Introduction to Systems Engineering
The international counsil on systems engineering (incose) systems engineering handbook
The systems engineering body of knowledge(sebok)
Iso/iec/ieee 15288:2015
Natinal aeronautics and space administration(Nasa) systems engineering handbook
System
An integrated set of elements, sub-systems, or assemblies that accomplish a defined objective” -appendix c, incose system engineering handbokk- 4th edtion
System boundary
Defines the scope of a system, creating a distinction between the system and the environment, or context, in which a system exists
System architecture
The fundamental concepts or properties of a system in its environment embodied in its elements, relationships, and in the principles of its design and evolution;
Atomic
Unable to be broken down a system
Decomposable
Able to be broken into smaller elements
どこまでシステムを分解するべきか、という問には２つの答えがある。
１つは、そのブロックをブラックボックスとして利用できる状態である。そのシステムの要素を可視的に理解する必要がない時。
もしくは、もうそのシステムを理解する必要がない場合である。それはつまり、自信を持ってシステムを作り、利用できる場合は、システムをこれ以上分解する必要がないと言える。
A system hierarchy
The system life cycle processes are described in relation to a system that is composed of a set of interacting system element, each of which can be implemented to fulfill its respective specified requirement. 15288 standard, section 5.2.2
