Fishing Technology and Optimal Distribution of Harvest Rates

In this paper we analyze the optimal management of a joint ownership fishery exploitation model where agents use different fishing gears. As opposed to other works, we consider a model in which the fishing technology affects resource's growth not only through the harvest function, but also through the natural growth rate of the resource. The main objective is to capture the evidence that some fishing gears alter the habitat of the resource, and may alter the natural growth rate of the resource. The main result we obtain is that, when the natural growth of the resource is altered by the fishing technology, the optimal stock is not independent of how harvest quotas are distributed among the agents. Thus, in this context, a fishing policy that determines, first, the optimum stock and, secondly, decides on how to distribute the harvest among the different agents will not be efficient.fisheries regulation, fishing gear's selectivity, sharing of quotas

Developing of the smart textile for energy expenditure monitoring

Peer ReviewedPostprint (published version

La biblioteca de La Tercera Fundación

Conferencias y Comunicaciones del primer Congreso Internacional de literatura fantástica y ciencia ficción, celebrado del 6 al 9 de mayo de 2008 en la Universidad Carlos III de Madri

Determinació de la vida útil de bolets comestibles amb proves accelerades i anàlisi multivariant

Treballs Finals de Grau de Química, Facultat de Química, Universitat de Barcelona, Any: 2023,Tutors: Anna de Juan Capdevila, Stefan Yordanov PlatikanovThis project deals with the determination of the shelf-life of Agaricus bisporus, one of the most widely consumed mushrooms in the world. By storing these mushrooms at 5, 15 and 25 ºC, the effects of temperature were studied with 4 parameters: weight loss rate, ATR-FTIR spectrum PCA scores, green color change PCA scores and dark to white pixel ratio. These variables were measured over the span of 15 days to apply Accelerated Shelf-Life Testing (ASLT) and Multivariate Accelerated Shelf-Life Testing (MASLT) methodologies in order to estimate the kinetic parameters of the degradation reactions. ASLT yielded a shelf life of 10.88-12.09 days at 5 ºC, 4.13-8.53 days at 15 ºC and 4.51-4.52 days at 25 ºC and a global energy of activation of 30.6-34.6 kJ/mol. Univariate results were inconclusive and could not be calculated for the image related parameters, as they do not follow a discernible kinetic pattern. MASLT yielded a shelf life of 12.6 days at 5 ºC, 4.1 days at 15 ºC and 3.4 days at 25 ºC, with an energy of activation of 56.7 kJ/mol. This method based on PCA did allow the images’ information to be used, thus proved a more effective tool to transform parameters with non-linear kinetic pattern into useful usable information. Further research is needed, but it is a promising line of investigation that can be applied to other substance

Reflections of Le Corbusier on the work of Álvaro Siza

This research article navigates through the different common lines seen between the life and work of two of the most relevant architects of the 20th century: Le Corbusier and Álvaro Siza. Though belonging to different times, they both constitute indisputable examples of the architecture of their times, where several aspects in common appear, inviting us to think about the unconscious influence of the Swiss master on the work of the Portuguese architect over the years.Este artigo de pesquisa propõe um percurso através das diversas linhas comuns encontradas na vida e obra de dois dos arquitetos mais relevantes do século XX: Le Corbusier e Álvaro Siza. Embora tenham vivido em épocas diferentes, ambos são referentes indiscutíveis da arquitetura de seu tempo. Entre eles podem-se contatar inúmeros pontos em comum, os quais nos convidam a suspeitar de uma influência inconsciente do professor suíço no arquiteto português ao longo dos anos.El presente artículo de investigación plantea un recorrido por las diferentes líneas comunes advertidas entre la vida y la obra de dos de los arquitectos más relevantes del siglo XX: Le Corbusier y Álvaro Siza. Aunque pertenecientes a diferentes épocas, ambos constituyen indiscutidos referentes de la arquitectura de su tiempo en los que asoman numerosos aspectos en común que invitan a pensar en una influencia inconsciente del maestro suizo sobre el trabajo que el portugués desarrolló a lo largo de los años

Planning hand-arm grasping motions with human-like appearance

© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other worksFinalista de l’IROS Best Application Paper Award a la 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems, ICROS.This paper addresses the problem of obtaining human-like motions on hand-arm robotic systems performing pick-and-place actions. The focus is set on the coordinated movements of the robotic arm and the anthropomorphic mechanical hand, with which the arm is equipped. For this, human movements performing different grasps are captured and mapped to the robot in order to compute the human hand synergies. These synergies are used to reduce the complexity of the planning phase by reducing the dimension of the search space. In addition, the paper proposes a sampling-based planner, which guides the motion planning ollowing the synergies. The introduced approach is tested in an application example and thoroughly compared with other state-of-the-art planning algorithms, obtaining better results.Peer ReviewedAward-winningPostprint (author's final draft

Conditional t-SNE: Complementary t-SNE embeddings through factoring out prior information

Dimensionality reduction and manifold learning methods such as t-Distributed Stochastic Neighbor Embedding (t-SNE) are routinely used to map high-dimensional data into a 2-dimensional space to visualize and explore the data. However, two dimensions are typically insufficient to capture all structure in the data, the salient structure is often already known, and it is not obvious how to extract the remaining information in a similarly effective manner. To fill this gap, we introduce \emph{conditional t-SNE} (ct-SNE), a generalization of t-SNE that discounts prior information from the embedding in the form of labels. To achieve this, we propose a conditioned version of the t-SNE objective, obtaining a single, integrated, and elegant method. ct-SNE has one extra parameter over t-SNE; we investigate its effects and show how to efficiently optimize the objective. Factoring out prior knowledge allows complementary structure to be captured in the embedding, providing new insights. Qualitative and quantitative empirical results on synthetic and (large) real data show ct-SNE is effective and achieves its goal

Evaluation of a Fall Alerting System based on a Convolutional Deep Neural Network

Artículo sobre detección de caídas con redes neuronales profundasOwing to the effects of falls on quality of life of the elderly, automatic fall detection systems (FDS) have become a key research topic in the ambit of telecare. This works assesses the performance of convolutional neural networks when they are applied to identify fall accidents in a wearable FDS provided with a tri-axial accelerometer. The evaluation of the detection algorithm is carried out by employing a benchmarking repository with a wide set of traces captured from a wide group of volunteers that executed a programmed series of Activities of the Daily Living (ADLs) and emulated falls. Results show that the CNN can properly distinguish both types of movements with a success rate (specificity and sensitivity) around 99%.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

ELEMENTOS VISIBLES PARA CREAR UNA NUEVA SOCIEDAD DESDE LA REGIÓN

La crisis social que vive hoy la humanidad exige a los científicos sociales repensar formas de reorganización social que sean una alternativa al sistema capitalista que hoy muestra un agotamiento que está llevando a la humanidad a un callejón sin salida. En este sentido se tiene que revalorar los logros que sociales que se tuvieron en el socialismo y que deben ser la pauta para el replanteamiento de un sistema social que solucione y mitigue la crisis social como efecto directo de la globalización. Pero es la crisis ecológica la que realmente es ya la alerta máxima que empuja con desesperación a plantear un nuevo camino que en el caso de la América Latina ya se está construyendo por sectores sociales marginados de la visión globalizadora. Es así como este trabajo agrega más elementos para el planteamiento del Nuevo Proyecto Histórico que ya tiene elementos económicos importantes e ideas que contribuyen al cambio sistémico