Human factors and ergonomics (HF&E) is a multidisciplinary field incorporating contributions from psychology, engineering, biomechanics, mechanobiology, industrial design, graphic design, statistics, operations research and anthropometry. In essence it is the study of designing equipment and devices that fit the human body and its cognitive abilities. The two terms "human factors" and "ergonomics" are essentially synonymous. Source: Wikipedia (http://en.wikipedia.org/wiki/Ergonomics)

Salvendy, Gavriel

Gavriel Salvendy (born September 30, 1938) is a pioneer in the field of human factors and ergonomics, and the first one in this field elected to the National Academy of Engineering. At present, he is a professor emeritus of Industrial Engineering at Purdue University and Chair Professor Emeritus and Former Head (2001-2011) of the Department of Industrial Engineering at Tsinghua University.

Source: Wikipedia

Pictograms, symbols and icons to assist users of the telephone and telefax services

The purpose of this Recommendation is to identify pictograms, symbols and icons that could be used to aid users in the identification of services available and then in the use of such services. The revisions to this Recommendation include new symbols and pictograms, developed in close collaboration with the International Electrotechnical Commission (IEC).

The international telecommunication charge card

Telecommunication charge cards may be issued by Operating Agencies (OAs) to allow customers to use their card in connection with various international services at appropriate charges for each transaction and have the charges billed to their account in the country where the OA issued the charge card. Cards issued by OAs in accordance with this Recommendation conform to the appropriate ISO standards.