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Item type:Publication, Technoaxia: Towards an ethics of invisible mediation in the digital ageThis article proposes Technoaxia as a new ethical framework for navigating the moral complexity of the digital age. Drawing on the Platonic myth of the Ring of Gyges as an allegory for the power of technological invisibility, and on the media–ecological tradition from Marshall McLuhan to Neil Postman, the article argues that existing ethical frameworks – virtue ethics, deontology and utilitarianism – are insufficient because they were not designed to address effects that are structural, unconscious and mediated. Technoaxia, understood as an ethics of the invisible mediation of technology, focuses precisely on this gap: the systematic study of how media and technologies reshape human values below the threshold of conscious awareness and the cultivation of reflexive agency in response. The article critically engages with the literature on AI ethics, identifies its limitations and applies the Technoaxia framework to the concrete case of generative AI in education, demonstrating how the framework differs from and advances beyond prior proposals. The article concludes with the foundational principles of Technoaxia and a call for interdisciplinary implementation across education, design and governance. © 2026 Intellect Ltd. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, State of EmergencyNayib Bukele’s presidency has transformed El Salvador into an electoral autocracy by systematically dismantling democratic institutions, subverting the constitution, and consolidating power under his New Ideas party. In response, grassroots collectives of victims’ families engage in quiet, poignant acts of defiance, preserving memory and demanding accountability within a highly restrictive civic space. © 2026 by The Regents of the University of California - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The Need for Ethics in Operations Research(Springer Science and Business Media LLC, 2026-08-25); ;Ablanedo-Rosas, Jose Humberto ;Guerrero-Campanur, Aaron; This paper presents a bibliometric and narrative literature review examining how ethics has been addressed within the Operations Research (OR) field. Through a Scopus-based search of 74 papers spanning 1980–2026, the study identifies publication patterns, influential authors, and thematic developments in ethics-related OR research. Findings reveal that explicit normative engagement remains relatively limited within core OR journals, yet ethical considerations increasingly emerge through sustainability, healthcare, and social decision-making applications. The analysis does not permit causal explanations of disciplinary culture, training traditions, or editorial practices; instead, it frames these questions for further systemic investigation. By situating empirical patterns within broader debates on methodological reflexivity and systemic intervention, this study contributes to ongoing discussions about integrating ethics more explicitly into OR theory and practice. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2026. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Evaluation of the roughness and UTS of 3D-printed nylon with standard and combined structures(Springer Science and Business Media LLC, 2026-08-24); ;Díaz-Aguilera, J. H.; ;Gaytan, L. M. HernandezMartinez-Castañon, G. A.This study evaluates the ultimate tensile strength (UTS) and surface roughness in 3D-printed Nylon PA66 for three standard infill patterns (starred, concentric, and linear) and two novel combined designs (starred-concentric and starred-linear). Extrusion temperature was considered as a secondary variable (260 °C, 270 °C, and 280 °C), while infill density was kept constant at 80% for all designs. The hybrid patterns increased UTS by up to 50% compared to the conventional ones, demonstrating superior mechanical performance. However, increased strength often coincides with higher roughness, particularly at elevated temperatures, revealing an inverse relationship under certain conditions. In addition, the failure mode varied with temperature; while low temperatures caused premature delamination between layers, a cohesive bond was achieved with the Star-Linear pattern at 280 °C. These findings underscore the importance of pattern design and thermal parameters in optimizing the mechanical and surface properties of printed parts. © The Author(s), under exclusive licence to The Materials Research Society 2026. - Some of the metrics are blocked by yourconsent settings
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Item type:Publication, Influence of ground motion duration on collapse risk: spectral shape-amplitude scaling joint effectsIn performance-based earthquake engineering, addressing collapse risk has been a main concern among researchers and engineers, and the influence of ground motion duration on collapse risk has been widely studied in the past years. Additionally, recent research has shown that spectral shape has a strong influence and that amplitude scaling using large scaling factors in the selected ground motions tends to introduce a bias on the estimation of inelastic displacement demands and in the probability of collapse. However, the combined influence on these parameters has not been previously assessed. In this study, nonlinear response history analyses have been conducted on a series of single degree of freedom systems (SDOF) with degrading bilinear hysteretic response. Ground motions were selected in order to represent a combined hazard of subduction and crustal events. Thus, databases of the NGA-West2, Chile’s Strong-Motion Database, and Japan’s Strong-Motion Seismograph Networks were used in this study. Following recommendations of previous studies, ground motion duration was quantified using the 5-75% significant duration (SD5-75) while the effect of spectral shape was considered by selecting records with the least mean squared error with respect to a target response spectrum computed using only unscaled ground motions. Results suggest that, while it is evident that inelastic displacement demands and the collapse probability tend to increase as SD5-75 increases, the combined use of long duration acceleration time histories and large scale factors exacerbates this effect in the case of short and intermediate period systems. Conversely, the use of large scale factors does not seem to increase structural demands in the case of long period systems. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Study of directionality in ground motions recorded on soft soilsDirectionality of ground motions refers to changes in ground motion intensity with changes in orientation. Previous studies have investigated the directionality of response spectral ordinates of ground motions recorded on rock or firm soils. However, there are no studies on the directionality of ground motions recorded on very soft soil deposits. The present study focuses on quantifying the directionality of horizontal components from strong motions recorded in stations located on the soft soils of Mexico City, and develops models for estimating the maximum horizontal component (RotD100), the recently proposed median of the maximum of two orthogonal components (MaxRotD50), and their corresponding variabilities as a function of periods of vibration normalized by the fundamental period of the site and the median spectral ordinate for all non-redundant orientations ordinate (RotD50). These models are developed after analyzing the results from 625 record pairs obtained during 26 major earthquake events in Mexico. These events have moment magnitudes between 6 and 8.2 and were recorded at stations with fundamental periods of vibration between 1 and 3s. Results demonstrate that horizontal components show larger directionality as the period of vibration increases, similar to what has been observed in stiff soils, but an additional increase in directionality in spectral ordinates is observed for periods of vibration equal to or close to the predominant period of the site. More specifically, it is observed that RotD100 and MaxRotD50 values are 25% and 18% larger than the RotD50 component, respectively, when the period of vibration coincides (i.e., is tuned) with the period of the site. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Competencias digitales del profesorado universitario del siglo XXI: un diagnóstico en el contexto mexicano(National Association of Universities and Higher Education Institutions, 2026); ; Cantero Ramírez MargaritaLa integración de tecnologías en la educación superior es un desafío, siendo necesario el desarrollo de competencias digitales docentes. Este artículo analiza el nivel de competencias digitales del profesorado de una universidad privada en México. Mediante un estudio cuantitativo correlacional con un instrumento basado en el marco DigCompEdu. Los resultados indican que los profesores se encuentran en nivel integrador donde a mayor empoderamiento y desarrollo de competencias digitales de los estudiantes se asocia con mayor competencia digital del docente. Concluyendo en la pertinencia de crear estrategias específicas para avanzar hacia el nivel pionero que contribuya a la educación de calidad. - Some of the metrics are blocked by yourconsent settings
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Item type:Publication, Notas metafísicas sobre el concepto de naturaleza en Santo Tomás de AquinoEl concepto de naturaleza se ha definido como primer principio de operaciones. Se trata de un principio al que se atribuyen las acciones y las manifestaciones de prácticamente todas las cosas. Sin embargo, podemos constatar que, a lo largo de la historia, su significado ha sido un tanto ambiguo. Esa es la razón por la que el objeto de este breve trabajo es presentar las notas metafísicas esenciales del concepto de naturaleza. Trascender el plano físico para adentrarnos en el plano metafísico, considerando como referencia la propuesta de Santo Tomás de Aquino, que considera a Dios como causa última de la operatividad y demuestra en qué sentido la naturaleza puede ser considerada como principio de movimiento.
