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Säpo går i förväg.

Jag får ofta frågan om den här övervakningshysterin som diskuterats högt och ljudligt senaste tiden faktiskt berör gemene man. Det är en bra fråga. Svaret är att det är oklart. Hela övervakningsfrågan är en balansgång mellan sådant som effektivitet i brottsbekämpning och allas vår personliga integritet.

Scattering of transient electromagnetic waves in reciprocal bi-isotropic media

In this paper propagation of transient electromagnetic waves in a reciprocal bi-isotropic medium is presented. The constitutive relations are convolution integrals with two susceptibility kernels that model the medium. The propagation problem is solved by the introduction of a wave-splitting technique. This wave-splitting is used to solve the propagation problem using either an imbedding approach

Jerusalem mitt i byn. Det tidigmedeltida kyrkobyggandet ur rituellt perspektiv.

The stone churches of the early medieval period are commonly supposed to have been built at the instance of society’s upper echelon, the buildingsthemselves being seen as symbolic proclamations of the social hegemony of the class concerned. The present article seeks to broaden the perspective regarding both the prime movers of church building and their motives. The building of a church required th

Development of a Framework for Quality Assurance of Performance-based Fire Safety Designs

In this paper, some fundamental problems concerning the verification of fire safety engineering designs based on performance-based building regulations are discussed. It can be questioned if the approach taken by many practitioners today is sufficient to fulfil the requirements laid out in the building code, i.e. society’s demand for fire safety. Examples of this deficiency are that interdependenc

A Grassmanian approach to the Hankel norm approximation problem

This paper concerns the unifying framework to strictly contractive extension problems, which is usually referred to as the band method. The solution to the so-called strictly contractive extension problem in this abstract framework, when applied to a certain concrete case, yields a complete characterization of solutions to the sub-optimal Nehari problem. The sub-optimal Hankel norm approximation p

Array signal processing with non-ideal uniform circular arrays in correlated signal environments

The Davies transformation is a method to transform the steering vector of a uniform circular array (UCA) to one with Vandermonde form. As such, it allows techniques such as spatial smoothing for direction of arrival (DOA) estimation in a correlated signal environment, developed originally for uniform linear arrays, to be applied to UCAs. However, the Davies transformation can be highly sensitive t