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In the study of distributed systems, it is of fundamental interest to understand how specifications on local components and interconnections influence global properties of the system. In this paper, we consider linear continuous time systems described by sparse matrices. Properties of interest are stability and quadratic performance specifications such as passivity and input-output gain. In partic
Popular Abstract in Swedish Denna avhandling fokuserar på effekterna av spin-ban växelverkan (SBV) i nanometerstora ferromagnetiska metallpartiklar. SBV kan betraktas som en interaktion mellan två magnetiska moment, varav det ena utgörs av elektronens spin och det andra är orsakat av elektronens egen banrörelse. Banrörelsens bidrag bygger på faktumet att ett magnetiskt moment genereras av elektrisThis thesis is a theoretical investigation of the effects of spin-orbit (SO) interactions in ferromagnetic metal nano-particles. Part I of the thesis is devoted to an elementary introduction of the research field, including recent experimental advances which partly motivated the work presented here. At the core of the thesis lie four original papers, collected in Part II, which are presented and s
In this third chapter of my study on Bruno K. Öijer and intermediality, discuss and describe the research field of intermedia studies. I problematise the dominant focus on art in intermedia studies. I also suggest that intermedial research should be more (than what is the case today) connected to communication theory. I elaborate on some of the most common models and typologies for intermedia stud
This paper discuss electromagnetic compatibility problems in automotive applications where the voltage is controlled by pulse width modulation. Some proposed solutions are presented, and also the results are shown. In order to get a good measure of the efficiency of the different solutions, the radiated emissions from a system composed of a power electronic part with a DC/DC converter and a load a
Next generation wireless systems have to be able to efficiently deal with fast fading environments in order to achieve high spectral efficiency. Using multiple-input multiple-output (MIMO) systems and exploiting receive diversity, their spectral efficiency can be greatly increased. Commonly, the channel is estimated via training symbols, before the data detection is carried out based on the previo
Little is known about pediatric surgical disease in resource-poor countries. This study documents the surgical care of children in central Haiti and demonstrates the influence of the 2010 earthquake on pediatric surgical delivery. METHODS: We conducted a retrospective review of operations performed at Partners in Health/Zanmi Lasante hospitals in central Haiti. RESULTS: Of 2,057 operations perfor
Small scale embedded systems and sensors have become a booming research area over the past few years. One of the primary concerns regarding such systems is small scale and efficient code to facilitate small memory footprint requirements and low power consumption. In the communications sector there has been considerable effort put into reducing the scale of protocol stacks and making them more powe
This paper describes four series of physical model experiments conducted to understand the response of the beach to headland structures. Data sets were generated for testing predictive relationships for sand transport in the presence of waves and an external current and testing of model algorithms for simulating salients and tombolos behind nearshore headland structures. The paper summarizes the e
