Abstract Fatal landslides occur every year during the rainy season (June–November) in Lower Mekong Region (LMR). There is an urgent need to develop a landslide early warning system LMR. In collaboration with Asian Disasters Preparedness Center and NASA’s SERVIR Programme, we are regionalizing global Landslide Hazard Assessment System for Situational Awareness model LMR (LHASA‐Mekong). A robust ...

We are concerned with the global weak continuity of Cartan structural system—or equivalently, Gauss–Codazzi–Ricci system—on semi-Riemannian manifolds lower regularity. For this purpose, we first formulate and prove a geometric compensated compactness theorem on vector bundles over regularity (Theorem 3.2), extending classical quadratic compactness. then deduce $$L^p$$ system for $$p>2$$ : famil...

We show that a compact feasible set of a standard semi-infinite optimization problem can be approximated arbitrarily well by a level set of a single smooth function with certain regularity properties. This function is constructed as the mollification of the lower level optimal value function. Moreover, we use correspondences between KarushKuhn-Tucker points of the original and the smoothed prob...

In this study, we present a new methodology to automatically classify perturbations in the lower ionosphere using GNSS radio occultation (RO) observations collected Spire’s constellation of CubeSats. This combines signal processing techniques with semi-supervised machine learning by applying spectral clustering metric space wavelet spectra. A “bottom-up” algorithm was applied extract E layer in...

A Banach space operator T ∈ B(X ) is polaroid if points λ ∈ isoσσ(T ) are poles of the resolvent of T . Let σa(T ), σw(T ), σaw(T ), σSF+(T ) and σSF−(T ) denote, respectively, the approximate point, the Weyl, the Weyl essential approximate, the upper semi–Fredholm and lower semi–Fredholm spectrum of T . For A, B and C ∈ B(X ), let MC denote the operator matrix (

Ever since the introduction of fuzzy sets by L. A. Zadeh [14], the fuzzy concept has invaded almost all branches of Mathematics. The concept of fuzzy topological space was introduced and developed by C.L. Chang [3] and since then many fuzzy topologists [1,6-13] have extended various notions in classical topology to fuzzy topological spaces. The concept of somewhat continuous functions was intro...

A subset A of a space X is called regular open if A = IntA, and regular closed if X\A is regular open, or equivalently, if A= IntA. A is called semiopen [16] (resp., preopen [17], semi-preopen [3], b-open [4]) ifA⊂ IntA (resp.,A⊂ IntA,A⊂ IntA ,A⊂ IntA∪ IntA). The concept of a preopen set was introduced in [6] where the term locally dense was used and the concept of a semi-preopen set was introd...