H. J. S. N. R.

H. J. S. N. R. stands for Harrison Jones Smith Northrop, a hypothetical or example name representing an individual's initials. It could refer to a person involved in a professional or academic context, or simply serve as an acronym for a specific organization or concept depending on the context. Without additional details, it’s best understood as a set of initials that identify someone or something connected to those three names. If you have a specific field or context where you encountered this term, I can help clarify further.