El funcionalismo y estructura social como posturas teóricas de un análisis tutorial

Este artículo expone el marco teórico-conceptual del funcionalismo y estructura social para analizar el programa de tutorías. Se complementará el enfoque con la teoría general de sistemas, como apoyo para sustentar la función y estructura del programa de tutorías. El proceso de comunicación que se da entre tutor y tutorado; el proceso de aprendizaje y el aprendizaje significativo; la teoría de la percepción social; la persuasión como forma de control social, También se revisará el proceso, las principales teorías de persuasión y algunas estrategias persuasivas.

Acción tutorial y competencias transversales: alcance de la contribución de los/as tutores/as de Filosofía y Letras, UA

La contribución que nos proponemos presentar atiende dos vertientes de la investigación que hemos llevado a cabo en este curso 2014/2015 en la red en investigación en docencia universitaria dedicada a la Acción tutorial de nuestro centro (Filosofía y Letras, UA). En un primer tiempo, daremos cuenta brevemente del análisis de los resultados obtenidos en las ediciones anteriores. Para ello expondremos cuestiones organizativas que han pretendido conseguir un mayor alcance de la labor de los tutores en colaboración con los tutores par, analizaremos y evaluaremos las medidas de mejora implementadas en el transcurso de las ediciones. En un segundo tiempo, analizaremos y evaluaremos el alcance del equipo de la Acción tutorial en su apoyo a los estudiantes en la adquisición de las competencias transversales. Nuestra investigación tiene como objetivo principal la medición de resultados obtenidos desde la implementación de la figura del tutor par en colaboración con el tutor docente así como la ideación de medidas de optimización para asegurar el espacio necesario para el funcionamiento correcto y pleno de la Acción Tutorial en todas sus dimensiones.

Tutorial de R-Text Mining Solution

R.TeMiS (R Text MIning Solution) (Bouchet-Valat & Bastin, 2013) es un paquete de R (RcmdrPlugin.temis) (Bouchet-Valat, 2016), concebido como plugin de R Commander, que permite analizar, manipular y crear corpus de textos (Garnier, 2014). La arquitectura estadística de RTemis corre a cargo del paquete tm desarrollado por Ingo Feinerer (Feinerer, 2008 ; 2011 ; Feinerer, Hornik y Meyer, 2008). R.TeMiS se ha completado con otros paquetes clásicos de R, como el paquete para la representación de los análisis factoriales de correspondencias de Nenadic y Greenacre (2007). También se han desarrollado paquetes específicos para facilitar el uso de R.TeMiS en los estudios de prensa, por ejemplo para la gestión de los corpus de artículos de prensa de la base de datos Factiva. R.TeMiS se presenta como un plugin de R Commander, desarrollado por Fox (2005), lo cual facilita su utilización para los no usuarios de R.

Development of a Coupling Model for Fluid-Structure Interaction using the Mesh-free Finite Element Method and the Lattice Boltzmann Method

In the presented thesis work, the meshfree method with distance fields was coupled with the lattice Boltzmann method to obtain solutions of fluid-structure interaction problems. The thesis work involved development and implementation of numerical algorithms, data structure, and software. Numerical and computational properties of the coupling algorithm combining the meshfree method with distance fields and the lattice Boltzmann method were investigated. Convergence and accuracy of the methodology was validated by analytical solutions. The research was focused on fluid-structure interaction solutions in complex, mesh-resistant domains as both the lattice Boltzmann method and the meshfree method with distance fields are particularly adept in these situations. Furthermore, the fluid solution provided by the lattice Boltzmann method is massively scalable, allowing extensive use of cutting edge parallel computing resources to accelerate this phase of the solution process. The meshfree method with distance fields allows for exact satisfaction of boundary conditions making it possible to exactly capture the effects of the fluid field on the solid structure.

Investigating the mesh dependency and upscaling of 3D grain-based models for the simulation of brittle fracture processes in low-porosity crystalline rock

The application of 3D grain-based modelling techniques is investigated in both small and large scale 3DEC models, in order to simulate brittle fracture processes in low-porosity crystalline rock. Mesh dependency in 3D grain-based models (GBMs) is examined through a number of cases to compare Voronoi and tetrahedral grain assemblages. Various methods are used in the generation of tessellations, each with a number of issues and advantages. A number of comparative UCS test simulations capture the distinct failure mechanisms, strength profiles, and progressive damage development using various Voronoi and tetrahedral GBMs. Relative calibration requirements are outlined to generate similar macro-strength and damage profiles for all the models. The results confirmed a number of inherent model behaviors that arise due to mesh dependency. In Voronoi models, inherent tensile failure mechanisms are produced by internal wedging and rotation of Voronoi grains. This results in a combined dependence on frictional and cohesive strength. In tetrahedral models, increased kinematic freedom of grains and an abundance of straight, connected failure pathways causes a preference for shear failure. This results in an inability to develop significant normal stresses causing cohesional strength dependence. In general, Voronoi models require high relative contact tensile strength values, with lower contact stiffness and contact cohesional strength compared to tetrahedral tessellations. Upscaling of 3D GBMs is investigated for both Voronoi and tetrahedral tessellations using a case study from the AECL’s Mine-by-Experiment at the Underground Research Laboratory. An upscaled tetrahedral model was able to reasonably simulate damage development in the roof forming a notch geometry by adjusting the cohesive strength. An upscaled Voronoi model underestimated the damage development in the roof and floor, and overestimated the damage in the side-walls. This was attributed to the discretization resolution limitations.

D3 Tutorial 3

For the first part of the tutorial, use results.csv. For the second part use the CPI_October file.

Size selectivity of diamond and square mesh cod ends for four by-catch species in the crustacean fishery off the Portuguese south coast

The effects of an increase in cod end mesh size from 55 to 60 and 70 mm and a change of mesh configuration from 55 mm diamond to 55 turn square mesh on the size selectivity of four by-catch species (the red shrimp Aristeus antennatus, the European hake Merluccius merluccius, the horse mackerel Trachurus trachurus and the blue whiting Micromesistius poutassou) commonly captured in the crustacean fishery off the Portuguese south coast, were evaluated. Selectivity parameters for blue whiting, the most abundant species in the catches, were estimated taking into account between-haul variation, while for the remaining species, captured in much lower quantities, the selectivity estimates were based on pooled data by length class for all hauls within the same cod end. Length at 50% retention, L-50, was found to increase with mesh size and with the change in mesh configuration for all the studied species. For blue whiting trawling depth and cod end catch were found to play a role in between-haul variation by increasing L-50 as well. The results suggest that an increase in the current minimum mesh size of 55-70 mm would be advisable to be compatible with the minimum landing sizes (MLSs) of 29 mm carapace length and 27 cm total length for red shrimp and hake, respectively, while it would greatly reduce the amount of discards, particularly those for blue whiting, that accounted for approximately 50% of the total catch weight. Horse mackerel was the only species for which the use of a larger mesh size would result in a significant escapement of individuals above the MLS of 15 cm. (C) 2002 Elsevier Science B.V. All rights reserved.

Size selectivity of diamond and square mesh cod ends for rose shrimp (Parapenaeus longirostris) and Norway lobster (Nephrops norvegicus) off the Portuguese south coast

The effects of an increase in cod end mesh size from 55 to 60 and 70 mm and a change of mesh configuration from diamond to square mesh on the size selectivity for rose shrimp Parapenaeus longirostris and Norway lobster Nephrops norvegicus captured off the Portuguese south coast were evaluated. The results were analysed taking into account between-haul variation in selectivity, and indicate a significant increase in L-50 for rose shrimp with an increase in mesh size or with the use of a square mesh cod end, while for Norway lobster only mesh configuration was found to affect this parameter. Two other important external variables were identified; the trawling depth and the cod end catch, which influence between-haul variation, by increasing the selection range for rose shrimp and Norway lobster, respectively. The results obtained suggest that an increase in the current minimum mesh size of 55 mm would be advisable for rose shrimp in order to respect the minimum landing size of 24 mm carapace length presently established for this species. Moreover, trawling for rose shrimp should be avoided at depths above 200 m, in order to avoid catches consisting almost exclusively of juveniles. Such an increase in mesh size would have a minor impact in terms of losses of individuals above the minimum landing size for Norway lobster and would contribute to reducing the amount of discards in this fishery. (C) 2002 Elsevier Science B.V. All rights reserved.