The conceptual model contains four circular constructs labelled J I T, T Q M, C E P, and Sustainable performance. Six directional arrows are labelled H 1 through H 6. H 1 runs from J I T downward to T Q M. H 2 runs from J I T to C E P. H 3 runs from J I T to Sustainable performance. H 4 runs from T Q M to C E P. H 5 runs from T Q M to Sustainable performance. H 6 runs from C E P to Sustainable performance.