Concerning the period 1990-2004, one can formulate a hypothesis of economic and national industrial cyclical phenomenon of “Juglar” type, with two visible evolution periods, the former of expansion and the latter of recession, and between them, less evident, the crisis and the downward. The...

Contemporary managerial processes are focused on communication and negotiation, where efficiency acquires an essential importance and its variation related to the managerial programme, with its time or space details, respectively related to the effectiveness of management, statistics,...