[in Japanese]

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In this study, we focus on the initial imperfections that occurs during the manufacturing process of steel pipes, examine how much the analysis accuracy can be improved when the initial imperfections are considered. In addition, using the model with improved accuracy, analysis with different design parameters will be conducted, and the relationship between the energy absorption capacity of thick-walled steel pipe columns in the post-peak region and the design parameters will be summarized.

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At the curved part of the river channel, centrifugal force causes flooding, which increases the possibility of causing a breach. In particular, it is necessary to understand the mechanism of open channel flow with curved parts accompanied by overflow in response to heavy rain disasters that occur frequently in recent years. Therefore, in this study, we experimentally analyzed the flow mechanism in the river channel for open channels with levee overflow in various curved river channel shapes. As a result, the flow velocity distribution and turbulence structure in the situation with overflow were clarified.

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In the Chicago World's Fair 1933, a full-scale Japanese pavilion with a historical Japanese architectural style was built. The architect, Iwakichi Miyamoto, has not graduated from university and is an exception in the history of those Japanese pavilion architects, which is interesting. But Miyamoto was involved in the design of Japanese pavilions before 1933. In this paper, we would like to clarify the qualities of Iwakichi Miyamoto as an architect by following his career and the background of his involvement in the design of the Japanese Pavilions.

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In the Chicago World's Fair 1933, a full-scale Japanese pavilion was built in the historical Japanese architectural style. The Japanese pavilion is in the style of the Kamakura period, which is rare. This study seeks to clarify the historical significance of the Japanese Pavilion in Chicago World's Fair 1933 by exploring the background and considering the form of the Japanese Pavilion.

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It is well known that the alluvial has its natural period in relation to its depth, and makes the earthquake motion large. On the other hand, the hill also has its natural period in relation to its height. In two-dimensional analysis, the model of hill is made easily. But it is hard to make the 3-dimsnional model of hill because the height of hill is too much smaller than its length. The difficulty has roots in the huge number of its elements. In this paper, the simple method to calculate the natural period of a hill is proposed. In this method, A hill is chopped into 2-dimensional areas and the stiffness between chopped 2-dimensional areas is proposed. As a result, the proposed method gives the approximately natural period against FEM 3D model.

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In this paper, the first appearances of phrasal verbs consisting of “polysyllabic verb of French origin + preposition” were manually extracted from the Oxford English Dictionary second edition. Furthermore, following the studies by Kamiya (2020), Kamiya and Nakagawa (2021), the paper discusses the properties of phrasal verbs consisting of “a verb and a preposition.” It is said that phrasal verbs consisting of “verb of French origin + preposition” started being mass-produced with the occurrence of modern English (i.e., from 1500). However, phrasal verb consisting of “three (four)-syllable verb of French origin + preposition” were mass-produced after 1850. Unlike one-syllable verbs of Germanic origin, polysyllabic verbs of French origin retain their original and formal meanings. When combined with prepositions, they are not used colloquially, unlike phrasal verbs consisting of “verb of Germanic origin + preposition.”

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[in Japanese]

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[in Japanese]

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The purpose of this study was to investigate a grade and body weight and height of rugby football players participated in national technical college sports competition. The grade and physique of 720 rugby players who participated in the 46th to 51st national technical college sports competition was extracted from the player’s profile list. We compared a grade and physique of players between semi-final advance team (High-ranking) and 1st round level team (Low-ranking). Moreover, we compared the parameters of forward players (FW) and backs players (BK) between High-ranking and Low-ranking. As a result, the High- ranking had a higher proportion of upper graders and were heavier than the Low-ranking. A similar result was obtained when comparing the results by position. The present results suggested that the player’s grade and weight have an impact on the competition results and/or rank.

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[in Japanese]

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[in Japanese]

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[in Japanese]

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We had to try Remote Teaching the cause of COVID-19. I tried to do Remote Teaching for Mechanical Engineering. I created many teaching aids. I tried to use the teaching aids for face-to-face class again. But these needs remaking. This commentary on key point to remake Remote Teaching aid for face-to-face class.

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