Intermediate-coupling collision strengths and line strengths for certain transitions ton=3levels in highly charged Be-like ions

Scaled intermediate-coupling electron-impact collision strengths $Z^2\Omega$ and electric-dipole line strengths $Z^{2}S$ together with transition energies are calculated for selected transitions between the lower group of mixed states $2s^2{}_{}{}^1{}_{}{}^{}S_0^{}{}_{}{}^{}$, $2p^2{}_{}{}^3{}_{}{}^{}P_0^{}{}_{}{}^{}$, and $2p^2{}_{}{}^1{}_{}{}^{}S_0^{}{}_{}{}^{}$ and the upper group of mixed states $2s3p{}_{}{}^3{}_{}{}^{}P_1^{}{}_{}{}^{}$, $2s3p{}_{}{}^1{}_{}{}^{}P_1^{}{}_{}{}^{}$, $2p3s{}_{}{}^3{}_{}{}^{}P_1^{}{}_{}{}^{}$, $2p3s{}_{}{}^1{}_{}{}^{}P_1^{}{}_{}{}^{}$, $2p3d{}_{}{}^3{}_{}{}^{}D_1^{}{}_{}{}^{}$, $2p3d{}_{}{}^3{}_{}{}^{}P_1^{}{}_{}{}^{}$, and $2p3d{}_{}{}^1{}_{}{}^{}P_1^{}{}_{}{}^{}$ in Be-like ions with nuclear charge number $Z$ in the range $14\le Z\le 54$. The results for $Z^2\Omega$ are given for eight impact electron energies in the range $1\le \epsilon \le 10$, where $\epsilon$ is the impact electron energy in threshold units. The results for transition energies and oscillator strengths are in good agreement with the experimental energies and with the energies and oscillator strengths for ${\mathrm{V}}^{19+}$, ${\mathrm{Fe}}^{22+}$, and ${\mathrm{Ni}}^{24+}$ calculated with Cowan's programs.