The phrase "a demanding method" is correct and usable in written English.
You can use it to describe a method that requires a lot of effort, skill, or attention from those who are using it.
Example: "The training program employs a demanding method that challenges participants to push their limits and improve their performance."
Alternatives: "a rigorous approach" or "a challenging technique."
While the ST-BIEM is a computationally demanding method having a time complexity of O(N 3), recent development of the fast domain partitioning BIEM (FDP-BIEM) by Ando (2016) allows us to reduce it to O(N 2).
In neuroimaging, dynamic functional connectivity (DFC) analysis is a computationally demanding method used to investigate dynamic functional interactions among different brain regions or networks identified with functional magnetic resonance imaging (fMRI) data.
Leaching of limonene from orange wastes can be a low energy demanding method for removing the inhibition effects of the wastes in the digestion process.
When very large numbers of ESTs are needed, serial-subtractive hybridization is an effective, but technically demanding, method for removing duplicate clones [ 22, 23].
Moreover, this modeling technique requires no discretization of state variables, thus offering an efficient alternative to computationally demanding methods.
The subcellular element method is one of the most computationally demanding methods and therefore serves as an excellent benchmark of what can be done with the latest technology.
These new methods perform nearly as well as computationally demanding methods based on flux balance analysis.
However, alternative (but also most resource demanding) methods have been introduced and extend the class of allowed joint structures.
The coal industry demands methods of coal analysis on a rapid and reasonably accurate basis.
The Dutch ethics committee also demanded methods to be non invasive, if possible.
