Previous events - Page 110

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.

Title: Estimating climate sensitivity in the presence of tipping points

Speaker: Peter Ashwin, University of Exeter

Welcome to our weekly lunch seminar held in the dScience lounge area! This event is open to PhD candidates and postdocs.

Comparing qPCR and eDNA-metabarcoding for detection of elusive lampreys

Biotechnology innovations seem to emerge at lightning speed. At the same time, countless grand societal challenges demand resources and cultural shifts. What does 21st century innovation look like in the context of ongoing crises such as climate change, as well as short-term shocks like covid, macroeconomic constriction, and war in Europe? In such times, big companies shrink their ambitions; what about emerging ventures?

Join the Centre for Digital Life Norway and The Life Science Cluster for a webinar and expert panel discussion on “Innovation in the Age of Disruption. 

Solving Phylogenetic Relationships Within the Rove Beetle Genus /Aleochara/ (Coleoptera: Staphylinidae) by Utilizing a Novel Approach based on High Throughput Sequencing

For millennia, origami and kirigami artists have used folds and cuts to create beautiful shapes from a simple sheet of paper. I will describe our recent scientific attempts to catch up with these remarkably imaginative arts phrased as inverse problems in physical geometry that aim to control the shape and rigidity of a thin surface. Using discrete operations that vary the number, size, orientation and coordination of folds and cuts, I will show how to create piecewise isometric kirigami and origami tessellations and control their local and global morphology and mechanical response, mixing experimental, computational and theoretical approaches.

We are happy to invite to a 3 day-workshop on CNES (the French National Centre for Space Studies) tools, from 21st of March to 23rd of March. The workshop is open to all interested!  

The event is free of charge for members of the CENSSS Consortia, students and representatives from Academia.

For industry partners outside of CENSSS there will be a small fee to cover the expenses of food. 

The workshop will take place at UiO at Gunnar Randers vei 19, 2007 Kjeller.

Coffee and simple lunches will be served.  

Rellie Goddard is a Postdoc in geology and geophysics at The Woods Hole Oceanographic Institution.
 

Hylleraas seminar, hosted in Tromsø

Enriched enumerative geometry is a new area in which we take results in enumerative geometry over the complex numbers and refine them to give results over any base field. The "refinements" in question recover the classical results over algebraically closed fields but may also include arithmetic information about the base field. In this talk, I'll give an overview of a proof of an enriched refinement of the Yau-Zaslow formula for counting rational curves on K3 surfaces. Joint work with Jesse Pajwani.

Welcome to our GEOHYD Lunch Seminar Friday 17th of March @ 12:15 in Aud. 2, Geology building, or via video link using Zoom. The seminar is held by Bo Cao, GEO.

This week we discuss a paper by Mas et al. (2020)

Welcome to our weekly lunch seminar held in the dScience lounge area! This event is open to PhD candidates and postdocs.

Frederik Depta, MPI Heidelberg

_{Weekly Theory Seminar.}

QOMBINE seminar by Eric Bedos (UiO)

Welcome to the dScience Breakfast Club, where we invite you to discuss and talk about dScience's new partner program.

Maria Vetleseter Bøe: We need students to engage in the learning activities that work. However, many students resist active learning activities and believe they learn more from traditional lectures.

We have studied how students’ motivation interacts with different learning activities, using focus group data from Norwegian physics students.

The findings suggest that students develop forms of motivation that promote learning in active learning situations when they feel competent, either through mastery, perceived learning, or comparison with peers, and that relatedness to a community of learners often helps enable development of such motivation.

Sakarias Frette: The standard model is the most accurate theory to date, with incredible precision measurements done at multiple detectors. It has however some shortcommings, not being able to explain phenomena such as the hierarchy problem, gravity, dark matter, etc.. Additional theories have been put forward to try to cover these issues, but for now, it has yielded no luck.

The strategy until recently has been to take such a model, and do a targeted search, resulting in large exclusion plots and no new physics. This is effective and fast for a single model, but very biased, and takes a lot of time if you want to try on 100 og 1000 models.

My thesis will instead try to apply a semi unsupervised technique to separate out anomalous data such that we can reduce the uninteresting SM background and focus on possible new physics that might be hidden in the data. The data analysis model used is an autoencoder.

This coming Friday (March 10th) Simen Kvaal will give a presentation of the DFT research at the Hylleraas Centre.

Alexis Cartwright-Taylor is an Assistant Professor in Geomechanics at Heriot-Watt University 

Welcome to our GEOHYD Lunch Seminar Friday 10th of March @ 12:15 in Aud. 2, Geology building or via videolink using Zoom. The seminar is helt by Frans-Jan Parmentier, MetOs/GEO.

After a brief introduction to the main physical characteristics of tsunami events, the recently developed Iterative Filtering technique is presented and applied to the decomposition of tsunami signals from pressure and tide gauges. It is shown how these signals are successfully decomposed into components of different physical origins. Then, the time-frequency representation of these time series is obtained by using the IMFogram algorithm, which computes instantaneous amplitudes and frequencies for the previously obtained components. Finally, possible applications to tsunami science are discussed, such as possible applications to real time detection in early warning context.