• Publications
  • Influence
Time-varying Hurst exponent for US stock markets
In this work, the dynamical behavior of the US stock markets is characterized on the basis of the temporal variations of the Hurst exponent estimated with detrended fluctuation analysis (DFA) overExpand
Long-range correlations and asymmetry in the Bitcoin market
This work studies long-range correlations and informational efficiency of the Bitcoin market for the period from June 30, 2013 to June 3rd, 2017. To this end, the detrended fluctuation analysis (DFA)Expand
Short-term predictability of crude oil markets: A detrended fluctuation analysis approach
This paper analyzes the auto-correlations of international crude oil prices on the basis of the estimation of the Hurst exponent dynamics for returns over the period from 1987 to 2007. In doing so, aExpand
Adaptive control of feedback linearizable systems: a modelling error compensation approach
An adaptive output feedback controller for single input feedback linearizable systems is proposed, which avoids overparameterizations yielding an (n+1)-order compensator, where n is the system dimension. Expand
In vitro digestibility, physicochemical, thermal and rheological properties of banana starches.
Banana starches isolated from Enano, Morado, Valery and Macho cultivars exhibited Type III behaviour, attributed to the formation of a continuous phase complex three-dimensional amylose gel reinforced by swollen starch granules acting as fillers. Expand
A robust velocity field control
It is shown that semiglobal practical stabilization is achieved; that is, given any compact set of initial velocity field errors, there exist PI control gains which guarantee that the robot tracks a desired velocity field with arbitrary accuracy. Expand
On the PID tracking control of robot manipulators
We consider the problem of PID tracking control of robotics manipulators. Our objective is to prove that under classical PID control, semiglobal stability can be assured with arbitrary small outputExpand
Textural properties of alginate–pectin beads and survivability of entrapped Lb. casei in simulated gastrointestinal conditions and in yoghurt
Lactobacillus casei was entrapped in beads made with sodium alginate (A), amidated low-methoxyl pectin (P), and blends of A-P (1:2, 1:4, 1:6 ratios) by the extrusion technique. Diameter, sphericityExpand
Thermodynamic sorption properties and glass transition temperature of tamarind seed mucilage (Tamarindus indica L.)
Abstract Adsorption isotherms for spray-dried tamarind seed mucilage were determined at 20, 30 and 40 °C and fitted to GAB and Caurie sorption models. The sorption properties were estimated usingExpand
Physicochemical, digestibility and structural characteristics of starch isolated from banana cultivars.
X-ray diffraction indicated that the banana starches present a B-type crystallinity pattern, with slight difference in the crystallinity level, which can be useful to determine banana varieties for starch isolation with specific functionality. Expand