The Ohr Committee is resuming its deliberations and hearings today, investigating the Israeli-Arab riots of last October in which 13 Arabs were killed in clashes with the police. The hearings were stopped two months ago after several incidents of Arab violence during the sessions. A glass partition now divides the witnesses from the audience, which in any event will now be comprised of no more than one member of each Arab family. Other family members will be able to view the proceedings by video in a separate hall.