ソーシャル・キャピタル
Business 'cluster' is “used to represent concentrations of firms that are able to produce synergy because of their geographic proximity and interdependence” (Rosenfeld, 1997). Steinfield, C. et al. (2010) found, that “the amount of perceived social capital significantly predicted market exposure” of company performance in a knowledge-intensive business cluster. Social capital strengthens regional production networks.