ABSTRACT

The DC technique has been of significant interest to many researchers, for example, Cheney (1983); Chow et al. (1992); Leonards et al. (1980); Lukas (1995); Menard & Broisey (1975); Feng et al. (2000) and van Impe (1989). Despite significant achievements gained from these research studies, it is still felt that more investigation is required on DC performance.