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With the rise and development of e-commerce, a huge impact is given on traditional retailing. Nowadays the retailing e-commerce competition is very fierce. In this paper nine possible developing directions of retailing e-commerce in future are discussed. By using interpretative structural modeling the direct correlation of these nine directions is analyzed, and then the development trend is divided into five stages involved the stage of mobile e-commerce retailing.
TCSC (Thyristor-Controlled Series Compensator)
has been used in modern power systems to increase power transfer and system stability.
Besides, due to its controllable feature, TCSC has been used to work as a solution
to sub-synchronous resonance (SSR) problems. However, it is not clear so far whether
TCSC’s inherent characteristic can avoid SSR and its effectiveness for SSR damping.
In this paper, an equivalent circuit of TCSC is used to better understand how TCSC
performs at sub-synchronous frequency ranges. Therefore, interactions of TCSC behaviors
and SSR components can be viewed individually. The effects of TCSC operation interfered
by sub-synchronous components are discussed. Results show that TCSC has the capability
to damp SSR, but this capability can be deteriorated if TCSC firing logic cannot
be effectively maintained.
This study provided a new configuration of
the 180-deg round turned channel with a perforated divider, as well as numerically
investigated the effect of perforations, including the diameter of perforation
and the angel of perforation, on the fluid flow and heat transfer. The
numerical results appeared in good agreement with previous experimental data
under the same operating conditions. The results indicated that large size and
positive angle of perforation changed the fluid flow pattern and the local
Nusselt-number distribution fundamentally. It is noteworthy that a more uniform
distribution of Nusselt-number was achieved by increasing the diameter of