We consider the evolution of small amplitude, long wavelength initial data by a polyatomic Fermi–Pasta–Ulam lattice differential equation whose material properties vary periodically. Using the methods of homogenization theory, we prove rigorous estimates that show that the solution breaks up into the linear superposition of two appropriately scaled and modulated counterpropagating waves, each o...

The problem of the existence of a Strong Stochasticity Threshold in the FPU-β model is reconsidered, using suitable microcanonical observables of thermodynamic nature, like the temperature and the specific heat. Explicit expressions for these observables are obtained by exploiting rigorous methods of differential geometry. Measurements of the corresponding temporal autocorrelation functions loc...

Modern embedded systems are in charge of an increasing number tasks that extensively employ floating-point (FP) computations. The ever-increasing efficiency requirement, coupled with the additional computational effort to perform FP computations, motivates several microarchitectural optimizations FPU. This manuscript presents a novel modular FPU microarchitecture, which targets modern and consi...

We report recent results obtained with a novel optical fiber experimental setup based on heterodyne time-domain reflectometer in the context of FPU recurrence process. Moreover, we actively compensate dissipation system. show that can observe several recurrences by monitoring power and relative phase evolutions main discrete frequency components involved

The slowdown of Moore's law and the power wall necessitates a shift toward finely tunable precision (a.k.a. transprecision) computing to reduce energy footprint. Hence, we need circuits capable performing floating-point operations on wide range precisions with high proportionality. We present FPnew, highly configurable open-source transprecision unit (TP-FPU), supporting standard custom FP form...

Abstract Banana production generates significant amounts of agricultural wastes, being fiber extraction one the most relevant alternatives for their valorization. This process produces banana’s pseudostem pulp (BPP) as a byproduct, which shows an interesting composition biorefinery’s biochemical platform, with high polysaccharides (68%) and low lignin contents. work deals enzymatic hydrolysis (...

Purpose This study aims to investigate the dynamic interconnectedness of economic policy uncertainty (EPU), fiscal (FPU) and monetary (MPU) in four nations, USA, Japan, Greece South Korea, between 1998 2021. Design/methodology/approach To comprehend cross-category/cross-country evolution connectedness, authors use conditional connectedness approach. By using an inclusive network, this strategy ...