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Archimedean spiral antenna for underground soil measurements in Greenland

In this paper, we present a thin single-arm Archimedean spiral antenna designed to be used in underground soil measurements to characterize the dielectric properties of soil during freezing and thawing processes. The designed antenna works in low permittivity, low-loss frozen soil as well as in high permittivity, high-loss marshy soil and operates over the frequency range 1–3 GHz. The antennas has

The Universal and the Particularistic. The philosophical projects of two Moroccan philosophers: Muhammad ´Abd al-Jabiri and Taha ´Abd al-Rahman

One of the main themes in modern Islamic debate has been the relationship between universal and cultural particularistic norms regulating human affairs, the sphere which in classical Islamic tradition is designated as mu´amalat. A recurrent topic of contest has been the universal character of international conventions on human rights. In this paper I will discuss two attempts at accommodation by

Information Structures for Scalable Distributed Power Systems

This paper presents principal design structures for scalable distributed power systems (DPS) focusing on information flow and management enabling "plug and produce" capabilities. The purpose is a general structure that should be appropriate independent of system capacity. The main needs in future market and power system requires a feasible solution that is adequate in scalability and flexibility f