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Higher order hierarchical H(curl) and H(div) Legendre basis functions applied in hybrid FEM-MoM

A hybrid finite element method/method of moments (FEM/MoM) technique is used to analyze the performance of higher order hierarchical Legendre basis functions. The FEM is used to model the interior part of the computational domain and the MoM is used to model the boundaries. Higher order hierarchical H(curl) Legendre basis functions have been applied to represent the electric field in the three dim

High voltage measurement system based on a capacitively coupled Pockels cell

A fiber-optical system for measurements of fast high voltage pulses has been developed. The system is based on capacitively coupled Pockels cell voltage sensor and features excellent rejection of electrical interference, large bandwidth and practically unlimited voltage range. The authors describe the principle of operation and give a preliminary discussion of the performance of the measurement sy

Comparison of resource efficiency of systems for management of toilet waste and organic household waste

Using a system analysis approach compares different systems for handling and treatment of toilet waste and organic household waste. Design issues considered are source separation of urine, use of vacuum toilets and advanced nutrient recovery processes such as Reverse Osmosis (RO). All of the studied systems have low emissions of eutrophy ing compounds. Other environmental effects are mainly relate

Dynamic Dual Decomposition for Distributed Control

We show how dynamic price mechanisms can be used for decomposition and distributed optimization of control systems. A classical method to deal with optimization constraints is Lagrange relaxation, where dual variables are introduced in the optimization objective. When variables of different subproblems are connected by such constraints, the dual variables can be interpreted as prices in a market

Tomorrow is clad in golf shoes, without oil and/or in ruins: Future projections as authority on and off the Scottish North Sea coast

This paper studies the future as “the only field of power, for we can act only on the future” (de Jouvenel 1967:5). As a number of scholars have pointed out (cf. Foucault 1991, Pred 2007) questions of knowledge is integral to political power, and this paper is about the production of knowledge of what can paradoxically not strictly speaking be known – a future space. I focus on how an interplay of