This publication is part of a project called Direct and Indirect Load Control in Buildings performed at the Division of Energy Economics and Planning, Department of Heat and Power Engineering, Lund University, Sweden. Peak load problems have attracted considerable attention in Sweden during last three winters, caused by a significant decrease in available reserve power, which is a consequence of p

The Swedish Air Navigation Service Provider in cooperation with the University of Lund aims at developing a model for supporting continuous improvements and learning focusing on safety in air traffic control. This paper focuses on relationships between the safety culture and the psychosocial working environment. These areas were studied using questionnaires at the two main air traffic control cent

Liturgi, teologi, liturgireform, kult och skapelse, kyrkosyn, skönhet, ordinarie och extraordinarie form av liturgin

This study concerns text, language, and learning in a linguistically heterogeneous upper secondary class in Sweden where students aged 16 to 17 are studying biology. One starting point for the dissertation is the importance of language in all school subjects. Another premise is that language as a resource for learning and communication is a high challenge for students who are studying through thei

Samhörigheten mellan de nordiska länderna är etablerad sedan länge och det är många som pendlar, flyttar eller gör affärer över gränserna i Norden. Det finns också ett omfattande politiskt och rättsligt samarbete. Trots detta uppstår det ibland juridiska svårigheter, ofta kallade gränshinder, för den som vill röra sig över de nordiska gränserna. Det kan exempelvis handla om problem i anslutning ti

The Swedish Joint Facilities create a common resource system for externalities of the individual property, such as common roads, bridges, residential services (waste disposal, car park, community places), irrigation and drainage schemes, and hunting ground. In a historical perspective, such facilities belonged to the village community, and remained as externalities when the society forced an inter

Popular Abstract in Swedish Den här avhandlingen handlar om kryptering, strömchiffer, metoder för att analysera (knäcka) och konstruera bättre chiffer. Det finns flera olika metoder för att hemliggöra meddelanden. Det klassiska sättet är att två personer som vill kommunicera delar en hemlig nyckel som används för att både kryptera och dekryptera meddelanden. Denna metod kallas symmetrisk krypteriStream ciphers are cryptographic primitives used to ensure privacy in digital communication. In this thesis we focus on stream ciphers built using Linear Feedback Shift Registers (LFSRs). Several different stream ciphers are analysed and new attacks are presented. In addition, two new stream ciphers are presented, both based on the same design. The first attack is performed on SOBER-t16 and SOBER