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Browsing by UPV Unit "Universitat Politècnica de València. Departamento de Matemática Aplicada - Departament de Matemàtica Aplicada"

Now showing items 21-40 of 1870

A discrete mathematical model for addictive buying: Predicting the affected population evolution

García Ureta, Irene; Jódar Sánchez, Lucas Antonio; Merello Giménez, Paloma; Santonja, Francisco-José (Elsevier, 2011-10)

This paper deals with the construction of a discrete mathematical model for addictive buying. Firstly, identifications of consumers buying behavior are performed by using multivariate statistical techniques based on real ...
A domain-theoretic approach to fuzzy metric spaces

Ricarte Moreno, Luis Alberto; Romaguera Bonilla, Salvador (Elsevier, 2014-02)

We introduce a partial order (sic)(M) on the set BX of formal balls of a fuzzy metric space (X, M, Lambda) in the sense of Kramosil and Michalek, and discuss some of its properties. We also characterize when the poset (BX, ...
A dynamic trading rule based on filtered flag pattern recognition for stock market price forecasting

Arévalo, Rubén; García, Jorge; Guijarro, Francisco; Peris Manguillot, Alfredo (Elsevier, 2017)

[EN] In this paper we propose and validate a trading rule based on flag pattern recognition, incorporating im- portant innovations with respect to the previous research. Firstly, we propose a dynamic window scheme that ...
A dynamical comparison between iterative methods with memory: Are the derivatives good for the memory?

Cordero Barbero, Alicia; Jordan-Lluch, Cristina; Torregrosa Sánchez, Juan Ramón (Elsevier, 2017)

[EN] The role of the derivatives at the iterative expression of methods with memory for solving nonlinear equations is analyzed in this manuscript. To get this aim, a known class of methods without memory is transformed ...
A Factor Analysis Approach to Determining a Small Number of Parameters for Characterising Halls

Cerdá Jordá, Salvador; Giménez Pérez, Alicia; Romero Faus, José; Cibrián Ortíz de Anda, Rosa (Hirzel Verlag (S. Hirzel Verlag), 2011-05)

Specialist bibliographies reveal that there are many parameters for fully describing the acoustics of a hall. Are all of these parameters absolutely necessary? Although hall acoustics is a complex discipline, we can ...
A family of derivative-free methods with high order of convergence and its application to nonsmooth equations

Cordero Barbero, Alicia; Hueso Pagoaga, José Luís; Martínez Molada, Eulalia; Torregrosa Sánchez, Juan Ramón (Hindawi Publishing Corporation, 2012)

A family of derivative-free methods of seventh-order convergence for solving nonlinear equations is suggested. In the proposed methods, several linear combinations of divided differences are used in order to get a good ...
A family of dominant Fitting classes of finite soluble groups

Ballester-Bolinches, A; Martínez Pastor, Ana; Pérez-Ramos, M.D. (Cambridge University Press - Australian Mathematical Society, 1998-02)

[EN] In this paper a large family of dominant Fitting classes of finite soluble groups and the description of the corresponding injectors are obtained. Classical constructions of nilpotent and Lockett injectors as well as ...
A family of iterative methods with accelerated eighth-order convergence

Cordero Barbero, Alicia; Fardi, Mojtaba; Ghasemi, Mehdi; Torregrosa Sánchez, Juan Ramón (Hindawi Publishing Corporation, 2012)

We propose a family of eighth-order iterative methods without memory for solving nonlinear equations. The new iterative methods are developed by using weight function method and using an approximation for the last derivative, ...
A family of Kurchatov-type methods and its stability

Cordero Barbero, Alicia; Soleymani, Fazlollah; Torregrosa Sánchez, Juan Ramón; Haghani, F. Khaksar (Elsevier, 2017)

[EN] We present a parametric family of iterative methods with memory for solving of nonlinear problems including Kurchatov¿s scheme, preserving its second-order of convergence. By using the tools of multidimensional real ...
A family of modified Ostrowski's method with optimal eighth order of convergence

Cordero Barbero, Alicia; Torregrosa Sánchez, Juan Ramón; Vassileva, María Penkova (Elsevier, 2011-12)

In this paper, we derive a new family of eighth-order methods for obtaining simple roots of nonlinear equations by using the weight function method. Each iteration of these methods requires three evaluations of the function ...
A family of parametric schemes of arbitrary even order for solving nonlinear models

Cordero Barbero, Alicia; Torregrosa Sánchez, Juan Ramón; Vassileva, Maria P. (Springer-Verlag, 2017)

[EN] Many problems related to gas dynamics, heat transfer or chemical reactions are modeled by means of partial differential equations that usually are solved by using approximation techniques. When they are transformed ...
A family of seventh-order schemes for solving nonlinear systems

Abad Rodríguez, Manuel Francisco; Cordero Barbero, Alicia; Torregrosa Sánchez, Juan Ramón (Société des Sciences Mathématiques de Roumanie, 2014)

[EN] This paper focuses on solving nonlinear systems numerically. We propose an efficient family of three-step iterative schemes with seventh-order of convergence. The proposed methods are obtained by using the weight ...
A fixed point theorem for generalized contractions involving w-distances on complete quasi-metric spaces

Alegre Gil, Maria Carmen; Marín Molina, Josefa; Romaguera Bonilla, Salvador (SpringerOpen, 2014-02)

We obtain a fixed point theorem for generalized contractions on complete quasi-metric spaces, which involves w-distances and functions of Meir-Keeler and Jachymski type. Our result generalizes in various directions the ...
A fixed point theorem for preordered complete fuzzy quasi-metric spaces and an application

Castro Company, Francisco; Romaguera Bonilla, Salvador; Tirado Peláez, Pedro (SpringerOpen, 2014-03)

We obtain a fixed point theorem for a type of generalized contractions on preordered complete fuzzy quasi-metric spaces which is applied to deduce, among other results, a procedure to show in a direct and easy fashion the ...
A freshmen mentoring program at the Universitat Politècnica de València

Barrachina Civera, Xavier; Conejero Casares, José Alberto; García Félix, Vicenta Eloína (OmniaScience, 2011)

Purpose: We quantify the dedication of mentors and mentees in a double-mentor program for freshmen. We also analyze the fulfillment of the expectations of all the participants and the utility of each mentor during the ...
A front-fixing numerical method for a free boundary nonlinear diffusion logistic population model

Piqueras-García, Miguel Ángel; Company Rossi, Rafael; Jódar Sánchez, Lucas Antonio (Elsevier, 2017)

[EN] The spatial temporal spreading of a new invasive species in a habitat has interest in ecology and is modeled by a moving boundary diffusion logistic partial differential problem, where the moving boundary represents ...
A full probabilistic solution of the random linear fractional differential equation via the Random Variable Transformation technique

Burgos-Simon, Clara; Calatayud-Gregori, Julia; Cortés, J.-C.; Navarro-Quiles, A. (John Wiley & Sons, 2018)

[EN] This paper provides a full probabilistic solution of the randomized fractional linear nonhomogeneous differential equation with a random initial condition via the computation of the first probability density function ...
A fundamental Lagrangian approach to transformation acoustics and spherical spacetime cloaking

Tung ., Michael Ming-Sha (European Physical Society, 2012)

[EN] Transformation acoustics centers on the construction of advanced acoustic devices by combining mathematical transformation techniques with the engineering of acoustic metamaterials. We show how di¿erential-geometric ...
A genetic algorithm to calibrate dynamical systems: Confidence intervals for parameters and residuals

Caselles Moncho, Antonio; Micó, Joan C.; AMIGÓ BORRÁS, SALVADOR (Sociedad Española de Sistemas Generales, 2018)

[EN] This paper presents a genetic algorithm to calibrate dynamical systems that is able to calculate confidence intervals for the parameters of the system. As an application case is used to calibrate the system that ...
A GRASP for the Mixed Postman Problem

Corberán, A.; Marti, R.; Sanchís Llopis, José María (Elsevier, 2002)

[EN] Arc routing problems (ARPs) consist of finding a traversal on a graph satisfying some conditions related to the links of the graph. In the Chinese postman problem (CPP) the aim is to find a minimum cost tour (closed ...