Tidligere arrangementer - Side 35

Department seminar. Lars Thorvaldsen is a Lecturer at the Department of Economics, University of Oslo. He will present the paper: "Reassessing the Tax Sensitivity of Debt in Multinational Corporations."

Seminaret unders?ker kj?nnede forestillinger fra polaromr?denes kultur- og vitenskapshistorie gjennom presentasjoner og en panelsamtale. 

A peculiarity of nonlinear hyperbolic problems is that they must be interpreted as limits of second-order equations with vanishing viscosity. Despite not explicitly being present in the hyperbolic case, diffusion is needed, e. g., at discontinuities or to avoid the occurrence of nonphysical states. In the case of gas dynamics, for instance, dissipation corresponds to the production of thermodynamic entropy. To solve hyperbolic problems numerically, one needs to adapt these ideas to the discrete setting. Standard high-order methods, however, do not incorporate the appropriate amounts of artificial viscosity because these need to be chosen adaptively based on the solution. Among the high-resolution schemes capable of doing so are the recently proposed monolithic convex limiting (MCL) techniques [1] to be discussed in this talk. They offer a way to enforce physical admissibility, entropy stability, and discrete maximum principles for conservation laws. These methods can also be generalized to systems of balance laws in a well-balanced manner [2]. In addition to second-order finite element methods, extensions to high-order discontinuous Galerkin (DG) schemes shall also be presented [3]. Numerical examples for the so-called KPP problem, the nonconservative shallow water system, and the compressible Euler equations will be shown. An overview of MCL and other property-preserving methods can be found in our recently published book [4].

Duncan Watts, Postdoctoral Fellow at Institute of Theoretical Astrophysics, University of Oslo.

We prove that (logarithmic, Nygaard completed) prismatic and (logarithmic) syntomic cohomology are representable in the category of logarithmic motives. As an application, we immediately obtain Gysin maps for prismatic and syntomic cohomology, and we precisely identify their cofibers. In the second part of the talk we develop a descent technique that we call saturated descent, inspired by the work of Niziol on log K-theory. Using this, we prove crystalline comparison theorems for log prismatic cohomology, log Segal conjectures and log analogues of the Breuil-Kisin prismatic cohomology, from which we get Gysin maps for the A_inf cohomology.

Department seminar. Francis Wong is an Assistant Professor of Economics at the Ludwig-Maximilians University of Munich. He will present the paper: "Taxing Homeowners Who Won't Borrow."

By Tamara Hiltunen (University of Oulu Finland) and Emmanuel Serrano (Autonomous University of Barcelona, Spain)

Chiara Gazzini (IFIKK)

Once a month, NCMM invites international guest speakers to present on topics within molecular life science and medicine.

Department seminar. Ines Helm is an Associate Professor in Economics at LMU Munich. She will present the paper: "Displacement Effects in Manufacturing and Structural Change" (written with Alice K¨¹gler and Uta Sch?nberg).

Mikhail Spivakov from MRC Laboratory of Medical Sciences London will present on the topic of probing the functional effects of genetic variation at enhancers with 3D genomics.

By Khuong Van Dinh, AQUA, IBV

Jonas Thoen Faber, PhD student of Rosseland Centre for Solar Physics, University of Oslo.

Prof. Natalia Korolkova, University of St. Andrews

Det Norske Videnskaps-Akademis gruppe for religionsvitenskap og teologi inviterer til en ?pen dagskonferanse med tverrfaglig kunnskapsutveksling, refleksjon og samtale omkring bibeloversettelse.

Department seminar. Jonas S?ndergaard S?rensen is a PhD Student at the Department of Economics and Business Economics, Aarhus University. He will present the paper: ¡°Refugee Influx and Crime¡± (written with Anna Piil Damm, Ahmad Hassani and Timo Trimborn).

Alessandro Rippa joins the "Lifetimes Friday seminar" to share some preliminary reflections regarding time and temporality from his recent fieldwork in amber mines in Mexico.

Nina Hagen Kaldhol is a PhD Candidate in Linguistics at the University of California San Diego. In collaboration with native speakers of Tira, Rere and Somali, she works on language documentation while also aiming to advance our theoretical understanding of tone and morphological complexity.

We combine a pressure correction scheme with interior penalty discontinuous Galerkin (dG) discretisation to solve the time-dependent Navier¨CStokes equations. We prove unconditional energy stability and a priori error estimates for the velocity. With duality arguments, optimal L2 error rates are obtained. Convergence of the discrete pressure is also established.  Further, we propose a splitting scheme,  integrating the pressure correction approach, for the Cahn¨CHilliard¨CNavier¨CStokes system  The numerical analysis of dG combined with this scheme is discussed. Namely, we show well--posedness, stability, and error estimates. Numerical results with manufactured solutions display our theoretical findings, and a spinodal decomposition example portrays the robustness of our approach.

Tim Zimmermann, PhD student at the Institute of Theoretical Astrophysics, University of Oslo.

Department seminar. Birthe Larsen is an Associate Professor at the Department of Economics, Copenhagen Business School. She will present the paper: "Why Firms Lay Off Workers Instead of Cutting Wages: Evidence From Linked Survey-Administrative Data" (written with Antoine Bertheau, Marianna Kudlyak, and Morten Bennedsen).

Daniela Sueldo is an Associate Professor at the Department of Biology, NTNU. Daniela¡¯s research focus is deciphering the molecular mechanisms that lead to the execution and control of cell death in photosynthetic organisms as part of the response to environmental stress