The phrase "underlying challenge" can be used in written English and is grammatically correct.
It refers to a problem or difficulty that is not immediately apparent, but exists beneath the surface or underlying the main issue. Example: The company's financial struggles were compounded by the underlying challenge of a flawed business model.
And Mr Schwarzenegger needs to come up with a budget for the next financial year by January 10th.However, the underlying challenge has to do with the partisan nature of Californian politics, where the state presents an extreme version of the national picture.
But this isn't really Little Rock, 1957, even if the South and West Sides have long been victimized by inequities in city services and even if Mr. Jackson touched on the underlying challenge by exhibiting a firm grasp of the obvious that others often miss.
Egypt, the most populous Arab state, served as a model: the army officers who grabbed control in a 1952 coup established an autocratic regime, in effect a dynasty of fellow soldiers, that survived until 2011.Though recent Arab revolts have made rulers such as Egypt's Hosni Mubarak the focus of popular rage, the underlying challenge of the Arab spring has been to the "dynasties" they represented.
"That is the underlying challenge upon which we and our partners such as the Government of Japan have to maintain a clear focus".
Although a broad spectrum of natural products synthesized by cyanobacteria has potential bioindustrial applications, the underlying challenge in commercialization is to achieve production yields that meet realistic scalable production.
The underlying challenge, however, is to address the innovation deficit.
"Some of those underlying challenges will have to be addressed," he said.
Pellegrino said Google had observed globally that content levies did not affect the underlying challenges faced by media companies.
In his first direct comments about Snowden since Russia's decision last week, the president said the situation reflected "underlying challenges" in dealing with Moscow.
And partly, he said, his approach was a sign that, though there is fiscal stability, the underlying challenges to urban life remain.
My research proposes novel computational frameworks which address the above questions by effectively handling the core underlying challenges such as missing counterfactuals and presence of unmeasured confounders.
