Abstract: Identification of continuous-time non-linear systems characterised by fractional order dynamics is studied. The Riemann-Liouville definition of fractional differentiation is used. A new identification method is proposed through the extension of Hammerstein-type models by allowing their linear part to belong to the class of fractional models. Fractional models are compact and so are us...

In this paper, the numerical method for a multiterm time-fractional reaction–diffusion equation with classical Robin boundary conditions is considered. The full discrete scheme constructed L1-finite difference method, which entails using L1 on graded meshes temporal discretisation of each Caputo fractional derivative and finite uniform spatial discretisation. By dealing carefully, sharp error a...

Nociceptin/orphanin FQ (N/OFQ) peptide and its receptor (NOP) function in the neuromodulation of anxiety, stress and hypothalamic-pituitary-adrenal (HPA) axis activity. We investigated the endogenous NOP system using the selective NOP antagonist, UFP-101, during the HPA axis response to bacterial endotoxin, lipopolysaccharide (LPS). Although i.c.v. N/OFQ (1 microg/rat) had no significant effect...

The contribution of Indonesia's fisheries sector in 2020 dropped by 0.63 percent compared to 2019, which grew 6.24%. This shows that is facing problems, one Illegal Unreported Unregulated Fishing (IUUF). Ministry Maritime Affairs and Fisheries the Republic Indonesia stated state losses due IUUF reached 300 trillion rupiah per year. Efforts prevent have been made controlling fishing management t...

Many studies have widely discussed and reported strong relationship of the concentration of ultrafine particles (UFP) <100 nm in diameter with negative health effects (e.g. Heal et al., 2012; HEI, 2013; WHO, 2013). As an example, epidemiological and toxicological research demonstrated associations between daily average UFP concentrations measured at central locations and daily cardiorespiratory...

We determine the exact minimum `-degree threshold for perfect matchings in kuniform hypergraphs when the corresponding threshold for perfect fractional matchings is significantly less than 12 ( n k−` ) . This extends our previous results that determine the minimum `-degree thresholds for perfect matchings in k-uniform hypergraphs for all ` > k/2 and provides two new (exact) thresholds: (k, `) =...

We study a kind of vector singular perturbed delay-differential equations. By using the methods of boundary function and fractional steps, we construct the formula of asymptotic expansion and confirm the interior layer at t = σ. Meanwhile, on the basis of functional analysis skill, the existence of the smooth solution and the uniform validity of the asymptotic expansion are proved.

We investigate l-designs (regular intersecting families) and graphs of diameter 2. The optimal configurations are either projective planes or design-like structures closely related to finite geometries. The new results presented here are corollaries of a recent improvement about uniform hypergraphs with maximal fractional matchings. We propose several open problems.