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

Biomechanical analysis of lifting actions for nursing
論文掲載日:2004/04/01  第4巻
論文著者:
Tadao ISAKA, Kenji SHIGETSHI, Ritsumekan University
Yasuhiro HAYAKAWA, Nara National College of Technology
Sadao KAWAMURA, Ritsumekan University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 4, No. 1, 8/12, 1999.

This study was designed to obtain the basic information about the machine of nursing and instruction methods of lifting actions for nursing. The subjects who participated in this study consisted of one skilled person working in a hospital and two unskilled students. They were requested to perform the nursing lifts in some conditions such as in case of low or high height beds. From the comparison between the skilled and unskilled persons, the characteristics of lifting actions in the skilled person were shown as follows; (1) the skilled person utilize the larger range of motion in the knee and hip joints, (2) the skilled person could reduce the vertical load (Fp) by the increasing the impulse in the horizontal plane, and (3) the muscle activities in the lower limb were totally used in well-balanced without a local intense muscle activity by using the multi-joint movement shown in the skilled person. From the obtained results, it is necessary to consider the teaching system of the technique in efficient lifting movements, and to develop the lifting machine which have a interface between nurses and patients.

Keywords: Lifting for nursing, Joint kinematics, Ground reaction force, Biomechanics
ダウンロード回数:136 回
Perception of apparent depth in stereogram: an effect of horizontal rotation of cube on apparent depth
論文掲載日:2004/04/01  第4巻
論文著者:
Tesuya KAJITANI, Bunka Women’s University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 4, No. 1, 1/7, 1999.

The experiment in this paper gives clear examples showing two cubes of different depth. Apparent depth is regarded here as the degree of recognizing the difference of two objects. The objects, cubes in this case, are deformed in depth in increments of 0.5% to  2%. Using this method, two kinds of experiments were carried out, namely, one using a pair of stationary cubes and the other using a pair of rotating cubes. The test was conducted on 30 average females of age between 10 and 23.
As a result, they could better recognize the difference of depth on a pair of rotating cubes than stationary ones.

Keywords: Stereopsis, Apparent depth, Motion parallax, Parallax, CAD, Computer
ダウンロード回数:117 回
Human engineering technology applied to the international space station
論文掲載日:2003/11/01  第3巻
論文著者:
Takao YAMAGUCHI, National Space Development Agency of Japan
論文概要:
Review article
Appeared on Ergonomics of Human System Interaction Vol. 3, No. 2, 26/34, 1997.

Crew members are exposed to many stress factors on orbit that they have not been exposed to or rarely encounter on the earth. The unique characteristics of the space environment, form a physical view point, are ‘vacuum environment’ and ‘zero gravity environment’. From a psychological view point, these characteristics are ‘isolation (physical/social)’ from the earth and ‘confinement’ in which crew members cannot easily escape from the space ship. Human engineering technology contributes significantly to the International Space Station (ISS) development by establishing counter measures for crew members. This paper specifies the applicability of the human engineering for the ISS considering the neutral posture of the crew member in zero gravity. It also clarifies guidelines for human engineering application to future manned space systems taking into account the experience gained form the ISS development.

Keywords: Zero gravity, Human engineering, International space station, Space environment
ダウンロード回数:116 回
Wireless power transmission system for electrical stimulation
論文掲載日:2003/11/01  第3巻
論文著者:
Shigeto IKEDA, Faculty of Science and Technology, Keio University
Naofumi TANAKA, Tsukigase Rehabilitation Center, Keio University
Satoshi HONDA, Faculty of Science and Technology, Keio University
論文概要:
Technical note
Appeared on Ergonomics of Human System Interaction Vol. 3, No.2, 9/13, 1997.

To investigate effects of long-term stimulation upon rat’s skeletal muscles, we developed a magnetically coupled wireless signal transmission system. The system consists of a stimulation pulse generator and a transmission coil outside the cage, and a receiving coil and electrodes implanted in a rat. By using an ac bridge circuit in the transmission side, the stimulation current was monitored from the outside. Following the stimulation, cross-sections of stimulated and contralateral TA muscles for NADH-TR were analyzed and found the fiber type transmission.

Keywords: Electrical stimulation, Rat, Muscle, Wireless, Coil, Fiber type transmission
ダウンロード回数:142 回
A study of wide-angle perspective
論文掲載日:2003/11/01  第3巻
論文著者:
Tetsuya KAJITANI, Bunka Women’s University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction Vol.3, No.2, 1/8, 1997.

To represent an object in wide angle, in general, the projection center is placed near the object and the perspective method is applied to compose a wide-angle representation. However, spaces such as kitchens are difficult to express in full through the use of conventional perspective methods. In such cases, irregular perspective drawings are sometimes prepared. However, that preparation is often dependent on the unique experience-based techniques of the designer. Therefore, we are proposing a method of perspective drawing preparation which can be used with existing CAD system and can represent even difficult spaces like kitchens. In this method, to prepare a wide-angle perspective drawing using a program (automatically) without changing the shape of the object, information concerning its depth (Z axis information) is exchanged with the information of the sides (X and Y planes) at the time that perspective transformation is performed.
In this report, we have incorporated independent parameters (ox, oy, oz) for each axis and parameters (dx, dy) for perspective exchange of the object centered on any point. In this way, the object (x, y, z) gives rise to a wide-angle perspective drawing (X*, Y*, 0).

Keywords: Computer, CAD, Perspective, Perceptual constancy, Visual angle, Wide-angle perspective
ダウンロード回数:113 回
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