Systems Engineering
System engineering can best be explained as coordinating multiple tasks within the two disciplines of engineering and engineering management. This paper highlights the systems method of coordinated tasks and its relevance concerning current and future business system life cycles: concept, design, planning, testing, optimization, and deployment. It defines the boundaries necessary for a robust life cycle and analysis to occur.
4. Requirements Types
4.8 Quality
Quality is a measure of how well a system meets expectations. One aspect of quality is a measure of the lack of variability or defects in the design and manufacturing stages of the life cycle. Variability and defects increase the chance that performance will fall outside required levels. Another way to put it is conformance to initial specifications. Wear or defects caused during normal operation are not a quality problem unless they are unexpectedly large. Normal wear would fall under maintenance requirements. Another quality factor is parameters like signal-to-noise ratio and error rates in electronic devices. Noise and quantum effects are natural variations which cannot be eliminated, but a large margin above those variations in effect reduces variability and increases quality.