TY - BOOK AU - Fawkia Eid Ibrahim Elasser AU - Atef Mohamed Abdelmoneim , TI - Reducing the effect of probabilistic and fuzzy risk / PY - 2011/// CY - Cairo : PB - Fawkia Eid Ibrahim Elasser , KW - Fuzzy numbers KW - Risk analysis KW - Uncertainty N1 - Thesis (Ph.D.) - Cairo University - Institute of Statistical studies and Reasearch - Department of Mathematical Statistics; Issued also as CD N2 - The study presents a system for assessing and managing the risk phenomena particularly under highly uncertain conditions, i.e. where neither the statistical data nor the physical knowledge required for a purely probabilistic risk analysis are sufficient. This insufficient information will affect the calculated risk probabilities with imprecisionwhic ignoring it might lead to an underestimation of the risk ER -