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This paper is to point out the mistakes of previous expression of power loss density of the electromagnetic pulse (EMP) in Debye media. We derive the precise expression of transient power loss density both from the electrodynamic (ED) approach and equivalent circuit (EC) approach. In the ED approach, the expression is derived from the energy conservative law and Debye equation. For the harmonic field,...
According to the behavior that the polymer solution has the characteristics of viscosity and elasticity, the transient flow mathematical model has been established and has been solved by using finite-difference method. The type curves have been plotted. The influence of some properties of polymer solution on the characteristics of the type curve has been analyzed. Compared with the curves simply considering...
The combination of governance revolution and information and communication technology (ICT) fueled e-governance which make ICT as instrument. E-governance will be new manner of good governance. However, there are several kinds of risk when it develops, such as political, economic, social and technological. They mainly include the plight of institution and policy and political deception; the lack of...
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