Generally, biodegradable polymers can be categorized as either surface eroding or bulk eroding polymers.
The form of a cult of saints can be categorized as either indirect or direct.
The processes that accomplish all this can be categorized as either pyrometallurgy or hydrometallurgy.
These tumours can be categorized as either functional, non-functional, malign, or benign.
Most of today's consumed energy can be categorized as either electrical, chemical or thermal.
In general, eruptions can be categorized as either effusive or explosive.
Data from experiments or observations come in many forms and may be categorized as either qualitative or quantitative.
Most algorithms used to solve the matching problem can be categorized as either area-base techniques or feature-based techniques.
The transgendered in Ms. Bloom's book, including the intersexed, refuse to be categorized as either male or female, and defiantly celebrate their ambiguity.
Despite the many different species of bovids, their social organization can be categorized as either unsocial or social, and their mating system can be categorized as monogamous and territorial, polygynous and territorial, or based on a male dominance hierarchy.
All the optimization problems dealt with in this paper can be categorized as either minimizing the expected total system cost subject to system reliability requirements, or maximizing system reliability subject to total system cost limitation.
