coronal T2 coronal FLAIR SOS 12.8/13.6 12.5/11.4 2x 14.8/17.3 14.5/13.2 3x 19.8/24.8 14.8/12.5 4x 22.9/25.8 16.1/14.3 Table 1: SNR (reader1/reader2) coronal T2 coronal FLAIR SOS 2.9/3.0 2.7/2.9 2x 2.8/2.6 2.1/2.2 3x 2.3/2.4 1.4/1.9 4x 2.0/2.0 1.1/1.3 Table 3: average qualitative scoring (reader1/reader2); (scoring: 1-poorly defined, 2-seen, 3-well defined); (green-diagnostic quality; yellowsome...

The subjective effects of controlled low frequency limitation of the audio bandwidth on assessment of audio quality were studied. The investigation was focused on the standard 5.1 multichannel audio set-up (Rec. ITU-R BS.775-1) and limited to the optimum listening position. The effect of video presence on audio quality assessment was also investigated. The results of the formal subjective test ...

New display principles aim at supreme image quality. The temporal aspects of these devices sometimes remain underexposed in the literature, and the paper presents an overview of new artifacts and possible remedies with signal processing.

UMTS receivers are mobile devices, which should have a low energy consumption and operates in a frequently changing environment. The idea of this paper is to adapt the amount of signal processing for the reception within an UMTS mobile to this changing environment. In this way the amount of signal processing can be decreased for a good channel to decrease the energy consumption and for a bad ch...

One important factor that can give decision making groups an edge over individual decision makers is the amount and diversity of decision-relevant information held by group members. Prior to group discussion, some of such information may be held uniquely by one or more members (unshared information) while other may be common among all members (shared information). How efficiently groups exchang...

The purpose of this paper is to review the state of the art techniques in signal processing for automatic classification of power quality events and to give a sign of the next trends. The time when power quality monitoring equipment just takes pictures of raw waveforms has gone. Nowadays, power quality monitoring systems are becoming able to identify and classify events automatically in order t...

In this paper we provide a theoretical discussion of the impact of uncertainty in quality measurement on the expected benefits of including biometric signal quality measures in classification. While an ideal signal quality measure should be a precise quantification of the actual signal properties relevant to the classification process, a real quality measurement may be uncertain. We show how do...

In analyzing a signal, especially a non-stationary signal, it is often necessary the desired signal to be segmented into small epochs. Segmentation can be performed by splitting the signal at time instances where signal amplitude or frequency change. In this paper, the signal is initially decomposed into signals with different frequency bands using wavelet transform. Then, fractal dimension of ...

We propose adaptive bandwidth provisioning schemes enabling quality of service (QoS) guarantees. To this end, we exploit periodic measurements and traffic predictions to capture closely traffic dynamics. We make use of the Gaussian traffic model providing bounds for QoS to derive the associated bandwidth demands. Moreover, special attention is paid to alleviating some typical problems with adap...