The Sun's Push

Supramolecular NanoStamping (SuNS)

When a useful device is developed, it always requires a mass-production technique to industrialize it. In the era of nano/biotechnology, the development of printing techniques has not followed the speed of the inventions of novel devices. One of the main challenges is handling at the same time the resolution and the chemical complexity of these nano/biodevices. Here a new stamping technique, Su...

Recursively Arbitrarily Vertex-decomposable Suns

A graph G = (V,E) is arbitrarily vertex decomposable if for any sequence τ of positive integers adding up to |V |, there is a sequence of vertex-disjoint subsets of V whose orders are given by τ , and which induce connected graphs. The aim of this paper is to study the recursive version of this problem on a special class of graphs called suns. This paper is a complement of [O. Baudon, F. Gilber...

Critical Frequencies, Sunspots, and the Suns Ultraviolet Radiation

-Monthly values of el0, the critical frequency relative to the critical frequency at zero sunspots, have been averaged for a number of stations and tabulated for the eleven-year period 1937-47. The variations of el0 for the E-, Fi-, and F2-regions have been correlated with the solar data for sunspot-numbers, bright Ha and Ca floecult, faculae, and the coronal-line intensity. The variations corr...

The EUV Sun as the superposition of elementary Suns

Many studies assume that the solar irradiance in the EUV can be decomposed into different contributions, which makes the modelling of the spectral variability considerably easier. We consider a different approach, in which these contributions are not imposed a priori but are effectively and robustly inferred from spectral irradiance measurements. This is a source separation problem with a posit...

On Strict Suns in ℓ ∞ (3)