The phrase "a substantial effort by" is correct and usable in written English.
It can be used to describe a significant amount of work or resources contributed by a person or group towards a particular goal or project.
Example: "The success of the initiative was largely due to a substantial effort by the volunteers who dedicated their time and skills."
Alternatives: "a significant contribution from" or "a considerable effort from".
I further agree with the author that the needs of these children must be met by a well planned strategy requiring a substantial effort by many people.
I believe there was a substantial effort by Mr. Kellner to gain money, for his own benefit, by making up stories".
"I believe there was a substantial effort by Mr. Kellner to gain money by making up stories," he told the host of the program, Zev Brenner, last week.
As Banerjee (2007) suggests, this trend reflects a substantial effort by economists to "get into the machine"—that is, to study schools in detail and understand the educational production function.
While this would mean a substantial effort by the regulatory authorities, such a procedure would lead to major improvement in pharmacotherapy in children, from both an ethical and medical point of view.
During the past 20 years, a substantial effort has been made by CDC, WHO, PAHO, and private and public partners working with governments to provide existing vaccines in an equitable manner to some of the world's most disadvantaged populations, and to ensure that these populations have equal opportunities to receive new vaccines, such as rotavirus and pneumococcal vaccines (9, 10 ).
While a substantial effort continues to be made by the community to develop and benchmark new and efficient sampling schemes, the limits of performance of a given algorithm, e.g., what is the best attainable accuracy of the method for a fixed computational effort and if that is good enough, have not received comparable attention.
During the 1960s, there was a substantial effort challenging ketuanan Melayu led by the People's Action Party (PAP) of Singapore — which was a state in Malaysia from 1963 to 1965 — and the DAP after Singapore's secession.
The item "difficulty climbing stairs" could seem to be important because climbing stairs represents a substantial effort, and was also identified by patients as a priority during interviews and focus groups [ 11].
