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Analyzing stability in a platoon of vehicles with reaction time delay
(2024)2024 TRB Annual Meeting Online Program ArchiveThis paper presents a study of the collective dynamics of a group of $n$ homogeneous vehicles traveling on a ring-road using the Optimal Velocity Model (OVM). We incorporate driver reaction time in the model, treating the vehicle as a time-delay system, to accurately capture real-world traffic scenarios. Analyzing the stability of time-delay systems is more complicated than for non-delayed systems, and so we investigate the stability of ...Other Conference Item -
Software for examples of "Minimally-Invasive Robustly Safe Control using Density Functions"
(2024)Two methods to perform certifiable robustly safe control of dynamical systems are barrier and density functions. Minimally-invasive control for barrier functions proceeds by picking an input with minimal norm away from a reference control law subject to respecting the barrier safety constraint. This minimally-invasive law for each state can be derived by solving a quadratic program in an online manner. However, the synthesis problem of ...Other Conference Item -
3D-printed formworks for glass fibre reinforced shotcrete
(2023)Glass fibre reinforced shotcrete has the potential to be sprayed onto any shape imaginable. Nevertheless, the possibilities are limited by the availability and fabrication constraints of adequate moulds or formworks. This paper describes a method to produce precise glass fibre reinforced shotcrete building elements with complex geometries using 3D-printed formworks. These elements benefit from the high strength of concrete while inheriting ...Other Conference Item -
Optimal design of hydrogen supply chains under demand and resource uncertainty
(2023)Extended Abstracts of the 33rd European Symposium on Computer Aided Process Engineering (ESCAPE-33)The scale-up of hydrogen supply chains is essential to achieve carbon neutrality by 2050. In this work, an optimization-based hydrogen supply chain model is developed to investigate the optimal roll-out of hydrogen supply chains considering hydrogen demand and resource uncertainties. We identify biomass-based hydrogen production as the most cost-effective low-carbon hydrogen production option. However, electricity-based hydrogen production ...Other Conference Item -
The impact of spatial resolution on the optimal design of low-carbon hydrogen supply chains
(2023)Other Conference Item -
Long-term ambulatory monitoring and identification of digital biomarkers in narcolepsy
(2024)Sleep MedicineOther Conference Item -
Sleep stage classification with a network of wearable and contactless devices
(2024)Sleep MedicineOther Conference Item -
Productive Failure
(2022)ICER '22: Proceedings of the 2022 ACM Conference on International Computing Education ResearchThere is now a substantive body of research that demonstrates the effectiveness of Productive Failure (PF) for learning novel concepts across STEM domains. I will start by describing what PF is, and situate the case for PF both theoretically and empirically. I will then delineate boundary conditions for how, when and why PF succeeds, ending with implications for teaching and learning.Other Conference Item -