Tidligere arrangementer - Side 38
I august i fjor ble boka Litteraturkanon i norskfaget - historiske liner, aktuelle utfordringar utgitt i LNU-serien p? Fagbokforlaget. I april presenterer én av forfatterne, Torill Steinfeld, boka for oss p? litter?rt instituttseminar.
Kristin Oxley is a PhD candidate at the Centre for Technology, Innovation and Culture (TIK). This seminar marks her midway evaluation.
Variable selection methods based on L0 penalties have excellent theoretical properties to select sparse models in a high-dimensional setting. There exist modifications of BIC which either control the family wise error rate (mBIC) or the false discovery rate (mBIC2) in terms of which regressors are selected to enter a model. However, the minimization of L0 penalties comprises a mixed integer problem which is known to be NP hard and therefore becomes computationally challenging with increasing numbers of regressor variables. This is one reason why alternatives like the LASSO have become so popular, which involve convex optimization problems which are easier to solve. The last few years have seen some real progress in developing new algorithms to minimize L0 penalties. We will compare the performance of these algorithms in terms of minimizing L0 based selection criteria.
Simulation studies covering a wide range of scenarios which are inspired by genetic association studies are used to compare the values of selection criteria obtained with different algorithms. Additionally some statistical characteristics of the selected models and the runtime of algorithms are compared.
J?rg Rüpke (Erfurt)
Nicolas Poirier, Ph.D. fellow at Rosseland Centre for Solar Physics, University of Oslo.
The first Welcome to the Anthropocene lecture will be led by Dr. Hanna Guttorm, senior researcher at the University of Helsinki, who focuses on Indigenous studies and is a member of Helsinki Institute of Sustainability Sciences.
Welcome to a seminar on Lyme disease and forest tick encephalitis (TBE) for doctors and other health personnel with an interest in tick-borne diseases.
Lecturer Dr. Barbara Siller, University College Cork, will give a talk on “Kafka Tales of the Twenty-First Century – Doors, Walls, and Fences in The Gurugu Pledge (2017) by Juan Tomás ?vila Laurel and Lights in the Distance. Exile and Refuge at the Borders of Europe (2018) by Daniel Trilling”.
Felleskollokvium by Dr. James Catmore, Dept. of Physics, UiO
Filippo Battistoni (Pisa) - Discussant: Ed Bispham (Oxford)
Why do we consume as we do, how is consumption changing, and why do we keep consuming more and more, despite the visible damage we are doing to the planet?
Lecturer: Christa Cuchiero (University of Vienna)
QOMBINE seminar talk by Vebj?rn Hallberg Bakkestuen (UiO)
By Ken A. Thompson from Stanford University, USA
Professor Adam Martin, from Leeds Conservatoire, will speak at RITMO's Seminar Series.
Jér?me Epsztein from Inmed will present his research on neuronal determinants of spatial cognition as part of the NCMM Tuesday Seminar Series.
Talk by Barbara Siller, lecturer in the Department of German and the Programme Director of the MA Applied Linguistics within the School of Languages, Literatures and Cultures at University College Cork.
Department seminar. Rahul Deb is a Professor at University of Toronto Mississauga. He will present the paper: "Which wage distributions are consistent with statistical discrimination?" (written with Ludovic Renou).
Constructing fast solution schemes often involves deciding which errors are acceptable and which approximations can be made for the sake of computational efficiency. Herein, we consider a mixed formulation of Darcy flow in porous media and take the perspective that the physical law of mass conservation is significantly more important than the constitutive relationship, i.e. Darcy's law. From this point of view, we propose an inexact solution technique that nevertheless guarantees local mass conservation. The method is based on first solving the mass balance equation and then computing a solenoidal correction using the curl of a potential field. We extend the method to flows in fractured porous media and present numerical experiments that indicate the efficiency of the scheme.
Azusa Inoue, PhD candidate at Research Center for Nuclear Physics (RCNP), Osaka University, Japan.
By Professor Zaw Wai Soe, Myanmar Union Minister for Health and Education.
Carsten Hjort Lange (Aalborg)
Fano manifolds are complex projective manifolds having positive first Chern class. The positivity condition on the first Chern class has far reaching geometric and arithmetic implications. For instance, Fano manifolds are covered by rational curves, and families of Fano manifolds over one dimensional bases always admit holomorphic sections. In recent years, there has been some effort towards defining suitable higher analogues of the Fano condition. Higher Fano manifolds are expected to enjoy stronger versions of several of the nice properties of Fano manifolds.
In this talk, I will discuss higher Fano manifolds which are defined in terms of positivity of higher Chern characters. After a brief survey of what is currently known, I will present recent joint work with Carolina Araujo, Roya Beheshti, Kelly Jabbusch, Svetlana Makarova, Enrica Mazzon and Nivedita Viswanathan, regarding toric higher Fano manifolds. I will explain a strategy towards proving that projective spaces are the only higher Fano manifolds among smooth projective toric varieties.