Användning av cookies

Lunds universitet använder cookies för att se till att webbplatsen fungerar korrekt och för att förbättra din upplevelse.

Läs mer i vår cookiepolicy

Sökresultat

Filtrera

Nollställ filter

Filtyp

Din sökning på "*" gav 545100 sökträffar

Tailoring harmonic radiation to different applications using a genetic algorithm

We use a genetic algorithm to theoretically optimize several properties of extreme ultraviolet (XUV) radiation, generated as high-order harmonics in xenon and argon. We maximize the harmonic pulse energy, minimize the pulse duration or optimize the temporal coherence by varying at the same time two or three parameters that are easily accessible in experiments, related to the characteristics of the

Mördarjakt i Ystad

The actual place for the murder cases is the small town Ystad in the south of Sweden. This is the scene for the films and books about the police inspector Kurt Wallander, created by the Swedish author and playwright Henning Mankell. Ystad is also the place where a new regional centre for film production is situated, and the Wallander movies play an important part in the economic conditions of this

Humanism och historiesyn i Kai Söderhjelms historiska barn- och ungdomsböcker

Kai Söderhjelm (b. 1918 in Helsinki, d. 1996 in Gothenburg) belonged to a Finland-Swedish cultural family, and was for many years an important and valuable figure in the intellectual life of Sweden. Söderhjelm’s authorship follows the same clear thematic lines from his first book, Rid mot nordväst (1948; Ride to the northwest), to his last, Okänt land (1993; Unknown land). These themes are peace,

Extreme Risks During the U. S. Financial Crisis: An Empirical Study of the Credit Default Swap Market

In this paper we focus on the many extreme credit default swap spread movements observed during the recent credit crisis. We find that the tails of the spread (and price) change distribution differ significantly from those of the normal distribution even for diversified credit derivatives portfolios. Particular focus is put on the sudden shift in the behavior of the credit default swap market in t

A chip for linearization of RF power amplifiers using predistortion based on a bit-parallel complex multiplier

This paper presents a custom chip for linearization of RF power amplifiers using digital predistortion. The chip has been implemented in a standard digital 0.8 mu m CMOS process with standard static cells and single-phase clocking. A systolic complex multiplier based on distributed arithmetic constitutes the core of the chip. The nonlinear function is realized with a look-up table containing compl