Repositorio Universidad Pontificia Comillas: Envíos recientes
Mostrando ítems 2021-2040 de 61659
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Enhancing keyphrase extraction from long scientific documents using graph embeddings
(2025-07-01)This study explores the integration of graph neural network (GNN) representations with pre-trained language models (PLMs) to enhance keyphrase extraction (KPE) from lengthy documents. We demonstrate that incorporating graph ... -
Support mechanisms for low-carbon hydrogen: The risks of segmenting a commodity market
(2025-07-01)Although the actual scope of the hydrogen sector is subject to great uncertainty, a global wave of support mechanisms for low-carbon hydrogen is being registered. In many cases, these schemes aim to bridge the gap between ... -
A Stochastic Adaptive Robust Optimization Approach to Build Day-Ahead Bidding Curves for an EV Aggregator
(2025-07-08)This paper proposes a stochastic adaptive robust optimization approach to build the bidding curves of an aggregator managing a fleet of electric vehicles (EVs) participating in the day-ahead and intraday electricity markets. ... -
Alpha entropy search for new information-based Bayesian optimization
(2025-07-08)Bayesian optimization (BO) methods based on information theory have obtained state-of-the-art results in several tasks. These techniques rely on the Kullback–Leibler (KL) divergence to compute the acquisition function. We ... -
COMISET: Dataset for the analysis of malicious events in Windows systems
(2025-08-01)The evaluation of threat detection and prevention systems requires the use of datasets that are up-to-date and correctly designed according to the most common threats. Currently, the availability of event datasets containing ... -
Single-level flexible robust optimal bidding of Renewable-Only Virtual Power Plant in energy and secondary reserve markets
(2025-08-01)This paper proposes a novel single-level robust mathematical approach to model the Renewable-only Virtual Power Plant (RVPP) bidding problem in the simultaneous day-ahead and secondary reserve markets. In existing single-level ... -
Regional rebound effects of energy efficiency improvements in a spatial general equilibrium framework
(2025-08-01)We study the impact of energy efficiency improvements and associated rebound effects on regional economies in the European Union. We use a spatial dynamic computable general equilibrium model calibrated for 235 regions and ... -
From crypto to NFTs: Identifying the new wave of digital investors
(2025-08-01)The objective of this paper is to explore whether NFT investors represent a distinct cohort within the broader crypto investment sphere. Employing data from a public survey with global outreach, we first find that NFT ... -
Frequency stability services to compensate for low inertia in renewable-dominated power systems
(2025-08-01)The shift towards non-synchronous generation reduces system inertia, creating operational challenges in power systems worldwide. This inertia challenge depends on the synchronous grid size, generation mix, and the existing ... -
Floating exchange rate efficiency: Grouping patterns and pandemic impacts
(2025-08-01)This study investigates the efficiency of global floating exchange rates spanning 19 years from 2004 to 2022. We examine the presence of long memory in a sample of twenty-five floating exchange rates against the US Dollar, ... -
A low frequency seismic triboelectric energy nano-generator used in slow and higher ground motion
(2025-09-01)Today sees a need for low-cost detectors able to measure slow ground motion in a broad range of low frequencies. In this sense, the use of triboelectric nanogenerators (TENGS) has been recently suggested, motivated by their ... -
A novel method for evaluation of the maintenance impact in the health of industrial components
(2025-09-01)This study presents a novel method for evaluating maintenance effectiveness in industrial systems, built around the concept of “risk curves” as quantitative indicators of failure. By integrating Failure Modes and Effects ... -
Planning for energy justice? A discourse analysis of energy planning and climate policy in South America
(2025-09-01)Energy justice (EJ) frameworks strive for the equitable distribution of the costs and benefits of energy resources and systems. However, the meanings, values, and connections between EJ and energy planning remain ambiguous. ... -
A scalable and flexible solution to evaluate the effects of the integration of photovoltaic distributed generation systems within the electrical grid
(2025-09-01)This study introduces a novel methodological approach for evaluating the impacts of distributed photovoltaic (PV) generation systems within Urban Energy Systems (UES) on the distribution grid at an infrastructural level ... -
Analysing the electric vehicle charging behaviour in Spain: Patterns and insights
(2025-10-01)The growing adoption of electric vehicles (EVs) is a key component of Spain’s strategy for achieving sustainable transportation and energy systems. This paper analyses EV charging behaviour using individual smart meter ... -
Sim-to-real transfer via a Style-Identified Cycle Consistent Generative Adversarial Network: Zero-shot deployment on robotic manipulators through visual domain adaptation
(2025-11-01)The sample efficiency challenge in Deep Reinforcement Learning (DRL) compromises its industrial adoption due to the high cost and time demands of real-world training. Virtual environments offer a cost-effective alternative ... -
A criterion for holomorphic Lie algebroid connections
(2025-11-01)Given a holomorphic Lie algebroid (V,ø) on a compact connected Riemann surface X, we give a necessary and sufficient condition for a holomorphic vector bundle E on X to admit a holomorphic Lie algebroid connection. If (V,ø) is ... -
Fine-tuning transformer models for M&A target prediction in the U.S. ENERGY sector
(2025-12-12)This study explores the application of transformer models directly for classification in predicting mergers and acquisitions (M&A) targets within the U.S. energy sector. The primary objective is to evaluate the capability ... -
“It’s just a joke”: gender, sexuality and trivialisation in adolescent online violence such as cyberhate, cyberbullying, and online grooming
(2025-12-31)The article presents the results of part of the research conducted for the European Union Horizon 2020 project RAYUELA on cybercrime and minors, analysed from a gender perspective. Using a qualitative approach in eight ... -
Motives meet SymPy: studying -ring expressions in Python
(2025-12-31)We present a new Python package called "motives", a symbolic manipulation package based on SymPy capable of handling and simplifying motivic expressions in the Grothendieck ring of Chow motives and other types of λ-rings. ...