The phrase "a needed example for" is correct and usable in written English.
It can be used when you want to indicate that an example is necessary or required for a particular context or situation.
Example: "The teacher provided a needed example for the students to understand the complex concept better."
Alternatives: "an essential example for" or "a necessary example for".
Next year the Romney Administration will likely work on pro-growth tax changes, which will serve as a much needed example for Europe.
In some cases, complaints probably prompted health workers to give a needed medicine for example, antimalarials for children with anemia and ORS for children with diarrhea.
This limits the signaling overhead due to DL-HII messages to a level comparable to that of a handover procedure, which is needed, for example, for macro-to-femto-cell handover in open access systems.
There are, however, situations where an RCT is not specifically needed, for example, in case of a 'dramatic' or 'immediate' effect.
And if an assault squad needed, for example, to toss the 35-pound robot though a window, where it happened to land on its back, it would flip itself over and start shooting video.
Methods used to evaluate therapeutic transdermal systems seem to be suitable, but they must be significantly modified and special equipment is needed, for example, a modified physical balance for measuring mucoadhesive strength [ 14].
The feature structures representing concept types and tokens may be extended as needed, for example, with an additional attribute for color intensity.
This option is also of use when a subset of plots is needed, for example in view of data publication.
Sometimes outside assistance was needed: for example, a team found that the poor treatment of Military Medical Assistants (MMAs) contributed to inadequate staffing.
There is still going to be a need for switches; for example, customers who want to project one network onto different infrastructures — but this is far from a big growth opportunity.
