A non standard finite difference model for a class of renewal equations in epidemiology
Mathematical models based on non-linear integral and integro-differential equations are gaining
increasing attention in mathematical epidemiology due to their ability to incorporate the past
infection dynamic into its current development. This property is particularly suitable to represent
the evolution of diseases where the dependence of infectivity on the time since becoming
infected plays a crucial role.
AMG Preconditioners based on Parallel Hybrid Coarsening and Multi-objective Graph Matching
We describe preliminary results from a multiobjective
graph matching algorithm, in the coarsening step of an
aggregation-based Algebraic MultiGrid (AMG) preconditioner,
for solving large and sparse linear systems of equations on highend
parallel computers. We have two objectives. First, we wish
to improve the convergence behavior of the AMG method when
applied to highly anisotropic problems. Second, we wish to extend
the parallel package PSCToolkit to exploit multi-threaded
parallelism at the node level on multi-core processors.
Host-Microbiome Synergistic Control on Sphingolipid Metabolism by Mechanotransduction in Model Arthritis
Chronic inflammatory autoimmune disorders are systemic diseases with increasing incidence and still lack a cure. More recently, attention has been placed in understanding gastrointestinal (GI) dysbiosis and, although important progress has been made in this area, it is currently unclear to what extent microbiome manipulation can be used in the treatment of autoimmune disorders. Via the use of appropriate models, rheumatoid arthritis (RA), a well-known exemplar of such pathologies, can be exploited to shed light on the currently overlooked effects of existing therapies on the GI microbiome.
PRISMA L1 and L2 Performances within the PRISCAV Project: The Pignola Test Site in Southern Italy
In March 2019, the PRISMA (PRecursore IperSpettrale della Missione Applicativa) hyper-spectral satellite was launched by the Italian Space Agency (ASI), and it is currently operational on a global basis. The mission includes the hyperspectral imager PRISMA working in the 400-2500 nm spectral range with 237 bands and a panchromatic (PAN) camera (400-750 nm). This paper presents an evaluation of the PRISMA top-of-atmosphere (TOA) L1 products using different in situ measurements acquired over a fragmented rural area in Southern Italy (Pignola) between October 2019 and July 2021.
