Mechanism of the electrophilic addition to a series of asymmetric alkenes has been reasonably demonstrated,in terms of Fukui function,local softness,hardness and charge distribution obtained though the ABEEM-σπ model on the basis of local HSAB principle and maximum hardness principle.

Symmetrical invariant transformation of localization length in one-dimensional randomly-perturbed periodic structure;

With renormalization-group method and scattering theory,we study localization length and transmission coefficients of electronic states in a chain.

We generated the long-range correlated random energy sequences with the power-law spectral density s(q)∝q-p in the one-dimensional Anderson disordered chain,and then investigated the localization length by using the transfer matrix method.

Based on the Nagel-Schreckenberg traffic flow model,an improved cellular automaton traffic flow model is developed by introduction of local density and current velocity to control stochastic slowdown probability.

The distribution of local density of states(LDOS) in quasiperiodic photonic crystal(QPC) and the total density of states(DOS) are studied.

the density of states and local density of states of the two-dimensional photonic crystal composed of air cylinders on square lattice are in.

The contents include the following sections:(1)Photonic band gap (PBG) structures of two-dimensional magnetic photonic crystals (MPCs) in square lattice;(2)Guide modes in MPCs heterostructures in two-dimensional square lattices;(3)The density of states and local density of states of two-dimensional photonic crystals composed of circular cylinders in square lattice.

Dispersion and localization of defect state in one-dimensional photonic crystal consisting of metamaterials;