JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY, JAPAN
Online ISSN : 2759-8322
Print ISSN : 0918-5283
ISSN-L : 0918-5283
Volume 33, Issue 2
Displaying 1-2 of 2 articles from this issue
  • Sadayuki HAYAKAWA, Saki JINZENJI, Sohei HASHIMOTO, Shin-Ichi KAWAKAMI
    2024Volume 33Issue 2 Pages 119-129
    Published: April 01, 2024
    Released on J-STAGE: June 12, 2025
    JOURNAL FREE ACCESS
    The study of rocks in elementary and junior high schools includes observation of sedimentary rocks, as well as volcanic and plutonic rocks. There is a shortage of actual rock specimens in many schools and recent reports have indicated that learning environment does not allow for sufficient time to carefully observe rocks. In fact, most of the existing rock specimens in schools are commercially purchased and stored in small wooden boxes, which may not strongly motivate students to learn. In this study, two types of corrugated cardboard rock specimen boxes with process printing cardboard were created. These designs were intended to spark curiosity and interest among students. The boxes were filled with eight kinds of representative sedimentary or igneous rocks, most of which were collected at riverbeds or shores in Japan. Forty sets of these rock specimen boxes were provided to several education boards in Gifu Prefectures and used in science classes. Questionnaire surveys conducted for each class revealed that providing one set of these attractive, well-designed package per student significantly increased students’ motivation for learning. This effect was observed not only among those who like science learning but also among those who answered that they were not good in science.
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  • Shogo HORIGUCHI, Kazuki TSUDA, Akira HOSOYAMA, Daisuke WATANABE
    2024Volume 33Issue 2 Pages 131-139
    Published: April 01, 2024
    Released on J-STAGE: June 12, 2025
    JOURNAL FREE ACCESS
    In the transport environment survey, measurements are taken using a transport environment recorder by driving trucks that are actually used for transportation. However, due to the time and expense involved, this is not often carried out, and when conducting vibration tests, PSD listed in the standards is used in most cases. Therefore, in order to simplify measurements in transport environment surveys, we attempted to utilize acceleration big data obtained by digital tachographs. We estimated the transition of the normalized acceleration RMS (root mean square) during the transportation route using acceleration big data by digital tachographs with a coarse sampling rate, and evaluated it by comparing it with the results by the transport environment recorder. As a result, the transition of the normalized acceleration RMS using the digital tachograph could be well estimated. It was thought that it would be possible to suppress variations in driving speed and lanes.
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