M 2 M.2 (1) (1) • • etc etc… etc… (2) (2) • 3 3 Coleman(1990) • Coleman(1990) • Putnam(1993) (3) (3) • )Putnam et al.(1994) Making Democracy Work: Civic )Putnam et al.(1994) Making Democracy Work: Civic Traditions in Modern Italy Princeton Univ Press( NTT ) ) ) (1998) (4) (4) • )Burt(1992) Structural Holes-The Social Structure of )Burt(1992) Structural Holes The Social Structure of Competition Har