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During the last years, costs for power interruptions to customers have increased and from 2011 a new legislation will not allow power interruptions longer than 24 hours. Electric power utilities are facing important costs to decrease the likelihood of power interruption in the future. Island operation of distribution systems is not commonly employed in Sweden, also for safety reasons. The penetrat
Epistemic uncertainty has been suggested to be fundamental to human experience. The authors of this paper believe that people need to exercise creativity in their conjectures, drawing upon knowledge and experience, in order to generate solutions to both instrumental and epistemic problems, and encourage higher orders of learning. Innovative methodologies are needed which can provide support for in
Popular Abstract in Swedish Robust konstruktion handlar om hur produkter skall konstrueras för att bli okänsliga mot oväntade störningar och variationer i t.ex. omgivningen under drift. Normalt har detta problem angripits med den sk. Taguchi-metoden, i vilken experiment utförs efter en viss metodik på en prototyp, varefter produktens beteende kartläggs och konstruktionsvariablerna väljs så att ettThe activity of robust design of mechanical products and how it can be accomplished in pre-prototype design phases, is discussed in this thesis. It is advocated that to be fully efficient and effective optimization of product robustness should commence already in the conceptual design phase. Moreover, since product optimization is a process, robust design should be perceived and implemented as a p
This chapter describes small-scale reforming for on-site production of hydrogen. By small scale is meant a production rate higher than 50Nm3h-1. First, an overview of the reformer technology and feedstock options is given and hydrogen purity issues are discussed. Second, examples of suppliers and cost trends are presented. Finally, research related to progress in materials, development of more rob
This is a sketch of the history of conservative thought from the days of the revolutions in France and the US.
This study in contemporary history describes the transformation of the public sphere in Sweden during the period 1969-1999, and analyses the role of information technology and politics in the process. The overall aim of the study is to explain how, and why, the public sphere in Jürgen Habermas sense has deteriorated during a period of rapid technological and political change, when increasing atten
Epitaxial III-V nanowhiskers have been grown with orientation in the [111]B and [100] directions. While the nature of the crystal structure in the (111)B type of whiskers varies more or less at random between hexagonal (wurtzite) and cubic (zincblende) structure, the (100) type whiskers are of single crystal zincblende structure. We show that the bounding surface facets of the whiskers are either
A swirl stabilized flame has been studied numerically using Large Eddy Simulation. The response of the flame to a large swirl number modulation has as been determined. Decreasing the swirl number moderately does not destabilize the flame. Decreasing further the swirl number induces a transition from stabilized to a jet flame with increase in the flame fluctuations. Increasing back the swirl restor
Foreign direct investment has been of large importance in economic growth and global economic integration over the last decades. South East Asia has been part of this development with rapidly increasing inflows of FDI. However, there are large variations over time and between countries in the region as regard to the policies towards FDI, and in actual inflows of FDI. This chapter aims at examining
Emotions at War: Sensibility and emotional strategies among Swedish officers, 1788-1814 This thesis studies the relationship between the emotional sufferings of Swedish officers in wartime during the period 1788-1814 and the various mental strategies they employed in order to deal with those sufferings. The study is positioned within the field of research commonly refered to as the history of em
The people bordering the Arabian Gulf, the Mediterranean Sea and the Red Sea rely more and more on seawater desalination for safe water supply. Desalination has advantages and disadvantages which to a large extent depend on the region, location, technology, impact and amount of fresh water production. In this region, some 60% of all desalination capacity is installed. The three regions areas repre
