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She indicated that central would like to have an integrated campus response to the proposed policy , including recommended changes by the end of the calendar year . Emphasis upon the ways that Islamic teachings and practices have interacted with , changed , and been changed by various cultures in Asia , Africa , Europe , and more recently North America . The study must be viewed in light of the war , the attempted changes by the Diem govt . At first , astronomers tracked changes by using the naked eye ; later , they used the optical aid of telescopes ( Williams 1997 ) .