In this study the fractional controllers, which were realized by the different degrees of the Continued Fractional Expansion (CFE) method, were experimentally evaluated for the suppression of the vibrations of the second mode of a smart beam. The smart beam is equipped with PZT patches and these patches were used both as actuator and/or sensor. The control strategy was based on the fractional d...

An efficient and controllable process for separating copper cadmium was required to be developed due the high cost of long separation slag generated from zinc smelting process. Therefore, a new application deep by combining Circulating Flow Electric (CFE) cement method 2-hydroxy-5-nonyl formaldehyde oxime (M5640) extract method. The firstly removed ions utilizing M5640 obtained primary purifica...

A novel strategy to the development of digital pole-zero approximations to fractional-order integrators and differentiators is presented here. The scheme is based in the signal modeling techniques applied to deterministic signals, namely the Padé, the Prony and the Shanks methods. It is shown that the illustrated algorithms yield good results both in the time and the frequency domains. Moreover...

L. P. da Silva (http://orcid.org/0000-0003-2358-1277) ([email protected]) and J. A. Ramos, MARE – Marine and Environmental Sciences Centre, Dept of Life Sciences, Univ. of Coimbra, PT-3004-517 Coimbra, Portugal. – A. Pereira Coutinho, R. H. Heleno and LPdS, CFE – Centre for Functional Ecology, Dept of Life Sciences, Univ. of Coimbra, Calçada Martim de Freitas, PT-3000-456 Coimbra, Portugal. ...

We show that control function estimators (CFEs) of the firm production function, such as Olley-Pakes, may be biased when productivity evolves with a firmspecific drift, in which case the correctly specified control function will contain a firm-specific term, omitted in the standard CFEs. We develop an estimator that is free from this bias by introducing firm fixed effects in the control functio...

The electric power industry requires qualified personnel to support an optimal and safe operation. Since its beginnings, the IIE has been developing different training technologies and systems for CFE, the main utility for generation, transmission and distribution of electric power in Mexico. Some of these endeavors provide tailored instruction considering trainees traits such as learning style...

In the paper, problem of modeling thermal traces is addressed. The proposed model allows prediction behaviour a mark left by warm body on cooler ground. model, fractional order (FO) approach employed. This consideration an inital function (not only condition in one, initial time instant). uses scalar FO differential equation approximated with use Continuous Fraction Expansion (CFE) approximatio...

Bile salt hydrolases (BSH) results in microbes releasing enzymes conferring physiological functions for both the producing organisms and host subsequently lower serum cholesterol. In recent years, these attributes have generated interest towards screening of lactic acid bacteria (LAB) functional food production. this present study, lactobacilli (n=34) (13 L. casei, 6 paracasei, 11 brevis, 3 pen...

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We report in this communication the study of the intramolecular electron transfer through a 2,7-diethynylfluorenyl spacer in the Fe(II)/Fe(III) mixed-valent (MV) complex [(η(2)-dppe)(η(5)-C(5)Me(5))FeC≡C(2,7-C(21)H(24))C≡CFe(η(5)-C(5)Me(5))(η(2)-dppe)][PF(6)] (1[PF(6)]). The complex is generated in situ by comproportionation from its homovalent dinuclear Fe(II) and Fe(III) parents (1 and 1[PF(6...