JAIST Repository
https://dspace.jaist.ac.jp/ Title 製造業と情報通信業における研究開発投資多角化の企 業規模別分析 Author(s) 宮澤, 俊憲 Citation 年次学術大会講演要旨集, 34: 610-615 Issue Date 2019-10-26Type Conference Paper
Text version publisher
URL http://hdl.handle.net/10119/16556
Rights
本著作物は研究・イノベーション学会の許可のもとに 掲載するものです。This material is posted here with permission of the Japan Society for Research Policy and Innovation Management.
㸰㹃㸮㸵
〇㐀ᴗሗ㏻ಙᴗ࠾ࡅࡿ◊✲㛤Ⓨᢞ㈨ከゅࡢᴗつᶍูศᯒ
ۑᐑ⃝ಇ᠇㸦ᮾிᡂᚨᏛ㸧 㸯㸬ࡣࡌࡵ ⫼ ᬒ ◊✲㛤Ⓨᢞ㈨ࡢከゅࡣᴗࡢᢏ⾡ᇶ┙ࢆᣑᙇࡋ㸪᪂ࡓ࡞ࣀ࣮࣋ࢩࣙࣥᴗᶵࢆࡶࡓࡽࡍࠋࡇ ࡢࡓࡵ᪥ᮏࡢ〇㐀ᴗ࠾࠸࡚ࡣ㸪ከࡃࡢᴗ✀࡛◊✲㛤Ⓨᢞ㈨ࡢከゅࡀ᥎㐍ࡉࢀ࡚ࡁࡓࠋ≉⮬♫ࡢ ຊ〇ရ࣭ࢧ࣮ࣅࢫศ㔝ࡀᡂ⇍ẁ㝵࠶ࡿᴗ࡛ࡣ㸪᪤Ꮡᢏ⾡ࢆ㍈␗ศ㔝㐍ฟࡋ㸪᪂ᕷሙࢆ㛤ᣅࡍࡿ ࡇࡀ㔜せ࡞⤒Ⴀᡓ␎࡞ࡿࠋࡑࡢ୍᪉㸪ᢏ⾡ࡢ㧗ᗘ㸪ୡ⏺ⓗ࡞ᴗ㛫➇தࡢ⃭ࡼࡾ㸪⤒Ⴀ㈨※ ࢆຠ⋡ⓗά⏝ࡍࡿࡓࡵᴗࡢ㑅ᢥ㞟୰ࢆ㐍ࡵࡿᴗࡀከ࠸ࠋࡲࡓ⮬♫㊊ࡍࡿᢏ⾡ࢆ࣮࢜ࣉࣥ ࣀ࣮࣋ࢩࣙࣥࡸM&A ࡼࡾእ㒊ࡽྲྀࡾ㎸ࡴࡶቑຍࡋ࡚࠸ࡿࠋࡉࡽ㏆ᖺࡢ IT ࡢᛴ㏿࡞㐍Ṍ ࡼࡿ♫యࡢ IT 㸪〇㐀ᴗࡢࢧ࣮ࣅࢫ⏘ᴗࡢᙳ㡪ࡼࡾ㸪◊✲㛤Ⓨᢞ㈨ࡢከゅࡶྛᴗ✀࠾ ࠸࡚ࡑࡢ㔜Ⅼศ㔝ࡀኚࢃࡾࡘࡘ࠶ࡿྍ⬟ᛶࡀ࠶ࡿࠋࡑࡢࡓࡵ㸪〇㐀ᴗࡔࡅ࡛࡞ࡃሗ㏻ಙᴗ࡞ࡢ࡞ ࢧ࣮ࣅࢫᴗࡶศᯒᑐ㇟ຍ࠼㸪ࡘᗈ⠊࡞ࢹ࣮ࢱ࣮࣋ࢫࢆ⏝ࡋࡓᐇド◊✲ࡼࡾ㸪᪥ᮏᴗࡢ┤㏆ࡢ ◊✲㛤Ⓨᢞ㈨ືྥࢆゎ᫂ࡍࡿࡇࡀồࡵࡽࢀ࡚࠸ࡿࠋᮏ✏࡛ࡣࡇࡢࡼ࠺࡞どⅬᇶ࡙ࡁ㸪ᴗ✀ูࡘ ᴗつᶍูከゅືྥࢆศᯒࡋࡓ⤖ᯝࢆሗ࿌ࡍࡿࠋ ᪤Ꮡ◊✲ ◊✲㛤Ⓨࡢከゅࢆ㔞ⓗ ᐃࡍࡿ᪉ἲࡣ㸪◊✲㛤Ⓨάືࢆධຊഃࡽᤊ࠼ࡿࣉ࣮ࣟࢳฟຊഃ ࡽᤊ࠼ࡿࣉ࣮ࣟࢳࡀ࠶ࡿࠋධຊഃࡢ௦⾲ⓗᣦᶆࡋ࡚ࡣ㸪◊✲㛤Ⓨᢞ㈨㢠㸪◊✲㛤Ⓨᙉᗘ㸪◊✲⪅ ᩘ㸪◊✲⪅ẚ⋡࡞ࡀ࠶ࡿࠋࡲࡓฟຊഃࡢ௦⾲ⓗᣦᶆࡣ㸪ฟ㢪≉チᩘ㸪Ⓩ㘓≉チᩘ㸪⿕ᘬ⏝≉チᩘ㸪 බ⾲ࡉࢀࡓᏛ⾡ㄽᩥᩘ࡞ࡀ࠶ࡿࠋୡ⏺ⓗぢࡿฟຊഃࡢ≉チᩘὀ┠ࡋࡓ◊✲ࡀ༙࡛࠶ࡿࡀ㸪≉ チࡉࢀ࡞࠸◊✲㛤Ⓨࡣ ᐃ್ᫎࡉࢀ࡞࠸ࠋࡑࡇ࡛ᮏ✏࡛ࡣධຊഃࡽศᯒࡍࡿࣉ࣮ࣟࢳࢆ᥇⏝ ࡍࡿࠋ࡞᪤Ꮡ◊✲ࢆ௨ୗ♧ࡍࠋ ࡲࡎඛ㥑ⓗ࡞◊✲ࡋ࡚Kodama[1]ࡣ㸪ᙜࡢ⛉Ꮫᢏ⾡ᗇ㸦⌧ ᩥ㒊⛉Ꮫ┬㸧ࡢࠗ⛉Ꮫᢏ⾡◊✲ㄪᰝ ሗ࿌࠘࠾ࡅࡿᴗ✀ู〇ရศ㔝ู◊✲㛤Ⓨᢞ㈨㢠ࡢ⤒ᖺࢹ࣮ࢱᑐࡋ㸪ከゅᣦᶆࡋ࡚࢚ࣥࢺࣟࣆ࣮ ᗘࢆ⏝ࡋ㸪᪥ᮏࡢ〇㐀ᴗࡢᢏ⾡ⓗከゅࢆᴗ✀ู ᐃࡋ࡚࠸ࡿࠋࡉࡽGemba and Kodama[2] ࡣ㸪ከゅࡢ ᐃᡭἲࢆᨵⰋࡍࡿࡶ㸪ከゅࡼࡾᴗࡀ┈ᛶࢆ㧗ࡵࡓࡋ࡚࢟ࣕࣀࣥࡸ ᪫ᡂࡢᢏ⾡㛤Ⓨᡓ␎ᴗᡓ␎ࢆ♧ࡋࡓࠋࡲࡓᒣཱྀ[3]ࡣ㸪᭷౯ドๆሗ࿌᭩᪥⤒ NEEDS ࡼࡾྲྀᚓ ࡋࡓ᪥ᮏᴗࡢࢭࢢ࣓ࣥࢺู◊✲㛤Ⓨ㈝ࡢࢹ࣮ࢱ࣮࣋ࢫࢆ⏝ࡋ◊✲㛤Ⓨࡢከゅᗘ┈ᛶࡢ㛵ಀ ࢆศᯒࡋࡓࠋ ୖ㏙ࡢ◊✲ࢆ㋃ࡲ࠼㸪ᐑ⃝[4]ࡣ⥙⨶ᛶࡢ㧗࠸ࢹ࣮ࢱ࣮࣋ࢫࡋ࡚ࠗ⛉Ꮫᢏ⾡◊✲ㄪᰝሗ࿌࠘ࢆ⏝ࡋ㸪 〇㐀ᴗ24 ᴗ✀ሗ㏻ಙᴗࢆྵࡴࢧ࣮ࣅࢫᴗ 2 ᴗ✀ࢆຍ࠼ࡓィ 26 ᴗ✀ࡘ࠸࡚㸪2008 ᖺ㹼2015 ᖺ ࠾ࡅࡿ◊✲㛤Ⓨᢞ㈨ࡢከゅ≧ἣ࠾ࡼࡧᴗ✀㛫ࡢᢏ⾡ⓗ㏆᥋ᛶࢆ ᐃࡋࡓࠋࡉࡽᐑ⃝[5]࡛ࡣほ ᮇ㛫 ࢆ2017 ᖺࡲ࡛ࡢ 10 ᖺ㛫ᣑᙇࡋ㸪ࡘከゅᗘ㸪◊✲㛤Ⓨᙉᗘ㸪◊✲⪅ẚ⋡㸪◊✲⪅ 1 ேᙜࡾ♫ෆ ⏝◊✲㈝ࡢ4 ᣦᶆࡘ࠸࡚┦㛵ศᯒࢆヨࡳࡓࠋࡑࡢ⤖ᯝࡼࢀࡤ㸪⮬ື㌴ࡸ་⸆ရࡢࡼ࠺ຊ〇ရศ 㔝ࡀᣑࡋ࡚࠸ࡿᴗ✀ࡣ㸪ከゅᗘࢆపୗࡉࡏᮏᴗࡑࡢ࿘㎶ศ㔝≉ࡍࡿ᪉ྥ࠶ࡗࡓࠋࡲࡓሗ ㏻ಙᴗࡣ㸪༳ๅᴗ㸪㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔჾලᢏ⾡ⓗ᥋㏆ࡋ࡚࠾ࡾ㸪ᚋᕷሙ࡛ࡢ➇ྜࡶ ᢏ⾡⼥ྜࡸᢏ⾡ᥦᦠࡀ⏕ࡌࡿྍ⬟ᛶࡀ♧၀ࡉࢀࡓࠋ ◊✲┠ⓗ ᮏ✏࡛ࡣ㸪᪤ሗ[5]ࢆᣑᙇࡋ㸪ᴗ✀ูࡔࡅ࡛࡞ࡃᴗつᶍู᪥ᮏᴗࡢ┤㏆ 11 ᖺ㛫࠾ࡅࡿ◊✲㛤 Ⓨᢞ㈨ࡢከゅືྥ㸪ᢏ⾡ⓗ㏆᥋ᛶ㸪◊✲㛤Ⓨ㛵㐃ᣦᶆࡢ㛵ಀࢆศᯒࡍࡿࡇࡼࡾ㸪◊✲㛤Ⓨ࣐ࢿࢪ ࣓ࣥࢺᙺ❧ࡘ♧၀ࢆᚓࡿࡇࢆ≺࠸ࡍࡿࠋ௨ୗ࡞◊✲┠ⓗࢆ♧ࡍ㸬 ձ ྠᴗ✀ෆ࡛ࡶᴗつᶍࡼࡾ◊✲㛤Ⓨከゅᗘࡸከゅࡢ㔜Ⅼศ㔝ࡣ␗࡞ࡗ࡚࠸ࡿࠋ ղ ♫యࡢ IT ᑐᛂࡋྛᴗ✀ࡢ◊✲㛤Ⓨࡀ IT ศ㔝ከゅࡋ࡚࠸ࡿࠋ2E07.pdf :2 ㏫ሗ㏻ಙᴗࡣࡢศ㔝ከゅࢆ㐍ࡵ࡚࠸ࡿࠋ ճ ◊✲㛤Ⓨᢞ㈨ࡢከゅࡣ㸪◊✲㛤Ⓨᙉᗘࡸ◊✲⪅ẚ⋡㸪◊✲⪅ 1 ேᙜࡾ◊✲㈝ࢆୖ᪼ࡉࡏࡿࠋ մ ◊✲㛤Ⓨᢞ㈨ࡢከゅࡼࡾ㸪ࡢᴗ✀࠾ࡼࡧᴗつᶍ㛫࡛ᢏ⾡ⓗ࡞㏆᥋ᛶࡀ⏕ࡌ࡚࠸ࡿࠋ ௨ୖࢆᐇドศᯒࡼࡾゎ᫂ࡍࡿࠋ 㸰㸬ศᯒᡭἲ ࢹ࣮ࢱ࣮࣋ࢫ ⥲ົ┬⤫ィᒁࡢࠗ⛉Ꮫᢏ⾡◊✲ㄪᰝሗ࿌࠘࠾࠸࡚㸪㈨ᮏ㔠1 ൨௨ୖࡢᴗࢆㄪᰝᑐ㇟ࡋࡓ♫ෆ ⏝◊✲㈝ࡢᴗ✀ูࡘ〇ရ࣭ࢧ࣮ࣅࢫศ㔝ู㞟ィ⾲ࢆᮏ✏ࡢࢹ࣮ࢱ࣮࣋ࢫࡋ࡚⏝ࡍࡿࠋศᯒ ⏝ࡍࡿᮇ㛫ࡣ2008 ᖺࡽ 2018 ᖺࡲ࡛ࡢ 11 ᖺ㛫ࡋࡓࠋㄪᰝᴗᩘࡣᖺࡼࡗ࡚ከᑡኚືࡣ࠶ࡿࡀᴫ ࡡ5000 ♫๓ᚋ࡛࠶ࡿࠋศᯒ࠶ࡓࡾ㸪ࡲࡎྛᴗ✀ࡑࡢᴗ✀ࡢຊ〇ရ࣭ࢧ࣮ࣅࢫศ㔝ࢆ୍ពᑐᛂ ࡉࡏࡿᚲせࡀ࠶ࡿࠋࡑࡢࡓࡵ⏝ࡍࡿࢹ࣮ࢱ࣮࣋ࢫⱝᖸࡢ㞟⣙ࢆࡋࡓࠋ㞟⣙᪉ἲࡢヲ⣽ࡣ㸪᪤ሗ[4] ࢆཧ↷ࡉࢀࡓ࠸ࠋࡲࡓᴗつᶍࡢศ㢮ࡣ㸪ࢹ࣮ࢱ࣮࣋ࢫྠࡌࡃ㈨ᮏ㔠ࡼࡾ㸪100 ൨௨ୖ㸪10㹼100 ൨ᮍ‶㸪1㹼10 ൨ᮍ‶ࡢ 3 ࡘ༊ศࡋ㸪ࡑࢀࡒࢀᴗ㸪୰ሀᴗ㸪୰ᑠᴗ␎ࡍࡿࠋ ከゅᗘࡢ ᐃ᪉ἲ ከゅᗘࢆ ࡿ௦⾲ⓗ࡞ᣦᶆࡣ࢚ࣥࢺࣟࣆ࣮ ᗘࣁ࣮ࣇࣥࢲ࣮ࣝᣦᩘࡀ࠶ࡿ㸬Jacquemin and Berry[6]ࡣ୧⪅ࢆẚ㍑ࡋ㸪ຊ〇ရศ㔝௨እࡢ◊✲㛤Ⓨᢞ㈨ࡣᑡ࡞࠸ࡀከࡃࡢ〇ရศ㔝ࢃࡓࡾከゅ ࡀ㐍ᒎࡍࡿሙྜ㸪࢚ࣥࢺࣟࣆ࣮ ᗘࡣࡑࡢኚࢆࡼࡾᫎࡋࡓ್࡞ࡿࡇࢆᣦࡋ࡚࠸ࡿࠋᐇ㝿㸪 ᴗࡀ␗ศ㔝ࡢ◊✲㛤Ⓨ╔ᡭࡍࡿࡁ㸪࠸ࡁ࡞ࡾᕧ㢠ࡢ◊✲ண⟬ࢆᢞࡌࡿࡇࡣᑡ࡞࠸ࠋᙜึࡣᑡ㢠 ࡢࢫࢱ࣮ࢺࢵࣉ◊✲ࡽ㛤ጞࡍࡿࡢࡀ㏻ᖖ࡛࠶ࢁ࠺ࠋࡇࡢほⅬࡽ㸪ᮏ✏࠾࠸࡚ࡶᑡ㢠ࡢ◊✲㛤Ⓨ ᢞ㈨ᑐࡍࡿឤᗘࡀ㧗࠸࢚ࣥࢺࣟࣆ࣮ ᗘࢆ⏝ࡍࡿࠋ ྛㄪᰝᖺ࠾ࡅࡿᴗ✀iࡢ〇ရศ㔝k ࡢ◊✲㛤Ⓨᢞ㈨㢠ࢆRik㸪ᴗ✀ᩘ࠾ࡼࡧ〇ရศ㔝ᩘࢆn ࡋ㸪 ᴗ✀iࡢ◊✲㛤Ⓨᢞ㈨⥲㢠༨ࡵࡿ〇ရศ㔝k ࡢྜpik࠾ࡃࠋ ᴗ✀iࡢᢏ⾡ⓗከゅᗘࢆ⾲ࡍ࢚ࣥࢺࣟࣆ࣮ ᗘEiࡣ㸪ḟᘧ࡛࠼ࡽࢀࡿࠋ
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k ik ik i p p E log 2 i E ࡢ್ࡣ◊✲㛤Ⓨࡢከゅࡀᗈ⠊ᅖࢃࡓࡿࡁࡃ࡞ࡿࠋ ᢏ⾡ⓗ㏆᥋ᛶ ᴗ✀㛫ࡢᢏ⾡ⓗ㏆᥋ᗘࡣ㸪Jaffe[7]ࡢᥦၐࡋࡓᢏ⾡㊥㞳ࢆ⟬ฟࡍࡿࡇࡼࡾ ᐃࡍࡿࠋ ྛㄪᰝᖺ࠾ࡅࡿᴗ✀iࡢᢏ⾡࣏ࢪࢩࣙࣥࢆ㸪◊✲㛤Ⓨᢞ㈨ࡢ〇ရศ㔝ูᵓᡂẚ࣋ࢡࢺࣝZi࡛⾲ࡍ㸪 ) , , , ( i1 i2 in i p p p Z ᴗ✀iᴗ✀ jࡢᢏ⾡㊥㞳Dij ࡣ㸪ḟᘧ࡛ᐃ⩏ࡉࢀࡿࠋ>
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k k jk ik k jk ik k k jk ik k jk ik t j j t i i t j i ij R R R R p p p p Z Z Z Z Z Z D 2 2 2 2 2 1 ࡇࡇ࡛㸪0 d Dij d1࡛࠶ࡾ㸪࣋ࢡࢺܼࣝǡ ܼࡢᡂࡍゅT ࡀ0 ㏆ࡃ࡞ࡿDijࡣ1 ㏆࡙ࡃࠋࡍ࡞ࢃ ࡕ୧ᴗ✀ࡢ◊✲㛤Ⓨᢞ㈨ࡢ᪉ྥᛶࡀ㏆࡙ࡁ㸪ከゅࡢ㢮ఝᛶࡀ㧗ࡃ࡞ࡿ㸪Dij ࡣ1 ㏆࠸್ࢆࡿࠋ 㸱㸬ศᯒ⤖ᯝ ᢏ⾡ⓗከゅᗘ ᅗ1 ࡞⣲ᮦ⣔ᴗ✀ࡢ࢚ࣥࢺࣟࣆ್࣮᥎⛣ࢆ♧ࡋ㸪ᅗ 2 ࡞ຍᕤ⤌❧⣔ᴗ✀࠾ࡼࡧሗ㏻ಙᴗࡢ ࢚ࣥࢺࣟࣆ್࣮᥎⛣ࢆ♧ࡍࠋᅗ1 ᅗ 2 ࢆẚ㍑ࡍࡿ㸪⣲ᮦ⣔ᴗ✀࡛ࡣຍᕤ⤌❧⣔ᴗ✀ࡼࡾ┦ᑐⓗ㧗 ࠸Ỉ‽࡛᥎⛣ࡋ࡚࠾ࡾ㸪ከゅࡢ⛬ᗘࡀ㧗࠸ࠋࡲࡓ་⸆ရ⮬ື㌴ࡣᴗ✀ࡼࡾ࢚ࣥࢺࣟࣆ್࣮ࡀపࡃ 0.5 ᮍ‶࡛᥎⛣ࡋ࡚࠾ࡾᑓᴗᗘࡀ㧗࠸≧ἣࡀ⥆࠸࡚࠸ࡿࠋᅗ1 ⣲ᮦ⣔ᴗ✀ࡢ࢚ࣥࢺࣟࣆ್࣮ ᅗ 2 ຍᕤ⤌❧ᴗ✀ሗ㏻ಙᴗࡢ࢚ࣥࢺࣟࣆ್࣮ ࡉࡽ26 ᴗ✀ࡘ࠸࡚ᴗつᶍู࢚ࣥࢺࣟࣆ್࣮ࡢ᥎⛣ࢆ ᐃࡋࡓࠋ◊✲㛤Ⓨᢞ㈨ࡢከゅࡣ㸪 ᴗయຊࡸேᮦ࡞ࡢ⤒Ⴀ㈨※ࡢどⅬࡽ㸪ᴗࡀ୰ሀ࣭୰ᑠᴗࡼࡾ✚ᴟⓗ᥎ ࡉࢀࡿࡀ㸪ᐇ㝿 ࡣ୰ሀ࣭୰ᑠᴗࡢከゅࡀᴗࢆୖᅇࡿᴗ✀ࡶᑡ࡞ࡽࡎᏑᅾࡍࡿࠋᅗ3 ࡢ㔠ᒓ〇ရ〇㐀ᴗᅗ 4 ࡢᴗົ⏝ᶵᲔჾල〇㐀ᴗࡣࡑࡢ୍࡛࠶ࡿࠋ⣲ᮦࡸ㒊ရࡢᡂ⇍ᴗ✀ࡲࡓࡣ┦ᑐⓗከရ✀ࡢ〇ရ⩌ ࢆᒎ㛤ࡍࡿᴗ✀࠾࠸࡚㸪ྠᵝ୰ሀ࣭୰ᑠᴗࡢከゅࡀᴗࡼࡾ㐍ᒎࡍࡿഴྥࡀ⌧ࢀࡓࠋ ᅗ3 㔠ᒓ〇ရ〇㐀ᴗࡢᴗつᶍู᥎⛣ ᅗ 4 ᴗົ⏝ᶵᲔჾල〇㐀ᴗࡢᴗつᶍู᥎⛣ ḟ㸪ᴗ✀ู◊✲㛤Ⓨᢞ㈨㢠ࡢ〇ရ࣭ࢧ࣮ࣅࢫศ㔝ูศᕸᅗࢆ♧ࡋ㸪ከゅ≧ἣࡢ≉ᚩࢆどぬⓗ ᢕᥱࡍࡿࠋ⣬ᖜࡢ㒔ྜୖ㸪◊✲㛤Ⓨᢞ㈨㢠ࡀቑຍࡍࡿ୍᪉㸪ከゅỈ‽ࡣపῶࡍࡿ᪉ྥ࠶ࡿᴗ✀ࡽ ࡣ⮬ື㌴࣭ྠ㝃ᒓရ〇㐀ᴗࢆ㑅ࡧ㸪ᴗ୰ሀᴗࢆᅗ5 ᅗ 6 ♧ࡍࠋ◊✲㛤Ⓨᢞ㈨㢠ከゅᗘ ࡀࡶቑຍࡍࡿᴗ✀ࡽࡣሗ㏻ಙᴗࡢ୰ሀᴗࢆᅗ7 ♧ࡍࠋ◊✲㛤Ⓨᢞ㈨㢠ࡣῶᑡࡋ࡚࠸ࡿࡀከ ゅᗘࡣ⥔ᣢࡋ࡚࠸ࡿᴗ✀ࡽࡣ㔠ᒓ〇ရ〇㐀ᴗࡢ୰ሀᴗࢆᅗ8 ♧ࡍࠋ ᅗ5 ⮬ື㌴࣭ྠ㝃ᒓရ〇㐀ᴗ㸦ᴗ㸧 ᅗ 6 ⮬ື㌴࣭ྠ㝃ᒓရ〇㐀ᴗ㸦୰ሀᴗ㸧 0.0 0.5 1.0 1.5 2.0 2.5 3.0 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 [䜶䞁䝖䝻䝢䞊್] 㖔ᴗ䠈᥇▼ᴗ䠈◁᥇ྲྀᴗ ⧄⥔ᕤᴗ 䝟䝹䝥䞉⣬䞉⣬ຍᕤရ〇㐀ᴗ ་⸆ရ〇㐀ᴗ ⥲ྜᏛᕤᴗ Ἔ⬡䡡ሬᩱ〇㐀ᴗ 䝂䝮〇ရ〇㐀ᴗ 㕲㗰ᴗ 㠀㕲㔠ᒓ〇㐀ᴗ 㔠ᒓ〇ရ〇㐀ᴗ 0.0 0.5 1.0 1.5 2.0 2.5 3.0 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 [䜶䞁䝖䝻䝢䞊್] ୍⯡ᶵᲔჾල〇㐀ᴗ ᴗົ⏝ᶵᲔჾල〇㐀ᴗ 㟁ẼᶵᲔჾල〇㐀ᴗ 㟁Ꮚ㒊ရ䞉ሗ㏻ಙᶵᲔ ჾල〇㐀ᴗ ⮬ື㌴䞉ྠ㝃ᒓရ〇㐀ᴗ 䛭䛾䛾㍺㏦⏝ᶵᲔჾල 〇㐀ᴗ ሗ㏻ಙᴗ 0.0 0.5 1.0 1.5 2.0 2.5 3.0 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 [䜶䞁䝖䝻䝢䞊್] ᴗ✀య ᴗ ୰ሀᴗ ୰ᑠᴗ 0.0 0.5 1.0 1.5 2.0 2.5 3.0 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 [䜶䞁䝖䝻䝢䞊್] ᴗ✀య ᴗ ୰ሀᴗ ୰ᑠᴗ 0 2 4 6 8 10 12 14 16 ㎰ ᯘ䡡 Ỉ ⏘ ရ 㖔 ᴗ ᘓ ⠏䡡 ᅵ ᮌ 㣗 ᩱ ရ ⧄ ⥔ 呍 Ꮫ ⧄ ⥔ 吨 呂 吮䡡 ⣬ ฟ ∧䡡 ༳ ๅ ↓ ᶵ 呍 ᭷ ᶵ Ꮫ ᕤ ᴗ 〇 ရ Ἔ ⬡䡡 ሬ ᩱ ་ ⸆ ရ 厾 叏 叏 Ꮫ ᕤ ᴗ 〇 ရ ▼ Ἔ 呍 ▼ Ⅳ 吋 吷 〇 ရ ❔ ᴗ 呍 ᅵ ▼ 㕲 㗰 㠀 㕲 㔠 ᒓ 㔠 ᒓ 〇 ရ ୍ ⯡ ᶵ Ე 㟁 Ẽ ᶵ Ე ሗ ㏻ ಙ ᶵ Ე 呍 㟁 Ꮚ 㒊 ရ ⮬ ື ㌴ ⮬ ື ㌴ ௨ እ 叏 ㍺ ㏦ ⏝ ᶵ Ე ⢭ ᐦ ᕤ ᴗ 〇 ရ 厾 叏 叏 ᕤ ᴗ 〇 ရ 㟁 Ẽ 䡡 吃 吐 吔 听 吟 叽 叾 叹 呍 ሗ ฎ ⌮ ◊ ✲ 㛤 Ⓨ ᢞ ㈨ 㢠 [ ᑐ ᩘ ್] 2008 2013 2018 0 2 4 6 8 10 12 14 16 ㎰ ᯘ䡡 Ỉ ⏘ ရ 㖔 ᴗ ᘓ ⠏䡡 ᅵ ᮌ 㣗 ᩱ ရ ⧄ ⥔ 呍 Ꮫ ⧄ ⥔ 吨 呂 吮䡡 ⣬ ฟ ∧ 䡡 ༳ ๅ ↓ ᶵ 呍 ᭷ ᶵ Ꮫ ᕤ ᴗ 〇 ရ Ἔ ⬡ 䡡 ሬ ᩱ ་ ⸆ ရ 厾 叏 叏 Ꮫ ᕤ ᴗ 〇 ရ ▼ Ἔ 呍 ▼ Ⅳ 吋 吷 〇 ရ ❔ ᴗ 呍 ᅵ ▼ 㕲 㗰 㠀 㕲 㔠 ᒓ 㔠 ᒓ 〇 ရ ୍ ⯡ ᶵ Ე 㟁 Ẽ ᶵ Ე ሗ ㏻ ಙ ᶵ Ე 呍 㟁 Ꮚ 㒊 ရ ⮬ ື ㌴ ⮬ ື ㌴ ௨ እ 叏 ㍺ ㏦ ⏝ ᶵ Ე ⢭ ᐦ ᕤ ᴗ 〇 ရ 厾 叏 叏 ᕤ ᴗ 〇 ရ 㟁 Ẽ䡡 吃 吐 吔 听 吟 叽 叾 叹 呍 ሗ ฎ ⌮ ◊ ✲ 㛤 Ⓨ ᢞ ㈨ 㢠 [ ᑐ ᩘ ್] 2008 2013 2018
2E07.pdf :4 ᅗ7 ሗ㏻ಙᴗ㸦୰ሀᴗ㸧 ᅗ 8 㔠ᒓ〇ရ〇㐀ᴗ㸦୰ሀᴗ㸧 ᅗ5 ࡼࡾ⮬ື㌴࣭ྠ㝃ᒓရࡢᴗࡣ㸪2008 ᖺⅬ࡛ࡣ⧄⥔࣭Ꮫ⧄⥔ࡸἜ⬡࣭ሬᩱ࡞ࡢ⣲ᮦ⣔ศ 㔝࠾ࡼࡧᮏᴗ┤᥋㛵ಀࡢᑡ࡞࠸ᘓ⠏࣭ᅵᮌศ㔝ࡶከゅࡋ࡚࠸ࡓࡀ㸪ࡑࡢᚋᛴ㏿⦰ᑠࡲࡓࡣ᧔㏥ ࡋ࡚࠸ࡿࠋ௦ࢃࡾ2018 ᖺⅬ࡛ࡣ㸪ᮏᴗ࡛࠶ࡿ⮬ື㌴ࡑࡢᵓᡂせ⣲࡛࠶ࡿᶵᲔ㒊ရ㸪⢭ᐦᕤᴗ〇 ရ࡞ࡢ◊✲㛤Ⓨὀຊࡋ࡚࠸ࡿࠋࡇࢀᑐࡋ㸪ᅗ6 ࡼࡾ⮬ື㌴࣭ྠ㝃ᒓရࡢ୰ሀᴗࡣᴗࡢᡭ ࡅ࡚࠸࡞࠸ሗ㏻ಙᶵᲔࡸࢯࣇࢺ࢙࢘ศ㔝ࡢ◊✲㛤Ⓨࢆᙉࡋ࡚࠸ࡿࠋEV ㌴ࡸ⮬ື㐠㌿ᢏ⾡ࡢ◊✲ 㛤Ⓨ࠾࠸࡚ᡭ㛵㐃ᴗ㛫࡛ศᢸࡀ⾜࡞ࢃࢀ࡚࠸ࡿぢࡽࢀࡿࠋ ᅗ7 ࡼࡾሗ㏻ಙᴗࡢ୰ሀᴗࡣ㸪ࡑࡢຊ〇ရศ㔝࡛࠶ࡿࢯࣇࢺ࢙࣭࢘ሗฎ⌮ྠつᶍࡢ◊✲ 㛤Ⓨᢞ㈨ࢆ㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔศ㔝ᑐࡋᐇࡋ࡚࠸ࡿࠋᥖ㍕ࡣࡋ࡚࠸࡞࠸ࡀᴗ୰ᑠᴗࡶ ྠᵝ࡛࠶ࡿࠋࡲࡓ୰ሀᴗ୰ᑠᴗࡣฟ∧࣭༳ๅศ㔝ከゅࢆ㐍ࡵ࡚࠸ࡿࠋࡑࡢ୍᪉࡛་⸆ရࡸ⮬ ື㌴ศ㔝ࡢ◊✲㛤Ⓨࡣ㸪ࡢᴗつᶍ࠾࠸࡚ࡶᐇࡉࢀ࡚࠸࡞࠸ࠋ ᅗ8 ࡼࡾ㔠ᒓ〇ရ〇㐀ᴗࡢ୰ሀᴗࡣ㸪2008 ᖺⅬ࡛ࡍ࡛㔠ᒓ〇ရࡢ࣮ࣘࢨ࡛࠶ࡿຍᕤ⤌❧ᴗ✀ ᗈ⠊ከゅࡋ࡚࠾ࡾ㸪2018 ᖺⅬ࠾࠸࡚ࡶࡑࡢഴྥࡣ⥔ᣢࡉࢀ࡚࠸ࡿࠋࡑࡢ୍᪉࡛ᕝୖ᪉ྥࡢ ᴗ✀ࡢ◊✲㛤Ⓨࡣᢞ㈨ศ㔝ࢆ⤠ࡿࡶほ ᮇ㛫ෆ࡛㢖⦾ࡑࡢᑐ㇟ࢆぢ┤ࡋ࡚࠸ࡿࠋ ከゅᗘ◊✲㛤Ⓨ㛵㐃ᣦᶆࡢ┦㛵ศᯒ ᮏ⠇࡛ࡣྛᴗ✀ࡢከゅᗘ◊✲㛤Ⓨ㛵㐃ᣦᶆࡢ┦㛵ࢆᴗつᶍูศᯒࡍࡿࠋ◊✲㛤Ⓨ㛵㐃ᣦᶆ ࡋ࡚ࡣ㸪◊✲㛤Ⓨᙉᗘ㸪ᚑᴗ⪅⥲ᩘ༨ࡵࡿ◊✲⪅ẚ⋡㸪◊✲⪅ 1 ேᙜࡾ♫ෆ⏝◊✲㈝ࢆ⏝ࡍࡿࠋ ࠸ࡎࢀࡶࡑࡢᩘ್ࡀࡁ࠸◊✲㛤Ⓨάືࢆ㔜どࡋ࡚࠸ࡿࡇࢆ♧ࡍࠋ ᴗ✀࡛ࣞ࣋ࣝࡢୖグ4 ᣦᶆࡢ┦㛵ࡣ㸪2008 ᖺ 2017 ᖺ࡛ࡰྠᵝࡢഴྥ࡛࠶ࡾ㸦᪤ሗ[5]㸧㸪2018 ᖺ ࡢ ᐃ⤖ᯝࡶ๓ᖺࡁ࡞ᕪ␗ࡣ࡞ࡗࡓࠋᑡ࡞ࡃࡶ┤㏆ 11 ᖺ㛫࡛ࡣ୍㈏ࡋࡓ㛵ಀ࠶ࡿぢࡽࢀ ࡿࠋࡑࡇ࡛ᮏ✏࡛ࡣ2018 ᖺ࠾࠸࡚ᴗつᶍู 4 ᣦᶆࡢ┦㛵ࢆ ᐃࡋࡓ⤖ᯝࢆ⾲ 1㹼⾲ 3 ♧ࡍࠋ ⾲1 ᴗࡢ 4 ᣦᶆࡢ┦㛵ಀᩘ್㸦2018 ᖺ㸧 㸦ὀ㸧እࢀ್࡛࠶ࡿࠕ་⸆ရࠖ㸪࠾ࡼࡧࢹ࣮ࢱࡢ࡞࠸ࠕ㎰ᯘỈ⏘ᴗࠖࠕ㖔ᴗࠖࠕ㟁Ẽ࣭࢞ࢫࠖࢆ㝖ࡃ22 ᴗ✀࡛⟬ฟ ⾲2 ୰ሀᴗࡢ 4 ᣦᶆࡢ┦㛵ಀᩘ್㸦2018 ᖺ㸧 㸦ὀ㸧ࢹ࣮ࢱࡢ࡞࠸ࠕ㎰ᯘỈ⏘ᴗࠖࠕ㖔ᴗࠖࢆ㝖ࡃ24 ᴗ✀࡛⟬ฟ 0 2 4 6 8 10 12 14 ㎰ ᯘ䡡 Ỉ ⏘ ရ 㖔 ᴗ ᘓ ⠏䡡 ᅵ ᮌ 㣗 ᩱ ရ ⧄ ⥔ 呍 Ꮫ ⧄ ⥔ 吨 呂 吮䡡 ⣬ ฟ ∧䡡 ༳ ๅ ↓ ᶵ 呍 ᭷ ᶵ Ꮫ ᕤ ᴗ 〇 ရ Ἔ ⬡䡡 ሬ ᩱ ་ ⸆ ရ 厾 叏 叏 Ꮫ ᕤ ᴗ 〇 ရ ▼ Ἔ 呍 ▼ Ⅳ 吋 吷 〇 ရ ❔ ᴗ 呍 ᅵ ▼ 㕲 㗰 㠀 㕲 㔠 ᒓ 㔠 ᒓ 〇 ရ ୍ ⯡ ᶵ Ე 㟁 Ẽ ᶵ Ე ሗ ㏻ ಙ ᶵ Ე 呍 㟁 Ꮚ 㒊 ရ ⮬ ື ㌴ ⮬ ື ㌴ ௨ እ 叏 ㍺ ㏦ ⏝ ᶵ Ე ⢭ ᐦ ᕤ ᴗ 〇 ရ 厾 叏 叏 ᕤ ᴗ 〇 ရ 㟁 Ẽ䡡 吃 吐 吔 听 吟 叽 叾 叹 呍 ሗ ฎ ⌮ ◊ ✲ 㛤 Ⓨ ᢞ ㈨ 㢠 [ ᑐ ᩘ ್] 2008 2013 2018 0 2 4 6 8 10 12 ㎰ ᯘ䡡 Ỉ ⏘ ရ 㖔 ᴗ ᘓ ⠏䡡 ᅵ ᮌ 㣗 ᩱ ရ ⧄ ⥔ 呍 Ꮫ ⧄ ⥔ 吨 呂 吮䡡 ⣬ ฟ ∧ 䡡 ༳ ๅ Ꮫ ᕤ ᴗ 〇 ရ Ἔ ⬡䡡 ሬ ᩱ ་ ⸆ ရ 厾 叏 叏 Ꮫ ᕤ ᴗ 〇 ရ ▼ Ἔ 呍 ▼ Ⅳ 吋 吷 〇 ရ ❔ ᴗ 呍 ᅵ ▼ 㕲 㗰 㠀 㕲 㔠 ᒓ 㔠 ᒓ 〇 ရ ୍ ⯡ ᶵ Ე 㟁 Ẽ ᶵ Ე ሗ ㏻ ಙ ᶵ Ე 呍 㟁 Ꮚ 㒊 ရ ⮬ ື ㌴ ⮬ ື ㌴ ௨ እ 叏 ㍺ ㏦ ⏝ ᶵ Ე ⢭ ᐦ ᕤ ᴗ 〇 ရ 厾 叏 叏 ᕤ ᴗ 〇 ရ 㟁 Ẽ 䡡 吃 吐 吔 听 吟 叽 叾 叹 呍 ሗ ฎ ⌮ ◊ ✲ 㛤 Ⓨ ᢞ ㈨ 㢠 [ ᑐ ᩘ ್] 2008 2013 2018 ከゅᗘ 䠄䜶䞁䝖䝻䝢䞊್䠅 ◊✲㛤Ⓨᙉᗘ>㸣@ ᚑᴗ⪅⥲ᩘ༨ࡵࡿ ◊✲⪅ẚ⋡>㸣@ ◊✲⪅ேᙜࡾ ♫ෆ⏝◊✲㈝>@ ከゅᗘ 㻝 ◊✲㛤Ⓨᙉᗘ 㻜㻚㻜㻠㻝 㻝 ◊✲⪅ẚ⋡ 㻜㻚㻜㻥㻠 㻜㻚㻤㻞㻞 㻝 ♫ෆ⏝◊✲㈝ 㻙㻜㻚㻞㻜㻜 㻜㻚㻜㻠㻥 㻙㻜㻚㻞㻡㻣 㻝 ከゅᗘ 䠄䜶䞁䝖䝻䝢䞊್䠅 ◊✲㛤Ⓨᙉᗘ>㸣@ ᚑᴗ⪅⥲ᩘ༨ࡵࡿ ◊✲⪅ẚ⋡>㸣@ ◊✲⪅ேᙜࡾ ♫ෆ⏝◊✲㈝>@ ከゅᗘ 㻝 ◊✲㛤Ⓨᙉᗘ 㻙㻜㻚㻞㻞㻜 㻝 ◊✲⪅ẚ⋡ 㻙㻜㻚㻜㻝㻢 㻜㻚㻤㻡㻝 㻝 ♫ෆ⏝◊✲㈝ 㻙㻜㻚㻠㻣㻤 㻜㻚㻟㻣㻟 㻜㻚㻝㻟㻡 㻝
⾲3 ୰ᑠᴗࡢ 4 ᣦᶆࡢ┦㛵ಀᩘ್㸦2018 ᖺ㸧 㸦ὀ㸧ࢹ࣮ࢱࡢ࡞࠸ࠕ㎰ᯘỈ⏘ᴗࠖࠕ㟁Ẽ࣭࢞ࢫࠖࢆ㝖ࡃ24 ᴗ✀࡛⟬ฟ ྛ⾲ࡼࡾ㸪ࡢᴗつᶍ࠾࠸࡚ࡶከゅᗘ◊✲㛤Ⓨᙉᗘ㸪◊✲⪅ẚ⋡ࡢ㛫ࡣࢇ┦㛵ࡀ࡞ ࠸ࠋࡍ࡞ࢃࡕ◊✲㛤Ⓨࡢከゅࢆᣑࡋ࡚ࡶ㸪ୖ㧗༨ࡵࡿ◊✲㛤Ⓨᢞ㈨ࡢྜࡸ◊✲⪅ᩘࢆቑࡸࡍ ࡢ࡛ࡣ࡞ࡃ㸪◊✲㛤Ⓨ㈝ࡢ㓄ศࡸ◊✲⪅ࡢ㓄⨨ࢆኚ࠼࡚ᑐᛂࡋ࡚࠸ࡿ᥎ᐹࡉࢀࡿࠋ᪤Ꮡ◊✲࡛ࡣ Garcia-Vega[8]ࡢศᯒࡀ♧ࡍࡼ࠺ከゅᗘ◊✲㛤Ⓨᙉᗘࡢ㛫ṇ┦㛵ࡀ࠶ࡿࡍࡿࡶࡢࡀከ࠸ࡀ㸪 ᑡ࡞ࡃࡶ2008 ᖺ௨㝆┤㏆ࡲ࡛ࡢ᪥ᮏᴗࡢᴗ✀࡛ࣞ࣋ࣝࡣᡂ❧ࡋ࡚࠸࡞࠸ࠋ ከゅᗘ◊✲⪅1 ேᙜࡾ♫ෆ⏝◊✲㈝ࡢ㛫ࡣ㸪୰ሀ࣭୰ᑠᴗ࠾࠸࡚ᙅ࠸㈇ࡢ┦㛵ࡀぢࡽࢀ ࡿࠋከゅࡀ㐍ᒎࡍࡿ㸪◊✲⪅1 ேᙜࡾࡢ㓄ศ◊✲㈝ࡣῶࡍࡿഴྥ࠶ࡿࠋࡇࢀᑐࡋ◊✲㛤Ⓨᙉ ᗘ◊✲⪅ẚ⋡ࡣᙉ࠸ṇࡢ┦㛵ࡀ࠶ࡿࠋ◊✲㛤Ⓨᙉᗘࢆ㧗ࡵࡿ◊✲⪅ᩘࡶቑဨࡍࡿࡇࡀศࡿࠋ ࡲࡓ◊✲㛤Ⓨᙉᗘ◊✲⪅1 ேᙜࡾ♫ෆ⏝◊✲㈝ࡢ㛫ࡣ㸪୰ሀ࣭୰ᑠᴗ࠾࠸࡚ᙅ࠸ṇࡢ┦㛵ࡀ ⌧ࢀ࡚࠸ࡿࠋ◊✲㛤Ⓨᙉᗘࢆ㧗ࡵࡿ㸪ᴗ✀ࡼࡗ࡚ࡣ◊✲⪅1 ேᙜࡾ◊✲㈝ࢆࡸࡸቑࡸࡍഴྥ࠶ࡿࠋ ᴗつᶍูᴗ✀㛫ࡢᢏ⾡㊥㞳 ศᯒᑐ㇟26 ᴗ✀ࢆᴗつᶍู 3 㝵⣭ศࡅ㸪┦ࡢᢏ⾡ⓗ㏆᥋ᛶࢆ 2.3 ⠇ࡢᢏ⾡㊥㞳ࡼࡾ ᐃ ࡋࡓࠋ2008 ᖺ 2018 ᖺࡢ ᐃ್ࢆẚ㍑ࡍࡿࡇࡼࡾ㸪ከゅࡼࡿᢏ⾡ⓗ㏆᥋ᛶࡢኚࢆᢕᥱ࡛ࡁ ࡿࠋ ᐃ⤖ᯝࢆࡍ࡚ᥖ㍕ࡍࡿ୧ᖺࡶ78 ⾜78 ิࡢ⾲࡞ࡾ↹㞧࡞ࡓࡵ㸪ᢏ⾡㊥㞳ࡀ㢧ⴭ᥋㏆ ࡋࡓᴗ✀㛫ࡽ୍㒊ࡢࡳᥖ㍕ࡍࡿࠋ⾲4 ࡣ 2008 ᖺࡢᢏ⾡㊥㞳ࢆ㸪⾲ 5 ࡣ 2018 ᖺࡢᢏ⾡㊥㞳ࢆ♧ ࡋࡓࠋ࡞࠾ᑐゅᡂศࡣྠࡌ್࡛࠶ࡿࡓࡵ✵ⓑࡋ࡚࠶ࡿࠋᢏ⾡㊥㞳ࡀ0.3 ௨ୖ 0.5 ᮍ‶ 0.5 ௨ୖࡢ್ ࡣ⃰ᗘࡢ␗࡞ࡿ⥙ࡅࢆࡋࡓࠋ ⾲4 4 ᴗ✀ࡢᢏ⾡㊥㞳㸦2008 ᖺ㸧 ⾲5 4 ᴗ✀ࡢᢏ⾡㊥㞳㸦2018 ᖺ㸧 ⾲4 ⾲ 5 ࡼࡾ༳ๅᴗ㸪㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔ㸪ሗ㏻ಙᴗࡢ┦ࡢᢏ⾡㊥㞳ࡣ㸪2008 ᖺࡽ 2018 ᖺࡅ࡚᥋㏆ࡋ㸪≉ᴗつᶍࡀࡁ࠸0.9 ๓ᚋࡢ㧗࠸್ࢆࡗ࡚࠸ࡿࠋࡍ࡞ࢃࡕࡇࡢ 3 ᴗ✀ࡢ◊ ✲㛤Ⓨ᪉ྥࡣࡰྠࡌ࡞ࡾࡘࡘ࠶ࡿࠋࡲࡓ㸪㠀㕲㔠ᒓࡶᴗつᶍࡀࡁ࠸㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔ ࡸሗ㏻ಙᴗ᥋㏆ࡋ࡚࠸ࡿࠋ㠀㕲㔠ᒓ㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔࡣྠᴗ✀ෆ࡛ࡣᴗつᶍࡀ␗࡞ࡗ࡚ ከゅᗘ 䠄䜶䞁䝖䝻䝢䞊್䠅 ◊✲㛤Ⓨᙉᗘ>㸣@ ᚑᴗ⪅⥲ᩘ༨ࡵࡿ ◊✲⪅ẚ⋡>㸣@ ◊✲⪅ேᙜࡾ ♫ෆ⏝◊✲㈝>@ ከゅᗘ 㻝 ◊✲㛤Ⓨᙉᗘ 㻜㻚㻜㻞㻞 㻝 ◊✲⪅ẚ⋡ 㻜㻚㻝㻞㻝 㻜㻚㻤㻜㻠 㻝 ♫ෆ⏝◊✲㈝ 㻙㻜㻚㻠㻞㻟 㻜㻚㻟㻤㻝 㻜㻚㻝㻜㻟 㻝 ൨㹼 ൨ ൨㹼 ൨ ൨ ௨ୖ ൨㹼 ൨ ൨㹼 ൨ ൨ ௨ୖ ൨㹼 ൨ ൨㹼 ൨ ൨ ௨ୖ ൨㹼 ൨ ൨㹼 ൨ ൨ ௨ୖ 㹼൨ᮍ‶ 㻝 㹼൨ᮍ‶ 㻜㻚㻟㻜㻡 㻝 ൨௨ୖ 㻜㻚㻞㻡㻡 㻜㻚㻥㻝㻡 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻝㻢 㻜㻚㻜㻠㻟 㻜㻚㻜㻣㻟 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻞㻣 㻜㻚㻜㻥㻝 㻜㻚㻝㻡㻜 㻜㻚㻥㻢㻥 㻝 ൨௨ୖ 㻜㻚㻜㻞㻞 㻜㻚㻟㻞㻣 㻜㻚㻡㻡㻥 㻜㻚㻢㻢㻞 㻜㻚㻣㻜㻡 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻜㻜 㻜㻚㻟㻥㻣 㻜㻚㻢㻤㻞 㻜㻚㻝㻞㻝 㻜㻚㻞㻝㻠 㻜㻚㻣㻥㻜 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻜㻟 㻜㻚㻠㻝㻜 㻜㻚㻢㻥㻥 㻜㻚㻝㻝㻞 㻜㻚㻞㻜㻡 㻜㻚㻣㻥㻣 㻜㻚㻥㻥㻝 㻝 ൨௨ୖ 㻜㻚㻜㻜㻣 㻜㻚㻠㻜㻜 㻜㻚㻢㻤㻞 㻜㻚㻝㻞㻝 㻜㻚㻞㻝㻡 㻜㻚㻣㻥㻟 㻜㻚㻥㻥㻣 㻜㻚㻥㻥㻜 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻜㻝 㻜㻚㻜㻤㻠 㻜㻚㻜㻢㻟 㻜㻚㻜㻜㻥 㻜㻚㻜㻜㻥 㻜㻚㻜㻠㻜 㻜㻚㻜㻠㻡 㻜㻚㻜㻣㻢 㻜㻚㻝㻜㻟 㻝 㹼൨ᮍ‶ 㻜 㻜㻚㻜㻤㻣 㻜㻚㻜㻣㻜 㻜㻚㻜㻝㻜 㻜㻚㻜㻝㻝 㻜㻚㻜㻡㻜 㻜㻚㻜㻡㻣 㻜㻚㻜㻤㻤 㻜㻚㻝㻝㻡 㻝㻚㻜㻜㻜 㻝 ൨௨ୖ 㻜 㻜㻚㻠㻜㻡 㻜㻚㻢㻣㻜 㻜㻚㻜㻥㻢 㻜㻚㻝㻤㻟 㻜㻚㻣㻡㻟 㻜㻚㻥㻞㻥 㻜㻚㻥㻡㻡 㻜㻚㻥㻠㻡 㻜㻚㻟㻡㻥 㻜㻚㻟㻣㻜 㻝 ᴗ✀䞉ᴗつᶍ ༳ๅ࣭ྠ㛵㐃ᴗ 㠀㕲㔠ᒓ〇㐀ᴗ 㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔჾල〇㐀ᴗ ሗ㏻ಙᴗ ༳ๅ 㠀㕲㔠ᒓ 㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔ ሗ㏻ಙᴗ ൨㹼 ൨ ൨㹼 ൨ ൨ ௨ୖ ൨㹼 ൨ ൨㹼 ൨ ൨ ௨ୖ ൨㹼 ൨ ൨㹼 ൨ ൨ ௨ୖ ൨㹼 ൨ ൨㹼 ൨ ൨ ௨ୖ 㹼൨ᮍ‶ 㻝 㹼൨ᮍ‶ 㻜㻚㻠㻜㻡 㻝 ൨௨ୖ 㻜㻚㻞㻞㻥 㻜㻚㻠㻠㻟 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻟㻢 㻜㻚㻜㻜㻟 㻜㻚㻜㻞㻤 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻝㻥 㻜㻚㻜㻡㻝 㻜㻚㻠㻤㻜 㻜㻚㻤㻠㻠 㻝 ൨௨ୖ 㻜㻚㻝㻣㻝 㻜㻚㻜㻡㻥 㻜㻚㻡㻣㻣 㻜㻚㻣㻢㻟 㻜㻚㻥㻟㻞 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻜㻝 㻜㻚㻜㻤㻜 㻜㻚㻤㻡㻤 㻜㻚㻜㻟㻟 㻜㻚㻡㻞㻡 㻜㻚㻢㻜㻠 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻜㻟 㻜㻚㻜㻤㻢 㻜㻚㻤㻣㻠 㻜㻚㻜㻞㻥 㻜㻚㻡㻠㻡 㻜㻚㻡㻥㻤 㻜㻚㻥㻣㻡 㻝 ൨௨ୖ 㻜㻚㻜㻜㻝 㻜㻚㻜㻤㻡 㻜㻚㻤㻣㻝 㻜㻚㻜㻞㻥 㻜㻚㻡㻠㻝 㻜㻚㻡㻥㻣 㻜㻚㻥㻤㻟 㻜㻚㻥㻥㻥 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻜㻝 㻜㻚㻜㻤㻜 㻜㻚㻜㻤㻠 㻜㻚㻜㻜㻟 㻜㻚㻜㻟㻤 㻜㻚㻜㻡㻢 㻜㻚㻜㻡㻤 㻜㻚㻜㻤㻟 㻜㻚㻜㻥㻟 㻝 㹼൨ᮍ‶ 㻜㻚㻜㻜㻜 㻜㻚㻝㻜㻡 㻜㻚㻠㻣㻜 㻜㻚㻜㻝㻠 㻜㻚㻞㻣㻝 㻜㻚㻟㻝㻡 㻜㻚㻠㻤㻞 㻜㻚㻡㻞㻣 㻜㻚㻡㻟㻟 㻜㻚㻤㻤㻠 㻝 ൨௨ୖ 㻜 㻜㻚㻝㻜㻝 㻜㻚㻤㻟㻞 㻜㻚㻜㻞㻡 㻜㻚㻡㻝㻠 㻜㻚㻡㻡㻣 㻜㻚㻤㻥㻥 㻜㻚㻥㻡㻟 㻜㻚㻥㻡㻝 㻜㻚㻟㻡㻢 㻜㻚㻣㻠㻢 㻝 ᴗ✀䞉ᴗつᶍ ༳ๅ࣭ྠ㛵㐃ᴗ 㠀㕲㔠ᒓ〇㐀ᴗ 㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔჾල〇㐀ᴗ ሗ㏻ಙᴗ ༳ๅ 㠀㕲㔠ᒓ 㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔ ሗ㏻ಙᴗ
2E07.pdf :6 ࡶᢏ⾡ⓗ࡞㏆᥋ᛶࡣ㧗࠸ࡀ㸪༳ๅሗ㏻ಙᴗ࡛ࡣྠᴗ✀ෆࡢᴗ୰ᑠᴗࡢ㊥㞳ࡣ㞳ࢀ࡚࠸ࡿࠋ 㸲㸬⪃ ᐹ ๓❶ࡢศᯒ⤖ᯝᇶ࡙ࡁ㸪ᮏ✏ࡢ◊✲┠ⓗグࡋࡓྛ㡯┠ࡘ࠸࡚⪃ᐹࡍࡿࠋ ձ ྠᴗ✀ෆ࡛ࡢᴗつᶍࡼࡿ◊✲㛤Ⓨከゅᗘࡸከゅࡢ㔜Ⅼศ㔝ࡢᕪ␗ ᴗ✀ࡋ࡚ࡢከゅᗘࡀᴗ✀ࡼࡾ┦ᑐⓗ㧗ࡃ㸪ࡘ୰ሀ࣭୰ᑠᴗࡢከゅࡀᴗࢆୖᅇࡿᴗ ✀ࡣ㸪㔠ᒓ〇ရ㸪ᴗົ⏝ᶵᲔჾලࡢ㕲㗰ᴗ࡞ࡀ࠶ࡗࡓࠋࡇࢀᑐࡋ㸪⧄⥔㸪༳ๅ㸪Ἔ⬡࣭ሬᩱ㸪 ❔ᴗ࣭ᅵ▼࡞ࡣᴗࡢከゅࡀ୰ሀ࣭୰ᑠᴗࡼࡾୖᅇࡗ࡚࠸ࡿࠋከ✀㢮ࡢ㒊ရࡲࡓࡣ〇ရ⩌ࢆ〇 㐀ࡍࡿᴗ✀࡛ࡣ㸪୰ሀ࣭୰ᑠᴗ࡛ࡶከゅࡀ㐍ᒎࡍࡿぢࡽࢀࡿࠋࡲࡓ⮬ື㌴࣭ྠ㝃ᒓရ࡛ࡣ୰ሀ ᴗࡀࢯࣇࢺ࢙࢘ศ㔝ࡢ◊✲㛤Ⓨࢆᢸࡗ࡚࠸ࡿ࠸࠺≉ᚩࡀ࠶ࡿࠋ ղ ྛᴗ✀ࡢ IT ศ㔝ࡢከゅሗ㏻ಙᴗࡢศ㔝ࡢከゅ ྛᴗ✀ࡽ IT ศ㔝ࡢ◊✲㛤Ⓨᢞ㈨ࡣ㸪㟁Ꮚ㸪㟁Ẽ㸪ᶵᲔ⣔ࡸ⮬ື㌴࡞ࢯࣇࢺ࢙࢘ࡢ㧗ᗘࡀ ồࡵࡽࢀࡿᴗ✀ࡽᕧ㢠ࡢᢞ㈨ࡀ⥅⥆ࡋ࡚࠸ࡿࠋ୍᪉㸪⣲ᮦ⣔ᴗ✀ࡢ IT ศ㔝ࡢᢞ㈨ࡣᴗ✀ࡼࡗ࡚ ᑐᛂࡀࡁࡃศࢀ࡚࠸ࡿࠋ㏫ሗ㏻ಙᴗࡽ་⸆ရࡸ⮬ື㌴ࡢ◊✲㛤Ⓨᢞ㈨ࡣⓙ↓㏆࠸ࠋࡇࢀ ࡣ᪥ᮏࡢIT ᴗ࠾࠸࡚ࡣ་⸆ရࡸ⮬ື㌴⮬యࢆ◊✲㛤Ⓨࡍࡿືࡁࡀ࡞࠸ࡇࢆ⾲ࡋ࡚࠸ࡿࠋ ճ ◊✲㛤Ⓨᢞ㈨ࡢከゅᗘ◊✲㛤Ⓨ㛵㐃ᣦᶆࡢ㛵ಀ ከゅᗘ◊✲㛤Ⓨᙉᗘ㸪◊✲⪅ẚ⋡ࡢ㛫ࡣ㸪ࡢᴗつᶍ࠾࠸࡚ࡶ┦㛵ࡀぢฟࡏ࡞࠸ࠋࡇࡢࡇ ࡽ3 ᣦᶆࡢ┦㛵ಀࡣ㸪ಶูᴗ✀ࡢ⨨ࢀࡓ⤒Ⴀ⎔ቃࡸᢏ⾡ⓗ≉ᛶࡼࡾᐃࡲࡿ㒊ศࡀከ࠸᥎ᐹ ࡉࢀࡿࠋ୍᪉㸪◊✲㛤Ⓨᙉᗘ◊✲⪅ẚ⋡ࡣᴗ✀ࢆၥࢃࡎᙉ࠸ṇࡢ┦㛵ࡀ࠶ࡿࠋ◊✲㛤Ⓨᙉᗘࡢୖ᪼ ࡣ◊✲⪅ࡢቑဨࢆక࠺ࡶࡢ࠸࠼ࡿࠋ մ ◊✲㛤Ⓨᢞ㈨ከゅࡼࡿᴗ✀㛫ᴗつᶍ㛫ࡢᢏ⾡ⓗ㏆᥋ᛶ ༳ๅᴗ㸪㟁Ꮚ㒊ရ࣭ሗ㏻ಙᶵᲔ㸪ሗ㏻ಙᴗࡣᢏ⾡ⓗ᥋㏆ࡋ◊✲㛤Ⓨࡀྠࡌ᪉ྥ㐍ࢇ࡛࠸ࡿࠋ ࡉࡽ㠀㕲㔠ᒓࡢᴗࡶࡇࡢ3 ᴗ✀᥋㏆ࡋࡘࡘ࠶ࡿࠋᢏ⾡ⓗ᥋㏆ࡋࡓᴗ✀㛫࡛ࡣ㸪ࡑࡢᢏ⾡ࢆయ ࡋࡓ〇ရࡸࢧ࣮ࣅࢫࡶ㢮ఝࡋ࡚ࡃࡿྍ⬟ᛶࡀ㧗࠸ࠋࡑࡢሙྜ㸪୧ᴗ✀ࡢᴗࡗ࡚ᕷሙ࡛ࡢ➇ྜࡀ ㉳ࡇࡾᚓࡿࡀ㸪ྠᢏ⾡⼥ྜࡸᢏ⾡ࣛࣥࢫࡢᶵࡶቑ࠼ࡿࡇࡀணࡉࢀࡿࠋ 㸳㸬⤊ࢃࡾ ᮏ✏࡛ࡣ᪥ᮏࡢ〇㐀ᴗ24 ᴗ✀㸪࠾ࡼࡧሗ㏻ಙᴗࢆྵࡴࢧ࣮ࣅࢫᴗ 2 ᴗ✀㛵ࡋ㸪◊✲㛤Ⓨᢞ㈨ ࡢከゅᗘᢏ⾡ⓗ㏆᥋ᛶ㸪◊✲㛤Ⓨ㛵㐃ᣦᶆࡢ㛵ಀࢆ᪥ᮏᶆ‽⏘ᴗศ㢮ࡢ୰ศ㢮┦ᙜࡍࡿᴗ✀ࣞ࣋ ࣝ࠾࠸࡚ᴗつᶍูศᯒࡋࡓࠋᚋࡣᮏ✏ࡢ◊✲ࢆᣑᙇࡋ㸪ྛᴗ✀ࢆᑠศ㢮࡛ࣞ࣋ࣝᴗつᶍู ศᯒࡋࡓ࠸ࠋࡑࢀࡼࡾ࠼ࡤ㸪་⒪⏝ᶵᲔჾල࣭་⒪⏝ရ〇㐀ᴗࡸ㟁Ꮚᛂ⏝⨨〇㐀ᴗ࡞ಶูᴗ✀ ࠾ࡅࡿ◊✲㛤Ⓨከゅࡢヲ⣽࡞≉ᚩࡸᡓ␎ࢆゎ᫂ࡍࡿࡇᐤ࡛ࡁࡿࠋ ཧ⪃ᩥ⊩
[1] Kodama, F.㸦1986㸧͆Technological Diversification of Japanese Industry,͇Science, Vol.233, pp.291-296㸬
[2] Gemba, K. and F. Kodama㸦2001㸧͆Diversification Dynamics of the Japanese Industry,͇Research Policy, Vol.30, No.8, pp.1165-1184㸬
[3] ᒣཱྀᬛᘯ㸦2009㸧ࠕ◊✲㛤Ⓨᢞ㈨ࡢከゅ┈ᛶࠖࠗ◊✲ ᢏ⾡ ィ⏬࠘➨ 24 ᕳ➨ 1 ྕ, pp.89-100㸬 [4] ᐑ⃝ಇ᠇㸦2017㸧ࠕ◊✲㛤Ⓨᢞ㈨ࡢከゅᢏ⾡ⓗ㏆᥋ᛶࠖࠗᮾிᡂᚨᏛ⤒ႠᏛ㒊 ⤒Ⴀㄽ㞟࠘➨ 6
ྕ, pp1-23㸬https://www.tsu.ac.jp/Portals/0/site-img/keiei/2016/ᐑ⃝.pdf
[5] ᐑ⃝ಇ᠇㸦2019㸧ࠕ➨ 1 ❶➨ 3 ⠇ ◊✲㛤Ⓨᢞ㈨ࡢᴗ✀ูከゅືྥ㏆᥋ᛶࡢศᯒࠖࠗ◊✲㛤Ⓨࢸ ࣮࣐ࡢᴗᛶホ౯㈨※㓄ศࡢỴࡵ᪉࠘, ᢏ⾡ሗ༠, pp.21-38㸬
[6] Jacquemin, A. P. and C. H. Berry㸦1979㸧͆Entropy Measure of Diversification and Corporate Growth,͇The Journal of Industrial Economics, Vol.27, No.4, pp.359-369㸬
[7] Jaffe, A. B.㸦1986㸧͆Technological Opportunity and Spillovers of R&D : Evidence from Firms' Patents, Profits, and Market Value,͇The American Economic Review, Vol.76, No.5, pp.984-1001㸬 [8] Garcia-Vega, M.㸦2006㸧͆Does Technological Diversification Promote Innovation? : An Empirical
