2. Method2.1. New methodological frameworkFig. 1 illustrates the conceptual framework developed to assessthe assembly system design and optimization, linking productivitywith ergonomics considerations: it shows all main variables anddecisions involved in the integrated procedure. The procedureproposed consists of three different sections: technological variables,environmental variables, integrated procedure. Technological variables: all variables linked to the product’scharacteristics, to the assembly process, to the industrialmarket and to the space available. Environmental variables: all variables linked to the work forceand its physiological and psychological safety and wellbeing,considering also the psychosocial factors.
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