The phrase "acknowledged at an" is not complete and lacks context, making it difficult to determine its correctness in written English.
It could be used in contexts where you are referring to something that has been recognized or accepted at a specific event or location, but it needs additional information to be clear.
Example: "The findings were acknowledged at an international conference on climate change."
Alternatives: "recognized during a" or "accepted at a".
The laboratory's director, Charles Shank, acknowledged at an employees' meeting on June 25 that scientific misconduct had occurred, said Ron Kolb, who is in charge of communications at Lawrence Berkeley.
With Badgeville, by recognizing people with rewards and achievements tied to their area of expertise, people will be more likely to engage with their social software of choice — in this case Drupal — because it's been acknowledged at an organizational level with smart gamification elements.
Duncan acknowledged at an oversight committee last month that the program "has come to be a symbol of everything that's wrong with the DHS, when 4,000 bored cops fly around the country First Class, committing more crimes than they stop".
An M.T.A. official acknowledged at a Brodsky hearing that former Senator Alfonse D'Amato was paid $500,000 for a phone call to speed up the renovation of the agency's headquarters.
An Energy Department official testifying before Mr. Stupak acknowledged at a hearing on Jan . 23that parts of the program may have outlived the original intent.
Mr. Lynton acknowledged at a conference this month that the competition would be brutal.
"I slept through it," he acknowledged at a news conference at Columbia.
"We lost our way," Levine acknowledged at a conference in April this year.
Such an elevation, doctors acknowledged at a second press conference, is indicative of a heart attack.
Chen Tong, chief editor at Sina, acknowledged at a conference last month that controlling content on microblogs was a "very big headache".
Tice acknowledged at a news conference that the newcomers can be a little slow to absorb their assignments.
