The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication medium is complex and sometimes problematic. This report handles some of the issues and problems that are important to understand when using the grid as a communications medium. Focus is mainly on investigating high frequency distortion in the Kristianstad power grid own by C4energi caused by a frequency converter. Measurements on site are done to investigate signal damping in the grid, different configurations for the frequency converter and signal strength of the PLC-system.

The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication medium is complex and sometimes problematic. This report handles some of the issues and problems that are important to understand when using the grid as a communications medium. Focus is mainly on investigating high frequency distortion in the Kristianstad power grid own by C4energi caused by a frequency converter. Measurements on site are done to investigate signal damping in the grid, different configurations for the frequency converter and signal strength of the PLC-system.

The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication medium is complex and sometimes problematic. This report handles some of the issues and problems that are important to understand when using the grid as a communications medium. Focus is mainly on investigating high frequency distortion in the Kristianstad power grid own by C4energi caused by a frequency converter. Measurements on site are done to investigate signal damping in the grid, different configurations for the frequency converter and signal strength of the PLC-system.

The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication medium is complex and sometimes problematic. This report handles some of the issues and problems that are important to understand when using the grid as a communications medium. Focus is mainly on investigating high frequency distortion in the Kristianstad power grid own by C4energi caused by a frequency converter. Measurements on site are done to investigate signal damping in the grid, different configurations for the frequency converter and signal strength of the PLC-system.

The objective of this thesis was to get more knowledge about how to design a dairy farm reducing the working hours and the work tasks whit high work load. I will try to reduce the working hours and the tasks whit high work load on my own farm witch I am about inherit. Today, the old stanchion barn has room for about 60 cows and 74 young cattle and need two men to run it every day. The total acre is 188 hectare, 100 hectare forest, 65 hectare farmlands and 23 hectare natural pasture. I have studied two solutions. In the first solution, I will use my old barn for young cattle and build a new barn for the cows.

Målet för detta examensarbete har varit att förbättra driften av en motkolvs tvåtaktsmotormed HCCI-förbränning. Huvudfokus för arbetet har varit på gasväxlingsprocessen, dåfrämst avgasprocessen.Motorn har studerats med utgångspunkt från hur en tvåtakts Otto-cykel fungerar.Gasväxlingsprocessen i tvåtaktsmotorer kännetecknas av behovet av att snabbt få ut denförbrända gasen och införa ny blandning vid varje expansionstakt, samt avsaknaden avventiler. Behovet att kunna kontrollera gasflödet genom cylindern ger upphov till två avde mest karaktäristiska systemen på tvåtaktsmotorer: spolpump samt avgaspipa.Utformningen och genomförandet av dessa två system har skapat ett flertal uppgifter somdet varit nödvändigt att lösa: porttider har uppmätts, ett luftintag med trycksatt luft harbyggts för att kunna ändra förhållandet på insugningsluften. Olika insprutningssystem harockså testats.Slutligen har en avgaspipa installerats och trimmats in. Utifrån målsättningen, så har ettlogiskt sätt att angripa problemet gjorts:? Beteende hos kompressibelt gasflöde i HCCI-motorns kanaler har studerats.? Avgasrörets dimension och dess påverkan på motor prestanda har undersöktsgenom att prova olika utformningar på avgasröret.? Experimentella observationer av tryckpulsationer i avgasflöden har gjorts för attkunna gör finjusteringar..

Syftet med studien var att undersöka livskvaliteten hos barn och ungdomar med cerebral pares. 56 barn och ungdomar med cerebral pares i åldern 10-18 år med Gross Motor Function Classification system (GMFCS) tillhörighet I-III, som gick i grundskola, grundsärskola eller gymnasieskola och som erbjöds insatser från Skånes 11 olika barn- och ungdomshabiliteringar har undersökts via en enkät: Child Health Questionnaire (CHQ-87).CHQ-87 är ett självskattningsformulär bestående av 87 frågor, indelade i två huvudområden som tillsammans täcker individens fysiska och psykosociala hälsa. Enkäten skickades ut per brev under våren 2008. Totalt skickade 167 enkäter ut och 56 enkäter inkom besvarade.Resultatet visar ingen signifikant skillnad mellan den fysiska och den psykosociala hälsan. Skolsituationen och kamratrelationer upplevs positivt av flertalet som svarade och merparten svarar att de har det bra i sina familjer.

A new FPGA suitable for space applications has just reached the market. To investigate whether there are any possible flaws or limitations similar to those previously seen on FPGAs, an evaluation has to be done. This master thesis contains the evaluation of this new radhard FPGA with focus on possible design limitations and package related electrical phenomena.Areas evaluated: Ground-/VDD bounce, Cross talk, Rise time sensitivit, Power cycling, Power consumption, Place and route tool, Radiation hardnessThis report contains all steps in the evaluation. From method to measurements, comparisons, theory, results and conclusions. In the evaluation work, special effort has been made to develop designs that really stress the FPGA to find potential problems.

    Syftet med det här arbetet är att undersöka förstaklasslärares uppfattningar om hur motorisk träning hanteras i skolan och vad träningen kan leda till. Av intresse är också att undersöka vilken roll musiken kan spela i den motoriska träningen. Arbetet baseras på en kvalitativ undersökning i form av intervjuer med fem verksamma pedagoger inom grundskolans verksamhet. I bakgrundslitteraturen beskrivs den motoriska utvecklingen, problem som kan uppstå vid brister i motoriken, forskning om motorisk träning samt musikens roll vid motorisk träning. Den valda litteraturen visar på en splittrad syn när det gäller motorikträningens betydelse för barns lärande.

AbstractDancing and the body`s ability to express itself has been an interest of mine for a long time. For that reason I would like to find out more on how you as a pedagogue can work with dancing as a way to develop motoric activity. The purpose of my research is to find out how pree-school-pedagogue`s and sportsteacher`s are working with dancing, and also how children in a pree-school class apprehends the idea of dancing before and after a dancelesson.My question for this paper is:How can dancetutoring in pree-school develop children`s motoric activity?To find out the answer for this question I have also chosen to use relevant litterature within the subject. Since the examination covers only the answers from four pedagogue`s and six children I can not make a generell conclusion that covers all children or pree-schools.

AbstractThe future of ethanol is depending on good solutions for the production. ENA energy power plant produces electrical power and district heating by heating biofuel. By building an integrated bioenergy plant surplus steam could be used to produce ethanol as fuel to vehicle.This would mean that ethanol is produced renewable energy and the energy for the process derives from the surplus of power.  ENA energy, MDH (the University of Mälardalen) and the energy authority has initiated a research project were different bioenergy combinations integrate with existing power plant.  As a part of the project which size an integrated factory should be to gain the best efficiency for the plant was investigated. Consideration will be taken to the cost of the production in order to be competitive to the price of imported ethanol.  Etanolens framtid vilar på bra lösningar för framställning.  I ENA energi kraftverk i Enköping produceras el och fjärrvärme genom eldning av biobränsle.  Genom att bygga ett integrerat bioenergikraftverk där skulle man kunna använda överskottsånga till att framställa etanol som fordonsbränsle.

AbstractThe future of ethanol is depending on good solutions for the production. ENA energy power plant produces electrical power and district heating by heating biofuel. By building an integrated bioenergy plant surplus steam could be used to produce ethanol as fuel to vehicle.This would mean that ethanol is produced renewable energy and the energy for the process derives from the surplus of power.  ENA energy, MDH (the University of Mälardalen) and the energy authority has initiated a research project were different bioenergy combinations integrate with existing power plant.  As a part of the project which size an integrated factory should be to gain the best efficiency for the plant was investigated. Consideration will be taken to the cost of the production in order to be competitive to the price of imported ethanol.  Etanolens framtid vilar på bra lösningar för framställning.  I ENA energi kraftverk i Enköping produceras el och fjärrvärme genom eldning av biobränsle.  Genom att bygga ett integrerat bioenergikraftverk där skulle man kunna använda överskottsånga till att framställa etanol som fordonsbränsle.

AbstractThe future of ethanol is depending on good solutions for the production. ENA energy power plant produces electrical power and district heating by heating biofuel. By building an integrated bioenergy plant surplus steam could be used to produce ethanol as fuel to vehicle.This would mean that ethanol is produced renewable energy and the energy for the process derives from the surplus of power.  ENA energy, MDH (the University of Mälardalen) and the energy authority has initiated a research project were different bioenergy combinations integrate with existing power plant.  As a part of the project which size an integrated factory should be to gain the best efficiency for the plant was investigated. Consideration will be taken to the cost of the production in order to be competitive to the price of imported ethanol.  Etanolens framtid vilar på bra lösningar för framställning.  I ENA energi kraftverk i Enköping produceras el och fjärrvärme genom eldning av biobränsle.  Genom att bygga ett integrerat bioenergikraftverk där skulle man kunna använda överskottsånga till att framställa etanol som fordonsbränsle.

The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication medium is complex and sometimes problematic. This report handles some of the issues and problems that are important to understand when using the grid as a communications medium. Focus is mainly on investigating high frequency distortion in the Kristianstad power grid own by C4energi caused by a frequency converter. Measurements on site are done to investigate signal damping in the grid, different configurations for the frequency converter and signal strength of the PLC-system.

The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication medium is complex and sometimes problematic. This report handles some of the issues and problems that are important to understand when using the grid as a communications medium. Focus is mainly on investigating high frequency distortion in the Kristianstad power grid own by C4energi caused by a frequency converter. Measurements on site are done to investigate signal damping in the grid, different configurations for the frequency converter and signal strength of the PLC-system.