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Université de Neuchâtel

Multimodal information retrieval

Geiger, Melanie ; Savoy, Jacques (Dir.) ; Braschler, Martin (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2018.

Knowledge-intensive business processes, one of the essential drivers of our economy today, often rely on multimodal information retrieval systems that have to deal with increasingly complex document collections and queries. The complexity mainly evolves due to a large and diverse range of textual and non-textual modalities such as geographical coordinates, ratings and timestamps used in the...

Université de Neuchâtel

Hydrogen-bonded metalla-assemblies

Zhang, Fan ; Therrien, Bruno (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2018.

Hydrogen bonds are the most utilized non-covalent interactions in biological systems, due to their directionality, stability, reversibility and diversity. The weak strength of hydrogen-bond can be modified by combining several hydrogen bonds in the same unit, like in the melamine∙cyanuric/barbituric acid rosette-type system. Arene ruthenium metalla-assemblies have showed a great biological...

Université de Neuchâtel

Measurement of the linewidth enhancement factor of singlemode room temperature continuous wave quantum cascade lasers

Aellen, Thierry ; Aebi, Philipp (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2008.

The invention of the laser source in 1960 has led to a wide range of applications showing a widespread impact in every aspect of our today life, including for example hospital, factory or simply at home. In particular, recent developments originating from the compact, highly efficient and common semiconductor lasers that are simply supplied by an electrical current. The diode coherent light...

Université de Neuchâtel

Pension fund governance in Switzerland

Bregnard, Nadège ; Salva, Carolina (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2018 ; 2702.

This thesis studies the internal governance of pension funds with evidence from Switzerland. It is composed of four chapters. Chapter 1 describes the current Swiss occupational pension system with a focus on its governance aspects. It documents in details how the various and different Swiss pension funds are organised and identifies six key structure characteristics to classify them. Chapter 2...

Università della Svizzera italiana

Options trading strategies and equity risk premia

Tedeschini, Davide ; Schneider, Paul (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2018 ; 2018ECO010.

This doctoral thesis examines, from both a theoretical and an empirical perspective, different aspects of the equity derivative markets, such as the appropriate evaluation of equity risk premia and the development of trading strategies based on options. In the first chapter, entitled “Approximate arbitrage with limit orders”, I introduce an almost riskless trading scheme involving two...

Université de Fribourg

A Fuzzy-Based User Privacy Framework and Recommender System : Case of a Platform for Political Participation

Kaskina, Aigul ; Meier, Andreas (Dir.)

Thèse de doctorat : Université de Fribourg, 2018 ; no. 2098.

Im Zeitalter der digitalen Gesellschaft werden die digitalen Spuren, die wir tagtäglich in grosser Zahl hinterlassen, zu einem ökonomischen Faktor. Der Einsatz von Big-Data-Methoden, künstlicher Intelligenz, Cognitive Computing usw. machen Daten noch wertvoller, womit sich auch die Risiken für die Privatsphäre laufend erhöhen. Problematisch wird es vor allem dann, wenn der Schutz der...

Université de Fribourg

Combining Work and Home Life Successfully : An Investigation of Antecedents, Processes, and Outcomes

Jensen, Regina ; Klumb, Petra (Dir.)

Thèse de doctorat : Université de Fribourg, 2018.

The challenge of completing an urgent task at work but being at home for dinner is a daily situation for many working adults. They search for an answer to the question how to combine work and home life successfully. This question is highly relevant as a successful integration of several life domains positively affects the well-being and behavior and has important consequences for family members...

Université de Neuchâtel

Object manipulation and tool use in a community of wild chimpanzees ("Pan troglodytes schweinfurthii") of the Budongo Forest, Uganda

Lamon, Noémie ; Zuberbühler, Klaus (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2017.

This thesis examines wild chimpanzee tool use, with a particular focus on the ontogeny of object manipulation, as well as transmission mechanisms and possibility of cultural evolution of tool use in this species. Chimpanzees are known for their tool use proficiency and have been extensively studied regarding these skills. Previous studies on the ontogeny of tool use have focused on the...

Université de Neuchâtel

Oxidative stress as a life history constraint : pespectives from a bat species with alternative reproductive tactics

Meniri, Magali ; Helfenstein, Fabrice (Dir.) ; Fasel, Nicolas (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2018.

In this thesis, I investigated the role of oxidative stress (OS) as a constraint for life history traits, using Seba’s short-tailed bats (Carollia perspicillata) as a model species. In this species, males exhibit three alternative reproductive tactics having unequal pay-offs, and whose acquisition could be impacted by early life conditions. First, I studied the effect of OS as a...