Title	Methods of Mathematical Modelling for Signal Distortion Diagnostics in the Information Channels
Author	Ahmad AbdulQadir AlRababah
Citation	Vol. 19  No. 10  pp. 56-65
Keywords	mathematical modeling, information channels, signal distortions, information reliability, degree of deterioration, signal quality.

Title	Underpinning Theories of Software Engineering: Dynamism in Physical Sources of the Shannon?Weaver Communication Model
Author	Sabah Al-Fedaghi
Citation	Vol. 20  No. 9  pp. 120-131
Keywords	Conceptual modeling; mathematical modeling, information; system decomposition; diagrammatic representation.