We are pleased to announce that the following scientists have become Associate Members of SCOR Working Group 145: Dr Regina Easley of the National Institute of Standards and Technology of the USA, Dr Daniela Stoica of the Laboratoire national de métrologie et d’essai, Paris (France); Dr Frank Bastkowski of the Physikalisch-Technische Bundesanstalt (PTB), Braunschweig (Germany);…