http://hdl.handle.net/20.500.12367/1847 Sat, 25 Apr 2026 23:38:45 GMT 2026-04-25T23:38:45Z http://hdl.handle.net/20.500.12367/2904 An agile adaptive biased-randomized discrete-event heuristic for the resource-constrained project scheduling problem Martin Solano, Xabier Andoni; Herrero Antón, Rosa; Juan, Angel A.; Panadero, Javier In industries such as aircraft or train manufacturing, large-scale manufacturing companies often manage several complex projects. Each of these projects includes multiple tasks that share a set of limited resources. Typically, these tasks are also subject to time dependencies among them. One frequent goal in these scenarios is to minimize the makespan, or total time required to complete all the tasks within the entire project. Decisions revolve around scheduling these tasks, determining the sequence in which they are processed, and allocating shared resources to optimize efficiency while respecting the time dependencies among tasks. This problem is known in the scientific literature as the Resource-Constrained Project Scheduling Problem (RCPSP). Being an NP-hard problem with time dependencies and resource constraints, several optimization algorithms have already been proposed to tackle the RCPSP. [...] Sat, 01 Jun 2024 00:00:00 GMT http://hdl.handle.net/20.500.12367/2904 2024-06-01T00:00:00Z http://hdl.handle.net/20.500.12367/2856 Eye-tracking calibration to control a cobot Faura Pujol, Anna; Faundez-Zanuy, Marcos; Moral-Viñals, Aleix; López Xarbau, Josep The present study pursues to determine the optimal operation range of a specific screen-based eye-tracker, the Tobii X2-30, regarding the variation of precision and accuracy in measures. Furthermore, a connection setup to operate a collaborative robot (cobot) Omron TM5-700 by means of this eye-tracker will be presented. The possibility to operate a collaborative robot by gaze can be used as a third arm, which allows human beings to do more sophisticated activities, as well as making the manipulation of dangerous or perilous substance easier and safer. When developing new technological tools, we have mainly two options. The first one consists on a specifically designed hardware. [...] Wed, 01 Mar 2023 00:00:00 GMT http://hdl.handle.net/20.500.12367/2856 2023-03-01T00:00:00Z http://hdl.handle.net/20.500.12367/2855 Online handwriting, signature and touch dynamics: tasks and potential applications in the field of security and health Faundez-Zanuy, Marcos; Mekyska, Jiri; Impedovo, Donato Advantageous property of behavioural signals (e.g. handwriting), in contrast to morphological ones (e.g. iris, fingerprint, hand geometry), is the possibility to ask a user to perform many different tasks. This article summarises recent findings and applications of different handwriting/drawing tasks in the field of security and health. More specifically, it is focused on on- line handwriting and hand-based interaction, i.e. signals that utilise a digitizing device (specific devoted or general-purpose tablet/smartphone) during the realization of the tasks. Such devices permit the acquisition of on-surface dynamics as well as in-air movements in time, thus providing complex and richer information when compared to the conventional “pen and paper” method. [...] Fri, 01 Oct 2021 00:00:00 GMT http://hdl.handle.net/20.500.12367/2855 2021-10-01T00:00:00Z http://hdl.handle.net/20.500.12367/2854 The effect of fatigue on the performance of online writer recognition Sesa-Nogueras, Enric; Faundez-Zanuy, Marcos; Garnacho‑Castaño, Manuel‑Vicente The performance of biometric modalities based on things done by the subject, like signature and text-based recognition, may be affected by the subject’s state. Fatigue is one of the conditions that can significantly affect the outcome of handwriting tasks. Recent research has already shown that physical fatigue produces measurable differences in some features extracted from common writing and drawing tasks. It is important to establish to which extent physical fatigue contributes to the intra-person variability observed in these biometric modalities and also to know whether the performance of recognition methods is affected by fatigue. In this paper, we assess the impact of fatigue on intra-user variability and on the performance of signature-based and text-based writer recognition approaches encompassing both identification and verification. [...] Sun, 03 Oct 2021 00:00:00 GMT http://hdl.handle.net/20.500.12367/2854 2021-10-03T00:00:00Z