People-focused knowledge management

CBT: See Computer-Based Training.
Certainty Factor: Either a number supplied by an expert system to
indicate the system’s level of confidence in the conclusion or a
number supplied by the user of an expert system to indicate the
user’s level of confidence in the validity of the information supplied
to the system.
Chunking: A mental activity that allows aggregating several (typically
five to nine) entities such as concepts into a single, new concept.
CKF: See Critical Knowledge Function.
CKFA: Critical Knowledge Function Analysis.
Closed System: A system-theoretic concept — a system that is 
isolated from its environment such that its final state is determined
by its initial state. Many physical systems are examples of closed
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systems that in addition have manipulated and observable input
variables that will change their states. The states of such closed
systems are “observable.” Hence they are “identifiable” and 
“controllable” in contrast to open systems.
Codification: Dealing with obtaining, characterizing, and validating
knowledge. It includes elicitation or acquisition, analysis, and syn-
thesis (rational reconstruction) of knowledge to generate internally
consistent knowledge models that are congruent with domain
knowledge as held by experts or existing as previously codified
bodies of knowledge.
Cognition: The act or process of knowing (Webster 1986).
Cognitive Engineering: A recently coined term to denote the profes-
sional field concerned with analysis and synthesis of systems which
interact with human cognitive functions. Cognitive engineering
encompasses human behavior in the real target world; ecological
aspects of that world; semantic contents of the target domain;
behavior and performance; and implications of changing cognitive-
related aspects of the target domain.