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An effective subdivision algorithm for diffuse scattering of ray tracing

Accurate modeling of electromagnetic wave propagation by means of ray tracing (RT) includes not only specular reflection, penetration through dielectric blocks and diffraction, but also diffuse scattering mechanisms. The accuracy, supported by a precise description of the environment, is achieved at a very high computational complexity. This computational complexity scales directly with the number

Stabilization and projection methods for multibody dynamics

In recent years, there has been growing interest in stabilized index reduction techniques for differential-algebraic equations (DAE) of multibody dynamics. A number of the proposals which incorporate the idea of a projection onto the constraint manifold are discussed. The methods are divided into classes based on whether the projection is performed on the residuals of the discretized DAE or on the

Danska, skånska, svenska: före och efter 1658

Scania became part of Sweden after the peace treaty in Roskilde 1658. The article discusses the linguistic effects of the change in political status. The official written language in the province took over the differentiating features from the Swedish written language quite soon (after 50 years or so) and probably also the spoken urban language was to some extent influenced by Swedish. The dialect