Mejoras del hábitat truchero del Río Noguera de Tort (La Vall de Boi, Lleida)

En el articulo se describe las obras realizadas en la cola del embalse de presa hidroelectrica de barrera para mejorar el habitat y obtener un aumento de población de la trucha común. Las obras fueron de dos tipos, una primera consistente en la introducción de grandes piedras para crear refugios a la trucha y la segunda consistió en la abertura de mangas y brazos del río para irrigar lagunas y mejorar las condiciones del agua

El criminal compliance frente a la responsabilidad administrativa de las personas jurídicas en la Ley N° 30424, 2023

La investigación tiene como problema primordial el siguiente, general ¿De qué manera el Criminal Compliance protege a la persona jurídica frente a su responsabilidad administrativa en la Ley 30424 en el Perú? Esto se debe a que la empresa no cuenta con un programa interno contra delitos o aplicación de la ley para hacer frente a los delitos en el entorno empresarial. El objetivo fue analizar de qué manera el Criminal Compliance protege a la persona jurídica frente a su responsabilidad administrativa en la Ley 30424 en el Perú, la metodología empleada responde al enfoque cualitativo. La muestra estuvo conformada por 5 expertos especialistas en criminal compliance. Una conclusión resaltante fue que La implementación del criminal compliance afecta la prevención del delito comercial es a través de un oficial de cumplimiento que detectará de manera efectiva posibles comportamientos anormales o ilegales, preparará informes de investigación, establecerá un proceso de quejas y hará que la toma de decisiones sea transparente dentro del marco legal

Psychographic Traits Identification based on political ideology: An author analysis study on spanish politicians tweets posted in 2020

In general, people are usually more reluctant to follow advice and directions from politicians who do not have their ideology. In extreme cases, people can be heavily biased in favour of a political party at the same time that they are in sharp disagreement with others, which may lead to irrational decision making and can put people’s lives at risk by ignoring certain recommendations from the authorities. Therefore, considering political ideology as a psychographic trait can improve political micro-targeting by helping public authorities and local governments to adopt better communication policies during crises. In this work, we explore the reliability of determining psychographic traits concerning political ideology. Our contribution is twofold. On the one hand, we release the PoliCorpus-2020, a dataset composed by Spanish politicians’ tweets posted in 2020. On the other hand, we conduct two authorship analysis tasks with the aforementioned dataset: an author profiling task to extract demographic and psychographic traits, and an authorship attribution task to determine the author of an anonymous text in the political domain. Both experiments are evaluated with several neural network architectures grounded on explainable linguistic features, statistical features, and state-of-the-art transformers. In addition, we test whether the neural network models can be transferred to detect the political ideology of citizens. Our results indicate that the linguistic features are good indicators for identifying finegrained political affiliation, they boost the performance of neural network models when combined with embedding-based features, and they preserve relevant information when the models are tested with ordinary citizens. Besides, we found that lexical and morphosyntactic features are more effective on author profiling, whereas stylometric features are more effective in authorship attribution.publishedVersio

A generalized smith predictor for unstable time-delay SISO systems

[EN] In this work, a generalization of the Smith Predictor (SP) is proposed to control linear time-invariant (LTI) time-delay single-input single-output (SISO) systems. Similarly to the SP, the combination of any stabilizing output-feedback controller for the delay-free system with the proposed predictor leads to a stabilizing controller for the delayed system. Furthermore, the tracking performance and the steady-state disturbance rejection capabilities of the equivalent delay-free loop are preserved. In order to place this contribution in context, some modifications of the SP are revisited and recast under the same structure. The features of the proposed scheme are illustrated through simulations, showing a comparison with respect to the corresponding delay-free loop, which is here considered to be the ideal scenario. In order to emphasize the feasibility of this approach, a successful experimental implementation in a laboratory platform is also reported.This work was partially supported by the projects PROMETEOII/2013/004, Conselleria d'Educacio, Generalitat Valenciana; TIN2014-56158-C4-4-P-AR, Ministerio de Economia y Competitividad; and the FPI-UPV 2014 PhD Grant, Universitat Politecnica de Valencia, Spain.Sanz Díaz, R.; García Gil, PJ.; Albertos Pérez, P. (2017). A generalized smith predictor for unstable time-delay SISO systems. ISA Transactions. 72:197-204. https://doi.org/10.1016/j.isatra.2017.09.020S1972047

Aspect-ratio and lateral-resolution enhancement in force microscopy by attaching nanoclusters generated by an ion cluster source at the end of a silicon tip

One of the factors that limit the spatial resolution in atomic force microscopy (AFM) is the physical size of the probe. This limitation is particularly severe when the imaged structures are comparable in size to the tip’s apex. The resolution in the AFM is usually enhanced by using sharp tips with high aspect ratios. In the present paper we propose an approach to modify AFM tips that consists of depositing nanoclusters on standard silicon tips. We show that the use of those tips leads to atomic force microscopy images of higher aspect ratios and spatial resolution. The present approach has two major properties. It provides higher aspect-ratio images of nanoscale objects and, at the same time, enables to functionalize the AFM tips by depositing nanoparticles with well-controlled chemical composition.The authors acknowledge the Spanish Ministerio de Ciencia e Innovación and Comisión Interministerial para la Ciencia Y la Tecnología—CICYT under Contract Nos. MAT2008-06765-C02-02, MAT2009-08650, and CSD2007 00041 (Nanoselect) and through the FPI and “Juan de La Cierva” programs for financial support.Peer reviewe

Modification of AFM tips by depositing nanoparticles with an Ion Cluster Source. Enhancement of the aspect-ratio and lateral resolution

Póster presentado en la NanoSpain Conference (Nanoiberian Conference), celebrada en Bilbao del 11 al 14 de abril de 2011.One of the factors that limit the spatial resolution in atomic force microscopy (AFM) is the physical size of the probe. This limitation is particularly severe when the imaged structures are comparable in size to the tip¿s apex. The resolution in the AFM is usually enhanced by using sharp tips with high aspect ratios. In the present paper we propose an approach to modify AFM tips that consists of depositing nanoclusters on standard silicon tips. We show that the use of those tips leads to atomic force microscopy images of higher aspect ratios and spatial resolution. The present approach has two major properties. It provides higher aspect-ratio images of nanoscale objects and, at the same time, enables to functionalize the AFM tips by depositing nanoparticles with well-controlled chemical composition.Peer Reviewe

Un acercamiento a los derechos en serio: sobre el modelo de reglas uno de ronald dworkin

En el modelo de reglas uno Dworkin se dedica a dos asuntos principales: atacar la teoría del positivismo jurídico, concretamente la teoría del derecho de H.L.A Hart, y a fundamentar el carácter normativo de los principios jurídicos. O más específicamente a atacar los dogmas centrales del positivismo jurídico evidenciando su silencio o equivocación frente a normas como los principios de derecho

Vertical comprehensive approach in learning volleyball: a practical example in high school

La función de las unidades didácticas es concretar los contenidos que aparecen en la programación docente en su máximo nivel de concreción respecto a qué, cómo y cuándo enseñar y evaluar, exponiendo de manera reflexiva las actividades y el empleo de recursos.The role of teaching units is to specify the contents displayed in the teaching program at its highest level of specificity about what, howand when to teach and evaluate thoughtfully exposing the activitiesand use of resources

Enhanced extended state observer-based control for systems with mismatched uncertainties and disturbances

[EN] This paper presents an enhanced Extended State Observer (ESO)-based control strategy to deal with the disturbance attenuation problem for a class of non integral-chain systems subject to non-linear mismatched uncertainties and external disturbances. The proposed control strategy does not assume the integral-chain form and it is formed by a state-feedback plus a dynamic disturbance compensation term, which is designed to reject the disturbance effect in the system output. From a theoretical point of view, the proposed strategy is reduced to the conventional ESO when the integral chain form and the matched condition hold. In this sense, this paper is presented as an extension of the ESO principles to cover a wider class of systems. The theoretical results show that the internal zero-dynamics plays an important role in ESO-based control design. Also, the closed-loop stability is analyzed and some numerical simulations show the effectiveness of the proposal in comparison with previous ESO-based techniques.This work was partially supported by projects FPU15/02008, FPI-UPV 2014 and TIN2014-56158-C4-4-P-AR, Ministerio de Economia y Competitividad, Spain.Castillo-Frasquet, A.; García Gil, PJ.; Sanz Díaz, R.; Albertos Pérez, P. (2017). Enhanced extended state observer-based control for systems with mismatched uncertainties and disturbances. ISA Transactions. 73:1-10. https://doi.org/10.1016/j.isatra.2017.12.005S1107

Competencia táctica y técnica de alumnos de segundo curso de Educación Primaria. Preparados para aprender deporte

The purpose of the study was threefold: (a) to implement a game context approach to assess the game performance components and, in doing so, (b) to know if second graders have the appropriate development to learn games, and (c) to design a suitable learning progressions within tactical teaching approaches. Game performance was assessed in second graders (n=16; age 7-8 years) with special attention to decision making component. Participants achieved a high level of tactical awareness in attacking the goal contexts and low performance in response execution. Findings suggested that second grade students are ready to learn games as long as a tactical approach as Teaching Games for Understanding was used.El objetivo de nuestro estudio fue triple: (a) analizar los conocimientos previos de alumnos de segundo de Educación Primaria sobre deportes de invasión, y a partir de esto, (b) deducir si los alumnos de estas edades están preparados para aprender deportes de invasión y, en caso positivo, (c) desarrollar una propuesta de progresión adecuada a su nivel de desarrollo. Para ello se evaluó y analizó el rendimiento de juego de alumnos de segundo de Educación Primaria (n=16; edad: 7-8 años), prestando especial atención al componente de toma de decisión. Destacó el alto nivel de conciencia táctica en contextos de logro del objetivo y el bajo rendimiento en el componente de ejecución motriz. Los datos apoyan la hipótesis de la posibilidad de una iniciación deportiva a partir de los 7 años con el enfoque adecuado, tal y como es la Enseñanza Comprensiva del Deporte