In computational science it is common to describe dynamic systems by mathematical models in forms of differential or integral equations. These models may contain parameters that have to be computed for the model to be complete. A formula, named the modified Kaufman algorithm, is proposed also it takes the separability into consideration.
Design and Characterization of RF-Power LDMOS Transistors
In mobile communication new applications like wireless internet and mobile video have increased the demand of data-rates. Therefore, new more wideband systems are being implemented. Power amplifiers in the base-stations that simultaneously handle these wideband signals for many terminals (handhelds) need to be highly linear with a considerable band-width.
Performance Studies of Fault-Tolerant Middleware
Today’s software engineering and application development trend is to take advantage of reusable software. Much effort is directed towards easing the task of developing complex, distributed, network based applications with reusable components. To relieve the task of the distributed systems’ developers, one could use middleware, i.e. a software layer
Contributions to Frequency Offset and Time Delay Estimation
The demand for reliable high rate and efficient communication is ever increasing. In this thesis we look at two diverse issues in such devices, as well as their feasible solutions. In recent years orthogonal frequency division multiplexing (OFDM) has gone from a promising data transmission technique to become a mainstream technique used in several current [...]
Implementation of a Pump Control System for a Wheel Loader Application
Today’s new developments strive for energy efficiency . Including the hydraulic side of industry. this report shows a new hydraulic concept when it comes to the control of cylinder loads in a wheel loader. The concept differs from today’s application, where the cylinderload is controlled via a valve, in the way that the load is solely [...]
Environmental Impacts of Dams
Title: Ecohydrologic impacts of dams: A global assessment This project aims to improve the understanding of how dams and reservoirs impact freshwater systems worldwide. The following questions were addressed specifically: 1) what are the spatial patterns and magnitudes of flow regulation and channel fragmentation by dams globally; 2) how are dam impacts distributed biogeographically, and [...]
Impact of Construction Material on Environment – (Steel & Concrete)
All around the globe the consumption of construction material by the construction industries is accumulating day by day resulting with an depletion of natural resources, increasing the environmental impacts and CO2 emissions all over the surroundings. Today steel and concrete are widely used and are dominating construction material in construction industry. These two construction materials [...]
Proposal For a Vision-Based Cell Morphology Analysis System
One of the fields where image processing finds its application but that remains as anunexplored territory is the analysis of cell morphology. This master thesis proposes a systemto carry out this research and sets the necessary technical basis to make it feasible, rangingfrom the processing of time-lapse sequences using image segmentation to the representation… Contents [...]
Magnetoelastic Coupling in NiMnGa Ferromagnetic Shape Memory Alloy
NiMnGa alloys have attracted extensive attention because their ferromagnetic characteristic provides an additional degree of freedom to control both the shape memory effect and the multi-stage phase transformations in this Heusler system. Technically, along with the large magnetic-field-induced strains… Contents 1 The Martensitic Transformation 1.1 Introduction 1.2 Diffusional Transformations 1.3 Diffusionless Transformations 1.4 Martensitic Transformations [...]
Retargeting a C Compiler for a DSP Processor
The purpose of this thesis is to retarget a C compiler for a DSP processor. Developing a new compiler from scratch is a major task. Instead, modifying an existing compiler so that it generates code for another target is a common way to develop compilers for new processors.This is called retargeting. This thesis describes how [...]