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27 papers · 1 filter
A class of optimal tests for symmetry based on local Edgeworth approximations
Delphine Cassart, Marc Hallin, Davy Paindaveine
The objective of this paper is to provide, for the problem of univariate symmetry (with respect to specified or unspecified location), a concept of optimality, and to construct tes…
Event-Clock Automata: From Theory to Practice
Gilles Geeraerts, Jean-François Raskin, Nathalie Sznajder
Event clock automata (ECA) are a model for timed languages that has been introduced by Alur, Fix and Henzinger as an alternative to timed automata, with better theoretical properti…
Arbitrary-order Hilbert spectral analysis for time series possessing scaling statistics: a comparison study with detrended fluctuation analysis and wavelet leaders
Y. X. Huang, F. G. Schmitt, J. -P. Hermand +3
In this paper we present an extended version of Hilbert-Huang transform, namely arbitrary-order Hilbert spectral analysis, to characterize the scale-invariant properties of a time…
Core-Free, Rank Two Coset Geometries from Edge-Transitive Bipartite Graphs
Julie De Saedeleer, Dimitri Leemans, Mark Mixer +1
It is known that the Levi graph of any rank two coset geometry is an edge-transitive graph, and thus coset geometries can be used to construct many edge transitive graphs. In this…
The close circumstellar environment of Betelgeuse - II. Diffraction-limited spectro-imaging from 7.76 to 19.50 microns with VLT/VISIR
Pierre Kervella, Guy Perrin, Andrea Chiavassa +4
Context: Mass-loss occurring in red supergiants (RSGs) is a major contributor to the enrichment of the interstellar medium in dust and molecules. The physical mechanism of this mas…
Herschel's view into Mira's head
A. Mayer, A. Jorissen, F. Kerschbaum +9
Herschel's PACS instrument observed the environment of the binary system Mira Ceti in the 70 and 160 micron bands. These images reveal bright structures shaped as five broken arcs…