1 Multicriteria Optimization and the Parameter Space Investigation Method -- 1-1. Engineering Optimization Problems: Their Features 1 and Formulation -- 1-2. Systematic Search in Multidimensional Domains by Using Uniformly Distributed Sequences -- 1-3. Parameter Space Investigation (PSI) Method -- 1-4. Example 1: The Choice of the Optimal Design Variables of an Oscillator -- 1-5. Example 2: Automotive Valve Gear Design -- 1-6. Specific Features of the Optimization Problems Formulation Using Finite Element Models -- 2 Approximation of Feasible Solutions and Pareto Optimal Sets -- 2-1. Approximation of a Feasible Solutions Set -- 2-2. The Pareto Optimal Set Approximation -- 2-3. Example of Approximation of a Feasible Solutions Set -- 3 Decomposition and Aggregation of Large-Scale Systems -- 3-1. Decomposition Methods -- 3-2. Construction of Hierarchically Consistent Solutions -- 3-3. Example: The Construction of Consistent Solutions to the Problem of Calculation of a Car for Shock Protection -- 4 Multicriteria Identification of Mathematical Models and Problems of Operational Development -- 4-1. Problems of Multicriteria Identification and Their Features -- 4-2. Parameter Space Investigation Method in Problems of Multicriteria Identification -- 4-3. Example 1: Multicriteria Identification of the Parameters of a Slotter -- 4-4. Operational Development of Prototypes -- 4-5. Example 2: Operational Development of a Vehicle -- 5 Determination of Significant Design Variables -- 5-1. Evaluating Performance Criteria Sensitivity Through Regression Analysis Technique -- 5-2. The Energy Balance Principle for Determining the Dependence of Criteria on Design Variables -- 5-3. Example: Determination of Sensitivity of the Cylindrical Grinding Machine Structure Criteria -- 5-4. Weakly Coupled Oscillatory Systems -- 6 Examples of Multicriteria Optimization of Machines and Other Complex Systems -- 6-1. Vibration Machines Optimization -- 6-2. Truck Frame Design -- 6-3. Optimization of Metal-Cutting Machine Tools -- 6-4. Some Other Problems -- Conclusion -- Addendum Uniformly Distributed Sequences and Nets in Multidimensional Parameter Space -- A-4. Nets with Improved Uniformity Characteristics -- References.