Validation of three new measure-correlate-predict models for the long-term prospection of the wind resource

The estimation of the long-term wind resource at a prospective site based on a relatively short on-site measurement campaign is an indispensable task in the development of a commercial wind farm. The typical industry approach is based on the measure-correlate-predict �MCP� method where a relational model between the site wind velocity data and the data obtained from a suitable reference site is built from concurrent records. In a subsequent step, a long-term prediction for the prospective site is obtained from a combination of the relational model and the historic reference data. In the present paper, a systematic study is presented where three new MCP models, together with two published reference models �a simple linear regression and the variance ratio method�, have been evaluated based on concurrent synthetic wind speed time series for two sites, simulating the prospective and the reference site. The synthetic method has the advantage of generating time series with the desired statistical properties, including Weibull scale and shape factors, required to evaluate the five methods under all plausible conditions. In this work, first a systematic discussion of the statistical fundamentals behind MCP methods is provided and three new models, one based on a nonlinear regression and two �termed kernel methods� derived from the use of conditional probability density functions, are proposed. All models are evaluated by using five metrics under a wide range of values of the correlation coefficient, the Weibull scale, and the Weibull shape factor. Only one of all models, a kernel method based on bivariate Weibull probability functions, is capable of accurately predicting all performance metrics studied

Información arqueológica y etnográfica sobre el uso de yunques de huesos en el caso de Mallorca (Islas Baleares, España)

After most researchers have agreed to interpret the bone anvils as artefacts used by blacksmiths to cut teeth on metal sickles, present lines of enquiry are focused on drawing the geographic and chronological scope of these tools. Following this path, this paper presents the results of archaeological and ethnographic surveys carried out in Mallorca (Balearic Islands, Spain). The new data recorded not only has enabled us to document the presence and temporal scope of the bone anvils on the island, but also, for the first time, the involvement of women in their use.Una vez establecido que los yunques de hueso fueron objetos utilizados por los herreros para crear el dentado de las hoces de metal, la investigación actual se ha centrado en trazar el alcance geográfico y cronológico de estas herramientas. Siguiendo este camino, se presentan aquí los resultados arqueológicos y etnográficos de la investigación llevada a cabo en Mallorca (Islas Baleares, España). Los nuevos datos obtenidos no sólo nos permiten documentar la presencia y alcance temporal de los yunques de hueso en la isla, sino también, por primera vez, el papel desempeñado por las mujeres en su uso

Comprehensive Benchmarking and Integration of Tumour Microenvironment Cell Estimation Methods

Various computational approaches have been developed for estimating the relative abundance of different cell types in the tumour microenvironment (TME) using bulk tumour RNA data. However, a comprehensive comparison across diverse data sets that objectively evaluates the performance of these approaches has not been conducted. Here we benchmarked seven widely used tools and gene sets and introduce ConsensusTME, a method that integrates gene sets from all the other methods for relative TME cell estimation of 18 cell types. We collected a comprehensive benchmark dataset consisting of pan-cancer data (DNA-derived purity, leukocyte methylation, and H&E-derived lymphocyte counts) and cell-specific benchmark data sets (peripheral blood cells and tumour tissues). Although none of the methods outperformed others in every benchmark, ConsensusTME ranked top three in all cancer-related benchmarks and was the best performing tool overall. We provide a web resource to interactively explore the benchmark results and an objective evaluation to help researchers select the most robust and accurate method to further investigate the role of the TME in cancer (www.consensusTME.org).A. Jiménez-Sánchez was supported by a doctoral fellowship from the Cancer Research UK Cambridge Institute and the Mexican National Council of Science and Technology (CONACyT). O. Cast and M.L. Miller were supported by the Brown Performance Group, Innovation in Cancer Informatics Discovery Grant (BD523775). M.L. Miller was supported by Cancer Research UK core grant (C14303/A17197) and the Target Ovarian Cancer Translational Project Grant (Cambridge1320 MM18)

High performance reduced order modeling techniques based on optimal energy quadrature: application to geometrically non-linear multiscale inelastic material modeling

A High-Performance Reduced-Order Model (HPROM) technique, previously presented by the authors in the context of hierarchical multiscale models for non linear-materials undergoing infinitesimal strains, is generalized to deal with large deformation elasto-plastic problems. The proposed HPROM technique uses a Proper Orthogonal Decomposition procedure to build a reduced basis of the primary kinematical variable of the micro-scale problem, defined in terms of the micro-deformation gradient fluctuations. Then a Galerkin-projection, onto this reduced basis, is utilized to reduce the dimensionality of the micro-force balance equation, the stress homogenization equation and the effective macro-constitutive tangent tensor equation. Finally, a reduced goal-oriented quadrature rule is introduced to compute the non-affine terms of these equations. Main importance in this paper is given to the numerical assessment of the developed HPROM technique. The numerical experiments are performed on a micro-cell simulating a randomly distributed set of elastic inclusions embedded into an elasto-plastic matrix. This micro-structure is representative of a typical ductile metallic alloy. The HPROM technique applied to this type of problem displays high computational speed-ups, increasing with the complexity of the finite element model. From these results, we conclude that the proposed HPROM technique is an effective computational tool for modeling, with very large speed-ups and acceptable accuracy levels with respect to the high-fidelity case, the multiscale behavior of heterogeneous materials subjected to large deformations involving two well-separated scales of length.Peer ReviewedPostprint (author's final draft

Disputas territoriales y conflictos por la apropiación de la renta turística en San Martín de los Andes

En este trabajo analizamos tres casos conflictivos que tienen como protagonista central a las agrupaciones mapuche de San Martín de los Andes. Intentamos mostrar que, lejos de reducir las disputas a un lineal enfrentamiento de las comunidades indígenas con “los winkas”, los conflictos involucran a múltiples actores cuyo origen, modalidades de accionar e intereses, constelan un escenario complejo muy alejado de cualquier construcción polar. Su selección responde a la intención de mostrar la diversidad de prácticas y estrategias desplegadas por los actores.In this paper we analyze three conflicting cases that have as main protagonist the mapuche groupings of San Martín de los Andes. We try to show that, far from reducing disputes to a linear confrontation of the indigenous communities with "the winkas", disputes involve multiple actors whose origin, modes of action and interests, make up a complex scenario far removed from any polar construction. Its selection responds to the intention to show the diversity of practices and strategies deployed by the actors.Fil: Balazote Oliver, Alejandro Omar. Universidad Nacional de Luján; Argentina. Universidad de Buenos Aires; ArgentinaFil: Cherñavsky, Sasha Camila. No especifica;Fil: Stecher, Gabriel Andre. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue; Argentin

Visor 3D basado en Google Earth para visita virtual. Caso de estudio: La Puebla de Farnals

[ES] Este Proyecto Final de Carrera consiste en la creación de una aplicación Web de exploración virtual tridimensional con el propósito de dar a conocer mejor la zona, y permitir la consulta de los recursos turísticos y comerciales localizados en el ámbito del casco urbano de la Playa de la Puebla de Farnals (Valencia). Para ello se incorpora en la página Web una ventana que muestra un modelo tridimensional de la Tierra mediante la API de Google Earth y sobre el cual se han situado geográficamente modelos 30 de diversos edificios pertenecientes a la zona de estudio. Dichos modelos han sido creados a través de la aplicación Google SketchUp. Por otro lado, la página Web permite hacer una serie de consultas acerca de los comercios situados en la zona de estudio. Permite ver la situación de los mismos, los modelos de los edificios en los que están situados y una ventana de información que aporta datos adicionales sobre el comercio en cuestión. Por otro lado se han programado una serie de paseos virtuales automatizados que pueden ser elegidos mediante un menú y con los que es posible visitar diversas zonas del modelo. Para todo esto se dará una introducción a la realidad virtual y a los mundos digitales 30. Más adelante se presentaran las diferentes formas existentes para el modelado 30 y se entrara al detalle con la que se eligió para este proyecto, que fue Google SketchUp. A continuación se presenta la aplicación bajo la que van a mostrarse los modelos generados y su API correspondiente, que permite hacer esto mismo dentro de una página Web. 0espués se da una descripción y comentario del código generado para la misma. Por último se aportan una serie de ideas y líneas de trabajo que puedan abrir las puertas a nuevos proyectos así como mejorar y ampliar el conjunto de la aplicación aquí presentada.Fernández Oliver, A. (2010). Visor 3D basado en Google Earth para visita virtual. Caso de estudio: La Puebla de Farnals. http://hdl.handle.net/10251/111581Archivo delegad