Anàlisi del comportament resistent de ponts d'obra de fàbrica amb llums importants

Els ponts arc d’obra de fàbrica, els quals han de suportar avui en dia sol.licitacions creixents de trànsit, són actualment un important motiu del interès de bastants estudis respecte al seu comportament i verificació de les seves resistències per mantenir-los en ús vigent. La resistència d’aquest tipus de ponts, es deguda sobretot a la ‘antifunicularitat’ de la rosca, on es fa del tot imprescindible mantindra-la com a línia de compressions constants, ja que els materials dels ponts de maçoneria en general, no suporten tensions de tracció, éssent la seva ruptura més comúna la deguda a la formació de ròtules conseqüència de l’excentricitat de la línia d’empentes en actuar la sobrecàrrega i que tornen l’estructura en un mecanisme

Diseño del backoffice de un panel de control de un ayuntamiento

[ES] El objetivo principal del proyecto es el desarrollo de una página web informativa donde quedará englobada toda la información que pudiera ser relevante para el usuario y que a través de una interfaz agradable, este pudiera disponer de todos los datos en tiempo real para así poder tomar decisiones más acertadas a través de la información que recibe de ésta.Bosch Tur, C. (2017). Diseño del backoffice de un panel de control de un ayuntamiento. http://hdl.handle.net/10251/97223TFG

Online procurement. Technology thinking and technology neutrality of computer systems

Los negocios jurídicos que se desarrollan a través de aplicaciones online constituyen, en nuestros días, un fenómeno de masas que requiere un estudio individualizado. Con frecuencia, se aborda la cuestión desde una perspectiva estrictamente jurídica, sin tomar en consideración el extraordinario impacto que, la tecnología subyacente, proyecta sobre el marco legislativo que regula la contratación online. El objetivo del presente trabajo es proponer respuestas jurídicas razonables sobre algunos de los grandes dogmas del pensamiento computacional. La inmensa mayoría de las aplicaciones destinadas a la contratación online, se basan en algoritmos tradicionales optimizados para fomentar la máxima facturación del prestador de servicio. Tomando tal afirmación como punto de referencia, procede revisar el concepto de neutralidad tecnológica y reconsiderar la postura que debe adoptar el legislador frente al avance de las TIC.Legal transactions carried out through online applications are currently a mass phenomenon that requires individualized study. The issue is often approached from a strictly legal perspective, without taking into consideration the extraordinary impact that the underlying technology has on the legislative framework that regulates online contracting. The aim of this paper is to propose reasonable legal answers to several of the major dogmas concerning computational thinking. The vast majority of applications for online contracting are based on traditional algorithms optimized to increase maximum revenue for service providers. Taking this statement as a point of reference, it is appropriate to review the concept of technological neutrality and reconsider the position to be adopted by lawmakers in the face of the advance of ICTs

Influencia de los medios de comunicación en la práctica de actividad física y en el consumo de una dieta saludable

El presente Trabajo Fin de Grado pretende fomentar en el alumnado de Educación Primaria capacidad crítica frente a los Medios de Comunicación, además de los conocimientos necesarios para adoptar un estilo de vida saludable. Para ello hemos realizado una Unidad Didáctica intra- e inter-disciplinar, cuya justificación queda recogida en la información analizada de diversas fuentes acerca de la influencia que los medios de comunicación ejercen, tanto en los alimentos consumidos, como en la cantidad y el tipo de actividad física practicada por los niños. Así como su justificación curricular, haciendo un breve recorrido por las dos leyes entre las cuales se está rigiendo en estos momentos el Sistema Educativo español: la LOE y la LOMCE.Universidad de Granada. Facultad de Ciencias de la Educación. Grado en Educación Primari

Hybrid computation of the aerodynamic noise radiated by the wake of a subsonic cylinder

The noise radiated by the flow around a cylinder in the subcritical regime at =1×104 and at a subsonic Mach number of =0.5 is here studied. The aerodynamic sound radiated by a cylinder has been studied with a wide range of Reynolds numbers, but there are no studies about how the Mach number affects the acoustic field in the subsonic regime. The flow field is resolved by means of large-eddy simulations of the compressible Navier–Stokes equations. For the study of the noise propagation, formulation 1C of the Ffowcs Williams–Hawkings analogy is used. The fluid flow results show good agreement when comparing the surface pressure coefficient, the recirculation length, the vortex shedding frequency and the force coefficients against other studies performed under similar conditions. The dynamic mode decomposition of the pressure fluctuations is used to relate them with the far-field noise. It is shown that, in contrast to what happens for low Mach numbers, quadrupoles have a significant impact mainly in the observers located in the streamwise direction. This effect leads to a global monopole directivity pattern as the shear fluctuations compensate for the lower value of the aeolian tone away from the cross-stream direction.This work was partially financially supported by the Ministerio de Economía, Industria y Competitividad, Secretaría de Estado de Investigación, Desarrollo e Innovación, Spain (refs PID2020-116937RB-C21 and PID2020-116937RB-C22). B. Eiximeno’s work was funded by a contract from the Subprograma de Ayudas Predoctorales given by the Ministerio de Ciencia e Innovación (PRE2021-096927). O. Lehmkuhl’s work was financed by a Ramón y Cajal postdoctoral contract from the Ministerio de Economía y Competitividad, Secretaría de Estado de Investigación, Desarrollo e Innovación, Spain (RYC2018-025949-I).Peer ReviewedPostprint (published version

Fretting fatigue life prediction using the extended finite element method

In this work, fretting fatigue tests available in the literature are modeled using the extended finite element method (XFEM). The aim is to numerically evaluate the stress intensity factors (SIFs) for cracks of different lengths emanating at the end of the contact zone and to estimate the propagation life corresponding to each of the tests. This propagation life is combined with the initiation life calculated analytically using a multiaxial fatigue criterion (Fatemi-Socie), following a initiation-propagation approach for life estimation. The predicted lives are then compared with the reported experimental lives. It is shown that the consideration of the crack-contact interaction through the numerical models tends to improve the life estimation when compared with a fully analytical approach for the calculation of both initiation and propagation lives.Ministerio de Ciencia y Tecnología DPI2007-66995-C0301Ministerio de Ciencia y Tecnología DPI2007-66995-C03-02

Suppression Trial through an Integrated Vector Management of Aedes albopictus (Skuse) Based on the Sterile Insect Technique in a Non-Isolated Area in Spain

In recent years, Aedes albopictus (Skuse, 1984) has expanded its distribution globally due to its high ecological plasticity. This expansion has increased the population’s susceptibility to contracting diseases such as dengue, Zika, and chikungunya, among others, which are transmitted by this mosquito species. In the absence of effective control methods, the application of the sterile insect technique (SIT) is proposed as part of an integrated vector management (IVM) program. From 2007 to 2020, this strategy has been tested in a non-isolated mosquito population urban area of 45 ha, representative of the municipalities of the Valencian region (Spain). The population levels of adult females and eggs collected in the traps have been reduced by 70–80% compared to the control area, demonstrating its efficacy in reducing mosquito populations. This work analyzes the impact of the migration of the wild mosquito population from the peri-urban area to the urban core.This research was funded by La Conselleria de Agricultura, Desarrollo Rural, Emergencia Climática of the Valencian region (Spain).Ciencias Experimentale

Sterile Insect Technique in an Integrated Vector Management Program against Tiger Mosquito Aedes albopictus in the Valencia Region (Spain): Operating Procedures and Quality Control Parameters

The Asian tiger mosquito Aedes albopictus (Skuse, 1894) is an invasive species responsible for the transmission of arboviruses such as dengue, Zika and chikungunya. The rapid expansion of this species globally is the result of a lack of effective control methods. In this context, the sterile insect technique (SIT) is an emerging tool for controlling mosquito populations. The Agriculture Department of the Valencian Region (Spain) is promoting a pilot project to evaluate the efficacy of the sterile insect technique as part of an integrated vector management program against Ae. albopictus. From 2018 to 2020, sterile male releases were carried out in two pilot sites, releasing more than 15 million sterile males over 80 ha. The present work describes the laboratory studies carried out to evaluate the performance of irradiated males to assess the feasibility of the SIT before release in the field, as well as the production and quality control parameters obtained in rearing activities. The obtained values in terms of production and quality control and the proposed rearing methodology can be useful for designing a medium-scale mosquito-rearing pipeline.Ciencias Experimentale

Compressibility effects on the wake dynamics of a circular cylinder

Compressible large-eddy simulations of the flow past a circular cylinder at Reynolds numbers Re = 104 and Mach numbers in the range M = 0.2-1.2 are performed. Changes in the wake dynamics, coherent structures and flow topology brought about compressibility effects are discussed and analysed in detail.This work has been partially financially supported by the Ministerio de Economía y Competitividad, Secretaría de Estado de Investigación, Desarrollo e Innovación, Spain (ref. PID2020-116937RB-C21 and PID2020-116937RB-C22). O.L. has been partially supported by a Ramon y Cajal postdoctoral contract (Ref: RYC2018-025949-I). I.R. also acknowledges fundings by AGAUR (Ref. 2021 SGR 01051).Peer ReviewedPostprint (published version

Real-time monitoring and control for efficient management of drinking water networks: Barcelona case study

Trabajo presentado a la 11th International Conference on Hydroinformatics celebrada en New York (US) del 17 al 21 de agosto de 2014.This research has been partially funded by the DGR of Generalitat de Catalunya (SAC group Ref. 2009/SGR/1491), Doctorat Industrial AGAUR-2013-DI-041 and by EFFINET: Efficient Integrated Real-time Monitoring and Control of Drinking Water Networks (FP7-ICT2011-8-318556).Peer Reviewe