This master thesis was conducted during the spring of 2014 at Atlas Copco Rock Drills AB in Örebro. The purpose of the thesis was to develop a simulation model of the rotation system for a hydraulic rock drill. In the future, the model will be used to investigate the phenomena called ?jerky rotation?. In order to validate the simulation model a test bench was designed and tests were made.

Sveriges riksdag är övertygad om att utsläppen av växthusgaser måste minska för att människans påverkan på klimatsystemet inte blir farlig (Naturvårdsverket, 2011). I Uppsala har kommunfullmäktige beslutat om att de totala utsläppen av växthusgaser per innevånare ska vara 45 % lägre år 2020 jämfört med år 1990 (Uppsala kommun, 2011e). För att bland annat kunna utvärdera och utveckla energisystemanalyser har Uppsala kommun, SLU och Vattenfall ett samarbete kring modellering av Uppsalas energisystem och klimatpåverkan. I detta arbete har programvaran LEAP (the Long range Energy Alternatives Planning system) använts för att utveckla en sådan modell. Modellen innehåller ett nuläge (som speglar Uppsalas energisystem så som det såg ut år 2008-2009), ett referensscenario för möjlig utveckling fram till år 2030, och ett aktörsscenario där specifika åtgärder/mål (från Uppsala kommun och Vattenfall) för att få ned utsläppen av växthusgaser modellerats. Resultaten från modellkörningen visar att kommunens mål om 45 % mindre per capita utsläpp av CO2e år 2020 inte uppnås i vare sig referens- eller aktörsscenariot..

A multivariate cross-sectional model is used in this thesis to proxy for expected earnings and to estimate return on equity for 214 companies over the period 2009-2013, using Swedish data. The model, which has never been tested on Swedish data before, is first confirmed to function as a forecasting model for expected return. Furthermore, the model is evaluated through a comparison with two univariate models based on the assumption that return on equity follows a mean reversion process. Forecast accuracy is calculated as the difference of estimated returns and actual returns. The results show that the univariate models' forecasts are superior to the multivariate model's..

Denna uppsats behandlar ämnet OPS och de kringliggande områden som har varit av intresse för att studera valda delar, av upphandlingen och konstruktionen av samarbetet mellan kommunen och privata aktörer, kring Uppsala Arena. De ämnesområden som aktualiseras i huvudsak är; den kommunala kompetensen, statstöd och formerna för olika typer av upphandling inom EU. Resultatet visar att Arenaprojektet i Uppsala är att betrakta som en byggkoncession. Dessutom har konstaterats att kommunen kan ha agerat utanför den kommunala kompetensen och att stödet mycket väl kan utgöra ett otillbörligt statstöd. Faktumet att Uppsala kommun inte ansökte om godkännande från EU kommissionen för sitt stöd till Arenaprojektet kan ses som en lärdom för andra kommuner som planerar att genomföra liknande projekt, då detta agerande med största sannolikhet avskräcker privata aktörer, med den ökade risk det medför..

This paper describes the development of a simulation model for the ambulance flow in the Västra Götalands-region of Sweden, and an analysis tool for the output of the simulation model. The aim of the simulation model was to be able to evaluate the outcome from changes in the ambulance operations, such as a reorganization of ambulances or an increase in intensity of the ambulance calls. This evaluation is meant to serve as decision support for the strategic planning of the ambulance operations. The analysis tool was developed to visualize the abundant geographical data produced by the simulation model in a meaningful way. The simulation model was validated against historical data which showed that the dispatch time for the highest prioritized ambulance calls corresponds well with historical data.

The reindeer planning system (Renbruksplanen, RBP) is a communication and planning tool designed for Sami groups. A key purpose of this is that it will act as a tool in consultation with other market players, including forestry. Sami groups have asked for a model of how this can be used in a flexible manner. With the Swedish Forest Agency as a project manager, a communication model for how to use the RBP has been designed. It consists of a number of points divided into ?before?, ?during? and ?after? the consultation.

This essay discusses people's perception of what is important for their well-being where they live. The main aim has been to find out what factors in the outdoor environments of the city are appreciated and why they are valued positively. A comparison has been made between Uppsala in Sweden and Tarapoto in Peru to see if, and in that case what, differences can be found in the values of people. I chose to carry out a survey study that got a response rate of 57 persons in Tarapoto and 63 in Uppsala. The results show that there are some common basic values, but on the whole the outdoor environments are valued differently in the two cities. In short, the Peruvians value functionality, cleanliness, small distances to family and service, while the Swedes value a central location and short distances to friends apart from functionality and good service opportunities. Conceivable reasons for this might be for example different cultural prerequisits, material standard and climate. .

This paper describes the development of a simulation model for the ambulance flow in the Västra Götalands-region of Sweden, and an analysis tool for the output of the simulation model. The aim of the simulation model was to be able to evaluate the outcome from changes in the ambulance operations, such as a reorganization of ambulances or an increase in intensity of the ambulance calls. This evaluation is meant to serve as decision support for the strategic planning of the ambulance operations. The analysis tool was developed to visualize the abundant geographical data produced by the simulation model in a meaningful way. The simulation model was validated against historical data which showed that the dispatch time for the highest prioritized ambulance calls corresponds well with historical data.

Syftet med denna studie är att analysera vad det är som påverkar bostadspriserna på Uppsalas bostadsmarknad. Det är spekulanternas önskemål och krav, det vill säga deras betalningsvilja som påverkar priset. Det kan skilja sig mellan olika spekulanter men för det mesta ses ett tydligt mönster. Spekulanter värdesätter t.ex. områden som ligger nära centrum.

Purpose/Aim: This essay seeks to describe in what way different newspapers framed Uppsala Reggaefestival, which is a music festival in Uppsala, Sweden. Not only the local press, but also the framing by national press will be analyzed. Furthermore, it seeks to discuss what causes different frames.Material/Method: The material consist of 96 articles from 4 different newspapers which are being analyzed through a quantitative content analysis method inspired by Melin and Lange, and their ideas of identifying the main message of a text. The media framing of Uppsala Reggaefestival are compared to another similar music festival in Sweden, Arvikafestivalen. By using theories about media framing and media logic the results can, if not explained, at least be discussed.Main results: The study shows that Uppsala Reggaefestival is framed in a way that is focused on the problems within the festival, for example drug abuse.

Many researchers emphasize the increasing strategic importance of supply chain management, but there is still a lack of concrete guidance for managers faced with strategic decisions in supply chain. Within decision-making theories, the rational decision-making model is the most commonly used. This because of its suitable foundation, enabling a structure to the complex decision process. The rational decision-making model is today not developed to include the aspects of strategic decision-making made in supply chain. The purpose of this research is to adjust a structured rational decision-making model, making it applicable for strategic decision-making in supply chain.

Uppsalahem is the leading housing corporation in Uppsala with its over 160 real estate properties. Uppsalahem is owned by the municipality of Uppsala, which has a climate and energy goal that aims for 100 MW of solar energy to be installed in Uppsala by 2030. The 100 MW goal, combined with Uppsalahem?s environmental policy, is a strong incentive to investigate the possibility of installing PV modules on the many available roof areas that Uppsalahem possesses. The objective of this thesis is to create a foundation for future decisions regarding PV systems for Uppsalahem.

Estimation of the variation in the integrated hydraulic conductivity around the Tunåsen infiltration facility - An investigation of the effects of uncertainties in existing informationAlmost half of Sweden?s drinking water volume is produced from groundwater. The main fraction of this is extracted from eskers, some of which allow for very large extraction rates. Despite this, the groundwater volume is not sufficient in some areas. This has led to an extensive use of artificial recharge.In Uppsala, the total volume added through artificial recharge is divided between four infiltration facilities.

This thesis treats the subject of a complete steady state and dynamic model of the VSC-HVDC covering both the AC and DC system-side of the converter. The topology of the model is recreated after the scheduled transmission line in the south of Sweden, called SydVa?stla?nken. The topology covers both a simple two terminal connection as well as a multi-terminal one. This model is to be implemented in the power system simulation program ARISTO.

The purpose of this development project is to create a model for working with a high school project in Electrical and Energy Program. It should be conducted in a form like companies do according to the goals from The Swedish National Agency for Education. In order to fully perform this we use the concept of Young Entrepreneurship. The model is created according to the new conditions from The National Electrical Safety Board. There is now an exception saying that a student during education is released from the demand of employment that is the normal procedure where you are under supervision from a certified electrician. During the project there has been theoretical and practical examinations in order to clear out the advantages and disadvantages using this model, but also to examine whether it is useful in the future and to what extent it can be used. The result indicates that the model is useful and fulfills the goals from The Swedish National Agency for Education but that the model has its limitations and difficulties.