<prompt> Yakha inguqulo eyinkimbinkimbi yalesi sigwebo ULeopold Henri Haimson ? - present uyisazi-mlando noprofesa osethathe umhlalaphansi waseColumbia University.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yomusho ithi uLeopold Henri Haimson uyisazi-mlando noprofesa ohloniphekile waseColumbia University, lapho asebenza khona kusukela ngo-1965 njengoprofesa womlando waseRussia kanye nelungu le-Russian Institute. 