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Situated probing

In this position paper we present methodological considerations from a project in which we have collaborated with people with cognitive difficulties and university students. For people with considerable difficulties in communicating, a new means of expressing their dreams was required. Cultural probes were used to inspire, inform and surprise in the design process: situated probing.

Plant Major Intrinsic Proteins - natural variation and evolution

Popular Abstract in Swedish Livets minsta beståndsdel, cellen, omges av ett membran som avgränsar den från omvärlden. För att hålla den inre miljön kontrollerad måste cellen kunna styra transporten av olika ämnen över membranet, vilket görs med hjälp av olika proteiner. Dessa proteiner kan antingen vara energikrävande pumpar och transportörer som aktivt förflyttar substanser över membranet, eller Major Intrinsic Proteins (MIPs, also called Aquaporins, AQPs) are channel forming membrane proteins. Although initially functionally characterized and named after their water channeling property in human red blood cells, it has become increasingly evident that MIPs are present in all types of organisms and transport a variety of small, uncharged molecules besides water. MIPs have a highly conserve

A new approach to pipeline FFT processor

A new VLSI architecture for a real-time pipeline FFT processor is proposed. A hardware-oriented radix-22 algorithm is derived by integrating a twiddle factor decomposition technique in the divide-and-conquer approach. The radix-22 algorithm has the same multiplicative complexity as the radix-4 algorithm, but retains the butterfly structure of the radix-2 algorithm. The single-path delay-feedback a

Optical Studies of Single Quantum Dots

Popular Abstract in Swedish En halvledare är en kristall vars egenskaper till stor del bestäms av dess bandgap, som i någon mening kan ses som lägesenergin hos fria elektroner i kristallen. En kvantprick är en liten volym halvledarmaterial som är inbäddad i ett annat material med större bandgap. Det gör att volymen attraherar laddning eftersom elektroner (precis som allt annat) helst minimerar sinThis thesis presents spectroscopic studies of single self-assembled InP quantum dots (QDs). The electronic properties of these QDs have been studied by photoluminescence (PL) and scanning tunnelling luminescence (STL). The QDs were grown in the Stranski-Krastanow mode and were embedded in GaInP. This material is slightly n-type, giving a Fermi-level close to the conduction band edge at low temper