Sentence examples for been difficult to model from inspiring English sources

Pore surface changes as microstructure evolves but this transient behaviour has traditionally been difficult to model.

Hematologic malignancies are driven by combinations of genetic lesions that have been difficult to model in human cells.

In the body, B cells form specific antibodies by mutating their antibody genes in the germinal center, a process that is not fully understood and has been difficult to model outside the body.

Nevertheless translating retinal gene therapy from animal research into clinical trials is still a lengthy process, including complexities in human retinal diseases that have been difficult to model in the laboratory.

Until now, these considerations have been difficult to model due to a lack of data.

Since mice and rodents do not express IGF-II during adulthood (DeChiara et al, 1991), it has been difficult to model IGF-II action in vivo.

Structures with mechanical joints are difficult to model accurately.

Gary Kleck, a criminologist at Florida State University, says it's difficult to model the effects of attrition.

It's difficult to model the economic impact of a border wall.

These devices are known to be difficult to model in a control perspective.

We believe this is due to cell population variations that are difficult to model with a different well during training.