Thus, the results of laboratory studies showing smaller age differences in prospective memory when younger adults are given a difficult ongoing task and older adults are given an easy ongoing task have no ecological validity and are merely an exercise in academic discourse.
Mussolini wrote to Bergonzoli: "I have given you a difficult task but one suited to your courage and experience as an old and intrepid soldier the task of defending the fortress of Bardia to the last.
The Continental Congress gave Thomas Jefferson a difficult task: frame a vision of liberty and freedom that all could accept.
A large number of repair materials and the many manufacturing processes available to the engineer, coupled with the complex relationships between the different selection parameter, often make the selection of a materials for a given application environment a difficult task.
The systematic generation of all possible concrete AFs for a given pattern is a difficult task, but is probably not needed.
We had more than 400 excellent entries, from primary, secondary and special schools from across Great Britain, giving the judges a difficult task in selecting the shortlist.
Last week's competition gave judges Fung Ho, Barry Brisk, Mark Artusio, Patricia Shanks and Larry Lippold a difficult task as they ultimately selected Fontaine and Shipman over sopranos Marina Boudart Harris, Emma-Grace Dunbar and Stephanie Elsayed, baritone Bernardo Bermudez, violinist Caitlin Kelley and cellist Indira Rahmatulla.
Using chromosomal contacts data in order to generate the precise scaffold of a given genome is however a difficult task: hence, we developed GRAAL, a robust and explicit statistical method to tackle this issue at the highest resolution possible (Marie-Nelly et al., 2014a; Figure 1A).
This, as well as the presence of constraints in the process manipulated variables, results in a complex, non-linear closed-loop system and hence, the manual tuning of the PID controllers according to some given performance specifications becomes a difficult task.
"Gloucestershire's poor display in the field has given the home side a difficult task to get anything out of the match after a positive first day".
