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Volume 29, Issue 3
Displaying 1-10 of 10 articles from this issue
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Toyohiko HATADA1993 Volume 29 Issue 3 Pages 129-134
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
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Michitaka HIROSE1993 Volume 29 Issue 3 Pages 135-139
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
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Yukio FUKUI, Makoto SHIMOJO1993 Volume 29 Issue 3 Pages 141-146
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
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Hiroo IWATA1993 Volume 29 Issue 3 Pages 147-150
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
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Haruo TAKEMURA1993 Volume 29 Issue 3 Pages 151-155
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
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Tatsuru DAIMON, Hironao KAWASHIMA, Motoyuki AKAMATSU1993 Volume 29 Issue 3 Pages 157-165
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe aim of this study is to investigate fundamental characteristics of driver's behaviors when In-Vehicle Information System (Navigation System) or paper map are used for navigation. For this purpose, the driving simulator which has route selection and the performance to examine two-dimensional (direction and accelaration) tracking task of driver was designed. Responces of subjects were measured and evaluated using control performance of tracking task and dual-task method where auditory task as a secondary task, control performance of tracking task was measured and eye fixation time and eye fixation frequency were used in order to evaluate means for information display.
The results of the experiments indicate that the vehicular navigation system decreases the workload of route selection and eye fixation frequency is high and eye fixation time is long and imply that driving task with route selection is related to “memory”.View full abstractDownload PDF (1206K) -
Isao YOSHIMURA, Yasuyuki TOMODA1993 Volume 29 Issue 3 Pages 167-176
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThis paper describes integrated estimation and consideration of the fatigue happening period by the three sides-changes of physiological function, operation capacities, and investigation of subjective symptoms.
In this experiment, 15 subjects does continuously the combination VDT work comparison and reference for 90 minutes. For this time, each physiological functions in the system of vascular and the system of myotonic frames are expressed by standard score. So, it's possible to estimate the fatigue by the same scale and judge to the function changes clearly. Concretely, that is decided by the timephase transition of the standard score average and standard deviation.
As a result, judging the physiological function by standard deviation, that has the tendency to disorder the constancy clearly, at 40 or 50 minutes after the experiments started. While, judging by average, that tendency appeares at about 60 minutes.
Synthesizing these results, operation capacities, and investigation of subjective symptoms, it's possible to decide that scene as fatigue appearence period. At last, this way is considered effective.View full abstractDownload PDF (3252K) -
Shunshiro OHNISHI, Yutaka KURIOKA1993 Volume 29 Issue 3 Pages 177-184
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe intensities of five odorants of T & T olfactometer were estimated, by paired comparison method. Experiments are performed on the following two cases: 1) different concentrations of the same kind of odor, 2) different kinds of odors with the same concentration difference over the threshold. For five odorants β-phenylethyl alchol (A), methyl cyclopentenolone (B), isovaleric acid (C), γ-undecalactone (D) and skatole (E) of T & T olfactometer, series of concentration levels in power of two were used. Concentration level 0 corresponds to the threshold of normal human subjects while concentration level i corresponds to 2i times the threshold.
Results are as follows;
1) In comparisons of the same kind of the odorant, the relation between the intensity and concentration level were almost linear for odorants B, C, D and E. For odorant A, the relation was not clear for odors of concentration levels 1 to 5 over the threshold, but became linear when selecting odors of concentration levels 1 to 9 over the threshold.
2) In comparisons of different kinds of odorants, the orders of intensities of upper three odors C, E and B were depended on subjects, and concentration levels, while those of the lower two odors D and A the same.View full abstractDownload PDF (847K) -
Hirokazu YOKOI1993 Volume 29 Issue 3 Pages 185-195
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSIn this paper, the optimum-apportionment mode of word presentation time, for which words are most easily retained in short-term memory, have been determined, on the basis of the time-continuous model of short-term memory, when six randomly selected English words are sequentially presented in the same position. That is, by means of the recognition and free-recall experiments with English words, the constants included in the model have been at first determined. Secondly, the theoretical optimum-apportionment mode has been obtained from the model. Finally, a free-recall experiment has been conducted actually presenting six English words for the theoretical optimum-apportionment mode. Based upon the experimental result, the theoretical optimum-apportionment mode has been determined as the optimum-apportionment mode. This mode can be applied to the case in which six items, each of which expresses some indication or warning, or some situation or affair, are sequentially presented in the same position.View full abstractDownload PDF (1643K) -
Susumu SAITO1993 Volume 29 Issue 3 Pages 197-199
Published: June 15, 1993
Released on J-STAGE: March 11, 2010
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