The phrase "a unavailability" is not correct in written English; it should be "an unavailability." You can use it when referring to the state of being unavailable, typically in contexts like scheduling or resource allocation.
Example: "Due to an unavailability of resources, we will need to postpone the project."
Alternatives: "a lack of availability" or "an absence of availability."
For instance, in terms of availability, Modbus/TCP may use some function codes (e.g., ECO4: Server Failure, EC06: Server Busy) as the response of a query from an unavailability device.
To describe clinical and epidemiologic characteristics of critically ill patients treated outside the ICU due to an unavailability of beds.
The analytical results have shown that the proposed scheme not only provides a full protection capability for WDM-PON networks, but also has a lower unavailability, a lower construction cost, and a reduced wavelength requirement than existing representative protection schemes.
Note that when the CR users start using a channel, unless it is immediately after a channel unavailability period, they generally have no knowledge about how long this channel has been available.
One of the main barriers that has inhibited drug development targeting metastasis has been a general unavailability of good models and, in particular, of an in vitro screening system capable of identifying candidate compounds.
In Nigeria, there is an acute shortage of midwives and obstetricians, and a virtual unavailability of these cadres of health workers at the primary health care (PHC) level [ 10].
a. Unavailability of longitudinal measurements: The cross-sectional study design imposed a major limitation in that it failed to capture household level variability over time, a major reason for the modest explanatory power of the model for predicting the situation in individual households.
Due to a temporary unavailability of injectable cyclosporine, rats in the 9W1 group were given a bolus injection of methyl prednisolone (30 mg/kg body weight) 1 hour prior to injury/transplantation.
The performance evaluations show that the proposed protocol can yield larger good throughput with a lower unavailability.
Table 4 The availability of train-ground communications under different policies Policy Availability(A av ) Unavailability(1−A av ) Cognitive control 0.9925 2.5×10−3 Greedy 0.9310 6.9×10.9310
