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9518 Uppsatser om Discrete event system simulation - Sida 27 av 635
Översvämningsmodellering av ett dagvattensystem
Storm water management has become a more important matter as urban areas are expanding and natural areas are being exploited. As nature landscapes are being converted into hard surface areas storm water flow is affected both in terms of velocity and size. A flow increase can easily result in a flooding if the dimensions of the pipeline system are inadequate. Considering predicted upcoming climate changes, flooding?s may become more common in urban areas in the future.
Dimensionering av hjälptransformator
The aims of the following project has beento make a proposition how to create aspecific kind of transformer. Thefollowing report evaluates the differentimportant variables and contains asuggestion for a possible design. Intheory it's an ordinary transformer that'ssuppose to transform electrical effect toa high voltage line. The design of thetransformer is using an already existingcurrent transformer design and is adjustedto work for it's specific purpose. Theproject also contains the developing of atransformer simulation model that will beused to evaluate and optimize thedimensions of the resulting transformer..
Fundamentala faktorers förklaringsgrad och simuleringsmöjligheter gentemot elspotpriset på Nord Pool : Utsläppsrätternas betydelse för elspotpriset under andra handelsperioden
The purpose of this study is to evaluate the relation between certain chosen fundamental factors (emission trading rights, hydrological balance, interaction with continental Europe, fuel prices) and the spot price at Nord Pool. Particular focus has been put on the trade with emission rights since it is only now their actual impact on electricity prices can be studied. The relationships are measured with regression analysis which includes both R2 and the simulation possibilities of ARX models. The studied period covers 2008 and 2009 with partly daily data and partly weekly data. Owing to the expected higher importance of the fundamentals during the winter months the winter 2008/2009 has been studied separately.
Detektering av mänsklig närvaro i inomhusmiljö
One problem in today?s indoor air quality lies within insufficient ventilation. Dynamic ventilation can be obtained by implementing a Demand-Controlled ventilation (DCV) system. DCV systems adjust the ventilation in a building by calculating the impact made by its? occupants.
Interaktivt visuellt säljstödssystem
The purpose with this study was to elucidate the pros and the cons with a sale support system. This has been narrowed down into two questions: ?What are the pros and cons for a company that have a sale support system? and what are the pros and cons for a company that does not yet have a system?? Configurator that is a sale support system has been studied. It is a system that presents products by accepting different functions, qualities or parts that are possible to match. It can be used in business-to-business or business-to-consumer situations, through different sale channels, namely direct sale, indirect sale and online sale.
Maximerande av ekosystemtj?nster i urbana kulturmilj?er: En fallstudie om tr?dval i Pommerska tomten i Mariestad
The purpose of this work has been to explore what ecosystem services a small green area in an urban
environment can offer and whether specific trees can be used to maximize regulatory ecosystem
services in a cultural-historical environment. Additionally, it investigates whether there is any
difference in ecosystem services depending on whether these trees, or trees that better fit into the
cultural-historical environment, are used. Through simulations and comparisons with existing trees in
Pommerska tomten, Mariestad, Sweden, a pocket park within a national interest area, different
hypothetical tree planting options are analyzed and evaluated. To measure ecosystem services, the
website My-Tree, developed by the US equivalent of the Department of Agriculture, was used. By
inputting data about the tree, such as location, species, vitality, stem diameter, and solar exposure,
My-Tree calculates some of the ecosystem services the tree provides.
SAB-systemet och ämnet religion en studie av ett klassifikationssystems förmåga att klassificera en vetenskaplig discipline.
Classification systems express an idea of the world as it was when the systems was made. If the classification system is not revised there is a possibility that the system will become antique and hard to apply to different subjects. The purpose of this study is to see if the SAB-system is a classification system which shows a reflection of the subject Religion that is equivalent with that of Swedish universities. The ideas which are behind the classification of the subject religion in the SAB-system have been analysed, as well as the structuring of the scientific discipline Religion at the universities. The result will show if the SAB-system can classify the subject religion in a satisfying way at university libraries.
Ett ordersystem för reklamfilm
This report has explored how to design and develop an ordering system for television and DOOH commercials. Usability theories have been considered and also guidlines for system devoloping, this includes the making of a PACT analysis and a demand specifcation. To ensure that the users of the systems are in focus a pre studie has been performed on location of the company which is the intended user of the system. Finally an interactive prototype of an orderingsystem has been created to illustrate the functions and tools which the fnal product should have..
Verksamhetsanpassning av IT-baserat finanssystem
If P&C Insurance Company faces a challenge when their treasury system needs a new interface to a software as a service application. They need a suggestion for configuration for how the system and the application can work together. The work presented in this report is a suggestion for how you can make business configuration of an IT-based Treasury System in general. The exact configuration for the case received from If is presented as a separate report, found in Appendix A and is called the If-report. The If-report presents the suggested technical set-up of the configuration.
Implementation av ett kunskapsbas system för rough set theory med kvantitativa mätningar
This thesis presents the implementation of a knowledge base system for rough sets [Paw92]within the logic programming framework. The combination of rough set theory with logic programming is a novel approach. The presented implementation serves as a prototype system for the ideas presented in [VDM03a, VDM03b]. The system is available at "http://www.ida.liu.se/rkbs". The presented language for describing knowledge in the rough knowledge base caters for implicit definition of rough sets by combining different regions (e.g.
Effekten av förändrade kreditbetyg : En studie på den svenska aktiemarknaden
Bakgrund: Det primära syftet med ett kreditbetyg är att tillhandahålla information till kreditgivare och investerare angående ett företags återbetalningsförmåga. Kreditbetyget baseras både på publik och privat information och bör därför vid publicering påverka priserna på både kreditmarknaden samt aktiemarknaden under förutsättning att dessa är semieffektiva marknader.Syfte: Syftet är att studera hur aktiekurserna för samtliga företag på Stockholmsbörsen, som erhåller kreditbetyg från S&P, påverkas vid en förändring av företagets kreditbetyg samt outlook.Genomförande: Uppsatsens syfte besvaras genom att undersöka aktieavkastningen i samband med publiceringen av ett förändrat kreditbetyg. Vi har använt oss utav en event study för att isolera och testa eventuell abnorm avkastning.Slutsatser: Av de totala antal tester som vi har utfört finner vi att endast en bråkdel av dessa är signifikanta på 10 % eller lägre. För att med säkerhet fastställa att ett förändrat kreditbetyg påverkar aktieavkastning hade en signifikant abnorm avkastning på 1 % nivå önskats för en majoritet av testerna. Således finner vi inte några starka bevis för att en förändring av kreditbetyg påverkar aktiekurser på den svenska marknaden.
Svårigheter med att beskriva tidskontinuerliga styckvis affina system med tidsdiskreta
Vad många inte tänker på då de har ett relativt avancerat olinjärt system som de linjäriserat till ett tidskontinuerligt styckvis affint system är att det inte är helt självklart och enkelt att hantera detta system. Eftersom vi i de flesta fall vill kunna hantera ett angivet system med datorkraft, och därmed måste sampla systemet, behöver vi kunna beskriva ett samplat tidskontinuerligt styckvis affint system med ett tidsdiskret system. Vid första anblicken av detta problem kan det verka ganska enkelt. Vad många gör är helt enkelt att skapa en tidsdiskret beskrivning för varje mod i det styckvis affina systemet var för sig och behålla de gamla modgränserna. Detta visar sig dock kunna ge ett felaktigt uppförande hos systemet.
?Knowing what is going on? : -Tågförares upplevelser av ERTMS
The aims of the following project has beento make a proposition how to create aspecific kind of transformer. Thefollowing report evaluates the differentimportant variables and contains asuggestion for a possible design. Intheory it's an ordinary transformer that'ssuppose to transform electrical effect toa high voltage line. The design of thetransformer is using an already existingcurrent transformer design and is adjustedto work for it's specific purpose. Theproject also contains the developing of atransformer simulation model that will beused to evaluate and optimize thedimensions of the resulting transformer..
Stockholms stolthet: Stockholm Pride : En undersökning om Stockholm Pride festivalens påverkan på Stockholms besöksnäring.
In this thesis the survival and development of a yearly recurring event will be examined. The purpose of this work is to examine how the festival Stockholm Pride has developed and to find out what underlying factors and conditions that lays behind the development. Also being examined is how the event affects Stockholm city?s tourism industry. To be able to fulfill the purpose of the thesis a qualitative research has been used and two persons with allot of knowledge about Stockholm Pride and Stockholm?s tourism industry has been interviewed.
The Podcar Way : hur kan spårtaxi integreras i en urban miljö?
A new system of public transportation that can simplify and shorten the trips made throughout the city, anddo that both cheap and environment-friendly. Sounds like good news. This new system, though, require anall new type of infrastructure, differing from what we are used to see in our cities. Podcar, or PRT, as thesystem is called can become a transport revolution, possibly. If that revolution does happen it is crucial that webeforehand have studied the possible effects it can cause on our city environment, from a spatial point of view.This thesis thoroughly describes the function and essence of the PRT system and presents what is availabletoday and in what forms.