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Ermakov systems with multiplicative noise
(2014)
"Using the Euler-Maruyama numerical method, we present calculations of the Ermakov-Lewis invariant and the dynamic, geometric, and total phases for several cases of stochastic parametric oscillators, including the simplest ...
Generalized Thomas-Fermi equations as the Lampariello class of Emden-Fowler equations
(Elsevier, 2017)
"A one-parameter family of Emden-Fowler equations defined by Lampariello's parameter p which, upon using Thomas-Fermi boundary conditions, turns into a set of generalized Thomas-Fermi equations comprising the standard ...
Understanding the adsorptive and photoactivity properties of Ag-graphene oxide nanocomposites
(2013)
"Nanocomposites of graphene oxide (GO) and silver nanoparticles (AgNPs) were synthetized using a practical photochemical silver functionalization. Their photocatalytic activities were evaluated with two dyes, Rhodamine B ...
Adsorption of molecular gases on different porous surfaces using the statistical associating fluid theory variable range approximation
(2012)
"In the thermodynamic framework of coupled statistical associating fluid theory variable range (SAFTVR) 2D and 3D models we present the theoretical predictions of the adsorption isotherms in real physical units, as it is ...
N-step linear phase-shifting algorithms with optimum signal to noise phase demodulation
(2011)
"A common way to test an optical wavefront is to use a phase-shifting interferometer along with (for example) a three-step linear phase-shifting algorithm (PSA). The following fundamental question arises: what phase step ...
Periodic Sturm-Liouville problems related to two Riccati equations of constant coefficients
(Elsevier, 2010)
"We consider two closely related Riccati equations of constant parameters whose particular solutions are used to construct the corresponding class of supersymmetrically-coupled second-order differential equations. We solve ...
Supersymmetric free-damped oscillators: adaptive observer estimation of the Riccati parameter
(2006)
"A supersymmetric class of free damped oscillators with three parameters has been obtained in 1998 by Rosu and Reyes through the factorization of the Newton equation. The supple-mentary parameter is the integration constant ...
Detection of mixed-culture growth in the total biomass data by wavelet transforms
(2010)
"We have shown elsewhere that the presence of mixed-culture growth of microbial species in fermentation processes can be detected with high accuracy by employing the wavelet transform. This is achieved because the crosses ...
Supersymmetry of FRW barotropic cosmologies
(2006)
"Barotropic FRW cosmologies are presented from the standpoint of nonrelativis-tic supersymmetry. First, we reduce the barotropic FRW system of diferential equations to simple harmonic oscillator diferential equations. ...
Synchronization of the frenet-serret linear system with a chaotic nonlinear system by feedback of states
(2005)
"A synchronization procedure of the generalized type in the sense of Rulkov et al [Phys. Rev. E 51, 980 (1995)] is used to impose a nonlinear Malasoma chaotic motion on the Frenet-Serret system of vectors in the differential ...