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Volume 47 (2000)
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Volume 47, Issue 1
Displaying 1-8 of 8 articles from this issue
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Eunja Kim, Hidetaka UnoArticle type: Article
2000 Volume 47 Issue 1 Pages 1-8
Published: May 31, 2000
Released on J-STAGE: July 21, 2017
JOURNAL FREE ACCESSThe galley space is compactly designed as multifunctional closet. It gives, however, stewardesses heavy workload. We get quantitative analysis of their workloads for improvement. In this article, we investigated the action putting items up to the high position, which often brings them lumbago. We measured the muscular workload during storing action with EMG. The comparison with the every muscle showed that they had various characteristics because of the difference of the posture of operations and the actions depending on closets. Moreover, we measured the Rate of Maximum Strain and the angle of the action putting items up to the high position, and considered the relation between the height and them. We noticed that shorter persons are more obliged to the maximum strain. Finally, we tried evaluation of the spatial difficulties on the galley space.View full abstractDownload PDF (1324K) -
Eunja Kim, Hidetaka UnoArticle type: Article
2000 Volume 47 Issue 1 Pages 9-14
Published: May 31, 2000
Released on J-STAGE: July 21, 2017
JOURNAL FREE ACCESSThe present study investigated a cart which is one of important compositions of the galley space. As a result, it proved that a cart had such various roles in the galley space as a closet or carrying "things" or an operation stand. However, the questionnaire listed many negative points and improvements about a cart. Also, some dead space in the galley space said to be narrow was found from video analysis or research on things in a cart. This result gave us the possibility of carrying out our purpose of reconstructing the new galley space which is more compact and with less workloads while keeping the present function. Moreover, we measured and studied the load of low back muscles on cart focusing. Also, concerning placing things to a cart, we studied the relation between the posture of operations and the muscle loads.View full abstractDownload PDF (1237K) -
Yasushi Takahashi, Keisuke Hasegawa, Kazuo Sugiyama, Makoto WatanabeArticle type: Article
2000 Volume 47 Issue 1 Pages 15-24
Published: May 31, 2000
Released on J-STAGE: July 21, 2017
JOURNAL FREE ACCESSAimed at describing story structures of movies and at utilizing them to retrieve, browse, edit and summarize movies, "Semantic Score Method" which evaluates scenes of a movie as semantic units of its story was proposed. Through analysis of fifteen "Semantic Graphs" of movie titles in five genres, a clue to extract their important scenes was found and four character functions of the graph were introduced as follows ; scene ratio of the highest complication, complication ratio of the last scene, the average duration time of scenes, and fractal dimension. The typical Semantic Graph patterns in each genre are settled on as follows ; action type : "Slant type", drama type : "Mountain type", comedy type : "Plateau type", love-story type : "Right sided mountain type", and fantasy type : "Mountain range type". Discriminant analysis of fifteen movies with four character functions showed effectiveness of the Semantic Score Method on describing a story structure of a movie.View full abstractDownload PDF (1505K) -
Ikuo Naito, Yoshihiro Fujii, Seigo Yasutake, Masao Iioka, Katuko Kanek ...Article type: Article
2000 Volume 47 Issue 1 Pages 25-34
Published: May 31, 2000
Released on J-STAGE: July 21, 2017
JOURNAL FREE ACCESSWe selected four colored chips with constant hue and chroma values in 7 colors to study effects of lightness on perceived qualities of coated surface (such as, gloss sense, transparent sense, deepness sense, thickness sense, metallic sense, planarity sense, silkiness sense). We investigated those qualities by means of a rank test of 25 girl students. The Muncel value affects the perceived qualities except the gloss sense. The transparent sense, the planarity sense and the silkiness sense increase with increasing the Muncel value of the color chip. On the other hand, the deepness sense, the thickness sense and the metallic sense decrease with increasing the value. We detected also the effects of hue on perceived qualities, as the transparent sense, the deepness sense and the planarity sense are detectable strongly in bluecolor chips, although the silkiness sense is independent of hue.View full abstractDownload PDF (975K) -
Terumi Shiraishi, Yoshiyuki Fukouzu, Tomio Yoshida, Akira ItohArticle type: Article
2000 Volume 47 Issue 1 Pages 35-42
Published: May 31, 2000
Released on J-STAGE: July 21, 2017
JOURNAL FREE ACCESSIn the former report, we proposed visual space transfer model F_<(1)>, which replaced multi inhibition layers by one layer on the basis of psychological experiments. In this report, we tried to confirm the effectiveness of this model by experiments on Muller-Lyre's illusion, using a method of Thurstone's paired comparison to measure the psychological amount of the illusion. On one hand, the figures used experiments were analyzed by the model F_<(1)>. So we assumed that the distance between the heighest F_<(1)>'s potential points of the figures showed length of the illusion. As a result, we got a very good agreement between theoretical and experimental values. Furthermore we tried the other figures changed the shape of original M.L.'s figure (without a main line of the object), and also got the same results as mentioned above. So we could confirm the effectiveness of the new model F_<(1)> which predicted correctly the amount of the M.L.'s illusion, qualitatively and quantitatively.View full abstractDownload PDF (1162K) -
Yoshiyuki Matsuoka, Hiroki YonekawaArticle type: Article
2000 Volume 47 Issue 1 Pages 43-48
Published: May 31, 2000
Released on J-STAGE: July 21, 2017
JOURNAL FREE ACCESSThe wheelchair transporting apparatus has been noticed as one of the aids for personal mobility. The present study focused on riding comfort of this apparatus, and aimed at understanding vibration characteristics of the Human body-Wheelchair system. For the purpose, the present study adopted experimental modal analysis method, and clarified the modal parameters which indicated vibration characteristics of the apparatus. First, frequency response functions between 1 and 15Hz were obtained through an exciting experiment. Secondly, 2.51Hz, 4.63Hz, 7.10Hz, 8.31Hz were extracted as natural frequency by appropriate curve fitting. As a result, the modal parameters were clarified. In addition, vibration characteristics of the apparatus and vibration sensation characteristics were investigated. As a result, it is suggested that reducing 4.63Hz, 7.10Hz vibration of the natural modes takes good effect to improve the riding comfort.View full abstractDownload PDF (1433K) -
Yoshiyuki Matsuoka, Hiroki Yonekawa, Kohei KawaiArticle type: Article
2000 Volume 47 Issue 1 Pages 49-56
Published: May 31, 2000
Released on J-STAGE: July 21, 2017
JOURNAL FREE ACCESSOn comfort design of the wheelchair transporting apparatus, modeling a system and simulating its quantitative movement is an effective support method. This paper aims at constructing a vibration simulation model of human body-wheelchair system. First, human body-wheelchair system was modeled as a seven degrees of freedom model consisting of masses, springs and dampers in two dimensions, and then the equation of motion was formulated. Secondly, unknown physical parameters on the system were clarified with the modal parameters obtained through the previous experiment. The identified model was proved to be valid by the fact : the result of simulation corresponded with the actual movement measured in the experiment. In addition, model simulations were practically performed by varying the physical parameters. As a result, the constructed model is verified to be valuable for design.View full abstractDownload PDF (1202K) -
Hiroki Yonekawa, Hiromu Aihara, Yoshiyuki MatsuokaArticle type: Article
2000 Volume 47 Issue 1 Pages 57-64
Published: May 31, 2000
Released on J-STAGE: July 21, 2017
JOURNAL FREE ACCESSThe data from evaluation of riding comfort could be valuable for designing wheelchair transporting. This paper aims at clarifying the relations between vibration and evaluation. The vibration experiment with human bodywheelchair system was performed with an exciter in order to measure subjective evaluation and vibration on the floor and on human body. As a result of analysis, multiple regression equations that predict evaluation from vibration on the floor or on human body are obtained. The predicting method and the evaluation criteria are presented with the equations. Moreover, vibration in the updown direction on upper part of torso is closely related to evaluation on human body. Prediction of evaluation from the vibration on the part is valuable because of the correspondence to vibration sensation. In summary, the method that predicts evaluation from the design is constructed. The method is available to the design for riding comfort.View full abstractDownload PDF (1451K)
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