![]() This may include conditions for packaging and storage, as well as preparation for use activities, such as operator training. The system element requirements and the associated verification and validation criteria are inputs to this process these inputs come from the architectural design architectural design process detailed outputs.Įxecution of the implementation process is governed by both industrial and government standards and the terms of all applicable agreements. Developing the supporting documentation for a system requirement, such as the manuals for operation, maintenance, and/or installation, is also a part of the implementation process these artifacts are utilized in the system deployment and use phase. Implementation also involves packaging, handling, and storage, depending on the concerned technologies and where or when the system requirement needs to be integrated into a higher-level aggregate. Conversely, the implementation process may involve some adaptation or adjustments to the system requirement in order to be integrated into a higher-level system or aggregate. ![]() If the decision is made to purchase or reuse an existing system element, it has tomust be identified as a constraint or system requirement applicable to the architecture of the higher-level system. The architectural design has tomust take those constraints into account. While this is a useful model, examining implementation only in terms of process can be limiting.ĭepending on the technologies and systems chosen when a decision is made to produce a system element, the implementation process outcomes may generate constraints to be applied on the architecture of the higher-level system those constraints are normally identified as derived system requirements and added to the set of system requirements applicable to this higher-level system. It is important to understand that these views are process -oriented. These are further supported by the discussion of implementation inputs, outputs, and activities found in the National Aeronautics and Space Association's (NASA's) Systems Engineering Handbook (NASA 2007). Such figures provide a useful overview of the systems engineering systems engineering (SE) community’s perspectives on what is required for implementation and what the general results of implementation may be. Released by the Defense Acquisition University (DAU)/U.S. Context Diagram for the Implementation Process (DAU 2010). Defense Acquisition University (DAU).įigure 2. Figure 2 provides the context for the implementation process from the perspective of the U.S. If subsequent verification and validation (V&V) actions or configuration audits reveal discrepancies, recursive interactions occur, which includes predecessor activities or processes, as required, to mitigate those discrepancies and to modify, repair, or correct the system element in question. A system element will be verified against the detailed description of properties and validated against its requirements. They then fabricate, code, or build each individual element using specified materials, processes, physical or logical arrangements, standards, technologies, and/or information flows outlined in detailed descriptions (drawings or other design documentation). ![]() (SEBoK Original) Process Approach Purpose and Principle of the Approachĭuring the implementation process, engineers apply the design properties and/or requirements allocated to a system element to design and produce a detailed description. Simplification of How the Outputs of System Definition Relate to System Implementation, which Produces the System Elements Required to Produce Systems and Subsystems. Figure 1 portrays how the outputs of system definition relate to system implementation, which produces the implemented (system) elements required to produce aggregates and the SoI.įigure 1. This process bridges the system definition processes and the integration process. The element is constructed employing appropriate technologies and industry practices. The purpose of the implementation process is to design and create (or fabricate) a system element conforming to that element’s design properties and/or requirements. If implementation involves a production process, a manufacturing system which uses the established technical and management processes may be required. Production involves the hardware fabrication processes of forming, removing, joining, and finishing, the software realization processes of coding and testing, or the operational procedures development processes for operators' roles. System elements are made, bought, or reused. Implementation is the process that actually yields the lowest-level system elements in the system hierarchy (system breakdown structure).
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