The Need for Unification and Harmonization in a Maritime Licensing Standard for Recreational Craft

The objective of this document is to make clear the importance of simplifying the transit of pleasure boats and their skippers safely in the European territory with the foreseeable improvement of the functioning of the internal market. In many European countries recreational skippers are required to have specific training and experience in order to demonstrate their maritime competence. These licenses for navigation allow a recreational vessel to be skippered in each national territory. One of the main objectives of these qualifications is to reduce the number of accidents in recreational boating. Generally speaking, in the European Union, as regards the requirements for the management of pleasure craft, both private and professional, the requirements are very different depending on the member state

Reseña/Review (Potter, Will, "Los verdes somos los nuevos rojos: una mirada desde el interior de un movimiento social acosado", Madrid: Plaza y Valdés Editores, ISBN: 9788415271925, 350 págs., 2013)

Reseña/Review (Potter, Will, "Los verdes somos los nuevos rojos: una mirada desde el interior de un movimiento social acosado", Madrid: Plaza y Valdés Editores, ISBN: 9788415271925, 350 págs., 2013

Cryptanalysis of the RSA-CEGD protocol

Recently, Nenadi\'c et al. (2004) proposed the RSA-CEGD protocol for certified delivery of e-goods. This is a relatively complex scheme based on verifiable and recoverable encrypted signatures (VRES) to guarantee properties such as strong fairness and non-repudiation, among others. In this paper, we demonstrate how this protocol cannot achieve fairness by presenting a severe attack and also pointing out some other weaknesses.Comment: 8 pages, 1 figur

Proteoglycans in articular cartilage and their contribution to chondral injury and repair mechanisms

Proteoglycans are vital components of the extracellular matrix in articular cartilage, providing biomechanical properties crucial for its proper functioning. They are key players in chondral diseases, specifically in the degradation of the extracellular matrix. Evaluating proteoglycan molecules can serve as a biomarker for joint degradation in osteoarthritis patients, as well as assessing the quality of repaired tissue following different treatment strategies for chondral injuries. Despite ongoing research, understanding osteoarthritis and cartilage repair remains unclear, making the identification of key molecules essential for early diagnosis and effective treatment. This review offers an overview of proteoglycans as primary molecules in articular cartilage. It describes the various types of proteoglycans present in both healthy and damaged cartilage, highlighting their roles. Additionally, the review emphasizes the importance of assessing proteoglycans to evaluate the quality of repaired articular tissue. It concludes by providing a visual and narrative description of aggrecan distribution and presence in healthy cartilage. Proteoglycans, such as aggrecan, biglycan, decorin, perlecan, and versican, significantly contribute to maintaining the health of articular cartilage and the cartilage repair process. Therefore, studying these proteoglycans is vital for early diagnosis, evaluating the quality of repaired cartilage, and assessing treatment effectiveness

Individual Differences in Dispositional Mindfulness Predict Attentional Networks and Vigilance Performance

Acknowledgements The authors wish to thank Tao Coll-Martín, Fernando G. Luna, and Miguel A. Vadillo for the kind and helpful input provided during the development of this research project.Funding Funding for open access charge: Universidad de Granada / CBUA. LC was supported by a doctoral fellowship from “la Caixa” Foundation (ID 100010434; fellowship code LCF/BQ/ DE18/11670002). AC was supported by CIBEROBN, an initiative of the ISCIII (ISC III CB06 03/0052) and Ministerio de Economía y Competitividad (Spain) under AMABLE-VR (RTI2018-097835-A-I00). JL was supported by a research projects grant from the Spanish Agencia Estatal de Investigación, Ministerio de Economía y Competitividad (PSI2017-84926-P; PID2020-114790 GB-I00). This paper is part of the doctoral dissertation of the first author under the supervision of the last author.Data Availability The data and R scripts used for analysis are provided at the Open Science Framework (https://osf.io/374rs/). The online version of the ANTI-Vea task is available for free use and in multiple languages at https://www. ugr. es/~neuro cog/ ANTI/.Supplementary Information The online version contains supplementary material available at https://doi.org/10.1007/s12671-022-01850-6.Pretrial Registration Open Science Framework, https://osf.io/gb6c7Objectives Research addressing the relationship between dispositional mindfulness and objective attention performance remains inconclusive, partly because previous studies used sample sizes possibly leading to underpowered designs. Here, we examined this relationship in a large sample using the ANTI-Vea: a novel cognitive-behavioral task that simultaneously assesses the classic attentional networks—phasic alertness, orienting, executive control—and both the executive and arousal components of vigilance. Methods Two hundred nineteen meditation-naïve participants completed the study. Correlational analyses using Kendall’s Tau were performed between FFMQ scores and ANTI-Vea outcomes. Additional subsidiary correlations were performed between the FFMQ and two self-report measures assessing subjective attentional control and mind-wandering. Benjamini- Hochberg was applied to control de type I error rate. Internal consistency reliability indices were estimated for all measures used to aid the interpretation of the correlational results. Results Higher non-reactivity predicted overall faster reaction times and higher accuracy in attentional networks trials. Higher non-reactivity, as well as higher FFMQ total score, predicted faster reaction time and fewer lapses in arousal vigilance trials, the latter also being negatively associated with describe scores. The magnitude of the correlations ranged from τb = .103 to τb = .119. We found no association between FFMQ scores and executive control or executive vigilance. Conclusions Our results indicate that dispositional mindfulness is linked to improved global attentional and arousal vigilance performance, being non-reactivity to inner experience the key facet driving the association. The absence of association to executive processes is discussed based on the high cognitive demands of the ANTI-Vea task.Universidad de Granada/CBUA“La Caixa” Foundation (ID 100010434; fellowship code LCF/BQ/ DE18/11670002)CIBEROBN, an initiative of the ISCIII (ISC III CB06 03/0052) and Ministerio de Economía y Competitividad (Spain) under AMABLE-VR (RTI2018-097835-A-I00)Spanish Agencia Estatal de Investigación, Ministerio de Economía y Competitividad (PSI2017-84926-P; PID2020-114790 GB-I00

Wireless Sensor Network Application for Environmental Impact Analysis and Control

Traditional Wireless Sensor Networks (WSNs) applications take advantage of the new low cost low power consuming integrated sensors that appear with the evolution of Micro Electromechanical Systems (MEMS). This kind of sensors is suitable for WSNs, due to the reduced size, their interfaces and their low power consumption. However, during the last years, WSNs have found new niches of application where such sensors are not usable, due to the nature of the parameter to be measured. In these scenarios, new approaches must be taken in order to satisfy the requirements. But new problems appear, like cost and size increase. In this paper, an application where parameters like gas concentration, conductivity or pH have to be measured in a coffee factory is presented. The drawbacks of such a solution are highlighted, and the solution in the field of the wireless sensor networks adopted is detailed

Uso de indicadores bibliométricos para el análisis de temas emergentes y su evolución: spin-offs como caso de estudio

[ES] Las spin-offs constituyen una de las áreas de investigación más atractivas, ya que están asociadas con fenómenos como el emprendimiento, la innovación y la transferencia del conocimiento. El presente estudio muestra que la selección y el uso de indicadores bibliométricos permite identificar y caracterizar el desarrollo y la difusión de temas de investigación emergentes como el analizado. Los principales aspectos observados en relación con el desarrollo de la investigación sobre las spin-offs son que se produce un auge en el número de publicaciones después de un largo período de latencia y la marcada naturaleza multidisciplinar del área. El presente enfoque ha analizado la evolución de las publicaciones científicas, los agentes científicos involucrados en las mismas considerando diferentes niveles analíticos, las prácticas cooperativas y las características estructurales de la red de coautorías. Asimismo, se ha analizado la bibliografía citada, la evolución de los indicadores bibliométricos clave, habiéndose efectuado un análisis cualitativo de validación de contenido por parte de un experto en el campo. Se ha determinado el carácter emergente del tema a través de varios indicadores, observando que existe una superposición entre las contribuciones de los autores seminales y el momento en que se convierten en investigadores de referencia en el campo. La antigüedad de la bibliografía citada constituye un destacado indicador para establecer la naturaleza emergente del tema y monitorizar su desarrollo.[EN] Spin-offs are one of the most attractive areas of research; associated with the phenomena of entrepreneurship, innovation, and knowledge transfer. The present study shows that the selection and use of appropriate bibliometric indicators are a highly valuable method for studying emerging topics and analyzing the development and diffusion of the topic under research, including its process of emergence and growth. The primary aspects observed in relation to the development of university spin-off research includes the boom in the number of publications on the topic after a long period of latency and the pronounced multidisciplinary nature of the research. Our approach encompasses the evolution of scientific publication activity in the area, the scientific agents involved with it, and the cooperative practices and structural characteristics of the co-authorship network at different analytical levels. Also, this research explores cited literature, the evolution of key bibliometric indicators, and adds a validating qualitative analysis of content by an expert in the field. Moreover, the emergence of the topic is shown to overlap between seminal authors¿ early research contributions to the topic and the time when they become investigators of reference in the field, with their work featured among the most highly cited documents. Last but not least, the age of the cited bibliography constitutes a prominent indicator for establishing the emerging nature of a topic as well as its stage of development.This work was supported by the Conselleria de Educacion, Investigacion, Cultura y Deporte, Generalitat Valenciana (BEST 2016/153).González-Alcaide, G.; Gorraiz, J.; Hervás Oliver, JL. (2018). On the use of bibliometric indicators for the analysis of emerging topics and their evolution: spin-offs as a case study. El profesional de la información. 27(3):35-52. https://doi.org/10.3145/epi.2018.may.04S355227

Computing a T-transitive lower approximation or opening of a proximity relation

Fuzzy Sets and Systems. IMPACT FACTOR: 1,181. Fuzzy Sets and Systems. IMPACT FACTOR: 1,181. Since transitivity is quite often violated even by decision makers that accept transitivity in their preferences as a condition for consistency, a standard approach to deal with intransitive preference elicitations is the search for a close enough transitive preference relation, assuming that such a violation is mainly due to decision maker estimation errors. In some way, the more number of elicitations, the more probable inconsistency is. This is mostly the case within a fuzzy framework, even when the number of alternatives or object to be classified is relatively small. In this paper we propose a fast method to compute a T-indistinguishability from a reflexive and symmetric fuzzy relation, being T any left-continuous t-norm. The computed approximation we propose will take O(n3) time complexity, where n is the number of elements under consideration, and is expected to produce a T-transitive opening. To the authors¿ knowledge, there are no other proposed algorithm that computes T-transitive lower approximations or openings while preserving the reflexivity and symmetry properties

Procedimiento de estimación de la presión de trabajo óptima en la cámara de mezclado de un escudo de presión de tierras. Implicación en los parámetros de diseño del escudo

La inestabilidad del frente de excavación constituye uno de los problemas más graves a considerar a la hora de diseñar y construir un túnel. La ejecución de túneles mediante escudos de presión equilibrada de tierras (EPB) permite solucionar, en gran medida, los problemas asociados a dicha inestabilidad. La eficacia y seguridad demostradas por los escudos EPB para el mantenimiento de una determinada presión en el frente de excavación, facilita la ejecución de túneles con una afección mínima al entorno y justifican el uso generalizado de la tecnología EPB en la construcción de túneles en condiciones difíciles, resultando indispensable la determinación precisa de la presión que hay que ejercer en el frente para asegurar su estabilidad. El trabajo objeto de esta Tesis Doctoral tiene como finalidad el desarrollo de un procedimiento de cálculo de la presión óptima que se debe establecer en la cámara de mezclado de un escudo EPB. A tal fin, se ha abordado el problema mediante tres líneas básicas de investigación: a) estudio en profundidad de los métodos de cálculo clásicos y aplicación de dichos métodos a varios casos reales; b) evaluación de la presión aplicada en el frente partiendo de los parámetros de funcionamiento de los escudos, registrados sobre el terreno y c) elaboración y desarrollo de nuevos modelos numéricos adaptados al problema real. Estos nuevos modelos han proporcionado datos muy cercanos a los reales y han permitido la elaboración de un método de trabajo para calcular la presión a establecer en el frente. Asimismo, el procedimiento propuesto, constituye una base sólida para el análisis de las implicaciones que la presión calculada tiene sobre los parámetros del diseño del escudo. ABSTRACT Tunnel face instability is one of the most crucial problems to be solved when a tunnel is being designed and constructed. Tunnel execution by Earth Pressure Balance (EPB) shields is a good solution of the problems associated to that instability. The performance of EPB shield for maintaining the required support pressure at the tunnel face makes possible the construction of tunnels with a minimum affection of the surroundings, and justifies the generalized use of EPB technology for the construction of tunnels under difficult conditions and complicated surroundings, the precise determination of the support pressure to be applied at the tunnel face being necessary. The aim of the work developed for this Ph Dissertation is to develop a method for the calculation of the optimal support pressure to be established in the mixing chamber of a EPB shield. Three main research approaches have been followed: a) a detailed in depth study of the classical calculation methods; b) evaluation of the pressure applied at the face, based on the working parameters of the EPB shields as registered in situ and c) elaboration and development of new numerical models adapted to the actual problem. These new models have provided data very close to the actual ones and constitute a solid basis for the analysis of the involvement the calculated pressure has in the shield design parameters