The phrase "a method must" is correct and usable in written English.
It can be used when stating a requirement or necessity regarding a method in a particular context, such as in academic or technical writing.
Example: "For the experiment to yield valid results, a method must be established that adheres to strict scientific protocols."
Alternatives: "a method has to" or "a method is required to".
A method must be devised for joint control of disputed areas such as oil-rich Abyei, which lies on the border between north and south and which is not having its own referendum, as mandated in the 2005 peace accord.Negotiating a final deal is a job for the sort of tough guy that George Clooney, an actor-cum-campaigner, likes to play in his films: sly, ruthlessly pragmatic but with a big heart.
The standards a method must meet to produce knowledge depend on the context in which it is used.
Hence a method must be devised to logically estimate the new surface boundary conditions for the next trial integration.
Thus, a method must address the quality and service levels as defined above in order to assess comfort.
The necessary checking processes of such a method must be implemented using a dedicated algorithm, which is typically formulated using a textual notation.
If, in a galaxy not too far away, sovereign debt workouts are to have any chance of an orderly completion, a method must be found to neutralize this new weapon.
Comparatively to the static texture synthesis, given a finite video sample of a dynamic texture, a synthesis method must create a new video sequence which looks perceptually similar to the input in appearance and motion.
To solve such a system, a numerical method must be applied (MATLAB).
Since these techniques generally require several stages, extra chemical compositions or a stabilizer agent, a new method must be considered for nano-ZnO treatments onto textile materials [27 30].
However, as is well known, this expansion breaks down at a marginally stable critical point, e.g. at a Bogdanov–Takens point, and a different method must be used to analyze such a situation.
To give a positive answer to this question, a calibration method must utilize not only ground control information, which is typically very limited, but also the relative accuracy information from the overlapping flight lines.
