In building models it is often desirable to use qualitative as well as quantitative variables.
Thus, it is often desirable to choose instrumental set-ups that minimize the occurrence of pileup.
In these labs it is often desirable to allow students to define their own experiments.
However, it is often desirable to over-express proteins in species other than E. coli.
The local delivery of reagents to the recording site is often desirable.
Blocking of experimental units is often desirable and is sometimes required.
Accordingly, it is often desirable for a processor to possess robustness.
Such partitioning is often desirable in large-scale parallel databases, as well as in peer-to-peer (P2P) systems.
Most polymer electrolytes are anion as well as cation conductors, but it is often desirable to enhance the cation contribution.
In many cases, material anisotropy can show up as an intrinsic or tailored property, and its measure is often desirable.
In practical system identification, process optimization and controller design, it is often desirable to simultaneously handle several objectives and constraints.
