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We study phase-matching conditions for high-order harmonic generation as well as high-order sum- and difference-frequency mixing processes in strong laser fields, using a graphical approach described in Balcou et al (1997 Phys. Rev. A 55 3204-10). This method is based on the analysis of the different quantum paths that contribute, with different phase properties, to the single-atom response. We pr
The classical connectionist models are not well suited to working with data varying over time. According to this, temporal connectionist models have emerged and constitute a continuously growing research field. In this paper we present a novel supervised recurrent neural network architecture (SARASOM) based on the Associative Self-Organizing Map (A-SOM). The A-SOM is a variant of the Self-Organizi
Abstract is not available
Popular Abstract in Swedish Datorgenererade bilder är en viktig del av underhållningsindustrin, som bland annat innefattar spel- och filmindustrin. För att kunna skapa avancerade specialeffekter i filmer samt stora och detaljerade spelvärldar krävs datorprogram som utnyttjar beräkningskraften i dagens datorer på ett effektivt sätt. Bättre och snabbare datorprogram leder ofta till nya användaruppleComputer generated imagery is vital to the entertainment industry in the production of games and films, for example. It is also increasingly important for visualization in design, architecture, engineering, and medicine, to name a few. Improvements to rendering techniques come from a combination of improved algorithms and more powerful hardware. Typically, hardware developments introduce new chall
The low-frequency shot noise properties of two electrostatically coupled semiconductor quantum dot states which are connected to emitter/collector contacts are studied. A master equation approach is used to analyze the bias voltage dependence of the Fano factor as a measure of temporal correlations in tunneling current caused by Pauli’s exclusion principle and the Coulomb interaction. In particula
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The active metabolite of vitamin D, 1,25-(OH)2D3, has immunomodulatory properties in addition to its more established action on bone and calcium metabolism. Recently vitamin D has been proposed as one of several environmental factors responsible for the increase in atopic diseases during the last decades. The objective of this study was to determine whether the estimated dose of dietary vitamin D3
Popular Abstract in Swedish I Ärlighetseffekten. Den litterära självbiografin sedd genom pressen. Fallet La Force des choses av Simone de Beauvoir undersöks den litterära självbiografin som genre sedd genom receptionen i pressen av den tredje delen av Simone de Beauvoirs självbiografi La Force des choses vid utgivningen i Frankrike 1963. Studien innehåller tre huvuddelar som tar upp kommentarerna In light of autobiographical theory, this study deals with the critics' reception of Simone de Beauvoir's La Force des choses when the book was first published in 1963 in France. The three main parts examine the critical comments on the genre, the final controversial words expressing the author's disappointment, and the evaluation of her style. For the latter, Morten Nøjgaard's theory of literary
We have implemented a self-contained package for DNA microarray analysis in R. The package is named aroma and is formerly known as com.braju.sma. The purpose of the package is to provide end-users with easy access to the latest statistical tools and methods, to provide other statisticians with a structured platform to develop and test new analysis methods, and to make our methods available to an a
A major problem in the design of combustion equipment is to prevent the occurrence of combustion instabilities. Combustion instabilities appear as periodic oscillations in pressure and heat release through a feedback mechanism between the fluid dynamics and the combustion process. These oscillations may induce e.g. mechanical vibrations and increased heat transfer, leading to poor performance or e
