Can anyone please help by defining the two related terms in the title:
'Ecological Coefficient Of Performance' and 'Availability Loss'

From the paper: 'Performance optimization of irreversible refrigerators based on a new thermo-ecological criterion':

"Performance conditions for the ECOP and COP criteria are the same yet they have different meanings. The COP gives information about the necessary power consumption in order to produce a certain cooling load while the ECOP gives information about the entropy generation, i.e. the loss rate of availability."

What exactly does 'Ecological' COP mean and what is the 'Availability Loss' ?

Thanks ahead