[Process Models] [Usability Maturity Model] [HS Model] [Integration] [Lifecycle]

Lifecycle Considerations

Processes should not be  confused with the stages of a lifecycle. Processes are enacted at more than one  stage in the lifecycle, and it may be useful to think of them as essentially  continuous through the lifecycle. The emphasis between the outcomes of a process will vary depending on the stage at which it is performed. This variation in emphasis will in turn affect the conduct of the practices that comprise the process. The effect of stage and project context on the performance of processes  and practices is one of the main differences between process models and methods/methodologies for system development.

In particular, the life  cycle processes in HFI PRA have a role throughout the system life cycle. At each life cycle stage, it is necessary to look ahead to future stages, and to check that the requirements and constraints generated by previous stages have been met. This is shown in the table below.

Stakeholder

Lifecycle involvement process

HS.1.1
Conception

HS.1.2
Development

HS.1.3
Production and Utilisation

HS.1.4
Utilisation and Support

HS.1.5
Retirement

Conceiver

Needs, Concepts, Feasibility

Consistency, Viability

Consistency, Viability

Consistency, Viability

Consistency, Viability

Developer

Compatibility, Feasibility

Engineering, Solutions, Practicability

Consistency, Viability

Consistency, Viability

Consistency, Viability

Deliverer

Compatibility, Feasibility

Compatibility, Feasibility

Manufacture,
Roll-out,
Installation

Consistency, Viability

Consistency, Viability

User

Compatibility, Feasibility

Compatibility, Feasibility

Compatibility, Feasibility

Operation,
Support,
Validation

Consistency, Viability

Disposer

Compatibility, Feasibility

Compatibility, Feasibility

Compatibility, Feasibility

Compatibility, Feasibility

Reuse
Archiving
Destruction

 

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