Sverige är ett av världens mest globaliserade länder och globalisering känns därmed som en självklarhet i dagens samhälle. Att något är en självklarhet behöver dock inte betyda att det är bra, varför det finns anledning till att undersöka vilken effekt globaliseringen egentligen har haft och kan komma att få på den svenska välfärden. Eftersom välfärd ofta mäts som tillväxt i BNP är det också detta mått som används i denna uppsats.  Syftet med denna uppsats är tudelat där den första delen består av att ta fram en modell inne­fattande faktorer av globalisering, som förklarar Sveriges BNP-utveckling mellan åren 1980 och 2008. Den andra delen av syftet är att, genom användande av den framtagna modellen, analysera hur globalisering har påverkat och kan komma att påverka den svenska BNP-tillväxten fram till år 2050.Studiens metod består av en teoretisk och en empirisk del. Det teoretiska momentet utgörs av en litteraturstudie i dels globalisering och dels tillväxt vilken mynnar ut i en Solow-modell med humankapital som är utvidgad med faktorer av globalisering.

Detta är en empirisk studie om konvergerande BNP per capita-utveckling i Östeuropa. Både absolut och betingad konvergens har undersökts. Absolut konvergens innebär att fattigare ekonomier har högre tillväxt än rikare ekonomier. Betingad konvergens innebär att ekonomierna konvergerar mot sin egen jämviktsbana. Resultaten i denna uppsats tyder på att absolut konvergens inte förekommer i Östeuropa under tidsperioden 1990 till 2003.

The economic growth we have experienced the last century is based on limited natural resources. Whether these resources will last for a further economic growth is widely debated. Pessimism and optimism have each been influential philosophies in debate whose opinions can be conceded as two opposing opinions. In this paper we have analyze these opinions from an economics perspective. To study this further, the construction and meaning of the pessimistic and optimistic arguments have been applied implicitly on the Leontief production function and the Solow growth model.

This bachelor thesis examines the relation between countries? degree of economic freedom and their economic performance. Economic freedom as a concept is defined as the degree of market economy within a nation.The variable of measure that is used is the Frasier institute Economic freedom of the world index (EFI). The paper is built upon the Solow growth model and is extended by incorporation of additional variables; among which of course economic freedom. The study is performed through regression analysis, based on the neoclassical model both on rich countries, poor countries and on all investigated countries.Two investigations are performed: i) the impact from economic freedom on countries level of GDP per capita and ii) the impact from economic freedom on the growth rate in GDP per capita.The finding is that economic freedom can be seen as a relevant determinant of differences in GDP per capita growth rates between nations.

The thesis deals with three document retrieval models based on logic: the Boolean model,the fuzzy model and the Van Rijsbergen model.In Chapter 1, the author presents the purpose of the thesis. This is to give the logical foundationof the models, to describe them and to examine them critically. In Chapter 2, some importantnotions in document retrieval are presented. Chapter 3 is devoted to the Boolean model, Chapter4 to the fuzzy model and Chapter 5 to the Van Rijsbergen model.These three chapters are organized in the same way. First, the logical foundation of the modelis given.

Sedan 1996 är HIV/AIDS den främsta dödsorsaken i Botswana och skapar stora sociala och ekonomiska störningar i landet. Trots att sjukdomen i sig inte är ett ekonomiskt fenomen utgör den stora omfattningen ett allvarligt hot för landets ekonomiska utveckling de kommande årtiondena. Den ekonomiska utvecklingen i Botswana var fram till mitten på 1990-talet en av världens snabbaste. Från att ha varit ett av de tio fattigaste länderna i världen utvecklades landet till ett av Afrikas rikaste och klassas nu som ett medelinkomstland. Denna uppsats ska försöka reda ut vilka några av de makroekonomiska konsekvenserna är för ett land där en av fyra bär på den livshotande sjukdomen.

Föreliggande uppsats studerar sambandet mellan ekonomisk tillväxt och koldioxidutsläpp med global uppvärmning som följd. Med hjälp av en utveckling av ?den gröna Solow-modellen? görs en simulering av Sveriges BNP-utveckling från 2005 till 2050 där en variabel för mängden koldioxid förs in. Syftet är att visa på hur koldioxidutsläpp påverkar tillväxten negativt genom att deprecieringen av realkapitalet ökar. Deprecieringen ökar på grund av ökad förslitning som naturkatastrofer, översvämningar och jorderosion medför.

The purpose with this masters thesis was to model the scanner in a system for laser bathymetry. The model was then used to develop a controller for the scanner so a good search pattern was achieved. Two different types of models have been tested, a physical model and a Black Box model of Box Jenkins type. The physical model has been derived from Lagranges equations. Identification experiments have been used to compute the Black Box model and to find the unknown parameters in the physical model.

Evaporation is a part of the chemical recovery department at wood pulping mills. The purpose of evaporation is to remove water from the black liquor, which makes the liquor combustible. The process is very energy demanding, and having a well-functioning model of the system is of greatest interest. The model can then be used to study energy consumption and to test different control strategies. Two models have been developed during the master thesis.

This report describes a synchronous machine model with magnetic saturation in d-axis, neutralconnection and electrical exciter interface for the transient simulator PSCAD/EMTDC. It hasbeen designed and verified in comparison to the regular machine model in EMTDC.The performance of the model is very good when incorporating a linear as well as a saturatedmagnetising inductance. The dynamic deviation is only thousandths to ten thousandths perunit. By using a cubic interpolation of the saturation curve, the model gives a good representationof the saturation effect. The open source code implementation of the synchronousmachine model gives the possibility to easily adapt the model to specific requirements.The derived model makes it possible to simulate a synchronous machine with its excitationsystems, e.g.

The aim of this master thesis was to create a dynamic model for the processes in a solid fuel boiler of the moving grate type. Another aim with the model was to keep it as simple as possible but still able to catch the dynamics of the processes in the bedplate of the boiler. The creation of the model had its origin from drying and combustion equations used in earlier modeling work of boilers. The represented model has been used to simulate different kinds of disturbances in a boiler and different ways to control the boiler. These tests show that controlling a number of parameters in the bed of the boiler is an effective way to keep the grate stable during disturbances.

This master?s thesis describes the development of a model of the catalystsystem aiming at control by an MPC. A well functioning model, which is suitable in control purpose, is important while emission legislation become more and more hard to fulfill for the car manufacturers. Much research has been done in the field of physical modeling of the system, but in this work a linear adaptive time discrete ARX-model is developed and validated.The systems tendency to change its dynamic during usage implies that the model must be adaptive. The developed model proved to be well functioning and shows promising conditions for the MPC design.

This report describes a synchronous machine model with magnetic saturation in d-axis, neutralconnection and electrical exciter interface for the transient simulator PSCAD/EMTDC. It hasbeen designed and verified in comparison to the regular machine model in EMTDC.The performance of the model is very good when incorporating a linear as well as a saturatedmagnetising inductance. The dynamic deviation is only thousandths to ten thousandths perunit. By using a cubic interpolation of the saturation curve, the model gives a good representationof the saturation effect. The open source code implementation of the synchronousmachine model gives the possibility to easily adapt the model to specific requirements.The derived model makes it possible to simulate a synchronous machine with its excitationsystems, e.g.

The purpose of this thesis was to analyse, model and finally generate dynamic vehicular motions in a train. The objective with the analysis was to find important motions for a realistic train experience. The motions from the analysis were then weighted against possibilities for generation in a motion platform.A dynamic motion model was created to model the selected motions. The model was implemented in a simulation environment, more specifically MATLAB/Simulink. The simulation environment was used to simulate the model and to generate outputs to control a motion platform.

This project consists of an adaptation, trial and evaluation of a model for practicing. Based on prior research I created a model aiming mainly to raise a musician?s self- awareness around the different parameters a performance consists of. An additional wish was for it to simultaneously assist the musician in monitoring his or her progress. With video recording and self-evaluation as the two main parts I tried the model by using it over a period of three months.