For those news outlets that remain in Iraq, the constraints on normal reporting are often formidable.
But when Garton Ash, a fellow of St . Antonys College, Oxford, explores his favorite themes, the results are often formidable.
Unfortunately, there is a dearth of effective HIV prevention programs targeting youth in rural settings where there are often formidable barriers to sex education programs.
Clinton was often formidable in debates in 2008, when she competed with Barack Obama, as was Webb in 2007, when Democrats picked him to respond to George W. Bush's State of the Union message.
The lines are often formidable – customers are urged to call ahead.
The logistics of distance are often formidable.
Major other toxicities were vomiting, diarrhoea, and chemical or haemorrhagical cystitis which were often formidable and unpredictable (Moertel et al, 1972; Muggia et al, 1972).
Persuading mothers to send daughters to school is often a formidable practical challenge.
Arriving at careful answers to these questions is often a formidable task, and a growing literature on Critical Junctures and Historical Legacies addresses this challenge.
However, coming up with accurate models or meta-models from noisy real-life data is often a formidable task due to their frequent association with high degrees of random noise, which might render an ANN or GP model either over- or underfitted.
