The phrase "a weakening role" is correct and usable in written English.
It can be used to describe a position or function that is diminishing in strength or influence within a particular context.
Example: "The recent changes in management have led to a weakening role for the marketing department in decision-making processes."
Alternatives: "a diminishing role" or "a less influential role".
The model also highlights an important weakening role for pore diameter, but finds that crystal diameter has a less significant influence for strength.
Codron said that strong oversight of admissions needed to continue, because of the strong incentives for schools to manipulate selection on the basis of ability; the weakening role of local authorities; and an increase in the number of schools that are allowed to act as their own admission authority, such as academies and free schools.
Earlier we reviewed arguments talking about the weakening role of government and the strengthening role of corporate actors in shaping our individual and community experiences.
When it comes to influencing public opinion, the 2016 presidential election demonstrated with sobering effect the weakening role of traditional media and the ascendant power of social networks like Facebook.
The physician-specific strategies helped managers to maintain control over physicians in daily work but, in a longer perspective, seemed to decrease manager role legitimacy and contribute to a weakening of the manager role within the organisation.
At the same time as they increase managerial control in daily work, they seem to decrease the managers' role legitimacy and contribute to a weakening of the manager role in the organisation.
This might result in a weakening of Iran's role in the region.
However, it seemed that those strategies did not increase the managerial jurisdiction of the managers, but rather contributed to a weakening of the manager role in the organisation.
And weakening the role of such a coordinating agency also goes against prevailing wisdom and national trends.
In a world where many physical communities are weakening, what role can the internet play in strengthening our social fabric?" The implied answers there are "people should have a voice through Facebook," "people should use Facebook's encrypted chat app WhatsApp," and "people should collaborate through Facebook Groups".
