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Università della Svizzera italiana

A fast direct solver for nonlocal operators in wavelet coordinates

Harbrecht, Helmut ; Multerer, Michael

In: Journal of computational physics, 2021, vol. 428, p. 15 p

In this article, we consider fast direct solvers for nonlocal operators. The pivotal idea is to combine a wavelet representation of the system matrix, yielding a quasi- sparse matrix, with the nested dissection ordering scheme. The latter drastically reduces the fill-in during the factorization of the system matrix by means of a Cholesky decomposition or an LU decomposition, respectively. This...

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

Mapping the unoccupied state dispersions in ${\mathrm{Ta}}_{2}{\mathrm{NiSe}}_{5}$ with resonant inelastic x-ray scattering

Monney, Claude ; Herzog, Marc ; Pulkkinen, Aki ; Huang, Y. ; Pelliciari, Jonathan ; Olalde-Velasco, P. ; Katayama, Naoyuk ; Nohara, Minoru ; Takagi, Hide ; Schmitt, Thorsten ; Mizokawa, Takashi

In: Physical Review B, 2020, vol. 102, no. 8, p. 085148

The transition metal chalcogenide Ta2NiSe5 undergoes a second-order phase transition at Tc=328K involving a small lattice distortion. Below Tc, a band gap at the center of its Brillouin zone increases up to about 0.35 eV. In this work, we study the electronic structure of Ta2NiSe5 in its low-temperature semiconducting phase, using resonant inelastic x-ray scattering (RIXS) at the Ni L3 edge....

Université de Fribourg

Olfactory dysfunction in the pathophysiological continuum of dementia

Bathini, Praveen ; Brai, Emanuele ; Alberi Auber, Lavinia

In: Ageing Research Reviews, 2019, vol. 55, p. 100956

Sensory capacities like smell, taste, hearing, vision decline with aging, but increasing evidence show that sensory dysfunctions are one of the early signs diagnosing the conversion from physiological to pathological brain state. Smell loss represents the best characterized sense in clinical practice and is considered as one of the first preclinical signs of Alzheimer’s and Parkinson’s...

Haute école de gestion de Genève

Disruptive Technology in business innovation : how is the digitalization going to transform jobs in the banking industry in Switzerland?

Stajic, Maja ; Ruiz, Frédéric (Dir.)

Mémoire de bachelor : Haute école de gestion de Genève, 2018 ; TDIBM 46.

Digital transformation has been a popular topic in Swiss banks for many years due to the benefits that it provides to financial institutions, such as improving internal processes and achieving tasks efficiently. Nevertheless, this trend is considerably transforming jobs and the role of the workforce. Switzerland is well-known for its expertise in financial services and its banking industry...

Consortium of Swiss Academic Libraries

Expertise in performance assessment: assessors' perspectives

Berendonk, Christoph ; Stalmeijer, Renée ; Schuwirth, Lambert

In: Advances in Health Sciences Education, 2013, vol. 18, no. 4, p. 559-571

Consortium of Swiss Academic Libraries

Theoretical Methods for Wave Propagation across Jointed Rock Masses

Perino, A. ; Zhu, J. ; Li, J. ; Barla, G. ; Zhao, J.

In: Rock Mechanics and Rock Engineering, 2010, vol. 43, no. 6, p. 799-809

Consortium of Swiss Academic Libraries

Diagnosis and course of affective psychoses: was Kraepelin right?

Angst, Jules ; Gamma, Alex

In: European Archives of Psychiatry and Clinical Neuroscience, 2008, vol. 258, p. 107-110