The phrase "it is needed to determine" is correct and usable in written English.
You can use it whenever you need to explain that something needs to be figured out or established. For example: "It is needed to determine whether or not the new policy will be successful."
For successful aquaculture practices, it is needed to determine the minimum level of protein at which fish can attain maximum growth as well as the operational costs can be saved (NRC 2011).
Under the environment with various fuelling scenarios and with the limitation of tritium compatible equipments it is needed to determine the process design for the fuel delivery in the SDS.
Therefore, it is needed to determine which type of adenocarcinoma with BAC features is prone to be false-negative and which patient will benefit from postoperative F-FDG PET/CT surveillance.
It concludes that further study is needed to determine the relationship between income, capital market development and gender equality.
Carleton and Arroyo-Cabrales wrote that it is similar to mexicanus, but that further research is needed to determine whether it should be recognized as a subspecies.
It is clear that more research is needed to determine the effect of e-cigarettes on the symptoms of mental health problems.
It was concluded that further research is needed to determine how the aforementioned factors are interrelated and how they relate to existing models of technology acceptance.
But the researchers say further study is needed to determine whether it is effective.
That makes the black hole or neutron star -- more work is needed to determine which it is -- the youngest to have been detected.
There are upfront fees to begin the process, as well as annual fees to have the plan administered, so a bit of analysis is needed to determine whether it is a cost-effective option.
This correlation highlights the significance of brain docosahexaenoic acid in normal cognition, though further research is needed to determine if it represents cause and effect.
