Sentence examples for are difficult to retrieve from inspiring English sources

In the two-way relay networks, the receive nodes are difficult to retrieve the mixture of signals transmitted from different terminal nodes with unknown timing offsets and unknown channel information.

Because the larvae often hide in the soil or in intricate woven tunnels, they are difficult to retrieve in the field.

However, definitive clinical studies supporting this view are difficult to retrieve in the literature.

Some of these influences are difficult to retrieve from published maps or even from the data themselves.

Also, TreeBASE is not exploited fully because data are difficult to retrieve using search terms that are intuitive to users.

Data were available on several demographic and behavioural risk factors; usually these data are difficult to retrieve from the general practice.

Payments that go astray or are accidentally duplicated can be difficult to retrieve.

By day 60, the implanted biomaterials were more deeply seated within the fibrous connective tissue and were difficult to retrieve.

With most of the calibration sets, it was difficult to retrieve the pure EEMF spectra of all three fluorophores even if they did not have spectral overlap with each other.

For Tweeter, we have found a median of four tweets per hour for the term 'cardiac arrest', whereas for the other terms it was difficult to retrieve any viable information (Fig. 24).

For genes with three or more regulators, even one regulator seems to be difficult to retrieve.