He, Ling-Yun; Fan, Ying; Wei, Yi-Ming - In: International Journal of Global Energy Issues 27 (2007) 4, pp. 492-502
exponents; thus, long-term memory effects are evaluated by these systems. By tracing the evolutionary tracking of H(τ) vs. τ … lengths of non-periodic cycles of the long-term memory. Finally, this paper presents several conclusions and suggestions. …