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As global concern increases regarding pollution does the demand to develop more ecient and environmental friendlier propulsion system come in high focus. The main systems for transportation have been dominated by the Otto and Diesel engine for a long time, but both are trade-o in local and global emissions, i.e. NOX, soot, HC and CO versus CO2. This has driven the evolution to concepts as homogene
Wind power developments in cold and icing conditions pose new challenges to the wind power industry. Icing of wind turbines cause safety hazards, production losses and increased loads. This means that there is a need to develop a technique to quantify the icing climatology and corresponding eects on wind turbines to enable large scale wind power developments in the windy, sparesly populated areas
Energy use and energy feedback - An evaluation of Sweden’s largest energy saving experiment at E.ON E.ON Sverige AB is now performing Sweden’s largest energy saving experiment to see if its customers can reduce their electricity consumption just by visualizing it. The experiment turns to 10 000 of E.ON’s customers, having an annual consumption exceeding 10 000 kWh. Customers are equipped with a di
Background: Fibrinogen, a plasma protein essential for clot formation, can reach critically low levels during bleeding. The most commonly used method to determine fibrinogen is the photometric Clauss method. Intravenous colloid fluids can lead to falsely high values of fibrinogen when measured with the photometric Clauss method in comparison to an immunologic method. The main objective of this stu
In a context of environmental crisis and depletion of conventional energy resources, the current energy model based on fossil fuels is obsolete and needs to be redefined and redesigned. Hydrogen economy can represent a good alternative. To get it, developing carbon-free renewable hydrogen production processes will be crucial. This Master Thesis is focused on the ones using solar thermal energy to
Because of the increasing demand of low polluting and efficient diesel engines, numerous studies related to the different processes that take place in them are being carried out. This study treats the direct injection of fuel at high pressures (c.a. 1500 bar). Ignition is not simulated in this work since this is intended to be a previous step for future studies which include combustion. A combinat
The thesis is a qualitative study of ten psychotherapists’ experiences of psychotherapies with unsatisfying progress. Nine therapists were interviewed and one therapist wrote a case study. The therapists were asked to tell about a completed therapy which had left them with a sense of non-changing in respect of the patient. One of the psychotherapists lacked such experience. The main part of the th
A shock absorber is used in road vehicles to provide comfortable driving and to optimize the grip. The characteristics are advanced and it takes powerful tools to model a shock absorber. Öhlins Racing AB in Upplands-Väsby is looking for a tool to physically describe their products; in this thesis the task is performed by using the modeling language Modelica and the simulation tool Dymola. The mode
This thesis handles the problem with fluid selection in organic Rankine cycles application. The main goal was to write a program that based on user defined variables finds the maximum power output from a range of fluids. The program was programmed in Matlab and is coupled with REFPROP that return the fluids characteristics as enthalpy and entropy etc. The program is preloaded with the fluids foun
This study investigates the concept of ‘trust’ through exploring the relationship between answers to a standard survey questions and behaviour observed in an economical experiment. The survey question has been used in a wide range of reports and studies related to economic development. Therefore, ensuring that the survey question has high validity and that it accurately captures the level of trust
Summary This thesis is a study which primary objective is to examine the court´s risk assessment in legal custody, and contact disputes when a child is at risk of being harmed. My thesis also includes an interdisciplinary perspective to give a more detailed understanding of the process – of which consequences it entails if authorities and courts don´t make reliable risk assessments. Physical, psyc
In recent years, self-employment has emerged as an important avenue of economic livelihoods for immigrants in the western world, including the Chinese immigrants. The debate on immigrant self-employment has been widely discussed across academia and given a considerable attention by researchers, policymakers and governments. This study addresses the self-employment experience of Chinese immigrants
Purpose: The purpose of this thesis is to implement the One Supplier Capacity Process, a standardized method of working with capacities within IKEA. In order to do this the current way of working with capacities is investigated prior to the actual implementation of the process. The key contribution of the authors is the development of a template to support the implementation process and ensure acc
This master thesis is about the mathematical modeling of an inventory control system. The system is a single-echelon two-location system with one type of item. The locations replenish from a supplier that is assumed to have an ample stock. The demand is modeled as customers arriving according to a Poisson process with a known intensity and each customer only demands one item. In addition to replen
Background Lantmännen is one of Scandinavia’s largest and problem corporations in agriculture, food and energy. Since many of the corporations’ markets are mature and highly competitive there are low margins and hence a constant need for new and improved products, processes and services to maintain profitability. There is also a constant increase in complexity and cost of research and development,
Issue of study For the past ten years there has been a remarkable growth in the wind power industry. During 2003 - 2010 the production capacity increased by 456 % in Sweden, corresponding to total capacity of 2019 MW. An additional 754 MW was installed in 2011, and there is a planned capacity installation of 950 MW for 2012. This will, according to a prognosis from Svensk Vindenergi, generate a po
In July of 2009 punitive measures were taken by the Swedish government in order to deal with the somewhat new phenomenon known as grooming. The law, called “contact with children for sexual purposes” requires that the adult perpetrator contacts a child, with the purpose of committing sexual offences at a future meeting with the child. Although the law was received with gratitude from many parts of
Background and the Situation at Company X To remain competitive, it is essential for companies to take advantage of new business opportunities. However, seizing new opportunities often imply changes within the organization, and projects associated with change are bound to encounter resistance. To efficiently manage change and thereby avoid resistance and engage in measures that generate support fo
Gamification is a new trend that seeks to engage people and change their behaviour by implementing game-design thinking in non-game contexts. Recent analytics predicts that more than 70 % of the world’s 2000 largest organisations will have at least one gamified platform by 2014, which indicates that gamification is, and will continue to be, very important in the future of IT-strategy and digital m
To guarantee that the products in the IKEA catalogue are available when requested, IKEA needs to plan and secure capacity. IKEA has developed a process called ONE Supplier Capacity Process to solve supplier capacity issues in a more proactive way. The thesis is focused on suppliers’ in the category Frames and Mirrors with frames in Greater China. Purpose The purposes of the thesis are fourfold: •
