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In this paper a systematic analysis that solves the wave propagation problem in a general bianisotropic, stratified media is presented. The method utilizes the concept of propagators, and the representation of these operators is simpli- fied by introducing the Cayley-Hamilton theorem. The propagators propagate the total tangential electric and magnetic fields in the slab and only outside the slab
With diversified requirements and varying manufacturing environments, the optimal production planning encountered in a steel mill has become more flexible and also complicated. The flexibility provides the operator with auxiliary options to satisfy customer requirements through an implementable integrated production planning. In this paper, a mixed-integer nonlinear programming (MINLP) model is fo
An antenna system is disclosed that includes two or more antennas and an impedance matching network. The antennas of the antenna system are closely separated, such as by a distance of no more than a wavelength of received signals divided by two. The impedance matching network is adapted to respond to and counteract performance degradation resulting from cross coupling between the antennas. Related
In this study, a group of Swedish social media users – politically active as well as “unpolitical” users – are interviewed in focus groups as well as individually about their attitudes towards online political participation, providing a deeper, more informed view of how social media participation works. Sweden, with its high levels of voluntary participation and with an avant-garde position in Int
Drying is an important process in paper manufacturing, where steam heated cylinders are used to dry paper. Control of the moisture content is accomplished by adjusting the steam pressure in the cylinders. This paper presents a nonlinear dynamic model, based on heat and mass balances for steam, cylinder, and paper. It is implemented in the object-oriented modeling language Modelica and is used to e
