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Università della Svizzera italiana

Justifying age thresholds for mammographic screening: an application of pragma-dialectical argumentation theory

Schulz, Peter J. ; Meuffels, Bert

In: Health Communication, 2012, vol. 2, no. 2012, p. 167-178

Information campaigns on breast cancer screening in the Netherlands need to convince women above 50 years of age to have biannual mammography, and women below 50 years of age that regular mammograms are not recommended for them. This article reports the results of two experiments in which the construction of the persuasive messages was informed by argumentation-theoretical insights. No...

Università della Svizzera italiana

The parallel event loop model and runtime : a parallel programming model and runtime system for safe event-based parallel programming

Bonetta, Daniele ; Pautasso, Cesare (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2014 ; 2014INFO017.

Recent trends in programming models for server-side development have shown an increasing popularity of event-based single- threaded programming models based on the combination of dynamic languages such as JavaScript and event-based runtime systems for asynchronous I/O management such as Node.JS. Reasons for the success of such models are the simplicity of the single-threaded event-based...

Università della Svizzera italiana

Exploring and experimenting cooperative design

Salomão, David ; Cantoni, Lorenzo

In: Lecture notes in computer science Volume 9186, 2015, pp 149-156, 2015, vol. 9186, p. 149-156

This paper describes a community co-design approach performed in rural Mozambique. It discusses the experiences and experiments performed in a community multimedia center towards creating services with inherent values for daily community activities. The design approach pursues a holistic interpretation of community needs, and discusses emerging, new and creative applications for future community...

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

If you don’t snooze you lose health and gain weight : evidence from a regression discontinuity design

Giuntella, Osea ; Mazzonna, Fabrizio

Sleep deprivation is increasingly recognized as a public health challenge. While several studies provided evidence of important associations between sleep deprivation and health outcomes, it is less clear whether sleep deprivation is a cause or a marker of poor health. This paper studies the causal effects of sleep on health status and obesity exploiting the relationship between sunset light and...

Università della Svizzera italiana

Competitive tendering versus performance-based negotiation in Swiss public transport

Filippini, Massimo ; Koller, Martin ; Masiero, Giuliano

The purpose of this study is to assess differences in the levels of cost efficiency of bus lines operated under competitively tendered contracts and performance-based negotiated contracts. Following the revision of the Swiss railways act in 1996, regional public authorities were given the choice between two different contractual regimes to procure public passenger transport services. We...

Università della Svizzera italiana

Three essays on fiscal federalism and market structure

Redonda, Agustin ; Jametti, Mario (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2015 ; 2015ECO004.

This thesis assesses two different sub-fields inside public economics in general and taxation in particular: tax incidence and tax competition. The first chapter analyzes the incidence of taxes in the Canadian retail gasoline market by devising a novel empirical test, based on observables, to assess whether taxes are under- or overshifted in an oligopolistic market. The results show that...

Università della Svizzera italiana

Local time stepping on high performance computing architectures : mitigating CFL bottlenecks for large-scale wave propagation

Rietmann, Max ; Schenk, Olaf (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2015 ; 2015INFO006.

Modeling problems that require the simulation of hyperbolic PDEs (wave equations) on large heterogeneous domains have potentially many bottlenecks. We attack this problem through two techniques: the massively parallel capabilities of graphics processors (GPUs) and local time stepping (LTS) to mitigate any CFL bottlenecks on a multiscale mesh. Many modern supercomputing centers are installing...

Università della Svizzera italiana

Resource management of replicated service systems provisioned in the cloud

Björkqvist, Mathias ; Binder, Walter (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2015 ; 2015INFO005.

Service providers seek scalable and cost-effective cloud solutions for hosting their applications. Despite significant recent advances facilitating the deployment and management of services on cloud platforms, a number of challenges still remain. Service providers are confronted with time-varying requests for the provided applications, inter- dependencies between different components,...

Università della Svizzera italiana

High performance deferred update replication

Sciascia, Daniele ; Pedone, Fernando (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2015 ; 2015INFO004.

Replication is a well-known approach to implementing storage systems that can tolerate failures. Replicated storage systems are designed such that the state of the system is kept at several replicas. A replication protocol ensures that the failure of a replica is masked by the rest of the system, in a way that is transparent to its users. Replicated storage systems are among the most...