Thèse de doctorat : Université de Fribourg, 2003.
This doctoral thesis deals with the question of how self-images change when people are getting into the age of retirement. Two main issues are addressed regarding the development of personal identities in that life stage: (1) The content of identity: the question if and how retired people have a different way of defining or characterizing themselves than employed people. (2) The age identity...
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Thèse de doctorat : Université de Fribourg, 2002 ; Nr. 1383.
The Siebenhengste region is one of the most significant cave areas in the world. Its high density of cave passages that extend over 1500 m in altitude makes it a key site for the study of Alpine paleogeomorphology and paleoclimatology. The present thesis concentrates on St. Beatus Cave and Bärenschacht at the southern rim of the cave region. The tectonics, hydrogeology, speleogenesis,...
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Thèse de doctorat : Università della Svizzera italiana, 2004 ; 2004ECO006.
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Thèse de doctorat : Université de Fribourg, 2005.
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Thèse de doctorat : Università della Svizzera italiana, 2003 ; 2003ECO002.
The developments of financial theory in the last decades have shown that one of the most fundamental topics in Finance is the specification of dependence between different risk variables. Empirical evidence on financial time series (such as returns, interest rates, or exchange rates) as well as recent developments in risk management (such as the analysis of dependence between default risks of...
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Thèse de doctorat : Université de Fribourg, 2005.
This thesis focuses on two themes: a methodological and a decision making one. The methodological part introduces the development of a computerized information search tool. The program, called WebDiP (Web Decision Processes), enables the researcher to track participants while they are searching for information in a database. An experiment can be done either in the laboratory or on the Web. The...
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Thèse de doctorat : Università della Svizzera italiana, 2003 ; 2003COM004.
Ranging between humanities and technological studies, this dissertation aims at clarifying what happens when literary texts we are used to read in a “book form” are transposed in hypertexts and hypermedia, namely which are the effects of this transposition on the act of reading the literary text. The work is based on an interdisciplinary approach, comprising a semiotic-hermeneutic perspective...
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Thèse de doctorat : Università della Svizzera italiana, 2004 ; 2004ECO005.
In the first part of this work we address the problem of parameter misspecification in a generic class of stochastic volatility models. We extend the approach proposed by Avellaneda, Levy and Paràs (1995) (hereafter ALP) by moving from a framework with uncertain volatility to the uncertainty on volatility process parameters. We assume that parameter values of the stochastic volatility model are...
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Thèse de doctorat : Université de Fribourg, 1999 ; no 1256.
The factors influencing the production and deposition of carbonate sediments are known. These are namely accommodation variations (eustasy and tectonics), siliciclastic sediment input, environmental changes (temperature, salinity, trophic level), nature of the producing ecologies, and the hydrodynamic regime. However, the manner in which these factors integrate through time to produce the...
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Thèse de doctorat : Université de Fribourg : 2004.
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