Amalgamando culturas: análisis y propuesta para la fusión de la cultura organizacional de la empresa Fumighar S.A.S. con la cultura de la multinacional Rentokil Initial

La presente investigación es realizada en el marco de la Maestría en Administración de Negocios, con el fin de poner en práctica algunos conceptos teóricos adquiridos en este programa de posgrado, pero también con el ánimo particular de contribuir en la búsqueda de transformar el contexto empresarial, en el que como profesional se quiere impactar -- El objetivo principal del documento es el de presentar la caracterización de la cultura organizacional, y sus efectos, a partir de la fusión realizada entre Rentokil Initial y Fumighar S.A

Analysis of a chemo-repulsion model with nonlinear production: The continuous problem and unconditionally energy stable fully discrete schemes

We consider the following repulsive-productive chemotaxis model: Let $p\in (1,2)$, find $u \geq 0$, the cell density, and $v \geq 0$, the chemical concentration, satisfying \begin{equation}\label{C5:Am} \left\{ \begin{array} [c]{lll} \partial_t u - \Delta u - \nabla\cdot (u\nabla v)=0 \ \ \mbox{in}\ \Omega,\ t>0,\\ \partial_t v - \Delta v + v = u^p \ \ \mbox{in}\ \Omega,\ t>0, \end{array} \right. \end{equation} in a bounded domain $\Omega\subseteq \mathbb{R}^d$, $d=2,3$. By using a regularization technique, we prove the existence of solutions of this problem. Moreover, we propose three fully discrete Finite Element (FE) nonlinear approximations, where the first one is defined in the variables $(u,v)$, and the second and third ones by introducing ${\boldsymbol\sigma}=\nabla v$ as an auxiliary variable. We prove some unconditional properties such as mass-conservation, energy-stability and solvability of the schemes. Finally, we compare the behavior of the schemes throughout several numerical simulations and give some conclusions.Comment: arXiv admin note: substantial text overlap with arXiv:1807.0111

On the role of Prognostics and Health Management in advanced maintenance systems

The advanced use of the Information and Communication Technologies is evolving the way that systems are managed and maintained. A great number of techniques and methods have emerged in the light of these advances allowing to have an accurate and knowledge about the systems’ condition evolution and remaining useful life. The advances are recognized as outcomes of an innovative discipline, nowadays discussed under the term of Prognostics and Health Management (PHM). In order to analyze how maintenance will change by using PHM, a conceptual model is proposed built upon three views. The model highlights: (i) how PHM may impact the definition of maintenance policies; (ii) how PHM fits within the Condition Based Maintenance (CBM) and (iii) how PHM can be integrated into Reliability Centered Maintenance (RCM) programs. The conceptual model is the research finding of this review note and helps to discuss the role of PHM in advanced maintenance systems.EU Framework Programme Horizon 2020, 645733 - Sustain-Owner - H2020-MSCA-RISE-201

A framework for effective management of condition based maintenance programs in the context of industrial development of E-Maintenance strategies

CBM (Condition Based Maintenance) solutions are increasingly present in industrial systems due to two main circumstances: rapid evolution, without precedents, in the capture and analysis of data and significant cost reduction of supporting technologies. CBM programs in industrial systems can become extremely complex, especially when considering the effective introduction of new capabilities provided by PHM (Prognostics and Health Management) and E-maintenance disciplines. In this scenario, any CBM solution involves the management of numerous technical aspects, that the maintenance manager needs to understand, in order to be implemented properly and effectively, according to the company’s strategy. This paper provides a comprehensive representation of the key components of a generic CBM solution, this is presented using a framework or supporting structure for an effective management of the CBM programs. The concept “symptom of failure”, its corresponding analysis techniques (introduced by ISO 13379-1 and linked with RCM/FMEA analysis), and other international standard for CBM open-software application development (for instance, ISO 13374 and OSA-CBM), are used in the paper for the development of the framework. An original template has been developed, adopting the formal structure of RCM analysis templates, to integrate the information of the PHM techniques used to capture the failure mode behaviour and to manage maintenance. Finally, a case study describes the framework using the referred template.Gobierno de Andalucía P11-TEP-7303 M

Un nuevo conjunto de grabados al aire libre de cronología protohistórica e histórica en el entorno del "Castro Colorado"

Se presenta un nuevo conjunto de grabados rupestres al aire libre localizado en un castro prerromano junto a la antigua Asturica Augusta. Los grabados están realizados por picado, aunque hay algunos realizados por incisión. En los ocho paneles grabados hay antropomorfos, motivos geométricos y abstractos, junto a un número considerable de cruciformes y restos epigráficos. Existen tres fases de ejecución: Un primer momento representado por los antropomorfos situado en la Edad del Hierro, el segundo identificado por los cruciformes de época medieval y moderna y el tercero con la epigrafía de época contemporánea y subactual. Los paralelos de este yacimiento pueden asimilarse a los principales conjuntos de grabados peninsulares, con evidentes relaciones con los petroglifos gallegos, los grabados de la Meseta Norte y otros localizados en el valle del Ebro.Presents a new site of engravings outdoor located in a pre-Roman alongside the ancient Asturica Augusta. The engravings are made by grinding, although some performed by incision. In eight engraved panels there are anthropomorphic, geometric and abstract motifs along with a considerable number of cruciform and epigraphic remains. There are three phases of implementation: initially represented by the anthropomorphs located in the Iron Age, the second identified by the cruciforms of medieval and modern times, and the third with the epigraphy of contempory and subactual. The parallels of this site can assimilate to the main sets of peninsular engravings, with obvious relations with Galician petroglyphs, the engravings of the Plateau North and others located in the Ebro Valley

Review and Comparison of Intelligent Optimization Modelling Techniques for Energy Forecasting and Condition-Based Maintenance in PV Plants

Within the field of soft computing, intelligent optimization modelling techniques include various major techniques in artificial intelligence. These techniques pretend to generate new business knowledge transforming sets of "raw data" into business value. One of the principal applications of these techniques is related to the design of predictive analytics for the improvement of advanced CBM (condition-based maintenance) strategies and energy production forecasting. These advanced techniques can be used to transform control system data, operational data and maintenance event data to failure diagnostic and prognostic knowledge and, ultimately, to derive expected energy generation. One of the systems where these techniques can be applied with massive potential impact are the legacy monitoring systems existing in solar PV energy generation plants. These systems produce a great amount of data over time, while at the same time they demand an important e ort in order to increase their performance through the use of more accurate predictive analytics to reduce production losses having a direct impact on ROI. How to choose the most suitable techniques to apply is one of the problems to address. This paper presents a review and a comparative analysis of six intelligent optimization modelling techniques, which have been applied on a PV plant case study, using the energy production forecast as the decision variable. The methodology proposed not only pretends to elicit the most accurate solution but also validates the results, in comparison with the di erent outputs for the di erent techniques

Effects of gelatin origin, bovine-hide and tuna-skin, on the properties of compound gelatin-chitosan films

With the purpose to improve the physico-chemical performance of plain gelatin and chitosan films, compound gelatin-chitosan films were prepared. The effect of the gelatin origin (commercial bovine-hide gelatin and laboratory-made tuna-skin gelatin) on the physico-chemical properties of films was studied. The dynamic viscoelastic properties (elastic modulus G', viscous modulus, G″ and phase angle) of the film-forming solutions upon cooling and subsequent heating revealed that the interactions between gelatin and chitosan were stronger in the blends made with tuna-skin gelatin than in the blends made with bovine-hide gelatin. As a result, the fish gelatin-chitosan films were more water resistant (∼18% water solubility for tuna vs 30% for bovine) and more deformable (∼68% breaking deformation for tuna vs 11% for bovine) than the bovine gelatin-chitosan films. The breaking strength of gelatin-chitosan films, whatever the gelatin origin, was higher than that of plain gelatin films. Bovine gelatin-chitosan films showed a significant lower water vapour permeability (WVP) than the corresponding plain films, whereas tuna gelatin-chitosan ones were only significantly less permeable than plain chitosan film. Complex gelatin-chitosan films behaved at room temperature as rubbery semicrystalline materials. In spite of gelatin-chitosan interactions, all the chitosan-containing films exhibited antimicrobial activity against Staphylococcus aureus, a relevant food poisoning. Mixing gelatin and chitosan may be a means to improve the physico-chemical performance of gelatin and chitosan plain films, especially when using fish gelatin, without altering the antimicrobial properties. © 2011 Elsevier Ltd.Peer Reviewe

Fotoférisis extracorpórea en pacientes pediátricos

Tesis doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Medicina, Departamento de Medicina. Fecha de lectura: 13-05-201

eAdministració amb signatura electrònica

Els tràmits burocràtic i la bona gestió de les sol·licituds resultants són eines indispensables per l'administració eficient de qualsevol organització. Tot i això, també resulta un procés incòmode, tant pels sol·licitants com pel personal administratiu. Així doncs, l'objectiu és dissenyar un sistema automatitzat que maximitzi l'eficiència i agilitat del procés mentre minimitza els obstacles per l'usuari. Sistemes similars ja existeixen, però es consideraran, a més, dos funcionalitats importants que no són habituals. En primer lloc un problema comú en aquests sistemes sol ser la limitada capacitat de personalització dels formularis; o bé es requereixen coneixements de programació web o bé les opcions disponibles són poc versàtils. El primer objectiu del sistema serà, doncs, oferir una interfície àgil, així com potent, per l'edició de formularis, amb la possibilitat de definir diferents camps segons el tipus d'informació que es vol demanar i les restriccions que es considerin necessàries afegir. A més, anteriorment, els tràmits amb necessitat de ser legalment reconeguts s'havien de signar manuscritament, amb la molèstia que això suposava per un sistema telemàtic. Per tal d'evitar aquest problema, així com per satisfer directives legals, tant espanyoles com europees, aprovades durant aquesta última dècada, farem ús de la signatura electrònica. També, com a requeriment d'aquestes lleis, utilitzarem un dispositiu segur de creació de signatura, com el carnet UPC o el DNI electrònic. Finalment, i seguint la filosofia anterior, es procurarà que el procés de signatura sigui el més fàcil i còmode possible per tothom. Amb aquestes dues caràcterístiques principals, junt amb altres funcionalitats per ajudar en la gestió de formularis, esperarem proporcionar una eina útil a l'administració del departament de Matemàtica Aplicada II per tal de fer de la burocràcia departamental una experiència menys desagradable