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E A [\widetilde {T} P_1] =\dfrac{D_c}{pm^{T_s+D_R}} [0(c_m−c_s)p_mT_s−h_s(\dfrac{p_{s}t^{2}_{s}} {p_m} −p_st^{2}_{s}) \\ − E[\widetilde{id}_s](T_R+p_st_s(\dfrac{1}{D_c}−\dfrac{1}{p_m})) \\ − A_s+(c_r−c_m)p_mT_s−h_m(np_mT_sT_R−\dfrac{n_2+n−2r−2}{2}T_RD_R−\dfrac{p^{2}_{s}t^{2}_{s}}{2p_m}) \\ − A_m+(cr_1−c_r)p_mT_s−\dfrac{h_r}{2}(\dfrac{p^{2}_{m}T^{2}_{s}}{D_c}−2np_mT_sT_R−(2n+1)T_RD_R)\\ − E[\widetilde{id}_m](\dfrac{p_mT_m−nD_R}{D_c})+\dfrac{(n+1)cr_1E[\widetilde{Ire}]D_cM^2}{2}−E[\widetilde{id}_r]T_R−A_r]