Voltage sag indices are a way of quantifying the performance of the power supply, as far as voltage sags are concerned. Indices can be defined for individual events, for individual sites, and for a whole system. A standard method for single-event methods is part of IEC standard 61000-4-30.This thesis emphasizes the importance of voltage sag indices and different methods for calculating three-phase voltage sag characteristics. Three-phase events measured in a medium network voltage over period of one month were analyzed, results examined and statistically evaluated. An algorithm for calculating voltage sag characteristics and indices was created in Matlab.

För att ta reda på i vilket utsträckning digitala prov kan användas i ämnet matematik på gymnasiet har en studie gjorts, där fokus legat på ämnesplanens olika förmågor, vilka utmaningar som är förknippade med denna examinationsform samt hur det kan påverka elevernas motivation. Studien har en kvalitativ inriktning och består av en inledande dokumentanalys, implementation och genomförande av prov på dator, samt utvärdering av resultat. Genomförandet gjordes med en grupp elever på det naturvetenskapliga programmet, vilka fick lösa uppgifter digitaliserade från ett nationellt prov, och sedan fylla i en enkät som utvärdering. Tolkningen av resultaten var att examination av förmågorna begrepp, procedur och problemlösning var digitaliserbar i hög utsträckning, medan modellering och kommunikation var de mest problematiska. Vidare kunde några utmaningar fastställas och bland dessa var dels behovet av att minska tidsåtgången och dels att hitta ett lämpligt program som hanterar matematiska uttryck utan att vara för komplicerat, men även symbolhantering och grafritning generellt.

Idag har de flesta företag och organisationer någon form för intranät-lösning. Dessa lösningar kan vara både mer och mindre sofistikerade, men har oftast det samma syfte; att distribuera organisationens information till dess medlemmar.Denna uppsats ägnar sig åt intranät och fördjupar sig i ett begrepp som vuxit starkt de senaste åren, nämligen Content Management System (CMS). Jag fokuserar särskilt på val av Open Source CMS, för implementation i mindre organisationers intranät.Uppsatsen är ett resultat av omfattande litteraturstudier inom sitt område och bygger främst på vetenskapliga artiklar av ledande experter. Ytterligare en källa är resultatet av en enkätundersökning, som också redovisas i uppsatsen. Denna enkät hade som ändamål, att kartlägga användares attityder till deras CMS-intranät.Uppsatsens kanske viktigaste resultat är en redogörelse för hur ett moduliserad CMS-intranät skulle kunna utformas, baserad på bl.a.

Denna rapport beskriver utvecklingen av ChalmersAppen, en applikation för smarttelefoner med operativsystemet Android. Studenter på Chalmers tekniska högskola har behov av att nå flera olika webbsidor på Internet. Med tanke på att smarttelefoner ökar bland studenter kan studietiden underlättas med hjälp av en applikation som samlar den viktigaste informationen från de mest använda webbsidorna på ett ställe. Målet med ChalmersAppen var att den skulle utföra denna uppgift och vara användarvänlig.Som underlag till framtagandet av applikationen genomfördes en enkätundersökning bland studenterna. Undersökningen visade att det fanns intresse för en sådan applikation och vilka funktioner som var viktigast att ha med.

This report is the result of a diploma work made at IMT at US in Linköping. The purpose of this piece of work is to investigate the possibility to design a general program for data-acquisition using LabVIEW, suiting different hardwares and connections. Great importance has been attached to communication with serialport, using bluetooth, because different wireless PPG-instruments has been developed parallel to this project. These PPG-circuits uses this type of serialcommunication. Communication with USB, GPIB and analog connection has also been examined and analog communication has been tested practically.

Voltage sag indices are a way of quantifying the performance of the power supply, as far as voltage sags are concerned. Indices can be defined for individual events, for individual sites, and for a whole system. A standard method for single-event methods is part of IEC standard 61000-4-30.This thesis emphasizes the importance of voltage sag indices and different methods for calculating three-phase voltage sag characteristics. Three-phase events measured in a medium network voltage over period of one month were analyzed, results examined and statistically evaluated. An algorithm for calculating voltage sag characteristics and indices was created in Matlab.

In electricity markets evolving towards liberalisation and internationalisation, green certificates are seen as an important tool to promote production of renewable energy. In a green certificate market producers sell certificates received per unit of electricity generated from renewable energy. Trade in renewability is thereby decoupled from the the physical electricity trade. Tradable green certificates in combination with renewables obligation are implemented or planned in several EU member states. Integration at EU leveland the creation of a common certificate market seem like a possible next step.

SammanfattningSyftet med detta examensarbete är att bidra med kunskap om vilka möjligheter, samt svårigheter det finns med att implementera en ny läroplan. För att vidare konkretisera syftet har tre frågeställningar tagits fram:1. Vad har verksamma inom skolväsendet i Sydafrika för uppfattningar om den nya läroplanen?2. Vilka möjligheter samt hinder ser de verksamma inom skolväsendet i Sydafrika med den nya läroplanen?3.

This thesis presents the results of the implementation and evaluation of two machine learning algorithms [Baz98, GB97]based on notions from Rough Set theory [Paw82]. Both algorithms were implemented and tested using the Weka [WF00]software framework. The main purpose for doing this was to investigate whether the experimental results obtained in [Baz98]could be reproduced, by implementing both algorithms in a framework that provided common functionalities needed by both. As a result of this thesis, a Rough Set framework accompanying the Weka system was designed and implemented, as well as three methods for discretization and three classi cation methods. The results of the evaluation did not match those obtained by the original authors.

ABB and Prevas have initiated a collaboration to sell a system to optimize steel industry furnaces, called FOCS. The purpose of this thesis is to investigate possibilities for integrating Prevas FOCS and ABB 800xA.The result of the investigation is used for an implementation of a prototype of the integrated system. The study shows a general method that can be used when implementing two software systems. The prototype of the integrated systems is made with usability principles in mind. This is a very important aspect in order to create a good working environment for the operators of a steel plant.

Denna rapport beskriver utvecklingen av ChalmersAppen, en applikation för smarttelefoner med operativsystemet Android. Studenter på Chalmers tekniska högskola har behov av att nå flera olika webbsidor på Internet. Med tanke på att smarttelefoner ökar bland studenter kan studietiden underlättas med hjälp av en applikation som samlar den viktigaste informationen från de mest använda webbsidorna på ett ställe. Målet med ChalmersAppen var att den skulle utföra denna uppgift och vara användarvänlig.Som underlag till framtagandet av applikationen genomfördes en enkätundersökning bland studenterna. Undersökningen visade att det fanns intresse för en sådan applikation och vilka funktioner som var viktigast att ha med.

This thesis examines the interaction between European football and the European Union and if it can generate Europeanization. By using theories of Johan P Olsen and Claudo M Radaelli a theoretical framework was constructed in which Europeanization is seen as an interaction between the European level and the domestic level. The Europeanization is regarded as a two way process with elements of top-down and bottom-up pressures. The study focus on the changes and the actors in the Europeanization process and how the European Union as a top-level and European football as a bottom-level influence each other to European changes. The theoretical framework is used to analyze the Bosman case and the Cotonou agreement's implementation in a Swedish football context.

Sweden has one of the best elderly cares in Europe and the Swedish care work is also one of the best in terms of quality, compared to other European countries. In recent years, higher demands have been set on the care work and the number of privatizations of public services has increased. In 2009 a new law came into force, the Act on System of Choice (LOV) which increased individual?s right to a greater participation and a free choice in the selection of health and social care providers. This paper aims to highlight the impact of the law, system of choice.

The work with Agenda 21 resulted in a larger focus on local participation and deliberation. The Swedish implementation of Agenda 21 is a result of these local governments´ political agendas and policies.The purpose with this paper is to examine the relationship between the citizen and the local government. It focuses on three theories of citizenship and how the view of "the environmental aware citizen?; in the local government?s municipalities policies differ and from which theory of citizenship do they come from.The analysis is of a valuing and comparing nature. The municipalities´ web pages have been the main source to generate an understanding of their view on the normative environmental work.

The aim of this project is to examine the needs and problems that exists amongst homeless people and to develop a solution that will help them in their everyday life. Since the homeless are a relatively large vulnerable group i Sweden, their everyday lives could be made easier in many ways.A clear definition of the target group is put together to create a good starting point. What state and help orginazations do to help the homelss and the society?s view of the homeless is also relevant and has been documented. Four personal stories have been put together to desicribe cases of clear problems existing in everyday life.Several interesting problems has been defined from the research and acceptance in the communtiy, desire to be seen and heard and a lack of confidence were the main needs.