The phrase "obstacles imposed" is correct and usable in written English.
It can be used when discussing challenges or barriers that have been placed or enforced by external factors.
Example: "The obstacles imposed by the new regulations have made it difficult for small businesses to thrive."
Alternatives: "barriers created" or "challenges set".
And it is scrutinizing obstacles imposed by the phone companies on low-price rivals like Skype.
India's dynamic private sector continues to perform well despite the many obstacles imposed on it by the government.
Ultimately, the experts say, all detectors are likely to encounter obstacles imposed by the laws of physics.
However, larger trials are "almost impossible", Dr Rucker argues, because of the "practical, financial, and bureaucratic obstacles" imposed by the drugs' legal status.
"Instead of holding out carrots, they are beating us with sticks," said Mr. Furlan, noting that Europe's finicky regulators have raised none of the obstacles imposed by the United States.
Ames the idealist could see a future in which Palestinians and Israelis were at peace with each other, and in which America was seen as a friend by all.But Ames the realist was forced to recognise the obstacles imposed by America's political cycle and by its abhorrence of the terror tactics that had finally brought the Palestinian cause to its attention.
Increasingly, airports like to add yet more obstacles, imposing charges – and the hassle that goes with them – on anything from dropping off passengers to using a baggage trolley.
Kinodynamic motion properties of mobile robots and clearance from obstacles impose additional equality and inequality constraints on the trajectory optimization.
Although the pros and cons for each sequencing mechanism have more or less been discussed in a number of occasions, the potential obstacle imposed by palindromic sequences has not yet been addressed.
But differences in dialect and culture often imposed obstacles to the recognition of tribal solidarity.
Indeed, despite all the obstacles Washington has imposed, including making it a crime for banks and credit card companies to handle Internet gambling payments, millions of Americans still manage to play poker and place sports bets online.
