All issues
Volume 30, Issue 6
Displaying 1-11 of 11 articles from this issue
- |<
- <
- 1
- >
- >|
-
Hidetomo ICHIHASHI1994 Volume 30 Issue 6 Pages 355-358
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSDownload PDF (532K) -
Shigekazu ISHIHARA, Mitsuo NAGAMACHI1994 Volume 30 Issue 6 Pages 359-365
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSDownload PDF (1092K) -
Michitaka HIROSE1994 Volume 30 Issue 6 Pages 367-371
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSDownload PDF (7125K) -
Yoshitaka OKUHATA, Yoshiaki TANAKA1994 Volume 30 Issue 6 Pages 373-376_1
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSDownload PDF (11737K) -
Mamoru UMEMURA1994 Volume 30 Issue 6 Pages 377-380_1
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSDownload PDF (7809K) -
Hirohiko MORI, Yosuke KINOE1994 Volume 30 Issue 6 Pages 381-387
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSDownload PDF (2561K) -
Evaluation of mental workload by fractal dimensionAtsuo MURATA1994 Volume 30 Issue 6 Pages 389-393
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSIn this paper, an attempt was made to evaluate mental workload by the fractal dimension of R-R intervals. With the increase of the work level, the evaluation on mental workload obtained by the method of paired comparison increased. In accordance with the increase of mental workload, the fractal dimension of R-R intervals increased. It was suggested that the higher the fractal dimension was, the more complicated the fluctuation of R-R intervals became. Therefore, it is concluded that the method to study the nonlinear dynamics underlying the fluctuation rhythm of R-R intervals by the fractal dimension can be used to evaluate MWL.View full abstractDownload PDF (714K) -
Koji SHIBUYA, Shigeki SUGANO, Ichiro KATO1994 Volume 30 Issue 6 Pages 395-403
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSHuman can perform many complicated works by dexterously controlling position and force of his hands with finger-arm coordination. This paper aims to clarify the skills of finger-arm coordination by analyzing human bowing motion in violin playing which is regarded as one of the examples of finger-arm coordination. In this paper, “skill” means the strategy for the finger-arm coordination. In the experiment, down-bow which is the most basic play in violin playing is played with three different bow pressure and bow velocity by two professional players, two students in academy of music and two inexperienced persons. The bowing motion are measured by 3D-Video Tracker System, and the bow pressure is measured by strain gauges on the bow. From the analysis of the motion, it is clarified that professional players and students use their fingers and wrists effectively more than inexperienced persons, and that professional players can change their motion of fingers and wrists according to the change of the bow pressure and the bow velocity more flexibly than students can do.View full abstractDownload PDF (6000K) -
Tetsuya HASEGAWA, Masaharu KUMASHIRO1994 Volume 30 Issue 6 Pages 405-413
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe relation between the length of working hours in one continuous sedentary work and efficiency was experimentally investigated in subjects assigned to do a data entry work with different length of break hour or with different type of work i.e. sorting work. For the data entry work, subjects were asked to do multiplication of one-figure numbers and to feed their answers into a computer by key operation. The work consisted of 60 minutes, either without break at all (condition A) or with a break (condition B) or sorting work (condition C) allotted at intervals of every 30, 20, 15 and 10 minutes. The CFF variation patterns of the data entry work for 60 minutes without a break were similar to those of CFF variation reported as in the case of a monotonous-shaped work. The interpositioning of a sorting work provided subjects a feeling of relief to get away from monotony. It was found that inserting different type of work was more effective to enhance the working efficiency than rests. The introduction of a sorting work, however, resulted in increase of the reaction time and delayed of recovery in CFF value after work.View full abstractDownload PDF (5307K) -
Tsutomu KONOSU, Tadahiko FUKUDA1994 Volume 30 Issue 6 Pages 415-421
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe usefulness of ATM (Automatic Teller Machine) was evaluated by analyzing the eye movement of the user. An experiment took stimulus which described the present ATM display and reproducted it on paper; this was shown to subjects and their eye movements were measured. The result suggests that the following factors make ATM inconvenient: (1) Too many choices; (2) Incomprehensible choices; (3) Unclear devision between “banknote” and “bankcard”; (4) Intermingling of vertical writing with lateral writing. The amount of information was calculated according to the concept of information theory. There are interrelations between searching time and amount of information. On the other hand, there are the pattern had a high information and a short searching time. When highlighted choices were shown to the subjects a reduction in searching time was observed. In this study, the better ATM presentation method was made proposed.View full abstractDownload PDF (1002K) -
Tsuyoshi HORIO, Yojiro KAWAMURA1994 Volume 30 Issue 6 Pages 423-430
Published: December 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSRelationships between the length of chopsticks and the action time in manipulation with various ingredients were examined. In case of picking and carrying soybean and raw carrot, the manipulating time was not so influenced by the length of chopsticks. However, it took longer time to perform picking and carrying bean curd with the shorter chopsticks than that with longer chopsticks. In case of tearing steamed fishpaste and cutting sausage the longer chopsticks needed longer time to perform the task than that with shorter chopsticks.
The holding finger location of long chopsticks moved forward to the tip of chopsticks at the end of action except carrying bean curd. In case of short chopsticks, the holding finger location moved to the end of the chopsticks only in the case carrying bean curd. The EMGs of arms and pressure between fingers and chopsticks showed the stable pattern in the conventional holding of the chopsticks. These results suggest that the action of manipulations are influenced by the length of chopsticks.View full abstractDownload PDF (2366K)
- |<
- <
- 1
- >
- >|