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Feasibility of REBOA (Resuscitative Endovascular Balloon Occlusion of the Aorta) implementation in HEMS (Helicopter Emergency Medical Service) units in Castilla-La Mancha, Spain
Full text link16 p.El estudio evalúa la viabilidad de implementar la técnica REBOA (Resuscitative Endovascular Balloon Occlusion of the Aorta) en unidades HEMS en Castilla-La Mancha. Se analiza su potencial uso en pacientes atendidos por servicios de emergencia aeromédicos, considerando aspectos clínicos, logísticos y de implementación en el entorno prehospitalario.Introduction: Currently, REBOA (Resuscitative Endovascular Balloon Occlusion of the Aorta) is an emerging technique for resuscitation in patients presenting severe pathology in hemodynamic shock refractory to conventional treatments. The REBOA technique consists of inserting a balloon through the femoral artery to temporarily occlude the aorta and thus control massive bleeding and improve perfusion of vital organs in critical situations such as hemorrhagic shock. Although it is not a definitive technique, its use buys time before the implementation of a definitive treatment when possible. This makes REBOA an ideal technique for the philosophy of out-of-hospital emergency services and more particularly in the HEMS (Helicopter Emergency Medical Service) environment. On the other hand, REBOA has been postulated as one of the basic pillars in the resuscitation of severe trauma patients with hemorrhagic shock and of the doctrine of damage-control resuscitation in non-compressible torso and lower limb hemorrhage. Objective: To evaluate the potential feasibility of REBOA implementation in patients attended by HEMS teams in Castilla-La Mancha, Spain. Method: A retrospective observational study was conducted analyzing medical and nursing reports from HEMS units between 1 January and 31 December 2023. A statistical study of the variables collected was carried out using statistical techniques appropriate to the pre-specified study variables. A descriptive analysis of the population was performed. Frequency results are expressed in absolute terms, as percentages and confidence intervals. Continuous variables are expressed as mean (SD) and median (range) according to normality test (Kolmogorov–Smirnov test). For the study of the relationship between the different variables, Chi-square or Analysis of Variance is used if they are parametric. Descriptive and inferential statistics were performed using SPSS v24. Results: A total of 103 patients (72.81% men, mean age 57.7 years) were identified as potential REBOA candidates. On arrival of the emergency services the mean SI (shock index) of the patients was 1.36 (SD +/− 0.380). On arrival at the hospital, the mean SI was 1.25 (SD +/− 0.601). Of the series, 57 (55.33%) patients suffered cardiorespiratory arrest (CRA) at some point during pre-hospital care. Of the total number of patients, 38 were patients presenting severe trauma criteria (characterized by life-threatening injuries, with RTS score ≤ 11, shock index > 0.9, or ISS ≥ 16, indicating severe physiological or anatomical alterations), of which 26 (68.4%) did not go into CRA, while 12 (31.6%) did. Of the total number of patients, 65 (63.1%) did not meet severe trauma criteria, but did present medical criteria for REBOA placement, of which 55 (53.4%) were patients who at some point during attendance presented CRA. Although the shock index showed a slight decrease after healthcare without statistical significance or relevant correlation, a highly significant association was observed between severe trauma and cardiorespiratory arrest (p < 0.001). Conclusions: It could be affirmed that it may have been feasible to implement REBOA in 4.47% (103) of the patients attended by the HEMS healthcare team of Castilla-La Mancha. This could help to reduce the morbimortality and mortality of critical patients in medical helicopters. More studies are needed to corroborate this assertion
Algunas reflexiones en torno a la regulación de violencia en el trabajo del artículo 2 del Código del Trabajo
Full text link7 p.La ratificación del Convenio 190 por parte del Estado de Chile no solo es reflejo de la necesidad imperante de velar por condiciones laborales dignas para los trabajadores y trabajadoras, sino que también es evidencia de la urgencia de la aplicación y obligatoriedad de medidas necesarias que permitan enfrentar de algún modo una serie de situaciones complejas y problemáticas propias de las relaciones humanas en el contexto del trabajo. El compromiso adquirido derivado del cuerpo normativo recién señalado por nuestro país requería que el sistema pudiera contemplar herramientas legales disponibles para prevenir y evitar en la medida de lo posible el acaecimiento de conductas que dañan la dignidad de las personas que deben enfrentar la ocurrencia de eventuales conductas gravosas que perjudican una multiplicidad de derechos inherentes a las personas. Aquellas conductas o acciones a las que se hace referencia son al acoso laboral, sexual y la denominada violencia en el trabajo
Sequential classification of system health state using LSTM and health indicator
Full text linkCátedra ENIA IA3. Documento de trabajoIn the context of predictive maintenance, a fundamental question in predictive maintenance aims to determine whether the system is functioning correctly. To address this, the present work proposes a multiclass health-state classification strategy for the functional state of turbofan engines based on the temporal evolution of a health indicator (HI), computed from multivariate sensor data. The HI is derived for each operating trajectory of the system using statistical transformations of sensor readings. Its temporal progression is analysed using a sliding window approach. These recent HI sequences are used as input to a Long Short-Term Memory (LSTM) network trained to distinguish between multiple degradation states ranging from healthy to severe, enabling functional versus non-functional interpretation. This approach enables the detection of gradual degradation patterns with greater sensitivity than methods relying on single-point HI values. The method is validated using the NASA C-MAPSS dataset, and results support its applicability for continuous monitoring and intelligent maintenance of complex systems
Los derechos humanos como elementos de interacción en el derecho internacional público [Reseña de libro]
No full textReseña del libro: Elena Crespo Navarro, Andrés González Serrano (Dirs.), y Laura Aragonés Molina (Coord.), Los derechos humanos como elementos de interacción en el derecho internacional público. Madrid: Marcial Pons, 2024, 164 pp. ISBN: 9788413817583
Assessing the viability of unsupervised learning with autoencoders for predictive maintenance in helicopter engines
Full text linkCátedra ENIA IA3. Documento de trabajoUnplanned engine failures in helicopters can lead to severe operational disruptions, safety hazards, and costly repairs. To mitigate these risks, this study compares two predictive maintenance strategies for helicopter engines: a supervised classification pipeline and an unsupervised anomaly detection approach based on autoencoders (AEs). The supervised method relies on labelled examples of both normal and faulty behaviour, while the unsupervised approach learns a model of normal operation using only healthy engine data, flagging deviations as potential faults. Both methods are evaluated on a real-world dataset comprising labelled snapshots of helicopter engine telemetry. While supervised models demonstrate strong performance when annotated failures are available, the AE achieves effective detection without requiring fault labels, making it particularly well suited for settings where failure data are scarce or incomplete. The comparison highlights the practical trade-offs between accuracy, data availability, and deployment feasibility, and underscores the potential of unsupervised learning as a viable solution for early fault detection in aerospace applications
Leveraging AI for Talent Management: From Talent Acquisition to Succession Planning
Full text linkThis chapter explores the transformative impact of artificial intelligence (AI), digital literacy, and learning and development (L&D) on talent management practices, particularly within the Middle Eastern context. Drawing on the Technology Acceptance Model (TAM) and Social Exchange Theory (SET), the research investigates how these digital HR practices influence employee engagement and talent retention, with organizational culture acting as a critical moderating factor. A structural equation modeling (SEM) approach based on survey data from 340 HR professionals across the Middle East reveals that AI recruitment, L&D, and digital literacy significantly enhance engagement and retention. However, their effectiveness is strongly moderated by the cultural context?where supportive, innovative cultures amplify positive outcomes, while hierarchical or change-resistant environments diminish them. The findings emphasize the importance of culturally adaptive strategies in implementing digital HRM tools and offer practical insights for policymakers and HR leaders seeking to foster engagement, loyalty, and workforce stability through digital transformation
Cinematic memory: divergent perspectives on argentina’s military dictatorship in five films
Full text linkA fines de 1983 con la recuperación de la democracia se realizaron una serie de filmes que recrearon los hechos ocurridos durante la dictadura militar. Mi propuesta se basa en un análisis audiovisual y narrativo de cinco largometrajes argentinos realizados entre 1983 y 2022: "La historia oficial", "Un muro de silencio", "Kamchatka", "El secreto de sus ojos" y "Argentina, 1985". El corpus evidencia una evolución significativa en las representaciones cinematográficas de la dictadura militar: desde la construcción de una memoria oficial consensual durante la transición democrática (La historia oficial, 1985), pasando por la reflexión crítica sobre el olvido institucional en los años menemistas ("Un muro de silencio", 1993), la despolitización nostálgica de la memoria en el contexto de crisis neoliberal ("Kamchatka", 2002), la reactivación judicial de la memoria durante el kirchnerismo ("El secreto de sus ojos", 2009), hasta la reivindicación institucionalista de la democracia en el contexto de polarización contemporánea ("Argentina, 1985", 2022). Cada película no solo refleja las coyunturas políticas específicas de su producción, sino que participa activamente en la construcción de memorias hegemónicas diferenciadas: de la reconciliación nacional a la militancia setentista, del olvido programático a la justicia transicional, revelando cómo el cine argentino ha funcionado como arena de disputa por los sentidos del pasado traumático en el marco de procesos de transnacionalización de la industria cinematográfica.Following the restoration of democracy in Argentina at the end of 1983, a series of films emerged that depicted events from the military dictatorship era. This study presents an audiovisual and narrative analysis of five Argentine feature films produced between 1983 and 2022: "La historia oficial", "Un muro de silencio", "Kamchatka", "El secreto de sus ojos", and "Argentina, 1985". These films offer diverse perspectives and approaches to a complex and traumatic past that profoundly impacted Argentine society. The analysis reveals that these works not only present varying interpretations of historical events but also reflect the political, economic, and social contexts of their production and exhibition. Furthermore, the study examines how these films engage with broader processes of globalization and transnationalization, providing insight into the evolving cultural memory of Argentina’s recent history
Biomass ash and phase change material (PCM) for energy efficiency of sustainable cement-lime composites
Full text linkSustainability and nearly zero-energy consumption of new and existing buildings is a keystone in the new guidelines established by the European Commission. Likewise, waste management is in the focus of reducing the impact of industrial processes. The use of industrial byproducts, such as biomass ashes (BA), can be an interesting solution for waste valorization, reducing the carbon footprint and enhancing sustainability. In addition, Phase Change Materials (PCMs) can be used for improving energy efficiency due to their thermal storage capacity. An experimental study on the effect of biomass ash (BA) and PCM on the microstructure, chemical, physical and mechanical properties of cement–lime pastes was carried out. The partial replacement of cement with BA reduced compressive strength although did not substantially modify other paste properties, while the addition of PCM had a huge impact on microstructure and, therefore, physical and mechanical properties. PCM had a remarkable effect on thermal properties, endowing thermal storage capacity and reducing thermal conductivity, and the combination with BA further improved paste thermal properties.Comisión Europea (Fondos Next Generation
