FRANÇOIS GRAFFIN, S.J. (1905– 2002)

[Pierre Petit (1905-2002), pioneer of pediatric surgery and academic in spite of himself].

Initially a general surgeon for children, like his predecessors such as Louis Ombredanne, Pierre Petit devoted all his time to his young patients in Saint Raphael Clinic and Saint Vincent de Paul Hospital where, in 1943, he succeeded Victor Veau, famous specialist of hare lip surgery. Each of the children who entered his hospital was his own patient. He did everything by himself, especially whe...

19 April 2013 − − François

Assignment 3 François Séguin

Question 1 First, we have that λ − λ − 2 = (λ + 1)(λ − 2). Therefore, it is true that the eigenvalues of the corresponding adjacency matrix come in pairs of additive inverse. However, notice that ± √ −1 are eigenvalues, and therefore the associated matrix cannot be symmetric (there would only be real eigenvalues). We conclude that no undirected graph can have the above characteristic polynomial...

The Planck mission François

These lecture notes discuss some aspects of the Planck1 mission, whose prime objective was a very accurate measurement of the temperature anisotropies of the Cosmic Microwave Background (CMB). We announced our findings a few months ago, on March 21st , 2013. I describe some of the relevant steps we took to obtain these results, sketching the measurement process, how we processed the data to obt...

Microsoft Word - ITWSA_gensips2008_huang2-SJ

An algorithm for the discovery of time varying modules using genome-wide expression data is presented here. When applied to large-scale time serious data, our method is designed to discover not only the transcription modules but also their timing information, which is rarely annotated by the existing approaches. Rather than assuming commonly defined time constant transcription modules, a module...