Sentence examples for and represents a difficult from inspiring English sources

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.

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

For highly autonomous physicians and nurses this standardization of medical decision by moving to guidelines and protocols represents a difficult transition [12].

However, job scheduling in Grid and Cloud environments represents a difficult issue since it is basically NP-complete.

However, chemoresistance is still a heavy burden in cancer patient treatment, and thus it represents a difficult challenge for future improvement of chemotherapy effectiveness.

One chapter for the victims has closed, but bringing a civil claim represents a difficult and potentially painful new one.

However, whole-pancreas transplant represents a difficult and risky surgical procedure (8).

In designing a stereotaxic brain atlas, selecting the best nomenclature to be used always represents a difficult and controversial choice, an issue especially important to the parcellation of the thalamus.

However, this flexibility comes at the cost of defining and setting multiple internal parameters, which represents a difficult task.

Osteomyelitis associated with infected overlying wounds represents a difficult diagnostic and therapeutic problem; bone biopsies can be done during debridement of the overlying wounds, but it is unclear how often the results of these bone cultures actually affect subsequent antibiotic decisions.