Buscar
Mostrando ítems 61-70 de 252
Improvement and analysis of a pseudo random bit generator by means of cellular automata
(2010)
"In this paper, we implement a revised pseudo random bit generator based on a rule-90 cellular automaton. For this purpose, we introduce a sequence matrix HN with the aim of calculating the pseudo random sequences of N ...
A simple circuit with dynamic logic architecture of basic logic gates
(2010)
"We report experimental results obtained with a circuit possessing dynamic logic architecture based on one of the theoretical schemes proposed by H. Peng and collaborators in 2008. The schematic diagram of the electronic ...
Matrix approach of an encryption system based on cellular automata and its numerical implementation
(2012)
"The main components of an encryption system based on rule 90 cellular automata, i.e., two indexed families of permutations and a pseudorandom bit generator are implemented in a very xible way through a convenient matrix ...
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 ...
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 ...
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 ...
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 ...
A note on Verhulst's logistic equation and related logistic maps
(2010)
"We consider the Verhulst logistic equation and a couple of forms of the corresponding logistic maps. For the case of the logistic equation we show that using the general Riccati solution only changes the initial conditions ...
Eigenvalue problems, spectral parameter power series, and modern applications
(2015)
"Our review is dedicated to a wide class of spectral and transmission problems arising in di?erent branches of applied physics. One of the main di?culties in studying and solving eigenvalue problems for operators with ...