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Being there

This paper examines the use of the Internet as experienced by people with significant mobility/physicalimpairments who are accustomed to using computers. The study is based on interviews andfocuses on computer usage in everyday action and interaction. In many cases, the possibilities thatthe computer and Internet offer have meant not only important improvements in quality of life, butfirst-time oc

Temperature control of two interacting rooms with decoupled PI Control

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

Ramadan missförstås

Den muslimska fastemånaden ramadan har just inletts. Att fasta av religiösa skäl kan tyckas svårförståeligt i dagens sekulära svenska samhälle. Risken är att den sekulära livsåskådningen leder till intolerans och utestängande, skriver André Möller och Pierre Wiktorin, religionsantropologer med anknytning till Lunds universitet.

On the complexity of column generation in survivable network design with path-based survivability mechanisms

This paper deals with path-based linear programming formulations in survivable network design. In a recent survey we have investigated the complexity of the column generation problems for a large variety of protection and restoration mechanisms in a single or multiple link failure scenario, and classified them according to their structure. It turned out that all the considered column generation pr