▁Systems ▁Research . ▁He ▁published ▁his ▁first ▁book , ▁Inst ruction al ▁Systems , ▁in ▁ 1 9 6 8 . ▁ ▁Lar ge ▁complex ▁systems ▁ ▁During ▁the ▁ 1 9 6 0 s ▁and ▁ 1 9 7 0 s , ▁B án á thy ▁was ▁a ▁visit ing ▁professor ▁at ▁the ▁University ▁of ▁California , ▁Ber keley , ▁and ▁as ▁he ▁continued ▁teaching ▁at ▁San ▁Jose ▁State ▁University . ▁In ▁ 1 9 6 9 , ▁he ▁left ▁the ▁renamed ▁Def ense ▁Language ▁Institute ▁and ▁became ▁a ▁Program ▁Director , ▁and ▁later ▁Senior ▁Research ▁Director ▁and ▁Associ ate ▁Labor atory ▁Director , ▁at ▁the ▁Far ▁West ▁Labor atory ▁for ▁Research ▁and ▁Development ▁( now ▁West Ed ) ▁in ▁Ber keley ▁( l ater ▁moved ▁to ▁San ▁Francisco ). ▁He ▁" direct ed ▁over ▁fifty ▁research ▁and ▁development ▁programs , ▁designed ▁many ▁curr icul um ▁projects ▁and ▁several ▁large ▁scale ▁complex ▁systems , ▁including ▁the ▁design ▁and ▁implementation ▁of ▁a ▁Ph . D . ▁program ▁in ▁educational ▁research ▁and ▁development ▁for ▁U C ▁Ber keley ". ▁ ▁In ▁the ▁ 1 9 7 0 s ▁and ▁ 1 9 8 0 s , ▁he ▁focused ▁his ▁research ▁on ▁the ▁application ▁of ▁systems ▁and ▁design ▁theories ▁and ▁method ologies ▁in ▁social , ▁social ▁service , ▁educational , ▁and ▁human ▁development ▁systems . ▁In ▁the ▁ 1 9 8 0 s ▁he ▁developed ▁and ▁gu ided ▁a ▁Ph . D . ▁curr icul um ▁in ▁human istic ▁systems ▁inqu iry ▁and ▁social ▁systems