Attributes remain to be of the utmost importance for the characterization of seismic data. Especially in the scale-range where tuning effects play, the understanding of what is happening, and the subsequent technology to extract the proper attributes from the huge seismic data-volumes remains current. This study starts with the analysis of a set of typical petrophysical log shapes. These log sh...

Quantization-based watermarking schemes are vulnerable to amplitude scaling. Therefore the scaling factor has to be accounted for either at the encoder, or at the decoder, prior to watermark decoding. In this paper we derive the marginal probability density model for the watermarked and attacked data, when the attack channel consists of amplitude scaling followed by additive noise. The encoder ...

Despite the steady increase in computing power many nonlinear partial differential equations still cannot be solved by brute-force numerical methods in acceptable time. However, often the method of multiple scales resulting in so-called amplitude equations can be used to first reduce the complexity of the problem. The amplitude equations give valuable mathematical insight and, moreover, can be ...

This study sought to investigate the relationships between clinical and neurophysiologic assessments of spasticity after injection of botulinum toxin-A in children with cerebral palsy. A total of 40 children were recruited. Clinical assessments included the modified Ashworth scale and modified Tardieu scale parameters R1, R2, and D. Neurophysiologic assessment included compound motor action pot...

Continuing research on scale interactions in turbulent boundary layers (TBLs) has revealed the modulation of small scales by large-scale motions. These large-scale structures encompass regions of negative and positive fluctuating velocity and are extensively described in the literature (Favre et al. 1967; Blackwelder and Kovasznay 1972; Brown and Thomas 1977; Wark and Nagib 1991; Ganapathisubra...