Previous events - Page 251

 Eva Leu (Akvaplan-NIVA)

Late Lunch Talk by Emanuela Di Martino

Eduard Ortega, NTNU, will give a talk with title: Cuntz-Krieger uniqueness theorems

Abstract: I will make a little survey about Cuntz-Krieger uniqueness theorems and how they help to the study of the ideal structure of the rings to which one can apply them. In certain classes of (C*-)algebras this is described as topologically freeness or condition (L). However they are important classes of rings for which are not known Cuntz-Krieger type theorems. I will present a class of rings, that generalize Leavitt path algebras and Passman crossed products, for which I can totally characterize the Cuntz-Krieger uniqueness theorem.

Friday seminar by Vadim B. Fedorov from University of Alaska Fairbanks

Welcome to the GeoHyd Lunch Seminar on Friday 10 April @12:15 in AUD 1 in the Geology building.

Master i farmasi Maria Elisabeth Brandal Berstad ved Farmasøytisk institutt vil forsvare sin avhandling for graden ph.d: Photochemical internalization of recombinant toxins targeting EGFR and HER2 for treatment of aggressive and resistant cancers.

This week we will discuss a paper by Kemppainen et al. introducing a new methodology for studying linkage disequilibrium with genomic data.

Ann-Cecilie Larsen, Post.doc., Dep. of Physics/SAFE, University of Oslo

In the Macroevolution Journal Club this week we'll discuss a method paper from 2014 on how to include as much fossil data as possible in calibrating phylogenies by Heath, Huelsenbeck and Stadler in PNAS: The fossilized birth-death process for coherent calibration of divergence-time estimates.

Bring a friend!

Parameter-robust finite element discretization and its preconditioning for Biot's consolidation model in poroelasticity

Upcoming short presentation from MSc/PhD students in meteorology and oceanography:

Speaker: Helle Kristine Fuhr

Title: Partition between barotropic and baroclinic modes in the ocean

Supervisor: Joe LaCasce

Erik Bédos will give a talk with title: On the Fourier-Stieltjes algebra of a C*-dynamical system

Abstract: When G is a discrete group, its Fourier-Stieltjes algebra B(G) may be described as the set of coefficient functions associated with unitary representations of G on Hilbert spaces. In a similar way, if Sigma=(A, G, alpha, sigma) is a unital discrete twisted C*-dynamical system, one may let the Fourier-Stieltjes algebra B(Sigma) consist of the functions from G x A into A that arise as coefficient functions of equivariant representations of Sigma on Hilbert A-modules. We will explain how B(Sigma) may be organized as an algebra with conjugation, and show that it may be represented as completely bounded multipliers on the full crossed product C*(Sigma). (This is also known to be true for the reduced crossed product). This is part of an ongoing project with Roberto Conti (Rome).

Upcoming short presentation from MSc/PhD students in meteorology and oceanography:

Speaker: Christine Smith-Johnsen

Title: The secondary ozone layer during the southern hemispheric major stratospheric warming

Supervisor: Yvan Orsolini and Frode Stordal

Welcome to the GeoHyd Lunch Seminar on Friday 13 March @12:15 in AUD 1 in the Geology building.

Carl Henrik Gørbitz, Professor - Kjemisk institutt

This week in the macroevolution journal club we will read a paper by Hopkins and Smith newly published (2015) in PNAS: Dynamic evolutionary change in post-Paleozoic echinoids and the importance of scale when interpreting changes in rates of evolution. 

This week we will discuss a paper by Pujolar et al. (Molecular Ecology 2014) on genome-wide signatures of local adaptation.

Please note that the day and time of the meeting have changed, it will take place in the aquarium on Friday the 27th at 11!

Arvid Siqveland, Høgskolen i Buskerud og Vestfold, gives the Seminar in Algebra and Algebraic Geometry:

Modular curves V

Upcoming short presentation from MSc/PhD students in meteorology and oceanography:

Speaker: Marta Trodahl

Title: Eddy characteristics in the Subarctic Seas, and the potential eddy generation mechanisms

Supervisor: Pål Erik Isachsen

These are the fifth and and the sixth lectures given by Anders Hansen (Cambridge Univ. and UiO) on Compressed sensing - Theory and Applications.

Daniele Gaggero, SISSA, Trieste, Italy  [slides]

In the first part of the talk, after a general introduction on the physics of cosmic rays (CRs), I present a detailed overview on recent results regarding modeling of CR propagation in the Galaxy and in the Heliosphere. In particular I focus on the necessity to go beyond the standard and simplified picture of uniform and homogeneous diffusion, showing that gamma-ray data point towards different propagation regimes in different regions of the Galaxy. I also sketch the impact of large-scale structure on CR observables. Concerning the propagation of the Heliosphere, I mention the necessity to consider a charge-dependent modulation scenario.

In the second part, I discuss several aspects of the recent claim of a gamma-ray excess in the Galactic center region, discussing in particular the interpretation in terms of Dark Matter, compared to other astrophysical interpretations. I will emphasize the interplay between the non-trivial aspects of CR propagation discussed in the first part and the understanding of the GC excess origin. In particular, I will show in detail how the knowledge of the CR transport parameters and solar modulation is crucial to investigate the compatibility with other channels (namely antiprotons) and to provide alternative astrophysical interpretations.

”Littoral and upper sublittoral macroalgal vegetation from 8 sites around Svalbard.”

Continuing the discussion of papers related to graph based representation of reference genomes, we will read a paper on the cortex assembler, which actually builds a graph based on sequencing data from multiple samples.