Sentence examples for and represent a difficult from inspiring English sources

These leaks, once managed acutely, can become chronic and represent a difficult clinical challenge.

DG allocation is a hot area of research and represents a difficult problem in electrical power engineering.

Determining the appropriate scale for co-occurrence analysis is probably community and habitat specific, and represents a difficult task.

Post-bereavement research studies represent a difficult and sensitive area of work, and this is likely to be the main and most important reason for the low response rate.

These patients represent a difficult diagnostic challenge and need to be screened for active infection and treated with antibiotics where appropriate.

For this reason, comparing and combining these data from different resources still represent a difficult task.

The new rules represent a difficult balancing act for the F.D.I.C, which is responsible for protecting depositors from losses.

Small fibrin strands may represent a difficult differential diagnosis.

Refractory headaches (RH) represent a difficult challenge, even for the most skilled practitioners.

Multifocal fatty liver deposition is another unusual pattern that can represent a difficult diagnostic challenge.

The strong interconnection between two FACTS devices in a power system is shown to represent a difficult situation for conventional PID controllers.