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Tidligere arrangementer - Side 37

Tid og sted: , NHA 723 and Online
Tid og sted: , Room 1249 at Eilert Sundts Hus

Department seminar. Kai Liu is an Associate Professor at the Faculty of Economics, University of Cambridge. He will present the paper: "Understanding Program Complementarities: Estimating the Dynamic Effects of Head Start with Multiple Alternatives" (written with Marc K. Chan Antonio and Dalla-Zuanna).

Tid og sted: , Eilert Sundts hus, blokk B, Meeting room 1249 & ZOOM

Benjamin Donald Smith is a PhD candidate at the Centre for Technology, Innovation and Culture (TIK). This seminar marks his midway evaluation.

Tid og sted: , Room 1249 at Eilert Sundts Hus

Department seminar. Ingrid Mikkelsen Semb is a Lecturer at the Department of Economics, University of Oslo. She will present the paper: "Evaluating affirmative action when college applications are endogenous."

Tid og sted: , Peisestua (room 304), Svein Rosselands Hus / Zoom

Hans Arnold Winther, Institute of Theoretical Astrophysics, University of Oslo.

Tid og sted: , Room 1249 at Eilert Sundts Hus

Department seminar. Lee Fleming is a Professor at UC Berkeley. He will present a paper: "Isolating the inter-personal mechanisms of absorptive capacity" (written with Benjamin Balsmeier and Sonja Lück). 

Tid og sted: , Room 1249 at Eilert Sundts Hus

Department seminar. Laura Derksen is a researcher at the Ragnar Frisch Centre for Economic Research in Oslo. She will present the paper: "Who Knows? The Effect of Information Access on Social Network Centrality" (written with Pedro CL Souza).

Tid og sted: , NHA B1120

Markus Spitzweck (Universit?t Osnabrück) will present the talk ?Representation categories and motives?.

Tid og sted: , Niels Henrik Abels hus, 9th floor

This seminar will consist of two separate presentations, each about 15-minute long.

1) Magnetic Quincke Rollers with tunable single particle dynamics and collective states
2) Electrically controllable ferrofluids

Tid og sted: , Seminar room 3508 Bonnevie, Kristine Bonnevies hus

Unfortunately, the seminar by Olli Hyv?rinen, AQUA, IBV, is cancelled.

Tid og sted: , Niels Henrik Abels hus, 9th floor
It is well known that if the singular values of a matrix are distinct, then its best rank-n approximation in the Frobenius norm is uniquely determined and given by the truncated singular value decomposition. On the other hand, this uniqueness is in general not true for best rank-n approximations in the spectral norm. In this talk we relate the problem of finding best rank-n approximations in the spectral norm to Kolmogorov n-widths and corresponding optimal spaces. By providing new criteria for optimality of subspaces with respect to the n-width, we describe a large family of best rank-n approximations to a given matrix. This results in a variety of solutions to the best low-rank approximation problem and provides alternatives to the truncated singular value decomposition. This variety can be exploited to obtain best low-rank approximations with problem-oriented properties.
We further discuss the generalization of these results to compact operators in L2, and explain how they can be used to both describe the out-performance of smooth spline approximations of solutions to differential equations when compared to classical finite element methods, and to solve the outlier-problem in isogeometric analysis.
This talk is based on work done in collaboration with Michael Floater, Carla Manni and Hendrik Speleers.
Tid og sted: , Room 1249 at Eilert Sundts Hus

Department seminar. Anders Humlum is an Assistant Professor of Economics at the Booth School of Business, University of Chicago. He will present the paper: "Changing Tracks: Does Reskilling Help Disabled Workers Back to Work?" (written with Jakob R. Munch and Pernille Plato).

Tid og sted: , Room 1119, Niels Henrik Abels hus

The Section 4 seminar for the Spring of 2023 will be held on Wednesdays at 10:15–12:00 (see the schedule)

Tid og sted: , NHA107

C*-algebra seminar talk by John Quigg (Arizona State University)

Tid og sted: , Niels Henrik Abels hus, 9th floor

I will discuss some of our recent results on active chiral and nematic membranes. The chiral stresses we consider give rise to a novel form of odd elasticity. To outline this phenomenology I will give explicit calculations outlining spontaneous flow transitions and shape instabilities. I will discuss the relevance of these results in developmental biology and their relation to active nematics, in particular how certain limits of active nematic membranes can reduce to a theory of an isotropic membrane with an active stress defined by the deviatoric part of the shape operator.

Tid og sted: , Room 1249 at Eilert Sundts Hus

Department seminar. Kyle Herkenhoff is a Senior Economist at the Federal Reserve Bank of Minneapolis and an Associate Professor at the University of Minnesota. He will present the paper: "Intergenerational Mobility and Credit" (written with J. Carter Braxton, Nisha Chikhale, and Gordon Phillips).

Tid og sted: , Kristine Bonnevies Hus, Bikuben (Nucleus)

Welcome to seminar by Mikkel Elle Lepper?d (Researcher, Cinpla Group, FYSCELL, IBV).

Tid og sted: , Online webinar

Find out how CoMorMent's research on the links between mental and physical health can be translated into clinical practice at this webinar.

Tid og sted: , NHA107

C*-algebra seminar talk by Roberto Conti (Sapienza University of Rome)

Tid og sted: , Room 1249 at Eilert Sundts Hus

Department seminar. Fernando Stipanicic Márquez is
a Postdoctoral Researcher at Haas School of Business, University of California at Berkeley. He will present the paper: "The Creation and Diffusion of Knowledge: Evidence from the Jet Age" (written with Stefan Pauly).

Tid og sted: , Seminar room Kristine Bonnevie 3508, Kristine Bonnevies hus

By Sara Goodacre from the University of Nottingham, UK

Tid og sted: , PAM2

In this talk, Linn Iren Sj?nes R?dvand presents data from the underdescribed Austronesian language Patani.