Universidad de Jaén

Feasibility Region Analysis of a Single-Phase PWM Current Source Converter for Constant Power Loads in Smart Grid and Microgrid Applications

Constant power loads (CPLs) introduce nonlinear voltage–current characteristics that can restrict the feasible operation of power-electronic converters. This paper presents a nonlinear steady-state framework for characterizing the feasible operating region of a single-phase PWM c...

Three-dimensional experimental investigation of the interaction between a rising bubble and a vortex ring

The interaction between turbulent flows and bubbles is a complex phenomenon ubiquitous in natural and industrial settings. In this work, we experimentally investigate, from a fundamental perspective, the interaction between a rising bubble and a vortex ring in counterflow. Using...

Neurotransmitter Systems and Systemic Resilience in the Healthy Aging Brain

Physiological brain aging is driven by progressive neuro-glial-vascular remodeling, in which neurotransmitter systems serve as the core functional network integrating central resilience and peripheral systemic signaling. This narrative review provides a comprehensive synthesis of...

Fuzzy Fault Detection and Band-Conditioned Data Quality Assessment for Sensor Streams: A Continuous Glucose Monitoring Case Study

Sensor faults can propagate beyond raw measurements and distort the aggregates used to interpret a monitored phenomenon. We propose a domain-agnostic, five-layer fuzzy pipeline that characterizes the reliability of a sensor stream jointly over time and value bands and carries it...

Stochastic Convex Optimization for Day-Ahead Shared Battery Storage Scheduling in Solar Energy Communities

Energy communities represent a transformative paradigm for decentralized renewable energy integration, enabling collective investment in photovoltaic (PV) systems and battery energy storage systems (BESS) to achieve economic and environmental benefits. However, the optimal operat...

Reinforcement learning-enhanced three-layer hybrid BESS-hydrogen storage in renewable microgrids with adaptive reliability thresholds and degradation awareness

In low-carbon microgrids, hybrid battery-hydrogen storage is crucial for managing renewable energy variability. However, current optimization techniques overlook battery degradation and rely on static reliability standards that fail to adapt to changing system conditions. This pa...

Sociodemographic Heterogeneity in Gastronomic Tourism Spending and Willingness to Pay

This study examines whether sociodemographic characteristics are associated with three dimensions of gastronomic tourists’ economic behaviour: gastronomic spending propensity, premium willingness to pay (WTP) for gastronomic experiences, and premium WTP for local-value and sustai...

Variable reactive power compensators versus fixed and switchable capacitor banks in providing ancillary services considering voltage fluctuations

Voltage fluctuations across distribution network buses can significantly influence both load consumption patterns and the reactive power output of compensation devices. To address these effects, strategic placement of reactive power support equipment is essential. While prior res...

Contextual processes (psychological flexibility, self-compassion and mindfulness) and peer bullying and cyberbullying in children and adolescents: protocol for a systematic review and meta-analysis

Protocol (version 1.0, 3 October 2026) of a systematic review and meta-analysis on the association between contextual psychological processes (psychological flexibility or inflexibility, experiential avoidance, cognitive fusion, self-compassion and trait mindfulness) and peer bul...

A new fractional-order cascade controller structure for frequency regulation of interconnected renewable-dominant power systems

Abstract Ensuring reliable frequency regulation in contemporary multi-area interconnected power systems has become increasingly demanding due to changes in consumption patterns, the massive integration of intermittent renewable energy sources (RESs), the integration of distribute...

Characterization of the fragmented mitogenome of the European badger louse Trichodectes melis reveals conserved organization in non-coding regions

Abstract Mitochondrial genome fragmentation is widespread in lice but remains poorly understood, with molecular data still scarce for many ectoparasitic species, particularly those associated with wild hosts. Here, we characterize the complete mitochondrial genome of Trichodectes...

Hydrochemical Evidence of Groundwater Transfer Between Karst Aquifers in Southern Spain: Implications for Climate Resilience and Groundwater-Dependent Ecosystems

The Upper Cretaceous and Jurassic karst aquifers of Sierra de Segura (southern Spain) represent an important groundwater resource within Sierras de Cazorla, Segura, and Las Villas Natural Park (the largest protected area in Spain). The two carbonate aquifer systems are separated...

Optimal electric vehicle charging station planning in distribution networks using a Pareto-based parallel multi-verse optimizer

This study develops a Pareto-based framework for optimal electric vehicle charging station (EVCS) planning in distribution networks under time-varying conditions. EVCS locations and integer EV allocations are jointly optimized to minimize weekly technical energy losses and maximi...

Assessing subsidence at fuel-storage tanks in Moa Port, Cuba, using interferometric synthetic aperture radar and engineering-geological interpretation

This study investigates ground deformation affecting fuel-storage tanks TK-5 and TK-6 at Moa Port, Cuba, a coastal facility built on reclaimed ground. The analysis integrates Interferometric Synthetic Aperture Radar (InSAR), engineering-geological interpretation of borehole data,...

An Alternative Test to Evaluate the Assistance Provided by Back-Support Exoskeletons: A Pilot Study

OCCUPATIONAL APPLICATIONSThe test proposed in this study, assimilable to a maximal isometric mid-thigh pull, appears to detect the acute assistance provided by the exoskeleton, expressed as the difference in performance with and without donning the device; the test can be perform...

Associations of Social Support, Loneliness, and Physical Activity with Cognitive Function in Older Adults with Mild Cognitive Impairment

Objectives: This study investigated how perceived social support, loneliness, and physical activity are related to cognitive performance among older adults with mild cognitive impairment. Methods: This cross-sectional investigation included 112 community-dwelling older adults wit...

Association of Weekly Moderate-to-Vigorous Physical Activity with Subjective Vitality and Mental Toughness in Spanish Adolescents Aged 10–16 Years

Physical activity levels decline notably during adolescence, raising concerns due to its impact on present and future psychological health. Understanding how weekly MVPA is associated with psychological functioning during adolescence may provide relevant information for research...

The Impact of Climate Change on Pregnant Women’s Health: A Scoping Review of Reviews

Background/Objectives: Records through early 2026 mark 2025 as the warmest year in over 170 years. Pregnant women are among the populations most vulnerable to climate change. The objective of this study was to conduct a review that synthesizes existing knowledge on how the differ...

Search for signatures of outflow interaction around Cygnus X-3

Abstract Cygnus X-3 is a microquasar hosting a Wolf–Rayet star, recently identified as a Galactic PeVatron and a potential ULX source. We analyzed high-resolution H i data to search for interstellar medium interaction signatures across all proposed distances. We identify a candid...

A Fuzzy Logic Model for Sustainable Water and Energy Resource Management in Mediterranean Greenhouses

Water scarcity, rising energy costs, and limited technology adoption challenge Mediterranean greenhouse horticulture. Although irrigation automation and digital decision-support tools have been widely studied, adoption barriers and integrated water–energy decision support are oft...