The phrase "a class of activity" is correct and usable in written English.
It can be used to refer to a specific category or type of activities that share common characteristics or purposes.
Example: "The research focused on a class of activity that promotes environmental sustainability through community engagement."
Alternatives: "a category of activity" or "a type of activity".
Immediate early genes (IEGs), a class of activity-dependent genes, are rapidly and transiently induced by neuronal activation and other cellular or extra-cellular stimuli without the necessity for de novo protein synthesis (24, 25).
Broadly speaking, research "refers to a class of activities designed to develop or contribute to generalizable knowledge," while medical practice "refers to a class of activities designed solely to enhance the well-being of an individual patient or client" (Levine 1986, 3).
We define a number of "activity models", each composed of a pose space with unique dimensionality and an associated dynamical model, and each designed for use in the recovery of a particular class of activity.
Moreover, those rules emphasize that γCMC is important from the point of view of assigning new compounds into a good class of activity.
The study assesses the performance of different model checking tools, and strategies for converting activity diagrams into the tools input notation, for a class of real time activity diagrams used in medical device design.
This is a class of drugs with activity as monotherapy and in combination with treatments that cause DNA damage [ 4, 8, 38].
On the other hand, mainly for simplicity, but partly perhaps in order to subsidize basic but dangerous industries, a uniform contribution rate for all classes of activity has been established in several countries.
Where the essence of a statutory scheme is to forbid a given class of activities, it may not be enforced by requiring individuals to report their violations.
The first is that when a given class of activities is, in the main, made criminal by either state or federal law, an individual may not be compelled to disclose whether he engages in activities within the class unless his disclosure is compensated by the requisite grant of immunity.
On the other hand, he also takes it that there is a restricted class of activities that the soul is responsible for in some special way, such that it is not actually the case that the soul is responsible in this special way for all of the relevant activities that living organisms engage in.
We focus on a class of models where the activity is linear to understand the specificity of several learning rules (Hebbian, trace or anti-symmetric learning).
