2,931 research outputs found
The Sustainable Approach to Corporate Social Responsibility: A Global Analysis and Future Trends
Due to the process of globalization, companies are obligated to observe corporate social responsibility and best practices from a sustainability approach towards their stakeholders and society. The explicit aim is to determine the relevance of the corporate social responsibility (CSR) and its relationship with sustainability, in order to establish trends and future lines of research. The evolution of global research on this subject has been studied from 2001 to 2018. For this purpose, a bibliometric analysis of 1832 articles has been applied, obtaining results of the scientific productivity of the journals, authors, institutions, and countries that contribute to this research. Evidence shows a growing interest in studying the relationship between socially responsible practices and the dimension of sustainability. The main category is Business, Management, and Accounting. The most productive journals are the Journal of Business Ethics and Sustainability. The authors with the most articles are García-Sánchez, Moneva, and Moratis, while Kolk is the most cited. The most prolific institution is the University of Salamanca. The United States is the country with the most publications and quotes. France and China are the countries with the largest number of international collaborations in their work. Global research has been on an upward trend with optimal publication rates in recent years
Film Promotion in the Digital Universe. The End of the Cinema Exhibition in Spain.
Este artículo es un resumen de una investigación sobre la situación de la promoción, distribución y exhibición cinematográfica en España. Abordamos las nuevas formas de promoción y exhibición y el nuevo modelo de espectador/audiencia en el mundo digital que nos rodea.This article is a research on the status of the promotion, distribution and exhibition in Spain. Tackling the new forms of promotion and exhibition and the new model of viewer/spectator/audience in the Digital Universe
Construction of higher-order curl-conforming finite elements and its assembly
Different choices are available when constructing vector finite element bases in real coordinates. In this communication, two different designs of higher-order curl-conforming basis functions are introduced and explained, showing the particularities of its assembly. Tetrahedra and hexahedra are used as element shapes to assess the effect of triangular and quadrilateral faces on the two considered constructions of basis functions. A comparison of their robustness in terms of the condition number of the finite element matrices for a number of distortions is includedMinisterio de Ciencia y Tecnología, Grant/Award Numbers: TEC2013- 47753-C3, TEC2016-80386-P; Ministerio de Educación, Cultura y Deporte, Grant/Award Number: FPU14/0374
Adaptive Semi-Structured Mesh Refinement Techniques for the Finite Element Method
The adaptive mesh techniques applied to the Finite Element Method have continuously
been an active research line. However, these techniques are usually applied to tetrahedra. Here,
we use the triangular prismatic element as the discretization shape for a Finite Element Method
code with adaptivity. The adaptive process consists of three steps: error estimation, marking, and
refinement. We adapt techniques already applied for other shapes to the triangular prisms, showing
the differences here in detail. We use five different marking strategies, comparing the results obtained
with different parameters. We adapt these strategies to a conformation process necessary to avoid
hanging nodes in the resulting mesh. We have also applied two special rules to ensure the quality of
the refined mesh. We show the effect of these rules with the Method of Manufactured Solutions and
numerical results to validate the implementation introduced.This work has been financially supported by TEC2016-80386-
An interface between an hp-adaptive finite element package and the pre- and post-processor GiD
An interface between GiD, the interactive graphical user interface used for numerical simulations, developed at the International Center for Numerical Methods in Engineering (CIMNE) of the Universidad Politécnica de Cataluña and the Geometrical Modeling Package (GMP) of the fully automatic hp-adaptive finite element (FE) software, developed at the Institute for Computational Engineering and Sciences (ICES) of the University of Texas at Austin, is presented. GiD is used to construct a tessellation of the problem domain into FE-like regions (blocks in GMP terminology), and the interface obtains and transfers all the topological and geometrical information to GMP. Then, GMP automatically constructs a parameterization for each FE-like region of the GMP mesh, which later can be used to generate the actual FE-mesh and support geometry updates during mesh refinements
Método de Elementos Finitos hp con Adaptabilidad Automática Orientada a un Objetivo para Problemas Abiertos en 2D
In this paper, we describe a fully automatic goaloriented hp-adaptive Finite Element strategy, which is applied to open problems (radiation and scattering). The methodology produces exponential convergence rates in terms of an upper bound of an user-prescribed quantity of interest (in our case, the S-parameter, the far radiated field or far scattering field) against the problem size (number of degrees of freedom). We illustrate the efficiency of the method with 2D numerical simulations of open problems (radiation and scattering). Applications include the far scattering (radiated) field by an object (antenna) and the computation of mutual coupling of the antennas (S-parameters). Results show that self-adaptive goal-oriented hp obtains more accuracy in the quantity of interest than self-adaptive energynorm hp with the same number of degrees of freedom
Atomistic and electronic structure of antisite defects in yttrium aluminum garnet: density functional study
First-principles density-functional theory calculations have been performed on the atomistic structure, electronic structure, and distribution of antisite defects (AD) in yttrium aluminum garnet (YAG) Y3 Al5 O12. The formations of one and two antisite defects per unit cell are endothermic and the formation energy per defect is lower in 2AD than in 1AD. In the most stable 1AD structure, Y and Al are as close as possible and two oxygen atoms become unbound to Al rising the energy of their (highest) valence levels and introducing a defect level in the gap 0.25 eV above the top of the perfect YAG valence band. The binding energy between the individual substitutional defects YAl and AlY to form 1AD is 0.74 eV. The most stable 2AD structure is made of two single ADs linked together with one AlO6 moiety and it has basically the same electronic structure as the most stable 1AD; it is the only 2AD structure that preserves the inversion center with respect to the unit-cell center. In this case, the binding energy between two single ADs is 0.22 eV
Second-Order Nedelec Curl-Conforming Prismatic Element for Computational Electromagnetics
A systematic approach to obtaining mixed-order curl-conforming basis functions for a triangular prism is presented; focus is made on the second-order case. Space of functions for the prism is given. Basis functions are obtained as the dual basis with respect to suitably discretized Nedelec degrees of freedom functionals acting on elements of the space. Thus, the linear independence of the basis functions is assured while the belonging of the basis to the a priori given space of functions is guaranteed. Different strategies for the finite element assembly of the basis are discussed. Numerical results showing the verification procedure of the correctness of the implemented basis functions are given. Numerical results about sensibility of the condition number of the basis obtained concerning the quality of the elements of the mesh are also shown. Comparison with other representative sets of basis functions for prisms is included.This work was supported by "DiDaCTIC: Desarrollo de un
sistema de comunicaciones inalambrico en rango THz integrado de alta tasa de
datos"; TEC2013-47753-C3, CAM S2013/ICE-3004 "DIFRAGEOS" projects
and "Ayudas para contratos predoctorales de Formación del Profesorado
Universitario FPU
Alfabetización, oralidad y participación. Reflexiones sobre una experiencia en Nicaragua
En los últimos años, la alfabetización de personas adultas
contempla una preocupación notable sobre la metodología que se lleva a cabo
para alfabetizar en diferentes contextos. La propuesta que a continuación se
presenta, invita a tener en cuenta, además, otros factores en el complejo objetivo
de alfabetizar a las personas adultas: oralidad, participación y Pedagogía
del Amor se presentan como respuestas alternativas para el desarrollo de procesos
alfabetizadores. Se trata de enriquecer estos momentos pedagógicos y
sociales partiendo del bagaje experiencial del educando, de la capacidad de
comunicación oral que posee y de la posibilidad de hacer partícipe a toda la
comunidad a participar de él.
Analizaremos el caso concreto de alfabetización de personas adultas
en Nicaragua que desarrolla la Asociación de Educación Popular Carlos Fonseca
Amador (AEPCFA), como ejemplo de una red que liga relaciones humanas
y pedagógicas.In the last years, adult literacy is concerned on methodological
issues regarding literacy processes in different contexts. The proposal that is presented in this paper is an invitation to take into account other elements
in the complex process to help adults to become literates: orality, participation
and Pedagogía del Amor are presented as alternatives responses for
the development of literacy processes. This means to enrich these pedagogical
and social processes starting from the experiential heritage of the learner,
the possibilities on oral communication that keep and also the possibility to
encourage community to participate in it.
We will analyzed the specific case of adult literacy in Nicaragua that is
being develop by the Asociación de Educación Popular Carlos Fonseca Amador (AEPCFA), as an example of a network sharing human and educational
relationships
Parallel 3-D marine controlled-source electromagnetic modelling using high-order tetrahedral Nédélec elements
We present a parallel and high-order Nédélec finite element solution for the marine controlled-source electromagnetic (CSEM) forward problem in 3-D media with isotropic conductivity. Our parallel Python code is implemented on unstructured tetrahedral meshes, which support multiple-scale structures and bathymetry for general marine 3-D CSEM modelling applications. Based on a primary/secondary field approach, we solve the diffusive form of Maxwell’s equations in the low-frequency domain. We investigate the accuracy and performance advantages of our new high-order algorithm against a low-order implementation proposed in our previous work. The numerical precision of our high-order method has been successfully verified by comparisons against previously published results that are relevant in terms of scale and geological properties. A convergence study confirms that high-order polynomials offer a better trade-off between accuracy and computation time. However, the optimum choice of the polynomial order depends on both the input model and the required accuracy as revealed by our tests. Also, we extend our adaptive-meshing strategy to high-order tetrahedral elements. Using adapted meshes to both physical parameters and high-order schemes, we are able to achieve a significant reduction in computational cost without sacrificing accuracy in the modelling. Furthermore, we demonstrate the excellent performance and quasi-linear scaling of our implementation in a state-of-the-art high-performance computing architecture.This project has received funding from the European Union's Horizon 2020 programme under the Marie Sklodowska-Curie grant agreement No. 777778. Furthermore, the research leading to these results has received funding from the European Union's Horizon 2020 programme under the ChEESE Project (https://cheese-coe.eu/ ), grant agreement No. 823844. In addition, the authors would also like to thank the support of the Ministerio de Educación y Ciencia (Spain) under Projects TEC2016-80386-P and TIN2016-80957-P.
The authors would like to thank the Editors-in-Chief and to both reviewers, Dr. Martin Cuma and Dr. Raphael Rochlitz, for their valuable comments and suggestions which helped
to improve the quality of the manuscript.
This work benefited from the valuable suggestions, comments, and proofreading of Dr. Otilio Rojas (BSC). Last but not least, Octavio Castillo-Reyes thanks Natalia Gutierrez (BSC) for her support in CSEM modeling with BSIT.Peer ReviewedPostprint (author's final draft
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