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2593 Uppsatser om Power copy - Sida 60 av 173

En förstudie för bioetanol produktion i Borås

AbstractThe purpose of project is to study the possibility for Borås Energy & Environment to build and run a commercial ethanol production facility in Borås. The project also studies the technology for the production of ethanol using renewable energy, e.g. lignocelluloses with focus on two processes, svag-syra hydrolyse and enzymatic hydrolyse. The technology of the process is based of hydrolysation of biomass (hemicelluloses and cellulose) to sugar and extract it to ethanol. These two techniques will compare with each other to determine which of them that it?s more suitable for ethanol production.

Arbetsberedningar i syfte att öka delaktighet och tillvaratagande av kompetens bland yrkesarbetare -Utvärdering av ett nytt arbetssätt för Skanska Region Hus Göteborg

The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication medium is complex and sometimes problematic. This report handles some of the issues and problems that are important to understand when using the grid as a communications medium. Focus is mainly on investigating high frequency distortion in the Kristianstad power grid own by C4energi caused by a frequency converter. Measurements on site are done to investigate signal damping in the grid, different configurations for the frequency converter and signal strength of the PLC-system.

Information, makt och konspirationsteorier : En studie av informationskritiska användare

Purpose?This study has examined the information behaviour and perception of information in a group ofinformation users who have a critical approach to the media and the information supply. Some of them call themselvesor are being called conspiracy theorists. The purpose was to examine how their information behaviour is influenced by the belief that the information is biased or inaccurate and what the information behaviour looks like when the user searches for discrepancies rather than a response to a question.Method?The study is based on transcribed interviews and email responses to interview questions.

Elcyklar och dess möjlighet till uppladdning under drift

Today?s environmental discussions have led to more progress in the different transportareas. To ride a bicycle is often one of the most efficient alternative when it comes totransport. An Electric bike is, and makes transportation more efficient than a regularbicycle. Electric bicycles do not affect the environment significantly and allows moreconvenient transportation than ordinary bicycles do.

Metadata för det digitala biblioteket : Objektbeskrivning av elektroniska resurser

Cataloguing electronic documents makes new demands on libraries. This thesis discusses the metadata formats Dublin Core and MARC which are, individually or in combination, commonly used for object description in the digital library.The formats are studied with particular emphasis on characteristics such as underlying reasoning (ambitions during the development of the formats), flexibility (possibilities of expansion and adaption to new demands) and interoperability (cooperation between different metadata formats). The formats are dealt with in their context, i.e. we discuss what types of documents the formats are meant to describe, what environment they were originally created for, what functions they are meant to fill (to find, identify, select and acquire/obtain entities), and also how these factors are related. The Swedish projects SAFARI (which uses Dublin Core) and NetSök (which uses MARC) are presented briefly.

Implementing a receiver in a fast data transfer system : A feasibility study

This report is an outcome of a master degree project at Linköpings University in co-operation with Micronic Laser Systems AB. The purpose with this master degree project was to investigate how to implement a receiver in a data transfer system. The system consists of several data channels, where every channel consists of three parts: driver, transmission lines and receiver. The driver send low amplitude differential signals via the transmission lines to the receiver that amplifies and converts it to a single-ended signal. The receiver has to be fast and be able to feed an output signal with high voltage swing.

Energieffektivitet i datahallar

The number of data centers and their capacity is increasing throughout the world. Theenergy used in these data centers and the emissions from the use are increasing at thesame rate. The total use of energy will double from 2008 to 2011 based on the trends indata centers use. Research in this area says that the emissions from data centers willhave surpassed the level of airline traffic in 2020. The index used today to compare howefficient a data center is, called PUE, is lacking some information.

Audio Broadcast

This report is the written part of a bachelorthesis on the computer engineering program atUniversity of Halmstad. The project was a cooperate project that where done together withFree2move Holding AB. Free2move is a company with eight employees in Sweden and four inMalaysia. The company is today developing Bluetooth modules and RFID chips. The market forthis kind of products is growing very rapidly, last year it grew 71 percent.

Fostran som pedagogiskt projekt : Bilden av ?problembarnet? i statens offentliga utredningar

Titel: Fostran som pedagogiskt projekt. Bilden av ?problembarnet? i statens offentliga utredningar. (The bringing up of pupils as an educational project. The image of ?the problem child? in governmental committees).   This study focuses on the image of the problem child as it appears in two texts (from the 1940s and 1970s) of governmental committees on Public Health (SOU) and the new school law (Ds 2009:25, will be implemented in July 2011).

Delaktighet under tvång. En kvalitativ studie hur LVU-placerade ungdomars delaktighet kommer till uttryck i behandlingsplaner på ett särskilt ungdomshem.

Swedish law (SOL 2001:45, LVU 1990:52) has gone through several changes to promote participation. The law also includes that young people should be able to participate even during a placement at youth detentions.  The aim of this study is to describe how young people at youth detentions are participated in their treatment plans. The questions of the study were: How and where are the young opinions produced in their treatment plans; how did the opinions change during the time in detention; and how have the opinions been considered at youth detentions? Participation is a wide concept with different meanings. The meaning of participation in this study is that youth have been listened to and that their opinions have been paid attention to.

Förskolegård för ett Reggio Emilia inspirerat tankesätt :

The shape and arrangement of the outdoor environment at a preschool has a critical impact on the possibilities to practice different pedagogic activities (Grahn et al.1997). At the preschool at Edwin Ahlqvists road, the employees are inspired by Reggio Emilia in their way of thinking, and they consider their outdoor environment is not suitable for the pedagogic activities they use. Reggio Emilia is a city in the north of Italy (Wallin 2001). The preschools there are famous for their pedagogy, their creativity and their democratic way of working (Dahlbech & Johansson 1986). The Reggio Emilia pedagogy is constantly renewed and developed, but with the children?s needs in focus and simultaneously with the quick changes of the modern society.

Battle of the Produce

Thesis Purpose: The purpose of our thesis is to explore different plausible scenarios concerning the future of the Swedish produce industry with regards to branding. Methodology: In order for us to answer the research question and fulfill its purpose, we have utilized a qualitative approach combined with of both an inductive and deductive theoretical approach. Our study is both explorative and speculative. Theoretical Perspective: The theoretical framework of our research is based upon Porters Five Forces and Competitive Advantage combined with Kapferers Brand Identity Prism and his ideas on Brand Innovation. Additionally, we have utilized the Game Theory.

Optimering av ett småskaligtvattenkraftsystem

This master thesis covers the seasonal planning of a small scale hydropower system. The system in this study is owned and operated by Mälarenergi Vattenkraft AB. The total system consists of 4 different main rivers with 24 hydropower stations and several dams. The total installed power in the system is 43.75 MW. Most of the hydropower stations are regarded as small scale hydropower stations and thus entitled to green certificates.In this report the issue of planning is formulated as an optimization problem.

Bojkonstruktion

The division of Electricity at Uppsala University runs a project called Lysekil project, they have designed a buoy that uses the waves to create electric power from a generator attached to the bottom of the sea.Uppsala University is closely connected with the company Seabased and the university makes use of their facilities in Lysekil. When they designed the buoy issues occurred, the geometric design was flawed, brackets with a short shelf life and it is generally uneconomic.A study visit was done in Lysekil on Seabased facility. With this visit the project started, which is to improve the design of the buoy and the attachment of wires leading to the generator. In this project we have chosen to use a beam system with three beams that are attached to the buoy. Then a wire attached to a plate that sits between the beams will be leading to the generator. Two proposals for construction are created, what distinguishes them are the brackets between the beams and the buoy.From these constructions, the design that is considered most optimal for our project is chosen.All parts of the buoy have been modeled and the drawings are designed in ProEngineer software.The two constructions are compared with each other, but the whole focus is on the second and final structure. The report begins with an introduction describing Lysekil project, and a task description of our project.The project aims to produce an optimal buoy that will be easy to design, materials restrictive with good durability and an economical solution.Wave power true function has been studied, mechanical and finite element analysis of beams, buoy and plate design.This has been presented in this report, where in the various chapters can read more about the processes. Although the relevant facts and information on this project and buoy development is included.

Ständiga förbättringar inom verksamhetsprocesser : en studie mellan läkemedel- och kärnkraftindustri

The purpose of thesis was to investigate and compare how two companies within pharmaceutical industry and nuclear power industry are currently working with quality development regarding continuous improvement and Lessons Learned in business processes. In addition, a simple comparison was made with the automotiveindustry.McNeil AB are improving their processes continuously and are according to the findings of this report performing well in their pursuit of world-class pharmaceutical production. They have a well functioning process regarding improvements proposed in weekly improvement meetings engaging all employees. However, during interviews it was made clear that the functionality of the process which administer improvement proposals generated in addition to, or beside the weekly improvement meetings, were inadequate. McNeil AB is proposed to administer this through an IT solution instead of by paper and e-mail, that simplifies the process of adding, implementing and follow up an improvement proposal.The nuclear power plant Ringhals AB recently made major improvements in their business processes as well as the plant itself.

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