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The development of European renewable energy policy – exploring the present and anticipating the future

European renewable energy policy has gone through a remarkable development over the last few years. It has moved from being a predominantly national-level concern with a focus on environmental issues to a top European policy agenda item where security of supply and competitiveness concerns figure with equal prominence. In 2007 and 2008 EU established a very forceful policy framework with ambitiou

Optimal Levels for the Two-phase, Piecewise Constant Mumford-Shah Functional

Recent results have shown that denoising an image with the Rudin, Osher and Fatemi (ROF) total variation model can be accomplished by solving a series of binary optimization problems. We observe that this fact can be used in the other direction. The procedure is applied to the two-phase, piecewise constant Mumford-Shah functional, where an image is approximated with a function taking only two valu

Communication through B2MML - is that possible?

Many of you have certainly heard about the ISA S95 standard, and you know that it treats the subject of how Enterprise/business systems such as e.g., SAP, Baan, Movex etc should be integrated with manufacturing and control systems You might also be aware that of B2MML (Business to Manufacturing Markup Language), a set of XML schemas corresponding to the S95 object models. B2MML is intended to be u

Do Take it Personal: It's Not What You Say, It's Who (and Where) You Are!

Issue management in market-driven software projects is constantly under time pressure. A limited set of developers must share their time between developing features for the next release and resolving reported issues. Project managers need to find the appropriate balance between a high quality product and fast time to market. We study a telecom company in Sweden developing embedded systems for a co

Study on the Level of Confidence for Roll-back Recovery with Checkpointing

Increasing soft error rates for semiconductor devices manufactured in later technologies enforces the use of fault tolerant techniques such as Roll-back Recovery with Checkpointing (RRC). However, RRC introduces time overhead that increases the completion (execution) time. For non-real-time systems, research have focused on optimizing RRC and shown that it is possible to find the optimal number of