There is an increasing interest in the study of metamaterials and periodic materials across disciplines. These are anisotropic their properties present directionality. For example, wave speed depends on propagation direction. Furthermore, they heterogeneous, directionality spectra. Common approaches to describe anisotropy have been used large-wavelength approximation corresponding static proper...

This paper aims to provide an answer James Woodward’s article “Flagpoles anyone? Causal and explanatory asymmetries”. It will be conjectured that, when causal directionality depends on the experimental design, it is because variables involved are capable of producing changes in each other. exemplified using case ideal gases as opposed flagpole-shadow scenario.

In abstract argumentation, the directionality principle conveys the intuition that, for an unattacked set, the choice of arguments that are part of an extension should only depend on the restriction of the framework to that set. Furthermore, having made such a choice, one should be able to select arguments from the rest of the framework so as to get an extension. In this paper we show how this ...

Switched beam antennas are an attractive extension to indoor wireless LANs due to their increased signal gain in a chosen direction; the gain can be exploited for improving wireless link quality, node localization and increasing spatial reuse. However, indoor environments are susceptible to multipath reflections that may reduce the degree of directionality of the antennas. To this end, in this ...