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The main goal of this paper is to establish general constitutive relations for the electromagnetic fields E,D,B and H in a time domain setting. The four basic assumptions of the medium are linearity, invariance to time translations, causality and continuity. These four assumptions imply that the constitutive relations are convolutions of Riemann-Stieltjes type. A review of the classifi- cation of
A number of minimal problems of structure from motion for cameras with radial distortion have recently been studied and solved in some cases. These problems are known to be numerically very challenging and in several cases there exist no known practical algorithm yielding solutions in floating point arithmetic. We make some crucial observations concerning the floating point implementation of Gröbn
Although a substantial body of theoretical as well as empirical work emphasizes the role of the mass media in constructing what could serve as a political public sphere at the European level, strikingly little is known, in qualitative terms, about opinion-making journalists’ underlying views and orientations on the European integration process. The point of departure in the present paper is that o
This paper reflects and analyzes upon a research and pedagocial development project “Gender perspectives on university education and academic disciplines - a pedagogic project for the development of teaching – an intersectional approach (financed by the Swediah Council for Renewal of Higher Education). The project aims to further develop pedagogical models for the inclusion and integration of a “g
In Sweden, there are roughly half a million single family houses that use electric heating for both domestic hot water production and space heating. Since electricity is the most expensive energy source in Sweden, it is interesting to install a high solar fraction solar thermal system to reduce the energy use in these houses. One of the most significant bottlenecks for deployment of solar heating
The base (BOP) and the top (TOP) of the world income pyramid represent the poor people and the people from developed countries, respectively. About two-fifths of the world population can be categorized as poor. Poverty is a trap because children born to poor parents are likely to grow up to be poor adults. In recent years, a poverty reduction approach that combines business development with povert
To compete on a globalized market companies need to constantly improve the performance in their manufacturing systems. Production performance measures can be used for different purposes, by practitioners they are commonly used for follow-up and reporting purposes. Two of the most commonly used performance measures are Overall Equipment Efficiency (OEE) and productivity. Between these two productiv
Abstract in UndeterminedNanoindentation has recently gained attention as a characterization technique for mechanical properties of biological tissues, such as bone, on the sub-micron level. However, optimal methods to characterize viscoelastic properties of bones are yet to be established. This study aimed to compare the time-dependent viscoelastic properties of bone tissue obtained with different
A number of techniques have been proposed to provide run- time performance guarantees while minimizing power consumption. One drawback of existing approaches is that they work only on a fixed set of components (or actuators) that must be specified at design time. If new components become available, these management systems must be redesigned and reimplemented. In this paper, we propose PTRADE, a n
There are many reasons why heat transfer and heat exchangers play a key role in the development of sustainable energy systems as well as in the reduction of emissions and pollutants. In general, all attempts to achieve processes and thermodynamic cycles with high efficiency, low emissions, low costs include heat transfer and heat exchangers to a large extent. It is known that sustainable energy de
