The phrase "a service is required" is correct and usable in written English.
It can be used in contexts where you need to indicate that a particular service is necessary or needed for a task or situation.
Example: "In order to complete the project on time, a service is required to handle the logistics."
Alternatives: "a service is needed" or "a service is necessary."
The framework, depicted in Figure 1, calls for two quantities to be estimated: how often a particular service is required by the target population (requirements), and how often that service can be performed by the available health workforce (supply).
Since this location will change over time due to the mobility inherent to VANET nodes, a position service is required that maintains a mapping in real-time between vehicle identity and exact location.
Pregnant employees may feel deterred from making a move because a period of service is required before becoming eligible for maternity pay, she says.
"The system they use has various trigger phrases that track it to saying a 999 ambulance service is required, which I think is where the problem is arising".
Therefore, provision of centres with a 24/7 apheresis service is required.
A minimum quality of service is required; it is not something to be provided through competition.
In the TCG architecture, a specialised Privacy Certifying Authority service is required to participate and provide supporting validation of credentials and keys that are used by the TPM to encrypt and sign messages (including integrity measurements) between the TED and the service provider's cloud infrastructure.
It is worth noting that the cluster head functionality is only utilized for a given time period when the service is required.
This expertise and service is required for a system that uses software that has to be programmed for specific applications.
Multiplying this value by the estimated proportion who would require ART screening per week yields the estimated number of times that service is required in a typical week.
