Effect of pH and nanoclay content on the morphology and physicochemicalproperties of soy protein/montmorillonite nanocomposite obtained byextrusion

The present work attempts to clarify the influence of montmorillonite nanoclay content and pH on the me-chanical properties of extruded soy protein nanocomposites. The mechanical behaviour is dominated by theformation of positive synergies between protein and nanoclay above a nanoclay concentration threshold.Moreover, the presence of nanoclay can improve water uptake. The pH also exerts a strong influence on me-chanical and water absorption properties, although montmorillonite tend to reduce this effect.Eventually, this study put forward the feasibility of using a combination of soy protein and montmorillonite toobtain potentially attractive biodegradable nanocomposite materials, processed by means of a simple and easilyscalable twin-screw extruder.Junta de Andalucía (project TEP-6134)Ministerio de Economía y Competitividad (CTQ2015-71164-P

Magnetic field shielding of underground cable duct banks

In this paper an in-depth parametric analysis of shielding effectiveness obtained when using ferromagnetic or conductive screens to mitigate the field generated by duct banks is presented. Due to the need of a case-by-case approach, all the simulations, performed by a finite element software (GetDp), are applied to a case study composed by 9 (3 × 3) ducts, with six of them including high voltage single-core cables and the three left empty for eventual future expansion. Two shielding geometries are tested: horizontal and U-reverse, changing in each one the main parameters: width, thickness, clearance to conductors, etc. Moreover, the conductors are grouped in two balanced in-phase three-phase circuits arranged in three configurations: vertical, horizontal and triangular. The mutual phase ordering of both circuits is the one that minimizes the field, so no further field reduction can be obtained by simple methods. The power losses and cost of different shielding solutions are also presented, including the effect of adding a third circuit if required

¿Para qué utilizan Internet los preadolescentes? Estudio sobre el uso de la red por estudiantes de Educación Primaria de Andalucía

El uso temprano de Internet es un hecho consumado y demostrado entre la población infantil. Sus habilidades como nativos digitales, la atracción que ejercen las pantallas y la comodidad de formatos más manejables como las tabletas y teléfonos móviles propician (ayudan) un acercamiento cada vez mayor. A través de la esta investigación se ofrecen los resultados derivados de un análisis cuantitativo sobre el consumo de Internet en la enseñanza primaria efectuado en las ocho provincias andaluzas a alumnos con edades comprendidas entre los 9 y los 12 años. Este estudio se enmarca dentro de un Proyecto de Excelencia de la Junta de Andalucía, dirigido por el catedrático José Ignacio Aguaded-Gómez, que lleva por título ‘La competencia audiovisual de la ciudadanía andaluza: estrategias de alfabetización mediática en la sociedad del ocio digital’ (P10-SEJ-5823), con fecha de inicio en el año 2010. Los resultados ofrecen una clara visión sobre la funcionalidad de la red en este segmento población y permite dar orientaciones sobre la necesidad de una educación en pantallas. Sectores como la escuela y la propia familia deberían asumir.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Experimental validation of ultra-shortened 3D finite element electromagnetic modeling of three-core armored cables at power frequency

Due to recent advances, the numerical analysis of submarine three-core armored cables can nowadays be developed through the finite element method (FEM) in a small slice of the cable. This strongly reduces the computational burden and simulation time. However, the performance of this ultra-shortened 3D-FEM model is still to be fully assessed with experimental measurements. This paper focuses on this validation for an extensive variety of situations through the experimental measurements available in the specialized literature for up to 10 actual cables. In particular, it deals not only with relevant calculations at power frequency, like the series resistance and inductive reactance or the induced sheath current, but also with other aspects never analyzed before through 3D-FEM simulations, such as the zero sequence impedance, the magnetic field distribution around the power cable, as well as side effects due to the nonlinear properties of the armor wires. All this considering different armoring and sheath bonding configurations. Results show a very good agreement between measured and computed values, presenting the ultra-shortened 3D-FEM model as a suitable tool for the analysis and design of three-core armored cables, and opening the possibility to reduce the need of extensive experimental tests in the design stage of new cables.FEDER / Ministerio de Ciencia e Innovación - Agencia Estatal de Investigación (Spain) project ENE2017-89669-RUniversidad de Sevilla (Spain) VI PPIT-US grant 2018/0000074

Hybrid 2D/3D fully coupled electrothermal model for three-core submarine armored cables

The computation of the power losses in submarine three-core lead sheathed armored cables is overestimated by the IEC 60287 standard, and hence its size and cost. 3D finite element simulations in COMSOL Multiphysics have proved to provide accurate results in losses computation thanks to recent advances that help in reducing the model length by applying rotated periodicity boundary conditions [1,2]. However, for obtaining the ampacity of a particular cable a fully coupled 3D electrothermal model would require a highly detailed 3D geometry, something that can be difficult due to the special operations required to create and mesh the geometry for applying such boundary conditions [3]

Socially Responsible Human Resource Management and Employee Perception: The Influence of Manager and Line Managers

The aim of this article is to contribute to understanding the importance of considering the effect of employees’ perceptions of Socially Responsible Human Resource Management (SR-HRM) on employee commitment. Results, applied to different levels of the organization (HR managers, line managers and employees) show, on one hand, that there is a relationship between a SR-HRM and employee commitment, and on the other hand, that employees’ perceptions have an influence on the extent to which these relationships are developed. HR managers and line managers perceived SR-HRM in a similar way and line managers and non-managerial employees generally did too. The frequency with which line managers disagree with employees’ perceptions about socially responsible practices was low. Suggestions for HRM practice and future research are provided

Research proposal on the relationship between Corporate Social Responsibility and Strategic Human Resource Management

Jesús Barrena-Martínez*, Macarena López-Fernández and Pedro M. Romero-Fernández Department of Business Management, University of Cadiz, Glorieta Carlos Cano S/N, Cádiz 11002, Spain E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] *Corresponding authorThe purpose of this study is to develop a conceptual framework in order to analyse the relationship between corporate social responsibility and strategic human resource (HR) management. Thus far, both disciplines have advanced in isolation. Therefore, this paper aims to examine if a combination of these research lines can provide competitive advantages for enterprises. Specifically, we will analyse how a socially responsible orientation in the HRs practices can contribute to the achievement of these advantages through performance variables, such as work environment and intellectual capital.INDERSCIENCE PUBLISHER

Hacia la búsqueda de políticas de gestión de recursos humanos con una orientación socialmente responsable: Un análisis comparativo entre las empresas del Ibex-35 y las 50 compañías más admiradas de fortune

During the last decades, Corporate Social Responsibility (CSR) is being considered between academics and professionals as a strategic tool able to increase organizational competitiveness and financial performance. Those companies that are meeting the social, ethical and environmental concerns of their stakeholders (shareholders, employees, customers, Government, citizens, etc.) are obtaining great rewards because CSR actions are consistent with institutional values required by society and consequently can improve variables such as the legitimacy, reputation and market value. Concretely, in the organizational internal scope, employees represent one of the most relevant internal stakeholder for acquiring competitive advantages derived from CSR actions through enhancements in their commitment, sense of belonging, working environment and well-being. Taking this framework into account, this study raises a twofold aim. Firstly, to explore how the introduction of a socially responsible orientation in Human Resource Management (HRM) can cause a strength factor and a source of differentiation for firms. Secondly, to build a configuration of socially responsible human resource policies, following the social standards such as the Global Reporting Initiative (GRI) and ISO 26000. To support these objectives, we based our research on institutional perspective and stakeholder's theory. The method used has been a comparative analysis of socially responsible human resource policies in social disclosures and CSR reports from IBEX-35 firms and Fortune’s Top 50 Most Admired Companies.Durante las últimas décadas, la Responsabilidad Social Corporativa (RSC) está siendo considerada entre los académicos y profesionales, como una herramienta estratégica capaz de aumentar la competitividad y desempeño financiero de las organizaciones. Las empresas que están cumpliendo con las preocupaciones sociales, éticas y medioambientales de sus grupos de interés (accionistas,empleados, clientes, gobierno, ciudadanos, etc.) están obteniendo grandes beneficios, porque las acciones de RSC son consistentes con los valores institucionales que demanda la sociedad, y por lo tanto pueden mejorar variables como su legitimidad, reputación y valor de mercado. En concreto, en el ámbito interno de la organización, los empleados representan uno de los grupos de interés internos más relevantes para la adquisición de ventajas competitivas derivadas de las acciones de RSE, a través de mejoras en su compromiso, sentido de pertenencia, ambiente de trabajo y bienestar. Teniendo en cuenta este marco, este estudio plantea un doble objetivo. En primer lugar, explorar cómo la introducción de una orientación socialmente responsable en Gestión de Recursos Humanos (HRM) puede causar un factor de fuerza y una fuente de diferenciación para las empresas. En segundo lugar, construir una configuración de políticas de recursos humanos socialmente responsables con arreglo a normas sociales, como la Global Reporting Initiative (GRI) y la ISO 26000. Para apoyar estos objetivos, hemos basado nuestra investigación en la perspectiva institucional y la teoría de los stakeholders. El método utilizado ha sido la realización de un análisis comparativo de las políticas de recursos humanos socialmente responsables en los índices de información social e informes de RSC de las empresas del IBEX-35 y las 50 compañías Top Fortune más admiradas.Tourism and Management Studies International Conference Algarv

Synthesis of IAN-type N,N-Ligands via Dynamic Kinetic Asymmetric Buchwald-Hartwig Amination

The Pd-catalyzed coupling of racemic heterobiaryl bromides, triflates, or nonaflates with aryl/alkyl primary amines using QUINAP as the ligand provides the corresponding axially chiral heterobiaryl amines with excellent yields and enantioselectivities. Reactivity and structural studies of neutral and cationic oxidative addition intermediates support a dynamic kinetic asymmetric amination mechanism based on the labilization of the stereogenic axis in the latter and suggest that coordination of the amine to the Pd center is the stereodetermining step.Ministerio de Ciencia e Innovación CTQ2013-48164-C2-1-P, CTQ2013-48164-C2-2-P, RYC-2013-12585 for A.R.European FEDER FundsJunta de Andalucía 2012/FQM 1078

On Simplified 3D Finite Element Simulations of Three-Core Armored Power Cables

This paper analyzes different ways to electromagnetically simulate three-core armored cables in 3D by means of the finite element method. Full periodic models, as lengthy as 36 m, are developed to evaluate the accuracy when simulating only a small portion of the cable, as commonly employed in the literature. The adequate length and boundary conditions for having the same accuracy of full periodic models are also studied. To achieve this aim, five medium voltage and high voltage armored cables are analyzed, obtaining the minimum length of the cable that may be simulated for having accurate results in shorter time and with less computational burden. This also results in the proposal of a new method comprising the advantages of short geometries and the applicability of periodic boundary conditions. Its accuracy is compared with experimental measurements and the International Electrotechnical Commission (IEC) standard for 145 kV and 245 kV cables. The results show a very good agreement between simulations and measurements (errors below 4%), obtaining a reduction in the computation time of about 90%. This new method brings a more effective tool for saving time and computational resources in cable design and the development of new analytical expressions for improving the IEC standard.Agencia Estatal de Investigación (AEI) ENE2017-89669-RFondo Europeo de Desarrollo Regional ( FEDER, UE) ENE2017-89669-RUniversidad de Sevilla (VI PPIT-US) 2018/0000074