Title: Global simulations of the interactions between climate and the economy
Speaker: Trude Storelvmo, UiO
his talk discusses a nonparametric inference framework for occupation time curves derived from wearable device data. Such curves provide the total time a subject maintains activity above a given level as a function of that level. Taking advantage of the monotonicity and smoothness properties of these curves, we develop a likelihood ratio approach to construct confidence bands for mean occupation time curves. An extension to fitting concurrent functional regression models is also developed. Application to wearable device data from an ongoing study of an experimental gene therapy for mitochondrial DNA depletion syndrome will be discussed. Based on joint work with Hsin-Wen Chang (Academia Sinica).
Is it difficult to set aside time to write? The Academic Writing Centre organsises structured writing sessions for PhDs and Postdocs.
The frictional behavior of surfaces is a problem of great scientific and practical significance. Recent progress in molecular scale modeling allows us to determine the coefficient of friction for nanoscale surfaces from first principles using molecular dynamics modeling. However, inverse design, that is, designing surfaces with specific frictional propeties is still a complex and largely unsolved challenge in part due to the enormous space of possible surface configurations. Here, we demonstrate how we can use physical forward modeling to find the frictional properties of a set of surfaces that can serve as a training set to design machine learning models. In this talk, we demonstrate both discriminative and generative models for frictional surface design and analyze what physical principles the machine learning models have learned in this process.
Doctoral candidate Anders Brennhagen at the Department of Chemistry, Faculty of Mathematics and Natural Sciences, is defending the thesis "Bi metallates as conversion-alloying anodes for Na-ion batteries" for the degree of Philosophiae Doctor.
Welcome to the annual Earth Biogenome Project-Norway conference. During this conference, you can participate in workshops and learn how to use bioinformatics tools to efficiently analyze and interpret genome sequencing data, in addition to hearing from renowned researchers who will share their work in biodiversity and genomics.
Welcome to the first Norwegian Planetary Health Alliance conference.
Structural equation models are simultaneous equation regression models, whose variables are latent, and measured via a confirmatory factor model (that is, with measurement error and repeated measurements). When the functional form of the simultaneous equation system is unknown, it has previously been observed in simulations that factor scores inputted into non-parametric regression methods approximate the true functional form. Factor scores estimate the latent variables (per person), and several types exist. We provide a theoretical (though population-based) analysis of this procedure, and provide assumptions under which it is theoretically justified in using Bartlett factor scores, which are simple linear transformations of the data. In simulations, we compare this suggestion to an already available though understudied non-linear and computationally heavy procedure, and observe that the simple Bartlett approach appears to work better.
Join us for the first NoRMAS meeting aimed at fostering collaboration and advancing research in the field of astronomy at long wavelengths, i.e infrared, (sub)millimeter and radio.
Doctoral candidate Viktor Balch Barth at the Department of Mathematics will be defending the thesis Endomorphisms of ℙ¹ and 𝔸ⁿ. Motivic homotopy classes and open images for the degree of Philosophiae Doctor .
Jane Luu, Adjunct Professor at Centre for Planetary Habitability (PHAB) and Institute of Theoretical Astrophysics, University of Oslo.
Even Simonsen Håland will defend his thesis "A search for heavy neutral gauge bosons and dark-sector particles with the ATLAS detector" for the degree of Philosophiae Doctor at the University of Oslo, Faculty of Mathematics and Natural Sciences.
Doctoral candidate Emil Herman Frøen at the Department of Chemistry, Faculty of Mathematics and Natural Sciences, is defending the thesis "The synthesis, crystal structure and properties of bichalcogenides" for the degree of Philosophiae Doctor.
Doctoral candidate Stephane Poulain at the Department of Mathematics will be defending the thesis Capillarity, Elastohydrodynamic, and Fluid-Structure Interactions at Small Scales for the degree of Philosophiae Doctor.
Time and again, a product is being developed, approved, and launched, only to flop in the marketplace. So how can you get your ducks in a row to prepare for a successful product, and how early should you start this process?
Title: Tbd
Speaker: Tbd
Abstract: Tropical curves are piecewise linear objects arising as degenerations of algebraic curves. The close connection between algebraic curves and their tropical limits persists when considering moduli. This exhibits certain spaces of tropical curves as the tropicalizations of the moduli spaces of stable curves. It is, however, still unclear which properties of the algebraic moduli spaces of curves are reflected in their tropical counterparts.
In work with Renzo Cavalieri and Hannah Markwig we defined, in a purely tropical way, tropical psi classes in arbitrary genus. They are operational cocycles on a stack of tropical curves, which enjoy several properties that we know from their algebraic ancestors. We also computed two examples in genus one and gave a tropical explanation for the psi class on the moduli space of 1-marked stable genus-1 curves to be 1/24 times a point.
In my talk, I will report on joint work in progress with Renzo Cavalieri, where we explore the missing piece in the story: the link to algebraic geometry. I will explain how to obtain, if we are lucky, a family of tropical curves from a family of algebraic curves. Naturally, there also is a correspondence-type theorem that equates algebraic and tropical intersection products with psi classes, thus showing that the tropical computations done with Cavalieri and Markwig faithfully reflect the algebraic world.
Is it difficult to set aside time to write? The Academic Writing Centre organsises structured writing sessions for PhDs and Postdocs.
Join us for this Open Science Lunch to learn about the work on reforming research assessment in Norway and hear about experiences from implementing the CoARA commitments.
We invite you to the April RoCS Solar/Stellar Lunch. You are invited to discuss your work with colleagues.
Title: Tbd
Speaker: Tbd
In this symposium, experts from various disciplines will illuminate the impacts of polyploidization. Polyploidization is a process in genetics where an organism acquires more than two complete sets of chromosomes.
Registration is appreciated to count potential attendees.
Title: Tbd
Speaker: Tbd