Thèse de doctorat : Université de Fribourg, 2007.
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Thèse de doctorat : Università della Svizzera italiana, 2006 ; 2006ECO002.
This work deals with the economic dimension of two multi-disciplinary phenomena: innovation and the absence of agglomeration. Their common scientific field is certainly expressed by the so-called regional economy, which joins the economic science with other non economic disciplines such as geography, sociology and institutionalism. While the literature about agglomeration's positive effects on...
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Thèse de doctorat : Università della Svizzera italiana, 2019 ; 2019INFO008.
The main goal of a static type system is to prevent certain kinds of errors from happening at run time. A type system is formulated as a set of constraints that gives any expression or term in a program a well-defined type. Besides detecting these kinds of errors, a static type system can be an invaluable maintenance tool, can be useful for documentation purposes, and can aid in generating ...
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Thèse de doctorat : Università della Svizzera italiana, 2010.
The subject of the study are telecentres, public places where people can access information through ICT, and which should fulfill the communication needs of the communities in which they are located. The central question of this thesis sprang from the study of the available literature and from nine exploratory field studies carried out in West Africa (in Burkina Faso, Benin, Guinea and...
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Thèse de doctorat : Université de Fribourg : 2002.
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Thèse de doctorat : Università della Svizzera italiana, 2005.
The quality of web sites (or more in general interactive applications) may be improved taking into account the activity of usability evaluation, in which the quality for the endusers is defined and established. One of the most serious problems related to usability field is that usability evaluation methods often were not defined to be effectively reused by the people who did not invent them. The...
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Thèse de doctorat : Université de Fribourg, 2007.
The research stream on Website quality has evolved in recent years. Although several research issues have been addressed, there remain gaps in literature about the facilitators of Website as a brand. Therefore, the general purpose of this study is to identify, describe and analyze factors that have had an impact on customer awareness and loyalty to a Website. Based on the literature review, a...
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Thèse de doctorat : Université de Fribourg, 2012.
Im Internetzeitalter ist der Webauftritt eines Unternehmens ein unverzichtbares Instrument der Information, Kommunikation und Transaktion geworden. Mit der stark steigenden Nutzung und der Abwicklung des Geschäfts über das Internet wird die Analyse und das Controlling der Website-Nutzung und des elektronischen Geschäfts – das Web Analytics – für Website-Betreiber eine wichtige Aufgabe....
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Thèse de doctorat : Università della Svizzera italiana, 2005 ; 2005ECO001.
The main objective of the thesis is to find a pricing model for weather derivatives based on temperature. A general Ornstein-Uhlenbeck process with seasonal mean and volatility is proposed to model the time-dynamics of daily average temperatures. The model is fitted to almost 54 years of daily observations recorded in Chicago, Philadelphia, Portland and Tucson. The unequivocal evidence of fat...
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Thèse de doctorat : Université de Fribourg : 2002 ; 1374.
Les systèmes électroniques bidimensionnels sont d’une grande actualité tout particulièrement depuis la découverte de la supraconductivité à haute température. Ici, on se restreint à l’étude d’un modèle de Hubbard étendu, à la limite d’un couplage faible. En général, le gaz électronique subit une instabilité supraconductrice même sans phonons. Cependant, dans le cas...
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