Listar Dpto. Ingeniería Matemática e Informática - Matematika eta Informatika Ingeniaritza Saila por fecha de publicación
Mostrando ítems 21-40 de 82
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Eventual consistency: origin and support
Eventual consistency is demanded nowadays in geo-replicated services that need to be highly scalable and available. According to the CAP constraints, when network partitions may arise, a distributed service should choose ... -
Optimal monotonicity-preserving perturbations of a given Runge–Kutta method
Perturbed Runge–Kutta methods (also referred to as downwind Runge–Kutta methods) can guarantee monotonicity preservation under larger step sizes relative to their traditional Runge–Kutta counterparts. In this paper we study ... -
Decoupling mixed finite elements on hierarchical triangular grids for parabolic problems
In this paper, we propose a numerical method for the solution of time-dependent flow problems in mixed form. Such problems can be efficiently approximated on hierarchical grids, obtained from an unstructured coarse ... -
Innovación metodológica para desarrollar y evaluar competencias transversales clave en educación secundaria. Aplicación en el ámbito de Tecnología
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 ... -
Un algoritmo distribuido de detección y resolución de interbloqueo con coste lineal y carácter dinámico
En esta tesis se presenta un algoritmo para la detección y resolución de interbloqueos en sistemas distribuidos para el modelo de solicitud único recurso. El algoritmo resuelve todos los interbloqueos que aparecen en el ... -
Optimization and design of wireless systems for the implementation of context aware scenarios in railway passenger vehicles
In this paper, intra-wagon wireless communication performance is analyzed, in order to account for inherent scenario complexity in the deployment phase of wireless systems toward the implementation of a context-aware ... -
Spatial characterization of radio propagation channel in urban vehicle-to-infrastructure environments to support WSNs deployment
Vehicular ad hoc Networks (VANETs) enable vehicles to communicate with each other as well as with roadside units (RSUs). Although there is a significant research effort in radio channel modeling focused on vehicle-to-vehicle ... -
Challenges in wireless system integration as enablers for indoor context aware environments
The advent of fully interactive environments within Smart Cities and Smart Regions requires the use of multiple wireless systems. In the case of user-device interaction, which finds multiple applications such as Ambient ... -
A simplification of the stationary phase method: application to the Anger and Weber functions
The main difficulty in the practical use of the stationary phase method in asymptotic expansions of integrals is originated by a change of variables. The coefficients of the asymptotic expansion are the coefficients of the ... -
Convergent expansions of the incomplete gamma functions in terms of elementary functions
We consider the incomplete gamma function γ(a,z) for Ra>0 and z∈C. We derive several convergent expansions of z−aγ(a,z) in terms of exponentials and rational functions of z that hold uniformly in z with Rz bounded from ... -
Analytic formulas for the evaluation of the Pearcey integral
We can find in the literature several convergent and/or asymptotic expansions of the Pearcey integral P(x, y) in different regions of the complex variables x and y, but they do not cover the whole complex x and y ... -
From start to finish: teenagers on the autism spectrum developing their own collaborative game
Purpose: The purpose of this paper is to investigate how teenagers on the autism spectrum respond to their involvement in the creation of a collaborative game, meeting the curriculum requirements in programming at secondary ... -
Representations of hypergeometric functions for arbitrary parameter values and their use
Integral representations of hypergeometric functions proved to be a very useful tool for studying their properties. The purpose of this paper is twofold. First, we extend the known representations to arbitrary values of ... -
Modified Douglas splitting methods for reaction–diffusion equations
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, ... -
Construction of additive semi-implicit Runge-Kutta methods with low-storage requirements
Space discretization of some time-dependent partial differential equations gives rise to systems of ordinary differential equations in additive form whose terms have different stiffness properties. In these cases, implicit ... -
Implementation of wireless sensor network architecture for interactive shopping carts to enable context-aware commercial areas
An interactive shopping cart to enable context aware environments within large commercial areas is presented. A wireless sensor network was designed, with specific nodes embedded within the shopping carts and infrastructure ... -
Holographic acoustic elements for manipulating levitating particles. Applications in human-computer interaction
En esta tesis doctoral demostramos simultáneamente atrapamiento 3D, traslación y rotación de las partículas utilizando dispositivos de una sola cara. Esto se logra mediante el ajuste de manera óptima los retardos de fase ... -
Designing and implementing digital educational tools for children and youth with special needs using natural interfaces
Esta tesis se centra en el potencial pedagógico de Interfaces Naturales de Usuario (NUIs) y su aplicación en distintos ámbitos educativos. Las NUIs son interacciones remotas basadas en movimientos gestuales del cuerpo y ... -
Evaluation of deployment challenges of wireless sensor networks at signalized intersections
With the growing demand of Intelligent Transportation Systems (ITS) for safer and more efficient transportation, research on and development of such vehicular communication systems have increased considerably in the last ... -
New multiplexing structures for fiber optic sensors
El campo de la fibra óptica ha sufrido una rápida evolución durante las últimas décadas debido a sus buenas prestaciones en aplicaciones de telecomunicaciones. Aprovechando este avance científico y técnico en componentes ...