This master thesis deals with problems in the arc length control in Pulsed MIG/MAG Welding. The main problem is that it is not possible to measure the arc length. In the present solution the voltage over both the electrode and the arc represents the arc length. To improve the arc length control a model of the electrode melting has been built. One output from the model is the voltage over the electrode and with this voltage together with the measured voltage it is possible to calculate the voltage over just the arc.

Abstract The purpose of this essay is to find difficulties and risks in the re-engineering process when restructuring to Model-View-Controller (MVC). A thoroughly theory study has been conducted to be able to understand the important steps in the re-engineering process. The methods and concepts of this essay are re-engineering, UML, system development life cycle, design patterns and MVC. The science approach used is design science where the artifact being developed are a set of models.In the analysis phase of the process the system is analyzed. The result of the analysis is notes of difficulties found and models showing the structure of the system.

The standard model concerning the relationship between perception and motility is linear and one-way. It depicts the flow between the two as moving from sensation to perception to representation to computation, and finally, to motility and action. According to this model, animal being is basically a bundle of reflexes. But what can correctly be considered a bundle of reflexes from a natural science point of view, doesn't necessarily have to be true. This conception does not take into consideration the more complex interactions between motility and perception that constitutes, or generates, animal and human beings.

The development that the Swedish society has experienced during the last four decades and the higher part of the population coming from foreign countries calls for a more intensive research on the situation of these groups. The purpose of this study is to find explanations of the differences in the share of immigrant politicians in Linköping and Norrköping. The starting point of the study is a model of factors assumed to affect the representation of immigrants in the municipality assemblies. The immigrant composition, the municipality organization and the view of democracy of the politicians, are all assumed to affect the civic participation. The civic participation is then assumed to affect the representation of immigrants in the municipality.

In order to facilitate testing of anesthesia machines a patient simulator has been required by Maquet Critical Care AB. A patient simulator has been developed to reduce expensive and time consuming animal experiments and temporary lab arrangements. The patient simulator has been developed and designed to simulate human lungs with regards to anesthetic uptake, production of carbon dioxide and heating and moisturizing exhaled air.The system comprises a container and a test lung to simulate the volume and the dynamic of the human lung. The simulation of uptake of anesthetics has been implemented by pumping a fraction of the gas from the container through a bypass circuit with an active charcoal filter that adsorbs volatile anesthetics. The flow through the bypass circuit is generated by a pump and is controlled by a linear valve.The resulting performance of the patient simulator has fulfilled the requirements.

This report deals with the design of a controller for SmartMedia? flash memory cards, based on a hardware description found in the SmartMedia? Interface Library - SMIL. The design was made on logic gate level, using standard cells in OrCAD Capture. After simulation of the design in PSpice A/D, it was exported as an EDIF netlist, which was used to make a chip layout in L-Edit, a layout tool for making integrated circuits. The layout was made using a method called Standard Place and Route - SPR, where the layout tool places standard cells from a library and connects them according to the EDIF netlist.

This thesis is divided in to two different parts. The first part includes examination of the measurementsystem of an industrial robot using a resolver sensor. The main focus is on methods for suppressing noise in the angularvelocity signal without increasing timedelay. Five different methods are investigated. Three of these are based on oversampling: burstsamplingmethod, meanvaluemethod and correlationmethod.

Sammanfattning  Det finns många definitioner av vad yrket controller innebär, vilket visar att yrkestiteln är svårdefinierad. Syftet med studien är att beskriva controllerns arbetsroll i medelstora tillverkande privata företag och om controllerns roll fokuserar mer mot styrorienterade uppgifter eller mer mot traditionella ekonomiuppgifter. Vi utformade därför följande frågeställning: Är dagens controller i tillverkande företag mer styrorienterad eller mer en traditionell ekonomichef? Vi valde att genomföra en kvalitativ studie eftersom det möjliggör en djupare förståelse och sedan använde vi oss av en deduktiv ansats där vi gick från teori till empiri. I vår teoretiska referensram har vi beskrivit olika egenskaper, färdigheter, roller och arbetssätt som ingår i controllerns yrke.

The ISO standard ISO/IEC 17799/SS-627799-2 is a guidance for organizations to realize their information security goals. In spite of this standard, studies show flaws regarding information security in organizations. In particular flaws regarding overall view, knowledge and clear roles and responsibilities have been observed. The ISIT (Information Security Integrated Three level) model and its guidelines, developed in this thesis, help organizations to identify the required processes and procedures as well as the logical process flow. The thesis is based on theoretical studies and a case study within a multinational company.

Bakgrund: Sjukvården beskrivs som oerhört komplex och genom bland annat utveckling av ny och dyr teknik, som i sin tur genererar bättre vård, gör det svårt för sjukhus att hålla sin budget. En controller har en fundamental roll i en organisations ekonomistyrning och ska med hjälp av diverse styrmedel styra och kontrollera så att verksamheten drivs mot ekonomiska mål.Syfte: Syftet med uppsatsen var att beskriva och analysera hur en controller inom sjukvården använder ekonomiska styrmedel för att nå ekonomisk måluppfyllelse samt skapa en förståelse för hur en controller hanterar balansgången mellan ekonomisk måluppfyllelse och vårdkvalité.Metod: Uppsatsen är formad med en kvalitativ forskningsdesign. En flerfallstudie har använts som forskningsstrategi där den empiriska datan är insamlad genom ostrukturerade intervjuer med anställda vid två sjukhus i Småland, länssjukhuset i Kalmar och centrallasarettet i Växjö. Det teoretiska avsnittet är byggt med data som insamlats från litteratur och vetenskapliga artiklar som varit tillgängliga via Linnéuniversitetets bibliotekskatalog.Slutsats: De resultat som framkommer av studien påvisar att en controllerns användning av styrmedel tenderar att fokusera på ekonomisk måluppfyllelse. Genom användning i större utsträckning av de styrmedel som är under utveckling finns möjligheter för controllern att även påverka vårdkvalité..

The ISO standard ISO/IEC 17799/SS-627799-2 is a guidance for organizations to realize their information security goals. In spite of this standard, studies show flaws regarding information security in organizations. In particular flaws regarding overall view, knowledge and clear roles and responsibilities have been observed. The ISIT (Information Security Integrated Three level) model and its guidelines, developed in this thesis, help organizations to identify the required processes and procedures as well as the logical process flow. The thesis is based on theoretical studies and a case study within a multinational company.

This master thesis is a result of the work carried out for Research Electronics at Siljansnäs. The company develops customized electronical systems. Because of the rapidly increasing interest in colour displays there has been a desire within the company to represent information from sensors and electrical systems in a more advanced way.Due to the mentioned reason above we were given the assignment to solve how a colour display using the STN technique works. The technique is used by small displays, the size of QVGA. Our ambition of this diploma work is to develop a fully functionally test prototype to evaluate the LCD (Liquid Crystal Display) and the LCD controller.

Controllerrollen har sitt ursprung i USA där den verkade i de amerikanska järnvägsbolagen under 1800-talet . Termen kom sedan till Sverige runt 1970-talet då intresset för en controller ökade i Europa. Behovet av controllerfunktionen har ökat bland annat beroende på en ökad decentralisering, som medför ett behov av exempelvis information kring företagets ekonomi till flera nivåer.I och med att omvärlden förändras så måste även företagen förändras. För att kunna behålla sin konkurrenskraft har ekonomistyrningen samt controllerrollen hamnat mer i fokus. Controllerns arbetsuppgifter har gått från att enbart vara inriktad mot bokföring till att ha en mer verksam roll i ledningsgruppen. När det anses otydligt vad en controller egentligen ska arbeta med blir det svårare för företagen att själva förstår motivet till varför de tillsätter en controller. Detta är viktigt för att de ska få den controllerroll de söker.

The report analyses if some common problems can be avoided by using modern technology. As a reference system ?Fartygsrapporteringssystemet? is used. It is an n-tier web application built with modern technology at time, 2003-2004. The aim is to examine whether ASP.Net MVC, Windows Communication Foundation, Workflow Foundation and SQL Server 2005 Service Broker can be used to create an n-tier web application which also communicate with other systems and facilitate automated testing.

The idea to develop  a platform for a PID-controller came from the need to control the temperature in  an espresso machine in a more exact way than a thermostat could perform. In discussions with Syntronic AB the idea developed into PID-control for industrial use. Syntronic AB suggested that the platform should be based on a commercially available processor module to shorten the development time. The suggestion included the use of the microcomputer Raspberry Pi, which supports USB, HDMI, memory card and Ethernet.The work began with establishing a schedule for the 10 weeks of the projects duration, and after that a system specification listing all functions, implementation and limitations was made. When the foundation of the system specification was done, a preliminary system design took shape.Because of the Raspberry Pi´s lack of Analog-to-Digital converter, a circuit board containing Wheatstone bridges, differential amplifiers and a two channel Analog-to-Digital converter was fabricated.