In the approach presented here we combine theoretic aspects and experimental results in order to obtain threefold information on intermittency and edge localized mode (ELM) dynamics using: a) multifractal analysis, b) level-crossing properties of plasma density time series and c) stochastic catastrophy theory (CT). Intermittency properties of the MAST spherical tokamak (L-, Hand dithering H-mod...

Seismic data acquisition in marine environments is a costly process that calls for the adoption of simultaneous-source or randomized acquisition an emerging technology that is stimulating both geophysical research and commercial efforts. Simultaneous marine acquisition calls for the development of a new set of design principles and post-processing tools. In this paper, we discuss the properties...

The automatic recognition of MP3 compressed speech presents a challenge to the current systems due to the lossy nature of compression which causes irreversible degradation of the speech wave. This article evaluates the performance of a recognition system optimized for MP3 compressed speech with current state-of-the-art acoustic modelling techniques and one specific front-end compensation method...

Continuous tone images must be halftoned to be displayed on binary output devices such as printers. The ordered dither algorithm is a popular approach to halftoning. This algorithm uses a threshold matrix to approximate gray scale values. The arrangement of thresholds in the matrix determines texture artifacts introduced into the halftoned image. Thus, the challenge of research in ordered dithe...

In this article measurements of small scale electron density fluctuations in dithering high confinement ~H!-mode plasmas obtained by collective scattering of infrared light are presented. A scan of the fluctuation wavenumber was made in a series of similar discharges in the Wendelstein 7-AS ~W7-AS! stellarator @H. Renner et al., Plasma Phys. Control. Fusion 31, 1579 ~1989!#. The experimental se...

Deep neural networks (DNN) consist of layers neurons interconnected by synaptic weights. A high bit-precision in weights is generally required to guarantee accuracy many applications. Minimizing error accumulation between also essential when building large-scale networks. Recent demonstrations photonic are limited due crosstalk and the sensitivity optical components (e.g., resonators). Here, we...

In this paper, a digitally controlled boost DC-DC power converter featuring high-resolution Dyadic Digital Pulse Width Modulator (DDPWM) is proposed to achieve Limit-Cycle oscillations (LCOs)-free operation, high DC accuracy, low output voltage ripple at switching frequency. The effectiveness of the DDPWM in suppressing onset LCOs, increasing and reducing verified by both Simulink/Modelsim co-s...

Linearity is a critical measurement for overall performance of digital-to-analog converters (DAC) in mixed-signal system-on-chips (SoCs). Device parameters become more difficult to control due to variations from fabrication process with deep sub-micron technology. Such parameters also continue to degrade after fabrication as time elapses. Process variations of DACs are major source of non-linea...