Sökresultat

Filtyp

Din sökning på "*" gav 530404 sökträffar

Widesight - a project aimed at improving peripheral vision

Our group of researchers from a variety of backgrounds has been investigating the possibility of improving vision for patients with central scotoma. So far, these patients have only been offered enlarging devices and training. We hope that new knowledge about the peripheral vision optics of the eye will result in improvements in image quality and that this can be helpful for people with low vision

No title

Relationerna mellan kyrka, stat och religiösa minoriteter i Sverige skildras från enhetskyrka till tolerans mot ”främmande” och samvetsfrihet under yttre religionsenhet. Därefter behandlas utvecklingen från religionsfrihet för svenska ”dissenters” till allmän religionsfrihet. De följande avsnitten ägnas förändringen från nationalkyrka till demokratisk statskyrka, och – från år 2000 – till en fri s

Biocatalysis in Organic Media: Parameters Influencing Activity, Stability and Enantioselectivity

Biocatalysis in organic media offers very attractive methods to prepare fine chemicals. The biocatalyst performance regarding activity, stability and enantioselectivity will determine the viability of the bio-process. Therefore, the understanding and optimization of the parameters influencing enzyme performance in organic solvents are extremely important. In this thesis, reactions catalysed by hyd

Efficient performance simulation of class D amplifier output stages

Straightforward simulation of amplifier distortion involves transient simulation of operation on a sine wave input signal, and a subsequent FFT of the output voltage. This approach is very slow on class D amplifiers, since the switching behavior forces simulation time steps that are many orders of magnitude smaller than the duration of one period of an audio sine wave. This work presents a method

On the Application of Elastic Scattering Analysis as a Complement to PIXE for the Determination of Light Elements in Thin Aerosol Samples

The potential of elemental analysis of light elements by measuring elastically scattered particles as a complement to PIXE (Particle Induced X-ray Emission analysis), when using a 3 MV electrostatic tandem accelerator is discussed. The discussion is based on protons and He ions with energies suitable for PIXE. Some experimental results of scattering yields are included.

Co-optimization of FFT and FIR in a delayless acoustic echo canceller implementation

In application specific implementation of digital signal processing algorithms optimization is important for a low power solution, not only on block level but also between blocks. This paper presents a co-optimization of a fast Fourier transform and a finite impulse response filter in a silicon implementation of an acoustic echo. The optimization gain can be measured in the number of operations an