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Hybrid method for the prediction of thermo-acoustic waves in an annular gas turbine combustion chamber

The acoustic field in an annular gas turbine combustion chamber with thirty burners has been studied using a hybrid approach. The acoustic field was determined by solving an inhomogeneous wave equation. The acoustic sources were provided by a low Mach number flow solver. The main focus was to determine the influence of nonuniform behavior and interactions of neighboring burners. For this reason th

Adaptive Interference Cancellation Using Common-Mode Information in DSL

Exploiting the common-mode (CM) receive signal in wireline communication can yield significant improvements in terms of channel capacity compared to using only the differential-mode (DM) signal. Recently published, independent, scientific work proposed the employment of an adaptive CM-reference based interference canceller and reported performance improvements based on simulation results. Adaptive

Essays in Strategy-proof Social Choice Theory

This thesis consists of two separate papers in strategy-proof social choice theory. The first paper, “Generalizing the Gibbard-Satterthwaite theorem: Partial preferences, the degree of manipulation, and multi-valuedness”, generalizes the Gibbard-Satterthwaite theorem in three ways: firstly, it is proved that the theorem is still valid when individual preferences belong to a convenient class of par

A large metadata domain of Language Resources

The INTERA and ECHO projects were partly intended to create a critical mass of open and linked metadata descriptions of language resources, helping researchers to understand the benefits of an increased visibility of language resources in the Internet and motivating them to participate. The work was based on the new IMDI version 3.0.3 which is a result of experiences with the earlier versions and

The European Integration, Re-arrangement of Place and Space in the Nordic Countries

This paper is an exploratory discussion of place and space from a cultural geographic point of view. On the one hand it discusses the concept of place, trying to identify some of its characteristics connected to different Nordic understandings of landscape and place; this will take departure in people’s practice in place and landscape. It will on the other hand discuss the more abstract concept of

Evaluation and optimization of a Swedish Net ZEB - Using load matching and grid interaction indicators

Net Zero Energy Buildings, Net ZEBs, is one of many necessary measures for climate change mitigation as they may reduce the energy consumption in the building sector. The Net ZEB interacts with a grid infrastructure. It is therefore important to consider the interaction with the grid in the design phase. This paper reports an evaluation of a proposed design of a Net ZEB in the south of Sweden eva