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Université de Fribourg

Molecular analysis of the arabidopsis-Phytophthora pathosystem

Si-Ammour, Azeddine ; Mauch, Felix (Dir.) ; Métraux, Jean-Pierre (Codir.)

Thèse de doctorat : Université de Fribourg, 2002 ; No 1370.

In order to better understand the Phytophthora-plant interaction, we have developed a new pathosystem: Arabidopsis thaliana-Phytophthora porri. At present, the best studied Phytophthora species is P. infestans which caused the dramatic Irish late blight epidemics 150 years ago. Studying the pathosystem Phytophthora infestans-Solanum tuberosum has certain advantages mainly because potato is an...

Università della Svizzera italiana

E2ML : Educational Environment Modeling Language

Botturi, Luca ; Colombetti, Marco (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2003 ; 2003COM001.

This study moves from the consideration of the communication dynamics within the instructional design practice. With the introduction of electronic media, the design of educational environments in Higher Education has ceased to be a craftsmanship activity, and has acquired some features proper of mass production. This makes communication a more and more critical issue in design. The original goal...

Università della Svizzera italiana

An option pricing formula for the GARCH diffusion model

Ravanelli, Claudia ; Barone-Adesi, Giovanni (Dir.) ; Chesney, Marc (Codir.) ; Vanini, Paolo (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2003 ; 2003ECO001.

In this thesis, we derive an analytical closed-form approximation for European option prices under the GARCH diffusion model, where the price is driven by a geometric process and the variance by an uncorrelated mean reverting geometric process. This result has several important implications. First and foremost, these conditional moments allow us to obtain an analytical closed-form approximation...