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Batch management systems are traditionally composed of two subparts, one assuring the creation and configuration of the recipes, and the other assuring the execution of the recipes, i.e., driving the equipments to make a product. By reducing the total time needed for producing a product, the market can be reached quicker and more money can (hopefully) be earned. Time to market is an important key

The share of distributed generation (DG) is expected to grow rapidly in near future. In addition to the environmental aspects also the shorter construction period can be considered as a key driving force accelerating the development. However, there are also some severe barriers before wider employment of DG is possible. One of them is the connection to network or grid. Especially when we consider

Popular Abstract in Swedish Globala klimatförändringar, nationell säkerhet och ekonomisk stabilitet är alla starka drivkrafter för utveckling av nya drivmedel. Två intressanta alternativ är vätgas och metangas producerade från förnyelsebara råvaror. Detta kan göras i biologiska processer där bakterier omvandlar socker till vätgas eller metangas. Dessa processer måste dock utvecklas och förbättras A great deal of research is being carried out on the biological production of hydrogen and methane. However, little effort has been devoted to studying the technical and economic feasibility of these processes. The main objective of the work presented in this thesis was to perform techno-economic analyses to improve our understanding of the processes by identifying the bottlenecks, and to provide

Vetenskapligt skrivande är ett viktigt moment i studentens grundutbildning. Skrivandet kräver att studenten ska ange källor på ett korrekt sätt i enlighet med en viss stil. Av erfarenhet konstateras att processen att hantera olika stilar kräver tid. Kritiskt tänkande är en grundläggande förutsättning inom vetenskapligt arbete och kräver i sig inte detaljkunskap kring olika stilars struktur. Dagens

The Object Management Group (OMG) has presented a framework for model driven development: Model Driven Architecture (MDA). The departure point of this paper is an interest in process oriented modeling techniques relevant for a computer independent model in the MDA. We searched for the answer on the question what constitutes a “good” computer independent model (CIM). To get an answer we were using

Shock waves are discontinous solutions to quasi-linear partial differential equations, and can be studied through a singular perturbation known as the vanishing viscosity technique. The vanishing viscosity method is a means of smoothing the shock, and we study the case of electromagnetic waves in bianisotropic materials. We derive the conditions arising from this smoothing procedure for a traveling