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Università della Svizzera italiana

Fuel choices in urban Indian households

Farsi, Mehdi ; Filippini, Massimo ; Pachauri, Shonali

In: Environment and Development Economics, 2007, vol. 12, no. 6, p. 757-774

This paper applies an ordered discrete choice framework to model fuel choices and patterns of cooking fuel use in urban Indian households. The choices considered are for three main cooking fuels: firewood, kerosene and LPG (liquid petroleum gas). The models, estimated using a large microeconomic dataset, show a reasonably good performance in the prediction of households’ primary and secondary...

Università della Svizzera italiana

An empirical evaluation of data flow testing of Java classes

Giovanni Denaro ; Gorla, Alessandra ; Pezzè, Mauro

This paper tackles the problem of structural integration testing of stateful classes. Previous work on structural testing of object-oriented software exploits data flow analysis to derive test requirements for class testing and defines contextual def-use associations to characterize inter-method relations. Non-contextual data flow testing of classes works well for unit testing, but not for...

Università della Svizzera italiana

Optimal atomic broadcast and multicast algorithms for wide area networks

Schiper, Nicolas ; Pedone, Fernando

In this paper, we study the atomic broadcast and multicast problems, two fundamental abstractions for building fault-tolerant systems. As opposed to atomic broadcast, atomic multicast allows messages to be addressed to a subset of the processes in the system, each message possibly being multicast to a different subset. We require atomic multicast algorithms to be genuine, i.e., only processes...

Università della Svizzera italiana

Towards change-aware development tools

Robbes, Romain ; Lanza, Michele

Software development practice still relies on the notion that programming is equivalent to editing text. This view is also supported by mainstream versioning systems, such as CVS and SubVersion, which are excellent at versioning text files. We argue that programming = text editing may have been true years ago, but nowadays we construct complex systems by changing them piecemeal. However, despite...

Università della Svizzera italiana

A robust and lightweight stable leader election service for dynamic systems

Schiper, Nicolas ; Toueg, Sam

We describe the implementation and experimental evaluation of a fault-tolerant leader election service for dynamic systems. Intuitively, distributed applications can use this service to elect and maintain an operational leader for any group of processes which may dynamically change. If the leader of a group crashes, is temporarily disconnected, or voluntarily leaves the group, the service...

Università della Svizzera italiana

Adaptive routing in ad hoc wireless multi-hop networks

Ducatelle, Frederick ; Gambardella, Luca Maria (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2007 ; 2007INFO001.

Ad hoc wireless multi-hop networks (AHWMNs) are communication networks that consist entirely of wireless nodes, placed together in an ad hoc manner, i.e. with minimal prior planning. All nodes have routing capabilities, and forward data packets for other nodes in multi-hop fashion. Nodes can enter or leave the network at any time, and may be mobile, so that the network topology continuously...

Università della Svizzera italiana

Auditing regional wine brands : the Merlot Ticino case

Zamparini, Alessandra ; Lurati, Francesco ; Illia, Laura

Small winemaking regions worldwide face intense competition from global brands; as such, their challenge is to promote brands that tell the unique story of the collectivity of regional wineries in order to achieve a favorable reputation for the regional product. This paper introduces a method to audit the communication of regional wine brands, drawing upon branding and corporate identity...

Università della Svizzera italiana

Making strategy work : a literature review on the factors influencing strategy implementation

Li, Yang ; Guohui, Sun ; Eppler, Martin J.

Although numerous studies acknowledge that strategies frequently fail not because of inadequate strategy formulation, but because of insufficient implementation, strategy implementation has received less research attention than strategy formulation. In this study, we review the factors that enable or impede effective strategy implementation, and survey the state-of-the-art in this domain. We...

Università della Svizzera italiana

I giornali e Internet verso un modello sostenibile = Newspapers and the web towards a sustainable model

Macrì, Piero ; Foa, Marcello ; Fioretti, Natascha

Carta stampata e Web, quotidiani e informazione online. Dopo anni di tentativi per trovare soluzioni compatibili, negli ultimi tempi si assiste a un’evoluzione fondamentale: lo sviluppo un sistema sostenibile in cui le due componenti diventano complementari. In questa ricerca – European Journalism Observatory dell’Università della Svizzera italiana – spiega il modello di business...

Università della Svizzera italiana

Blog e giornalismo : l'era della complementarietà = Blogs and journalism : the age of the complementarities

Faré, Marco ; Foa, Marcello ; Uboldi, Francesco

C’è chi li ama e c’è chi li odia. C’è chi pensa che siano il mezzo di comunicazione del futuro e chi li considera una moda e in quanto,tale transitoria. In realtà i blog sembrano entrati in una nuova fase: quella della complementarietà con i media tradizionali. Il blog rappresenta una porta di accesso al giornalismo. In altri casi favorisce lo sviluppo di nuovi modelli come quello,...