The semimicroscopic particle-hole dispersive optical model, having unique abilities in describing main properties of various giant resonances in medium-heavy-mass spherical nuclei, is applied to a number of isoscalar giant multipole resonances in singly-closed-shell nuclei ${}^{58}\mathrm{Ni}, {}^{120}\mathrm{Sn}$, and ${}^{142}\mathrm{Nd}$. Some of the calculation results are compared with respective experimental data, including those obtained just recently. Special attention is paid to a comparison of calculated isoscalar multipole strength functions with the respective experimental strength distributions in a wide excitation-energy interval.

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• Collective models
• Giant resonances
• Nuclear many-body theory
• Nuclear structure & decays
• Shell model