The researchers found that, compared to face-to-face projects, the facilitation of VTs is an extremely difficult task.
For example, it can be extremely difficult to project for customers with whom the company does not have a contract or even a regular amount of revenue.
As the political scientist Stephen Walt has written, in words that should be inscribed in gold in the Oval Office and at 10 Downing Street, it is "extremely difficult to project power across water and on to a foreign shore".
" 'Family' represents an extremely difficult television project in that it is trying to salvage the familiar stuff of soap opera for the less superficial probings of the contemporary drama," John J. O'Connor wrote in The Times during its first season, adding that Ms. Thompson and James Broderick, who played her husband, "achieved a remarkable combination of low-keyed intensity and powerful impact".
As separating out U-235 is extremely difficult, the Manhattan Project's physicists were not sure they could provide it on the scale that bomb-makers would require.That created a need for an alternative source of fissile material, and reactors provided it.
Gazprom and the Russian government are pressing the E.U. authorities to relax rules requiring operators like South Stream to open up pipelines to competitors, saying that would affect its rate of return and make the project extremely difficult to carry out.
But the Russian government has complained bitterly about E.U. rules that would require it to allow competitors to use such a pipeline, saying constraints would affect its rate of return and make the project extremely difficult to carry out.
And now, after 14 years, the deaths of several "Buena Vista" members and changes in the music industry that have made blockbuster success for any album — let alone highbrow world-music projects — extremely difficult, Mr. Gold has finally made the record that "Buena Vista" might have been: "AfroCubism" (World Circuit/Nonesuch), which will be released on Tuesday.
Calibration turned out to be easy for one of the cameras I chose to use for this project and extremely difficult for the other.
These diseases are extremely difficult to control, and our project has attempted to characterise the viruses and then develop reliable procedures for the genetic transformation of Chinese wheat varieties, using virus-derived sequences to confer disease resistance.
He told MPs that large infrastructure projects were "extremely difficult for individual governments to take and to deliver".
