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Università della Svizzera italiana

Reframing as an argumentative competence in dispute mediation

Jermini-Martinez Soria, Chiara ; Greco, Sara (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021COM005.

Dispute mediation is a dialogical and communicative process in which a neutral third party, a mediator, helps conflicting parties modifying the way in which they interact with each other so that they become able to co-construct a solution to their conflict that is mutually satisfactory. Mediators cannot impose solutions to the parties, yet they play a fundamental role in conflict resolutions...

Università della Svizzera italiana

Scalable algorithms for high-dimensional graphical lasso and function approximation

Eftekhari, Aryan ; Schenk, Olaf (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO008.

Fundamental tasks in multivariate and numerical analysis, such as sparse precision matrix estimation via graphical lasso and function approximation, are formulated in ever-increasing dimensions. Consequently, this results in a significant increase in the computational demand that quickly renders standard solution methods intractable. With this motivation, we present two scalable algorithms that...

Università della Svizzera italiana

Node-level performance modeling of sparse factorization solver

Janalík, Radim ; Schenk, Olaf (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO006.

Solving large sparse linear systems is at the heart of many application problems arising from scientific and engineering problems. These systems are often solved by direct factorization solvers, especially when the system needs to be solved for multiple right-hand sides or when a high numerical precision is required. Direct solvers are based on matrix factorization, which is then followed by...

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.

Public access from Jun 8, 2023
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...