%0 Journal Article
%T Harvey¡¯s hypercodes and the ¡°Propogram¡± ¨C More than 24 hours per day?
%A Jonathan Gershuny
%J Electronic International Journal of Time Use Research
%D 2009
%I University of Lueneburg
%X In the 1980s, Harvey originated the key concept for the representation of multiple simultaneous activities without violating the constraint of the 24-hourday ¨C the "hypercode". This implements his conceptual innovation in the context of childcare, and suggests a means of graphical representation.
%K Time use
%K childcare
%K multiple simultaneous activities
%U http://www.eijtur.org/pdf/volumes/eIJTUR-6-2.pdf