The aim of this study was to develop a load prognosis model for Uppsala district heating system to be used as a tool for heat production optimization. The methodwas to build three models for the different customer types; housing, industry andoffices and then scale them for the total system using data from Uppsala districtheating system. The heat load consists of two parts, one that is temperaturedependent and one that is dependent of the social behavior of the customers. Thetemperature part was modelled with an ARX model using an outdoor temperatureprognosis as input signal. The social behavior part was modelled using the mean ofthe social behavior from some days before and additionally by distinguishing betweenweekdays and weekends.

This Masters thesis concerns epistemology in Knowledge Organization KO, as a field of study in Library and Information Science LIS. Using a theoretical model by Birger Hjørland and foucauldian discourse analysis as springboards, this study analyses three epistemological discourses in the practice of KO. The aim of the study is to show how these discourses are constituted and demarcated in relation to KO, as well as to examine how they fit into Hjørlands model. A brief historical outline of some epistemological trends in LIS is sketched, as well as examples of how different epistemological schools influence different parts of KO, e.g. information retrieval, indexing- and classification theory.

Simulation is a vital tool during development of JAS 39 Gripen, since money and time can be saved.The Auxiliary and Emergency Power System, AEPS, is a subsystem of the secondary power system in Gripen. It has the function of providing the aircraft with electrical and hydraulical power before activation and after deactivation of the main engine. The system also functions as backup in case of a safety critical problem in the main power supply system. The system basically consists of a control unit and an auxiliary gearbox. The gearbox is driven by an air turbine.

This master theses deals with different methods for automatic tuning of the existing controller for external axis. Three methods for automatic tuning have been investigated. Two of these are based on the manuell method used today. The third method is based on optimal placement of the dominant poles. Different sensitivity functions are important for this method.

This study examines if the prediction of cardiovascular disease in hypertensive patients can be improved upon when renal function and microalbuminuria are added to the classical risk factors The predictive capability of a model is measured by discrimination, calibration, reclassification and Harrell's C.The results are ambigious. In most cases, microalbuminuria should be included in the model, but the results regarding the other measures of renal function are varied. Therefore, the selection of risk factors to include in the model depends on which measure of prediction one prioritizes..

The purpose of this comparative study is to investigate if the views of Sayyid Qutb and Tariq Ramadan regarding social structure and religion are possible to unite with western liberal democracy. The basis of the study is the problematizing approaches written by Qutb and Ramadan regarding the possible unity between Islam and democracy. These problematizing approaches are then tested on the political philosophy of liberalism to see if a unity is possible.The result showed that Qutb's view did not meet the criteria of democracy, which wasn't surprising due to his negative views on the system. However, Ramadan's reformist view on Muslim identity did unite with the views of liberal democracy, though questions regarding the possibility of creating and preserving a European Muslim identity in the secular society were immediately brought to attention.The importance in Qutb's view is social equality, unity and submission to God and the importance of Ramadan's view is to create and preserve a European Muslim identity and adapt to the society where you live and participate as a citizen. Qutb's view will not tolerate diversity and one is to keep or convert to the Muslim faith.

This study analyzes the political view of criminality and crime politics in three political parties in the Swedish parliament, Socialdemokraterna, Folkpartiet and Moderaterna. The study seeks to describe which kind of view these parties present on the criminality in our society. The material for this study is the ideologies that the parties descend from which are, socialism, liberalism and conservatism, the political programs of these three parties have also been studied as well as the parties proposals, political documents in the Swedish parliament. The current public debate shows that the crime politics is an attractive question and the parties may seem to have similar proposals on how to lower the criminality in our society. The theory that has been used to describe the results of the study is ?actors and structures? and the results are related to this theory as well as the theory has been used as an instrument to explain and sort the material and the results.The results of the study show that the parties are different in their views on criminality as a problem in our society.

In modern industrial robots the components in the transmission contain nonlinearities. These nonlinearities need to be to estimated either for better control or to use the parameters for diagnosis of the system. There is a lot of work done within system identification and mainly within the field of iterative parameter estimation.This thesis considers recursive grey-box identification for a nonlinear model of the transmission in an industrial robot. The nonlinearities that are identified are friction, spring stiffnes, hysteresis and backlash. These nonlinearities are a part of the models that are presented in this thesis.

I litteraturen beskrivs controllern väldigt olika från författare till författare, vilket kan förklaras med att controllerrollen varierar från företag till företag, därav är controllerns roll väldigt omdiskuterad angående titel, placering i företaget, dess funktion och arbetsuppgifter. Forskare påpekar att detta är ett område som bör studeras mer. I vår uppsats försöker vi återberätta hur controllerfunktionen beskrivs i tre svenska företag: Duni AB, Höganäs AB och Gekås. Tidigare studier angående controllerns relation gentemot sina ovanställda chefer har visat att den ekonomiska information, produkt, controllern arbetar fram inte är tillfredsställande och i värsta fall irrelevant för beslutsfattandet inom verksamheten. Denna uppsats ämnar beskriva framtagningsprocessen av controllerns produkter, mottagarens uppfattning av slutprodukten samt situationen mellan controllern som producent och ekonomichefen som mottagare i de tre undersökta företagen.

In system development it is today increasingly common to use a model-based system development method. These methods that are suited for Agile work with simple and quick updates and implementations of new applications in systems conform to the requirements that are becoming more important today, namely more flexible and less expensive system that still maintain high quality and safety.A company that has been working with this type of system development method for a long time is Genicore AB, which also has developed their own tools and model language in order to better model the information management systems in complex and abstract operations. Genicore AB is trying to spread their method other developers and have therefore taken the initiative to start this study. The method is evaluated and tested by two students with relatively little experience in model-based systems engineering in order to gain a new perspective on how the method functions. The method has been applied to an educational activity in order to test it in a new domain, and this led us to our research question;?What criteria are of particular relevance in the implementation of a MBSD method on on complex businesses??Through literature reviews and interviews, we formed an idea of how model-based system development works from a theoretical perspective, and then continued to the case study conducted on the educational activities at the faculty of IT at University of Gothenburg.

AbstractPurpose:The purpose of the study is to describe the internationalization process of one firm when in a country culturally diverse from the firm?s original market.Methodology/approach:The study is a single case study which examines one firm?s internationalization process when entering the Chinese market. The approach has been an empiric interaction between empirical and theoretical data.Findings:The theory of the Uppsala model was applied to the case-company to test the model?s completeness. The authors found weaknesses and added three more aspects to the model.

This study is an investigation of how fa?adism can be understood as an act of conservation and compensation in Sweden, through the definition of fa?adism as the act of retaining or reconstructing an existing fa?ade with the construction of a new building behind the fa?ade. The study is executed through an investigation and analysis of the definition of fa?adism, arguments for and against fa?adism related to authenticity, and through an analysis of how current legislation, policies and charters regarding conservation and/or compensation can support or counteract fa?adism. The first part of this study is executed through a literature study of fa?adism on an international level.

The view on which kind of fiction that should be mediated to the public through the Swedish public library system has since the late 60´s been dominated by what in this Master?s thesis is called: ´the discourse on quality of literary fiction´. The aim of this thesis is to examine to which extent this discourse still plays an active role in the Swedish public library system or if that discourse has been replaced by a more market-led, demand responsive view, where the features of ´quality´ and ´culture´ have been downplayed and replaced by a ´customer?s service view´ on how and why fiction should be mediated to the public. The methodological and theoretical perspective in this thesis is led by the understanding of the discourse analysis in Michel Foucault?s ´The Archaeology of Knowledge´.

AbstractIn urban societies people spend more and more time indoors, which put great demands on the indoor environment. If the ventilation is to manage the removal of unwanted substances in the indoor air, a good mixing of the air is required. The question arises that, whether the buoyancy forces will counteract a good mixing of the indoor air or not?This report aims to clear up the difficulties whether you need to consider the buoyancy forces or not, when adjusting a ventilation unit. For studying the indoor mixing of the air a two dimensional model is constructed in COMSOL Multiphysics.

The power system modelled in this thesis work has been developed for simulationwhen e.g. the production in some part of the power system is changed. The powersystem has been modelled according to the swing mass of the system, the frequencydependency of the load and the turbine governor. The model determines the systemfrequency, the period of regulation and the power exchange between the differentsubsystems in the Nordic synchronized system.In this model the system frequency is assumed to be the same in all different parts ofthe power system and the voltage conditions in the power system are neglected. Forthat reason power swings does not occur between different subsystems in the powersystem, which usually occur as a result of the swinging connection between thetransmissions line.