International Journal of Nonlinear Sciences and Numerical Simulation Vol. 8, No.2 2007 CONTENTS Design of Extended Backstepping Sliding Mode Controller for Uncertain Chaotic Systems C.-L. Chen, H.-T. Yau, C. C. Peng-----------------------------------------------------------------------------------------137 Synchronization between Two Different Hyperchaotic Systems J.-W. Feng, C. Xu, J.L.Tang-------------------------------------------------------------------------------------------------147 Variational Iteration Method for Construction of Some Compact and Noncompact Structures of Klein-Gordon Equations E. Yusufoglu-------------------------------------------------------------------------------------------------------------------153 Approximate Solutions of Generalized Pantograph Equations by the Differential Transform Method Y. Keskin, A. Kurnaz, M. E. Kiris, G. Oturanc------------------------------------------------------------------------159 An Optimal Model for Hysteretic Nonlinear Phenomenon in Piezoelectric Actuator via Evolutionary Programming Algorithm H.-T. Yau, J.-J. Yan-----------------------------------------------------------------------------------------------------------165 A Practical Thermodynamic Method to Calculate the Best Glass-forming Composition for Bulk Metallic Glasses H. Wang, H. M. Fu, H. F. Zhang, Z. Q. Hu-------------------------------------------------------------------------------171 Application of Homotopy Perturbation Method to Squeezing Flow of a Newtonian Fluid Q.K. Ghori, M. Ahmed, A.M. Siddiqui------------------------------------------------------------------------------------179 Application of He’s Homotopy Perturbation Method to Sumudu Transform M.A. Rana, A.M. Siddiqui, Q.K. Ghori, R. Qamar----------------------------------------------------------------------185 The cosmic Da Vinci Code for the Big Bang – a Mathematical Toy Model M.S. El Naschie---------------------------------------------------------------------------------------------------------------191 Quantum Probability without a Phase and a Topological Resolution of the Two-slit Experiment M.S. El Naschie ---------------------------------------------------------------------------------------------------------------195 Electrospun Nanoporous Spheres with Chinese Drug L. Xu , J.-H. He, Y. Liu------------------------------------------------------------------------------------------------------199 Approximate Solutions of K (2,2), KdV and Modified KdV Equations by Variational Iteration Method, Homotopy Perturbation Method and Homotopy Analysis Method H. Tari, D. D. Ganji, M. Rostamian----------------------------------------------------------------------------------------203 The Fractal Dimension of the Fractal Model of Dropwise Condensation and Its Experimental Study F.Z. Sun, M. Gao, S.H. Lei, Y. B. Zhao, K.Wang, Y.T. Shi, N.H. Wang-------------------------------------------211 Numerical Approach to Wind Ripple in Desert T.-L. Bo, L. Xie, X.-J. Zheng---------------------------------------------------------------------------------------------223 He’s Homotopy Perturbation Method for Calculating Adomian Polynomials A.Ghorbani, J. Saberi-Nadjafi-----------------------------------------------------------------------------------------------229 On Fixed Point Theorems in Intuitionistic Fuzzy Metric Spaces S. Romaguera, P.Tirado------------------------------------------------------------------------------------------------------233 Traveling Wave Solution of Korteweg-de Vries Equation using He’s Homotopy Perturbation Method T. Öziş, A. Yıldırım-----------------------------------------------------------------------------------------------------------239 A Comparative Study of He’s Homotopy Perturbation Method for Determining Frequency-amplitude Relation of a Nonlinear Oscillator with Discontinuities T. Öziş, A. Yıldırım-----------------------------------------------------------------------------------------------------------243 Numerical Simulation of Chua’s Circuit Oriented to Circuit Synthesis E. Tlelo-Cuautle, J.-M. Muñoz-Pacheco----------------------------------------------------------------------------------249 A Constitutive Formulation of Arbitrary Fiber-Reinforced Viscoelastic Pieoelectric Compsite Materials-I M. R. Usal----------------------------------------------------------------------------------------------------------------------257 A Constitutive Formulation of Arbitrary Fiber-Reinforced Viscoelastic Pieoelectric Compsite Materials-II M. R. Usal----------------------------------------------------------------------------------------------------------------------275