Sentence examples for been difficult to collect from inspiring English sources

The numerical model developed herein was then used for the prediction of other mechanical properties of fibre-reinforced polymer composites that would have been difficult to collect at elevated temperatures.

These data have been difficult to collect in the past, especially on such a large scale.

Peirce's extensive publications are scattered among various publication media, and have been difficult to collect.

Detailed quantitative data has been difficult to collect: the individuals under study are likely to be outpatients, their general functioning may be variable and heterogeneous across the cohort.

It has been difficult to collect data on the availability of credit for the fishery sector in a number of countries in the Region.

To test whether OTX2 associates with specific DNA binding sites present within the promoter region of candidate hESC genes (OCT4, SOX2, NANOG and LIN28A), we performed chromatin immunoprecipitation (ChIP) assays specifically in OTX2+ Daoy and Daoy cells, because it has been difficult to collect sufficiently high OTX2+ hEN cell numbers required to perform the procedure.

Because an adequate sample may be difficult to collect using a syringe, we tested collection using a sterile sponge.

Hard evidence on this is difficult to collect.

It is difficult to collect and curate personal data collected by activity-tracking apps.

In many machine learning settings, labeled examples are difficult to collect while unlabeled data are abundant.

And the numbers can be off simply because it's difficult to collect exact data mid-conflict.