掲載論文閲覧:JETは専門家による査読のある、オープンアクセスの人間工学に関する科学雑誌です:Journal of Ergonomic Technology (JET)

Journal of Ergonomic Technology (JET)
ISSN 2432-1575

掲載論文閲覧

Determination of patterns in rolling-over movements by physical features of the elderly
論文掲載日:2008/03/01  第8巻
論文著者:
Manami NOZAKI, Toho University
Reiko MITSUYA, Hisashi KAWAI, Kageyu NORO, Waseda University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 8, No. 1, 1/6, 2005.

In this aging society, in order to prevent the elderly from becoming bedridden, it seems effective to encourage them to roll over by themselves more frequently. To this end, it is desired to establish the criteria for selecting rolling-over movements that are individually suited to elderly people based on the physical problems. This study aimed to determine roll-over patterns by physical features, targeting 40 persons aged 65 or over. The analysis by Quantification Method II has revealed that the important points for predicting the ability to roll over and the roll-over patterns are the ability to lift one’s lower back, activities in their daily lives, grip strength, and body weight.

Keywords: Roll-over pattern, Physical characteristic, Quantification method II, The elderly
ダウンロード回数:121 回
Determination of the roll-over patterns in bed based on the physical characteristics (First report)
論文掲載日:2006/02/01  第6巻
論文著者:
Manami NOZAKI, Toho University
Goroh FUJIMAKI, Reiko MITSUYA, Yoshichika EBARA, Kageyu NORO, Waseda University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 6, No. 1, 9/14, 2003.

The objective of the present study is to identify roll-over patterns observed in healthy individuals and to classify roll-over patterns based on their associated physical properties. Each healthy volunteer (n=26) was asked to roll over from the supine position to the lateral position. Based on videotape findings and shifts in the distribution of body pressure roll-over motions were described and divided into four patterns. The results of canonical discriminant analysis with dummy variables showed roll-over patterns could be differentiated based on eight physical properties. The resuts of the present study provide clues for selecting and recommending appropriate roll-over patterns in clinical settings.

Keywords Roll-over pattern, Physical characteristic, Canonical discriminant analysis with dummy variables
ダウンロード回数:111 回
Evaluating dual task user interface of in-car information tools by spatial auditor menu
論文掲載日:2007/02/01  第7巻
論文著者:
Hidenobu TAKAO, Hiroaki ISHII, Kanagawa Institute of Technology
Kageyu NORO, Waseda University
Jun OSUGI, Pioneer Corporation
Kaoru SAKAI, Waseda University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 7, No. 1, 1/8, 2004.

This paper proposed evaluation of optimum user interface (UI) by auditory communication between human and machine. In a former study, some types error loops of missing voice recognition was triggered by a distortion error. To solove this problem, 5 types of UI for voice control in-car information tools are evaluated. The five group consisted of (1) ‘non-feedback recognition result’ group, (2) ‘feedback recognition result’ group, (3) ‘a menu of three choices composed by recognition candidates’ group, (4) ‘feedback recognition result and guidance with defined spatial sounds’ group, and (5) ‘menu of three choices independently localized by spatial sounds’ group. An experiment was executed under the dual task environment in which operated a driving simulator and manipulated experimented voice controlled car navigation system. Two factors, achievement ratio and instability of car-speed control ratio were evaluated. As the results, the group number 5 was the best achieved of all conditions. This result suggests that spatially informed sounds will beneficial to elaborate and organize auditory information efficiently.

Keywords: in-car information tools, Voice control, Binaural sounds, Dual task, User interface
ダウンロード回数:118 回
Development of new ergonomic-mat with pelvic support (Ergo-Zabuton)
論文掲載日:2005/02/01  第5巻
論文著者:
Hideki OYAMA, Taku TERAOKA, Kageyu NORO, Waseda University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 5, No. 1, 11/18, 2002.

This paper presents a new ergonomic mat ‘Ergo-Zabuton’ with the pelvic support. It was developed in order to prevent the musculoskeltal disorders (MSDs) for floor seating. The feature of seating tool is following. In order to reduce the rear rotation of the pelvis, the pelvic support was put into use. The material is hard chipped cork. Cushion material is the polyurethane wrapped with soft polyester. There are differences between male and female in the Japanese floor-seated postures, therefore two models were developed. Its effectiveness was examined through the measuring of pelvic motion and subjective evaluation. The experiment demonstrated the advantages of ‘Ergo-Zabuton’ as being reduced rea rotation of pelvis, a posture that can be maintained over time and reduced fatigue of the upper body. The mat with pelvic support is proposed, as one of useful tool for the floor seating.

Keywords: Floor seating, Musculoskeltal disorders (MSDs), Pelvic support, Pelvis
ダウンロード回数:132 回
Calculation of a 3-dimensional sensitivity distribution of single difference, double difference, and concentric-ring systems
論文掲載日:2005/02/01  第5巻
論文著者:
Hiroharu ENDOH, Junichi USHIBA, Yoshihiro MURAOKA, Keio University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 5, No. 1, 7/10, 2002

The sensitivity distribution of single differential (SD), double differential (DD) and concentric-ring (CR) systems were computed in a homogeneous, anisotropic semi-infinite volume conductor model. The results of the calculation showed that the DD and CR systems had higher spatial selectivity than that of the SD system.

Keywords: Sensitivity distribution, Double differential, Concentric-ring system, Volume conductor, Anisotropy
ダウンロード回数:141 回
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