Normal quantization or requantization noise is white, but the ear's sensitivity to low-level broad-band noise is not uniform with frequency. By adopting a suitable weighting curve to represent low-level noise audibility, one can design dithered requantizing noise shapers to approximate the inverse of the audibility curve and hence achieve the least audible noise penalty. If Fielder's modified E...

This work presents an experimental analysis of the friction response ice-rubber interface over five decades sliding velocity and temperature down to − 20 ∘C, combining in-situ contact visualisation simultaneous force measurements. Viscoelastic properties rubber were varied in terms glassy transition elastic modulus. Based on area measurements, adhesive viscoelastic contributions identified. Eve...

The objective of this study was to investigate the effect UV irradiation on fatigue life a bulk semi-crystalline polymer. Low-density polyethylene samples exposed different doses were tested. Fatigue indicator based dissipated energy per cycle found present best correlation with experimental results. A master curve unifying results for as-received and UV-aged materials obtained when subtracting...

In pH reactors, determination and control of pH is a common problem concerning chemical-based industrial processes due to the non-linearity observed in the titration curve. We introduced a modified multiregional fuzzybased control system to overcome the complexity of precise control of pH. In order to compensate for the experimental inaccuracies in measurements of pH in-situ values; an observer...

We explore maximal unitarity for nonplanar two-loop integrals with up to four massive external legs. In this framework, the amplitude is reduced to a basis of master integrals whose coefficients are extracted from maximal cuts. The hepta-cut of the nonplanar double box defines a nodal algebraic curve associated with a multiply pinched genus-3 Riemann surface. All possible configurations of exte...

The GUIDE-HF team1 should be congratulated on attempting to master congestion, a key driver of symptoms, signs, and progression heart failure. Controlling congestion is associated with an excellent prognosis,2 consideration for new universal definition failure.3 Symptoms signs are late, subjective, insensitive measures compared blood biomarkers, ultrasound, haemodynamics.3,4 Raised (>15 mm Hg) ...

BACKGROUND Transareola single-site laparoendoscopic thyroidectomy (TASSET) is a rapidly advancing minimally invasive procedure. The purpose of this study was to evaluate the learning curve for TASSET. SUBJECTS AND METHODS Forty-five consecutive patients were prospectively divided into group 1 (initial phase), group 2 (intermediate phase), and group 3 (advanced phase) according to their surgic...

The distribution of scientific citations for publications selected with different rules (author, topic, institution, country, journal, etc…) collapse on a single curve if one plots the citations relative to their mean value. We find that the distribution of "shares" for the Facebook posts rescale in the same manner to the very same curve with scientific citations. This finding suggests that cit...