In this study, commodity indices are constructed using principal components analysis to represent the market returns for day and night trading in the Chinese commodity futures market. Then VAR models are employed to predict the commodity indices' returns and squared returns. The symmetric VAR...

High coercivity SmCo 5 hard phase was used as precursors for hard phase and SmCo 5 /FeCo dual-phase nanocomposite powders had been successfully fabricated by chemical coating high magnetization FeCo soft phase on the surface of hard phase. The effect of different addition amounts of FeCo on the...

Dielectric capacitors show great potential in superior energy storage devices. But the energy density of these capacitors still inadequate for the requirement of energy storage applications. Herein, the Bi0.5Na0.47Li0.03TiO3 -xNaNbO3 (BNLT-xNN) ceramics were prepared via conventional solid phase...

Although China's marine industry has made great progress under the promotion of the "Belt and Road" initiative, the deep-sea strategy, and the strategy of marine power. However, there are still shortcomings with unreasonable industrial structure and insufficient innovation capabilities in the...