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Università della Svizzera italiana

Essays in empirical finance

Garzoli, Matteo ; Plazzi, Alberto (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021ECO007.

I use empirical methods to forecast U.S. repeat-sales house price indices, to analyze Swiss long-run default rates and to investigate the role of country and industry effects on the downside risk of stock index returns.

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.

Université de Fribourg

Auditor expertise : Evidence from the public sector

Schelker, Mark

In: Economics Letters, 2012, vol. 116, no. 3, p. 432-435

This paper is the first attempt to study the relationship between public auditor expertise and fiscal performance. I find that states requiring the auditor to hold a professional degree feature significantly higher credit ratings and lower expenditures and debt.

Université de Fribourg

The influence of auditor term length and term limits on US state general obligation bond ratings

Schelker, Mark

In: Public Choice, 2012, vol. 150, p. 27-49

Improving transparency and enabling the principal to hold its agents accountable is a major issue in any principal agent relationship. This paper focuses on the role of public auditors in this task and presents evidence on the impact of auditor term length and term limits on government performance measured by state credit ratings at the US State level. I find no clear evidence for the...

Université de Fribourg

Auditors and Corporate Governance : Evidence from the Public Sector

Schelker, Mark

In: KYKLOS, 2013, vol. 66, no. 2, p. 275-300

Corporate auditors review and evaluate financial statements. To enhance independence the selection process and mandatory auditor rotation requirements have been debated intensively. The available empirical evidence is not conclusive and suffers from serious endogeneity problems. We propose learning from the public sector in which auditors play a similar role and present empirical evidence on...

Université de Fribourg

Local Cults and their Integration into Bethlehem's Sacred Landscape in the Late Medieval and Modern Periods

Bacci, Michele

In: Bethlehem. A Sociocultural History, 2020, p. 25-40

The paper is a post-print version of an article originally published in Mitri Raheb (ed.), "Bethlehem. A Sociocultural History", Bethlehem: Diyar Publishers, 2020, p. 25-40, though without the illustrations presented here. It analyses the dynamics by which the kinetic dimension of pilgrimage contributed to invest the landscape associated with the way leading from Jerusalem to Bethlehem with...

Università della Svizzera italiana

Perception-aware computational fabrication : increasing the apparent gamut of digital fabrication

Piovarči, Michal ; Didyk, Piotr (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020INFO015.

Haptic and visual feedback are important for assessing objects' quality and affordance. One of the benefits of additive manufacturing is that it enables the creation of objects with personalized tactile and visual properties. This personalization is realized by the ability to deposit functionally graded materials at microscopic resolution. However, faithfully reproducing real-world objects on a...

Università della Svizzera italiana

Towards spatially varying gloss reproduction for 3D printing

Piovarči, Michal ; Foshey, Michael ; Babaei, Vahid ; Rusinkiewicz, Szymon ; Matusik, Wojciech ; Didyk, Piotr

In: ACM transactions on graphics, 2020, vol. 39, no. 6, p. 13 p

3D printing technology is a powerful tool for manufacturing complex shapes with high-quality textures. Gloss, next to color and shape, is one of the most salient visual aspects of an object. Unfortunately, printing a wide range of spatially-varying gloss properties using state-of-the-art 3D printers is challenging as it relies on geometrical modifications to achieve the desired appearance. A...

Université de Fribourg

Complexity and Algorithms for Finding a Perfect Phylogeny from Mixed Tumor Samples

Hujdurovic, Ademir ; Kacar, Ursula ; Milanic, Martin ; Ries, Bernard ; Tomescu, Alexandru I.

In: IEEE/ACM Transactions on Computational Biology and Bioinformatics, 2018, vol. 15, no. 1, p. 96-108

Hajirasouliha and Raphael (WABI 2014) proposed a model for deconvoluting mixed tumor samples measured from a collection of high-throughput sequencing reads. This is related to understanding tumor evolution and critical cancer mutations. In short, their formulation asks to split each row of a binary matrix so that the resulting matrix corresponds to a perfect phylogeny and has the minimum...

Università della Svizzera italiana

Essays in empirical corporate finance

Yilmaz, Umit ; Plazzi, Alberto (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020ECO006.

I use empirical methods to study the effects of firms' international activities and corporate governance on their operating performance, cost of funding, and credit risk. My studies provide novel evidence on the effects and implications of cross-border borrowing, foreign acquisitions, and governance on firms' financing decision and activities.