Evaluation and Design of Alphabetic Communication Boards
| Autor: | David John Williams |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Applied Mathematics. :125-129 |
| ISSN: | 2152-7393 2152-7385 |
| DOI: | 10.4236/am.2016.72011 |
| Popis: | Communication boards provide a low-cost means of facilitating communication with patients who are unable to speak; however the process is slow and frustrating. A computer model was used to calculate the cumulative frequency-weighted path length for letter selection (“chart index”) for three conventional communication boards using different search strategies; and exhaustively generate and evaluate designs for a novel communication board based on a frequency-ordered arrangement of letters. For all arrangements, a 46% to 53% reduction in chart indices was achieved when “2 Dimensional” (2D) rather than “1 Dimensional” (1D) search strategies were employed. A further 23% to 30% reduction in chart indices was achieved through use of frequency-ordered sequences with optimal row groupings. Conventional communication boards can be used more efficiently by employing a 2D search strategy. Novel communication boards based on optimised arrangements of frequency-ordered letter sequences potentially provide a faster means of communication than conventional communication boards. |
| Databáze: | OpenAIRE |
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