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題 名 | 以視障者測試我國現行硬幣的可觸辨性=An Evaluation Study on the Tactile Discriminability of NT Coins by the Visually Handicapped |
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作 者 | 許勝雄; 陳元和; 謝志光; | 書刊名 | 工業工程學刊 |
卷 期 | 15:4 1998.07[民87.07] |
頁 次 | 頁353-357 |
分類號 | 561.48 |
關鍵詞 | 硬幣辨識; 人因設計; 視障者; Coins discriminability; Ergonomics design; Visually handicapped; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以視障者為對象,深討現行流通硬幣的可觸辨性,並附帶探討1996 年發 行的新 50 元硬幣之盲人點字設計的效果。 在現行舊 50 元硬幣未回收情形下,36 位視障 高中生受試者 (男 20 人、女 16 人;年齡 15-22 歲 ) 對現行流通硬幣混用時觸覺辨識錯 誤率平均高達 20%,但若回收舊 50 元硬幣,則可大大降低其辨識錯誤率至 9 %。 現行流 通硬幣配對中, 由於新 50 元與舊 50 元硬幣厚度過於接近, 使得二者間辨識錯誤率最高 (15.3%),其次為新 50 元 /10 元與 5 元 /1 元兩兩配對之間的混淆。 至於新 50 元硬幣 上的點字設計,因其高度與硬幣凸緣相近,且為圓弧狀排列,致使盲人並未用作觸辨助具。 研究並發現直徑比與厚度比之乘積,可作為評估硬幣間觸覺可辨性之良好指標;此乘積值應 不小於 1.42, 硬幣配對方可具有合宜的可觸辨性,此數值將可作為未來硬幣改版設計時之 依據。 |
英文摘要 | The purpose of the study is to test the tactile discriminability of the existing Taiwanese coin system by the visually-handicapped and to evaluate the usability of Braille on the NT (New Taiwan) $50 coins released in 1996. Thirty-six near blind high school students (20 males and 16 females; ages between 15 and 22) were asked to identify and draw a coin with as assigned value from an opaque fabric bag. The results show that the error rate was as high as 20% under the co-circulation of both the old NT$50 and its new version. If the old version was invalidated and thoroughly recalled, the rate would be reduced to 9%. Among the pairings of actually usable coins, the most confused circumstance was found between these two $50 coins with 15% of the trials, owing to the similarity of their thickness. The pairings of NT$50 vs $10 and NT$5 vs. $1 came next confused. Braille did not help as a performance aid in this discriminating task. The students and their teachers revealed that the inconvenience resulted form its arc collocation, the same elevation of dots as the flange, and the masking effect of the continuous rim was so intense that it became a powerful "noise". In conclusion, the diameter contrast combined with the thickness contrast will be a suitabe index to predict the tactile discriminability of a coin system. In the case of the Taiwanese, we propose a value of less than 1.42. |
本系統中英文摘要資訊取自各篇刊載內容。