In this work we study the periodic orbits which bifurcate from all zero-Hopf bifurcations that an arbitrary Kolmogorov system of degree 3 in R3 can exhibit. The main tool used is averaging theory.

Feedback with Carry Shift Registers (FCSR) were introduced by M. Goresky and A. Klapper in 1993. They are very similar to classical Linear Feedback Shift Registers (LFSR) used in many pseudorandom generators. The main difference is the fact that the elementary additions are not additions modulo 2 but with propagation of carries. In this paper we propose a new generator designed from a FCSR auto...

Recently, flexible triboelectric nanogenerators (TENGs) have gained significant interest as a promising autonomous technology for harvesting abundant mechanical energy and powering portable electronic devices. In this work, high-performance single-electrode TENG (SETENG) is presented with highly conductive carbon cloth (CC) textile electrode an encapsulating material based on polydimethylsiloxa...

We present a new approach to detect projective equivalences and symmetries between two rational parametric 3 D curves properly parametrized. In order do this, we introduce functions that behave nicely for Möbius transformations, which are the transformations in parameter space associated with curves. The found by first computing gcd of polynomials built from these functions, then searching spec...

This paper proposes a control scheme for N-DoF robotic manipulator in joint-regulation motion problem, dealing with disturbances (as e.g. exogenous forces, unmodelled dynamics) that hinder task fulfilment, and also considering not all the required states are available online. Existing literature tackles this problem through Disturbance Observer (DO) strategies which imply complex analysis desig...

Mid-infrared laser absorption imaging of flame temperature and species concentration is expanded to three dimensions with linear tomographic methods using Tikhonov regularization. A spatial convolution two small-scale (< cm) laminar Bunsen-style flames, fueled by either ethylene or ethane, comprised the target flowfields. The doublets were alternately backlit tunable radiation from a quantum ca...

A methodology for the production of PbSe targets 79Se neutron capture cross section studies is presented. material was synthesized by direct reaction its constituents at high temperature, and characterized X-ray diffraction. Thin targets, produced experiments with surrogate method, were obtained applying a physical vapor deposition technique, their morphology composition analyzed fluorescence, ...

• Preparation of Li doped Cu2O films by reactive magnetron sputtering. High optical transmittance and phase purity in highly films. acceptor density correlated with high doping concentrations. Lithium cuprous oxide ( C u 2 O : L i ) were deposited on quartz substrates direct current co-sputtering copper targets. X-ray diffraction (XRD), secondary ion mass spectrometry (SIMS), Rutherford backsca...

This paper presents an investigation of the event-triggered control problem for active suspension system featuring a networked communication architecture and Dynamic Output Feedback Controller (DOFCs) while taking into account possibility failure in actuators. The event-triggering condition determines when it is necessary to transmit observed variables plant controller, order not saturate netwo...