) ▁in ▁econom ics ▁from ▁the ▁Federal ▁University ▁of ▁Min as ▁G era is ▁and ▁the ▁Fl umin ense ▁Federal ▁University , ▁the ▁latter ▁of ▁which ▁he ▁was ▁Professor ▁Emer it us . ▁He ▁coordin ated ▁for ▁both ▁the ▁UN ES CO ▁Chair ▁in ▁Cultural ▁Pol ic ies ▁and ▁Co operation ▁and ▁the ▁United ▁Nations ▁University ▁in ▁global ▁economy ▁and ▁sust ain able ▁development . ▁ ▁He ▁was ▁a ▁professor ▁at ▁the ▁Univers ities ▁of ▁Bras ília , ▁Nacional ▁Aut ón oma ▁de ▁México , ▁Northern ▁Illinois , ▁New ▁York ▁State , ▁Catholic ▁University ▁of ▁Min as ▁G era is , ▁Rio ▁de ▁Janeiro , ▁Ben nett ▁Institute ▁of ▁Rio ▁de ▁Janeiro , ▁and ▁Federal ▁University ▁of ▁Min as ▁G era is . ▁ ▁D os ▁Santos ' ▁most ▁notable ▁contributions ▁to ▁the ▁fields ▁of ▁economy ▁and ▁social ▁sciences ▁are ▁his ▁general ▁form ulation ▁of ▁the ▁concept ▁of ▁dependency , ▁the ▁period ization ▁of ▁the ▁many ▁phases ▁of ▁dependency ▁throughout ▁the ▁history ▁of ▁capital istic ▁society , ▁and ▁the ▁character ization ▁of ▁the ▁internal ▁dependent ▁structures ▁and ▁the ▁definition ▁of ▁the ▁re product ive ▁mechan isms ▁of ▁said ▁dependency . ▁He ▁also ▁worked ▁in ▁the ▁Theory ▁of ▁Econom ic ▁Cy cles , ▁the ▁long ▁term ▁dynamics ▁of ▁capital ism , ▁and ▁the ▁world - system s ▁theory . ▁He ▁also ▁form ulated ▁the ▁concept ▁of ▁“ Plan et ary ▁Civil ization ”. ▁ ▁He ▁had ▁author ed ▁ 3 8 ▁books , ▁co - author ed ▁and ▁collabor ated ▁in ▁another ▁ 7