  In this work we connect some measurable properties of the CIV1549 emission
line with the quasar accretion rates (Eddington ratios). A tight correlation is
found for a sample of more than a hundred nearby objects, suggesting a possible
method for a relatively accurate estimate of the Eddington ratio of
high-redshift quasars, at least for the radio-quiet ones. This paper further
confirms the existing notion that the CIV changes (shifts) are mostly driven by
the accretion rate.
