ibr ational , ▁channel izing ▁and ▁em itting ▁elect romagnet ic ▁mic row ave ▁systems , ▁which ▁became ▁the ▁basis ▁for ▁the ▁design ▁of ▁a ▁wide ▁class ▁of ▁mic row ave ▁systems ▁( mon ograph ▁" A ▁general ization ▁of ▁the ▁theory ▁of ▁ch ains ▁on ▁the ▁wave ▁systems "). ▁He ▁developed ▁the ▁theory ▁of ▁trans verse ▁joint s ▁in ▁wave guide ▁systems , ▁proposed ▁a ▁number ▁of ▁methods ▁for ▁design ▁and ▁analysis ▁of ▁tri ode , ▁t etro de , ▁pent ode , ▁k ly str on , ▁plat in ot ron , ▁magnet ron ▁and ▁re zn at ron ▁ampl ifiers ▁and ▁oscill ators , ▁carried ▁out ▁studies ▁of ▁surface ▁elect romagnet ic ▁waves . ▁In ▁the ▁book ▁" Autom atic ▁processes ▁and ▁phen omena " ▁he ▁proposed ▁a ▁number ▁of ▁original ▁prov isions ▁of ▁the ▁general ▁theory ▁of ▁automatic ▁processes . ▁Also ▁conducted ▁several ▁studies ▁in ▁the ▁field ▁of ▁computer ▁science : ▁expl ored ▁theoretical ▁issues ▁of ▁radi op ulse ▁fast ▁discrete ▁autom ation ▁systems , ▁stated ▁principal ▁consider ations ▁for ▁the ▁autom ation ▁of ▁research , ▁autom ation ▁of ▁programming ▁of ▁ult raf ast ▁computing ▁systems . ▁ ▁In ▁ 1 9 6 4 - 6 5 , ▁Ne iman ▁expressed ▁original ▁ideas ▁and ▁principal ▁consider ations ▁of ▁radical ▁mini atur ization ▁on ▁elements ▁for ▁recording , ▁storing ▁and ▁retr ieving ▁of ▁digital ▁information ▁to ▁the ▁mole cular - atomic ▁level , ▁including ▁the ▁use ▁of ▁bi ological ▁structures ▁of ▁DNA ▁mole cules . ▁Much ▁later ▁the ▁actual ▁use