System refers to a group of things or parts connected in some way so as to form a whole.A system is also, the body, or a number of bodily organs functioning as a unit. Modern thermodynamics teaches that there are three basic kinds of systems: isolated, closed, and open (Çambel, 1993, pp. 41-43). Isolated systems are those which are totally independent of their environment (these exist only in the laboratory). Closed systems are closed to matter (no matter may pass through the boundaries of the system) but are open to energy and information. Open systems are dependent on environment. Matter, energy, and information may pass through the boundaries of open systems.

Siehe auch:
"Systeme" findet sich im WZ2003 Code "72.22.3"
  Applikationsentwicklungen für CAD-Systeme (Softwareentwicklung)

"Systeme" findet sich im UNSPSC Code "25172100"
  Systeme und Komponenten für Fahrzeugsicherheit

"Systeme" findet sich im NACE Code "73"
  Forschung und Entwicklung
  ... Einführung neuer oder die Verbesserung vorhandener Verfahren, Systeme und Dienstleistungen gerichtet ...

See also:
"System" is in the NAICS Code "2371"
  (Utility System ConstructionUtility System Construction)


"System" is in the HS Code "9009"
  Photo-Copying Apparatus Incorporating An Optical System Or Of The Contact Type And Thermo-Copying Ap

"System" is in the CPC Code "733"
  Licensing services for the right to use non-financial intangible assets
  ... this does not constitute a service within the System of National Accounts (SNA). However, granting th ...

Other /More definition:
System refers to a group of things or parts connected in some way so as to form a whole.A system is also, the body, or a number of bodily organs functioning as a unit. Modern thermodynamics teaches that there are three basic kinds of systems: isolated, closed, and open (Cambel, 1993, pp. 41-43). Isolated systems are those which are totally independent of their environment (these exist only in the laboratory). Closed systems are closed to matter (no matter may pass through the boundaries of the system) but are open to energy and information. Open systems are dependent on environment. Matter, energy, and information may pass through the boundaries of open systems.
List of books: System

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