Documentos de Trabajo: Recent submissions
Now showing items 261-280 of 2480
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Thermal interaction of geothermal boreholes with groundwater flows at peclet numbers of order unity
The presence of aquifers significantly affects the thermal response of geothermal boreholes. Consequently, theoretical models used in the design and sizing of geothermal heat exchangers must account for their presence. ... -
Enhancing AC Line Emulation controls for improved inter-area oscillation damping and application to Multi-Terminal DC Grids
The integration of High Voltage Direct Current (HVDC) systems into modern power systems offers opportunities to enhance grid resilience through advanced functionalities such as AC line emulation. By emulating AC line ... -
A conditional value at risk-based optimal power flow in hybrid ACDC power systems
In recent decades, the demand for energy and the need to improve power systems' efficiency have made hybrid ACDC systems an effective solution. They are crucial for integrating renewable energy sources (RESs), like wind ... -
Improving Novelty and Diversity of Nearest-Neighbors Recommendation by Exploiting Dissimilarities
Neighborhood-based approaches remain widely used techniques in collaborative filtering recommender systems due to their versatility, simplicity, and efficiency. Traditionally, these algorithms consider similarity functions ... -
Emergent phenomena in computation: from enthropy to artificial consciousness?
This talk will explore how computing provides a privileged window onto emergence—the phenomenon whereby novel, irreducible properties arise from simple interactions. We begin by clarifying key concepts: synergy, patterns, ... -
PRIMER: Perception-Aware Robust Learning-based Multiagent Trajectory Planner
In decentralized multiagent trajectory planners, agents need to communicate and exchange their positions to generate collision-free trajectories. However, due to localization errorsuncertainties, trajectory deconfliction ... -
The use of artificial intelligence in diagnostic imaging
Health metrology plays a crucial role in modern medicine. This discipline faces significant challenges that demand innovative solutions to ensure precise and reliable medical measurements. Health metrology thus positions ... -
Impact of electric charge compensation on wind energy production: a statistical quantile regression analysis
The energy production behavior of wind turbines is generally controlled and regulated by the analysis of the generated energy versus wind speed. The wind speed is referred to as the measurements taken by an anemometer ... -
Emerging innovations in metrology for medical device technologies: advancing healthcare precision
The lack of uniformity among working standards for medical equipment calibration poses a significant challenge in achieving comparable measurements across Spanish hospitals. Furthermore, although beyond our scope, each ... -
Transcendence of generalized lorentz-lorenz relation in refractometry: statistical incidences
The well-known Lorentz-Lorenz relation is currently used in several branches of Optics and Materials Properties for understanding the behaviour of materials and gases under the presence of light. However, this relation was ... -
Analysis of the New Portuguese and Spanish NECPs using CEVESA market model
The recent updates of the National Energy and Climate Plans (NECPs) for Portugal and Spain have some significant changes compared to the previous 2019 versions, especially for the Portuguese side where a greater demand and ... -
Batteries Ageing Impact on Economic Medium-Term Dispatch Models of Electricity Generation
With the penetration of renewable energy sources to reduce the emissions of carbon-emitting technologies, there has been an increased interest towards using batteries to improve system reliability. However, batteries have ... -
Assesing the Role of Fuel Cell Vehicles in the Iberia Energy Transition
The mobility sector is expected to significantly impact the power system by deploying battery electric vehicles (BEV) and fuel cell vehicles (FCEV). This work improves CEVESA, a market model for the long-term planning and ... -
Sizing of Battery Storage Systems to Mimic the Operation of RES-based VPPs in Electricity Markets
The presence of large-scale Battery Energy Storage Systems (BESSs) in the grid is increasing at a quick pace, mainly to facilitate the process of the also increasing penetration of Renewable Energy Sources (RESs). However, ... -
Thermal performance assessment of closed-loop geothermal heat exchangers with vertical, inclined, and curved boreholes
Accurate sizing of closed-loop geothermal heat exchangers is crucial to ensuring the energy efficiency and cost-effectiveness of shallow geothermal HVAC systems. One common design limitation is the restricted surface area ... -
A big-data approach to assess transport poverty: a case study of Madrid
Transport poverty, a multifaceted issue, has garnered increasing attention in recent years. This study employs anonymized mobile phone data and GIS techniques to analyze commuting patterns, economic burdens, and spatial ... -
Designing robust energy transition policy portfolios under deep uncertainty
The complexity of transitioning to sustainable energy systems requires policy frameworks capable of balancing multiple objectives while addressing deep ncertainty. However, existing approaches often lack systematic methods ...