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It is preferable to focus on one single aspect of optimisation, although several aspects can indirectly come together and overlap one another. Once this aspect or aspects are fully realised, they will occupy the whole work effort. If one path in the overall work fails or seems to have limited capacity for improvement, then effort will be diverted elsewhere with the intention of increasing research productivity. Every piece of results shown following this work will also be adjoined by the observation that some aspects are not worthy of further exploration. Consequently, good guidance on continuation of this research should be available.
The main direction that this work will take is yet unknown and it is therefore hard to say anything about feasibility considerations. The actual work to be embarked on and the objectives and milestones that go with it are due to be determined.