El alma de la modernidad: los artículos inéditos de José María Llanas Aguilaniedo

Este trabajo documenta una serie de artículos en prensa inéditos del escritor oscense José María Llanas Aguilaniedo (1875-1921) que vienen a completar los estudios bibliográficos realizados hasta ahora sobre dicho autor. Además de ampliar el corpus de sus publicaciones, el objetivo del artículo es el de integrar esos textos en la producción general de Llanas, trazando las relaciones con otros de su textos ya estudiados; así como dar cuenta de los mismos en el marco cultural del fin de siglo

Aplicación de la teoría de las opciones al reaseguro

Se tratan las modalidades de reaseguro, centrándonse en las no proporcionales, excess loss (XL) y stop loss, estudiando la variación de la distribución de la siniestralidad antes y después del reaseguro. También se trata de la aplicación de la teoría de opciones al contrato de reaseguro, para finalmente, mediante la aplicación de esta teoría obtener la prima de un contrato de reaseguro

Kernel bandwidth estimation for moving object detection in non-stabilized cameras

The evolution of the television market is led by 3DTV technology, and this tendency can accelerate during the next years according to expert forecasts. However, 3DTV delivery by broadcast networks is not currently developed enough, and acts as a bottleneck for the complete deployment of the technology. Thus, increasing interest is dedicated to ste-reo 3DTV formats compatible with current HDTV video equipment and infrastructure, as they may greatly encourage 3D acceptance. In this paper, different subsampling schemes for HDTV compatible transmission of both progressive and interlaced stereo 3DTV are studied and compared. The frequency characteristics and preserved frequency content of each scheme are analyzed, and a simple interpolation filter is specially designed. Finally, the advantages and disadvantages of the different schemes and filters are evaluated through quality testing on several progressive and interlaced video sequences

Robust multi-camera tracking from schematic descriptions

Although monocular 2D tracking has been largely studied in the literature, it suffers from some inherent problems, mainly when handling persistent occlusions, that limit its performance in practical situations. Tracking methods combining observations from multiple cameras seem to solve these problems. However, most multi-camera systems require detailed information from each view, making it impossible their use in real networks with low transmission rate. In this paper, we present a robust multi-camera 3D tracking method which works on schematic descriptions of the observations performed by each camera of the system, allowing thus its performance in real surveillance networks. It is based on unspecific 2D detection systems working independently in each camera, whose results are smartly combined by means of a Bayesian association method based on geometry and color, allowing the 3D tracking of the objects of the scene with a Particle Filter. The tests performed show the excellent performance of the system, even correcting possible failures of the 2D processing modules

Robust 3D multi-camera tracking from 2D mono-camera tracks by bayesian association

Visual tracking of people is essential automatic scene understanding and surveillance of areas of interest. Monocular 2D tracking has been largely studied, but it usually provides inadequate information for event nterpretation, and also proves insufficiently robust, due to view-point limitations (occlusions, etc.). In this paper, we present a light but automatic and robust 3D tracking method using multiple calibrated cameras. It is based on off-the-shelf 2D tracking systems running independently in each camera of the system, combined using Bayesian association of the monocular tracks. The proposed system shows excellent results even in challenging situations, proving itself able to automatically boost and recover from possible errors

Treatment of Human Brucellosis — Review of Evidence from Clinical Trials

Unresolved issues remain surrounding the treatment of human brucellosis. The present work aims to provide useful information to help clinicians make decisions when treating brucellosis patients. Information based on scientific evidence from clinical trials published over the past 30 years has been compiled and presented in an updated form, covering both focal and non-focal, or uncomplicated, human brucellosis. This chapter shows that, despite the studies published in recent years, areas such as the role of monotherapy or treatment in cases of focal disease, have not been adequately addressed in clinical trials, and demonstrates the need for further research

Capabilities and limitations of mono-camera pedestrian-based autocalibration

Many environments lack enough architectural information to allow an autocalibration based on features extracted from the scene structure. Nevertheless, the observation over time of walking people can generally be used to estimate the vertical vanishing point and the horizon line in the acquired image. However, this information is not enough to allow the calibration of a general camera without presuming excessive simplifications. This paper presents a study on the capabilities and limitations of the mono-camera calibration methods based solely on the knowledge of the vertical vanishing point and the horizon line in the image. The mathematical analysis sets the conditions to assure the feasibility of the mono-camera pedestrian-based autocalibration. In addition, examples of applications are presented and discusse

Simultaneous 3D object tracking and camera parameter estimation by Bayesian methods and transdimensional MCMC sampling

Multi-camera 3D tracking systems with overlapping cameras represent a powerful mean for scene analysis, as they potentially allow greater robustness than monocular systems and provide useful 3D information about object location and movement. However, their performance relies on accurately calibrated camera networks, which is not a realistic assumption in real surveillance environments. Here, we introduce a multi-camera system for tracking the 3D position of a varying number of objects and simultaneously refin-ing the calibration of the network of overlapping cameras. Therefore, we introduce a Bayesian framework that combines Particle Filtering for tracking with recursive Bayesian estimation methods by means of adapted transdimensional MCMC sampling. Addi-tionally, the system has been designed to work on simple motion detection masks, making it suitable for camera networks with low transmission capabilities. Tests show that our approach allows a successful performance even when starting from clearly inaccurate camera calibrations, which would ruin conventional approaches

Evolución del consumo de fármacos antipsicóticos en Castilla y León (1990-2001)

Producción CientíficaFundamento: A lo largo de la última década se han introducido nuevos fármacos y nuevos abordajes terapéuticos que permiten suponer cambios en la utilización de antipsicóticos en nuestro medio. El objetivo del presente estudio fue caracterizar el patrón de utilización de antipsicóticos en Castilla y León para el periodo 1990-2001 así como conocer la influencia que la introducción de los nuevos antipsicóticos ha podido tener en el patrón de consumo de estos fármacos. Métodos: Los datos de consumo de medicamentos se obtuvieron de la base de datos ECOM (Especialidades Consumo de Medicamentos) del Ministerio de Sanidad y Consumo. Esta base contiene información sobre el consumo de medicamentos dispensados con cargo al Sistema Nacional de Salud en farmacias comunitarias en todo el territorio nacional. Con el fin de estimar el consumo fuera del Sistema Nacional de Salud, se han utilizado datos de la empresa IMS (International Marketing Services) referidos a los años 2000 y 2001. Los datos se expresaron en Dosis Diarias Definidas por 1.000 habitantes y día. Resultados: El uso de antipsicóticos creció un 146 % desde 1990 al 2001. A lo largo del periodo estudiado, haloperidol ha sido el antipsicótico más utilizado en España y en Castilla y León. Los antipsicóticos atípicos representaron un 49% del consumo total en el año 2001 y un 90% de los costes; se observa una fuerte tendencia hacia un aumento de su consumo en detrimento de los antipsicóticos típicos. Se ha estimado que un 14% de los antipsicóticos utilizados en Castilla y León lo fue fuera del Sistema Nacional de Salud. Existen notables diferencias entre las distintas provincias. Conclusiones: El consumo de antipsicóticos en Castilla y León creció un 146% durante los 12 años estudiados. En este incremento, la oferta de nuevos antipsicóticos atípicos y las medidas legales relacionadas con la desinstitucionalización de los enfermos mentales han podido jugar un papel importante. La introducción en el mercado de los nuevos antipsicóticos ha modificado el patrón de uso de los mismos y ha ocasionado un incremento en los costes directos. El consumo sin cargo al Sistema Nacional de Salu