The HST has provided visual images of the universe of unprecedented clarity and sensitivity. It is less widely known that the HST/GHRS has provided equally breathtaking views of a different kind Of "universe" - a "spectroscopic universe". Nowhere is this better seen than in the extraordinarily complex and beautiful ultraviolet spectrum of the ultra-sharp-lined, non-magnetic, chemically peculiar (C

Popular Abstract in Swedish Stroke är en heterogen sjukdom som inkluderar främst hjärninfarkt samt hjärn- och hjärnhinneblödningar från sprucken pulsåderbråck. Stroke är den tredje största dödsorsaken i industriländerna efter hjärtinfarkt och cancer. Varje år drabbas t.ex. i USA cirka 700 000 personer av stroke och runt 230 000 av dessa är fatala. Behandlingsmöjligheterna är trots framsteg på senaIncreasing [K+]o is intimately coupled to progressive ischemia and reduced CBF. In isolated cerebral and mesenteric arteries, it was found that significant differences in the vascular responses to [K+]o exist. Among the species studied, human cerebral arteries were the most sensitive artery to increasing [K+]o. Rabbit basilar arteries, denuded from the endothelium, showed increased sensitivity to

We present an estimate for the convergence rate of the Dirichlet-Neumann iteration for the discretized unsteady transmission problem. Specifically, we consider the coupling of two heat equations on two identical squared domains. The Laplacian is discretized by second order central finite differences and the implicit Euler method is used for the time discretization. For the semidiscrete case, Hensh

We show how the best passive approximation to a given target material or structure can be found by convex optimization. The approach is based on a representation of positive real functions, where some of the parameters can be given physical relevance by comparison to low- and high-frequency asymptotics of the material or structure under study. A number of different optimization problems can be for

Many animals use vision to guide their behaviour and to collect relevant information about their environment. The diversity of visual environments and of visually guided tasks has led to a large variety of specialisations of eyes and visual systems. Our knowledge, however, about how the anatomical and physiological properties of eyes and the behavioural strategies of animals relate to the visual s

Denna rapport dokumenterar de föredrag som hölls vid konferensen Kvalitet och kritiskt tänkande som anordnades av Sociologiska institituionen i Lund våren 1997. Syftet med konferensen var att belysa kritiskt tänkande som kvalitetskriterium inom universitetsutbildningen. I skriften reflekterar utbildningsminister Carl Tham över kritiskt tänkande ur ett utbildningspolitiskt perspektiv. Gunilla Svin

In this report we are presenting two decoding algorithms for binary variable-length codes, based on a look-up table approach. This type of algorithms are familiar to software designers, but the authors have not been able to find any scientific material, where the decoding speed is analysed. The algorithms will decode one or several source symbols for each cycle of the algorithm. The look-up table

Bluespec SystemVerilog (BSV) is a declarative hardware description language based on a synthesizable subset of System Verilog. Developing with BSV means so far to use scripts for existing editors, which enable highlighting and seldom support of the BSV compiler. The absence of a real IDE for BSV makes writing programs an inconvenient task. This project tries to improve this by providing an BSV Ec

It is expected that fuel cells will play a significant role in a future sustainable energy system. They are energy efficient, fuel can be produced nearly locally and, when a renewable fuel such as ethanol, methanol and biogas is used, there are no net emissions of greenhouse gases. Fuel cells have during recent years various progresses, but the technology is still in the early phases of developmen