¿Cómo definen los profesionales de enfermería sus competencias de excelencia?

El objetivo fundamental del presente trabajo es el de describir, analizar y discutir los resultados de un procedimiento estandarizado para determinar las competencias que deben tener los profesionales de enfermería. Se pretende conocer, en opinión de los enfermeros/as que están desarrollando el puesto, cuales son los comportamientos más relevantes y prioritarios para llevar a cabo de una manera excelente su trabajo en el ámbito hospitalario. La implantación de estas herramientas cuenta con el apoyo de la alta dirección y establece mecanismos de participación e implicación de los profesionales para tener un marco adecuado de relaciones laborales que permitan optimizar las evaluaciones y decisiones respecto al personal.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Limitacions i reptes de la implicació ciutadana en la planificació de la ciutat. El cas de Va Cabanyal!

Amb aquest article es pretén generar un espai de reflexió sobre les limitacions i els reptes presents en la implicació de la ciutadania en els processos de planificació i transformació urbana a través de l’estudi de cas del barri del Cabanyal a València. Després de divuit anys amenaçat per la prolongació de l’avinguda Blasco Ibáñez, el nou govern local va promoure un procés participatiu durant l’últim trimestre del 2015 per a la redacció d’una Estratègia de Desenvolupament Urbà Sostenible i Integrat (EDUSI) per al barri, amb l’objectiu d’obtenir fons europeus per a regenerar la zona. Un conflicte urbà tan estès en el temps i amb tanta complexitat de capes i discursos com el del Cabanyal permet analitzar la participació social des d’un marc conflictualista que és difícil obviar. A través de la implicació en aquest procés d’investigació de l’acció participativa, s’ha aprofundit en la transformació del conflicte, en les potencialitats d’un enfocament holístic i dialèctic, així com en les limitacions imposades, entre altres, per un marc administratiu molt rígid

A semantic-based gas source localization with a mobile robot combining vision and chemical sensing.

CC BYThis paper addresses the localization of a gas emission source within a real-world human environment with a mobile robot. Our approach is based on an efficient and coherent system that fuses different sensor modalities (i.e., vision and chemical sensing) to exploit, for the first time, the semantic relationships among the detected gases and the objects visually recognized in the environment. This novel approach allows the robot to focus the search on a finite set of potential gas source candidates (dynamically updated as the robot operates), while accounting for the non-negligible uncertainties in the object recognition and gas classification tasks involved in the process. This approach is particularly interesting for structured indoor environments containing multiple obstacles and objects, enabling the inference of the relations between objects and between objects and gases. A probabilistic Bayesian framework is proposed to handle all these uncertainties and semantic relations, providing an ordered list of candidates to be the source. This candidate list is updated dynamically upon new sensor measurements to account for objects not previously considered in the search process. The exploitation of such probabilities together with information such as the locations of the objects, or the time needed to validate whether a given candidate is truly releasing gases, is delegated to a path planning algorithm based on Markov decision processes to minimize the search time. The system was tested in an office-like scenario, both with simulated and real experiments, to enable the comparison of different path planning strategies and to validate its efficiency under real-world conditions.Ministerio de Economía y Competitividad (DPI2017-84827-R). Unión europea (MoveCare (732158)). Junta de Andalucía (TEP2012-530)

Oxidoperoxidomolybdenum(VI) complexes with acylpyrazolonate ligands: synthesis, structure and catalytic properties

Oxidoperoxido–molybdenum(VI) complexes containing acylpyrazolonate ligands were obtained by reaction of [Mo(O)(O)2(H2O)n] with the corresponding acylpyrazolone compounds HQR. Complexes Ph4P[Mo(O)(O2)2(QR)] (R = neopentyl, 1; perfluoroethyl, 2; hexyl, 3; phenyl, 4; naphthyl, 5; methyl, 6; cyclohexyl, 7; ethylcyclopentyl, 8) were obtained if the reaction was carried out with one equivalent of HQR in the presence of Ph4PCl. Alternatively, neutral complexes [Mo(O)(O2)(QR)2] (R = neopentyl, 9; hexyl, 10; cyclohexyl, 11) were formed when two equivalents of HQR were used in the reaction. These complexes were isolated in good yields as yellow or yellow-orange crystalline solids and were spectroscopically (IR, 1H, 13C{1H} and 31P{1H} NMR), theoretically (DFT) and structurally characterised (X-ray for 1, 2, 9 and 10). Compounds 1 and 9 were selected to investigate their catalytic behaviour in epoxidation of selected alkenes and oxidation of selected sulphides, while 10 and 11 were tested as catalyst precursors in the deoxygenation of selected epoxide substrates to alkenes, using PPh3 as the oxygen-acceptor. Complexes Ph4P[Mo(O)(O2)2(QR)] were shown to be poor catalyst precursors in oxidation reactions, while the activity of [Mo(O)(O2)(QR)2] species is good in all the studied reactions and comparable to related oxidoperoxido–molybdenum(VI) complexes. Complex [Mo(O)2(QC6)2], 12, was obtained by treatment of 10 with one equivalent of PPh3, demonstrating that the first step in the epoxide deoxygenation mechanism was the oxygen atom transfer toward the phosphane.Junta de Andalucía (Proyecto de Excelencia, FQM-7079)Universidad de Sevilla (VI Plan Propio

Automatic Waypoint generation to improve robot navigation through narrow spaces

In domestic robotics, passing through narrow areas becomes critical for safe and effective robot navigation. Due to factors like sensor noise or miscalibration, even if the free space is sufficient for the robot to pass through, it may not see enough clearance to navigate, hence limiting its operational space. An approach to facing this is to insert waypoints strategically placed within the problematic areas in the map, which are considered by the robot planner when generating a trajectory and help to successfully traverse them. This is typically carried out by a human operator either by relying on their experience or by trial-and-error. In this paper, we present an automatic procedure to perform this task that: (i) detects problematic areas in the map and (ii) generates a set of auxiliary navigation waypoints from which more suitable trajectories can be generated by the robot planner. Our proposal, fully compatible with the robotic operating system (ROS), has been successfully applied to robots deployed in different houses within the H2020 MoveCare project. Moreover, we have performed extensive simulations with four state-of-the-art robots operating within real maps. The results reveal significant improvements in the number of successful navigations for the evaluated scenarios, demonstrating its efficacy in realistic situations.Ministerio de Economía y Competitividad (DPI2017-84827-R) con Fondos FEDER. Comisión Europea (ICT-26-2016b-GA-732158). Universidad de Málaga

Experimental validation of a quasi-two-dimensional radial turbine model

[EN] This article presents the experimental validation of a quasi-two-dimensional radial turbine model able to be used in turbocharged reciprocating internal combustion engine simulations. A passenger car variable-geometry turbine has been tested under steady and pulsating flow conditions, instrumented with multiple pressure probes, temperature sensors and mass flow sensors. Using the data obtained, a pressure decomposition has been performed. The pressure at the turbine inlet and outlet has been split into forward and backward travelling waves, employing the reflected and transmitted waves to verify the goodness of the model. The experimental results have been used to compare the quasi-two-dimensional radial turbine model as well as a classic one-dimensional model. The quasi-two-dimensional code presents a good degree of correlation with the experimental results, providing better results than the one-dimensional approach, especially when studying the high-frequency spectrum.Pablo Soler is partially supported through contract FPI-2017-S2-1428 of Programa de Apoyo para la Investigación y Desarrollo (PAID) of Universitat Politècnica de València. The authors of this paper wish to thank M.A. Ortiz and V. Ucedo for their invaluable work during the experimental setup and the campaign.Galindo, J.; Arnau Martínez, FJ.; García-Cuevas González, LM.; Soler-Blanco, P. (2018). Experimental validation of a quasi-two-dimensional radial turbine model. International Journal of Engine Research. https://doi.org/10.1177/1468087418788502SKesgin, U. (2005). Effect of turbocharging system on the performance of a natural gas engine. Energy Conversion and Management, 46(1), 11-32. doi:10.1016/j.enconman.2004.02.006Tang, H., Pennycott, A., Akehurst, S., & Brace, C. J. (2014). A review of the application of variable geometry turbines to the downsized gasoline engine. International Journal of Engine Research, 16(6), 810-825. doi:10.1177/1468087414552289Pesiridis, A. (2012). The application of active control for turbocharger turbines. International Journal of Engine Research, 13(4), 385-398. doi:10.1177/1468087411435205Romagnoli, A., & Martinez-Botas, R. (2011). Performance prediction of a nozzled and nozzleless mixed-flow turbine in steady conditions. International Journal of Mechanical Sciences, 53(8), 557-574. doi:10.1016/j.ijmecsci.2011.05.003Payri, F., Serrano, J. R., Fajardo, P., Reyes-Belmonte, M. A., & Gozalbo-Belles, R. (2012). A physically based methodology to extrapolate performance maps of radial turbines. Energy Conversion and Management, 55, 149-163. doi:10.1016/j.enconman.2011.11.003Costall, A. W., McDavid, R. M., Martinez-Botas, R. F., & Baines, N. C. (2010). Pulse Performance Modeling of a Twin Entry Turbocharger Turbine Under Full and Unequal Admission. Journal of Turbomachinery, 133(2). doi:10.1115/1.4000566De Bellis, V., & Marelli, S. (2015). One-dimensional simulations and experimental analysis of a wastegated turbine for automotive engines under unsteady flow conditions. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 229(13), 1801-1816. doi:10.1177/0954407015571672Serrano, J. R., Olmeda, P., Páez, A., & Vidal, F. (2010). An experimental procedure to determine heat transfer properties of turbochargers. Measurement Science and Technology, 21(3), 035109. doi:10.1088/0957-0233/21/3/035109Burke, R. D., Copeland, C. D., Duda, T., & Rayes-Belmote, M. A. (2016). Lumped Capacitance and Three-Dimensional Computational Fluid Dynamics Conjugate Heat Transfer Modeling of an Automotive Turbocharger. Journal of Engineering for Gas Turbines and Power, 138(9). doi:10.1115/1.4032663Olmeda, P., Dolz, V., Arnau, F. J., & Reyes-Belmonte, M. A. (2013). Determination of heat flows inside turbochargers by means of a one dimensional lumped model. Mathematical and Computer Modelling, 57(7-8), 1847-1852. doi:10.1016/j.mcm.2011.11.078Serrano, J., Olmeda, P., Arnau, F., Reyes-Belmonte, M., & Lefebvre, A. (2013). Importance of Heat Transfer Phenomena in Small Turbochargers for Passenger Car Applications. SAE International Journal of Engines, 6(2), 716-728. doi:10.4271/2013-01-0576Aghaali, H., Ångström, H.-E., & Serrano, J. R. (2014). Evaluation of different heat transfer conditions on an automotive turbocharger. International Journal of Engine Research, 16(2), 137-151. doi:10.1177/1468087414524755Serrano, J. R., Olmeda, P., Tiseira, A., García-Cuevas, L. M., & Lefebvre, A. (2013). Theoretical and experimental study of mechanical losses in automotive turbochargers. Energy, 55, 888-898. doi:10.1016/j.energy.2013.04.042Serrano, J. R., Olmeda, P., Tiseira, A., García-Cuevas, L. M., & Lefebvre, A. (2013). Importance of Mechanical Losses Modeling in the Performance Prediction of Radial Turbochargers under Pulsating Flow Conditions. SAE International Journal of Engines, 6(2), 729-738. doi:10.4271/2013-01-0577Galindo, J., Fajardo, P., Navarro, R., & García-Cuevas, L. M. (2013). Characterization of a radial turbocharger turbine in pulsating flow by means of CFD and its application to engine modeling. Applied Energy, 103, 116-127. doi:10.1016/j.apenergy.2012.09.013Hakeem, I., Su, C.-C., Costall, A., & Martinez-Botas, R. F. (2007). Effect of volute geometry on the steady and unsteady performance of mixed-flow turbines. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 221(4), 535-549. doi:10.1243/09576509jpe314Hu X. An advanced turbocharger model for the internal combustion engine. PhD Thesis, Purdue University, West Lafayette, IN, 2000.King A. A turbocharger unsteady performance model for the GT-power internal combustion engine simulation. PhD Thesis, Purdue University, West Lafayette, IN, 2000.Rajoo, S., & Martinez-Botas, R. (2008). Variable Geometry Mixed Flow Turbine for Turbochargers: An Experimental Study. International Journal of Fluid Machinery and Systems, 1(1), 155-168. doi:10.5293/ijfms.2008.1.1.155Serrano, J. R., Tiseira, A., García-Cuevas, L. M., Inhestern, L. B., & Tartoussi, H. (2017). Radial turbine performance measurement under extreme off-design conditions. Energy, 125, 72-84. doi:10.1016/j.energy.2017.02.118Torregrosa, A. J., Broatch, A., Navarro, R., & García-Tíscar, J. (2014). Acoustic characterization of automotive turbocompressors. International Journal of Engine Research, 16(1), 31-37. doi:10.1177/1468087414562866Leufvén, O., & Eriksson, L. (2014). Measurement, analysis and modeling of centrifugal compressor flow for low pressure ratios. International Journal of Engine Research, 17(2), 153-168. doi:10.1177/1468087414562456Galindo, J., Tiseira, A., Navarro, R., Tarí, D., & Meano, C. M. (2017). Effect of the inlet geometry on performance, surge margin and noise emission of an automotive turbocharger compressor. Applied Thermal Engineering, 110, 875-882. doi:10.1016/j.applthermaleng.2016.08.099Galindo, J., Tiseira, A., Fajardo, P., & García-Cuevas, L. M. (2014). Development and validation of a radial variable geometry turbine model for transient pulsating flow applications. Energy Conversion and Management, 85, 190-203. doi:10.1016/j.enconman.2014.05.072Ding, Z., Zhuge, W., Zhang, Y., Chen, H., Martinez-Botas, R., & Yang, M. (2017). A one-dimensional unsteady performance model for turbocharger turbines. Energy, 132, 341-355. doi:10.1016/j.energy.2017.04.154Toro, E. F., Spruce, M., & Speares, W. (1994). Restoration of the contact surface in the HLL-Riemann solver. 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A predictive model for the maintenance of industrial machinery in the context of industry 4.0

The Industry 4.0 paradigm is being increasingly adopted in the production, distribution and commercialization chains worldwide. The integration of the cutting-edge techniques behind it entails a deep and complex revolution –changing from scheduled-based processes to smart, reactive ones– that has to be thoroughly applied at different levels. Aiming to shed some light on the path towards such evolution, this work presents an Industry 4.0 based approach for facing a key aspect within factories: the health assessment of critical assets. This work is framed in the context of the innovative project SiMoDiM, which pursues the design and integration of a predictive maintenance system for the stainless steel industry. As a case of study, it focuses on the machinery involved in the production of high-quality steel sheets, i.e. the Hot Rolling Process, and concretely on predicting the degradation of the drums within the heating coilers of Steckel mills (parts with an expensive replacement that work under severe mechanical and thermal stresses). This paper describes a predictive model based on a Bayesian Filter, a tool from the Machine Learning field, to estimate and predict the gradual degradation of such machinery, permitting the operators to make informed decisions regarding maintenance operations. For achieving that, the proposed model iteratively fuses expert knowledge with real time information coming from the hot rolling processes carried out in the factory. The predictive model has been fitted and evaluated with real data from ∼118k processes, proving its virtues for promoting the Industry 4.0 era.Ministerio de Industria, Energía y Turismo (OTRI-8.06/5.56.4826, IC4-030000-2016-3), MInisterio de Economía, Industria y Competitividad (DPI2014-55826-R). Universidad de Málaga (I-PPIT-UMA

Comparison between microcomputed tomography and cone‐beam computed tomography radiologic bone to assess atrophic posterior maxilla density and microarchitecture

Purpose The aim of this study was to analyze the relationship between bone density obtained by cone‐beam computed tomography ( CBCT ) and morphometric parameters of bone analyzed by microcomputed tomography (μ‐ CT ). Material and methods An overall of 32 subjects ≤8 mm of bone height were included in the study. One site per patient was randomly selected to obtain bone core. Totally, 27 biopsies were available for μ‐ CT analysis. In addition, CBCT was taken after positioning a previously fabricated acrylic resin template with a 2‐mm‐diameter metal rod at the randomly selected implant site to study radiographic bone density ( RBD ). The relationship between μ‐ CT and CBCT quantitative variable and RBD was analyzed using Spearman correlation. Results Positive correlations between BV / TV ( r  = 0.769, P  < 0.001), BS / TV ( r  = 0.563, P  = 0.002), T b. T h ( r  = 0.491, P  = 0.009), T b. N ( r  = 0.518, P  = 0.005) and v BMD ( r  = 0.699, P  < 0.001) with RBD were identified. On the contrary, BS / BV ( r  = −0.509, P  = 0.006), T b. S p ( r  = −0.539, P  = 0.003) and T b. P f ( r  = −0.636, P  < 0.001) were negatively correlated with RBD . Moreover, SMI ( r  = −0.380, P  = 0.050) and DA (−0.245, P  = 0.217) were negatively correlated but not statistically significant. Conclusion This study demonstrated the correlation between radiographic bone density ( RBD ) and bone density assessed by μ‐ CT . Therefore, our data supported the use of CBCT as pre‐operative tool for implant treatment planning because it is shown to be reliable to assess atrophic posterior maxilla density and microarchitecture.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/106929/1/clr12133.pd

Microwave-Assisted Rearrangement of Costunolide Catalyzed by Palladium(II)

The structure of costunolide was modified before conducting the Cope rearrangement under thermal conditions. This modification was undertaken to block the highly reactive Michael acceptor α-methylene-γ-lactone, thus preventing side reactions at high temperatures. In this work, the reaction was performed under heating or microwave irradiation using costunolide, not its modified version. Rates of Cope reactions catalyzed by palladium(II) assisted by microwave were substantially enhanced. The rearrangements of costunolide to elemanolide, eudesmanolides, and germacranolide were catalyzed by palladium acetate, bis(benzonitrile)palladium dichloride, and a mixture of both organometallics. Rates of microwave promoted rearrangements of costunolide were six times faster than the reactions assisted by heating. The best success rate for elemanolide (7) was obtained using a mixture of Pd(OAc)2 and (NCPh)2PdCl2. In this case, compound 7 was obtained in a yield of 34%, while the other sesquiterpene lactones were formed only in trace amounts. The reaction products were isolated using semi-preparative high performance liquid chromatography and further purified through sequential analytical high performance liquid chromatography. Bioactivity profiles that used etiolated wheat coleoptiles were conducted for compounds 6, 7, and 9. The tested compounds presented very high phytotoxicity, with inhibition up to 97%