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Università della Svizzera italiana

Voronoi diagrams in the max-norm : algorithms, implementation, and applications

Dey, Sandeep Kumar ; Papadopoulou, Evanthia (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2015 ; 2015INFO007.

Voronoi diagrams and their numerous variants are well-established objects in computational geometry. They have proven to be extremely useful to tackle geometric problems in various domains such as VLSI CAD, Computer Graphics, Pattern Recognition, Information Retrieval, etc. In this dissertation, we study generalized Voronoi diagram of line segments as motivated by applications in VLSI Computer...

Università della Svizzera italiana

Wage differential of a trans–border labor market, a quantitative analysis

Gonzalez, Oscar ; Maggi, Rico (Dir.) ; Gagliardini, Patrick (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2007 ; 2007ECO004.

The location of Switzerland in the center of Europe without being member of the European Union implies that wages can be greatly influenced by trans-border labor markets which are of different relevance for various regions. Moreover, since 1st June 2002 the Swiss labor market is experiencing a transition period where the Free Movement of Persons between Switzerland and the European Union member...

Università della Svizzera italiana

The weather derivatives market : modelling and pricing temperature

Bellini, Francesca ; Barone-Adesi, Giovanni (Dir.)

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...

Università della Svizzera italiana

Weathering the global financial crisis : Is direct democracy of any help?

Jametti, Mario

The global financial crisis and the European debt crisis have loomed large over the globe, with severe consequences on government finances in many countries. Switzerland has fared relatively well throughout this crisis. In this paper, surveying a selection of empirical research on Switzerland, we argue that direct democracy might be one (but not the only) reason why Switzerland has weathered...

Università della Svizzera italiana

Web usability : enhancing effectiveness of methodologies and improving their communication features

Triacca, Luca ; Paolini, Paolo (Dir.)

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...

Università della Svizzera italiana

What do local people think about telecentres? A key issue for sustainability

Rega, Isabella ; Poglia, Edo (Dir.)

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...

Università della Svizzera italiana

What drives the rise of antidepressant consumption? Evidence from Switzerland

Masiero, Giuliano ; Mazzonna, Fabrizio ; Verbeek, Olaf

Antidepressant (AD) consumption has been steadily increasing in the last decade in most countries. The explanations suggested by researchers for this increment are still under scrutiny. This study attempts to identify the determinants of AD consumption by exploiting small area variations from Switzerland between 2003 and 2014. We observe that two specific drugs - Citalopram and Escitalopram -...

Università della Svizzera italiana

What drives the substitutability between native and foreign workers? : evidence about the role of language

Gentili, Elena ; Mazzonna, Fabrizio

This paper investigates the role of language in determining the degree of substitutability between foreign and native workers. To this end, we focus on Switzerland, an immigration-receiving country with four official languages spoken, three of which in common with bordering countries. We modify the model proposed by Ottaviano and Peri (2012) to account for the linguistic background of native...

Università della Svizzera italiana

What future for the international and the European monetary systems?

Cencini, Alvaro

The process of globalization affecting goods and financial markets together with the increase in capital mobility have led economists to reconsider the problem of exchange rates. The aim of this paper is to consider the ‘soft’ peg and the ‘hard’ peg exchange rates solutions in order to show: 1. that each of them entails serious drawbacks for the countries implementing it; and 2. that...

Università della Svizzera italiana

When and how java developers give up static type safety

Mastrangelo, Luis ; Hauswirth, Matthias (Dir.) ; Nystrom, Nathaniel (Dir.)

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 ...