Previous events - Page 196

Cedric Wieland, Durham University

_{Weekly Theory Seminar.}

Late Lunch Talk by Vidyadhar Aktore, Ashoka Trust for Research in Ecology and the Environment, India

Dr. Stefanie Barbirz, from the University Potsdam, Germany, will give the talk entitled  "Tailspike cell adhesion systems  in bacteriophage infection and  as diagnostic tools".

Abstract: Recently, Steve Kaliszewski, Tron Omland, and I have been investigating the following theorem of Pedersen: two actions of a compact abelian group on C*-algebras A and B are outer conjugate if and only if there is an equivariant isomorphism between the crossed products that respects the positions of A and B. We upgraded this to nonabelian groups (using coactions on the crossed products), and then searched for examples showing that the last condition (on the positions of A and B) is necessary. We failed. This lead us to formulate the "Pedersen Rigidity Problem": if the crossed products of A and B are equivariantly isomorphic, are the actions on A and B outer conjugate? We have been finding numerous "no-go theorems", which give various sufficient conditions for Pedersen Rigidity. Quite recently we have done this for ergodic actions of a compact group, assuming that the actions have "full spectrum". In fact, these actions are (not just outer) conjugate if and only if the dual coactions are. I will summarize our progress on the Pedersen Rigidity Problem and outline the proof of the no-go theorem for these compact ergodic full-spectrum actions.

Late Lunch Talk by Hernán E. Morales, University of Gothenburg, Sweden

Learn how to see the real value of your research. Join this Science for Society Workshop focusing on how you can communicate your work and boost your research value to potential partners, users, industry or investors.

Cand. Scient. Fred-Johan Pettersen at Department of Physics will be defending the thesis 

"Bioimpedance as a tool in Cardiac resyncronisation therapy"

for the degree of PhD

Doctoral candidate Cand. Scient. Fred-Johan Pettersen at Department of Physics will give a trial lecture on the given topic:

"Bionics in biomedical engineering. An overview over the field and the biotechnical issues."

Welcome to our GEOHYD Lunch Seminar Wednesday 8th December @ 11:00 in Aud 1, The Geology building. The seminar is helt by Chris Nuth, Department of Geosciences.

We will have a “mingle” meeting. There will be updates from Kristine and Per on the running of the institute. But fear not, there will also be plenty of time for informal chat and eating of cake. All are welcome to the lobby on the first floor.

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Loic Labrousse

From UPMC, ISTeP, Paris

On behalf of Professor Slagsvold we would like to invite you all to this special seminar on December 7th. Thirteen former students of Slagsvold will give short presentations of their current research. Open for all!

Expression of the bacterial ectABC genes in the chloroplast of Chlamydomonas reinhardtii

The invited Volterra Lecture at UiT co-hosted by DigiBiotics is given by Prof Inger Sandlie who successfully have combined the role as innovator and researcher.

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Dmitriy Kolyukhin

From Trofimuk Institute of Petroleum Geology and Geophysics, Novosibirsk, Russia

Late Lunch Talk by Chloé Nater, CEES, University of Oslo

Marc Stift from The Department of Biology, University of Konstanz, Germany, will give the talk entitled "Inbreeding depression and the transition to selfing in North American Arabidopsis lyrata"

Cand.Pharm. Ragnhild Birkeland Waade ved Farmasøytisk institutt vil forsvare sin avhandling for graden ph.d: Pharmacological aspects related to the use of antidepressants in elderly patiens.

Tiago Pereira, ITA

”The exposure and accumulation of seabird-derived contaminants and genotoxicity in Collembola from Svalbard”

Dr. Alex Lewin, Reader in Statistics, based at the Institute of Environment, Health and Societies of the Brunel University London, will present the lecture entitled "Bayesian inference on high-dimensional Seemingly Unrelated Regressions, applied to metabolomics data."

Stochastic optimization of block Toeplitz matrices

Optimization of orbitals with respect to some function are conventionally sought by means of calculating gradients to the given function, thus tracing out a path towards some extremum. Depending on the function involved, the gradients may be cumbersome to compute, and the risk of converging to some local extremum is present. In my presentation I will consider how simple stochastic methods could potentially eliminate the requirement of calculating gradients and greatly increase the probability of convergence to a global extremum. Some practical examples for periodic systems will be discussed.