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9524 Uppsatser om VBX; Ventilation-system; Heat recovery - Sida 46 av 635
Solenergi En del i ett långsiktigt, hållbart byggande
The sun is essential to life on earth and no matter where you are, there is a constant need ofenergy. Nearly 800 000 years ago man learned for the first time to use fire in a controlled way.Since then, fire has given us the opportunity to inhabit places despite a cold climate. In Swedenthe resident sector accounts for a major part of the total consumption of energy. In a time whenenvironmental issues and greenhouse effects are increasing, we also see a future of rising energyprices. With this perspective, we have in this bachelor thesis in the Building Environment at theRoyal Institute of Technology, KTH, in Stockholm decided to focus on the renewable energysource, solar energy.The energy from solar radiation is a free resource and does not have any negative effects uponthe environment.
Transporttider för vatten i närområdet till en vattentäkt : spårämnesförsök i en isälvsavlagring
When establishing a groundwater protection area it is of great interest to be able to estimate the transit time of the groundwater from different places of the aquifer to the withdrawal well. These estimates can be uncertain due to heterogeneities in the aquifer. As a part of the work to develop methods for a more certain delineation of protection areas, a tracer test was performed in an esker located 25 kilometres NW of the town Uppsala.The purpose of this master thesis was to perform, describe and evaluate the tracer test. Travel times from the tracer test should then enable comparison against stochastic simulated travel times of the groundwater in the area.Three dyes (rhodamine WT, uranine and naphtionate) and a salt (NaBr) were used in the tracer test. The tracers were injected in four different wells located 25 meters from a pumping well.
Kalkylering i flygbranschen: En fallstudie av ett flygbolag
The purpose of this thesis is to analyse and propose improvements to the cost accounting system in use at an airline operating on the Swedish market. The choice of study object is based on the airline?s desire to have its cost accounting system evaluated. During the analysis we have identified a number of points where the current cost accounting system does not correspond to its intended purpose. These points include significant groups of costs not being considered in the current system, potential over capacity is not visible and logic connections between distribution keys and the use of resources are sometimes lacking.
Den manliga heterosexuella normen En analys av SAB-systemet utifrån ett feministiskt och queerteoretiskt perspektiv
The aim of this Masters thesis is to conduct an analysis of the Swedish classification system the SAB-system from a feminist and queer theoretical perspective. The theoretical framework of the study is feminist and queer theory as well as theories from Library and Information Science, mainly classification theory. The study takes its departure from the idea of classification systems as social constructs, reflecting their time, place and society. Paul Ricoeurs critical hermeneutics is used as methodological guidance. This gives room for a critical perspective in the interpretation.
Datorstödd implementering med hjälp av Xilinx System Generator
The development in electronics increases the demand for good design methods and design tools in the field of electrical engeneering. To improve their design methods Ericsson Microwave Systems AB is interested in using computer tools to create a link between the specification and the implementation of a digital system in a FPGA. Xilinx System Generator for DSP is a tool for implementing a model of a digital signalprocessing algorithm in a Xilinx FPGA. To evaluate Xilinx System Generator two testcases has been designed. The testcases are selected to represent the FPGA designs made at Ericsson Microwave Systems.
Ytterligare ett IT-system
Denna rapport avser att undersöka för- och nackdelar med att utveckla ett för ändamålet specialanpassat system eller utnyttja de standardsystem, som i det aktuella fallet tryckerikoncernen JMS redan äger och använder. Genom en mer noggrann definiering av ickefunktionella krav på bland annat användbarhet har en specialanpassad prototyp framställts. I projektet användes metoder för kravinsamling som ledde till en kravspecifikation och i sin tur slutade med en färdig prototyp. Prototypen jämfördes med två standardsystem genom användartester och intervjuer. Prototypen visade sig leva upp till de krav som upptäcktes.
Hur stödjer systemutvecklingsmetoder kommunikation mellan systemutvecklare och kund?
AbstractThis paper discusses how system development methods today support communication between system developers and their customers and end users. Today there are many system development methodologies with different aims and emphases. It is difficult, however, to find among these methods those who promote good and effective communication with customers because so many of these are very technically rooted and not as much directed towards the soft aspects of systems development - i.e. Human aspects. Our own experiences tells that a simple interview can be initialized without us having an idea what to ask the customer about or how to structure it up - nonetheless it?s done, but the outcome is just chance.
Vad kostar det?: Fallstudie av en banks kostnadsallokeringssystem
This paper investigates the internal product costing system in one of the Swedish banks with the purpose to evaluate the quality of its product costs and possible implications on decision making. The study shows that the current system distorts product costs by, among other things, using relative allocation of costs and time and by allocating all costs to individual units of products. We therefore propose an alternative product costing system, which mainly draws on ABC theory but is also adapted to the specific needs of service companies and of the Bank. This proposal is intended as a solution in this particular case and not to be generalized in other contexts. We hope however to add to the understanding of why more complex costing systems, such as the ones based on ABC theory are, according to previous studies, not widely used in practice.
Tjänstekvalitet ur ett kund- och medarbetarperspektiv
Syfte: Den bakomliggande tanken med vår uppsats är att belysa tjänstekvalitet från ett kund- och medarbetarperspektiv. Vi ville dels undersöka medarbetarnas uppfattning om det egna företagets tjänstekvalitet och dels kundernas uppfattning av och förväntningar på företagets tjänstekvalitet. En annan aspekt som undersöks är hur kundrelationens längd påverkar den kundupplevda tjänstekvaliteten.Metod: Både sekundär- och primärdata har använts i uppsatsen. Vi har genomfört en litteraturstudie för att söka kunskap inom området tjänster och tjänstekvalitet. Därefter genomförde vi en förstudie i form av interjuver med befintliga kunder till företaget och slutligen gjorde vi en kvantitativ undersökning.
En livsviktig utveckling : en reviewstudie om hjärt- lungräddning (HLR)
AimThe aim of this study was to find out how the research that has changed CPR training developed from a historical perspective. The question at issue was: When the recommendations for chest compressions/ventilation, defibrillator and education have been changed, what kind of research led to the development?MethodTo fulfill the aim of this study we chose a review process. First we read the international guidelines for cardiopulmonary resuscitation (CPR) published by the American Heart Association (AHA), from year 1980 until year 2010. Secondly we chose the most important changes that had been made within the issues we had selected, then we examined the research that had supported these issues.
Arts and Culture : en fallstudie av konstcentret PJ Olivier i Stellenbosch, Sydafrika
The intention has been to look at the school system in South Africa and specifically at arts and culture in grade 10 to 12. I have visited a number of classes and interviewed the teachers working at the art centre PJ Olivier in Stellenbosch. By doing this I wanted to get to know the system and to understand the intentions that the curriculum describes.I have all through the study related the areas I?ve looked at to the curriculum to see how well the intentions are implemented. I have also compared everything with the Swedish school system.The curriculum has good intentions but the country has a lot to do before they reach the goals with a school system where everybody is included and where there is ?ubuntu? (Zulu word for humanity or I am what I am because of what we all are).
Utveckling av styrsystem för EMC-kammare
This thesis aims to develop a control system for measuring electromagnetic compability (EMC). This has meant that a controller designed around an ATmega8 microcontroller has been manufactured and programmed. It has also meant the development of a comprehensive control software in the program MATLAB. The control system has been tested with satisfactory results and can now, monitor and control measurements of the EMC-type..
Ekonomi i Passivhus : En studie av två verkliga byggnader
The aim of this report was to investigate the economy of passive houses. The work was focused on economy in total and on the economy of different components such as windows, insulation, heat exchanger and the air tightness of the climate shell. No attention was paid on the comfort factor or to the impacts on the environment.Two houses, aspiring to be passive were chosen; A big one and a small one. Hence, comparisons considering the size of the building have been possible to do as well.The comparisons were made by calculating ?break even? between two concepts; passive and BBR- concept.
Användbarhet ? En fallstudie av ett point-of-sale system
Problem: Our opinion is that it is important to consider about usability in
system development. In this thesis we will focus on usability in point-of-sale
systems. The point-of-sale system we base this thesis on is Extenda Retail. Our
case study is performed on Ica Kvantum in Bromölla, which implemented Extenda
Retail about two years ago.
Purpose: The purpose of this thesis is to figure out what important factors
there are to consider, in usability aspects, when developing point-of-sale
systems, with focus on the cashier. We also wish to find out the cashiers
opinions about the Extenda Retail system.
Method: The information gathered for this thesis consists of literature and
interviews.
Hot mot yrkesrollen eller vardagligt verktyg? En studie av lärares inställning till lärplattform
Today an increasing number of schools and organizations are investing in so called Learning Management Systems. Researchers disagree on the pedagogical value of these tools. Some mean that Learning Management Systems cement old-fashioned behaviouristic teaching practices; others mean that the systems provide good opportunities in supporting learning in a socio cultural perspective. The aim of this study is to reach better understanding and increased knowledge of how the introduction of a Learning Management System influences the role of the teacher and how the learning is organized. We have conducted two case studies.