岩手大学農学部植物生命科学科では学部3年生を対象とした作物学実験で，「イネ科作物の環境応答」という回を設け，イネとコムギを異なる土壌水分条件でポット栽培し，生理形態的な違いを調査する実験を行っている．根長測定を行うことで，土壌水分の違いが地上部だけではなく根の発達にも影響を及ぼすこと，さらにその影響は同じイネ科作物でもイネとコムギでは異なることを実感することができる内容としている．岩手大学の作物学実験について，準備物や実験のねらい，調査・実験の流れ，学生の反応などをできるだけ詳しく紹介し，根を対象とした教育例として参考にしていただきたい．

抄録全体を表示

The Olympic theme songs (TOTS) play an essential role in providing dramatic effects for TV programs, as well as a legacy transmission to hand on to the new generation the excitement that sweeps through the nation during the worlds’greatest sports event. We investigated the origin of the Japanese Olympic theme music. In our study, three official theme musical compositions and the Olympic theme music employed by the Olympic broadcasters during the three Olympics held in Japan (Tokyo, Sapporo, Nagano) were included. We reviewed papers regarding the theme music for the Olympics and interviewed the composers of the official Olympic theme songs and the program producers of Olympic broadcasting channels. We found several common points between each TOTS. Firstly, all of the official theme songs were released more than a half a year before the Olympics opening ceremony. Furthermore, these songs were broadcast on the music programs of the Japanese national broadcasting station (NHK) of the games, such as “Minna no Uta (English title : Songs for Everyone)” and “NHK Kōhaku Uta Gassen (English title : NHK Red and White Song Battle)”. Additionally, during these times the composition competitions of the theme compositions were held, and multiple artists participated in this competition and covered the theme compositions. On the other hand, TOTS of the news broadcasting was first introduced in 1988. In a quarter of the cases, the implementation of TOTS was linked to the employment of news casters, as they employed publicly well-known and experienced celebrities as both casters and performers of TOTS. It has been speculated that, since the private news broadcasters have fewer slots available to cover Olympic games compared to NHK, this was a measure taken to enhance the opportunity for TV appearances by engaging theme songs with Olympic coverage.

抄録全体を表示

Various methods for music retrieval have been proposed. Recently, many researchers are tackling developing methods based on the relationship between music and feelings. In our previous psychological study, we found that there was a significant correlation between colors evoked from songs and colors evoked only from lyrics, and showed that the music retrieval system using lyrics could be developed. In this paper, we focus on the relationship among music, lyrics and colors, and propose a music retrieval method using colors as queries and analyzing lyrics. This method estimates colors evoked from songs by analyzing lyrics of the songs. On the first step of our method, words associated with colors are extracted from lyrics. We assumed two types of methods to extract words associated with colors. In the one of two methods, the words are extracted based on the result of a psychological experiment. In the other method, in addition to the words extracted based on the result of the psychological experiment, the words from corpora for the Latent Semantic Analysis are extracted. On the second step, colors evoked from the extracted words are compounded, and the compounded colors are regarded as those evoked from the song. On the last step, colors as queries are compared with colors estimated from lyrics, and the list of songs is presented based on similarities. We evaluated the two methods described above and found that the method based on the psychological experiment and corpora performed better than the method only based on the psychological experiment. As a result, we showed that the method using colors as queries and analyzing lyrics is effective for music retrieval.

抄録全体を表示