The phrase "a focuses" is not correct in English.
It seems to be a misuse of the article "a" with the plural noun "focuses."
Example: "The project has several focuses that need to be addressed."
Alternatives: "a focus" or "the focuses" or "focus areas."
The paper due to be published later this month by Philosophical Transactions of the Royal Society A (Phil. Trans. R. Soc. A) focuses less on modelling than on empirical data about correlations between temperature, sea level and CO2 going back up to 66 million years.
Subtask A focuses on the principles and methodology.
The most recent issue of the Royal Society's Philosophical Transactions A focuses on the future of oil supply.
This paper analyses strategies that have been used in Baku, Azerbaijan, and a focuses on the strategies of sustainable development, that have been used to upgrade the environmental quality of this city.
This work is unique, relative to the existing work in the literature, because it: (a) focuses on a technologically relevant MMC system (2080/SiCp), (b) uses a combination of image analysis techniques to enable visualization and damage characterization, and (c) entails a significant amount of quantitative and statistical analyses of particle fracture and void growth in the composite.
Metallurgical and Materials Transactions A focuses on the latest research in all aspects of physical metallurgy and materials science.
The freshman segment of the expanded Contemporary Civilization course, CC-A, focuses on the history of Western civilization from the year 1200 through the present.
Its A component (HADS-A) focuses on anxiety and consists of 7 items.
Finally, VSP-A focuses on the well-being, feelings and perceptions of the teens, while PedsQL and CHQ focus on functioning (what children or adolescents can do).
[Facility A, Focus Group].
