A kairos constellation designates a temporarily existing opportunity for a group of actors to take advantage of a coincidence of favourable circumstances in order to realise a shared target. Starting from the observation that kairos constellations are ubiquitous in human individual and social...

Age structural transition is a process and a consequence of shifting age structure from a young aged population to old aged population. It is well known that economic growth in the East Asian countries was significantly contributed by demographic gift, that is decline in young aged population...