business charities economics entscheidungsfindung management ngos(non-governmentalorganizations) nonprofitorganizations organizationalbehavior organizationaldevelopment politicalscience problemlösen publicpolicy sci064000bus041000pol029000bus103000bus085000bus074000pol041000 science socialchange socialpolicy sozialarbeit sozialeinrichtung sozialpolitik strategischeplanung systemtheory