Oscillation frequency and damping of electro-mechanical modes in a power system have traditionally been determined from events caused by large disturbances such as line switchings or generator tripping. Recent papers have shown the possibility to extract this information during normal operation from measurements of power through, or angle difference across, a transmission line. In this paper these

Popular Abstract in Swedish Allt levande består av celler. Cellen är livets allra minsta byggsten. Cellen har ett hölje som kallas cellmembran. Detta membran skiljer cellens inre som kallas cytosol från omvärlden. I detta cellmembran sitter olika protein inbäddade. Genom dessa protein kommunicerar och utbyter cellen ämnen med sin omgivning. Många av dessa protein är mål för läkemedel och är därförAn improved method for reconstituting membrane proteins into artificial liposomes for quantitative functional analysis is presented. A number of key parameters for reconstitution by detergent removal are assessed in this thesis: The lipid-to-protein ratio, the detergent-to-lipid ratio and the lipid and cholesterol composition. New porphyrin-based pH-probes are evaluated. Based on this systematic,

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Olika former för äldrevårdsförsäkringar har under senare år lyfts fram i debatten och belysts i flera svenska studier och forskningsrapporter. Denna studie har haft som syfte att studera vilka för- och nackdelar som frivilliga tilläggsförsäkringar kan få i svensk äldreomsorg. Studien förväntas bidra till diskussionen om delar av äldreomsorgens finansiering kan överlåtas till individerna själva gen

Semantic role labeling has become a key module of many language processing applications. To build an unrestricted semantic role labeler, the first step is to develop a comprehensive proposition bank. However, building such a bank is a costly enterprise, which has only been achieved for a handful of languages. In this paper, we describe a technique to build proposition banks for new languages using

In this paper we investigate a system for tracking the motion of box jellyfish tripedalia cystophora in a special test setup. The goal is to measure the motor response of the animal given certain visual stimuli. The approach is based on tracking the special sensory structures – the rhopalia – of the box jellyfish from high-speed video sequences. We have focused on a realtime system with simple bui

This paper describes experiences from implementing key parts of a compiler for Modelica, an object-oriented language supporting declarative modeling and simulation of complex physical systems. Our implementation uses the attribute-grammar based tool JastAdd. In particular, we discuss the implementation of Modelica name analysis which is highly context-dependent, type analysis which is based on str