Sentence examples for a standing problem from inspiring English sources

But the threat of renewed raids from the north remained and constituted a standing problem for rulers of the Middle East thereafter.

It remains a standing problem how and why the first nervous systems evolved.

Launching a large balloon in a limited launching field is a long standing problem in Japan.

Finding the location of faults in distribution networks has been a long standing problem for utility operators, and an interesting subject for researchers as well.

However, due to the ultra-fast synthesis procedure, localization of the SWCNT synthesis in an arc discharge plasma volume in situ has been a long standing problem.

The Russians have focused on drugs, Afghan heroin a long standing problem to them through the former Soviet Central Asian Republics.

However, microplastics are a longer standing problem and have received less attention, as they are more diffuse in their sources and harder to subject to a single ban.

Protein structure prediction (PSP) is a long standing problem in structural biology and bioinformatics.

Modeling and detecting parameter stability of econometric models is a long standing problem.

Finding the capacity of MIMO broadcast channels, a long standing problem in the information theory community, was recently solved.

Underground utility lines being struck by mechanized excavators during construction or maintenance operations is a long standing problem.