Tidligere arrangementer - Side 44

Associate professor Aaron Hess and professor Jens Kjeldsen will give a seminar to the Text & Rhetoric Research Seminar, on a theme of great importance to rhetorical studies as well as to life in general: ethos.

Associate professor Aaron Hess will give a seminar to the Text & Rhetoric Research Seminar, on the theme ?participatory approaches to rhetoric?.

By Jos¨¦ Pablo V¨¢zquez-Medina from the University of Bekerley

What¡¯s in a ¡®verb¡¯? Is there some lexical content which marks a word as a ¡®verb¡¯ or ¡®noun¡¯, or even a single level of analysis at which we could define them? Evidence from multiple fields of linguistics suggests not.

Jan Eivind Myhre, Professor Emeritus at the Department of Archaeology, Conservation and History, University of Oslo.

Following Givental, enumerative mirror symmetry can be stated as a relation between genus zero Gromov-Witten invariants and period integrals. I will talk about a relative version of mirror symmetry that relates genus zero relative Gromov-Witten invariants of smooth pairs and relative periods. Then I will talk about how to use it to compute the mirror proper Landau-Ginzburg potentials of smooth log Calabi-Yau pairs.

Department seminar. Inga Deimen is an assistant professor at the University of Arizona. She will present the paper: "Strategic information transmission in the employment relationship" (written with Andreas Blume).

I will go through my PhD work at DTU. It is about the development of a fully-nonlinear finite difference based potential flow solver which imposes all of the fluid boundaries via an immersed boundary method. The convergence and stability of this approach is first established for various linear and nonlinear wave propagation problems. When it comes to the wave-body interaction problem, cautious attention is paid to the intersection point between free surface and body surface, and a scheme which meets the accuracy and stability requirements best is picked from several proposals. With the scheme introduced in this paper, piston type wave maker and forced heaving cylinder cases with high oscillation frequency have been simulated successfully.

Internal solitary waves (ISWs) are underwater waves of great amplitude moving horizontally in the layered ocean. The waves induce a velocity field which is felt both at the ocean surface, throughout the entire water column, and at the bottom. When of great amplitude, the waves induce a vortex wake in the bottom boundary layer behind the wave and transport water in the vertical direction displacing, e.g., sediments from the bottom. A fundamental mechanism in the ocean ecosystem is the vertical mixing and movement of particles, e.g., biological materials. In this talk, we present numerical simulations of ISWs of depression and of large amplitude by replicating a laboratory experiment. Furthermore, we discuss the dynamics of ISW-sediment interactions and illustrate particle movements, trajectories, and particle distribution in the water column under the influence of ISWs of large amplitude.

Quentin Noraz, Postdoctoral Fellow at Rosseland Centre for Solar Physics, University of Oslo.

Guest lecture. Dr. Andreas Ravndal Kost?l will hold a guest lecture with the title "Workforce Analytics: Understanding Labor Demand".

The digital guest lecture is open to the public, and staff and students are welcome to attend.

Guest lecture. Dr. Adrien Vigier will hold a guest lecture about "Moral hazard".

The guest lecture is open to the public, and staff and students are welcome to attend.

Felleskollokvium by Heidi Sandaker, Head of the Norwegian Center for CERN-related research (NorCC)

In this talk, professor of cultural studies, Ben Highmore explores the role of playgrounds in equipping the young with skills to face a climate catastrophe. How should we understand the history of playgrounds? What is their relationship to their environments and the environment, and what role could they play in the current climate emergency?  

C*-algebra seminar by Ole Brevig (University of Oslo)

Anastasia Maravela (University of Oslo)

Welcome to the first seminar of the semester, where we will host a talk by Dr. Elise H. Thompson (Fyhn Group, FYSCELL, IBV)

In this informal seminar, Eline Visser will report about her last field trip to the Indonesian Karas Islands, where she gathered data on the previously undocumented language Uruangnirin. She'll talk about language endangerment, fieldwork methods, Uruangnirin grammatical relations, some other preliminary findings and whatever else comes up.

Why is deep learning so successful in many applications of modern AI? This question has puzzled the AI community for more than a decade, and many attribute the success of deep learning to the implicit regularization imposed by the Neural Network (NN) architectures and the gradient descent algorithm. In this talk we will investigate the implicit regularization of so-called linear NNs in the simplified setting of linear regression. Furthermore, we will show how this theory meets fundamental computational boundaries imposed by the phenomenon of generalized hardness of approximation. That is, the phenomenon where certain optimal NNs can be proven to exist, but any algorithm will fail to compute these NNs to an accuracy below a certain approximation threshold. Thus, paradoxically, there will exist deep learning methods that are provably optimal, but that can only be computed to a certain accuracy.

Vegard Antun is a postdoctoral fellow at the University of Oslo, department of Mathematics.

Harald Thommesen, Postdoctoral Fellow at Institute of Theoretical Astrophysics, University of Oslo.

By Turk Rhen, University of North Dakota, USA

Department seminar. Adrien Vigier is a Professor/Chair in Economics at University of Nottingham. He will present the paper: "Product Variety and Market Segmentation"