; (ii) the Director Bureau of Justice Statistics; (iii) the Director of the Office for Victims of Crime; (iv) the Director of the Office of Sex Offender Sentencing, Monitoring, and Tracking; and (v) the Director of the Office of Juvenile Justice and Delinquency Prevention; (B) include senior representatives with a balance of backgrounds, experiences, and viewpoints that will include the expertise of scientific, criminal justice, and juvenile justice professionals; (C) include not fewer than 8 researchers in the field of statistics, evaluation, social sciences, or physical and biological sciences, which may include those researchers recommended by the National Academy of Sciences; (D) be selected to achieve a balance of backgrounds, experiences, and viewpoints that will include the expertise of scientific, criminal justice, and juvenile justice practitioners; and (E) include not less than three-fifths of the members who hold terminal degrees in their field, have published researcher, and are leading research in areas, including— (i) criminology; (ii) criminal justice; (iii) juvenile justice; (iv) tribal justice; (v) statistics; (vi) economics; (vii) sociology; (viii) psychology; (ix) political science; and (x) other relevant sciences. (2) Terms The term of each member appointed under paragraph (1) shall be 4 years. (3) Vacancies Any vacancy in the membership of the Board shall— (A) not affect the powers of the board; (B) be filled in the same manner as the original appointment; and (C) be only for the remainder of the term of the original appointment. (4) Chairperson The Attorney General, with the advice and recommendation of the Assistant Attorney General, shall appoint 1 member of the Science Advisory Board to serve as the Chairperson of the Board. (d) Meetings The Board shall— (1) meet on a regular basis to discuss science, research, and ongoing criminal and juvenile justice departmental activities, including coordination with other Federal, State, local, tribal, territorial, and private sector partners