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Università della Svizzera italiana

Essays in institutional investors, market efficiency and the real economy

Tubaldi, Roberto ; Frésard, Laurent (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021ECO004.

My dissertation consists of three chapters, each of which focuses on how institutional investors trade, impact price efficiency in secondary financial markets and influence the allocation of resources in the real economy. Using a novel approach based on hurricanes, the first chapter, Mutual Funds’ Fire Sales and the Real Economy: Evidence from Hurricanes, contributes to the recent debate on...

Università della Svizzera italiana

Exploring, understanding, and promoting pluralistic strategies for (qualitative) research

Hoorani, Bareerah Hafeez ; Gibbert, Michael (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021COM004.

There have been growing calls in the field of management for pluralistic research, primarily because it allows for scientific discovery and advancement. However, despite these calls, the field of management is still homogenous in its research approaches and practices. This motivates the aim of this thesis, which is to explore, understand and promote pluralistic (qualitative) research. The...

Università della Svizzera italiana

Exploring the behavioural base for the Swiss energy transition : The role of attitudes and heterogeneity in the preferences of electricity consumers

Motz, Alessandra ; Maggi, Rico (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021ECO003.

In the context of the international climate change mitigation efforts, several countries have been scaling up their efforts to decarbonize their economies and energy systems. The restructuring of the electricity systems has brought about new challenges, among which the acceptance of the new infrastructures and technologies, and the need of ensuring an optimal level of security of supply. This...

Università della Svizzera italiana

Essays in institutional investors and financial markets

Cötelioglu, Efe ; Plazzi, Alberto (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021ECO002.

I use empirical methods to study the effect of institutional investors on financial markets. My studies provide novel evidence on the commonality in liquidity of fixed-income securities, the liquidity provision of hedge funds and mutual funds in equity markets, and the information diffusion from credit default swaps to equities.

Università della Svizzera italiana

Paiements extérieurs et crises de dette : Vers un nouvel ordre monétaire international? = External payments and debt crises : toward a new international monetary order?

Zio, Adonija ; Bradley, Xavier (Dir.) ; Cencini, Alvaro (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020ECO013.

The sovereign debt crisis is one of the most recurrent crises of the capitalist system. These crises emerge after a strong accumulation of debt by countries. The payment of this debt most often causes internal distortions and financial instability. Studies related to these issues favour the microeconomic approach and explain that the imprudent behaviour of debtors and creditors is at the basis...

Università della Svizzera italiana

Analyzing system performance with probabilistic performance annotations

Rogora, Daniele ; Carzaniga, Antonio (Dir.) ; Soulé, Robert (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020INFO024.

Understanding the performance of software is complicated. For several performance metrics, in addition to the algorithmic complexity, one must also consider the dynamics of running a program within different combinations of hardware and software environments. Such dynamical aspects are not visible from the code alone, and any kind of static analysis falls short. For example, in reality, the...

Università della Svizzera italiana

Approximation algorithms for survivable network design

Jabal Ameli, Afrouz ; Grandoni, Fabrizio (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO005.

Many relevant discrete optimization problems are believed to be hard to solve efficiently (i.e. they cannot be solved in polynomial time unless P=NP). An approximation algorithm is one of the ways to tackle these hard optimization problems. These algorithms have polynomial running time and compute a feasible solution whose value is within a proven factor (approximation factor) of the optimal...

Università della Svizzera italiana

From facet-based to visualised digital library interfaces : an empirical study of user experiences with digital libraries

Barifah, Maram Hassan ; Crestani, Fabio (Dir.) ; Landoni, Monica (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO004.

Digital library (DL) systems in the last decade have provided an unprecedented access to library content that were confined to their physical spaces. The last twenty years of the DL system renovation have witnessed several generations of online catalogs from the Online Public Access Catalogue (OPAC) late 1980s, to the next generation catalog systems (NGC). DL systems are extensively used to...

Università della Svizzera italiana

Predicting failures in complex multi-tier systems

Xin, Rui ; Pezzè, Mauro (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020INFO017.

Complex multi-tier systems are composed of many distributed machines, feature multi-layer architecture and offer different types of services. Shared complex multi-tier systems, such as cloud systems, reduce costs and improves resource utilization efficiency, with a considerable amount of complexity and dynamics that challenge the reliability of the system. The new challenges of complex...

Università della Svizzera italiana

Less is more : efficient hardware design through Approximate Logic Synthesis

Scarabottolo, Ilaria ; Pozzi, Laura (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020INFO023.

As energy efficiency becomes a crucial concern in almost every kind of digital application, Approximate Computing gains popularity as a potential answer to this ever-growing energy quest. Approximate Computing is a design paradigm particularly suited for error- resilient applications, where small losses in accuracy do not represent a significant reduction in the quality of the result. In these...