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Operational research
pharma.	systematische Studie über das Arbeiten eines Systems
operational research
comp.	Operationsforschung f; Betriebsforschung f
market.	Betriebsstudien f; Entscheidungsforschung f; Planungsforschung f; Programmforschung f; Unternehmensforschung f (or, mathematische Methode zur Vorbereitung von Unternehmensentscheidungen); Verfahrensforschung f
med.	systematische Studie über das Arbeiten eines Systems
Operational Research
busin., IT	Operations Research; Unternehmensforschung f; Optimalplanung f
operational research br.
math.	Operations Research
English thesaurus
operational research
USA	The analytical study of military problems undertaken to provide responsible commanders and staff agencies with a scientific basis for decision on action to improve military operations (JP 3-31)

Operational research: 3 phrases in 2 subjects

Economy	2
General	1