Use of cookies

Lund University uses cookies to ensure that the website functions properly and to improve your experience.

Read more in our cookie policy

Search results

Filter

Reset filter

Filetype

Your search for "*" yielded 532996 hits

Quantum dots-in-a-well infrared photodetectors for long wavelength infrared detection

We report on a quantum dots-in-a-well infrared photodetector (DWELL QDIP) grown by metal organic vapor phase epitaxy. The DWELL QDIP consisted of ten stacked InAs/In0.15Ga0.85As/GaAs QD layers embedded between n-doped contact layers. The density of the QDs was about 9 x 1010 cm-2 per QD layer. The energy level structure of the DWELL was revealed by optical measurements of interband transitions, an

It takes a winner to take his share

Novelty detection is based on the creation of a space with similarity metric. It is discussed that the design of a neural detector is a compromise between promptness, universatility, robustness and sensitivity. The feed-forward topology is chosen from three alternatives for its ability to design that compromise by applying structural redundancy. A generic FPGA implementation supports the use in ad

Associative Polymer-Polymer and Polymer-Surfactant Systems: Phase Behaviour and the Influence of Chemical Reactions

Aqueous mixtures of two non-ionic polymers, poly(acrylic acid) (PAA) and the amphiphilic triblock copolymer, (EO)27(PO)67(EO)27, known by its trade name Pluronic® P104, showed an associative phase separation (miscibility gap), which decreased with the decrease of PAA length. It was found that PAA is a much less selective “solvent” to P104 molecules than water. P104 aggregates are disintegrated and

NorduGrid, the middleware and related projects

NorduGrid is a collaboration established in 2003 by five Nordic research groups, aiming to develop and support the grid middleware developed by the namesake project in 2002. This middleware became known as the NorduGrid's Advanced Resource Connector (ARC), widely respected for its light-weightiness combined with solid and reliable performance. Simplicity and yet remarkable reliability of this midd

Biblical Chaos Dragons – and Indo-European Ones

One of the instances that have often been suggested as a possible link between Indo-European and biblical traditions and thought constructs is that of the battle against the dragon or sea monster – a special instance of the Chaoskampf motif. Suggestions in this direction have been put forth by Nicolas Wyatt and by Ajoy Kumar Lahiri, who have argued that Semitic traditions concerning the divine bat

Building shielding loss measurements and modelling at the 5 GHz band in office building areas

This paper presents narrowband path loss measurements carried out at the 5.1 GHz band. The focus has been on building-shielding loss in office-building areas. Both azimuth and elevation dependence have been studied. The measurement campaign was performed in a multi-storey building on three different floors in an indoor office environment. A helicopter was used to simulate a mobile satellite system