Fri 17 Oct 14:00: On uncertainty quantification for nonparametric multivariate Hawkes processes
Multivariate Hawkes processes form a class of point processes describing self and inter exciting/inhibiting processes. There is now a renewed interest of such processes in applied domains and in machine learning, but there exists only limited theory about inference in such models apart from parametric models. After reviewing results on convergence rates for Bayesian nonparametric approaches to such models, I will present new results on uncertainty quantification for important functionals.
The rest of the abstract can be found at https://drive.google.com/file/d/10gjAoVtcY-yyE_qdtEw8vDF4rmqb3BQO/view?usp=sharing
- Speaker: Judith Rousseau (Université Paris Dauphine)
- Friday 17 October 2025, 14:00-15:00
- Venue: MR12, Centre for Mathematical Sciences.
- Series: Statistics; organiser: Qingyuan Zhao.
Mon 20 Oct 13:00: Multihazard in a warming world: landslides, volcanoes and cryospheric hazards in the 21st century
Glacierized mountainous areas make up some of the most hazardous landscapes of our planet, and are undergoing profound changes under 21st century climatic warming. The answers to two fundamental questions are required in these areas: (i) what is the baseline hazard and risk, and (ii) are the hazard and risk likely to increase or decrease in coming decades. While these questions remain largely unanswered on a global scale, this presentation delves into the subject through a series of case studies of complex hazards in glacierized and high-mountain areas.
In this talk, I will consider both the gaps in our current knowledge, and how novel techniques and datasets help bridge these. In particular, I will discuss the two-way interactions between landslides and glaciers, improving summit ice volume estimates at glacierized volcanoes, and new optical feature tracking approaches to map slope deformation the scale of mountain ranges. The evolving hazard profile intersects with a growing population and rapidly developing infrastructure networks. As a result, a cross-disciplinary approach is essential to comprehensively analyse and mitigate risk. This talk highlights the significance of addressing these challenges and explores avenues for future research.
- Speaker: Max Van Wyk de Vries, Department of Earth Sciences / Department of Geography, University of Cambridge
- Monday 20 October 2025, 13:00-14:00
- Venue: MR3, CMS.
- Series: Quantitative Climate and Environmental Science Seminars; organiser: Bethan Wynne-Cattanach.
Thu 30 Oct 11:30: Particle-driven convection
Particle-driven convection occurs when a dense particle-laden layer settles into a layer of clear fluid. This can drive a variation on the classical Rayleigh-Taylor instability, where particles induce the density difference between the two fluids. Variants of this instability occur in many geophysical flows, such as the undersides of volcanic ash clouds, sediment-laden river outflows, and the dynamics of droplets in clouds. This talk will present some new experimental results of Rayleigh-Taylor instability occurring between a particle-laden and fresh-water layers. I will also present some preliminary results that examine the effect of adding salt to the lower layer. For this second case, the initial stratification is stable, but becomes unstable due to particle settling.
- Speaker: Megan Davies Wykes (University of Cambridge)
- Thursday 30 October 2025, 11:30-12:30
- Venue: Open Plan Area, Institute for Energy and Environmental Flows, Madingley Rise CB3 0EZ.
- Series: Institute for Energy and Environmental Flows (IEEF); organiser: Catherine Pearson.
Degradation Phenomena in PEMWE Revealed by Correlative Electrochemical and Nanostructure Analysis
DOI: 10.1039/D5EE03712C, Paper Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Selina Finger, Birk Fritsch, Mingjian Wu, Leopold Lahn, Darius Hoffmeister, Johannes Will, Olga Kasian, Erdmann Spiecker, Simon Thiele, Anna T. S. Freiberg, Andreas Hutzler
Understanding degradation mechanisms in proton exchange membrane water electrolysis (PEMWE) is critical for advancing the long-term durability of the technology. In this study, we investigate degradation induced by four distinct...
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Tue 11 Nov 14:00: TBA
Abstract not available
- Speaker: Howie Haber, University of California Santa Cruz
- Tuesday 11 November 2025, 14:00-15:00
- Venue: MR19 (Potter Room, Pavilion B), CMS.
- Series: HEP phenomenology joint Cavendish-DAMTP seminar; organiser: Benjamin Christopher Allanach.
Using light to print metal oxides
Nature Materials, Published online: 10 October 2025; doi:10.1038/s41563-025-02371-y
A plasmonic printing technology is developed to enable rapid, room-temperature, scalable fabrication of all-metal oxide thin-film transistors and circuits.Publisher Correction: Bose–Einstein condensation of a two-magnon bound state in a spin-1 triangular lattice
Nature Materials, Published online: 10 October 2025; doi:10.1038/s41563-025-02399-0
Publisher Correction: Bose–Einstein condensation of a two-magnon bound state in a spin-1 triangular latticeAuthor Correction: Superconductivity and normal-state transport in compressively strained La<sub>2</sub>PrNi<sub>2</sub>O<sub>7</sub> thin films
Nature Materials, Published online: 10 October 2025; doi:10.1038/s41563-025-02394-5
Author Correction: Superconductivity and normal-state transport in compressively strained La2PrNi2O7 thin filmsGiant photoconductance at infinite-layer nickelate/SrTiO<sub>3</sub> interfaces via an optically induced high-mobility electron gas
Nature Materials, Published online: 10 October 2025; doi:10.1038/s41563-025-02363-y
The electronic ground state of a correlated oxide interface is reversibly switched by light. Stemming from interfacial reconstructions, electrostatic confinement and photodoping, this effect opens a path towards engineering the optical response of oxides.Reprogrammable snapping morphogenesis in ribbon-cluster meta-units using stored elastic energy
Nature Materials, Published online: 10 October 2025; doi:10.1038/s41563-025-02370-z
Lantern-shaped ribbon cluster meta-units harness stored elastic energy to achieve over 13 distinct volumetric snapping morphologies, with potential applications in soft robotics, deployable devices and mechanical logic.Multiple freezing–melting pathways of high-density ice through ice XXI phase at room temperature
Nature Materials, Published online: 10 October 2025; doi:10.1038/s41563-025-02364-x
Multiple freezing–melting pathways of ice VI are found at room temperature, occurring via the ice XXI and ice VII phases. Supercompressed water structurally evolves from high-density water to very-high-density water.Binding and release in balance
Nature Energy, Published online: 10 October 2025; doi:10.1038/s41560-025-01884-9
Integrating CO2 capture and electrochemical conversion may lower energy consumption relative to the separated processes, but scale-up is limited by low carbon conversion and energy-intensive solvent regeneration. Now, research shows that piperazine, alongside a Ni single-atom catalyst, allows effective, stable CO2 capture, and conversion to CO in a low-energy process.Isotropic armour for high-voltage operation
Nature Energy, Published online: 10 October 2025; doi:10.1038/s41560-025-01878-7
High-voltage solid-state sodium batteries often fail at the cathode–electrolyte interface due to side reactions. An isotropic metal–organic framework epilayer that conformally coats the cathode particles helps prevent side reactions, enabling stable cycling at an unusually high cutoff voltage of 4.2 V (vs Na/Na+), exceeding the typical ~3.9 V (vs Na/Na+) limit for polyethylene oxide-based sodium cells.Additives for thermal stability
Nature Energy, Published online: 10 October 2025; doi:10.1038/s41560-025-01879-6
In perovskite solar cells, the conventional n–i–p structure employing spiro-MeOTAD as a p-type hole transport layer suffers from poor thermal stability. Now, a non-volatile solid-state additive, 4-(N-carbazolyl)pyridine, is introduced to improve the thermal stability of spiro-MeOTAD and enable solar cells to perform more reliably under harsh conditions.Aromatic interaction-driven out-of-plane orientation for inverted perovskite solar cells with improved efficiency
Nature Energy, Published online: 10 October 2025; doi:10.1038/s41560-025-01882-x
Uncontrolled crystallization of perovskite limits the performance of solar cells. Zhou et al. address this through aromatic interactions between naphthalene ammonium salts and naphthalenesulfonates, achieving improved efficiency in cells and modules.Sulfonated polybenzimidazole for low-alkalinity ion solvating membrane water electrolysis
Nature Energy, Published online: 10 October 2025; doi:10.1038/s41560-025-01876-9
KOH-doped membranes, so-called ion-solvating membranes (ISMs), have been used in alkaline water electrolysers but face challenges with stability and narrow operational windows. Here a non-crosslinked, partially sulfonated polybenzimidazole ISM with enhanced conductivity and stability is reported, achieving high current densities and prolonged operation.Thu 30 Oct 17:00: Title to be confirmed
=== Hybrid talk ===
Join Zoom Meeting https://cam-ac-uk.zoom.us/j/89856091954?pwd=Bba77QB2KuTideTlH6PjAmbXLO8HbY.1
Meeting ID: 898 5609 1954 Passcode: ITPtalk
- Speaker: Jovan Gerbsheid (University of Cambridge)
- Thursday 30 October 2025, 17:00-18:00
- Venue: Centre for Mathematical Sciences, MR14.
- Series: Formalisation of mathematics with interactive theorem provers ; organiser: Anand Rao Tadipatri.
Thu 06 Nov 17:00: Title to be confirmed
=== Online talk ===
Join Zoom Meeting https://cam-ac-uk.zoom.us/j/89856091954?pwd=Bba77QB2KuTideTlH6PjAmbXLO8HbY.1
Meeting ID: 898 5609 1954 Passcode: ITPtalk
- Speaker: Jasmin Blanchette (Ludwig-Maximilians-Universität München)
- Thursday 06 November 2025, 17:00-18:00
- Venue: Online; live-streamed at MR14 Centre for Mathematical Sciences.
- Series: Formalisation of mathematics with interactive theorem provers ; organiser: Anand Rao Tadipatri.
Wed 22 Oct 16:30: Statistics Clinic Michaelmas 2025 II
This free event is open only to members of the University of Cambridge (and affiliated institutes). Please be aware that we are unable to offer consultations outside clinic hours.
If you would like to participate, please sign up as we will not be able to offer a consultation otherwise. Please sign up through the following link: https://forms.gle/kNUUmMP3FE5JtP6BA. Sign-up is possible from Oct 16 midday (12pm) until Oct 20 midday or until we reach full capacity, whichever is earlier. If you successfully signed up, we will confirm your appointment by Oct 22 midday.
- Speaker: Speaker to be confirmed
- Wednesday 22 October 2025, 16:30-18:00
- Venue: MR5.
- Series: Cambridge Statistics Clinic; organiser: tm681.
Thu 27 Nov 17:00: TBC
TBC
=== Hybrid talk ===
Join Zoom Meeting
- Speaker: René Thiemann (University of Innsbruck)
- Thursday 27 November 2025, 17:00-18:00
- Venue: MR14 Centre for Mathematical Sciences.
- Series: Formalisation of mathematics with interactive theorem provers ; organiser: Angeliki Koutsoukou-Argyraki.