128 research outputs found

    Bottom changes in coastal areas with complex shorelines

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    A model for the sea-bottom change simulations in coastal areas with complex shorelines is proposed. In deep and intermediate water depths, the hydrodynamic quantities are calculated by numerically integrating the contravariant Boussinesq equations, devoid of Christoffel symbols. In the surf zone, the propagation of the breaking waves is simulated by the nonlinear shallow water equations. The momentum equation is solved inside the turbulent boundary layer in order to calculate intrawave hydrodynamic quantities. An integral formulation for the contravariant suspended sediment advection-diffusion equation is proposed and used for the sea-bottom dynamic simulations. The proposed model is applied to the real case study of Pescara harbor (in Italy)

    Numerical simulation of bed evolution dynamics: the Pescara harbor

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    A two-dimensional phase resolving model is used for the computation of the hydrodynamic field in wave-current interaction in the sea regions opposite to the Pescara harbor. The total sediment transport is given by the contribution of the suspended sediment load, calculated by solving the advection-diffusion equation for the suspended sediment concentration, and of the spatial variation of the bed load transport. The proposed model has been used to simulate the silting phenomenon occurring in the sea region opposite to the Pescara harbor in presence of coastal defense structures

    Contravariant Boussinesq equations for the simulation of wave transformation, breaking and run-up

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    We propose an integral form of the fully non-linear Boussinesq equations in contravariant formulation, in which Christoffel symbols are avoided, in order to simulate wave transformation phenomena, wave breaking and near shore currents in computational domains representing the complex morphology of real coastal regions. The motion equations retain the term related to the approximation to the second order of the vertical vorticity. A new Upwind Weighted Essentially Non-Oscillatory scheme for the solution of the fully non- linear Boussinesq equations on generalised curvilinear coordinate systems is proposed. The equations are rearranged in order to solve them by a high resolution hybrid finite volume–finite difference scheme. The conservative part of the above-mentioned equations, consisting of the convective terms and the terms related to the free surface elevation, is discretised by a high-order shock- capturing finite volume scheme; dispersive terms and the term related to the approximation to the second order of the vertical vorticity are discretised by a cell-centred finite difference scheme. The shock-capturing method makes it possible to intrinsically model the wave breaking, therefore no additional terms are needed to take into account the breaking related energy dissipation in the surf zone. The model is applied on a real case regarding the simulation of wave fields and nearshore currents in the coastal region opposite Pescara harbour (Italy)

    Modeling bed evolution using weakly coupled phase-resolving wave model and wave-averaged sediment transport model

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    In this paper, we propose a model for the simulation of the bed evolution dynamics in coastal regions characterized by articulated morphologies. An integral form of the fully nonlinear Boussinesq equations in contravariant formulation, in which Christoffel symbols are absent, is proposed in order to simulate hydrodynamic fields from deep water up to just seaward of the surf zones. Breaking wave propagation in the surf zone is simulated by integrating the nonlinear shallow water equations with a high-order shock-capturing scheme. The near-bed instantaneous flow velocity and the intra-wave hydrodynamic quantities are calculated by the momentum equation integrated over the turbulent boundary layer. The bed evolution dynamics is calculated starting from the contravariant formulation of the advection-diffusion equation for the suspended sediment concentration in which the advective sediment transport terms are formulated according to a quasi-three-dimensional approach, and taking into account the contribution given by the spatial variation of the bed load transport. The model is validated against several tests by comparing numerical results with experimental data. The ability of the proposed model to represent the sediment transport phenomena in a morphologically articulated coastal region is verified by numerically simulating the long-term bed evolution in the coastal region opposite Pescara harbor (in Italy) and comparing numerical results with the field data

    Telli V. Broward County-A Misunderstanding Of County Home Rule And An Abridging Of The Status Of The Constitution\u27s County Officers Who Are Not The Charter\u27s County Officers

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    When a state’s court of last resort renders an opinion that abridges, ignores, and renders meaningless an express provision of that state’s constitution, then that court shall have itself effectuated an amendment to its constitution erroneously and without the approval and longstanding support of the electors of that stat

    Políticas educativas y culturales para adultas y adultos mayores en el municipio de Rosario

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    La presente ponencia tiene como objetivo compartir la experiencia que la Dirección de Adult@s Mayores de la Municipalidad de Rosario viene desarrollando en materia de políticas educativas y culturales. Creemos que el sostenido crecimiento de la población mayor de 65 años que se ha producido en las últimas décadas, debe ir acompañado por políticas activas desde el Estado que tiendan a mejorar su calidad de vida y a garantizar su inclusión social y cultural. Las profundas transformaciones han modificado las maneras de habitar el mundo de todos los actores sociales y los adultos mayores no son la excepción. La realidad contemporánea requiere de propuestas que se adecuen a la nueva coyuntura histórica. En este sentido, nos proponemos políticas integrales centradas en la participación y en el envejecimiento activo, la educación continúa y en el derecho a la integración por mencionar algunos de los principios que orientan nuestras acciones. Entre las propuestas centrales se destacan: El festival Cine “Una mirada Mayor”, único festival cinematográfico destinado exclusivamente a los mayores. Participan destacados actores y directores de nuestro cine nacional y cuenta con una programación que es confeccionada a partir del voto del público. Los Centros de Actividades Integrales para Adultos Mayores, ámbitos de encuentro, socialización y aprendizaje en el que se desarrollan actividades educativas, recreativas, culturales y de actividad física en todos los barrios de la ciudad. “Octubre Mayor” agenda de actividades, fundamentalmente, culturales durante todo el mes. Nos proponemos ofrecer productos culturales de calidad, en tanto factor que contribuya a mejorar su calidad de vida y a acercarlos a una ciudadanía plena. Se le otorga un espacio privilegiado a las actividades en las que los mayores ocupan un lugar protagónico y no de meros espectadores. Ciclos de cine; espectáculos musicales y teatrales, eventos recreativos y conferencias son algunas de las propuestas.Facultad de Trabajo Socia

    Políticas educativas y culturales para adultas y adultos mayores en el municipio de Rosario

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    La presente ponencia tiene como objetivo compartir la experiencia que la Dirección de Adult@s Mayores de la Municipalidad de Rosario viene desarrollando en materia de políticas educativas y culturales. Creemos que el sostenido crecimiento de la población mayor de 65 años que se ha producido en las últimas décadas, debe ir acompañado por políticas activas desde el Estado que tiendan a mejorar su calidad de vida y a garantizar su inclusión social y cultural. Las profundas transformaciones han modificado las maneras de habitar el mundo de todos los actores sociales y los adultos mayores no son la excepción. La realidad contemporánea requiere de propuestas que se adecuen a la nueva coyuntura histórica. En este sentido, nos proponemos políticas integrales centradas en la participación y en el envejecimiento activo, la educación continúa y en el derecho a la integración por mencionar algunos de los principios que orientan nuestras acciones. Entre las propuestas centrales se destacan: El festival Cine “Una mirada Mayor”, único festival cinematográfico destinado exclusivamente a los mayores. Participan destacados actores y directores de nuestro cine nacional y cuenta con una programación que es confeccionada a partir del voto del público. Los Centros de Actividades Integrales para Adultos Mayores, ámbitos de encuentro, socialización y aprendizaje en el que se desarrollan actividades educativas, recreativas, culturales y de actividad física en todos los barrios de la ciudad. “Octubre Mayor” agenda de actividades, fundamentalmente, culturales durante todo el mes. Nos proponemos ofrecer productos culturales de calidad, en tanto factor que contribuya a mejorar su calidad de vida y a acercarlos a una ciudadanía plena. Se le otorga un espacio privilegiado a las actividades en las que los mayores ocupan un lugar protagónico y no de meros espectadores. Ciclos de cine; espectáculos musicales y teatrales, eventos recreativos y conferencias son algunas de las propuestas.Facultad de Trabajo Socia

    Preliminary Study to Develop an Alternative Method for the Non-targeted Determination of Xenobiotics in Food by Means of Ultra High Performance Liquid Chromatography Coupled to High Resolution and Accuracy Mass Spectrometry

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    This preliminary study describes the use of high resolution and accuracy mass spectrometry techniques combined with new generation chemical software products for detecting and identifying contaminants in food commodities. As a first step, the extracts of routine target analysis samples (obtained in our official laboratory responsible for food residues control) were acquired and processed with this method in order to search unknown and non-targeted contaminants in food. In order to verify the feasibility of the presented method, the research has been firstly addressed to untargeted pesticides and their metabolites in stone fruits commodities and tomatoes. The differential analysis carried with Compound Discoverer 2.0 between the investigated unknown sample and the blank matrix sample allowed to remove all the matrix molecular components; Aggregated Computational Toxicology Resource (ACToR) helped to understand and predict chemical interpretation of substances. The acquisition in FullScan-AIF and FullScanddMS2 allowed the clear detection and identification of isobaric compounds such as quinalphos and phoxim. In order to verify that the proposed method is suitable to the scope of application, the main points of SANTE/11813/2017 Document have been followed. The results demonstrate that no false positives and no false negatives have been detected from the analysis of samples spiked with pesticides at 0.010 and 0.10 mg kg−1. This preliminary study has been also tested with a Proficiency Test (EUPT-FV-SM08) and, according to EUPT-FV-SM08 Final Report, our laboratory has been included in the 67% (56) that clearly detected over 70% pesticides. Finally, this method has been extended to other matrices and contaminants

    Políticas educativas y culturales para adultas y adultos mayores en el municipio de Rosario

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    La presente ponencia tiene como objetivo compartir la experiencia que la Dirección de Adult@s Mayores de la Municipalidad de Rosario viene desarrollando en materia de políticas educativas y culturales. Creemos que el sostenido crecimiento de la población mayor de 65 años que se ha producido en las últimas décadas, debe ir acompañado por políticas activas desde el Estado que tiendan a mejorar su calidad de vida y a garantizar su inclusión social y cultural. Las profundas transformaciones han modificado las maneras de habitar el mundo de todos los actores sociales y los adultos mayores no son la excepción. La realidad contemporánea requiere de propuestas que se adecuen a la nueva coyuntura histórica. En este sentido, nos proponemos políticas integrales centradas en la participación y en el envejecimiento activo, la educación continúa y en el derecho a la integración por mencionar algunos de los principios que orientan nuestras acciones. Entre las propuestas centrales se destacan: El festival Cine “Una mirada Mayor”, único festival cinematográfico destinado exclusivamente a los mayores. Participan destacados actores y directores de nuestro cine nacional y cuenta con una programación que es confeccionada a partir del voto del público. Los Centros de Actividades Integrales para Adultos Mayores, ámbitos de encuentro, socialización y aprendizaje en el que se desarrollan actividades educativas, recreativas, culturales y de actividad física en todos los barrios de la ciudad. “Octubre Mayor” agenda de actividades, fundamentalmente, culturales durante todo el mes. Nos proponemos ofrecer productos culturales de calidad, en tanto factor que contribuya a mejorar su calidad de vida y a acercarlos a una ciudadanía plena. Se le otorga un espacio privilegiado a las actividades en las que los mayores ocupan un lugar protagónico y no de meros espectadores. Ciclos de cine; espectáculos musicales y teatrales, eventos recreativos y conferencias son algunas de las propuestas.Facultad de Trabajo Socia

    Video-based on-ward supervision for final year medical students

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    Background: Constructive feedback is an essential element of the educational process, helping trainees reach their maximum potential and increasing their skill level. Video-based feedback has been described as highly effective in various educational contexts. The present study aimed to evaluate the feasibility and acceptability of video-based, on-ward supervision for final year students in a clinical context with real patients. Methods: Nine final year medical students (three male, six female; aged 25.1 ± 0.7 years) and eight patients (five male, three female; aged 59.3 ± 16.8 years) participated in the pilot study. Final year students performed routine medical procedures at bedside on internal medicine wards at the University of Heidelberg Medical Hospital. Students were filmed and were under supervision. After performing the procedures, an oral feedback loop was established including student, patient and supervisor feedback on communicative and procedural aspects of skills performed. Finally, students watched their video, focusing on specific teachable moments mentioned by the supervisor. Written evaluations and semi-structured interviews were conducted that focused on the benefits of video-based, on-ward supervision. Interviews were analysed qualitatively, using open coding to establish recurring themes and overarching categories to describe patients’ and students’ impressions. Descriptive, quantitative analysis was used for questionnaire data. Results: Supervised, self-chosen skills included history taking (n = 6), physical examination (n = 1), IV cannulation (n = 1), and ECG recording (n = 1). The video-based, on-ward supervision was well accepted by patients and students. Supervisor feedback was rated as highly beneficial, with the video material providing an additional opportunity to focus on crucial aspects and to further validate the supervisor’s feedback. Students felt the video material would be less beneficial without the supervisor’s feedback. The setting was rated as realistic, with filming not influencing behaviour. Conclusion: Video-based, on-ward supervision may be a powerful tool for improving clinical medical education. However, it should be regarded as an additional tool in combination with supervisors’ oral feedback. Acceptance was high in both students and patients. Further research should address possibilities of efficiently combining and routinely establishing these forms of feedback in medical education
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