Supporting flexible regulation of crisismanagement by means of situated artificial institution<FootNote> Project supported by CAPES-PDSE (No. 4926145), CNPq (Nos. 448462/2014-1 and 306301/2012-1) and ARC 6 Region Rh?ne-Alpes (No. ARC-13-009716-01) </FootNote><FootNote> A preliminary version was presented at the 13th International Conference on Practical Applications of Agents and Multi-Agent Systems, June 3–4, 2015, Spain </FootNote>