In Wang et al.,1 page 1382, paragraph 2, line 6, Eq. 1 reads:

$$\Delta T = \frac{{\int_0^{{t_d}} {j\left( t \right){{\rho }}dt} }}{{{{\text{c}}_{\text{p}}}{\text{d}}}}\quad .$$

It should read:

$$\Delta T = \frac{{\int_0^{{t_d}} {{j^2}\left( t \right){{\rho }}dt} }}{{{{\text{c}}_{\text{p}}}{\text{d}}}}\quad .$$

The authors regret the mistake.