This practical introduction to systems engineering and analysis provides the concepts, methodologies, models, and tools needed to understand and implement a total life-cycle approach to systems and their analysis. The authors focus first on the process of bringing systems into being--beginning with the identification of a need and extending that need through requirements determination, functional analysis and allocation, design synthesis, evaluation, and validation, operation and support, phase-out, and disposal. Next, the authors discuss the improvement of systems currently in being, showing that by employing the iterative process of analysis, evaluation, feedback, and modification, most systems in existence can be improved in their affordability, effectiveness, and stakeholder satisfaction. Bringing Systems Into Being; Conceptual Design; Design For Supportability; Design For Affordability - Life-Cycle Costing. Includes new and revised figures throughout, and several new case studies. For the systems engineering practitioner working in industry and/or in a government agency. Contents Ch. 1: Systems Science and Engineering Ch. 2: Bringing Systems Into Being Ch. 3: Conceptual System Design Ch. 4: Preliminary System Design Ch. 5: Detail Design and Development Ch. 6: System Test, Evaluation, and Validation Ch. 7: Alternatives and Models in Decision Making Ch. 8: Models for Economic Evaluation Ch. 9: Optimization in Design and Operations Ch. 10: Queuing Theory and Analysis Ch. 11: Control Concepts and Methods Ch. 12: Design for Reliability Ch. 13: Design for Maintainability Ch. 14: Design For Usability (Human Factors) Ch. 15: Design for Logistics and Supportability Ch. 16: Design for Producibility, Disposability, and Sustainability Ch. 17: Design for Affordability (Life-cycle Costing) Ch. 18: Systems Engineering Planning and Organization Ch. 19: Program Management, Control, and Evaluation