Using a popular three-factor term structure model that accounts for the correlation between default and interest rates to fit corporate bond yields, we uncover missing factors in the model. The principal component analysis indicates that the model residuals of bonds across different ratings and...

SF6–N2 mixtures are becoming the best alternative for SF6 in electrical systems. Plasmachemical modeling and the results of a positive surface streamer are reported in this paper. The model exhibits excellent streamer transition from the gas gap to the insulator surface. The surface charge...