The phrase 'method were acknowledged' is correct and can be used in written English.
It can be used to express that a particular method was recognized or given recognition. For example, "The new training method were acknowledged as an innovative approach to the industry."
The provenance of the method is acknowledged in a blog post (Behavioural Insights Team 2014a, 2014b).
His circular variable method was acknowledged as a low-cost approach to simulating train system dynamics.
The advantage of digital orthopantomography in the interpretation of the tooth mineralization over the traditional method was acknowledged.
Hence, this method is acknowledged as being a 'greener' technology for the elimination of toxic organic and inorganic pollutants from wastewater at ambient temperature and pressure [11 13].
The personal delivery method is acknowledged to increase response rates as completed responses can help (a) establish rapport with respondents while introducing the survey, (b) provide clarifications if needed quickly, and (c) collect the questionnaire immediately (Cavana et al. 2001).
This method is acknowledged to be inappropriate because many malignant tumours show markedly heterogeneous areas of enhancement.
Provided that the limitations of the semiquantitative method are acknowledged, the use of spontaneous sputum therefore offers pneumology-specialized general outpatient clinics a simple and economic way to support the diagnosis of airway diseases by yielding clues on airway inflammation.
Various methods were used in the tools, including persuasive communication, self-re-evaluation, modeling, goal-setting, and mobilizing social support; parameters for these methods were acknowledged.
The limitations of such informal methods were acknowledged.
Their corresponding heating efficiencies were acknowledged through infrared camera.
