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11687 Uppsatser om System level - Sida 15 av 780

Ingen rök utan eld - Handelseffekter av EU: s tobakspolitik

This thesis examines the impact that the Euoropean Agricultural Policy has had on the tobacco regime during the years from the start of the Common Market Organization for Tobacco in 1970 til the days of today. The Truman method has been employed to estimate the degree of change of trade creation or trade diversion on the domestic market and also on the worldmarket. From these facts an analysis has been made to investigate how and if a new reform of the CMOT will affect the European tobacco market. Through the CMOT, the European Commission has tried to rise the quality level and the prices of raw tobacco growing in Europe. The european market value for tobacco has been rising and a marginal grade of of trade creation within the union and a grade of trade diversion to third countries has been shown since the implementation of the tobacco regime.

Att avstå från folkbibliotek: En kvalitativ studie av informations- och kulturvanor samt distansen till folkbibliotek hos icke-användare

The main purpose of this Master?s thesis is to develop an understanding of why non-users do not use public libraries by studying their information and culture habits and their relationship to public libraries. One of the motivating factors behind this choice is the lack of earlier research on the subject, particularly qualitative research. The theoretical framework is stratified into three associated levels with Brenda Dervin?s sense-making theory on an individual level, Marianne Andersson?s and Dorte Skot-Hansen?s model of the roles of public libraries on an institutional level and Pierre Bourdieu?s theoretical apparatus on a social level.

Utvärdering av ett större bergvärmesystem i en flerbostadsfastighet som har konverterats från fjärrvärme

This master thesis is an in-depth study of an existing heating system at a household cooperative in Uppsala that has been converted from district heating to a bedrock heat pump system. The study focuses on an economical system optimisation of the building?s complete heating system. The aim was to determine how well a heat pump system in large buildings actually work, find out possible ways to optimize the existing system and point out important system parameters for new heat pump installations in larger buildings.The project points out a possible energy cost reduction of 45 % without investment and further cost reductions with equipment investments. A reduction by 30 % is possible by improvements in the regulation system and 15 % is possible by maintaining the brine system.

Lyssna, Tala, Tänka. Övningsteknik ? en huvudfråga?

This thesis is about practising on a different level to get an insight to what techniques might work for me as a double bass player. It is about discovering how to use your brain into playing at your best level. I practised both talking and singing to myself and read a lot about thinking and hearing not only the music but every note before playing. The thesis idea came from not having a technique that worked for me while practising alone. I wondered why it is such a difference between what we do at the lessons and what I do when practising by myself..

Development of Liquid Cooling for PCs

In recent years, existing solutions for cooling personal computer CPUs have been supplemented by a new product category, factory sealed water cooling loops. These systems, consisting of a water block with an integrated pump, a fan and a radiator, perform well compared to the air cooling solutions but are less effective than larger, custom-built water cooling systems.This project aims to explore the most important aspects of a factory sealed system and to identify possible cost-effective enhancements of the performance.The most significant differences between the different groups of water cooling loops are the block design and the pumping power. The performance of both categories is also largely dependent on the fan power, but increasing fan power has a large negative impact on the noise level.Both radiator size and fan model choice appear, in tests, to be relatively unimportant, presuming that the noise level is kept constant. The position and direction of the fan, however, has significant impact on both the temperature and the sound level.Water blocks can be designed in several different ways, both regarding the heatsink design and the flow direction. In simulation, flow with the inlet centered above the heatsink result in considerably lower pressure drop and slightly higher temperatures than flow through the block, for heatsinks with fin arrays.Creating a competitive product in this product segment certainly seems possible, as there are performance-increasing changes to be made that seemingly has little impact on the production cost.

Energieffektivisering av industribelysning : Planering av belysningsanläggning i mekanisk verkstad

In Uppsala, Sweden, Vattenfall has a combined heat and power plant. On the premises there is an engineering workshop with old fluorescent and mercury lamps that need to be replaced. This provides a great opportunity to save energy and money by installing more efficient lighting. The main purpose of this study was to present two functional and energy efficient lighting systems including control system. The lighting systems were designed by investigating the working environment, measuring illuminance and by simulations in the software DIALux.

Faktorer som bidrar till att kursmålen nås för elever med matematiksvårigheter

During my practice as a teacher trainee at an upper secondary school it became clear to me that many pupils had difficulties with mathematics. I was surprised to find that many pupils seemed to get stuck on the level of attainment for the senior level of the nine-year compulsory school. As I have not studied anything about difficulties in Mathematics during my training to become a qualified teacher, I would like to get to know more about this.After studying research done on this subject I made the following approach to the problem:? What fields regarding Mathematics do the pupils themselves find most difficult?? What factors have been contributory causes to these problems?? What are the factors that have helped pupils with difficulties in Mathematics to reach the goals for the syllabuses in Mathematics?The answers to my questionnaire and interviews resulted in the following conclusions:? Pupils find theory of equation and conversion of units as most difficult at senior level of the nine-year compulsory school.? Teaching should be done in special instruction groups to give the pupil the opportunity to develop his/her skills on an individual level.? Pupils find it hard to deal with all moments in Mathematics during the time given for each course.? The pace for teaching Mathematics is too high according to the pupils.? Pupils wish for instructions on a lower level.? There is often a lack of contact between teacher and pupil.? The teacher should use more time to help the pupil receive good self-confidence and increase the motivation for instructions in Mathematics..

Utbredning av akustiska vågor i elastisk platta

Den här rapporten har som syfte att utreda vilket eldistributionssystem för offshoreenheter som sparar mest vikt och utrymme. De två elsystem som jämförs är GVAs standard system och Siemens Blue Drive System. Rapporten innehåller en teoretisk bakgrund för båda systemen och dimensionering av systemens kraftkablar samt beräkning av kabelvikter och komponentvikten för systemen. För att uppskatta kabel- rutter och längder kommer ritningsunderlag för GVAs offshoreenhet 7500 att användas.Resultatet visar att GVAs standard system är det eldistributionssystem som har den lägsta totalvikten med 168 ton, GVAs standard system har en vikt som är 101 ton lägre än Siemens Blue Drive System som har en vikt på är 269 ton. GVAs standard system har en lägre ström vilket gör att ledararean blir mindre och i med det blir kabelvikten mindre.

Användbarhetsfaktorer i ett IT-system som påverkar beslut

IT - systemen har blivit en del i samhället. IT -system används inom olika områden och verksamheter i och med detta så har användbarhets faktorer i IT -system blivit sådan som inte går att bortse ifrån. Det finns många användbarhetsfaktorer som alla skiljer sig mer eller mindre åt. Gemensamt för dem alla är att ett system bör innehålla visa kriterier för användbarhet för att godkännas av användaren då de använder sig av ett IT -system.Det finns en vilja att skapa användbara system för att underlätta för användaren. Visa faktorer i användbarhet i ett IT -system är genom tänkta medan andra behöver förbättras för att anpassa till beslutfattande och ta hänsyn arbetsmiljöaspekter.

Konstruktion av current conveyors via makromodellering

A current conveyor is an active building block that can be used to implement most active and passive components. It differs from the operation amplifier in that it uses current instead of voltage. The current conveyor also has significantly higher voltage gain over a broader frequency range. To simplify the construction of analogue circuits and increase the construction efficiency it is desirable to use a top-down methodology. This means that the whole system is partitioned into a hierarchy of subsystems.

Should I Stay or Should I Go : En studie av relationen mellan de anställdas möjligheter till kompetensutveckling och deras intention att stanna på företaget

The management of information is a significant competitiveness in companies. Companies stored and save information every day, and it is very common to save de information in different sources. This makes de management of information complex. To mange, monitor and analyze the information, companies can use a system called Business Intelligence. BI system is an analytical system that extracts and converts data into useful information that helps employees to make informed decisions.

Komfortsanalys med hänsyn till vibrationer orsakade av människoaktiviteter. : Ett modernt dimensioneringsproblem för huskonstruktörer

Comfort analyses regarding human induced vibrationsIt is not too common among civil engineers in Sweden to perform comfort analyses considering the vibrations caused by human activities. In addition, the Swedish standards lack requirements to be used for comfort analyses in design of floor-systems. The demand for large spans in combination with slender slabs, is today a reason to investigate the floor-system constructions, in order to prevent disturbing vibrations and oscillations.The purpose of this thesis is to create a guide for how a comfort analysis, considering vibrations, should be implemented. Göran Svedenbjörk who is an expert in structural dynamics has been interviewed where he presents his latest project Värtaterminalen and answers some questions about vibrations due to human activities.Floor-systems, consisting of concrete slabs supported by steel or concrete beams, have been investigated with simulations in the finite element program Abaqus. In the simulations, the influence of various factors on the natural frequency of floor-systems and the acceleration level caused by dynamic loads, is studied.

[demos.v1.0] till [demos.v2.0] : En fallstudie av modifierbarhet

This report is an examination paper in computer science at University of Växjö. The report will focus on the possibility to create adaptable systems and to cost calculate the work needed to modify a system to meet new demands. A project [demos] developed by Interactive Institute studio [12-21] in Växjö is the starting point in our work. They have during a period of two years developed a prototype of a system which intends to get youth and democratic selected representatives a communication platform where they may communicate with SMS. Today they are in a position when they want to develop the system for other user groups with slighter different purpose and to do that they need a more flexible system.

Polyakrylsyras förmåga att lösa upp hårt slam från PWR-ånggeneratorer

Den här rapporten har som syfte att utreda vilket eldistributionssystem för offshoreenheter som sparar mest vikt och utrymme. De två elsystem som jämförs är GVAs standard system och Siemens Blue Drive System. Rapporten innehåller en teoretisk bakgrund för båda systemen och dimensionering av systemens kraftkablar samt beräkning av kabelvikter och komponentvikten för systemen. För att uppskatta kabel- rutter och längder kommer ritningsunderlag för GVAs offshoreenhet 7500 att användas.Resultatet visar att GVAs standard system är det eldistributionssystem som har den lägsta totalvikten med 168 ton, GVAs standard system har en vikt som är 101 ton lägre än Siemens Blue Drive System som har en vikt på är 269 ton. GVAs standard system har en lägre ström vilket gör att ledararean blir mindre och i med det blir kabelvikten mindre.

Hur återförsäljare kan arbeta med sitt varumärke : En fallstudie bland klädåterförsäljare i Halmstad

The study has shown that retailers in the mid-price segment differentiate their brand through developing a strong company identity around the brand. The personality involves store atmosphere, merchandise and advertising. Larger companies have chosen to lay the responsibility on management level, which facilitates on store level. By controlling the strategies on a central level the company can make sure that the stores are steered in the direction that the company wants them to be steered in, and also that they follow the positioning-concept. The company can also devote its efforts to working with its core value, which is service.

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