start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=
article-no=
start-page=1
end-page=6
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230330
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Analysis of Online Lectures by Using Attendance Efficiency and Lecture Efficiency -An Attempt to Estimate the Optimal Online Lecture Duration-
kn-title=受講効率と講義効率から見たオンライン講義―最適なオンライン講義時間の推定の試み―
en-subtitle=
kn-subtitle=
en-abstract=When an online lecture is given in real time and archived video of the lecture is provided, students can take the lecture multiple times and at the same time can select only the necessary parts of the lecture. Attendance efficiency (Ae) is an index that quantifies the situation that “the re-view rate of the lecture video is 3, but the video playback time is not 3 times” (Yamakawa and Takahata, 2022). In this article, we newly defined an index of Lecture efficiency (Le), that is, t he legal lec ture time di vided by the lecture vi deo time, i.e . Ae: lecture video time * re-viewing rate / viewi ng time per person, Le: legal le cture time / lecture vid eo time. Using this Ae and Le, about 100 online lectures conducted by the authors over the three years from 2020 to 2022 were modeled with a linear model and a nonlinear model. A regression equation of Ae=4.020-1.113*Le and Ae=4.564*exp(-0.4431*Le) were obtained. Examining these models, it was estimated that the optimal length of online lecture videos is 1/2 to 2/3 of the legal lecture time. Also, Ae at this time converged in the range of 2.0 < Ae < 2.5. Considering these together with the average number of views of the lecture videos, it was found that the students of the online lectures are considered to watch the online lecture videos with a sufficiency rate of about 0. 96 by viewin g multiple t imes.
kn-abstract=　リアルタイム形式でオンライン講義を行い，その講義動画をアーカイブ提供する場合，受講生は複数回の受講が可能になるのと同時に必要な部分だけを選択して受講することが可能になる。この状況を数値化したものが受講効率Ae である(山川・高旗, 2022)。今回，新たに講義効率(Lecture efficiency, Le)を定義し，データサイエンスの手法に基づき，筆者が2020 年度から2022 年度の3 年間に実施した約100 回のオンライン講義のAe をLeを使った線形モデルおよび非線形モデルでモデリングして検討したところ，最適なオンライン講義動画の長さは法定講義時間に対して1/2 から2/3 であることが推定された。またこの際のAe は2.0 < Ae < 2.5 の範囲に収束した。これらを講義動画の平均視聴回数と併せて考察するとオンライン講義の受講者は複数回の視聴により約96 %の充足率でオンライン講義動画を視聴していると考えられることがわかった。
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学学術研究院自然科学学域
en-keyword=オンライン講義（Online lecture）
kn-keyword=オンライン講義（Online lecture）
en-keyword=受講効率（Attendance efficiency）
kn-keyword=受講効率（Attendance efficiency）
en-keyword=講義効率（Lecture efficiency）
kn-keyword=講義効率（Lecture efficiency）
END

start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=
article-no=
start-page=33
end-page=46
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20220330
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=An Investigation on “Ae” of Real-time Online Lecture at the Okayama university - Using the YouTube Live + OBS Studio and Google Classroom Web Applications
kn-title=リアルタイムオンライン講義の受講効率の検証と課題 ―YouTube Live + OBS Studio とGoogle Classroom の活用―
en-subtitle=
kn-subtitle=
en-abstract=Real-time online lecture were held at the Okayama University. The online system that used were constructed newly by the authors using the YouTube Live and Google classroom Web applications. This system could also provide a lecture video archive. The construction cost and operating cost of the system could be quite low. In addition to delivering lecture videos, the LMS was using for streamline communication with students. Lectures were never stopped due to a failure in the video delivery system or the LMS. The system freed the lecturer from the restrictions of lecture room facilities and lecture timetables, made it easier to use multimedia teaching materials and virtual teaching materials. It was also thought that the student's attendance efficiency was improved to about 2.9 times that of legacy lecture style. Verification of the qualitative problems of the lesson structure and contents, the deepening of students' understanding of the lesson contents, and the breakdown of the qualifications and abilities acquired by t he students are future t asks.
kn-abstract=岡山大学でリアルタイムオンライン講義を実施した。使用したオンラインシステムはYouTubeLiveとGoogleClassroomのWebアプリケーションを使用して作成者が新たに構築した。このシステムは，講義ビデオアーカイブを提供することも可能であった。システムの構築費と運用費はかなり低くなる可能性がある。LMSは，講義ビデオの配信に加えて，学生とのコミュニケーションを合理化するために用いた。ビデオ配信システムまたはLMSの障害が原因でオンライン講義が停止することはなかった。このシステムにより講師は講義室の設備や講義の時間割の制約から解放され，マルチメディア教材やバーチャル教材の使用が容易になった。また学生の受講効率は従来の講義形式に対して約2.9倍に向上したと考えられる。授業の構成や内容の質的問題の検証，授業内容に対する生徒の理解の深化，生徒が習得した資質や能力の内容の検証は今後の課題である。
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=TakahataHiroshi
en-aut-sei=Takahata
en-aut-mei=Hiroshi
kn-aut-name=髙旗浩志
kn-aut-sei=髙旗
kn-aut-mei=浩志
aut-affil-num=2
ORCID=

affil-num=1
en-affil=Academic Field of Natural Science a nd Technology, Okayama University
kn-affil=岡山大学大学院自然科学研究科

affil-num=2
en-affil=Center for Teacher Education and Development, Okayama University
kn-affil=岡山大学教師教育開発センター
en-keyword=オンライン講義(Online Lecture)
kn-keyword=オンライン講義(Online Lecture)
en-keyword=OBS Studio
kn-keyword=OBS Studio
en-keyword=YouTube Live
kn-keyword=YouTube Live
en-keyword=Google Classroom
kn-keyword=Google Classroom
en-keyword=受講効率(Attendance efficiency)
kn-keyword=受講効率(Attendance efficiency)
END

start-ver=1.4
cd-journal=joma
no-vol=9
cd-vols=
no-issue=
article-no=
start-page=1
end-page=12
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2019
dt-pub=20190320
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Google classroom and Chromebook as an Educational IT system
kn-title=教育ITシステムとしてのGoogle classroomとChromebook
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=　「2030年代を生きる力」と「働き方改革に利するITスキル」を教育するためのアクティブ・ラーニングをサポートする教育ITシステムの構築においてGoogle classroomとChromebookを検討した。教育クラウドプラットフォームのひとつであるClassroomと，Webアプリケーションを利用するChromebookを用いて教育ITシステムを構築すると低コストで導入と運用ができると考えられた。またこの教育ITシステムはGoogleアカウントを経由して作業環境やデータ・ファイルをスマートフォンとPCの間で同期するため，スマホ・ネイティブ世代の情報処理能力をスムースに拡張することができる。これにより国際化が要請されているスマホ・ネイティブ世代が経験するデジタル・デバイドを軽減し，また2030年代に向けて我が国のビジネス・ワーカーが持つITスキルを向上させることが期待される。
en-copyright=
kn-copyright=

en-aut-name=Yamakawa􀀫un􀁋i
en-aut-sei=Yamakawa
en-aut-mei=􀀫un􀁋i
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学大学院自然科学研究科
en-keyword=アクティブ・ラーニング
kn-keyword=アクティブ・ラーニング
en-keyword=教育ITシステム
kn-keyword=教育ITシステム
en-keyword=Google classroom
kn-keyword=Google classroom
en-keyword=Chromebook
kn-keyword=Chromebook
en-keyword=スマホ・ ネイティブ世代
kn-keyword=スマホ・ ネイティブ世代
END

start-ver=1.4
cd-journal=joma
no-vol=21
cd-vols=
no-issue=1
article-no=
start-page=1
end-page=5
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2014
dt-pub=20141227
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=A high precision and high resolution estimation of the spatial distribution of PM2.5 in the south area of Okayama prefecture, Japan
kn-title=岡山県南部におけるPM2.5の高精度高解像度空間分布推定
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=　A relatively high precision and high resolution spatial distribution of the PM2.5 in the south part of the Okayama prefecture, Japan was estimated by the Universal Kriging method and the FOSS4G GIS softwares.
The observation data of the PM2.5 were obtained from the Environmental data service site of the Okayama prefecture. The geospatial open data about the research field that used in the research were served by the government research institutes. The spatial analysis were executed by the R (R core team, 2014) and its spatial libraries, maptools (Bivand and Lewin-Koh, 2014), rgdal (Bivand, Keitt and Rowlingson, 2014) and gstat (Pebesma, 2014). The geospatial representation and qualitative analysis of the estimated distribution were
performed by the QGIS (QGIS Development Team, 2014) and the Google earth (Google, 2014). The time
variant of the PM2.5 concentration by the each observatories in the area were show some cross correlation
factor to the SPM10 concentration data. The estimated PM2.5 distribution seems to show that the relatively
tight relation to the geospatial factors in the research area. The estimation of a time variant change of the
PM2.5 distribution will be required of the further research..
en-copyright=
kn-copyright=

en-aut-name=OmoriAkiho
en-aut-sei=Omori
en-aut-mei=Akiho
kn-aut-name=大森秋穂
kn-aut-sei=大森
kn-aut-mei=秋穂
aut-affil-num=1
ORCID=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部地球科学科
en-keyword=PM2.5
kn-keyword=PM2.5
en-keyword=Spatial statistics
kn-keyword=Spatial statistics
en-keyword=Kriging
kn-keyword=Kriging
en-keyword=R-language
kn-keyword=R-language
en-keyword=gstat
kn-keyword=gstat
en-keyword=FOSS4G
kn-keyword=FOSS4G
en-keyword=Google earth
kn-keyword=Google earth
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=12
article-no=
start-page=34
end-page=34
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20111201
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑⑫　トルコ石
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=11
article-no=
start-page=51
end-page=51
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20111101
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑⑪　トパーズ
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=10
article-no=
start-page=43
end-page=43
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20111001
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑⑩　トルマリン
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=9
article-no=
start-page=43
end-page=43
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110901
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑⑨　サファイア
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
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kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=8
article-no=
start-page=47
end-page=47
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110801
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑⑧　ペリドット
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
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kn-aut-name=山川純次
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kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=7
article-no=
start-page=51
end-page=51
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110701
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑⑦　ルビー
en-subtitle=
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en-abstract=
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en-copyright=
kn-copyright=

en-aut-name=
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kn-aut-name=山川純次
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kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
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no-issue=6
article-no=
start-page=51
end-page=51
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110601
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑⑥　ムーンストーン
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
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kn-aut-name=山川純次
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kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=5
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start-page=51
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dt-accepted=
dt-pub-year=2011
dt-pub=20110501
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑⑤　ヒスイ
en-subtitle=
kn-subtitle=
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kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
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kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=4
article-no=
start-page=43
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dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110401
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑④　ダイヤモンド
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kn-subtitle=
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kn-abstract=
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kn-copyright=

en-aut-name=
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kn-aut-name=山川純次
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kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

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cd-journal=joma
no-vol=66
cd-vols=
no-issue=3
article-no=
start-page=47
end-page=47
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110301
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑③　アクアマリン
en-subtitle=
kn-subtitle=
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kn-abstract=
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en-aut-name=
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kn-aut-name=山川純次
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kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=2
article-no=
start-page=35
end-page=35
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110201
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑②　アメジスト
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
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kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=1
article-no=
start-page=46
end-page=46
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110101
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ある鉱物学者の誕生石図鑑①　ザクロ石
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=67
cd-vols=
no-issue=3
article-no=
start-page=24
end-page=28
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2012
dt-pub=20120301
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=宝石にまつわる化学的加工技術　―偽物に騙されないための知識と心得
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球学科
END

start-ver=1.4
cd-journal=joma
no-vol=3
cd-vols=
no-issue=
article-no=
start-page=27
end-page=31
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2013
dt-pub=20130308
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The Web-based Interactive three-dimensional Crystal Structure Materials for Scientific Education
kn-title=理科教育におけるWebベースの対話型3次元結晶構造教材
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=　理科教育におけるWeb ベースの対話型3 次元結晶構造教材としてX3D 形式あるいは3D PDF を使ったシステムを比較検討した。どちらの形式もe- ラーニングシステムと高い親和性を持ち，また初学者と専門家の空間概念の把握に関するギャップを埋める教材として優れていると考えられた。データの継続使用を考えた場合，オープン規格であるX3D 形式と対応Web ブラウザを用いるシステムが適していた。一方，高品位な印刷が必要な場合は3D PDF とAdobe Reader を組み合わせたシステムが適していると考えられたが，将来に渡る継続利用を考慮した場合，このシステムはプロプライエタリである点に留意して運用しなくてはならないだろう。
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学大学院自然科学研究科
en-keyword=3D PDF
kn-keyword=3D PDF
en-keyword=X3D
kn-keyword=X3D
en-keyword=結晶構造
kn-keyword=結晶構造
en-keyword=理科教材
kn-keyword=理科教材
END

start-ver=1.4
cd-journal=joma
no-vol=19
cd-vols=
no-issue=1
article-no=
start-page=19
end-page=24
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2012
dt-pub=20121226
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Estimation of SPM concentration distribution over the central Seto Inland Sea
kn-title=瀬戸内海中部上空におけるSPM濃度分布の推定
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Ordinary Kriging, OK, and Regression Kriging, RK, are the spatial statistical methods that are possible to
estimate a horizontal distribution in a study area from discrete data. OK is the method which takes account of
only spatial auto-correlation structure of the data, while RK is the method which takes account of an interrelationship
between spatial auto-correlation structure and some auxiliary variables to minimize the estimation error.
Analytical processing for OK and RK methods was performed by the R-Language (R Core Team, 2012)
and its some additional libraries. The auxiliary variables required to perform RK method were prepared by a
GIS application, Quantum GIS (Quantum GIS Development Team, 2012). The 3-dimensional geographic representation
of the estimation maps was performed by the Google Earth (Google, 2012).
In this report, OK and RK methods were applied to one of the Earth scientific information, SPM (Supended
Particulate Matter). Then, these methods were considered by comparing two estimation maps, and finally
considered qualitatively by displaying these maps in the Google Earth.
en-copyright=
kn-copyright=

en-aut-name=EbiTakahiro
en-aut-sei=Ebi
en-aut-mei=Takahiro
kn-aut-name=海老貴宏
kn-aut-sei=海老
kn-aut-mei=貴宏
aut-affil-num=1
ORCID=

en-aut-name=MatsumotoHirofumi
en-aut-sei=Matsumoto
en-aut-mei=Hirofumi
kn-aut-name=松本宏文
kn-aut-sei=松本
kn-aut-mei=宏文
aut-affil-num=2
ORCID=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学大学院自然科学研究科地球科学専攻

affil-num=2
en-affil=
kn-affil=岡山大学大学院自然科学研究科地球科学専攻

affil-num=3
en-affil=
kn-affil=岡山大学大学院自然科学研究科地球科学専攻
en-keyword=Ordinary Kriging
kn-keyword=Ordinary Kriging
en-keyword=Regression Kriging
kn-keyword=Regression Kriging
en-keyword=Auxiliary variable
kn-keyword=Auxiliary variable
en-keyword=R-Language
kn-keyword=R-Language
en-keyword=Google Earth
kn-keyword=Google Earth
END

start-ver=1.4
cd-journal=joma
no-vol=19
cd-vols=
no-issue=1
article-no=
start-page=13
end-page=17
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2012
dt-pub=20121226
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The temperature and pressure conditions of synthetic Sibirskite and Parasibirskite
kn-title=シベリア石とパラシベリア石の安定温度圧力条件
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Sibirskite (CaHBO ) and parasibirskite ₃ are in the relation of polymorphism, these are regarded as the alteration
products of takedaite (Ca₃B₂O₆), occurs at Fuka mine, Okayama Prefecture. The synthesis of parasibirskite was
reported by the Schäfer (1968a, b) etc. and the synthesis of sibirskite was reported by the Sun et al. (2011).
To determine the formation condition of sibirskite and parasibirskite in the natural, they were synthesized from
the natural takedaite (Ca₃B₂O₆). As a result, both of sibirskite and parasibirskite were formed by the duration
time of 7 days with 1000 kg/cm2 and 300 oC, on the other hand, only sibirskite was formed by the duration time of
14 days with the same condition.
In addition, the mixtures of sibirskite and parasibirskite were examined under the various temperatures and
pressures of hydrothermal conditions. As a result, the upper limit of the stable temperature and pressure
conditions of sibirskite was estimated between 350 oC and 400 oC at 1500 kg/cm2, and between 400 oC and 450 oC
at 500 kg/cm2 . In the higher temperature than the condition, sibirskite were changed into shimazakiite (Ca₂B₂O₅).
en-copyright=
kn-copyright=

en-aut-name=KanoMasahiro
en-aut-sei=Kano
en-aut-mei=Masahiro
kn-aut-name=狩野正裕
kn-aut-sei=狩野
kn-aut-mei=正裕
aut-affil-num=1
ORCID=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学大学院自然科学研究科

affil-num=2
en-affil=
kn-affil=岡山大学大学院自然科学研究科
en-keyword=Sibirskite
kn-keyword=Sibirskite
en-keyword=Parasibirskite
kn-keyword=Parasibirskite
en-keyword=Shimazakiite
kn-keyword=Shimazakiite
en-keyword=Fuka
kn-keyword=Fuka
en-keyword=Hydrothermal synthesis
kn-keyword=Hydrothermal synthesis
END

start-ver=1.4
cd-journal=joma
no-vol=2
cd-vols=
no-issue=
article-no=
start-page=120
end-page=125
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2012
dt-pub=20120319
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Design and Implementation of e-Learning System at the Faculty of Science, Okayama University
kn-title=岡山大学理学部におけるe-ラーニングシステムの導入と運用
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=岡山大学理学部ではe-ラーニングシステム(理学部LMS)が導入され運用されている。理学部LMSの導入に際しては商用またはオープンソフトウェアの様々な学習管理システムを調査し，Moodleが採用された。理学部でのMoodleはセキュアで信頼性の高いPCベースのGNU/Linux，Apache，MySQLおよびPHPが稼動するコンピュータによって運用されている。理学部LMSを使用するための初期コストは，学部を構成している教員と学生の持つ利用能力に応じて可能な限りコストパフォーマンスを高める様にデザインされた。LMSとして採用したMoodleがベースとしている社会構築主義は講義を改善する強力なポテンシャルを有するが，理学部LMSシステムの有効性はユーザの能力によって制限されるかもしれない。
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=ShibataTsugio
en-aut-sei=Shibata
en-aut-mei=Tsugio
kn-aut-name=柴田次夫
kn-aut-sei=柴田
kn-aut-mei=次夫
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学大学院自然科学研究科

affil-num=2
en-affil=
kn-affil=岡山大学大学院自然科学研究科
en-keyword=e- ラーニング
kn-keyword=e- ラーニング
en-keyword=LMS
kn-keyword=LMS
en-keyword=Moodle
kn-keyword=Moodle
en-keyword=社会構築主義
kn-keyword=社会構築主義
END

start-ver=1.4
cd-journal=joma
no-vol=18
cd-vols=
no-issue=1
article-no=
start-page=1
end-page=3
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20111226
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=KED estimated distribution of Earth Scientific Information
kn-title=KED法を用いた地球科学情報の分布推定
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=KED, the Kriging with External Drift, is one of the spatial statistical method for estimating some distribution from the discrete spatial sampled data set about the research field. The KED uses the kriging method (Matheron, 1973) with some auxiliary map to minimize the estimated error. The KED procedure was performed by the R-Language (Ihaka and Gentleman, 1996) using some geostatistical libraries. The auxiliary maps required by the KED were prepared by the authors with some GIS applications. The 3-dimensional geographic representations for the estimated distribution were performed by the Google Earth (Google, 2011). In this report, the KED was applied to some Earth scientific information to show the fundamental scheme of the method.
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=EbiTakahiro
en-aut-sei=Ebi
en-aut-mei=Takahiro
kn-aut-name=海老貴宏
kn-aut-sei=海老
kn-aut-mei=貴宏
aut-affil-num=2
ORCID=

en-aut-name=MatsumotoHirofumi
en-aut-sei=Matsumoto
en-aut-mei=Hirofumi
kn-aut-name=松本宏文
kn-aut-sei=松本
kn-aut-mei=宏文
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=3
en-affil=
kn-affil=岡山大学理学部地球科学科
en-keyword=KED
kn-keyword=KED
en-keyword=Universal kriging
kn-keyword=Universal kriging
en-keyword=Regression kriging
kn-keyword=Regression kriging
en-keyword=R-Language
kn-keyword=R-Language
en-keyword=Google Earth
kn-keyword=Google Earth
END

start-ver=1.4
cd-journal=joma
no-vol=17
cd-vols=
no-issue=1
article-no=
start-page=25
end-page=26
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2010
dt-pub=20101224
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Representation of Earth scientific information by the Google(TM) Earth
kn-title=Google(TM) Earthによる地球科学情報の表示
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The Google(TM) Earth is a GIS application provided by the Google, with versatile and high performance visualization and manipulation capability for geographic information. The Google Earth is also a multi-platform application, so the installation and running cost for research and education site is relatively low. The Earth
scientific information also have a geographic information scheme, so the Google Earth has some potential to support the education and research field of the Earth science. In this report, some Earth scientific information were converted by the R-Language and its libraries for represent by the Google Earth. The 3-dimensional representation of the information will be able to support to understanding the specification of the data for the Earth scientific research and education field.
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=EbiTakahiro
en-aut-sei=Ebi
en-aut-mei=Takahiro
kn-aut-name=海老貴宏
kn-aut-sei=海老
kn-aut-mei=貴宏
aut-affil-num=2
ORCID=

en-aut-name=MatsumotoHirofumi
en-aut-sei=Matsumoto
en-aut-mei=Hirofumi
kn-aut-name=松本宏文
kn-aut-sei=松本
kn-aut-mei=宏文
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=3
en-affil=
kn-affil=岡山大学理学部地球科学科
en-keyword=Earth scientific information
kn-keyword=Earth scientific information
en-keyword=GIS
kn-keyword=GIS
en-keyword=Google Earth
kn-keyword=Google Earth
en-keyword=Kriging
kn-keyword=Kriging
en-keyword=R-Language
kn-keyword=R-Language
END

start-ver=1.4
cd-journal=joma
no-vol=17
cd-vols=
no-issue=1
article-no=
start-page=21
end-page=23
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2010
dt-pub=20101224
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=DGEM: Digital Geological Elevation Model
kn-title=DGEM: 数値地質標高モデル
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=DGEM, a Digital Geological Elevation Model, was developed using the digital geological map and the JPGIS DEM data with some GIS application and the R-Language. In the model, the information of the geological map was combined with the DEM by their coordinates. The integration of those two digital map was performed by the R-Language, so the model can be used by some useful presentation library of the language, such as the RGL, or
by some geographical calculation libraries. Moreover, the DGEM will be used by the spatial statistical libraries of the R-Language to investigate some geological spatial distributed specifications.
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=EbiTakahiro
en-aut-sei=Ebi
en-aut-mei=Takahiro
kn-aut-name=海老貴宏
kn-aut-sei=海老
kn-aut-mei=貴宏
aut-affil-num=2
ORCID=

en-aut-name=MatsumotoHirofumi
en-aut-sei=Matsumoto
en-aut-mei=Hirofumi
kn-aut-name=松本宏文
kn-aut-sei=松本
kn-aut-mei=宏文
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=3
en-affil=
kn-affil=岡山大学理学部地球科学科
en-keyword=Digital geological map
kn-keyword=Digital geological map
en-keyword=DEM
kn-keyword=DEM
en-keyword=JPGIS
kn-keyword=JPGIS
en-keyword=QuantumGIS
kn-keyword=QuantumGIS
en-keyword=R-Language
kn-keyword=R-Language
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2000
dt-pub=20000920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Native gold from Mikawa mine, Niigata Prefecture, Japan
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>Native gold was found at Mikawa mine, Niigata Prefecture, Japan. The mineral was associated with quartz in a druse within quartz-vein in propyrite. The crystals were formed in filiform, reticulated and dendritic shapes with about 1 mm length with 0.1 mm width and 0.05 mm thickness. Very malleable and ductile, opaque and yellow with metallic luster. Qualitative and semi-quantitative analyses were performed by the wavelength dispersive EPMA. Quantitatively, the crystals contained Au, Ag and Hg. Semi-quantitative analyses were executed with ZAF correction algorithm. The results showed that these specimens had a average chemical composition Au<sub>0.77</sub>Ag<sub>0.11</sub>Hg<sub>0.12</sub>. This specimen was archived at our site with a collection number ESO-M01001.</p>

en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=TanabeMitsuo
en-aut-sei=Tanabe
en-aut-mei=Mitsuo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=ShimadaKazumasa
en-aut-sei=Shimada
en-aut-mei=Kazumasa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=HenmiChiyoko
en-aut-sei=Henmi
en-aut-mei=Chiyoko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Okayama University

affil-num=2
en-affil=
kn-affil=Okayama Mineral and Fossil club

affil-num=3
en-affil=
kn-affil=Okayama Mineral and Fossil club

affil-num=4
en-affil=
kn-affil=Okayama University
en-keyword=Native gold
kn-keyword=Native gold
en-keyword=Mikawa mine
kn-keyword=Mikawa mine
en-keyword=Electrum
kn-keyword=Electrum
en-keyword=ESO-M01001
kn-keyword=ESO-M01001
END

start-ver=1.4
cd-journal=joma
no-vol=1
cd-vols=
no-issue=1
article-no=
start-page=49
end-page=52
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1994
dt-pub=19940920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=LISTHKL : List h, k, l, Fo and σFo tables
kn-title=単結晶強度データーリスト作成プログラムLISTHKL
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=LISTHKL, a Fortran 77 program listing up the data for deposit is submission to Acta Crystallo-graphica has been written. The program requires a computer set with a printer utilizung the LIPS3 page description language.
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=KawaharaAkira
en-aut-sei=Kawahara
en-aut-mei=Akira
kn-aut-name=河原昭
kn-aut-sei=河原
kn-aut-mei=昭
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部地学科
en-keyword=LISTHKL
kn-keyword=LISTHKL
en-keyword=Acta Crystallographica
kn-keyword=Acta Crystallographica
en-keyword=reflection data
kn-keyword=reflection data
END

start-ver=1.4
cd-journal=joma
no-vol=1
cd-vols=
no-issue=1
article-no=
start-page=37
end-page=48
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1994
dt-pub=19940920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=CALCOMP to LIPS3 convert library
kn-title=CALCOMPからLIPS3への変換ライブラリの作成
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=CALLIP, a CALCOMP compatible Fortran 77 library using the Canon LIPS3 page description lan-guage, has been written. As a result, the graphic output of programs with CALCOMP plotting routines used for crystal structure analyses, such as ORTEP2, Rietveld analyses and others can be used under the printer equipped with LIPS3 PDL. The details of the library was given with some graphic examples.
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地学科
en-keyword=CALLIP
kn-keyword=CALLIP
en-keyword=CALCOMP
kn-keyword=CALCOMP
en-keyword=LIPS3
kn-keyword=LIPS3
en-keyword=Fortran 77
kn-keyword=Fortran 77
END

start-ver=1.4
cd-journal=joma
no-vol=2
cd-vols=
no-issue=1
article-no=
start-page=103
end-page=108
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1995
dt-pub=19950920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=System for monitoring the vacuum of X-ray generators (Available use of 8 bit personal computer) 　
kn-title=X線発生装置真空度監視システムの試作 （8ビットパソコンの有効利用)
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=An used 8 bit personal computer is utilized for an instrument for continuous monitoring of the vacuum valuses of X-ray genrators. The interface board, programmable peripheral interfacial LSI, 8255A and some IC's for address decoding are assembled into a completed unti. The concept of the construction of this interface unti is profitable for the inexpensive layout of experimental laboratories.
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=KawaharaAkira
en-aut-sei=Kawahara
en-aut-mei=Akira
kn-aut-name=河原昭
kn-aut-sei=河原
kn-aut-mei=昭
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部地球科学科
en-keyword=X-ray generator
kn-keyword=X-ray generator
en-keyword=vacuum
kn-keyword=vacuum
en-keyword=monitoring
kn-keyword=monitoring
en-keyword=personal computer
kn-keyword=personal computer
END

start-ver=1.4
cd-journal=joma
no-vol=3
cd-vols=
no-issue=1
article-no=
start-page=65
end-page=70
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1996
dt-pub=19960920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=A microcomputer-controlled gradual cooling system for hydrothermal reactors
kn-title=マイコンを使用した水熱合成炉徐冷制御装置の作成
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A used 8 bit microcomputer is applied for an instrument of controlling the heating temperatures of hydrothermal reactor furnaces. The temperatures were changed into appropriate values of voltage by thermocouples and additional devices. The interface board, programmable peripheral interface LSI and some IC's for addres decording are assembled into a complte unti. The device is useful for the inexpensive way of the construction of the accurate temperature control system.
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=KawaharaAkira
en-aut-sei=Kawahara
en-aut-mei=Akira
kn-aut-name=河原昭
kn-aut-sei=河原
kn-aut-mei=昭
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部地球科学科
en-keyword=hydrothermal synthesis
kn-keyword=hydrothermal synthesis
en-keyword=cooling system
kn-keyword=cooling system
en-keyword=personal computer
kn-keyword=personal computer
END

start-ver=1.4
cd-journal=joma
no-vol=7
cd-vols=
no-issue=1
article-no=
start-page=19
end-page=20
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2000
dt-pub=20000920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Native gold from Mikawa mine, Niigata Prefecture, Japan
kn-title=新潟県東蒲原郡三川村三川鉱山産の自然金
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Native gold was found at Mikawa mine, Niigata Prefecture, Japan. The mineral was associated with quartz in a druse within quartz-vein in propyrite. The crystals were formed in filiform, reticulated and dendritic shapes with about 1 mm length with 0.1 mm width and 0.05 mm thickness. Very malleable and ductile, opaque and yellow with metallic luster. Qualitative and semi-quantiative analyses were performed by the wavelength dispersive EPMA. Quantitatively, the crystals contained Au, Ag and Hg. Semi-quantitative analyses were executed with ZAF correction algorithm. The results showed that these specimens had a average chemical composition Au0.77 Ag0.11Hg0.12. This specimen was archived at our site with a collection number ESO-M01001.
en-copyright=
kn-copyright=

en-aut-name=YamakawaJunji
en-aut-sei=Yamakawa
en-aut-mei=Junji
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

en-aut-name=TanabeMitsuo
en-aut-sei=Tanabe
en-aut-mei=Mitsuo
kn-aut-name=田邊満雄
kn-aut-sei=田邊
kn-aut-mei=満雄
aut-affil-num=2
ORCID=

en-aut-name=ShimadaKazumasa
en-aut-sei=Shimada
en-aut-mei=Kazumasa
kn-aut-name=島田和昌
kn-aut-sei=島田
kn-aut-mei=和昌
aut-affil-num=3
ORCID=

en-aut-name=HenmiChiyoko
en-aut-sei=Henmi
en-aut-mei=Chiyoko
kn-aut-name=逸見千代子
kn-aut-sei=逸見
kn-aut-mei=千代子
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Earth Science, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Okayama Mineral and Fossi club

affil-num=3
en-affil=
kn-affil=Okayama Mineral and Fossi club

affil-num=4
en-affil=
kn-affil=Department of Earth Science, Faculty of Science, Okayama University
en-keyword=Native Gold
kn-keyword=Native Gold
en-keyword=Mikawa Mine
kn-keyword=Mikawa Mine
en-keyword=electrum
kn-keyword=electrum
en-keyword=ESO-M01001
kn-keyword=ESO-M01001
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1994
dt-pub=19940325
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=燐酸塩鉱物の結晶構造の生成条件への依存性―それに関連した構造の系統化の研究―
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=山川純次
kn-aut-sei=山川
kn-aut-mei=純次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学
END