Modeling and optimization of complex systems traditionally have required significant programming efforts in order to encode the model dynamics, the cost functions and the constraints in a format suitable for state of the art numerical algorithms. The availability of dedicated languages for physical modeling has made the design process simpler, but often tools have been limited to a particular opti

This thesis evaluates the feasibility of designing a coprocessor to accelerate multimedia functions in the OpenMAX standard. OpenMAX is a new standard from the Khronos group, a member funded industry consortium, to integrate the most popular multimedia functions like MP3, MPEG-4 and H.264 under one roof. It provides royalty-free API that helps in developing and/or accelerating the specified standa

The objective of this paper is to present a generalization of a newly developed physical bound on antennas of arbitrary shape to elliptical polarizations. The new bounds are comparable with the classical limitations for spherical geometries but provide sharper inequalities for other geometrical shapes.

A 12 GHz PLL with digital output phase control has been implemented in a 90 nm CMOS process. It is intended for LO signal generation in integrated phased array transceivers. Locally placed PLLs eliminate the need of long high frequency LO routing to each transceiver in a phased array circuit. Routing losses are thereby reduced and design of integrated phased array transceivers become more modular.

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How do ’clandestine’ asylum seekers experience the Swedish welfare state? How are they located in relation to welfare institutions, civil society, notions of nationhood and gender regimes? These are some questions I discuss in my work. My research project is based on an ethnographic study with ‘clandestine’ asylum seekers (rejected asylum seekers who stay in the country and ‘hide’ from police and

Popular Abstract in Swedish Inom området datorgrafik undersöker man hur virtuella scener kan omvandlas till verklighetstrogna bilder. För interaktiva miljöer, som exempelvis datorspel, måste en ny bild vara genererad och klar att visas på skärmen mellan 30-60 gånger i sekunden för att upplevelsen ska kännas responsiv och för att rörelser ska flyta på ett naturligt sätt. För att datorn ska hinna meThe field of computer graphics refers to the use of computers to generate realistic-looking images from virtual scenes. Graphics processing units use an algorithm known as rasterization to compute images of scenes viewed from a virtual camera. The commonly used pinhole camera model does not account for the imperfections that stem from the physical limitations in real-world cameras. This includes,

This paper presents on-going research on the production of knowledge in contemporary professional digital encyclopaedias. By adopting a theoretical perspective that considers the interplay of humans, non-humans and practices at the same level, it develops further a socio-technical perspective on knowledge production. Methodologically, the project involves an ethnographic study staring from two edi