The phrase "a principal task" is correct and usable in written English.
It can be used to refer to a primary or main responsibility or duty in a given context.
Example: "The team identified a principal task that needed to be completed before the project deadline."
Alternatives: "a primary task" or "a key task".
A principal task of stakeholder theory is to pragmatically and logically find ways to stitch "business" and "ethics" back together (Freeman et al. 2004).
A principal task is to explore pattern and process in lichen epiphyte diversity – species composition and richness – therefore demonstrating the utility of lichens as an ecological model system.
However, in 2010, for the first time, EPO was elevated as a principal task for the mission and metrics were collected for all EPO activities.
Classically, a dual-task paradigm is used to test, at a behavioral level, if neural resources called upon by a concurrent task participate to a principal task [40] [43].
The rapid and reliable identification of tens to hundreds of different metabolites in a single biological sample is a principal task of any metabolomics investigation.
HIV and HCV are intracellular parasites, therefore T-cell responses are crucial for antiviral defense and cytotoxic T lymphocyte (CTL) play a principal task by destructing infected cells [ 39, 40].
These beliefs lead to what Popper calls 'The Historicist Doctrine of the Social Sciences', the views (a) that the principal task of the social sciences is to make predictions about the social and political development of man, and (b) that the task of politics, once the key predictions have been made, is, in Marx's words, to lessen the 'birth pangs' of future social and political developments.
Elliott also talked about how she's started a teacher and principal task force with both new and veteran employees on Common Core Standards.
Cardano thinks that the principal task of a moral philosopher should be that of freeing the mind from misapprehensions and prejudices: "There are many people who prefer to be happy in a mistaken way rather than acknowledge the reality of their affairs and their condition" (De utilitate, OO, II, 24b).
Like the Monti government, it could be termed a dictatorship of the bourgeoisie: a government with no popular mandate, to rule for a limited if ill-defined period, and whose principal task is kick-starting an economic recovery defined not in terms of social needs but "growth": profit-making and exploitation.
Mebazaa is a long-time ruling RCD party stalwart (a member of the RCD Politburo, a former Minister, and a "survivor" from the Bourguiba era), whose principal task as interim President would be to organize elections and, from an RCD perspective, maintain the party's hold on power.
