What is the focus of human systems integration in systems engineering?

Human systems integration (HSI) in systems engineering emphasizes an interdisciplinary technical and management process that ensures the effective interaction between humans and systems. The primary aim of HSI is to enhance system performance by considering human capabilities, limitations, and needs throughout the lifecycle of a system. This includes the design, development, and operation phases, ensuring that human factors are integrated into system requirements and design processes.

By focusing on an interdisciplinary approach, HSI brings together various domains such as ergonomics, psychology, sociology, and engineering, allowing for a comprehensive view of how human operators will interact with the system. This integration is critical for developing systems that are not only effective and efficient but also user-friendly and safe.

The other options do not encompass the core objectives of HSI. For instance, a financial management tool does not relate to the human-centric approach in system design, hardware testing focuses on equipment rather than human interaction, and preserving system components during design changes does not prioritize the human factor within the system's operation.