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A higher-order singularity subtraction technique for the discretization of singular integral operators on curved surfaces

This note is about promoting singularity subtraction as a helpful tool in the discretization of singular integral operators on curved surfaces. Singular and nearly singular kernels are expanded in series whose terms are integrated on parametrically rectangular regions using high-order product integration, thereby reducing the need for spatial adaptivity and precomputed weights. A simple scheme is

Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae

Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae The frequencies of females, hermaphrodites and partially male-sterile (PMS) genets of Glechoma hederacea were estimated in natural populations in S Sweden. The frequency of females and PMS genets in natural populations varied from 0 to 100%. The temporal and spatial variation in stamen fertility in

Till främmande land

Swedish travellers during 19th century through the eyes the artist Egron Lundgren.

Dynamic characterization of elastomers using impact testing

Dynamic characterization of elastomers, i.e. laboratory testing and fitting of constitutive models, is quite complicated. The demands on the laboratory equipment and the skill of the personal handling the test equipment are high. Stationary harmonic testing is an established method for evaluating dynamic properties of elastomers. However, it is demanding experimentally when it comes to high freque

Privacy, Surveillance and Digital Trust in the American Case

While generally kept out of sight, government surveillance ostensibly to ensure the security of the state from threats (both foreign and domestic) is a hallmark of the American national security state. What types of surveillance are legally allowable is constantly contested as new technologies emerge that must be tested against American constitutional principles and international law. In the wake