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Gjesteforelesninger og seminarer - Side 3

Tid og sted: 13. nov. 2020 12:1513:00, Zoom

Abstract: Magnetic Resonance Elastography (MRE) is an emerging technique to measure the bio-mechanical properties of tissue in vivo. We present measurements of the shear modulus in healthy subjects, and in patients with brain cancer.

This talk is part of the Mechanics Lunch Seminar series. That means 20min talks plus discussion in an informal setting.

Zoom: To obtain the Zoom meeting details please contact Timo Koch (timokoch at math.uio.no).

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Tid og sted: 10. nov. 2020 14:1515:15, Niels Henrik Abels hus, 8th floor

Steffen Grønneberg (Department of Economics, BI Norwegian Business School) will give a talk on November 10th at 14:15 (held with restricted attendance in the Erling Sverdrups plass, Niels Henrik Abels hus, 8th floor and streamed in Zoom - the link will be sent by mail one day in advance).

Tid og sted: 6. nov. 2020 12:1513:00, Zoom

Abstract: Upon burst, air bubbles release droplets that transfer biological and chemical materials from water bodies to the atmosphere. This mechanism is one of the main sources of cloud condensation nuclei and participates to airborne contamination when the bulk water contains pathogens. Predicting the size and composition of droplets emitted by bubbles requires a fundamental understanding of their dynamic at the surface, yet a consistent physical picture is lacking. Relying on experimental data from bubbles generated in various environments and using scaling analysis, I will show that surface tension gradients control the drainage of bubbles. I will also explain how local perturbations of surface tension can explain their seemingly stochastic burst mechanism. Consequences for application purposes will be mentioned throughout the presentation: I will notably take the examples of bubbles in saltwater and in water contaminated with bacteria.

This talk is part of the Mechanics Lunch Seminar series. That means 20min talks plus discussion in an informal setting.

Zoom: To obtain the Zoom meeting details please contact Timo Koch (timokoch at math.uio.no).

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Tid og sted: 28. okt. 2020 09:3016:30, Abels Utsikt

Now it's time for the traditional PhD/postdoc-gathering for Stochastics and Risk which will take place in Abels Utsikt and online on October 28th, 09.30 - 16.30. All PhD students and postdocs have the opportunity to give a 15-minute talk on their research. In addition, Jocelyne Bion-Nadal (École Polytechnique) will give an introductory talk and Kristina Rognlien Dahl (UiO) will introduce the SCROLLER project. As a member of the section, you can attend either in person or online. Welcome!

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Tid og sted: 27. okt. 2020 14:1515:15, Zoom

Benjamin Kedem (Department of Mathematics, University of Maryland, USA) will give a talk on October 27th at 14:15 in Zoom - the link will be sent by mail one day in advance).

Tid og sted: 23. okt. 2020 12:1513:00, Niels Henrik Abels hus, 9th floor, seminar room 919

 

Registration Link: https://nettskjema.no/a/167852 

Abstract: Frailty is a multi-system dysregulation leading to a loss of physiological reserve known to predict dementia. However, its link with neurodegenerative alterations of the central nervous system (CNS) is not well understood at present. We investigated the association between the biomechanical response of the CNS and frailty in older adults suspected of normal pressure hydrocephalus (NPH) presenting markers of multiple comorbid neurodegenerative pathologies, including pathologies of Alzheimer’s Disease. The biomechanical response of the CNS was characterized from phase contrast magnetic resonance imaging and intracranial pressure monitoring during a lumbar infusion test. Frailty was assessed with an index of health deficit accumulation. We found a significant association between the CNS biomechanical response and frailty, with an effect size comparable to that between frailty and age, the latter being the strongest known risk factor of frailty. The CNS biomechanical characterization may help to understand how frailty is related to neurodegeneration and detect the shift from normal to pathological brain ageing.

This talk is part of the Mechanics Lunch Seminar series. That means 20min talks plus discussion in an informal setting.

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Tid og sted: 13. okt. 2020 14:1515:15, Niels Henrik Abels hus, 8th floor

Christian Page (Department of Mathematics, University of Oslo) will give a talk on October 13th at 14:15 (held with restricted attendance in the Erling Sverdrups plass, Niels Henrik Abels hus, 8th floor and streamed in Zoom - the link will be sent by mail one day in advance).

Tid: 9. okt. 2020 14:1515:00

C*-algebra seminar talk by Ulrik Enstad (University of Oslo)

Tid og sted: 9. okt. 2020 12:0012:45, Niels Henrik Abels hus, 9th floor, seminar room 919

I will present some of my work on the solid-electrolyte interface. There, so-called electric double layers (EDLs) can form that consist of electrons on the solid screened by a diffuse cloud of ions in the adjacent liquid. EDLs are of paramount importance to many processes in physical chemistry, soft matter and biophysics, as well as in EDL capacitors and modern "supercapacitors". My work on EDLs focused on their (out-of-equilibrium) formation through questions like: 'On what timescale does an electrolyte respond to an applied temperature or voltage difference?', 'How does the (local) temperature in an electrolyte react to an applied electric field?', and 'How is the EDL affected by a change in temperature or salt concentration?'. I will show how answers to these questions suggest new methods for harvesting sustainable energy, for instance, from the controlled mixing of seawater and river water.

This talk is part of the Mechanics Lunch Seminar series. That means 20min talks plus discussion in an informal setting.

Registration Link:  https://nettskjema.no/a/161232

 

Tid: 2. okt. 2020 14:1515:00

C*-algebra seminar talk by Ole Brevig (University of Oslo)

Bildet kan inneholde: motorkjøretøy, produkt, illustrasjon, transportmiddel, utklipp.
Tid og sted: 1. okt. 2020 09:0015:00, Digitally on Zoom

The Department of Mathematics at the University of Oslo has again the pleasure to invite you to an Insurance Day! We offer a schedule with interesting topics within finance and insurance.

We are Norway's leading provider of actuaries and financial mathematicians to the insurance and finance industry and also, the leading research group in this field.

 

Bildet kan inneholde: motorkjøretøy, produkt, illustrasjon, transportmiddel, utklipp.
Tid og sted: 1. okt. 2020 09:0015:00, Foajeen Vilhelm Bjerknes hus, Blindern

Matematisk Institutt ved Universitetet i Oslo ønsker deg med dette velkommen til en forsikringsdag der noen av landets topp fagfolk vil ta deg med gjennom noen av de mest dagsaktuelle emner innen forsikring.

Vi er er landets ledende leverandør av aktuarer og finansmatematikere til forsikrings- og finansnæringen og også det ledende forskningssenter på disse feltene.

 

Tid og sted: 18. sep. 2020 12:0012:45, Niels Henrik Abels hus, 9th floor, seminar room 919

DuMux  (short for "Dune for Multi- {Phase, Component, Scale, Physics,…} flow and transport in porous media") is  a free and open-source simulator for flow and transport processes in porous media. DuMux is modern C++ code based on the scientific software framework Dune (Distributed and Unified Numerics Environment) and has a focus on modularity and reusability. 

The main features and ideas behind DuMux will be introduced with several examples from recent research projects.

This talk is part of the Mechanics Lunch Seminar series. That means 20min talks plus discussion in an informal setting.

Registration Link:  https://nettskjema.no/a/161230

 

Tid og sted: 26. aug. 2020 10:0012:00, Blindern/Zoom

Welcome to the SPATUS kick-off seminar, marking the start of the Thematic Research Group funded by UiO:Energi. The virtual seminar will take place on Zoom.

Tid og sted: 19. juni 2020 11:1512:00, Zoom - lenke blir sendt ut på mail

Title: Recent advances in Deep Reinforcement Learning applied to Active Flow Control, by Jean Rabault

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Tid og sted: 19. mai 2020 14:1515:15, Zoom

Mette Langaas (Department of Mathematical Sciences, Norwegian University of Science and Technology) will give a talk on May 19th at 14:15 in Zoom (the link to the event will be available soon).

Tid: 13. mai 2020 09:3015. mai 2020 17:00

The 5th Scandinavian Gathering Around Remarkable Discrete Mathematics

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Tid og sted: 7. mai 2020 11:0017. juni 2020 12:00, Online

During these strange corona times, the need for continuous interaction in science is coming stronger.

We now launch this new Spring Seminar Series Online in probability, stochastic analysis and applications. 

These online seminars are both meant to give a scientific update of our doings, as well as being a social event that we can attend once a week from our home-office. Prepare yourself with a good cup of coffee or tea!

If you want to take part to the seminars, please register at this link.

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Tid og sted: 5. mai 2020 14:1515:15, Zoom

Heidi Seibold (Department of Statistics, Ludwig-Maximilians-Universität of Munich, GER) will give a talk on May 5th at 14:15 in Zoom https://uio.zoom.us/j/66792241824.

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Tid og sted: 21. apr. 2020 14:1515:15, Zoom

Antonio Canale (Department of Statistical Sciences, University of Padova, ITA) will give a talk on April 21st at 14:15 in Zoom (https://uio.zoom.us/j/66042762975).

Tid og sted: 2. apr. 2020 14:1516:00, NHA B1120
Tid og sted: 24. mars 2020 13:0014:00, NHA 1020

The seminar lecture is cancelled due to epidemic situation in Norway.

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Tid og sted: 16. mars 2020 14:1515:15, Niels Henrik Abels hus, 8th floor

Due to travel restrictions related to the spread of Covid-19, the talk of  Lokukaluge Prasad Perera (Department of Technology and Safety, Artic University of Norway), supposedly held on March 16th at 14:15 in the Erling Sverdrups plass, Niels Henrik Abels hus, 8th floor, has been CANCELLED.

Tid og sted: 11. mars 2020 11:0012:00, NHA 108

Roberto Conti (Sapienza University of Rome, Italy) will give a seminar  talk on 

              Connes isometries of the Cuntz algebras

Tid og sted: 6. mars 2020 12:1513:00, NHA 919

Title: Numerical studies of rheology and elasticity, by Prof Luca Brandt, Linnè FLOW Centre and SeRC (Swedish e-Science Research Centre), Department of Engineering Mechanics, KTH, Stockholm.