Sentence examples for has presented significant challenges from inspiring English sources

President Obama's recent decision to commit troops only for a further two years and not the expected 10 years has presented significant challenges for the incoming government.

On the one hand, it has presented significant challenges to urban development that were not overcome until recently in the town's long history.

To date, achieving uptake of IS has presented significant challenges.

The repetitive nature of this region has presented significant challenges to genomic sequence assembly.

71 The variability in type and extent of sympathetic chain disruption has presented significant challenges in drawing useful comparisons of the various procedures performed in different centers throughout the world.

Year: 2011 Major Area: Policy, Advocacy and Partnerships for Children's Rights Sub Area: Basic Education and Gender Equality Language: English Abstract: Cambodia's history of conflict coupled with persistent rates of poverty, has presented significant challenges to improving the standard of living and protecting the rights of its children.

The fields of astronomy and gravitational science have presented significant precision engineering challenges.

The weakened economy presented significant challenges to provincial government finances.

In the context of gene-expression analyses, meta-analysis of results from microarray studies has great potential, but also presents significant challenges due to differences between the platforms and analysis approaches employed in each study [ 1- 5].

"The Assad regime has consistently escalated its use of force whenever the rebels' strength has presented a significant challenge to the regime," Mr. Holliday said.

The active site of the enzyme was proposed to consist of two differently sized substrate binding pockets and the stringent steric constraint in the small pocket has presented a significant challenge to production of structurally diverse chiral amines.