<正> Firstly,the concepts of the traveling wave entropy and the feature function of traveling wave entropy were defined.Then the statistic characters of the tra
<正> In the light of fractal geometry theory, the characteristics of coal's electric parameters (including dielectric constant, alternating conductivity, di
<正> Further evidences show that most mining dynamic disasters are mainly oc- curred nearby NNE and near SN geological structures.In-situ stress measurement in