The phrase "active categories" is correct and usable in written English.
It can be used in contexts related to classification, organization, or systems where categories are dynamic or currently in use.
Example: "In our research, we focused on the active categories of consumer behavior to better understand market trends."
Alternatives: "dynamic categories" or "current categories".
Rats were classified into highly active and moderately active categories based on their baseline sexual activity as described earlier.
In a study of 288 498 participants in the European Prospective Investigation into Cancer and Nutrition which included baseline self-reporting of activity (inactive, moderately inactive, moderately active and active categories) plus baseline and follow-up objective measurement of weight and waist circumference, physical activity had no relationship with subsequent weight.
MGSA analyzes all GO terms at once by embedding them in a Bayesian network, in which gene response is modeled as a function of the activation of the GO terms and probabilistic inference is used to identify the active categories [ 33].
Wireless is one of the most active categories of advertising.
The most active categories in the Energy field are Engineering, Materials Science and Chemistry.
That far outpaces the other active categories, which include Education (2,472 new apps), Entertainment (2,378 apps), Business (2,247 apps), and Lifestyle (2,225 apps).
The "minimally active" category represents not sweaty/breathless activity ≥1 hour per week, and either no or <1 hour per week of higher-level activity (sweaty/breathless).
Active category constitutes 30 min of at least moderate intensity physical activity a day, on 5 or more days a week and <30 min a week is deemed as sedentary category [ 26 ].
But the paper shows that the share of the market in this highly active category has been falling, down from 60-70% in the 1980s to 20% today.
Some of the weapons to be removed from the active category will be dismantled, and some will go into the reserve category, meaning that they could be returned to readiness quickly; some of the weapons now in the reserve will be decommissioned, Mr. Cochran said.
Online travel continues to be an active category for innovation.
