2 citations · 4 across the 10 of their papers we have counts for
16 papers
Tool-calling retrieval versus vector RAG for a small Greek--English knowledge base: accuracy and robustness to how users type Greek
Nikolaos D. Tantaroudas, Ilias Karachalios, Andrew J. McCracken
Assistants grounded in a small, frequently edited knowledge base can retrieve through tool calls to a live data interface or through vector retrieval-augmented generation (RAG). We…
Where does a rust speedup come from? Language and algorithm effects in sliding window threat scorer
Nikolaos D. Tantaroudas, Ilias Karachalios, Andrew J. McCracken
Rewriting a hot path from Python into Rust is a common way to speed up security analytics, and large speedups are routinely reported. A rewrite usually changes the language and the…
Compressible aerodynamics and rigid-body support motion in post-flutter piezoelectric energy harvesting from a pitch-plunge-flap aerofoil
Nikolaos D. Tantaroudas, Ilias Karachalios, Andrew J. McCracken
A piezoelectric transducer on a pitching and plunging aerofoil with a trailing edge flap turns the limit cycle that follows flutter into electrical power, and two modelling changes…
Rigid-body support motion and post-flutter piezoelectric energy harvesting from a pitch-plunge-flap aerofoil
Nikolaos D. Tantaroudas, Ilias Karachalios, Andrew J. McCracken
A piezoelectric transducer on a pitch-plunge aerofoil with a finite-mass trailing-edge flap turns the limit cycle that follows flutter into electrical power. The design findings fo…
Transducer Placement and the Limits of a Four-State Reduced Model in Post-Flutter Piezoelectric Energy Harvesting from a Pitch-Plunge-Flap Aerofoil
Nikolaos D. Tantaroudas, Ilias Karachalios, Andrew J. McCracken
Aeroelastic ?utter is normally a failure mode to be designed against, yet the limit-cycle oscillations (LCOs) that follow it convert flow energy into sustained structural motion th…
Smallholder Farmers on Remote Islands Receiving Retrieval-Grounded Multilingual LLM Assistance and Agronomic Advice
Nikolaos D. Tantaroudas, Ilias Karachalios, Andrew J. McCracken
Smallholder farming communities in remote, depopulating areas have limited access to agricultural advice, and their locally specific agronomic knowledge, often expressed in regiona…
A coupled Aeroelastic-Flight Dynamic Framework for Free-Flying Flexible Aircraft with Gust Interactions
Nikolaos D. Tantaroudas, Ilias Karachalios
A complete, self-contained mathematical framework for modelling the coupled aeroelastic and flight dynamic behaviour of free-flying flexible aircraft subject to atmospheric gust en…
Nonlinear Flexibility Effects on Flight Dynamics of High-Aspect-Ratio Wings
Nikolaos D. Tantaroudas, Ilias Karachalios
This paper investigates the effects of geometric nonlinearity and structural flexibility on the flight dynamics of high-aspect-ratio wings representative of high-altitude long endu…
Model Reference Adaptive Control For Gust Load Allevation of Nonlinear Aeroelastic
Nikolaos D. Tantaroudas, Guanqun Gai, Ilias Karachalios
Model Reference Adaptive Control based on Lyapunov stability theory is developed for gust load alleviation of nonlinear aeroelastic systems. The controller operates on a nonlinear…
H Infinity Robust Control for Gust Load Alleviation of Geometrically Nonlinear Flexible Aircraft
Nikolaos D. Tantaroudas, Ilias Karachalios
H Infinity robust control synthesis for gust load alleviation of very flexible aircraft is presented. The controller is synthesised on a compact reduced-order model comprising 8 de…
Rapid Worst-Case Gust Identification for Very Flexible Aircraft Using Reduced-Order Models
Nikolaos D. Tantaroudas, Ilias Karachalios
Identification of worst-case gust loads is a critical step in the certification of very flexible aircraft, yet the computational cost of nonlinear full-order simulations renders ex…
Nonlinear Model Order Reduction for Coupled Aeroelastic-Flight Dynamic Systems
Nikolaos D. Tantaroudas, Ilias Karachalios
A systematic approach to nonlinear model order reduction (NMOR) of coupled fluid-structureflight dynamics systems of arbitrary fidelity is presented. The technique employs a Taylor…
XR-CareerAssist: An Immersive Platform for Personalised Career Guidance Leveraging Extended Reality and Multimodal AI
N. D. Tantaroudas, A. J. McCracken, I. Karachalios +2
Conventional career guidance platforms rely on static, text-driven interfaces that struggle to engage users or deliver personalised, evidence-based insights. Although Computer-Assi…
SentinelSphere: Integrating AI-Powered Real-Time Threat Detection with Cybersecurity Awareness Training
Nikolaos D. Tantaroudas, Ilias Karachalios, Andrew J. McCracken
The field of cybersecurity is confronted with two interrelated challenges: a worldwide deficit of qualified practitioners and ongoing human-factor weaknesses that account for the b…
INTERACT: An AI-Driven Extended Reality Framework for Accesible Communication Featuring Real-Time Sign Language Interpretation and Emotion Recognition
Nikolaos D. Tantaroudas, Andrew J. McCracken, Ilias Karachalios +1
Video conferencing has become central to professional collaboration, yet most platforms offer limited support for deaf, hard-of-hearing, and multilingual users. The World Health Or…
AI-Driven Modular Services for Accessible Multilingual Education in Immersive Extended Reality Settings: Integrating Speech Processing, Translation, and Sign Language Rendering
N. D. Tantaroudas, A. J. McCracken, I. Karachalios +1
This work introduces a modular platform that brings together six AI services, automatic speech recognition via OpenAI Whisper, multilingual translation through Meta NLLB, speech sy…