This report describes the building of a computer model that makes it possible to simulate the thermal climate in a greenhouse. The computer model is built on the physical theory of heat exchange that occur in a greenhouse, such as radiation and convective heat exchange. The model also includes the heat storage that is active in a greenhouse.The computer model is used to simulate the thermal climate in a greenhouse under three periods, winter, spring and summer. It also investigates which effect a concrete wall has on the thermal climate in a greenhouse. The purpose of putting a concrete wall in the greenhouse model is to investigate the possibility to store heat during the day and then use this heat when the temperature drops during the night.The result from the simulations shows that a concrete wall levels the big difference in temperature that normally occurs under a day in a greenhouse.

 A villas price depends on several important factors. By statistical data, a mathematical multiple regression model was modeled. The model has important explanatory variables such as living space, renovation year and standard points has been taken into consideration, in order to assess their impact on the final price for private homes.By using a statistical program,Minitab 16, the final model was selected with eight explanatory variables. The regression for this model explains up to 67.3 % of the variation on the final price.The results showed percentage wise that the standard points had the greatest impact on the price, there after renovation year and then living space..

Because of new emission and on board diagnostics legislations, heavy truck manufacturers are facing new challenges when it comes to improving the engines and the control software. Accurate and real time executable engine models are essential in this work. One successful way of lowering the NOx emissions is to use Exhaust Gas Recirculation (EGR). The objective of this thesis is to create a mean value model for Scania's next generation EGR system consisting of a poppet valve and a two stage cooler. The model will be used to extend an existing mean value engine model.

The ability of emigrants to contribute to their homelands through the sending of remittances has been intensely recognised in recent years. This is especially true for developing countries for whom this money is seen to be an important source of funds from abroad. Eritrea is often mentioned in terms of success in the way they have mobilised the capacities of their diaspora. Since the Eritrean independence in1993 adults in the diaspora have been asked to contribute two per cent of their income to the Eritrean state. They have also been asked to make other donations at times of need.

Purpose: The purpose of this thesis is to examine the ERK model's relevance, validity and potential need of development to better reflect how it looks today (2013). Method: The study is conducted through three surveys; the first two were face interviews with companies that sponsor Swedish soccer teams and the third study was conducted with a questionnaire to supporters outside a soccer stadium. Results: A model that would better reflect the reality of today (2013) could contain company pride, chairman?s whim, exposure, relationships and associations..

To enable the enhancement of the driver's environment in a forklift, an alternative form of steering has been evaluated. An earlier concept with a combined driving and steering wheel has been exchanged to a concept with two driving wheels. A link wheel has replaced the combined driving and steering wheel. The steering is done through differentiation of the velocities of the two driving wheels. The scope of this master thesis is to create a simulation model, create a control program and to evaluate the concept of two driving wheels.

There are several competing views on how to best utilize air power. Following his quantitative study of air power, Robert Pape developed a theory which focuses on undermining the target state's military strategy. According to Pape it is possible to explain the outcome as a result of military vulnerability. This essay seeks to determine if Pape's theory can predict the outcome of Operation Unified Protector. By using a mixed methods approach on four hypotheses, it will be determined if the operation was a successful case of coercion, if NATO acted according to Pape's model and whether this achieved the desired effects or not. The results reveal that the theory could not successfully predict the outcome of the conflict.

This essay is a study about school success for immigrant pupils whose ages are between 16 and 19 years when they arrive to Sweden.The purpose of this study is to examine pupils difficulties in the school and the faktors which affect their success in the school and even possibilities which they can be offered by the school.This research carried out at two upper secondary schools in the municipality of ?Södertälje?. The method which I have used is a qualitative research method which depends on interviews.The results of the research shows pupils difficulties and the different faktors which influence their success in the school.My conclusions are that these pupils have many difficulties and to reach a successful schooling, the shcool have to give these pupils a variety of possibilities which builds with pupils self possibilities a foundation for a good and successful schooling.The research also shows that the both schools are not giving enough possibilities to these pupils. The education system in these schools doesn?t fits for multi ? lingual pupils.

The aim of this paper is to clarify the up till now somewhat shady definition of legitimacy, and to investigate what happens to this concept when it is transferred from the boundaries of the nation state to the realms of the international arena. By creating a model of legitimacy from which an institution can be evaluated, the purpose of this paper is to investigate what legitimacy is and how important it is for the actors within the international society. The next step involves evaluating what makes the UN a legitimate institution and how its foundation is affected by the blatant disregard of its authority by one of its? most influential members.The theoretical framework consists of a summary of what contemporary analysts? views of legitimacy are, which I have incorporated into my own institutional model of legitimacy. The role of institutions is central to all aspects of this study.

The building industry are currently going through a huge alteration. The introduction of BIM (Building Information Modeling). Which also implements a lot of new ways of solving problems that building modeling can cause. This report is written for Uppsala University in cooperation with Temagruppen in Uppsala. However, it contains a comparison between two different systems that checks building models.

This thesis deals with the compatibility between analysis software Revit Structure2012 and Robot Structural Analysis 2012. The purpose is to become more aware ofinformation management models to be compatible across different softwareapplications. The structural model is made to be optimal for the compatibility of othersoftware Aim is also to gain an understanding of the transferring methods that exist,and which method is most convenient to use and to examine whether the methodswork in practice. Objective of this project is to make the modeling processtime-efficient for constructors. Models do not need to be structured in severaloccasions in different software; it only needs an optimal model that transfers properlybetween software.The method used in the thesis consist cases where the transferring process isexamined.

The purpose of this thesis has been to develop a tool for modelling and simulating the nuclear plant Ringhals 3. The model should be used to improve the knowledge on the dynamics of the plant. Ringhals 3 is being upgraded to produce more power and a tool for analyzing the new operating conditions is needed.The work in this thesis has consisted of improving and developing an existing model of Ringhals 3 made with the modelling tool Dymola. The model has been validated by comparing the results of a simulated house load transient with data from the actual plant. Validation shows good agreement with data from the real plant.

Organisations tend to focus more and more on product and process development to increase their competitiveness. Several major organisations, among them ABB, have developed models aimed to more effectively control and manage product development processes. ABB is using its standardised model ABB Gate Model for this. The purpose of this thesis is to analyze how the introduction of ABB Gate Model has affected the outcome of decisions and also the decision-making in the product development process. The study is limited to elucidate the version of ABB Gate Model handling product development projects.

This case study explores the question of implementation and steering in a society of governance. As an empirical example, a reform concerning the reception of separated refugee children in Sweden is used. As of the 1st of July 2006 the responsibility for providing housing for separated children lies with the local governments rather than with the Swedish Board of Migration, aiming to improve the children's situation. However, implementing this amendment has turned out to be a harder task than expected. Traditionally, the relationship between state and local actors is seen in terms of state steering or local self-government.

AbstractIt is important to choose which spare parts to keep in stock. With the right spareparts in stock the costs for inventory and production loss will decrease. Cavalieri et al. (2008) highlights that the balance between inventory cost and production loss is underestimated.  It affects the company and must be considered before decision on purchase.The problem with spare engines is that they are all more or less critical for the production. That can be a reason for why no previous research targeting engines and classification of with engine should be kept in stock has been found.