All Years Seminars
[ELEN] 2025-12-16 (16:15) : Acquisition chain vs. value chain: how to reconcile technological innovations and market needs
At BARB91
Speaker :
Thomas Walewyns (ChipsWIN - ICHEC)
Abstract : Dr. Walewyns received the M.Sc. degree in electromechanical engineering and a Ph.D. degree in engineering sciences, both at the Université catholique de Louvain (UCLouvain), Louvain-la-Neuve, Belgium, in 2010 and 2016 respectively. In 2010, he obtained the AILouvain Innovation Award for his master thesis. From 2013 to 2015, he was also carrying out an Executive Master in Management at the Louvain School of Management. Specialized in microsensors, system integration and micro-/nano-fabrication, he is author and co-author of more than 20 scientific articles and conference papers, and holds 3 patents. Passionate about innovation and driven by business, he founded VOCSens, a UCLouvain spin-off developing selective multi-gas microsensors for environmental monitoring & industrial applications, that he managed from 2019 to 2024. He is now leader of ChipsWIN, the Walloon competence centre in semiconductors, strategic advisor for various startups, and part-time guest lecturer at ICHEC.
[ELEN] 2025-12-15 (16:15) : Raw material challenges in photovoltaic technology: entering the terawatt age
At BARB10
Speaker :
Jonathan Parion (University of Hasselt)
Abstract : Jonathan Parion is a PhD student at the University of Hasselt, the University of Ghent and imec. His current work focuses on the characterization and simulation of perovskite thin-film solar cells, specifically to improve their stability and sustainability. Before his PhD, Jonathan followed a master in electrical engineering science at UCLouvain, focusing on device physics and nanotechnology.
[INGI] 2025-12-11 (13:00) : Combinatorial Transition Testing in Dynamically Adaptive Systems: Implementation and Test Oracle
At Shannon, Maxwell a.105
Speaker :
Pierre Martou (ICTEAM)
Abstract : Due to the large number of possible interactions and transitions among features in dynamically adaptive systems, testing such systems poses significant challenges. To verify that such systems behave correctly, combinatorial interaction testing (CIT) can create concise test suites covering all valid pairs of features of such systems. While CIT claims to find all errors caused by two features, it does not cover certain errors occurring only for specific transitions between features. To address this issue we study the technique of Combinatorial Transition Testing (CTT), which includes both generation and detection of what we call behavioural transition errors. From an initial generation algorithm that combines both interaction and transition coverage but lacks scalability, we propose an optimised version that enables CTT even for hundreds of features. From a valid test suite covering all transitions, we complete our testing approach with a test oracle that detects all behavioural transition errors without any prior knowledge of the system's behaviour. After a comprehensive analysis over a large number of feature models, we conclude that size of CTT-generated test suites and test effort needed to use our test oracle are linearly correlated to CIT-generated ones and that CTT grows logarithmically in the number of features.
[INMA] 2025-12-09 (14:00) : Matroids are equitable
At EULER (room A.002)
Speaker :
László Végh (University of Bonn)
Abstract : We show that if the ground set of a matroid can be partitioned into k≥2 bases, then for any given subset S of the ground set, there is a partition into k bases such that the sizes of the intersections of the bases with S may differ by at most one, settling a conjecture by Fekete and Szabó from 2011.
In the talk, I will present the surprisingly simple proof, as well as some extensions and applicaitons in fair division. I will also give an overview of related questions on matroid basis exchanges. This is based on joint work with Hannaneh Akrami, Roshan Raj, and Siyue Liu.
[INGI] 2025-12-04 (13:00) : Empowering QUIC with Connection Delegation to Save Energy
At Shannon, Maxwell a.105
Speaker :
Vany Ingenzi (ICTEAM)
Abstract : The end-to-end principle is fundamental to the design of the Internet, requiring that hosts participating in a transport connection remain continuously capable of processing packets. However, this principle conflicts with the energy-saving needs of battery-powered wireless devices, which benefit from short and intermittent activity periods.
In this talk, we present a QUIC connection delegation mechanism that allows a client to transfer an active connection to a trusted third party by securely migrating its connection state. The third party then maintains the connection and handles data exchanges on behalf of the original client, allowing the client device to enter a power-saving mode. Our evaluation shows that QUIC connection delegation can reduce energy consumption over Wi-Fi by up to 55% when the smartphone can utilize its sleep mode, and by 25% when accounting for background traffic and an active display.
Seminars
INMA Contact Info
Mathematical Engineering (INMA)
L4.05.01
Avenue Georges Lemaître, 4
+32 10 47 80 36
secretaire-inma@uclouvain.be
Mon – Fri 9:00A.M. – 5:00P.M.
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