La imagen de Andalucía como destino turístico por parte de los países centroeuropeos

The image of a tourist destination is a key factor in the tourists' decision to choose a place to visit. This dissertation contains exploratory-descriptive research in which the image of the region of Andalusia as a tourist destination has been analysed. Through a review of the literature, general information has been collected on the concept of image along with its characteristics, followed by the review of other relevant elements that must be taken into account when it comes to the image of a tourist destination, such as the formation of the image or the factors associated with it. Besides, empirical research has been carried out, which includes a study of the image of the selected destination through a questionnaire aimed only at tourists who have previously visited the region and who come from Central European countries, consisting of a sample of 102 respondents.Universidad de Sevilla. Grado en Turism

3D Visual Data-Driven Spatiotemporal Deformations for Non-Rigid Object Grasping Using Robot Hands

Sensing techniques are important for solving problems of uncertainty inherent to intelligent grasping tasks. The main goal here is to present a visual sensing system based on range imaging technology for robot manipulation of non-rigid objects. Our proposal provides a suitable visual perception system of complex grasping tasks to support a robot controller when other sensor systems, such as tactile and force, are not able to obtain useful data relevant to the grasping manipulation task. In particular, a new visual approach based on RGBD data was implemented to help a robot controller carry out intelligent manipulation tasks with flexible objects. The proposed method supervises the interaction between the grasped object and the robot hand in order to avoid poor contact between the fingertips and an object when there is neither force nor pressure data. This new approach is also used to measure changes to the shape of an object’s surfaces and so allows us to find deformations caused by inappropriate pressure being applied by the hand’s fingers. Test was carried out for grasping tasks involving several flexible household objects with a multi-fingered robot hand working in real time. Our approach generates pulses from the deformation detection method and sends an event message to the robot controller when surface deformation is detected. In comparison with other methods, the obtained results reveal that our visual pipeline does not use deformations models of objects and materials, as well as the approach works well both planar and 3D household objects in real time. In addition, our method does not depend on the pose of the robot hand because the location of the reference system is computed from a recognition process of a pattern located place at the robot forearm. The presented experiments demonstrate that the proposed method accomplishes a good monitoring of grasping task with several objects and different grasping configurations in indoor environments.The research leading to these result has received funding from the Spanish Government and European FEDER funds (DPI2015-68087R), the Valencia Regional Government (PROMETEO/2013/085) as well as the pre-doctoral grant BES-2013-062864

Detección de deformaciones 3D calculando esqueletos de curvaturas

El artículo presenta un método de análisis 3D para medir la variación en superficies planas. El método está orientado a la detección de deformaciones elásticas en objetos formados por superficies planas. Estas deformaciones son causadas habitualmente cuando dos cuerpos, uno sólido y otro elástico, intersectan, generando una presión de contacto entre sus caras. El método describe una estrategia para modelar la forma de las deformaciones, usando una aproximación matemática basada principalmente en dos conceptos: Histograma y Mapa de Curvatura. En concreto se describe el algoritmo encargado de la detección de deformaciones, con el objetivo de realizar tareas de control visual e inspecciones para el proceso de manipulado con manos robóticas. Los resultados de varios experimentos se muestran de tal forma que se logra evaluar la validez y robustez del método para detectar y medir deformaciones en tareas de agarre. Para realizar estos experimentos, varias escenas virtuales fueron creadas con el fin de simular el contacto entre los dedos de una mano robot y un objeto elástico.La investigación que nos ha llevado a estos resultados ha sido financiada por el Gobierno Español y lo fondos europeos FEDER (DPI2012-32390) y el Gobierno Regional de Valencia (PROMETEO/2013/085)

Visual perception for the 3D recognition of geometric pieces in robotic manipulation

During grasping and intelligent robotic manipulation tasks, the camera position relative to the scene changes dramatically because the robot is moving to adapt its path and correctly grasp objects. This is because the camera is mounted at the robot effector. For this reason, in this type of environment, a visual recognition system must be implemented to recognize and “automatically and autonomously” obtain the positions of objects in the scene. Furthermore, in industrial environments, all objects that are manipulated by robots are made of the same material and cannot be differentiated by features such as texture or color. In this work, first, a study and analysis of 3D recognition descriptors has been completed for application in these environments. Second, a visual recognition system designed from specific distributed client-server architecture has been proposed to be applied in the recognition process of industrial objects without these appearance features. Our system has been implemented to overcome problems of recognition when the objects can only be recognized by geometric shape and the simplicity of shapes could create ambiguity. Finally, some real tests are performed and illustrated to verify the satisfactory performance of the proposed system.The research leading to these result has received funding from the Spanish Government and European FEDER funds (DPI2012-32390) and the Valencia Regional Government (PROMETEO/2013/085)

Mantenimiento y modernización de obras civiles, obras eléctricas y de cableado estructurado, y equipos electromecánicos en el centro administrativo municipal (Medellín) y las sedes externas

El acompañamiento en la ejecución de mantenimientos preventivos y correctivos fueron principalmente las actividades en las que se basó el contrato de aprendizaje; además, el apoyo a la unidad de mantenimiento fue fundamental para la solución de problemas eléctricos reportados en la plataforma del CSC (Centro de Servicios Compartidos). En esta plataforma se reportan todo tipo de solicitudes de servicios eléctricos, tales como el cambio de un tomacorriente, revisión de un disparo de una protección en un tablero de distribución, problemas con las luminarias de algún sitio, entre otros. Durante los mantenimientos en las subestaciones se presentaron problemas con los sistemas de aire acondicionado de precisión del Data-Center, problemas con las transferencias automáticas y problemas con los arranques de la planta de respaldo. Debido a los problemas presentados anteriormente, se llevó a cabo la elaboración de protocolos de mantenimiento con el fin de poder estandarizar y realizar una lista de chequeo de las actividades que se deben realizar antes, durante y después de un mantenimiento programado. Por otro lado, se prestó apoyo en el proceso de adjudicación del contrato de mantenimiento, revisando las ofertas de los proponentes, las cantidades de obra, los APU y experiencias certificadas de los proponentes. Luego de adjudicado el contrato se prestó apoyo en la supervisión del contrato, realizando visitas técnicas para identificar las necesidades eléctricas que se tienen en el lugar y de esta forma, de la mano de la interventoría y la empresa contratista, poder dar solución a estas necesidades. Terminado el contrato queda como resultado unas instalaciones eléctricas más confiables con sus debidos mantenimientos realizados o cambios respectivos, que prestan una mayor seguridad al sitio y mitigan los riesgos eléctricos a los cuales se pueden ver expuestos los funcionarios cuando se tienen instalaciones eléctricas a las cuales no se les realiza ningún tipo de mantenimiento. Palabras claves: Mantenimiento eléctrico, equipos electromecánicos, redes eléctrica

Diseño e implementación de un sistema de evaluación docente

Mateo Torres, V. (2010). Diseño e implementación de un sistema de evaluación docente. http://hdl.handle.net/10251/10297.Archivo delegad

Temporomandibular chronic dislocation : the long-standing condition

The temporomandibular joint (TMJ) dislocation can be categorised into three groups: acute, habitual or recurrent and long-standing. The long-standing or protracted lower jaw dislocation refers to a condition that persists for more than one month without reduction. There are a great variety of methods for its treatment, from the manual or non-surgical, to surgical ones like the indirect approach (conservative surgical approach) and direct approach (open joint). Additional procedures in unsuccessful cases may include extra-articular orthognathic techniques to correct a malocclusion until joint replacement. We report four new cases with a minimum of 6 weeks dislocation who were seen since 1995 to 2015 in the Maxillofacial Department of the Clínico Hospital (Valencia, Spain), in which the mean age was 57.5 years. Most of them were bilateral and the gender was predominantly female. Additionally, we have reviewed the related literature. All of the cases were successfully treated and half of them required open surgery. The report confirms the difficulty of the treatment and reaffirms the necessity to bear in mind the wide variety of methods available for the treatment of this pathology. We stress the difficulties associated with managing the treatment and of suggesting new guidelines. The best option still remains not to delay the diagnostic and to select the appropriate initial treatment