In this paper the balanced truncation procedureis applied to a time-varying linear system, both in continuous and in discrete time. It is discussed how to obtain the reduced-order systems by using certainprojections instead of direct balancing. An approximative zero-order-hold discretization of continuous-time systems is described, and a new a priori approximation error bound for balanced truncati

Model-based analysis of in-cylinder pressure sensor signals has been a key component for internal combustion engine research, diagnostics and controller development during the past decades. This analysis is often based on simple thermodynamic models of the in-cylinder processes. In order for the analysis to give accurate results, the models need to be sufficiently calibrated. This paper investigat

But almost two years into this diplomatic crisis in Iranian-British ties, the collision course has already started to reverse thanks in important part to the election of centrist President Hassan Rouhani and his government’s determination to mend fences with the west through pursuing a moderate agenda.

Den 1 juli 2010 avkunnade Tribunalen dom i mål T-321/05 AstraZeneca (”AZ”) mot kommissionen.1 I allt väsentligt ger domstolen kommissionen rätt i att AZ missbrukat sin dominerande ställning genom att både vilseleda patentmyndigheter och med otillåtna medel försöka hålla generisk konkurrens och parallellhandel borta från den lukrativa magsårsmarknad som AZ kontrollerade.

A blood treatment apparatus (2) comprising: a blood treatment unit (10); a blood line (20) configured to extract blood from a blood source (21), pass the blood through the blood treatment unit (10) and deliver treated blood to a target vessel (22); and a fluid line (30) configured pass treatment fluid through the blood treatment unit (10) and deliver used treatment fluid to a fluid sink (32). A fl

This paper compares all accident investigation reports covering railway accidents issued by the national investigation boards in Sweden, Norway and Denmark during a two-year period (2008-2009). By using content analysis, units of text describing attributed causes have been selected and categorized as belonging to one of three hierarchical levels; the micro level (technical malfunctioning and human

The paper presents two recently developed, Matlab-based analysis tools for realtime control systems. The first tool, called Jitterbug, is used to compute a performance criterion for a control loop under various timing conditions. The tool makes it easy to quickly judge how sensitive a controller is to implementation effects such as slow sampling, delays, jitter, etc. The second tool, called TrueTi