But Dr. Gai, 52, says he is being vilified for executing the difficult mission he was hired to fulfill: turning a backwater of a department into a ranked player in the insular world of nuclear physics -- and, if necessary, ruffling a few feathers.
One of the reasons Biles was considered by many to be the world's greatest gymnast even before Thursday's competition was that she executed the most difficult moves with consistency and quality.
Though fiendishly difficult to execute, the work sounded giddy, sunny and seductive by turns.
Though it is difficult to execute the ICC's arrest warrants for crimes against humanity, named indictees could be further sanctioned.
The blustery conditions in Arthur Ashe Stadium made it difficult to execute the simplest of shots, but rather than letting her frustrations boil over, Zvonareva pared her expectations and her game.
It is most effective, from a medical standpoint, to confront these threats head-on before they have made contact, for it is far more difficult to execute the standard medical response to a sucking chest wound than it is to create one.
However, the location, size and description of the of the user interface elements made it difficult to execute the activities.
By forcing a hacker to gain physical control of a computing device or server to initiate an attack we make it much more difficult to execute the attack and traditional methods of defense such as physical security controls are then also effective.
Analysts cautioned that executing the plan will require more difficult work by European governments in the months ahead.
