Existence in the environment of the resources needed by the system.

Availability must be permanent or, at least exist at any moment the system is seeking the resources it needs.

This is a condition of survival for any system, even if the normal input source can be in some cases replaced, at least temporary, by an alternative more or less equivalent source, or by reserves stored within the system itself.

Availability can be affected by variations in the environment, spontaneous or provoked by the system's own action or by competition between various systems.

1) general information

Tag cloud geneated by TagCrowd



comments powered by Disqus
Concepts extracted by AlchemyAPI AlchemyAPI