An RAE cannot be directly converted into an IU without knowing the source(s) of vitamin A. For example, the RDA of 900 mcg RAE for adolescent and adult men is equivalent to 3,000 IU if the food or supplement source is preformed vitamin A (retinol).
Diploma vs Associate Degree. A Diploma is one type of certification, and an Associate degree is another type. Diploma and Associates degree, as the name specifies, are different in many aspects. There is no confusion between the two, as the difference is very specific. A Diploma can be said to be a document awarded to a student after completion of a course.
Masters as well as PGD, both are beneficial after graduation in mechanical engineering. But the difference between a Postgraduate Certificate, a Postgraduate Diploma and a Masters (MA or MSc or MS) is in the amount of credits the course contains. A general masters degree contains a greater number of credits (usually 1.5 times) than a post graduate diploma.