University chiefs were investigating the complaints

Professor Goldstein stepped down from his position as head of the philosophy department at the university while the investigations were underway.

But - eight months later - the college has announced that he decided to resign instead.

Professor Goldstein has insisted his jokes were not offensive.

After the investigation was announced Professor Goldstein said he had decided to tell a couple of jokes but a few in the audience thought these were not appropriate for a Christmas party.

Professor Goldstein also maintained the sexual overtones in the jokes were slight and of the sort which might be heard on television.

An expert in linguistic competence, Professor Goldstein arrived at the university last August after working in Hong Kong and Cape Town.