Kommende arrangementer

Tid og sted: 29. sep. 2016 13:15, "Abels utsikt", 12. etasje Niels Henrik Abels hus

M.Sc. Tore Magnus Arnesen Taklo ved Matematisk institutt vil forsvare sin avhandling for graden ph.d.:

On the dispersion relation and spectral properties of surface gravity waves

 

Johanne Hope Rydsaa. Photo: Private.
Tid og sted: 29. sep. 2016 13:15, Faros, Toppsenteret, the CIENS building, Oslo Science Park

Johanne Hope Rydsaa at the Department of Geosciences will be defending her dissertation: On biosphere-atmosphere interactions in a changing climate

Tid og sted: 29. sep. 2016 14:15 - 16:00, B 735

In Part 2 we will delve into the worlds of derived and spectral algebraic

geometry. After reviewing some basic notions we will explain how motivic

homotopy theory can be extended to these settings. As far as time permits

we will then discuss applications to virtual fundamental classes, as well

as a new cohomology theory for commutative ring spectra, a brave new

analogue of Weibel's KH

Tid og sted: 29. sep. 2016 14:15 - 16:00, B 735

In Part 2 we will delve into the worlds of derived and spectral algebraic

geometry. After reviewing some basic notions we will explain how motivic

homotopy theory can be extended to these settings. As far as time permits

we will then discuss applications to virtual fundamental classes, as well

as a new cohomology theory for commutative ring spectra, a brave new

analogue of Weibel's KH

Tid og sted: 30. sep. 2016 11:15 - 12:00, Rom 304 (Peisestua), Institutt for teoretisk astrofysikk

Michal Michalowski, Royal Observatory Edinburgh, School of Physics and Astronomy, The University of Edinburgh

Tid og sted: 30. sep. 2016 11:15 - 12:00, B91, NHA bygget

Enrico Fermi and the birth of modern nonlinear physics

In the early fifties in Los Alamos E. Fermi in collaboration with J. Pasta and S. Ulam investigated a one dimensional chain of equal masses connected by a weakly nonlinear spring. The key question was related to the understanding of the phenomenon of conduction in solids; in particular they wanted to estimate the time needed to reach a statistical equilibrium state characterized by the equipartition of energy among the Fourier modes. They approached the problem numerically using the MANIAC I computer; however, the system did not thermailize and  they observed a recurrence to the initial state (this is known as the FPU-recurrence). This unexpected result has led to the development of the modern nonlinear physics (discovery of solitons and integrability). In this seminar, I will give an historical overview of the subject and present the different approaches that have been proposed in the last 60 years for explaining this paradox. Very recent results on the estimation of the time scale and on  the explanation of the mechanism of equipartition will also be discussed.

Mohammad Koochak Zadeh. Photo: Geir Holm/UIO
Tid og sted: 30. sep. 2016 12:15, Auditorium 1, the Geology building

Mohammad Koochak Zadeh at the Department of Geosciences will be defending his dissertation: Compaction and rock properties of siliciclastic sediments- Implications for reservoir characterization, velocity anisotropy and buildup of abnormal pore pressure

Tid og sted: 30. sep. 2016 13:15, Kristen Nygaards sal (5370), Ole-Johan Dahls hus, Gaustadalléen 23b

M.Sc. Narasimha Raghavan Veeraragavan at the Department of Informatics will be defending his dissertation for the degree of Ph.D:

Quality of Experience and Dependability in Distributed Interactive Multimedia Applications.

Tid og sted: 7. okt. 2016 11:15 - 12:00, Rom 304 (Peisestua), Institutt for teoretisk astrofysikk

Morten Bo Madsen, Associate Professor, Astrophysics and Planetary Science, Niels Bohr Institute

Tid og sted: 7. okt. 2016 13:15, Lille fysiske auditorium

Master of Science Marcel Moura ved Fysisk institutt vil forsvare sin avhandling for graden ph.d: "Burst Dynamics in Quasi- 2D Disordered Systems: Experiments on Porous Media Two- Phase Flows".