Escritura de numerales arábigos en una tarea de dictado: la notación de los ceros

Este trabajo se centra en la aplicación de tareas que permiten observar el comportamiento de las producciones numéricas escritas de niños de 1o, 2o y 3º de primaria

The Crimes in the Murderer’s Mind: An Analytic Approach to Edgar Allan Poe’s Criminals.

Trabajo de fin de Grado. Grado en Estudios Ingleses. Curso académico 2021-2022Este ensayo es un análisis de la figura del criminal en los cuentos de Edgar Allan Poe. Estos relatos presentan personajes desequilibrados que representan mejor la imagen de un criminal psicótico. Poe es muy hábil a la hora de infundir un choque emocional en sus crímenes de ficción, permitiendo a los lectores seguir únicamente los pensamientos de un narrador desequilibrado. Los criminales dementes de los relatos de Poe sirven como fuentes de información poco fiables para entender la propia historia. Los lectores no son más que marionetas de los manipuladores narradores, que les obligan a seguir los propios impulsos de los personajes, invirtiendo así el efecto moral de los cuentos de Poe. Poe inculca a algunos de sus criminales un fuerte deseo de cometer un asesinato. Ningún ser humano puede escapar o controlar este deseo porque satisface todos los deseos secretos de los criminales desequilibrados. Lo absurdo de los actos de los criminales representa el vínculo entre el hombre y su propia destrucción. Lo cierto es que muchos de los narradores de los relatos encarnan la caída y la destrucción del hombre. El hombre encuentra su propia deposición al romper con una fuente superior de vida y luz, en última instancia Dios. La identidad de los criminales de Poe está en Dios, pero cuando rechazan al creador para erigirse en creadores y diseñadores de su propia realidad, se convierten en proscritos de la naturaleza y de lo divino.This essay is an analysis of the figure of the criminal in the short stories of Edgar Allan Poe. These stories feature unbalanced characters who best represent the image of a psychotic criminal. Poe is skilled at instilling emotional shock in his fictional crimes, allowing readers to only follow the thoughts of an unbalanced narrator. The insane criminals in Poe's stories serve as untrustworthy sources of information for understanding the story itself. Readers are merely puppets of the manipulative narrators, who force them to follow the characters' own impulses and thus reverse the moral effect of Poe's tales. Poe instills in some of his criminals a strong desire to commit murder. No human being can escape or control this desire because it satisfies all of the unbalanced criminals' secret desires. The preposterousness of the criminals’ acts represents the link between man and his own destruction. The truth is that many of the narrators of the stories embody the downfall and destruction of man. Man finds his own deposition by breaking with a higher source of life and light, ultimately God. Poe’s criminals’ identity is in God, but when they reject the creator to establish themselves as creators and designers of their own reality, they become outlaws of nature and the divine

Three-dimensional numerical simulations of free convection in a layered porous enclosure

Three-dimensional numerical simulations are carried out for the study of free convection in a layered porous enclosure heated from below and cooled from the top. The system is defined as a cubic porous enclosure comprising three layers, of which the external ones share constant physical properties and the internal layer is allowed to vary in both permeability and thermal conductivity. The model is based on Darcy's law and the Boussinesq approximation. A parametric study to evaluate the sensitivity of the Nusselt number to a decrease in the permeability of the internal layer shows that strong permeability contrasts are required to observe an appreciable drop in the Nusselt number. If additionally the thickness of the internal layer is increased, a further decrease in the Nusselt number is observed as long as the convective modes remain the same, if the convective modes change the Nusselt number may increase. Decreasing the thermal conductivity of the middle layer causes first an increment in the Nusselt number and then a drop. On the other hand, the Nusselt number decreases in an approximately linear trend when the thermal conductivity of the layer is increased

Geothermal systems simulation: A case study

Geothermal reservoir simulation is a key step for developing sustainable and efficient strategies for the exploitation of geothermal resources. It is applied in the assessment of several areas of reservoir engineering, such as reservoir performance and re-injection programs, pressure decline in depletion, phase transition conditions, and natural evolution of hydrothermal convection systems. Fluid flow and heat transfer in rock masses, fluid-rock chemical interaction and rock mass deformation are some of the processes addressed in reservoir modelling. The case study of the Las Tres Virgenes (LTV) geothermal field (10 MWe), Baja California Sur, Mexico is presented. Three dimensional (3D) natural state simulations were carried out from emplacement and cooling of two spherical magma chambers using a conductive approach. A conceptual model of the volcanic system was developed on a lithostratigraphic and geochronological basis. Magma chamber volumes were established from eruptive volumes estimations. The thermophysical properties of the medium were assumed to correspond to the dominant rock in each lithological unit as an initial value, and further calibration was made considering histograms of experimentally obtained thermophysical properties of rocks. As the boundaries of the model lie far from the thermal anomaly, we assumed specified temperature boundaries. A Finite Volume (FV) numerical scheme was implemented in a Fortran 90 code to solve the heat equation. Static formation temperatures from well logs were used for validation of the numerical results. Good agreement was observed in those geothermal wells dominated by conductive heat transfer. For other wells, however, it is clear that conduction alone cannot explain observed behaviour, three-dimensional convective models are being implemented for future multiphysics simulations

Indicador espacial del metabolismo urbano. Huella Ecológica de la ciudad de Tandil, Argentina

Además de problemas urbanos evidentes -contaminación, residuos, etc.-, existe un problema asociado a la propia dinámica del sistema urbano que es de interés: la apropiación creciente de ecosistemas productivos externos destinados a satisfacer los requerimientos del metabolismo urbano de la ciudad de Tandil, Argentina. Se emplea para su cálculo, la Huella Ecológica (HE) (Rees 1996a; Wackernagel 1996) que permite evaluar en términos espaciales -hectáreas- los requerimientos de alimentos, combustibles, productos forestales y suelo para la ocupación directa; además del espacio necesario para la absorción de residuos y calor disipado. La HE de Tandil resultó ser deficitaria en 77.708,9 ha, y harían falta unas 17,2 veces la superficie de la ciudad para cubrir las necesidades del metabolismo urbano en el período considerado.Besides evident urban problems -waste, pollution, etc. - there are an urban system dynamic's problem it is interesting: growing productive ecosystems appropriation destining to satisfy urban metabolism requires in Tandil city, Argentina. We use for calculating it, Ecological Footprint concept (Rees 1996a; Wackernagel 1996), it allow us assess in superficial terms -hectares- food, combustible, forestall products required as well as, direct soil occupation necessary to wastes and dissipate warm absorption. Ecological Footprint there has a deficit around 77.708,9 ha. And it will be 17, 2 times city area to cover urban metabolism requires in the considered period

Strategic Knowledge Management Within Subsidised Entrepreneurial University-Industry Partnerships

Purpose: The purpose of this paper is to analyse how collaborative/opportunistic behaviours within subsidised university-industry partnerships are influencing the design/implementation of strategic knowledge management practices in emerging economies. Design/methodology/approach: The proposed conceptual model was analysed with a retrospective multiple case study approach integrated by four subsidised entrepreneurial universities-industry partnerships of the Incentive Programme for Innovation from 2009 to 2014 in Mexico. Findings: Entrepreneurial universities and industrial organisations confirm insights about dual collaborative-opportunistic behaviour within subsidised partnerships. The main effects of behaviours represent an increment in the knowledge management costs during the monitoring stages. The ex ante collaboration agreement anticipated and protected intellectual capabilities. Research limitations/implications: This research contributes to the ongoing discussion about public administrations’ opportunistic behaviours in emerging economies (Tripsas et al., 1995), the effectiveness of the innovation and entrepreneurial programmes (Guerrero and Urbano, 2019b), and the link between dual behaviours (collaborative and opportunistic) and knowledge management practices (de Wit-de Vries et al., 2018). Practical implications: New questions emerged about the effectiveness of subsidies as new modes of knowledge generation among entrepreneurial universities and industrial organisations, as well as the need for implementing strategic knowledge management practices in the public administration. Social implications: For policymakers, the study presents insights about the effectiveness of public resources. Policymakers should understand challenges and re-define/re-incentivize the productive value chain as well as implement mechanisms to control opportunistic behaviours on potential subsidised firms. Originality/value: The paper contributes to the academic debate about how entrepreneurial universities and industrial organisations are strategically managing their knowledge when participating in subsidised partnerships in emerging economies

La práctica docente a partir del modelo DECA y la teoría de las situaciones didácticas

El presente trabajo da cuenta de las características de dos modelos de resolución de problemas que se han aplicado en cursos de práctica docente con estudiantes para profesores de Matemáticas, en torno a la enseñanza de los conceptos matemáticos en la Educación básica y media del Distrito Capital. Algunas categorías teóricas para este análisis son las de conocimiento práctico, conocimiento didáctico, situación fundamental, devolución, contrato didáctico, entre otros. Se presentan algunas conclusiones a manera de análisis en los modelos de enseñanza, referidas a los tipos de razonamiento pedagógico en las prácticas docentes de los profesores de matemáticas, en el diseño y planeación del trabajo de aula, a partir de lo que se ha denominado el Modelo DECA y la Teoría de las situaciones didácticas de Guy Brousseau