Ling Ling Pei

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The Nash nonlinear grey Bernoulli model (NNGBM(1,1)) is a flexible grey system model that can be used to forecast nonlinear data. In order to better forecast the fluctuations contained in the original data, a Fourier Nash nonlinear grey Bernoulli model (FNNGBM(1,1)) is proposed in this research. The parameters optimization of FNNGBM(1,1) is formulated as a(More)
Based upon global searches and electronic structure calculations at the B3LYP and CCSD(T) levels, we present the global-minimum structures of two ternary B-O-H and B-S-H rhombic clusters: D2h B2O2H2 (1, (1)Ag) and C2v B2S2H2 (2, (1)A1). Both species feature a B2X2 (X = O or S) four-membered ring as the core, with two H atoms attached terminally. The former(More)
Boron-based heteroatomic rings can have exotic chemical bonding, in which the p lone-pairs of heteroatoms manage to participate in delocalized π bonding, compensating for boron's electron-deficiency. We explore herein the bonding properties of ternary B-N-H systems with a pentagonal ring, using the B3N2H50/-/2- clusters as examples. Computational structural(More)
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