Chapter 1: The Multicriteria approach decision.- Chapter 2: The Multi-objective Optimization Problem with Fuzzy Goal Programming.- Chapter 3: Fuzzy Modes and Effects Analysis by using Fuzzy AHP.- Chapter 4: Multicriteria approach to classification systems of control aircraft flight: application Promethee method.- Chapter 5: The multicriteria approach assessment human risks: application the Analytical Hierarchy Process and PROMETHEE methods.