Sentence examples for has presented some problems from inspiring English sources

The ease of use has presented some problems due to unrealistic expectations, inappropriate survey design, and questionable interpretations.

Total tree height was generally not measured in these studies, which has presented some problems in previous analyses (e.g., Moore et al. 2014; Watt and Zoric 2010).

Of course, that growth has presented some problems, considering ideeli's breakneck production cycle.

Barbados might have presented some problems in geography, but the tiny Caribbean nation was not much of a test on the soccer field, as the United States set out toward South Africa, the site of the next World Cup, with an 8-0 victory Sunday before 11,476 fans at the Home Depot Center.

But accelerating beyond that point has presented some unique problems.

This has presented some of the most challenging engineering problems due to the presence of high heat flux and high pressure.

In recent years, several methodologies have been published and claimed to be suitable for large population screening [ 22, 30, 45- 50], although all have presented some technical and non-technical problems, including the amount of DNA template required, degradation due to the use of bisulfite, inclusion of females, and failure to detect unmethylated expanded alleles.

Entering independent and assisted living facilities as well as receiving other services has presented enormous problems for some elderly gay and lesbians who must confront a still existing ignorance that forces them back into the closet.

Measuring low frequency data using conventional methods has presented problems in some systems with the values of key parameters often being obtained by extrapolation.

In some cases, that has presented special problems because the World Trade Center tragedy increased the risk of extending and deepening stock-market declines.

Working in Hollywood has presented particular problems.