The phrase "a lack of usable" is correct and usable in written English.
It can be used when discussing the absence of something that is functional or practical in a given context.
Example: "The project faced significant delays due to a lack of usable resources."
Alternatives: "a shortage of functional" or "an absence of practical".
But there still is a lack of usable urban design guidelines.
Although they are of pivotal importance in evidence-based medicine, there is a lack of usable information systems providing data-analysis and decision support capabilities for aggregate clinical trial results.
There has been a lack of usable consumer information from institutions, and many who have preyed on our service members and veterans.
They said work on concluding the identification process was hampered by a lack of usable DNA profiles and because not all remains had been collected from the crash site.
This finding is similar to a previous study by Ely et al., who reported that physicians did not seek answers to many of their questions (55%), often suspecting a lack of usable information [16].
Therefore, in our model, a nursing shortage will manifest itself as a lack of usable beds.
This method is limited when the terrain is mountainous and covered with foliage and trees and if there is a lack of clear existing usable targets.
While researchers show significant interest in finding better Android testing approaches, there is still a lack of effective and usable techniques to evaluate their proposed test selection strategies, and to ensure a reasonable number of effective tests.
HFs faced common challenges impeding the rollout of eMTCT including; inadequate skilled staff, lack of usable space for a fully functional clinic, limited laboratory and medical equipment, and inadequate financial commitment for providing necessary upgrades.
These would be a small category of detainees who the government determines are a significant security threat but cannot be tried because of the lack of usable evidence.
Re "Panel Misses a Deadline in Reviewing Guantánamo" (news article, July 21): Citing unnamed Obama administration officials, you report that the administration is considering proposals for the "indefinite detention" without charge or trial of Guantánamo detainees "who the government determines are a significant security threat but cannot be tried because of the lack of usable evidence".
