Second, a pre-established causal relation between two variables (X, Y) is essential to establish a mediation role (M).
"It is now essential to establish who authorised this rendition.
History is essential to establish your savvy and emotional credentials.
It is essential to establish a brand image that is not only distinct from your competitors' but familiar to your target market.
Thus, to demonstrate that an organism is venomous, it is essential to establish that an animal possesses toxins and that they have some sort of toxin delivery mechanism.
Histopathology is essential to establish diagnosis.
A good knowledge of the flow pattern is essential to establish adequate hydrodynamic correlations.
Accurate estimation of sediment concentration is essential to establish physically-based erosion models.
Moreover, mining of useful alleles is essential to establish non-transgenic low/high-Cd-accumulating rice.
A reaction front passing through the whole sample without reaction quenching is essential to establish bonding.
Further, it is essential to establish reliability of novel measurements systems compared with standard techniques.
