How does collaborative economy contribute to common good?

Collaborative economy emerged as a response to the need of people to exchange, produce and share in a more humane and cooperative manner. However, the growth of collaborative economy organizations and the terminological confusion have led to debates about their possible effects, both positive and negative. In this study, we have created a guideline that can be used to evaluate the contribution of organizations considered within collaborative economy to common good. We used the conceptualization of common good, which, from its Aristotelian-Thomist philosophy, was developed by the personalist-humanist perspective of management. Our analysis leads us to conclude that the evaluation of the contribution of any organization to the common good must take into account how the participants develop their virtues, the creation of the community and its impact on the common good of society. At the end of the article, we present the aspects that society must take into account regarding collaborative economy. Firstly, society, in general, must approach collaborative economy as a tool that must complement others in the search for solutions to economic and social problems and, secondly, the governance of the platform-network is essential to foster organizational models that favour the common good

A sustainable evaluation of drilling parameters for PEEK-GF30

Producción CientíficaThis paper presents a study of hole quality and energy consumption in the process of drilling a thermoplastic polymeric material, polyether-ether-ketone, reinforced with 30% glass fibers (PEEK-GF30). PEEK-GF30’s capacity to be machined has focused on turning operations. Studies of drilling involving thermoplastic polymeric materials have considered materials with other types of matrices, or reinforcement. In this study, quantities such as maximum and mean surface roughness, delamination, maximum thrust force, maximum momentum, and energy required during the process were determined for three types of drill bits, and the most influential factors for each variable were identified using an ANOVA multifactor analysis. The highest quality and lowest energy consumption were achieved for a drill bit rotation speed of 7000 rpm and a feed rate of 400 mm/min with a tungsten carbide (WC) drill bit coated with titanium aluminum nitride (TiAlN). Although a WC drill bit with a diamond point reduces delamination, the roughness increases, thus, the choice of the drill bit type depends on the roughness allowed. A WC drill bit coated with TiAlN produces a good surface finish that can eliminate subsequent operations and requires less energy; thus, this type of drill bit is the most attractive of the types evaluated.Ministerio de Economía de España y Competitividad, (Proyecto DPI2011-27135)Escuela Técnica Superior de Ingenieros Industriales de la UNE (Project ICF03

Diversity of Sinorhizobium (Ensifer) meliloti Bacteriophages in the Rhizosphere of Medicago marina: Myoviruses, Filamentous and N4-Like Podovirus

Using different Sinorhizobium meliloti strains as hosts, we isolated eight new virulent phages from the rhizosphere of the coastal legume Medicago marina. Half of the isolated phages showed a very narrow host range while the other half exhibited a wider host range within the strains tested. Electron microscopy studies showed that phages M_ort18, M_sf1.2, and M_sf3.33 belonged to the Myoviridae family with feature long, contractile tails and icosaedral head. Phages I_sf3.21 and I_sf3.10T appeared to have filamentous shape and produced turbid plaques, which is a characteristic of phages from the Inoviridae family. Phage P_ort11 is a member of the Podoviridae, with an icosahedral head and a short tail and was selected for further characterization and genome sequencing. P_ort11 contained linear, double-stranded DNA with a length of 75239 bp and 103 putative open reading frames. BLASTP analysis revealed strong similarities to Escherichia phage N4 and other N4-like phages. This is the first report of filamentous and N4-like phages that infect S. melilot

Hopes and facts in evaluating the performance of HPC-I/O on a cloud environment

Currently, there is an increasing interest about the cloud platform by the High Performance Computing (HPC) community, and the Parallel I/O for High Performance Systems is not an exception. In cloud platforms, the user takes into account not only the execution time but also the cost, because the cost can be one of the most important issue. In this paper, we propose a methodology to quickly evaluate the performance and cost of Virtual Clusters for parallel scientific application that uses parallel I/O. From the parallel application I/O model automatically extracted with our tool PAS2P-IO, we obtain the I/O requirements and then the user can select the Virtual Cluster that meets the application requirements. The application I/O model does not depend on the underlying I/O system. One of the main benefits of applying our methodology is that it is not necessary to execute the application to select the Virtual Cluster on cloud. Finally, costs and performance-cost ratio for the Virtual Clusters are provided to facilitate the decision making on the selection of resources on a cloud platform.Facultad de Informátic

Capital público, actividad económica privada y efectos desbordamiento: Un análisis por Comunidades Autónomas de los sectores Industria y Construcción en España

En este trabajo se presenta una valoración del impacto de la infraestructura pública sobre la actividad privada española en los sectores de Industria y Construcción por CC.AA. para el período 1980-1993. El enfoque utilizado consiste en la estimación de una función de costes transcendental logarítmica, obteniendo resultados, entre otros, de la productividad del capital público y privado a corto y a largo plazo. Además, a diferencia de otros estudios, se considera la posible existencia de efectos desbordamiento del capital público entre regiones. Classification-JEL : D21, H54, O47. Infraestructura pública, efectos desbordamiento, función de costes, productividad.

Hopes and facts in evaluating the performance of HPC-I/O on a cloud environment

Currently, there is an increasing interest about the cloud platform by the High Performance Computing (HPC) community, and the Parallel I/O for High Performance Systems is not an exception. In cloud platforms, the user takes into account not only the execution time but also the cost, because the cost can be one of the most important issue. In this paper, we propose a methodology to quickly evaluate the performance and cost of Virtual Clusters for parallel scientific application that uses parallel I/O. From the parallel application I/O model automatically extracted with our tool PAS2P-IO, we obtain the I/O requirements and then the user can select the Virtual Cluster that meets the application requirements. The application I/O model does not depend on the underlying I/O system. One of the main benefits of applying our methodology is that it is not necessary to execute the application to select the Virtual Cluster on cloud. Finally, costs and performance-cost ratio for the Virtual Clusters are provided to facilitate the decision making on the selection of resources on a cloud platform.Facultad de Informátic

Efectividad de un programa de intervención contra el ciberbullying

Antecedentes . La inmersión de las TICs e internet en la vida de los jóvenes y los riesgos que de su uso se derivan ponen de manifiesto la necesidad de alfabetizar digitalmente a los adolescentes. El programa ConRed, dirigido a docentes, alumnos y familias, ha conseguido que entre estudiantes se reduzcan problemas como el ciberbullying, la dependencia virtual y el escaso control sobre la información personal publicada en Internet. Este artículo examina el impacto de una adaptación del Proyecto ConRed tras eliminar su ca rácter ecológico y reducir el número de sesiones con el alumnado. Método . Se ha utilizado una metodología cuasi experimental y una muestra de 355 estudiantes entre grupo experimental (N=163) y control (N=192) (51,7%♀; Edad M= 14,6; DT= 1,7), quienes cumpli mentaron en pretest y postest cuestionarios sobre ciberbullying, percepción del control de la información y dependencia a internet. Resultados . Los análisis de ANOVA de medidas repetidas solo reflejaron resultados favorables para la prevención e intervención de bulling. Conclusiones. Este trabajo constata la necesidad de intervenciones anti-ciberbullying donde participe alumnado, familias y profesorado y refuerza la evidencia científica de que los programas destinados en reducir la violencia en la red influyen irremediablemente en los agresores de violencia tradicional.Background . ICT Immersion and the internet in the youngs lives and the risks arising from its use highlight the need for digital literacy to adolescents. The ConRed program, aimed at teachers, students and families, has made problems like cyberbullying, the virtual dependency and poor control over personal information on the Internet among students to be reduced. This article examines the impact of an ConRed proyect adaptation after removing their ecological character and reduce the number of sessions with the students. Method . We used a quasi-experimental methodology and a sample of 355 students in the experimental group (N = 163) and control (N = 192) (51.7% ♀, age M = 14.6, SD = 1.7) who completed pretest and posttest questionnaires about cyberbullying, control of information perception and internet dependency. Results. Analysis of repeated ANOVA measures only reflected favorable for the prevention and intervention of traditional bullying results. Conclusions . This work shows the necessity of anti-cyberbullying interventions where students, families and teachers participates and reinforces the scientific evidence that programs aimed at reducing violence in the network inevitably affect traditional violence offenders

Morfología macroscópica de alteración de la piedra de la Catedral de Baeza, Jaén (España)

Los principales factores de alteración que afectan a la Catedral de Baeza son de origen natural, fundamentalmente de tipo térmico e hidráulico. Para la construcción se han empleado en su mayor parte dos tipos de calcarenita, una franca de porosidad media y otra más dura y compacta procedentes de canteras de la zona. Los mecanismos de alteración más frecuentes son los ligados a la cristalizacióndisolución e hidratación-deshidratación de sales, así como a los de heladicidad en interior de los poros. Se hace una descripción por fachadas de los indicadores de alteración, siendo los más frecuentes las fisuras, arenizaciones y disyunciones.The main factors of deterioration that affect the Cathedral of Baeza are of a natural origin, basically thermic and hydraulic. Two types of calcarenite were employed in the construction of the major part of this building: one 'franca" of medium porosity and another "viva " harder and more compact, both extracted from the quarries in the area. The most frequent mechanisms of deterioration are those bound to crystallization-dissolution and hydration-dehydration of salts, as well as freezing inside the pores. Façade-by-façade description of the deterioration indicators is provided; the most common ones tend to be fissures, grain disgregations and disjunctions

Factores de riesgo asociados a sepsis neonatal en recién nacidos sala de neonatología, Hospital Humberto Alvarado Vásquez, Masya. I-II semestre, 2015

Los hallazgos del presente estudio demuestran que la sepsis es una causa de mortalidad neonatal, y que la presencia de esta patología ya sea temprana o tardía, está determinada por varios factores de riesgo tanto materno como neonatal. Esta investigación fue de tipo cuantitativa, retroprospectiva, y de corte transversal, ya que en ella se exploró la complejidad del problema planteado por medio de diferentes instrumentos de recolección de datos en un periodo de tiempo determinado. Se realizó revisión documental para obtener mejor información de los expedientes clínicos de las usuarias y del neonato, se observó el manejo del servicio, evaluada con una guía observacional. La población a estudio fueron 20 recién nacidos diagnosticados con sepsis neonatal. Los principales resultados de este estudio referente a los datos clínicos del recién nacido, fueron factores de riesgo relacionados con el sexo del neonato (masculino), edad de vida (> 72 horas), y tipo de nacimiento (vaginal). Se encontraron factores de riesgo obstétricos como: consumo de cafeína, inasistencia a controles prenatales, infección de vías urinarias, ruptura prematura de membranas, liquido meconial y tricomoniasis, En la atención que se le brinda al recién nacido los factores de riesgos de mayor relevancia, fueron el incumplimiento de las medidas de bioseguridad y las inadecuadas medidas de asepsia y antisepsia realizadas por el personal de salud. La principal recomendación es hacia el personal que labora en la sala de neonatología: hacer más concientización de las medidas de asepsia y antisepsia en la atención de los recién nacido