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Università della Svizzera italiana

Learning structured neural representations for visual reasoning tasks

van Steenkiste, Sjoerd ; Schmidhuber, Jürgen (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020INFO019.

Deep neural networks learn representations of data to facilitate problem-solving in their respective domains. However, they struggle to acquire a structured representation based on more symbolic entities, which are commonly understood as core abstractions central to human capacity for generalization. This dissertation studies this issue for visual reasoning tasks. Inspired by how humans solve...

Haute école de gestion de Genève

Projet de promotion à la bibliothèque interculturelle du Centre d’intégration culturelle et valorisation de ses collections et de ses activités

Lê, Thi Thu Hien ; Dubosson, Françoise (Dir.)

Mémoire de bachelor : Haute école de gestion de Genève, 2020 ; TDB 2442.

Ce travail de bachelor est réalisé dans le cadre d’un mandat du Centre d’intégration culturelle à Genève et consiste en un projet de promotion du Centre d’intégration culturelle et de valorisation des collections de sa bibliothèque. Il s’agit d’un travail à la fois pratique et théorique concernant les services et les activités de médiation culturelle en bibliothèque...

Université de Fribourg

Superconducting and antiferromagnetic properties of dual-phase V3Ga

Jamer, Michelle E. ; Wilfong, Brandon ; Buchelnikov, Vasiliy D. ; Sokolovskiy, Vladimir V. ; Miroshkina, Olga N. ; Zagrebin, Mikhail A. ; Baigutlin, Danil R. ; Naphy, Jared ; Assaf, Badih A. ; Lewis, Laura H. ; Pulkkinen, Aki ; Barbiellini, Bernardo ; Bansil, Arun ; Heiman, Don

In: Applied Physics Letters, 2020, vol. 117, no. 6, p. 062401

The binary compound V3Ga can exhibit two near-equilibrium phases, the A15 structure that is superconducting and the Heusler D03 structure that is semiconducting and antiferromagnetic. Density functional theory calculations show that these two phases are nearly degenerate, being separated in energy by only ±10 meV/atom. Our magnetization measurements on bulk-grown samples show ...

Haute Ecole d'Ingénierie

Analyse des composés phénoliques dans les vins et dans les extraits de rafle par HPLC-DAD-MS

Lopez, Alexandro ; Kalman Franka (Dir.)

Mémoire de bachelor : Haute Ecole d'Ingénierie, 2019.

L’objectif du projet est d’établir une méthode analytique permettant de quantifier par DAD- FLD et potentiellement MS une partie des flavanols et des proanthocyanidines de type B et C présent dans les extraits de rafles et les vins.

Université de Fribourg

An in vitro lung system to assess the proinflammatory hazard of carbon nanotube aerosols

Barosova, Hana ; Karakocak, Bedia Begum ; Septiadi, Dedy ; Petri-Fink, Alke ; Stone, Vicki ; Rothen-Rutishauser, Barbara

In: International Journal of Molecular Sciences, 2020, vol. 21, no. 15, p. 5335

In vitro three-dimensional (3D) lung cell models have been thoroughly investigated in recent years and provide a reliable tool to assess the hazard associated with nanomaterials (NMs) released into the air. In this study, a 3D lung co-culture model was optimized to assess the hazard potential of multiwalled carbon nanotubes (MWCNTs), which is known to provoke inflammation and fibrosis,...

Université de Fribourg

Multicellular human alveolar model composed of epithelial cells and primary immune cells for hazard assessment

Barosova, Hana ; Drasler, Barbara ; Petri-Fink, Alke ; Rothen-Rutishauser, Barbara

In: JoVE (Journal of Visualized Experiments), 2020, no. 159, p. e61090

A human alveolar cell coculture model is described here for simulation of the alveolar epithelial tissue barrier composed of alveolar epithelial type II cells and two types of immune cells (i.e., human monocyte-derived macrophages [MDMs] and dendritic cells [MDDCs]). A protocol for assembling the multicellular model is provided. Alveolar epithelial cells (A549 cell line) are grown and...

Université de Fribourg

Stereospecific hydrogenolysis of benzylic alcohols over Pd/C

Harvey, Freya M. ; Bochet, Christian G.

In: The Journal of Organic Chemistry, 2020, vol. 85, no. 11, p. 7611–7619

Hydrogenolysis of tertiary benzylic alcohols on palladium on carbon (Pd/C) generally proceeds with inversion of configuration. However, little is known about the hydrogenolysis mechanism of primary and secondary benzylic alcohols. Literature precedents suggest that these substrates may interact differently with the catalyst. To study the mechanism, we synthesized a pair of deuterated...

Université de Neuchâtel

Troubles de la production écrite dans la variante sémantique de l’aphasie primaire progressive : caractérisation des processus altérés et recommandations thérapeutiques = Written language production disorders in semantic variant of primary progressive aphasia: The characterization of altered cognitive processes and treatment recommendations

Dépraz, Audelore ; Fossard, Marion ; d’Honincthun, Peggy

In: Revue de neuropsychologie, neurosciences cognitives et cliniques, 2019, vol. 11, no. 3, p. 188-207

Les troubles de la production écrite de type dysgraphie de surface font partie des critères diagnostiques de la variante sémantique de l’aphasie primaire progressive (APP-s). Cependant, un recensement des études décrivant les différents patterns de difficultés orthographiques des patients APP-s met en évidence que si l’atteinte de la voie d’adressage, dans les modèles séquentiels,...

Université de Neuchâtel

Evolution of the "Castanea sativa" - "Dryocosmus kuriphilus" - "Torymus sinensis" - system in southern Switzerland

Gehring, Eric ; Aebi, Alexandre (Dir.) ; Conedera, Marco (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2019.

The arrival of new organisms that may potentially become harmful for people and ecosystems has become a world-wide daily concern to the point that in Switzerland about 800 established alien species exist, of which at least 107 are considered invasive. A possible way to control such pests is by importing and releasing natural enemies from their countries of origin, letting them to act as so-called...

Université de Fribourg

Laboratory based XAS measurements, electron-induced double K-shell ionization of Sc, Cr and Cu : and, Chemical sensitivity of photoinduced Kʰβ hypersatelite transition in Cr compounds

Zeeshan, Faisal ; Dousse, Jean-Claude (Dir.)

Thèse de doctorat : Université de Fribourg, 2017 ; no. 2052.

The present PhD thesis includes three different projects which belong to the domain of inner-shell atomic physics and high energy resolution X-ray spectroscopy. The first project consists of a series of in-house measurements of the characteristic K and L X-ray absorption spectra (XAS) of several 3d, 4d and 5d transition metals. For this project the target chamber of the von Hamos curved crystal...