The power system modelled in this thesis work has been developed for simulationwhen e.g. the production in some part of the power system is changed. The powersystem has been modelled according to the swing mass of the system, the frequencydependency of the load and the turbine governor. The model determines the systemfrequency, the period of regulation and the power exchange between the differentsubsystems in the Nordic synchronized system.In this model the system frequency is assumed to be the same in all different parts ofthe power system and the voltage conditions in the power system are neglected. Forthat reason power swings does not occur between different subsystems in the powersystem, which usually occur as a result of the swinging connection between thetransmissions line.

This master thesis concerns the relationship the librarianhas to the libraries classification system. The system itselfis made by librarians for librarians and is only used bylibrarians. This raises the question of how the librariansrelate to their own system to create order. The empiricalmaterial consists of five in-depth interviews with librarians.Two theoretical approaches were used in the analysis of thematerial with one focus on the librarian?s professional rolland the other on the postmodern theories about humansneed for order.

There are regulations in sweden that require organizations to manage occupational,  health and safetey (OH&S) issues in a systematic way. The contents of the management system vary depending of the activity of the specific organisation. An accurate management system is crucial in order to assure that rules and regulations are fullfilled. The OHSAS 18001 standard covering OH&S management is intended to provide organizations with the elements of an efficient OH&S management system. The work with this thesis was done at Swemat AB in Härnösand wich is a mechanical industry. In the thesis, the requirements of the OHSAS standard are compared with the current management 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.

This study investigates communication and data in information systems. The paper deals, more specificly, with communication in a CRM-system implemented in a Swedish-founded company in Beijing, China. It discusses cultural, political, linguistic and gender based dilemmas that can arise from the use of a CRM-system in an international and bilingual environment. Fifty-nine interviews were conducted in Sweden and in China, either in Swedish or English. The result of this study shows that communication in the information system is affected by factors, that are not originated in technical shortcomings of the system, but rather from cultural, political, linguistic and gender based pre-knowledge among individuals.

Vi har undersökt vad två olika företag gör, enligt dess IT-chefer, för att styra och säkerställa att de kan förvalta och utveckla befintliga informationssystem över tiden. Undersökningen genomfördes som en fallstudie utifrån intervjuer med IT-cheferna vid dessa två företag. Resultatet visar att informationssystem och dess förvaltning ses som en naturlig del i företagets kärnverksamhet, eftersom IT-chefen placerats i företagets ledning. De undersökta organisationerna strävar efter en IRM baserad systemarkitektur för att hålla nere kostnaderna och samt att hålla informationen aktuell och samlad på ett ställe. Den snabba tekniska utvecklingen i kombination med stora kostnader vid investeringar i nya system har gjort att resurserna i huvudsak satsas på att underhålla och utveckla befintliga informationssystem..

Previsualisation är en arbetsprocess som i ett tidigt stadie ger oss preliminära versioner av bilder eller sekvenser. Den är till för att kunna uppskatta produktionskraven, visualisera ideér och en gemensam vision. En teknisk previsualisation är en mer specifik term där teknisk exakthet är avgörande. En teknisk previs kan skapas i programmet FrameForge Pré-viz Studio som denna text redogör för. Previsualisationen som beskrivs i denna text lägger grund för diskussioner kring hur den kan användas på en filminspelning.

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.

The purpose of this study is to explain the development of the first higher technical education in Trollhättan, with the added perspective of Trollhättans strong industrial profile as a city. The interesting thing being that the city did not try to first and foremost get a regular higher education, but a technical higher education instead. The study describes the political twists and turns the question took from its most early stage in the year 1940 and how the city's industrial profile did indeed have an impact on the development of the first higher technical education. Especially because there was a need for educated engineers in the city, as well as the country of Sweden in large during this time. The study also tries to explain the problems related to such a development, primarily by describing the lack of sufficient housing for schools during the 1950's, this meant that the higher regular school and the higher technical school had to cooperate in finding said housing.

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.

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.

Siffror om könsfördelning inom IT-branschen och på högre tekniska utbildningar talar sitt tydliga språk. Andelen män inom ämnesområdena data och teknik är ofta betydligt större än andelen kvinnor. Detta kan ge till följd att samhället går miste om en stor del potentiella begåvningar. En jämnare könsfördelning brukar dessutom resultera i ett trevligare och gemytligare klimat. För att öka intresset bland kvinnliga studenter för vissa IT-utbildningar har en del universitet och högskolor ändrat utbildningsformer och innehåll. Några har även utformat särskilda program som vänder sig till kvinnor.

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.

Datorseende är ett snabbt växande, tvärvetenskapligt forskningsområde vars tillämpningar tar en allt mer framskjutande roll i dagens samhälle. Med ett ökat intresse för datorseende ökar också behovet av att kunna kontrollera kameror kopplade till datorseende system.Vid Linköpings tekniska högskola, på avdelningen för datorseende, har ramverket EDSDK++ utvecklats för att fjärrstyra digitala kameror tillverkade av Canon Inc. Ramverket är mycket omfattande och innehåller en stor mängd funktioner och inställningsalternativ. Systemet är därför till stor del ännu relativt oprövat. Detta examensarbete syftar till att utveckla ett demonstratorsystem till EDSDK++ i form av ett enkelt active vision system, som med hjälp av ansiktsdetektion i realtid styr en kameratilt, samt en kamera monterad på tilten, till att följa, zooma in och fokusera på ett ansikte eller en grupp av ansikten.

The aim of this thesis is to improve the control of urea injection at the combined power and heating plant Framtidens Gärstad (FTG). Tekniska Verken i Linköping AB is the owner of the plant.The FTG plant consists of a boiler where garbage combustion is done. From the combustion nitrogen oxides are emitted. These nitrogen oxides are hazardous to the environment. To reduce the nitrogen oxides, injection of urea into the boiler is used.