To obtain accurate branch currents and system power losses, a power summation based power flow algorithm for radial distribution network is adopted; combining with the comprehensive rules based on system operation experience, the reconfiguration calculation of distribution network is carried out.

Using the proposed spatial coherence model,the analytical expressions of combination coefficients are deduced for power spectrum methods and response spectrum methods under multi-support seismic excitations.

Analysis on methods for predicting composite roughness of river channel with compound cross section;

in this paper is introduced a way for measurement of moment output power and electrical input power of moment actuators by means of the cross-spectrum method,with some of the results thus obtained.