Sentence examples for present an ongoing challenge from inspiring English sources

These and other issues present an ongoing challenge to attempts to establish and maintain long-term North-South research partnerships.

However, materials that have a high-degree of spectral similarity between classes, such as similar plant-types or closely related plant species, and large variations in albedo present an ongoing challenge for accurate class discrimination with imaging spectrometry.

That presents an ongoing challenge for regional policy makers in the Gulf, where the hydrocarbon sector can make up as much as 80 percent of government revenues, he and others noted.

Soft-tissue loss presents an ongoing challenge in plastic and reconstructive surgery.

These surfaces are difficult to traverse, and their access presents an ongoing challenge for mobile robots.

Renal osteodystrophy presents an ongoing challenge for clinicians, despite numerous therapeutic advances in its management.

The understanding of cracking mechanisms in concrete materials has presented an ongoing challenge and has not, to date, reached a high level of satisfaction.

The fact that the lungs have developed sophisticated, multi-tiered defenses directed to removing particulate and soluble material that would not normally be resident in the airspaces presents an ongoing challenge for inhalation therapies (Albertine 2010; Olsson et al. 2011).

Nutrition education has presented an ongoing challenge to medical educators.

De novo assembly of the transcriptomes of nonmodel organisms presents an ongoing challenge.

Since the mid seventies, when penicillinase producing N. gonorrhoeae (PPNG) was first reported [ 1], treating gonorrhoea has presented an ongoing challenge around the world.