a dyad of...

The success of contract-based multiagent systems relies on agents complying with their commitments. When something goes wrong, it is important to understand what are the commitments’ mutual relations as well as their individual states. Accordingly, we explore how commitments are related through the three-agent commitment delegation operation. We then propose exception monitoring based on such r...

We propose a novel feature selection method based on quadratic mutual information which has its roots in Cauchy–Schwarz divergence and Renyi entropy. The method uses the direct estimation of quadratic mutual information from data samples using Gaussian kernel functions, and can detect second order non-linear relations. Its main advantages are: (i) unified analysis of discrete and continuous dat...