The University of Iowa has fired two senior administrators who were singled out for criticism in an outside law firmâ??s investigation of the universityâ??s response to an alleged sexual assault. President Sally Mason had asked the two men â?? Phillip Jones, vice president for student services, and Marcus Mills, vice president for legal affairs and general counsel â?? to resign, and when they declined, she fired them, according to a statement on the universityâ??s Web site.