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5338 Uppsatser om Electrical Power Systems - Sida 58 av 356
En bakgrund till skadorna på Slussens bärande konstruktioner
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.
Diskret ickelinjär analys av geometriskt föränderliga linsystem
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.
Energikartläggning i Sundbybergs stad
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.
Effektivisering av logistiklösningar : En jämförelse av nya och gamla logistiksystem vid ROT-projekt
A persistent problem in the construction industry is its low margins of profit. It is often difficult to earn money due to low efficiency and high costs. Logistics on the construction site answers for a large amount of these costs and it is therefore of interest to find new, more efficient logistic solutions. The purpose of this thesis is to compare two different logistic systems and further to evaluate which one that is the most efficient and profitable. A comparison is made between the traditional logistic systems used for years and a new logistic system developed by an industry association called BEAst.
Mät och loggningsutrustning för spänningstransienter.
To be able to measure high-surge voltages and transients with short rise times youneed measuring instruments with a high sampling frequency and large Bandwidth.These surges and transients occur primarily at lightning but can also occur at forexample at connecting errors at an electrical switch-gear. This report describes thework with finding two solutions for measuring and log data from these surges andtransients. One temporary solution where a measurement program has beendeveloped. A second solution where different company solutions have been analyzedto decide which fits best. For these measurement solutions two solutions for bringingdown the voltage has been used.
Från distributionsnät till skarvkabel
Denna uppsats handlar om en kurs, vid namn Elkompetens A, en grundläggande, men också behörighetsgivande kurs som ingår i Elprogrammets obligatoriska kurser. Den genomförs vid Carlsunds Utbildningscentrum i Motala på elprogrammets första årskurs.I detta arbete har jag försökt få svar på, vilken av två olika arbetsupplägg, som gav eleverna mest utbyte i form av kunskaper att bygga vidare på i nästkommande årskurser. Den stora skillnaden i uppläggen, är utgångspunkten för kursen. Efterforskningen är i första hand byggd på intervjuer med elever ur två olika årskullar..
Demokrati och Statskapacitet i Latinamerika
This thesis, drawing from several empirical investigations, reaches the conclusion that there seems to be a positive correlation between the level of democracy and the level of state capacity in Latin American countries. This correlation is explained by a hypothesis derived from Rational Choice theory. With some important caveats, this conclusion is then applied to the discussion about democracy as a form of government. Within democracy, the thesis also offers an insight into different electoral systems and its possible implications, mostly on a theoretical level. The thesis only exists in swedish as of yet..
Standardisering av kommunikation och styrning av leverantörer inom Build-to-Print vid BAE Systems
Idag arbetar avdelningen för extern produktion vid BAE Systems Hägglunds med produktions stödjande uppgifter för leverantörer av Build-to-Print komponenter. En allt större del av BAE Systems produkter konstrueras av BAE Systems konstruktörer medan tillverkning genomförs av leverantörer. Denna förändring har skapat ett behov för BAE Systems att kunna stödja leverantörer i produktionsprocessen för att förhindra att kvalitetproblem uppstår. Den produktionsstödjande uppgiften blir också viktig då det finns en vilja på BAE Systems att kunna genomföra kvalitetssäkring hos leverantörer innan ankomst. Dagens arbetsprocess för produktionsstöd har vuxit efter olika leverantörers tillfälliga behov vilket har gjort att inget standardiserat arbets- eller kommunikationssätt finns.
Nyanla?nda invandrares etablering i Sverige : En kritisk diskursanalys av den nya lagen om etableringsinsatser fo?r vissa nyanla?nda invandrare
This thesis is a qualitative study of a new law that was applied in December 2010. The law is called Lagen om etableringsinsatser fo?r vissa nyanla?nda invandrare, and is meant to help newly arrived immigrants that come to Sweden to establish themselves in the Swedish society. The aim of the study is to see what discourses the Swedish government produces as a result of this new law. Interesting for the study is to see what happens in the implementation stage at a local level, in this case in the municipality of O?rnsko?ldsvik.Theoretically and methodologically I emanate from critical discourse theory and institutional theory.
Konstruktion av småsäckstömmare
Scania CV is one of the world's largest truck manufacturer. It is not only the directproduction of vehicles and methods that are important for Scania but also the servicemarket handling spare parts, repairs and workshops. The department Vehicle ServiceInformation construct standard times through work measurement for particularworks in the workshops. The software application STAM is used in the servicemarket to create and store standard times which then are exported to theworkshops' own systems.The purpose of this master thesis is to analyse and evaluate the internal workmeasurement system that includes standard times and the software STAM. Also,based on external analysis and benchmarking of other systems suggest appropriatefuture development within the area for Scania Vehicle Service Information.In order to perform the investigation, interviews and studies have been doneinternally at the departments that are involved in work measurement as well asexternally at Scania workshops.
Riktlinjer för studier av icke-existerande komplexa sociotekniska system : Erfarenheter från en studie av införandet av ombordbaserad helikopter på korvett av Visbyklass
This report consists of a discussion about suitable methods for studying complex sociotechnical systems that are still being developed. There are large economical advantages with studying new systems before they are completely developed since problems can be discovered early and thereby avoided. It is, however, difficult to study developing systems, there are methodological limitations. These limitations are discussed and recommendations for studying non-existing complex sociotechnical systems are presented.The report is based on experiences from a study of the introduction of a shipboard helicopter on the corvettes that the Swedish Armed Forces are developing. A shipboard helicopter implies high requirements on the hosting ship.
Omkonstruktion av testrigg för småskalig ångsmotor
The actual project presents the development of a testing rig for a steam engine. A short overviewabout the development of steam engines is presented, until arriving to the development of thepresent engine, which will require to be tested in different ways.The testing rig studied on this project (based on a Lanchester engine) will be used to testdifferent materials and layouts for the group Piston-Cylinder.The engine is a high performance steam power engine, which is going to have a highpower/dimensions ratio, what will lead to require high performance components and materials.An introduction to the testing rig is presented, and the entire design project is done in order toreplace the disappeared documentation of the current testing rig, built on the 1970?s. Also somemodifications done in the original testing rig are presented, as well as some detected problemsand their possible solutions..
Övervakning och detektering av sprickor i betong med en elektriskt ledande färg
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.
Analys av beställarkrav vid upphandling av entreprenader
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.
Strukturerat lärande genom Action Design Research. En studie om visualisering av behörigheter
As organizations are generating more business intelligence in their systems, more employees need access those systems. As a result some sort of permission management needs to be implemented to ensure the information remain safe. Access Control Matrix (ACM) is one way of managing permissions and is widely used among organizations. The issues that comes with ACM is that the matrix itself gets difficult to manage and overview as its complexity increases with the number of permissions. The study utilizes Action Design Research to develop a tool for visualizing permissions.