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9518 Uppsatser om Discrete event system simulation - Sida 60 av 635
Mätsystem för effektförluster i en högfrekvenstransformator
To measure losses in a transformer with today?s methods is either slow or insecure. There s a new method developed by Alstom that hasn't been actualize in to a test-system and that has been the assignment in this project. The idea is built on a switched system and a CLR- circuit in the resonant frequency. The test-system has a calculated power-loss that make the efficiency to be as high as 99,8% and in reality over 95%.
TOMO Hugglink
Tomo Hugglink (TOMO Skog) is an innovation for harvest and transport of biofuels. The system consists of a truck, a chipping unit and crane mounted on a link and a wood chip trailer. The system works in such a way that the chipping unit is disconnected and placed on the site and wood chips are loaded directly into the wood chip trailer.The aim of this study was:- To examine the performance of the TOMO Hugglink system under different conditions such as the size, placement and quality of the pile.- To calculate the cost per raw ton for two vehicle combinations at different transport distances and to examine the effect of a reduction in set-up time and an increase in load weight.- To identify possible improvements with the TOMO Hugglink system.A time study was conducted within the thesis work to make it possible to determine production and time consumption. In the subsequent economic analysis the cost per tone at different transport distances was calculated for two different lorry concepts. Furthermore the effect of a reduction in set-up time and an increase in load weight was calculated.Under current conditions the utilization of the chipper is low and only 29 % of the total system time is occupied by chipping.
Energiomställningens konflikter : en studie av bergvärmetrenden i Uppsala 2010-2011
Den här studien beskriver en konflikt kring en bergvärmetrend för bostadsrättsföreningar som uppstått i Uppsala under hösten 2010 och våren 2011.
Konfliktens parter är å ena sidan bostadsrättsföreningar som valt att satsa på bergvärme för att i första hand minska sina uppvärmningskostnader från fjärrvärmen. Å andra sidan majoriteten i Uppsala kommuns miljö- och hälsoskyddsnämnd som är oroliga för trendens miljömässiga effekter, framförallt för elförsörjningen, och förespråkar fjärrvärme.
Utifrån två teoretiska perspektiv har jag satt konflikten kring bergvärmetrenden i ett större historiskt och samhälleligt sammanhang. Jag har prövat möjligheten att se konflikten som en konflikt kring fjärrvärme som ett stort tekniskt system med referens till teknikhistorikern Thomas B. Hughes.
Akustiskt åtgärdsprojekt av en rockmusikklubb där live-musik spelas. Vad kan en audionom bidra med?
Introduction: The number of hearing impairments in Sweden is increasing. The largest increase is seen in ages 25-44. There are reasons to believe that these impairments are noise induced. Leisure time noise is not controlled in the same manner that industrial noise is. An ongoing conflict between city council officials and rock club owners, musicians and music event organizers about sound levels at smaller live music clubs exceeding the national sound level restrictions created the need for an acoustic intervention project.
Stockholms blodbad i historieboken: En l?romedelsanalys under perioden 1869 - 1996
This thesis explores in which ways the portrayal of the event known as the Stockholm bloodbath has changed during the period 1869-1996. This is done through textbook analysis. In Sweden, history has been a school subject since the 17th century, and has throughout its history had a formative role in the Swedish school system. In the middle of the 19th century it was specifically stated that the aim was to help students nurture a sense of national pride and love of country. The aim of the study is to investigate how nationally loaded events have been portrayed in text books, as well as if and how the evolution of said textbooks reflect the evolution of the history subject as a whole.
Vaxholmskonflikten och innebörden av solidaritet : En argumentationsanalys av den svenska pressdebatten
The conflict in Vaxholm was an important event since it influenced the view upon the Swedish labour market. The entire Swedish model was questioned and questions about what the concept of solidarity stands for and for whom it is meant arose.The Swedish union, Byggnads, was harshly criticised for having acted in a discriminating fashion towards den Latvian workers and the Latvian company Laval un Partneri. The debate in the media was intense.My intention with this essay was to scrutinise the arguments in one of the most prestigious newspapers in Sweden, Dagens Nyheter, and to put the argumentation into a perspective of solidarity. I wanted to investigate how the different parties argued about solidarity. One of the conclusions I drew was that Byggnads needs to question their definition of solidarity and how they wish to express that in a new world more influenced by globalisation and immigrated labours..
Förändringsstrategier vid övergången till ett kontantlöst banksystem
Title:Change strategies in the transition towards a cashless banking systemLevel:Final assignment for Bachelor Degree in Business AdministrationAuthor:Elin Lånström och Vildana SmailagicSupervisor:Stig SörlingDate:August 2013Aim:In our study, we compare what it is that drives a bank to implement changes in their business, what problems these changes may bring, and how organizations deal with these. We do this by studying how different banks choose to relate to the handling of cash.The questions we ask ourselves are:? What lies behind the decision to make changes in cash management?? How is the change implemented in practice?? What do banks think this change will mean for the future?Method:The study was conducted with the help of a qualitative scientific method. We conducted interviews with representatives of four banks, and made use of secondary data in the form of scientific literature and scientific articles.Result & Conclusions:Organizations implement changes in order to adapt and achieve balance with their environment but also within the organization itself. Our study shows that the decision to introduce cashless branches is mainly a result of banks' efforts to become more cost efficient.
Interacting with EDIT. A Qualitative Study on, and a Re-design of, an Educational Technology System
This thesis aimed to study the interaction between an educational technology system and its users and give suggestions for design improvements. The technology system is called EDIT (Educational Development through Information Technology) and has been developed and applied at Linköping University?s Faculty of Health Science. EDIT supports Problem Based Learning and enables scenarios to be presented through the World Wide Web. The study was divided into two parts.
En förstudie till kvalitetsutveckling på GD-tryck
The print- and mailroom at Gefle Dagblad (GD-tyck) is handling an increasing amount of commercial jobsalong with the newspaper production. Investments have above all been done in the mailroom to be able tooffer commercial costumers a higher degree of finishing and there are plans to expand further in the commercialmarket. GD-tryck is of the opinion that they need to secure the quality of their production to be ableto do such expansion, which is the reason why a quality system of some kind may be appropriate. Howeverthere are no plans to certify such a quality system according to ISO 9001:2000.In this exam report the present methods of working have been analysed from a quality perspective.Suggestions on how GD-tryck should be working with quality development is presented in the fields whereshortage of quality has been discovered. The suggestions taken together do not form a quality system butcan be looked at as ideas of approach to quality fields that have to be developed if a working quality systemshall be accomplished.Many of the quality fields that have been discussed do not have anything to do with technical qualitydirectly but are in some degree requirements for a working quality system.
Utveckling av flödesreaktor : Ett sammarbetesprojekt mellan fakulteten för teknik och naturvetenskap vid Uppsala Universitet och Fagrell produktutveckling AB
This report deals with thecollaborative project between FagrellProdukt Utveckling AB and studentsfrom the Faculty of Science andTechnology at Uppsala University. Theoverall objective of the project wasin addition to developing students'abilities, to help Fagrell withverification and development ofFagrells prototype, Fundamental flowreactor, for flow chemistry. Theuniqueness of Fagrells flow reactor isthat it should be simple andaffordable compared to competing flowreactors in the market.The verification was done bylaboratory and simulation sessions.The verification shows that Fagrellsidea on how to construct a flowreactor is very good.The development included bothtechnology and business. The result ofdevelopments can be helpful for thecommercialization of Fagrell flowreactor..
Anarkistisk klassifikation: förhållandet mellan epistemologi och bibliografisk klassifikation analyserat utifrån Paul Feyerabends anarkistiska teori
The aim of this master?s thesis is to investigate how Paul Feyerabend?s anarchistic theory of knowledge can help our understanding of bibliographical classification and to analyse how epistemological assumptions are manifested in bibliographic classification. Paul Feyerabend?s anarchistic theory of knowledge and science is the theoretical approach of this thesis. The first part of the thesis consists of an introduction to bibliographical classification and epistemology.
Samhällsmoral genom lag? : En sociologisk studie av de viktigaste argumenten för en svensk civilkuragelag
A tragic event in 2012 sparked a debate about the need for a law of civil courage when it became clearthat passivity in situations where people ?s lives are put in danger is not punishable. In this essay based on qualitative interviews with jurists and students of law the issue of civil courage is analyzed with the help of sociological theory. My objective has been to try and find out if a law of civil courage can be motivated with the argument that it would strengthen the public moral. My conclusion is that a law of moral courage is not a suitable way of making people more willing to help others or to strengthen the civil courage or the public moral.
Effektivisering av energianvändningen i en förskola
This rapport contains an examination of the energy consumption of a kindergarten, which areas that have the largest impact on the energy consumption and what can be done to reduce those areas in ways that are relatively easy and profitable. It is also analyzed if it is possible to reduce the energy consumption from today?s consumption to a consumption that fulfils the demands placed on low energy houses by FEBY.The focus has been on reducing the energy consumption of the areas ventilation, heating system and hot water system, since those seemed to be the easiest ones to affect and since the building is quite recently built.There are different kinds of ventilation systems, at the moment the building have a CAV-system, which means that the ventilation is too high during large parts of the day. There are different ways to manage the ventilation system, for example presence detection, humidity sensors, CO2 sensors, temperature sensors and season adjustment. Many of those are in the end dependent on CO2 sensors to guarantee a good indoor climate, therefore the focus have been placed on this system.
Klassificering av processutrustning - en grund för riskbaserat underhåll
In this report a systematic working procedure for risk classification of processing equipment from a maintenance point of view is described. How this system has been worked out is also an important part of the report. The classification system is adapted for use in complex processing plants. Preemraff Göteborg has been subject for the underlying study and application of the system.The system aims to give a good overview of the maintenance related risks at the plant. Furthermore, the analysis result is a good motivation for the suggested maintenance activities and as motivation for extended or decreased maintenance resources in total.
Modularitet och objektorientering : Byggandet av ett program som kan visa en molekyl
The development of IT systems is usually accomplished by some form of system development methodology. It can be performed as the waterfall method, where each phase is completed before the next begins. One of the reasons to follow a development methodology is that the process is more structured, faster and that the product will have higher quality. One risk of not using a system development approach is that the code can be unstructured and difficult to maintain.This paper describes an alternative method in which the development occurred without the use of any system development methodology. This has been possible because there was a clear goal of the program that should be developed.