Category: Future colloquia

Our next colloquium in the spring series is by Tanja Kallio from Aalto University on May 17th in Exactum B123.

Tanja Kallio, D.Sc. (Tech.), is an associate professor in electrochemistry and physical chemistry at the Aalto University School of Chemical Engineering. Her Electrochemical Energy Conversion Group investigates materials and components for such electrochemical conversion and storage applications as low temperature fuel cells and electrolysers, and lithium and sodium batteries. The core theme is improving sustainability by utilizing materials and energy more efficiently during the conversion processes. The work is carried out in close collaboration with various universities, research organizations and industry and funded majorly by Business Finland, European Union, Jane and Aatos Erkko Foundation and Research Council of Finland. Tanja Kallio is a member of the Hydrogen Europe Research and EC Batteries Europe working groups furthering the research and innovation actions in these fields.

The title of the talk is:

Artificial Cathode Electrolyte Interfaces for Understanding and Engineering of Lithium Battery High-Voltage Cathodes

The event will take place on Friday 17.05.24  at 14:15 in Exactum B123

The event was also be streamed via Zoom: https://helsinki.zoom.us/j/61083314010

Abstract of the talk:

Lithium-ion batteries are in our everyday use in various applications extending from portable devices to vehicles and energy storage. The forecasted exponentially growing need of lithium batteries puts pressure on developing more efficient and sustainable lithium batteries by increasing their lifespan and energy content. I will introduce you one approach for understanding high energy cathode materials operation and ageing – that is fabricating and investigating artificial cathode electrolyte interfaces (ACEI). This approach enables gaining insight into how protective interfaces formed in conventional batteries during the battery operation affect the battery functioning and ageing. Technological relevance of this approach relays on the capability of ACEIs for enhancing battery lifespan without sacrificing the performance.

Our next colloquium in the spring series is by Pauliina Ilmonen from Aalto University on March 8th in Physicum E204.

Pauliina Ilmonen is a professor (tenured associate professor) in Statistics and Mathematical Data Science at Aalto University School of Science. She is also the vice head (in charge of teaching) of the Department of Mathematics and Systems Analysis. She has over a decade of teaching experience from various universities, including University of Tampere, University of Turku, Université libre de Bruxelles, and Aalto University. She teaches several bachelor’s and master’s level courses at Aalto University, and she is the responsible teacher of a minor in Statistics. She is known for her ability to discuss complicated matters in an understandable way. Pauliina Ilmonen chaired the Finnish Statistical Society from February 2018 to January 2022. She is a member of the European Regional Committee of Bernoulli Society, and she is a member of the advisory board of Statistics Finland. She loves statistics and she participates actively in public discussions related to statistics. In 2020 she received the Aalto SCI Scientific communication award.

In her research work, Pauliina Ilmonen focuses on topics in the field of mathematical statistics. Her research group’s most significant research topics are multivariate extreme value theory, invariant coordinate selection (ICS), independent component analysis (ICA), functional data analysis (FDA), change point analysis, and analysis stationary processes. Also pure mathematics is close to Pauliina’s heart. Her research group’s interest there lies on characteristics of meet and join (hyper)matrices. In addition to deriving theoretical results, her group is working on applied topics related to cancer epidemiology and the epidemiology of viruses. Doing applied work enables to contribute to research that may have significant public health implications.

Vice Head (in charge of teaching) of the Department of Mathematics and Systems Analysis

Professor (tenured Associate Professor), Statistics and Mathematical Data Science

PhD (2011, University of Tampere, Major: Biometry, Minor: Epidemiology)

https://research.aalto.fi/en/persons/pauliina-ilmonen

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The title of the talk is: On extreme quantile regions

The event will take place on Friday 08.03.24  at 14:15 in Physicum E204

The event was also be streamed via Zoom: https://helsinki.zoom.us/j/61083314010

Abstract of the talk:

Modeling of rare phenomena is of paramount importance in many fields of science and wide variety of application areas of extreme value theory have multivariate problems to solve. Assessing tail behavior is challenging as, e.g., extreme quantile regions corresponding to a very small probability often contain only a few or no observations. We propose a novel affine equivariant extreme quantile region estimator for multivariate heavy-tailed elliptical variables. The estimator is constructed by extending a well-known univariate extreme quantile estimator. Consistency of the estimator is proved under estimated location and scatter. We briefly discuss the estimation of extreme quantile regions under other multivariate (and infinite dimensional) models as well.