def strip_uri_host_and_path(concept_uri):
    """remotes the host and path from a URI, returning only the final resource name
    """
    if concept_uri is None:
        return None
    rightmost_slash_position = concept_uri.rfind('/')
    rightmost_colon_position = concept_uri.rfind(':')
    simplified_start = max(0, rightmost_slash_position + 1, rightmost_colon_position + 1)
    return concept_uri[simplified_start:]