ABB Surge Arrestors in Ludvika have for a long time had a problem to keep the moisture at a steady state in the production of their ZnO-powder, that is used to produce varistors.Some black-box models of the spray drying process have been designed and evaluated to find a solution for the problem. After evaluating the collected data it has been found that variations in the supply voltage causes control difficulties for the operator. A cascade control system was designed, consisting of three PI control loops designed with lambda tuning. The disturbance in the supply voltagewas used as a feed forward in the control system.At the end of the project the control system was installed, and tests were made to verify the functionality of the regulator. It was shown that most of the variations in the moisture of the powder could be eliminated using small resources, through purchase of a process controller and four power meters.

This master thesis is one part of a project, called ?StabSim?, with the purpose to develop a simulation model for the align and stabilisation system in main battle tank 122. The origin of this project is that it should be possible to make control analysis without risking any hardware. Besides that it will be easy to change components in order to investigate the behaviour of the system. The report includes modelling of tower and weapon mechanics and also the modelling of the synchronous motors, which control these.

This study takes place within a publicly owned art producing organization and dwells on the problems of a change process that the organization was involved in. Both leaders and staff were disappointed by the way the change process had developed. The management team explained the outcome by referring to the uniqueness of working with artists who constantly put their own personal objectives before the benefit of the whole. The aim of this study is to find a complementary explanation to the one the management team provided us with; an explanation that can help in the understanding of the dynamics of a change process. Can perhaps theories on information, communication and change processes give an alternative explanation to why the change process faltered? To investigate this, we have used a qualitative single case study.

Länsförsäkringar in Värmland, Sweden, had during the year 2003 a total level of 6.1 percent of people on the sick-list, which was higher than average in the business (4,5%) and for salaried employees in the private sector (3,3%). The average age of those put on sick-list was 47 years, whish is four years higher than the average for the whole LF-group. The cost for the total amount of people being on sick-list at LF-company (6,1%) was estimated to 1 500 kkr, according to a calculation model coming from Försäkringskassan. For every percent the sick level could be reduced, the company would save 239 kkr. To map out the state of health of each and every collaborator in LF, the company offered all employees to make a health profile at the company's health service, Clarahälsan AB.

Syftet var att undersöka om personers Locus of Control påverkar deras konflikthanteringsstrategier i kärleksrelationer. Hypoteserna var: H1: Det finns skillnader mellan personer med extern och intern Locus of Control när det gäller vilka typer av strategier de använder för att hantera kärleksrelationsproblem. H2: Personer med intern Locus of Control har större benägenhet att använda sig av relationskonflikthanteringsstrategin Kompromiss i sina kärleksrelationer. H3: Kvinnor påverkas mer än män av Locus of Control när det gäller vilka typer av strategier de använder för att hantera kärleksrelationsproblem. Deltagarna var 172 studenter.

The essay discusses the effects that changes to the office plan have on organizational culture. Information about actual change as well as expected change in organizational culture was gathered before the empirical research was initiated. The empirical research was carried out at the Customer Logistics department at Ericsson through: an interview with a manager in charge of the relocation and design of the office, a manager for the specified department and also five employees of this department. The empirical studies show that there was a significant change in organizational culture and that results were not always as expected. There was a loss in symbolic actions, which needed to be compensated for, a perceived reduction in spontaneous communication, and a mixed response of perceived change in social interaction.

The connection between management control systems for controlling sustainability and a firm's motivation for engaging in sustainability is not completely understood (Arjaliès & Mundy, 2013). The aim of this thesis is to develop a more profound understanding for management control in achieving sustainable companies. To do this, we raise the question: How and to what extent do companies use management control systems to achieve sustainability compliance Simons's Levers of Control (1995) are applied to this question in order to get a consistent and thorough insight of management control systems. Hence, a case study of ABB:s work to achieve material compliance in accordance with EU-regulation was conducted. The findings of the case study reveal that ABB uses the regulations as explicit goals and implement them in sustainability procedures.

In the electronic industrials, power control of AC motors is commonly used. For example power control of a washing machine motor, a vacuum cleaner motor or a coffee machine motor. The company Rejlers Ingenjörer AB has many projects where power control of AC motors is included. A prototype card for this task can save time and money for the company in the future and this is the reason for this thesis.The motors are power controlled by a TRIAC and control of the trigging pulses to the TRIAC. This card is modularly built and can easily be adapted for future projects where the power control of AC motors are included.The prototype card can be used as a subsystem in a larger electronics projects or as it is in lab environment for testing and evaluating new motors..

To be allowed to sell Z-suspended vehicles with dipped beam Xenon or LED lighting, Scania have to develop automatic headlight level control. This master?s thesis aims to be the foundation to that development.The thesis consists of several parts; a market analysis of how competitors to Scania and the general vehicle industry solve this problem; several available principles for detecting the amount of control needed; the construction of a test station for sensors, a control unit and components connected controlled by the control unit; a further theoretical and practical development of one principle ? one rotational sensor connected between the chassis and the back drive axis; a state flow model programmed in Simulink that produces the control signal for the headlight leveling from the sensor input.Lastly the thesis gives some recommendations to the further development and implementation of automatic headlight level control on Scania vehicles..

Föreliggande studies syfte var att undersöka validitet och intern konsistens för den svenska översättningen av Impaired control scale (ICS), en självskattningsskala som mäter grad av kontroll av alkoholkonsumtion. ICS består av subskalorna; Attempt control (AC), Failed control (FC) samt Predicted control (PC). Svar på ICS sammanställdes från respondenter (n = 203) som behandlats för alkoholproblem vid mottagningar i Västra Götaland. Faktoranalysen visade en bakomliggande faktor för AC, och två faktorer för FC respektive PC. Den interna konsistensen var god.

AbstractThis report is about the creation of a test system for development of a control system for a off the shelf RC-helicopter, which can be bought for about two thousand SEK. The test system consists of both electronics for controlling the helicopter and mechanical constrainer. The constrainer is used for mounting the helicopter so that it won´t crash.A circuit board including processor and sensors was manufactured. This was used for doing test of the different control algorithms. In this way were we able to analyze the quality of the sensors chosen, and what other sensors that could contribute to the control of the system.Basic helicopter control have been studied and presented in the report.

The Swedish Tax Agency is a government authority whose mission is to collect taxes and fees for financing the public sector and welfare in Sweden. Under the last decade the tax gap in Sweden has been constant and small businesses with a max turnover of 25 millions Swedish crowns are the biggest group in the tax gap. In the government inquiry about abolishment of statutory audit for small businesses (2008) there has been laid some proposals that the Swedish Tax Agency should get new control tools and increased rights to control small businesses tax accounts. In the science some controversies exists about tax authority?s ability to get taxpayers to pay taxes and fees to the society through using deterrence and compellence control methods versus more service? This ground has guided us to our presentation of a problem: ?How the Swedish Tax Agency works with influencing small businesses behaviour through preventive actions and controls?? The purpose of this study is to research and understand how the Swedish Tax Agency works in their control activities to influence small businesses behaviours regarding taxes and fees.

The purpose of this thesis is to analyze the design and function of an engine production management?s control system and its intended function, and to contrast it with the present management control systems in use on an operational level. Interviews conducted with employees from all levels of the engine production are the main source of this study?s empirical foundation. Information has also been gathered from relevant written material such as annual reports, internal documents etc.

This thesis has been carried out in collaboration with LEDtec International AB. LEDtec focuses on innovative solutions in LED screens. Everything from large advertising signs to welcome signs in cities, to screens indicating speeds or warning of heavy traffic. The task was to was to help them develop a new version of the control board that is used in some of their products. The reason for this is that their old control board is obsolete and the components that are on it, is no longer manufactured or in need to be renewed.

Title: Change Communication within organizations ? How perceptions differ between managers and employees in an organizational changeAuthor: Emma Ender & Fanny TeschTutor: Anne-Marie MorhedPurpose: The purpose of this thesis was to study and compare different perceptions of change communication between managers and employees within two smaller organizations. We wanted to examine how the communication process within the change was carried out. We also aimed to compare the results with change communication models of Johansson & Heide (2008) and Lewin (1951), and also existing concepts, to see if our result differed from earlier research. Our key questions to answer were: How do managers communicate a change to the employees in two smaller companies? How do the managers think that the employees perceive the information about the change? How do the employees perceive the information about the change? How does change models from previous research correspond to, or differ from the change process?Method/Material: The material used in this thesis consists of a total of twelve interviews with both managers and employees at two small companies.Main results: The main results shows that communicating a change is complex, and that it is difficult to create models and theories for the phenomenon, as each change is unique.