We have evolved an effective two-dimensional dynamic interaction, which embodies the screening of electrons by optical phonons and by plasmons to confer the attributes of the pairing mechanism leading to superconductivity in layered electron-doped cuprates. The electron-doped Nd-Ce-CuO cuprate behaves as an ionic solid containing isolated CuO₂ layers of electrons as carriers, and a model dielectric function is set up that fulfils the appropriate sum rules on the electronic and ionic polarizabilities. Following strong coupling theory, the superconducting transition temperature of optimally-doped Nd-Ce-CuO is estimated as 28 K and the energy gap ratio is larger than the Bardeen-Cooper-Schrieffer value. The isotope effect exponent, coherence length and magnetic penetration depth are also estimated. Ziman's formula of resistivity is employed for analysis and a comparison is made with the temperature-dependent resistivity of a single crystal. The estimated phonon contribution together with the residual resistivity is lower than the reported data. The subtracted data infers a clear quadratic temperature dependence from T_c to near to room temperature. The implications of the model and its analysis are discussed.