ISO/IEC/IEEE 21840:2019 システムとソフトウェア工学  —  システムシステム（SoS）のコンテキストでのISO / IEC / IEEE15288の利用に関するガイドライン | ページ 6

3.1.1

capability

measure of capacity and the ability of an entity ( system (3.1.8) , person or organization) to achieve its objectives

[SOURCE:ISO/IEC 19770-1:2017, 3.10, modified — Note 1 to entry has been removed.]

3.1.2

constituent system

independent system (3.1.8) that forms part of a system of systems (SoS) (3.1.10)

Note 1 to entry: Constituent systems can be part of one or more SoS. Each constituent system is a useful system by itself, having its own development, management (3.1.5) , utilization, goals, and resources, but interacts within the SoS to provide the unique capability (3.1.1) of the SoS.

[SOURCE:ISO/IEC/IEEE 21839:2019, 3.1.1]

3.1.3

emergence

principle that entities exhibit properties which are meaningful only when attributed to the whole, not to its parts

Note 1 to entry: These properties cannot be reduced or decomposed back down to the those of any individual constituent system (3.1.2) .

Note 2 to entry: The definition is adapted from Reference [9].

3.1.4

governance

process of establishing and enforcing strategic goals and objectives, organizational policies, and performance parameters

[SOURCE:ISO/IEC 24765:2017, 3.1757, modified — The article"the" at the beginning of the definition has been removed.]

3.1.5

management

system (3.1.8) of controls and processes required to achieve the strategic objectives set by the organization's governing body

Note 1 to entry: Management is subject to the policy guidance and monitoring set through corporate governance (3.1.4) .

[SOURCE:ISO/IEC/IEEE 24765:2017, 3.2338]

3.1.6

satisficing

decision technique that discards any alternative with an attribute value outside an acceptable range

[SOURCE:ISO/IEC/IEEE 24765:2017, 3.3601]

3.1.7

stage

period within the life cycle of an entity that relates to the state of its description or realization

Note 1 to entry: As used in this document, stages relate to major progress and achievement milestones of the entity through its life cycle.

Note 2 to entry: Stages often overlap.

[SOURCE:ISO/IEC/IEEE 15288:2015, 4.1.43, modified — The expression"this International Standard" has been replaced with"this document".]

3.1.8

system

combination of interacting elements organized to achieve one or more stated purposes

[SOURCE:ISO/IEC/IEEE 15288:2015, 4.1.46, modified — Note 1, 2, and 3 to entry have been removed.]

3.1.9

system-of-interest

system (3.1.8) whose life cycle is under consideration

Note 1 to entry: In this document, the system-of-interest is a system of systems (3.1.10) .

[SOURCE:ISO/IEC/IEEE 15288:2015, 4.1.48, modified — The words"in the context of this International Standard" have been removed; Note 1 to entry has been added.]

3.1.10

system of systems

set of systems (3.1.8) and system elements that interact to provide a unique capability (3.1.1) that none of the constituent systems (3.1.2) can accomplish on its own

Note 1 to entry: System elements can be necessary to facilitate interaction of the constituent systems in the system of systems.

[SOURCE:ISO/IEC/IEEE 21839:2019, 3.1.4, modified — The abbreviated term"SoS" has been removed.]

3.1.11

system life cycle

period that begins when a system (3.1.8) is conceived and ends when the system is no longer available for use

[SOURCE:ISO/IEC/IEEE 24765:2017, 3.4108]

3.1.12

taxonomy

scheme that partitions a body of knowledge and defines the relationships among the pieces

[SOURCE:ISO/IEC/IEEE 24765:2017, 3.4167, modified — Note 1 to entry has been removed.]