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An experimental comparison of a space-time multigrid method with PFASST for a reaction-diffusion problem

Benedusi, Pietro ; Minion, Michael L. ; Krause, Rolf

In: Computers and mathematics with applications, 2021, vol. 99, p. 162-170

We consider two parallel-in-time approaches applied to a (reaction) diffusion problem, possibly non-linear. In particular, we consider PFASST (Parallel Full Approximation Scheme in Space and Time) and space-time multigrid strategies. For both approaches, we start from an integral formulation of the continuous time dependent problem. Then, a collocation form for PFASST and a discontinuous ...

Learning dynamical systems using dynamical systems : the reservoir computing approach

Verzelli, Pietro ; Alippi, Cesare (Dir.) ; Livi, Lorenzo (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2022 ; 2022INF001.

Dynamical systems have been used to describe a vast range of phenomena, including physical sciences, biology, neurosciences, and economics just to name a few. The development of a mathematical theory for dynamical systems allowed researchers to create precise models of many phenomena, predicting their behaviors with great accuracy. For many challenges of dynamical systems, highly accurate...

Exploring links between culture and biodiversity: studying land use intensity from the plot to the landscape level

Bürgi, Matthias ; Li, Li ; Kizos, Thanasis

In: Biodiversity and Conservation, 2015, vol. 24, no. 13, p. 3285-3303

Are global hotspots of endemic richness shaped by plate tectonics?

Pellissier, Loïc ; Heine, Christian ; Rosauer, Dan F. ; Albouy, Camille

In: Biological Journal of the Linnean Society, 2018, vol. 123, no. 1, p. 247-261

Areas of high conservation value in Georgia: present and future threats by invasive alien plants

Thalmann, Daniela ; Kikodze, David ; Khutsishvili, Manana ; Kharazishvili, David ; Guisan, Antoine ; Broennimann, Olivier ; Müller-Schärer, Heinz

In: Biological Invasions, 2015, vol. 17, no. 4, p. 1041-1054

Center-stable manifold of the ground state in the energy space for the critical wave equation

Krieger, Joachim ; Nakanishi, Kenji ; Schlag, Wilhelm

In: Mathematische Annalen, 2015, vol. 361, no. 1-2, p. 1-50

Quantification of the daily dynamics of streamflow components in a small alpine watershed in Switzerland using end member mixing analysis

Rahman, Kazi ; Besacier-Monbertrand, Anne-Laure ; Castella, Emmanuel ; Lods-Crozet, Brigitte ; Ilg, Christiane ; Beguin, Olga

In: Environmental Earth Sciences, 2015, vol. 74, no. 6, p. 4927-4937

Adaptation of timing of life history traits and population dynamic responses to climate change in spatially structured populations

Pontarp, Mikael ; Johansson, Jacob ; Jonzén, Niclas ; Lundberg, Per

In: Evolutionary Ecology, 2015, vol. 29, no. 4, p. 565-579

Biodiversity effects on grape quality depend on variety and management intensity

Steiner, Magdalena ; Grace, James B. ; Bacher, Sven

In: Journal of Applied Ecology, 2021, p. 1-13

1. Interactions between plants can be beneficial, detrimental or neutral. In agricultural systems, competition between crop and spontaneous vegetation is a major concern. We evaluated the relative support for three non-exclusive ecological hypotheses about interactions between crop and spontaneous plants based on competition, complementarity or facilitation. 2. The study was conducted in...

Economic complexity and international market : How do they matter in the national dynamics?

Maggi, Federica ; Maggi, Rico (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020ECO012.

This thesis contributes to the International Economics by considering how the openness of an economy and the linkages with other countries matter for the local economic growth. The first strength and the fil rouge of this study is the use of the economic complexity as a measure to identify the strategic sectors that generate larger spillovers and benefits to the economy. Secondly, the use of...