SP

Since the advent of modern Single Particle Tracking (SPT) techniques, a large amount of data with great temporal and spatial accuracy has been produced. The emergence of anomalous diffusion has been confirmed by SPT statistics in many biological systems, with sub-diffusive behavior often associated to crowding, confinement phenomena, and strong heterogeneity of the environment. Recent experiments on molecular diffusion within the cell environment permit to distinguish the anomalous behavior caused by active mechanisms, from the one caused by crowding and confinement in the same system. The research of the group aims to develop novel approaches to generate anomalous diffusive behavior by considering the role of heterogeneity.

News frequently report devastations caused by wildfires and at any time they are labelled as the greater since ever. Climate change has an important role in increasing the frequency of record-breaking fire seasons and, in this sense, there is no need to prove the emergencies generated by wildfires and then their timely understanding and managing. Fire may be an essential element of the ecosystem, or an unnatural element to be avoided. In any case, there is no "blame game" to be played because fire is part of the Earth system, and human dimensions of fire regimes are embedded in complex ecological, economic, political, technological and social relationships. Hence, the comprehension of fire requires to consider it a step in the long-term joint-evolution of the humankind and nature, and do not restrict its study to the description of the present conditions. Finally, the importance of fire in nature and the impacts of our decisions on the related issues call for an overcoming of disciplinary and conceptual boundaries that impede our understanding of the complexities of human-fire relationships. The research of the group aims to introduce proper modelling of random phenomena in the propagation of wildfires, as those due to turbulence or fire-spotting, that are implementable in operational wildfire simulators.

Equivalence in distribution of three Centre-of-mass like models for fractional diffusion [from D’Ovidio M., Vitali S., Sposini V., Sliusarenko O., Paradisi P., Castellani G., Pagnini G., Fract. Calc. Appl. Anal. 21, 1420–1435 (2018)]

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