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Spatio-temporal filtering methods for enhancement and separation of speech signals

In this paper, we give an overview of the background for, the ideas behind, and the challenges to be addressed in the project "Spatio-Temporal Filtering Methods for Enhancement and Separation of Speech Signals," which is funded by the Villum Foundation. The project aims at addressing the problem of enhancing and separating speech signals from noisy mixtures, a problem also known as the cocktail pa

Improving minimum flow rate in wireless mesh networks by effective placement of directional antennas

For some time, directional antennas have been considered to solve connectivity and interference issues in wireless networks. Several scenarios have been presented and often the conclusions drawn are positive, showing increase in capacity. However, to date there has been no effort to assess a holistic picture of the benefit/cost tradeoff and previous work mainly concerns either link scheduling or a

Försvunna kyrkor i Göteborg

Det försvunna fascinerar, ofta mer än det som finns i behåll. Bilden måste återskapas inom oss. Till ledning finns minnesbilder, rester av det försvunna, eller indirekta avtryck som foton, teckningar och beskrivningar. Att återskapa kräver efterforskningar och stimulerar fantasin. Särskilt lockande kan det vara att rekonstruera försvunna byggnader, konkreta avtryck av människor som levat tidigare.

A Comparative Study of LES Turbulent Combustion Models Applied to a Low Swirl Lean Premixed Burner

In this study we compare two types of Large Eddy Simulation (LES) turbulent combustion models with experimental data for a low swirl stabilized turbulent lean premixed flame. Such flames are a great challenge to numerical simulations since they are unsteady and sensitive to boundary conditions, and details of the experimental set-up. The two classes of LES turbulent combustion models considered ar

Green-glued laminated beams : High performance and added value

The work presented in this paper deals with the use of green gluing (also known as wet gluing) as a mean to overcome the difficulties in making use of side boards for structural applications. By manufacturing laminated beams from unseasoned side boards several advantages are obtained. Beams were manufactured from side boards of approximately 25 mm thickness. The board width was 120 mm. The boar

Walking away from a low-carbon economy?

Using the latest available data, this brief article attempts to provide the first regional decomposition analysis of CO2 emissions from fuel combustion. Covering eight regions of the world, determinants are estimated in relative and absolute terms for the period 1971-2010. We take the 2010 global surge in CO2 emissions as an entry point for the analysis. Overall, results show that most regions hav