Because of increasing demand of power on Malmbanan the capacity of the existing wires which supply the trains must be increased. This increases the stress on the existing poles and for this reason the system for supplying the loads along the railway is to be removed from the poles and be replaced by some other system. This thesis is a study on a two-level low voltage (1 kV and 0.4 kV) electrical system with the aim to investigate if it can be an alternative to the system used today taking into account the voltages, fault currents and costs.In this thesis the following tasks have been performed:? Gathering of data? Description of basic theory? Loadow and fault current calculations of the system with MATLAB? Life Cycle Cost estimate of the system? Analysis and conclusions from the resultsThe results show that the new system can be an alternative to replace today's system. The simulations and calculations show that the voltage drop is at an acceptable level and that the fault currents are large enough to supply a safe disconnection if a fault occurs at the far end of the system..

This two year master thesis examines the Swedish prison library's history during cell prison era.The investigation extends from the mid-1800s well into the 1900s. The purpose is to investigate theprison library by using a power concepts influenced by Michel Foucault. The questions revolvearound the ideas that formed the basis for the prison library and how the prison library was organizedin practice. Three types of sources are used to answer the essay questions and illustrate its pro -blems. Firstly, annual reports concerning the swedish prison system.

The objective of this thesis is to explore the prerequisites for children?s participation in the activities of the public library as expressed by six children?s librarians. Qualitative semi-structured interviews were carried out to investigate how the librarians interpreted the concept of participation and viewed power issues between children and adults. Further, difficulties and possibilities experienced in working with children?s participation and manifestations of children?s participation in everyday library work were also investigated.

Presently Sjöfartsverket do their maintenance according to a standard program, which means that every maintenance task will be done when the task limit occurs. This leads to a very long downtime for the aircraft in some occasions and very short downtime in others. The goal with this work is to reach a higher regularity of the aircraft operation. To reach a higher regularity for the operational needs, this work will present a hypothetic better maintenance concept for Swedish Maritime Administration. The concept is based on equalized maintenance structure, which means that every maintenance occasions are meant to take the same time to perform.

?Optimizing the workflow of hydraulic reservoir tanks? is a degree project made by Jonas Olsson, student within the faculty of technology and science, during spring semester 2012. The project comprise 22,5 ECTS.Volvo Construction Equipment, located in Arvika, was the client in this project. The mentor at Volvo CE was A?sa Barck, and the mentor at Karlstad University was Monica Jakobsson.

The aim of this study has been to create an understanding for the situation of an often forgotten group in foster care, the carers? own children. Our main focus has been the experience this group has of foster care, their experience of participation in caring for the foster children and their possible need of support and help. Our chosen method has been qualitative interviews with six adult children of foster carers, two men and four women. The theory used in this study has been Sense of Coherence.Our interviewees gave mainly a positive description of being part of a foster family even though they could give examples of difficult situation and of loss.

Title: Co-operative, prevent or complement? - An essay on the relationships between control systems. Authors: Kim Eriksson and Victoria KarlssonPurpose: The essay aims to describe the relations between control systems and how they related to each other, based on an operationalization of the control systems. Research question: What are the control systems relations to each other? With regards whether control systems co-operative, prevents and/or complement each other.Theoretical framework: The essays theoretical framework is based on Malmi and Browns (2008) description of five different control systems and control mechanisms associated with each control system.   Research methodology: The method was based on three different data collection methods. These methods were observations, documentation, and semi-structured interviews.Conclusions: It is concluded that the control systems has comprehensive relations. Control systems have more, than one, relation to each other..

Title: Co-operative, prevent or complement? - An essay on the relationships between control systems. Authors: Kim Eriksson and Victoria KarlssonPurpose: The essay aims to describe the relations between control systems and how they related to each other, based on an operationalization of the control systems. Research question: What are the control systems relations to each other? With regards whether control systems co-operative, prevents and/or complement each other.Theoretical framework: The essays theoretical framework is based on Malmi and Browns (2008) description of five different control systems and control mechanisms associated with each control system.   Research methodology: The method was based on three different data collection methods. These methods were observations, documentation, and semi-structured interviews.Conclusions: It is concluded that the control systems has comprehensive relations. Control systems have more, than one, relation to each other..

To start a company on the Internet is something that has appealed a lot of people during the last couple of years. Some of the companies have succeeded in their struggle but a lot of companies have failed to live out their ambition. This paper deals with the concept of e-commerce and aims to study whether or not the companies that has succeeded has made use of business models and what other factors that is important that you wont find in any written theory.The paper also aims to study the concept of business models and what a business model consists of. To be able to do this research we have interviewed three different companies that are all active in e-commerce and have survived for at least three years. Two of the companies are classical web shops that sell products to their customers and the last one is a site with articles about hardware and IT business in general.

This essay attempts to show a relativistic effect on the representation of motion situations. A summarize and defence for lingusitic relativity as scientifically valid and some taxonomic clarifications is initially presented. The relativistic effect is measured by using the elicitation tool Event Triads, developed at the Max Planck Institute for Psycholinguistics. The tool consists of a set of films displaying various motions. Test-subjects are asked to verbalize a situation in a way they see fit.

Uppsala University is involved in a large international collaborationto build the Laser heater system for the European Xray Free-electronlaser in Hamburg, Germany. In this thesis I describe a laser incouplingdevice into the vacuum chamber of this laser heater all the way fromthe specifications to a completed design.The laser heater is a very important part of the XFEL and thepart described here is a part of the vacuum system needed to couplean external laser into the electron vacuum system and align it withthe electron bunches in order to heat them. The task was started by studying the literature about the basic theory andthe design of vacuum systems. After this study and collection of ideaswith colleagues I started to prepare different concepts to solve thetask. The ideas can be put into two categories, in one case the couplingmirror is located inside the vacuum chamber and in the second caseoutside.

This study explores women?s experiences of the impact of remote work on work-life balance, and the potential consequences of telecommuting from a gender equality perspective. This investigation is contextualized by societal shifts post-pandemic, during which remote work has become increasingly prevalent. This transition raises new questions about the impact of home-based work on individuals? work-life balance, particularly for women who, according to prior studies, carry a greater responsibility for household tasks.

Personal assistants ' descriptions of their own professional role are usually removed for the benefit of users ' description of the profession. The purpose of this study is to investigate how the assistants perceive their profession by providing assistants a possibility to talk about their experiences of the profession. Data has been collected by twelve interviews with active working personal assistants aged 22-57 years. Assistants interviewed have different experiences and working with people with various disabilities. The method used is a qualitative method with a narrative analysis method, where the twelve interviews have been merged into four fictional stories.

The aim of this master?s thesis is to examine which ideas about the public library that appear in a selection of municipal library plans and to examine if these ideas are unanimous. The comprehensive questions are: Which ideas about the public library appear in each municipal library plan? How do the ideas agree in the different municipal library plans? The sub questions are: Which judgements of reality appear in the different library plans concerning each municipality and its library needs? How do the municipalities define the concept of development and future demands in the municipality on the basis of the judgements of reality? Which recommendations do the judgements of reality give and how is the plan of action that is established in each library plan justified? Which fundamental views of reality, i. e.

The following chapters examine landscape architecture which engages in contested territories with an emphasis on the way in which landscape architecture can engage with the issues of divided cities or landscapes with similar social, cultural and physical properties. The project focuses specifically on the potential landscape architecture has for promoting or aiding in the reconciliation process of these areas, by examining the following questions. How can landscape architecture be used to benefit the peace building process of divided cities and landscapes? How can landscape architecture be used in the process of promoting spatial reconciliation in the case of Belfast? The investigation begins with a description of the background to the project in Chapter 1, which functions as a brief introduction to the urban phenomena that is divided cities. It then goes on to introduce the different methods and data employed in order to answer the research questions in Chapter 2. After introducing the problem and the methodology, a global overview of divided cities is performed in Chapter 3. This chapter is divided into two sections.