Search

El presente artículo describe la metodología que se implementó para la rehabilitación del parque metropolitano de Bosa en la ciudad de Bogotá, con el propósito de ser consolidado como un territorio de cultura e integración ciudadana. Esto a partir del análisis de una estrategia proyectual de re-activación de vacíos urbanos, que tiene como fin el mejoramiento de la calidad de vida en los barrios periféricos de la ciudad, con la implementación de conceptos básicos de diseño como la continuidad y la permeabilidad se llegará al mejoramiento integral de un lugar de la ciudad en específico, además se establecen diferentes estrategias de solución como lo son las redes urbanas, y los arcos de desarrollo, todo esto a través de etapas progresivas. Con esta metodología se permite mejorar el espacio urbano existente y que se complemente con un proyecto arquitectónico responsable con el medio ambiente, dando soluciones fuera de las convencionales para resolver las diferentes problemáticas específicas del lugar, de esta forma surge LA BIBLIOTECA CENTRO CÍVICO Bosa - El Recreo.

Competition is a major factor structuring plant communities and controlling their productivity. The functional similarity between the interacting species and the context resource availability are assumed to be most critical factors that modulate the strength, sign, and outcome of plant competition, yet their roles and interactions are subjected to debate. In a glasshouse experiment, we constructed monocultures and bi-specific cultures of three common perennial grasses of Mediterranean drylands, the short grass Brachypodium retusum and the tussock grasses Stipa tenacissima and Lygeum spartum, and investigated how the functional similarity between these species modulate their interactions and culture productivity under contrasting levels of water availability. Regardless the degree of functional similarity between the interacting species, B. retusum consistently exhibited a greater competitive ability than the other two species, followed by L. spartum, and with S. tenacissima behaving as the weakest competitor. Bi-specific cultures of B. retusum and either L. spartum or S. tenacissima produced higher biomass than the average biomass of the respective monocultures (i.e. overyielding), whereas the combination of the most similar species, L. spartum—S. tenacissima, which exhibited the highest competition symmetry (i.e., the more similar mutual impact), did not show any significant overyielding. Higher water availability increased productivity and promoted transgressive overyielding for the most dissimilar species, B. retusum and L. spartum, which however exhibited intermediate competition asymmetry. This study calls attention to the thin line between differences in functional traits and competition asymmetry that could eventually lead to either competitive exclusion or resource partitioning and coexistence.

El presente artículo describe la metodología que se implementó para la rehabilitación del parque metropolitano de Bosa en la ciudad de Bogotá, con el propósito de ser consolidado como un territorio de cultura e integración ciudadana. Esto a partir del análisis de una estrategia proyectual de re-activación de vacíos urbanos, que tiene como fin el mejoramiento de la calidad de vida en los barrios periféricos de la ciudad, con la implementación de conceptos básicos de diseño como la continuidad y la permeabilidad se llegará al mejoramiento integral de un lugar de la ciudad en específico, además se establecen diferentes estrategias de solución como lo son las redes urbanas, y los arcos de desarrollo, todo esto a través de etapas progresivas. Con esta metodología se permite mejorar el espacio urbano existente y que se complemente con un proyecto arquitectónico responsable con el medio ambiente, dando soluciones fuera de las convencionales para resolver las diferentes problemáticas específicas del lugar, de esta forma surge LA BIBLIOTECA CENTRO CÍVICO Bosa - El Recreo.

Fabrica Arte VIBO se proyecta como un elemento arquitectónico de jerarquía urbana, emplazado dentro de borde sur de los cerros orientales, territorio delimitado por las fronteras administrativas de las localidades de Santa Fe y San Cristóbal en ciudad de Bogotá. Elemento dentro del cual se consolida la actividad de fabricación de elementos en vidrio bajo una técnica de carácter patrimonial, que se conserva en un territorio con alto valor histórico segregado de la centralidad principal de la ciudad debido a un largo proceso de descentralización de actividades productivas del centro urbano. El planteamiento del proyecto parte del concepto “Terrain Vague” propuesto por Ignasi De Solá Morales bajo el cual se definen los vacíos urbanos como elementos residuales de procesos de globalización de las ciudades. Desde este concepto se estructura una metodología de estudio del territorio compuesta por un análisis histórico de las dinámicas del vidrio en la construcción de ciudad y su representación en esta, y un análisis funcional del contexto urbano y las dinámicas actuales que rigen el funcionamiento de la fábrica. Entendiendo el territorio como una unidad funcional sobre la cual se desarrollan dinámicas socio-culturales a partir de actividades productivas, el proyecto Fabrica Arte VIBO no solo resignifica la actividad en relación con su contexto inmediato por medio del elemento arquitectónico, si no que permite una re vinculación territorial del centro histórico tradicional de la ciudad y las localidades de Santa Fe Y San Cristóbal por medio de una revaloración del patrimonio arquitectónico asociado por medio del vidrio, y vinculado urbanamente por medio de un itinerario cultural.

The somatosensory system of mammals includes sensory hairs (vibrissae) for tactile perception during near field exploration. Interacting with the environment, the tactile hair transfers mechanical stimuli to the hair follicle (follicle-sinus complex). The follicle-sinus complex transduces the singnals and transmits them to the central nervous system. Rats, e.g., are able to characterize objects with regard to their surface and geometric shape. Inspired by the biological paragon, the implementation of a vibrissa-like tactile sensor is an object of engineering research. According to the sensory organ, the function of a technical vibrissa is based on the recording of stimuli by the artificial hair shaft and their measurement at the support. This enables the detection of technically relevant information. In this context, the present work focuses on the task of object contour reconstruction. For that purpose, the support reactions are determined during scanning of an object. Previous investigations have been restricted on scanning objects with convex contours. This is due to the limitation of mechanical models to single-point contact scenarios. Goal of the present work is the consideration of multiple contact points between sensor shaft and object contour. The sensor shaft is modelled as a Euler-Bernoulli beam. The mathematical/theoretical description of the deformation of the beam during quasi-static scanning results in a multipoint boundary value problem with switching point. In order to simulate scanning sweeps along two different object types, the corresponding multipoint boundary value problems are solved by applying a shooting method incooperating a Runge Kutta Method of 4th order. The support reactions are calculated during scanning. It shows that multi-point contacts can be identified in the support reactions. The simulation is validated by experiments using selected examples.

The somatosensory system of mammals includes sensory hairs (vibrissae) for tactile perception during near field exploration. Interacting with the environment, the tactile hair transfers mechanical stimuli to the hair follicle (follicle-sinus complex). The follicle-sinus complex transduces the singnals and transmits them to the central nervous system. Rats, e.g., are able to characterize objects with regard to their surface and geometric shape. Inspired by the biological paragon, the implementation of a vibrissa-like tactile sensor is an object of engineering research. According to the sensory organ, the function of a technical vibrissa is based on the recording of stimuli by the artificial hair shaft and their measurement at the support. This enables the detection of technically relevant information. In this context, the present work focuses on the task of object contour reconstruction. For that purpose, the support reactions are determined during scanning of an object. Previous investigations have been restricted on scanning objects with convex contours. This is due to the limitation of mechanical models to single-point contact scenarios. Goal of the present work is the consideration of multiple contact points between sensor shaft and object contour. The sensor shaft is modelled as a Euler-Bernoulli beam. The mathematical/theoretical description of the deformation of the beam during quasi-static scanning results in a multipoint boundary value problem with switching point. In order to simulate scanning sweeps along two different object types, the corresponding multipoint boundary value problems are solved by applying a shooting method incooperating a Runge Kutta Method of 4th order. The support reactions are calculated during scanning. It shows that multi-point contacts can be identified in the support reactions. The simulation is validated by experiments using selected examples.

The somatosensory system of mammals includes sensory hairs (vibrissae) for tactile perception during near field exploration. Interacting with the environment, the tactile hair transfers mechanical stimuli to the hair follicle (follicle-sinus complex). The follicle-sinus complex transduces the singnals and transmits them to the central nervous system. Rats, e.g., are able to characterize objects with regard to their surface and geometric shape. Inspired by the biological paragon, the implementation of a vibrissa-like tactile sensor is an object of engineering research. According to the sensory organ, the function of a technical vibrissa is based on the recording of stimuli by the artificial hair shaft and their measurement at the support. This enables the detection of technically relevant information. In this context, the present work focuses on the task of object contour reconstruction. For that purpose, the support reactions are determined during scanning of an object. Previous investigations have been restricted on scanning objects with convex contours. This is due to the limitation of mechanical models to single-point contact scenarios. Goal of the present work is the consideration of multiple contact points between sensor shaft and object contour. The sensor shaft is modelled as a Euler-Bernoulli beam. The mathematical/theoretical description of the deformation of the beam during quasi-static scanning results in a multipoint boundary value problem with switching point. In order to simulate scanning sweeps along two different object types, the corresponding multipoint boundary value problems are solved by applying a shooting method incooperating a Runge Kutta Method of 4th order. The support reactions are calculated during scanning. It shows that multi-point contacts can be identified in the support reactions. The simulation is validated by experiments using selected examples.

En el presente documento abordamos la problemática actual donde nos enfrentamos ante situaciones que superan las estructuras legales predefinidas en un ordenamiento jurídico como el nuestro. La globalización, el acceso a la información, las nuevas plataformas tecnológicas, el emprendimiento, entre otros, son factores que han cobrado especial relevancia en el contexto nacional, y si a esto le agregamos la agitada dinámica que rodea el mundo de los negocios, donde su común denominador es el lucro y el progreso, surgen problemas que el derecho comercial debe regular, como lo son las plataformas virtuales donde se desarrollan proyectos denominados “crowdfunding” donde se publican ideas de emprendimiento que necesitan de fondos de inversión para su ejecución, evitando de esta manera que tanto innovadores e inversionistas busquen la intermediación de terceros como lo pueden ser entidades financieras y que simplemente a través de estas plataformas virtuales se cree el contacto y la posibilidad de desarrollar los proyectos aportando por un lado las ideas y por otro el capital necesario para la ejecución de los mismos.