Habitada palabra: Claudia Trujillo

Cuando se comienza a estar en la vida, no necesitamos sino tenernos a nosotros mismos. Nada nos lleva a relacionarnos con nadie ni con nada. Vivimos en la condición de quién es nuevo en esa vida, de quién la inicia y que no siente necesidad, al decir de sí mismo, de ese su decirse a sí mismo. Y lo que sabe lo sabe, sin duda, para sí mismo. Y lo que no sabe, no le interesa saberlo. En esa su vida no debe causar inquietud el no saber nada. Es la nada en su intensidad más derribadora. Es lo real que se hace en uno mismo. Cada momento de ello, del comienzo de la vida, es como quién está desnudo y lo sabe. Y siente que está desnudo. No tiene sentido no estarlo y no hace nada por no estarlo. No quiere hacerlo. Nadie le dice, todavía, en ese todavía maravilloso, que tiene que hacerlo. Desnudo se mueve entonces en el comienzo. Aquí no es necesario decir nada a nadie, sino con uno mismo. Esa es la incendiaria inclinación por vivir. Es instalarse como en una maravillosa nada del decir. Decir de la nada. Óscar Jairo González Hernández Profesor Facultad de Comunicación Universidad de Medellín, presenta la obra Habitada Palabra de la poeta Claudia Trujillo, libro editado por la Universidad de Antioquia

Clément Rosset: entre el más acá y el más allá de su muerte

El pensamiento de Clément Ros­set (1939-2018), se nos muestra siempre y en todo momento, como un pensamiento construido y formado desde la perspectiva de la necesidad interior, de la actividad exterior y de la resolución en el deslumbramiento del descubrimiento de lo que buscaba conocer, en la que se mantiene constantemente arrebatado y dominado por la cer­teza y la incertidumbre del pensar. ; Profesor Facultad de Comunicación. Co­municación y Lenguajes Audiovisuales. Uni­versidad de Medellín

Experimental and modelling study of artificial radionuclides (239Pu, 241Am and 99Tc) uptake by suspended matter in environmental waters located in the south of Spain

The interest on transfer coefficients studies have increased recently, since they are important parameters required understanding and reliably modelling the dispersion of conservative and non-conservative radionuclides in aquatic environments. The approaches, based in the implementation of the uptake kinetics of dissolved radionuclides by solid particles, are more appropriate than those based in the use of the distribution coefficients, k^. In this work, we present a series of tracing experiments to study the uptake of Pu, Am and Tc in natural aqueous suspensions from three aquatic systems (Gergal reservoir, Guadalquivir river, and the estuary of Tinto river) located in the South of Spain. The kinetic transfer coefficient for direct sorption depends on the total available surface of particles and on the concentration of active sites in the surface layer (what depends on the mineral composition, free edges, pores, coatings, etc.). In order to compare results from different environments and to fix the conditions of applicability of the derived coefficients, it is necessary to handle the particle size spectra and the mineral composition of natural occurring suspended loads. The time dependent uptake curves, covering up to a large period, are fitted to the numerical solutions calculated with different models of the uptake kinetics.ENRES

The Vision of the Main Mobile Apps Related to Caravanning: an Analysis of the Reviews Focusing on Users and Developers

Mobile applications (apps) are becoming an essential tool when it comes to sightseeing. There is even a specific category for trips in the leading app stores. These are no strangers to the rise of the itinerant travel style, the caravans. The study aims to understand the situation of the main caravanning apps in Spain. We have carried out a web scraping methodology using a sample of 1,601 Spanish reviews of the main apps related to caravanning. The most interesting findings, among others, are that we are getting to know a sector that up to now was unknown and that even has not been affected by the pandemic crisis. Besides, the paper has demonstrated that developers do not follow the right strategies in caravanning apps. The paper also shows users' most crucial concerns about these apps. Therefore, managers of caravanning apps could improve their strategies by focusing their attention on users' concerns and, most important, reviews to respondThis publication has been possible thanks to the support of Spain's Ministry of Universities which has granted David Perea with a Margarita Salas grant for the training of young PhD included in the grants for the requalification of the Spanish University System 2021-2023, financed by the European Union Next Generation E

Weak foliated rock slope stability analysis with ultra-close-range terrestrial digital photogrammetry

Este artículo ha sido financiado por el Grupo de Investigaciones Medioambientales: Riesgos Geológicos e Ingeniería del Terreno (RNM121) de la Junta de Andalucía y por proyecto de investigación "Desarrollo de técnicas para la regionalización de la peligrosidad de movimientos de ladera en la cuenca del río Genil y la cuenca Sur (Adra-Nerja) de la Cordillera Bética" (Ministerio de Educación y Ciencia del Gobierno de España).This paper presents a review of the data acquisition procedures of geotechnical parameters for rock slope stability assessment and the proposal of some new improvements. For this purpose, a piece of research based on the slope mass rating classification system using closerange terrestrial digital photogrammetry (CR-TDP) has led to improvements in quality and timing of discontinuity data acquisition, and analyzes the suitability of each one of the parameters when applied to weak foliated rocks. TDP allows rapid 3D image acquisition of a rock slope, which can be analyzed using software to determine the geometrical parameters that affect stability. A fast procedure to perform the photogrammetric, non-contact survey in order to obtain the 3D images is shown in this paper. Being a rapid and single-person task, this procedure provides enough precision to be applied to weak foliated rock slopes with non-well-defined geometry. Furthermore, the study has focused on highly foliated rock outcrops, in which high resolution in the 3D images is very desirable. This research was applied to mountain road cuts, in which the use of TDP with a very close range was necessary. Through an application on weak rocks in the Alpujarras (Andalusia, Spain), this work analyzes the bias when applying TDP to materials such as these, under progressive weathering processes.Junta de Andalucía (RNM121)Ministerio de Educación y Ciencia del Gobierno de Españ

Algunos aspectos importantes para tener en cuenta hoy, en la enseñanza del derecho

El presente escrito como ponencia, involucra parte del proyecto de investigación denominado “Análisis sobre la aplicación y desarrollo del actual Marco Jurídico para la Paz, consagrado en el Acto Legislativo 01 de 2012 y demás normas concordantes y aplicables en Colombia”, pero también hace relación a otros asuntos de interés que tienen que ver con el tema propuesto en el Congreso que nos ocupa, referentes a asuntos concretos con la enseñanza del derecho, partiendo con un poco de reflexión histórica sobre la disciplina del derecho, pasando por los importantes cambios en los métodos de enseñanza, los anteriores y los actuales docentes, las herramientas de antaño comparadas con las nuevas posibilidades tecnológicas, científicas y del actual desarrollo, llegando a la propuesta de situaciones concretas que deben incorporarse en los programas de derecho de las escuelas y facultades respectivas y culminando con algunos aspectos generales de la educación superior, principalmente en nuestra sociedad latinoamericana, y cerrando con unas sencillas conclusiones y las pertinentes referencias bibliográficas.The present written as a paper, involves part of the research project called "Analysis on the application and development of the current Legal Framework for Peace, enshrined in the Legislative Act 01 of 2012 and other concordant and applicable rules in Colombia", but also relates to other matters of interest that have to do with the topic proposed in the Congress that concerns us, referring to specific issues with the teaching of law, starting with a bit of historical reflection on the discipline of law, going through the important changes in the teaching methods, the previous and current teachers, the tools of yesteryear compared to the new technological, scientific and current development possibilities, arriving at the proposal of concrete situations that should be incorporated into the law programs of the respective schools and faculties and culminating with some general aspects of higher education, principalmente in our Latin American society, and closing with some simple conclusions and the pertinent bibliographical references.Facultad de Ciencias Jurídicas y Sociale

Directed Irradiation Synthesis as an Advanced Plasma Technology for Surface Modification to Activate Porous and “as-received” Titanium Surfaces

For the design of smart titanium implants, it is essential to balance the surface properties without any detrimental effect on the bulk properties of the material. Therefore, in this study, an irradiation-driven surface modification called directed irradiation synthesis (DIS) has been developed to nanopattern porousand“as-received”c.p. Tisur faces with the aim of improving cellular viability. Nano features were developed using singly-charged argon ions at 0.5 and 1.0 keV energies, incident angles from 0◦ to 75◦ degrees, and fluences up to 5.0×1017 cm−2. Irradiated surfaces were evaluated by scanning electron microscopy, atomic force microscopy and contact angle, observing an increased hydrophilicity (a contact angle reduction of 73.4% and 49.3%) and a higher roughness on both surfaces except for higher incident angles, which showed the smoothest surface. In-vitro studies demonstrated the biocompatibility of directed irradiation synthesis (DIS) reaching 84% and 87% cell viability levels at 1 and 7 days respectively, and a lower percentage of damaged DNA in tail compared to the control c.p. Ti. All these results confirm the potential of the DIS technique to modify complex surfaces at the nanoscale level promoting their biological performance.Department of Defense (Spain) contract W81XWH-11-2-0067Ministry of Economy and Competitiveness of Spain grant MAT2015-71284-

ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment

Virtual co-embodiment enables two users to share a single avatar in Virtual Reality (VR). During such experiences, the illusion of shared motion control can break during joint-action activities, highlighting the need for position-aware feedback mechanisms. Drawing on the perceptual crossing paradigm, we explore how haptics can enable non-verbal coordination between co-embodied participants. In a within-subjects study (20 participant pairs), we examined the effects of vibrotactile haptic feedback (None, Present) and avatar control distribution (25-75%, 50-50%, 75-25%) across two VR reaching tasks (Targeted, Free-choice) on participants Sense of Agency (SoA), co-presence, body ownership, and motion synchrony. We found (a) lower SoA in the free-choice with haptics than without, (b) higher SoA during the shared targeted task, (c) co-presence and body ownership were significantly higher in the free-choice task, (d) players hand motions synchronized more in the targeted task. We provide cautionary considerations when including haptic feedback mechanisms for avatar co-embodiment experiences.Comment: Accepted to CHI 202

OptEEmAL: Decision-Support Tool for the Design of Energy Retrofitting Projects at District Level

Designing energy retrofitting actions poses an elevated number of problems, as the definition of the baseline, selection of indicators to measure performance, modelling, setting objectives, etc. This is time-consuming and it can result in a number of inaccuracies, leading to inadequate decisions. While these problems are present at building level, they are multiplied at district level, where there are complex interactions to analyse, simulate and improve. OptEEmAL proposes a solution as a decision-support tool for the design of energy retrofitting projects at district level. Based on specific input data (IFC(s), CityGML, etc.), the platform will automatically simulate the baseline scenario and launch an optimisation process where a series of Energy Conservation Measures (ECMs) will be applied to this scenario. Its performance will be evaluated through a holistic set of indicators to obtain the best combination of ECMs that complies with user's objectives. A great reduction in time and higher accuracy in the models are experienced, since they are automatically created and checked. A subjective problem is transformed into a mathematical problem; it simplifies it and ensures a more robust decision-making. This paper will present a case where the platform has been tested.This research work has been partially funded by the European Commission though the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement No 680676. All related information to the project is available at https://www.opteemal-project.eu