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Analysis of radio wave propagation for ISM 2.4 GHz wireless sensor networks in inhomogeneous vegetation environments
(MDPI, 2014)
info:eu-repo/semantics/article,
The use of wireless networks has experienced exponential growth due to the improvements in terms of battery life and low consumption of the devices. However, it is compulsory to conduct previous radio propagation analysis ...
Singular reduction of resonant Hamiltonians
(IOP PublishingLondon Mathematical Society, 2018)
Artículo / Artikulua,
We investigate the dynamics of resonant Hamiltonians with n degrees of freedom to which we attach a small perturbation. Our study is based on the geometric interpretation of singular reduction theory. The flow of the ...
Innovación metodológica para desarrollar y evaluar competencias transversales clave en educación secundaria. Aplicación en el ámbito de Tecnología
(2017)
info:eu-repo/semantics/doctoralThesis,
Al menos desde que en 2006 se publicara la recomendación del Parlamento Europeo y del Consejo sobre las competencias clave para el aprendizaje, entendemos que el paradigma de los aprendizajes y las enseñanzas por competencias ...
Scalability approaches for causal multicast: a survey
(Springer, 2016)
info:eu-repo/semantics/article,
Many distributed services need to be scalable: internet search, electronic commerce, e-government... In order to achieve scalability those applications rely on replicated components. Because of the dynamics of growth and ...
New series expansions of the 3F2 function
(2015)
Artículo / Artikulua,
We can use the power series definition of 3F2(a1, a2, a3; b1, b2; z) to compute this function for
z in the unit disk only. In this paper we obtain new expansions of this function that are convergent
in larger domains. ...
Avoiding the order reduction when solving second-order in time PDEs with Fractional Step Runge–Kutta–Nyström methods
(Elsevier, 2016)
info:eu-repo/semantics/article,
We study some of the main features of Fractional Step Runge–Kutta–Nyström methods when they are used to integrate Initial–Boundary Value Problems of second order in time, in combination with a suitable spatial discretization. ...
High order Nyström methods for transmission problems for Helmholtz equation
(Springer, 2016)
info:eu-repo/semantics/bookPart,
We present super-algebraic compatible Nyström discretizations for the four Helmholtz boundary operators of Calderón’s calculus on smooth closed curves in 2D. These discretizations are based on appropriate splitting of the ...
Convergent and asymptotic expansions of solutions of differential equations with a large parameter: Olver cases II and III
(Rocky Mountain Mathematics Consortium, 2015)
Artículo / Artikulua,
This paper continues the investigation initiated in [Lopez, 2013]. We consider the asymptotic
method designed by F. Olver [Olver, 1974] for linear differential equations of the second
order containing a large (asymptotic) ...
Asymptotic behaviour of the Urbanik semigroup
(Elsevier, 2015)
Artículo / Artikulua,
We revisit the product convolution semigroup of probability densities ec(t); c >
0 on the positive half-line with moments (n!)c and determine the asymptotic
behaviour of ec for large and small t > 0. This shows that (n!)c ...
Modified Douglas splitting methods for reaction–diffusion equations
(Springer, 2017)
info:eu-repo/semantics/article,
We present modifications of the second-order Douglas stabilizing corrections method, which is a splitting method based on the implicit trapezoidal rule. Inclusion of an explicit term in a forward Euler way is straightforward, ...