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Volume 46 (2011)
- Issue 4 Pages 159-
- Issue 3 Pages 87-
- Issue 2 Pages 49-
- Issue 1 Pages 3-
Volume 46, Issue 3
Displaying 1-3 of 3 articles from this issue
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Original Paper
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Satoshi YONEKAWA, Makoto NAKANO, Yutaka KIKUCHI, Ei SEKI, Shunsuke OKA ...2011 Volume 46 Issue 3 Pages 87-94
Published: March 20, 2011
Released on J-STAGE: March 10, 2012
DOIhttps://njjn-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.4035/jsfwr.46.87JOURNAL FREE ACCESSInteractive multimedia agricultural work safety education software regarding springtime tilling by tractor was developed for use on a PC with mouse operation.
The scenes in the main part of this software are classified into 5 groups, and are composed of 19 individual scenes with associated questions. In individual scenes with questions, 98 questions are presented with scores of 1 to 5 per question, on a total of 78 question-and-answer screens. The results are ranked in 5 levels based on the score and displayed as a comprehensive evaluation, and the user can verify his/her awareness level regarding work safety.
To maintain the user’s motivation level, a variety of question and answer screens, such as multiple choice, image area selection, and specification of the correct sequence, were used. In addition, a total of 64 computer graphics (CG) movie clips with audio are played representing the contents of the answer, to increase the virtual reality experience and the feeling of being in a live situation. CG movie clips for wrong answers representing accidents intentionally used exaggerated expressions.
The software is intended for use as a safety training material, and 80% of the user base consists of organizations, such as regional agricultural extension centers. However, the effect of safety education was not consistent across generations, and thus further improvements are necessary.View full abstractDownload PDF (810K)
Research Papers
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Kazuhiro MATSUMORI, Toshiyuki CHIDA2011 Volume 46 Issue 3 Pages 95-105
Published: March 20, 2011
Released on J-STAGE: March 10, 2012
DOIhttps://njjn-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.4035/jsfwr.46.95JOURNAL FREE ACCESSWe conducted a questionnaire survey to the members of the “Agricultural Cooperative Kurikko” in Miyagi prefecture to collect reports of in-jury and incident experiences. Analyzed survey results will contribute to awareness activities designed to prevent injury during bush cutter operations.
For injury prevention, operators should start working after confirming that they are dressed properly with protective clothing such as gloves and safety shoes. To raise their level of consciousness and work with a feeling of attentive caution, breaks should be taken some 30 min after starting work. The break duration should be set by their proactive consideration.
When using back-pack type bush cutters, the function limiting the shaft rod return when kickback occurs, must be reviewed. Furthermore, the shape of the handgrip controlling the tool movement should be improved further. With shoulder-type units, we must investigate the effects of adjusting the belt length and loading attachments for stabilizing the cutting blade to prevent generation of shattered materials. For bush cutters of both types, operators appreciate the adjustability of the shape and the mounting position of the handgrip, which might alleviate fatigue, thereby reducing injury.
Information sharing is necessary for reducing injury. Any organization making frequent contact with many users must assume a social mission of providing users with available attachments and options, and assume the mission of transferring users’ opinions to manu-facturers. Such organizations must raise aware-ness of health and safety of operators by explaining in such publications tentatively entitled as “Booklet for Prevention of Accidents.”View full abstractDownload PDF (1063K) -
Takuo KOKURYU2011 Volume 46 Issue 3 Pages 107-114
Published: March 20, 2011
Released on J-STAGE: March 10, 2012
JOURNAL FREE ACCESSTo achieve high-speed seeding using the conventional inclined-cell-plate soybean seeder now on the market, we need to improve the lling of the holes in the cell plate with seeds. A laboratory experiment showed that the seeding rate (the number of seeds that reached the ground through the holes) increases as the peripheral velocity (PV) of the circle of the seed holes decreases, i.e. as the distance from the center of the inclined-plate to the seed holes. Also, increasing the number of seed holes (to 20-mm intervals) helps to lessen the PV. Furthermore, to achieve a high seeding rate, the seed-hole diameter should be twice the minimum of the average diameters, or 3 to 4mm larger than the maximum of the average lengths, of 100 seeds. The optimum plate thickness was determined to be 1mm thinner than the average seed diameter for large seeds, and the same as the average for small seeds. On the basis of these results, an inclined-cell-plate with 16 holes was made for use with a high-speed double feeder for large seeds and tested in the field. The seeding rate remained high when the PV was below 20 to 25cm/s, achieving a seeder working speed of 1.5m/s. This was twice the speed of the conventional inclined-cell-plate soybean seeder available on the market. We concluded that the new inclined-cell-plate can be used to improve working effciency of the soybean seeder.View full abstractDownload PDF (816K)
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