The present study encompasses a new method to simultaneous analysis, design and optimization of Water Distribution Systems (WDSs). In this method, analysis procedure is carried out using Charged System Search (CSS) optimization algorithm. Besides design and cost optimization of WDSs are performed simultaneous with analysis process using a new objective function in order to satisfying the analys...

A set of quality criteria is proposed to evaluate the performance of genetic algorithms for optimization. Instead of concentrating solely on the best solutions proposed by the algorithm, the quality criteria also consider the repeatability of the optimization and the coverage of the search space. They are tested by using various parameter settings of a genetic algorithm providing starting struc...

Kriging-based optimization methods are of great interest for aerodynamic design optimization where high-fidelity thus timeconsuming computational fluid dynamics (CFD) are used. In the framework of kriging-based optimization, a core technique called sampling infill criteria (also called adaptive sampling) is used both to search the design space and to refine the surrogate models. Among all the i...

iv 1. THE CHALLENGE 1 1.1. The Human Predicament 1 1.2. The Sustainability Notion 2 1.3. The Policy Context 3 2. THE SCENARIO APPROACH 5 2.1. Objectives 5 2.2. System Perspectives and Scenario Criteria 5 2.3. Global Scenarios in Historical Perspective 7 2.4. Methodological Elements 7 3. SCENARIO OVERVIEW 11 4. CRITICAL TRENDS 17 4.1. Population Growth 17 4.2. Economic Growth 18 4.3. Technologic...