Sentence examples for a persistent challenge for from inspiring English sources

Formulating a good working definition of annoyance is a persistent challenge for researchers.

"This issue has been a persistent challenge for Pakistan," said a senior American official who deals with South Asia and who spoke on condition of anonymity because of the delicacy of the matter.

A persistent challenge for this combination has been managing dynamically adaptive meshes on more and more MPI tasks.

Reducing return rates by helping consumers visualize what suits and fits remains a persistent challenge for ecommerce, especially when it comes to sartorial purchases.

Despite the fact that bone cysts were discovered about 100 years ago, they remain a persistent challenge for the treating physician.

Background: The achievement and maintenance of access sites for hemodialysis is a persistent challenge for both the vascular surgeon and the clinical nephrologist.

The complexity of socioecological systems (SES) has posed a persistent challenge to the development of methods for diagnostic and prognostic analyses of global change.

For the United States, this was a persistent challenge.

With malnutrition rates above emergency thresholds for a decade, nutritional health has become a persistent challenge in Chad.

Overton mounted a persistent challenge, twice tying Bohn on his way to a 66.

He added, however, that the long-term impact on driver behavior remained a persistent challenge.