図書館学会年報
Online ISSN : 2432-6763
Print ISSN : 0040-9650
ISSN-L : 0040-9650
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36 巻, 3 号
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論文
  • 大学図書館蔵書の重複分布と Zipfの法則について
    石井 啓豊
    原稿種別: 論文
    1990 年 36 巻 3 号 p. 97-107
    発行日: 1990年
    公開日: 2021/11/10
    DOIhttps://doi.org/10.20651/ajsls.36.3_97
    ジャーナル フリー
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    To investigate the statistical characteristics of the distribution of duplicate books among Japanese university libraries and its relationship to Zipf's law, the union catalog database of Japanese and European language books, maintained at the National Center for Science Information System, was analysed. The investigation included four steps, ① sampling of books from database and tabulation of data, ② specification of models based on Zipf's law, ③ estimation of model parameters, ④ statistical goodness-of-fit test.
    Statistical analysis applied to both of the size-frequency distribution and the rank-size distribution，revealed that Zipf's law is quite applicable to the distribution of both of the books in Japanese and European languages. The models adopted are not the well-known general forms of Zipf's law, that is, size-frequency model g(x)=ax-b and rank-size model f(r)=αr-β or f(r)=α(r十γ)-β (Mandelbrot's law), but the more generally extended forms, that is, size-frequency model, g(x)=a(x+c)-b and rank-size model f(r)=α(r+γ)-β+δ.
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  • 音楽分野における情報要求と図書館の利用
    一音楽研究者と演奏家の比較を中心に一
    加藤 修子
    原稿種別: 論文
    1990 年 36 巻 3 号 p. 108-120
    発行日: 1990年
    公開日: 2021/11/10
    DOIhttps://doi.org/10.20651/ajsls.36.3_108
    ジャーナル フリー
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    The author conducted the survey using a questionnaire toward people related to music, and analyzed 120 music scholars and 78 music players (performers). Here the author reports information needs and library uses in music field through the comparison between scholars and players (including composers and conductors), and describes problems of library services in music libraries.
    Major findings are as follows:
    (1) There is a difference in information needs between scholars and players. That is, scholars need several kinds of documents (such as literatures, music scores, sound recordings and so on) for their researches. On the other hand, players mainly need music scores and sound recordings and need literatures supplementary for their performances.
    (2) There is a difference in library uses between scholars and players. That is, the dependence and interest of players are relatively low compared to those of scholars. But the difference results from the fact of whether or not they belong to colleges or universities.
    (3) Because the access to scores and sound recordings is restricted compared to the access to literatures in music libraries, players, who mainly need scores and sound recordings, do not depend on music libraries very much. And this limitation in access to scores and sound recordings is a problem in music libraries.
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