"a study on how" is a correct and usable phrase in written English.
It is typically used when introducing a topic of research or a method of studying something. For example, "This report presents a study on how artificial intelligence can be used to improve customer service in the retail industry."
From Mr. Leslie, a study on how to become a citizen through the sport.
The Centre for European Reform is shortly to publish a study on how the bank can be made more accountable.
The administration wants to leave it in place while it finishes a study on how to carry out a repeal.
A study on how the business community interacts with the eThekwini Municipality (pdf) in South Africa concluded: "E-government is not just about municipal websites, email and SMS.
Last year, the city began a $5 million renovation of the tower and said there would be a study on how it could be used again.
In addition, he said he would authorize $10 million for a study on how best to memorialize the hundreds of thousands of victims of Saddam Hussein.
An Israeli team is about to begin a study on how the system might work for the diagnosis and monitoring of tuberculosis.
You've also agreed to be part of a study on how such decision-makers interpret information about how patients will fare.
Other winners included a prize in medicine for a study on how to treat nosebleeds using strips of cured pork, and a prize in arctic science was given for a study on "how reindeer react to seeing humans who are disguised as polar bears".
As a first order of business, Mr. Bokhanovsky commissioned a study on how to maintain the link between natural gas and oil prices in contracts, an idea opposed by the International Energy Agency, which advises energy consuming countries.
Carmody and colleagues have also produced a study on how many more calories we expend chewing and digesting uncooked food in relation to processed (by pounding) and cooked foods.
