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The high time resolution of ultra-wideband (UWB) signals results in a large number of multipath components (MPCs) arriving at the receiver, which presents a source of diversity. In addition to this multipath diversity, there is also repetition diversity inherent in impulse radio (IR) UWB systems, since a number of pulses are transmitted for each information symbol. In order to make optimal use of

Grade changes in polyethylene reactors, i.e., changes of operating conditions, are performed on a regular basis to adapt to market demands. In this paper, a dynamic optimization procedure is presented built upon the Modelica language extended with Optimica constructs for formulation of optimization problems. A Modelica library for the Borstar R multistage polyethylene reactors at Borealis AB, cons

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Protection of systems with series compensated lines is considered to be one of the most difficult tasks for relay manufacturers and utility engineers. Protection and control of surrounding circuit elements, particularly transmission line protection, needs to be adapted to the variations introduced by these devices. Fixed series capacitors and thyristor controlled devices introduce harmonics and no

We have investigated the possibility of using a curved dipole antenna inside the mouth for the tongue controlled wireless devices in 2.45GHz ISM band. These devices can be interfaced with the wheelchair or the computer used by the paraplegic patients. Two antenna placement positions have been investigated: in front of the teeth and behind the teeth. The investigations were done through the FDTD si

Adaptive techniques such as gain scheduling, automatic tuning and continuous adaptation have been used in industrial single-loop controllers for about ten years. This paper gives a survey of the different adaptive techniques, the underlying process models and control designs. An overview of industrial products is also presented, which includes a fairly detailed investigation of four different adap

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The main aim of this project was to peel off the epitaxially grown nanowires (NWs) from their native substrate and transfer them to the cheaper carrier substrate in order to make solar cell device from transferred NWs. Potentially the peeling and transferring idea is about to decrease the cost of NWs growth by reusing the native substrate especially for expensive material such as InP and GaAs whic

This thesis aims to identify online branding channels used by SMEs and determine which of those channels are the most effective. For this, a quantitative study of four SME brands is conducted and their online branding efforts analyzed. The findings add to the existing theory in the field as well as propose a new framework for analyzing and classifying SMEs online branding channels. The gathered da

Sammanfattning Den här uppsatsen är en granskning av brittisk, svensk och kanadensisk upphovsrätt. Mer exakt utreder detta arbete de olika ländernas syn på parodier och hur dessa skyddas under respektive lands upphovsrättslag. För att få en bättre förståelse för om parodier kan kvalificeras som upphovsrättsliga verk, berör även denna uppsats vilka olika kriterier varje land har satt upp för att Summary This paper examines the copyright laws of the British, Swedish and Canadian systems. More precisely it investigates the different countries views on parodies and in what way they are or aren’t protected under their Copyright Act. To get a better understanding of parodies and how they can qualify as a copyright work, this paper also deals with the different requirement each country has set

The goal of this master thesis was to examine some of the available development tools for augmented reality in mobile applications. The best development tool were then used in development of an application for Android or iOS. The thesis has two main parts, the analysis of development tools and the application development. During the analysis ve dierent commercial development tools for augmented re

The possibility to print out metallic components with complex 3D-structures is could revolutionize the industry. In this master’s thesis the cause of process parameters have been investigated for three alloys; stainless steel, 316L, two nickel-based alloys, a derivative of Alloy 738 and 939. Microstructure, porosity, tensile testing, impact toughness, hardness and surface roughness was investigate

Value-at-Risk (VaR) forecasting in the context of Monte Carlo simulations is evaluated. A range of parametric models is considered, namely the traditional Generalized Autore- gressive Conditional Heteroscedasticity (GARCH) model, the exponential GARCH and the GJR-GARCH, which are put in the context of the Gaussian and Student-t distri- butions. The returns of the S&P 500 provide the basis for