Using a simulated model of a house consisting of two adjacent rooms, the temperature of the two rooms is controlled with a PI controller and a decoupled PI controller. This is compared to MPC control. In the simulation example here, both the MPC controller and the decoupled PI controller decreased the interaction between the temperature dynamics of the two rooms, as compared to an independent PI c

Tests have been performed on an analogue two-dimensional granular material in a special laboratory apparatus that allows the application of general stress or strain conditions. Digital image correlation of pairs of consecutive photographs taken during the tests has enabled fields of displacement and hence strain to be determined. Thus direct observation of internal displacements and strains has be

A virtual haptic-audio drawing program prototype designed for visually impaired children, has been gradually developed in a design-evaluation loop involving users in five stages. Four qualitative evaluations focused on recognizing drawn shapes and creati

Vår frågeställning i denna artikel är: Hur talar man om etniska grupper så att de andra samtalspartnerna inte uppfattar det sagda som stereotypi och tecken på dålig bildning? Med utgångspunkt i ett svenskt och två tjeckiska material visar vi med en lång rad exempel hur 'vi'&endash;'dom' kontrasten formuleras av talaren och förhandlas vidare med övriga samtalspartner. I samtalsexemplen illustre

After the oil crises in the 1970s, the local government in the town of Enköping in Sweden was cautioned by the local Swedish military regiment to shift towards domestic energy supplies rather than imported fossil fuels. During the 1980s the local energy companies investigated opportunities in bioenergy. In the 1990s the local energy companies and local government developed an innovative bioenergy

Disturbances on utilities, such as steam and cooling water, often cause large economic losses at industrial sites. Utilities are often shared between production areas, and a disturbance on a utility is therefore likely to affect a large part of the production site. In addition, production areas are often coupled by the product at the site. Obtaining a dynamic model of a site, with respect to utili

Solid Oxide Fuel Cells (SOFCs) are widely studied for their advantages specially at high temperatures. The microscopic chemical reactions that occur in the cells have a strong influence on the cell performance although not much research has been done in this field yet. In order to do so, a numerical model of the microstructure of the electrodes, where the reactions take place, is needed. Different