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Volume 41, Issue 5
Displaying 1-7 of 7 articles from this issue
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Daisuke SATO, Masaaki KUROSU, Masaaki TAKAHASHI, Hideaki TAKAHASHI2005 Volume 41 Issue 5 Pages 269-281
Published: October 15, 2005
Released on J-STAGE: March 15, 2010
JOURNAL FREE ACCESSCorresponding to the needs of various industries where designing products with high usability is of great concern, the competence required for usability specialists were investigated by employing following inquiring methods. First version of the list of usability competence was created by conducting semi-structured interviews twice with managers of usability-related industries. Then, this list was confirmed and analyzed by questionnaire method. This resulted in the second version of the list of usability competence comprised of 54 items that were classified into five types with three importance levels. The result of this study also shows that there are differences in required competence between managers and engineers, and the same list of competence can be applied to a wide variety of industry types and job types.View full abstractDownload PDF (14564K) -
Kouki DOI, Rie ODAWARA, Mieko HAYASHI, Hiroshi FUJIMOTO2005 Volume 41 Issue 5 Pages 282-288
Published: October 15, 2005
Released on J-STAGE: March 15, 2010
JOURNAL FREE ACCESSRecently, Transparent-resinous-ultraviolet-curing-type Braille (TRUCT Braille) signs have gained popularity in Japan for printing Brailles together with visual characters and they can be printed on the various base materials on which Braille dots are printed. However, it has been pointed out that TRUCT Braille reading is affected easily by the friction between the forefinger and the base material. In this study, for the purpose of investigating the effect of the forefingers' slipperiness to TRUCT Brailles' discriminability, we compare their discriminability with and without wearing the finger cover. We attempted a use of finger cover made by plain-weaved nylon to reduce the friction. The reason why we chose the nylon is its durability and its ability to absorb moisture that enlarges the friction. The participants of this experiment are beginners of Braille reading with normal vision. They were asked to discriminate 6 TRUCT Braille characters. The results show that most participants can discriminate them significantly faster with the finger cover than without it. From this study, it is found that the TRUCT Brailles' discriminability is influenced by the forefingers' slipperiness and it becomes easy to discriminate them with wearing finger cover.View full abstractDownload PDF (5811K) -
Kazuya TSUNESADA, Yasuhiro KAJIHARA, Hirokazu OSAKI, Yoshiomi MUNESAWA2005 Volume 41 Issue 5 Pages 289-296
Published: October 15, 2005
Released on J-STAGE: March 15, 2010
JOURNAL FREE ACCESSAn image processing method is proposed for ensure person's safety and health care. In the house, because illumination conditions change as time and weather. So, an image of the person is detected by the optical flow procedure. Next, six factors are introduced in order to distinguish and represent postures and positions of the person. Those six factors of various motions are analyzed by the principal component analysis. Results are plotted in a three dimensional eigenspace in the scatter chart. Next, ranges of principal component values of each motion are approximated by cylindrical spaces and used them as discriminant standards to recognize motions. Then, some activities of daily living are distinguished from the change of time series of principal component value in the eigenspace.View full abstractDownload PDF (13121K) -
Masaomi KIMURA, Hiroyuki FURUKAWA, Hitoshi TSUKAMOTO, Hisao TASAKI, Ma ...2005 Volume 41 Issue 5 Pages 297-305
Published: October 15, 2005
Released on J-STAGE: March 15, 2010
JOURNAL FREE ACCESSRecently, the safety of use of medicine have attracted a lot of attention. It is, however, not necessarily that people share the same opinion, since a medicine has a relationship with many interest groups, such as doctors, pharmacists, nurses, and patients. In this paper, a text-mining method is applied to analize the free description part of the questionnairs about the safty of use of a transdermal patch.
First, a clustering algorithm is applied to the head-words in segments of sentences, which were obtained by morphological analysis of the answers. Using the results, we clarified the differences in viewpoint on the safety of drug-use between these groups at the word level.
Second, a method of extracting the sentences of the responses, which appear more than twice in the answers of the questionnairs is proposed. The multi-web graph based on the information obtained by Japanese dependency structure analysis provide the sentences by properly sorting and connecting the links between morphemes in the graph.
Last, this method is applied to answers by each group so as to find differences in beliefs at the sentence level and extract opinions and requests which each group has.View full abstractDownload PDF (5537K) -
Takahiko ONO, Hikaru INOOKA2005 Volume 41 Issue 5 Pages 306-313
Published: October 15, 2005
Released on J-STAGE: March 15, 2010
JOURNAL FREE ACCESSIn emergency transportation, a patient receives acceleration in various direction. Particularly, the longitudinal and lateral acceleration causes the blood pressure variation and the roll of a patient's body, which result in a feeling of discomfort. To reduce such bad effect of acceleration acting on a patient, the actively-controlled beds for ambulances have been developed. This paper reports the effects of these beds in actual situation in terms of cancellation rate of acceleration and ride quality. First, taking examples of Sendai City in Miyagi, the statistical information on arrival time to hospital and acceleration acting on a patient is shown. Then, by using the actual driving data of ambulance, the cancellation rate of acceleration and the improvement of ride quality, which are achieved by the actively-controlled beds, are examined by numerical simulation.View full abstractDownload PDF (9658K) -
Daisuke DOYO, Keisuke SHIDA, Toshiyuki MATSUMOTO, Takashi KANAZAWA2005 Volume 41 Issue 5 Pages 314-321
Published: October 15, 2005
Released on J-STAGE: March 15, 2010
JOURNAL FREE ACCESSMany researches about skills have been mainly concern about complex works and little researches have been for simple tasks. In this paper, an investigation of the skill level of E-ring insertion operation is conducted for 63 workers who had different working experience. From this investigation, following four characteristic values were adopted as an evaluation index; such as (1) Maximum Overrequired Pressure, (2) Total Pressure [insertion period], (3) Total Pressure [after insertion period] and (4) Maximum Holder. As a result of the investigation, it was revealed that there were differences on the skill level even if it is easy work like E-ring insertion operation and work experiences had little effect on improvement of the skill level. Operation of workers was analyzed in terms of three-classified groups divided by depending on their skill levels. It was pointed out that the education of expertise knowledge, the training of basic skills and the training of practical skills were necessary according to their skill levels to improve the E-ring insertion operation efficiency.View full abstractDownload PDF (10966K) -
Contacted position with thumbNobuaki NAKAZAWA, Yuka YOSHIHARA, Ayumi FUJINOKI, Toshikazu MATSUI, Is ...2005 Volume 41 Issue 5 Pages 322-324
Published: October 15, 2005
Released on J-STAGE: March 15, 2010
JOURNAL FREE ACCESSDownload PDF (4981K)
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