"an effective methodology" is correct and usable in written English.
You can use it whenever you need to describe a way of doing something that is known to be successful. For example: "My team is using an effective methodology to ensure that our project is completed on time."
The theory provides an effective methodology for investigating small scale effects in nanobeams, by well-posed problems.
In conclusion, we show that use of a modified antibody to deliver siRNA to podocytes is an effective methodology in vivo, without systemic effects.
The aim is to add rigour and depth to all aspects of the process by formulating questions, developing an effective methodology (surveys, video capture, test data, interviews), conducting an impact analysis and reporting findings for a peer audience.
This project demonstrates an effective methodology for widespread dissemination of emergency medicine knowledge.
SDM provides an effective methodology to describe nonlocal phenomena in NEMS.
It also suggests that lean or JIT production is an effective methodology which offers lot of benefits.
It is crucial to develop an effective methodology for restoring adequate compressive properties to osteoarthritic cartilage.
Generic programming is an effective methodology for developing reusable software libraries.
In the world of nanotechnology, a significant amount of research has been conducted over the last few years to produce an effective methodology to adsorb CO2 gas.
The unified form of criterion is an effective methodology of enhancing the proposed criterion to be easily applied to different situations.
Artificial raindrop algorithm (ARA) has been shown to be an effective methodology for solving optimization problems over continuous space.
