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Systems Engineering and Analysis
Fifth Edition
Benjamin S. Blanchard
Wolter J. Fabrycky

This book is about systems. It concentrates on the engineering of human-made systems and on systems analysis. In the first case, emphasis is ont he process of bringing systems into being, beginning with the identification of a need and extending through requirements determination, functional analysis and allocation, design synthesis and evaluation, validation, operation and support, and disposal. In the second case, focus is on the improvement of systems already in being. By employing the iterative process of analysis, evaluation, modification, and feedback most systems now in existence can be improved in their effectiveness, product quality, affordability, and stakeholder satisfaction.

Systems engineering may be defined and/or described as a technologically based interdisciplinary process for bringing systems, products, and structures (technical entities) into being. While the main focus is nominally on the entities themselves, systems engineering offers organizations a better strategy. Systems engineering is inherently oriented to considering the end before the beginning and concentrates on what the entities do before determining what the entities are.

Instead of offering systems or system elements and products per se, systems engineering focuses on designing, delivering, and sustaining functionality, a capability, or a solution. This strategic thinking is now being considered by forward-looking organizations in both the private and public sectors. It is applicable to most types of technical systems encompassing the domains of communication, defense, education, healthcare, manufacturing, transportation, and others. The advancement and promulgation of this emerging strategy through education is the primary aim of this textbook.