Tidligere arrangementer - Side 126
Rüdiger Kiesel,Uni. Essen/CMA, holder et seminar med tittelen: Market Risk Premium in Power Markets
Torben Mideksa (Cicero) skal snakke om
Electricity demand in a changing climate
We show that the hermitian K-theory of regular schemes (with 2 a unit in the ring of regular functions) is represented in the A^1-homotopy category of Morel-Voevodsky by the ind-scheme of non-degenerate Grassmanians.
Friday seminar by Massimo Pigliucci
Jan Conrad, Oskar Klein Centre, Physics Department, Stockholm University
Florence Delie, University of Geneva.
Dr. Bj?rn Kr?ger (Humboltuniversitetet i Berlin, Museum für Naturkunde) will give the lecture "Cephalopod origin and evolution: A congruent picture emerging from fossils, development and molecules".
Friday & Colloquium 2 seminar by Michael D. Purugganan
Guinevière Kauffmann, Max Planck Institute for Astrophysics, Garching.
Friday seminar by Marcos Llope
Mikjel Thorsrud, Institutt for teoretisk astrofysikk, UiO
Min-ge Xie, Department of Statistics, Rutgers University, skal snakke om
Confidence distribution and a Frequentist Approach to Incorporate Expert Opinions
Eirik Gjerl?w, stipendiat ved Institutt for teoretisk astrofysikk, UiO
Anders Barstad, Statistisk Sentralbyr?, skal snakke om
Explaining Changing Suicide Rates in Norway 1948-2004: The Role of Social Integration
Harald Yndestad, professor at ?lesund University College, (H?gskolen i ?lesund).
Ingram Olkin (Department of Statistics, Stanford University) skal snakke om
Meta-Analysis: Statistical Methods for Combining the Results of Independent Studies
Friday seminar by Steinar Engen
Dr. Cristiano Sabiu, post doc at University College London
CANCELLED! CEES Extra seminar by Marc Strous
Chris Wikle (Department of Statistics, University of Missouri) skal snakke om
Nonlinear Dynamic Spatio-Temporal Statistical Models
Open lecture by Professor Adam Driks, Loyola University Chicago Stritch School of Medicine.
Friday Seminar by John Shepherd
Yashar Akrami, Institutt for teoretisk astrofysikk, UiO
Foredragsholder: Dr. Kerstin Stahl, Institute of Hydrology, University of Freiburg, Germany
Tittel: How suited are hydrological models to assess the vulnerability of water allocations in global transboundary rivers to climate
This seminar will be focused on some elementary structural systems such as the cantilever beam. The cantilever is an old problem in structural mechanics already investigated by Galileo (1638) from equilibrium and strength arguments. This structural paradigm will be reconsidered here using buckling, post-buckling and inelastic theory. We will first present some fundamental buckling results for axially loaded columns. This model covers the case of a tree under its own weight or gives an answer to Babel mythology, at least from the stability theory point of view. This in-plane buckling problem in presence of distributed and concentrated axial forces has been recently exactly solved using hypergeometric functions. The post-buckling behavior associated with a nonlinear boundaryvalue problem will be also discussed using some asymptotic and numerical methods. The out-of-plane buckling problem of this cantilever beam will be further investigated. The lateral-torsiona l buckling problem of Prandtl (1899) dealing with the stability boundary of a beam loaded by its own weight and a concentrated force will be also solved. The convexity theorem of Papkovitch and Schaefer (1934) will be shown for these structural problems. The seminar will be concluded by the inelastic analysis of the beam in bending. We will show the need to develop a nonlocal plasticity law to describe the post-failure behavior of a beam in presence of softening. Wood’s paradox (1968) is overcome by using a nonlocal plasticity model. The Galileo problem is then revisited in the light of nonlocal mechanics. Applications of such theoretical studies can be found in the field of civil engineering at the macro scale (reinforced concrete design, timber beams, steel or composite beams…), but also at micro- or nano-scales including for instance nanostructures.
Challamel is Professor of Civil Engineering, University of South Brittany, Lorient, France, and Marie Curie Fellow in solid mechanics (faststoffmekanikk) at UiO (2011/2012).