No research or studies required - it's all there already.
Cutting-edge research often requires new techniques that take time to learn.
This means that, for most academics at least, research and teaching require an institutional framework.
The research has required close collaboration with practitioners in the field.
Of course, in his experience, geological research had never before required him to shoot anyone.
Add to this the close research required by the work of editing, and you surely will find an excuse for my delay.
The research requires long-term vision if the energy challenges of the future are to be identified.
Data determines that the research has merit, but requires more study.
However, because Jocelyn's research required her to travel north for extended periods, by 1965 she had little time to keep the station running.
Conducting research requires a firm grounding in the concepts and prior work of a field.