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The present study examined the utility of the Word Fluency Test (WFT) as a frontal-lobe-activating test in brain imaging. Regional cerebral blood flow (rCBF) was measured during rest and during the WFT in 49 healthy volunteers and in 15 patients with frontal lobe dementia (FLD). The results showed a highly significant frontal lobe activation in 85% of the normal subjects. This finding was not rela
Operating criteria for power systems, such as theN−1-criterion, are often based on evaluating whether the system is vulnerable to a specific set of contingencies. Therefore, a major part of power system security is concerned with establishing regions in parameter space where the system is vulnerable to specific contingencies. In this article we exploit the possibility of using Monte Carlo simulati
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Popular Abstract in Swedish Att reducera energianvändningen för belysning i byggnader är viktigt för att uppnå målet att minska koldioxidutsläppen. Ett sätt att nå målet är om vi kan förändra människors beteende vilket kan ge en stor energibesparing. Feedback rörande energianvändning har ofta använts för att förändra beteende, men effektiviteten hos detta tillvägagångssätt är mer ifrågasatt för apThe lowering of energy use from artificial lighting in buildings is vital to reaching the goal of reducing CO2 emissions. Hence, changes in individuals’ behaviours regarding lighting use have received increased attention. Feedback on energy use has often been used to change individuals’ behaviour. However, it is not clear to what extent this approach can be applied for non-residential buildings, w
In this paper several rate R = 2/5 convolutional encoding matrices with four states are used to illustrate how unequal error protection can be achieved for the different positions in the code sequences as well as in the information sequences. Free output- and input-distances and active burst output- and input-distances are computed. Typically a single code cannot combine a large free output- or in
The Bremmer series is used to reduce a complex scattering problem to a sequence of simpler single scattering problems. In the Bremmer series, the wave equation is first decomposed into a coupled system of one-way wave equations. The system is then decoupled into a sequence of one-way wave equations with a fixed point iteration. In this paper, a left symbol representation of the decomposition opera
Issue management, a central part of software maintenance, requires much effort for complex software systems. The continuous inflow of issue reports makes it hard for developers to stay on top of the situation, and the threatening information overload makes activities such as duplicate management, Issue Assignment (IA), and Change Impact Analysis (CIA) tedious and error-prone. Still, most practitio
Jag har analyserat det konstruktiva sambandet i kursen BIMM60 – examensarbete på masternivå i biomedicin. Kursen är den i sista kursen inom masterutbildningen. Eftersom alla biomedicinstudenter enligt utbildningsplanen även går BIMK30 - examensarbete på kandidatnivå i biomedicin är det viktigt att även beakta progressionen mellan dessa kurser. Jag fann en del brister i det konstruktiva sambandet m
Even though PID controllers have been around for a long time, few industrial controllers use derivative action and the remaining PI controllers are often designed with formula-based tuning rules rather than through computer-based optimization. This paper will delve into some of the reasons behind these choices and show potential benefits of instead using software-based PID tuning. Three commonly u
