There are multiple definitions:

1. attachment Q-set(English)

   • proposed as an economic alternative to Ainsworth’s observational methodology, one that allows for efficient descriptions of secure base behavior in infants and children, and affords more analytical alternatives. The AQS allows researchers to describe the functioning of the attachment behavior control system. In brief, it assesses how characteristic secure base behavior is during infant/child–caregiver interactions. The AQS can be used with children aged between 1 and 5 years
   • AAI
   • Pediatrics, Behavior(al science)
   • https://doi.org…70877-9.00012-8

2. Attention Questionnaire Scale(English)

   • AD, MMSE
   • Alzheimer's disease, Questionnaire, Scoring systems/scales, Gerontology/Geriatrics
   • https://doi.org…JAD-2011-100660

3. air quality system(English)

   • contains ambient air pollution data collected by EPA, state, local, and tribal air pollution control agencies from over thousands of monitors. AQS also contains meteorological data, descriptive information about each monitoring station (including its geographic location and its operator), and data quality assurance/quality control information
   • EPA, PM2.5
   • Environment, Air pollution, Legal issues
   • https://www.epa.gov/aqs

4. anthraquinone-2-sulfonate(English)

   • an acid ester that could improve the rate of electron transfer to the extracellular space
   • Environment
   • https://doi.org…res.2023.115997

5. Assessment of Quality of life Scale(English)

   • a self-administered functional impact questionnaire
   • ALIF, ODI, QWB, SFCR, SF-12, SIP, SVA, TLIF
   • Quality of life, Scoring systems/scales, Questionnaire
   • https://doi.org…tsr.2014.07.006
   • https://doi.org….1002/acr.20541