地図のインフラとしての地図タイルとは @OSC2020 Online/Spring

by Taro Matsuzawa aka. btm

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5BSP.BUTV[BXB λΠϧࡾܑఋ 04(FP+104.'+KVT(FPSFQVCMJD !TNFMMNBO ஍ਤͷΠϯϑϥͱͯ͠ͷ஍ਤλΠ ϧͱ͸ 04$0OMJOF4QSJOH

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ࣗݾ঺հ

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ࣗݾ঺հ w (FPSFQVCMJD+BQBOγχΞσϕϩούʔ w 04(FP+1ཧࣄ w 0QFO4USFFU.BQ'PVOEBUJPO+BQBOϝϯόʔ w ೔ຊ6/*9Ϣʔβձཧࣄ w λΠϧࡾܑఋ w ϒϨΠΫίΞΫϥελ

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λΠϧ։ൃ w ࠃ౔஍ཧӃͷ஍ٿ஍ਤϓϩδΣΫτͷλΠϧ࡞੒ w ๭์ૹہͷ஍ਤλΠϧ࡞੒ w Ӻ͢ͺ͋ͱ࿏ઢਤ w ਆށࢢ͋͠ΘͤͷଜʮͩΕͰ΋φϏʯ w 0QFO4USFFU.BQ'PVOEBUJPO+BQBOλΠϧαʔόߏங w +*$"ߨࢣ ʙ ʮ஍ཧۭؒ৘ใͷ8FCఏڙٕज़ʯ

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Ӻ͢ͺ͋ͱ࿏ઢਤ ήʔϜϚοϓͱ͍͏ ࢓૊ΈΛ࠾༻

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ͩΕͰ΋φϏ ਆށࢢͷϢχόʔαϧσβΠ ϯʹ४ڌͨ͠৭ऑͷਓʹ΋ݟ ΍͍͢஍ਤ ԰֎͸0QFO4USFFU.BQΛར ༻ͨ͠஍ਤ ԰಺͸47(Λ࡞੒ͯ͠ੜ੒͠ ͨήʔϜϚοϓ

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+*$"ߨࢣ ஍ཧۭؒ৘ใͷ 8FCఏڙٕज़ ࠃ౔஍ཧӃʹͯຖ೥ߨٛΛͯ͠ ͍Δ ߨٛࢿྉ͸͢΂ͯެ։ IUUQTTQFBLFSEFDLDPN TNFMMNBO

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Πϯλʔωοτͷ஍ਤ

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Πϯλʔωοτͷ஍ਤͷछྨ w ը૾ʹରͯ͠NBQλάٴͼBSFBλάΛదԠͨ͠΋ͷ w ը໘ͷεΫϩʔϧʹରԠͯ͠৽͍͠ը૾Λฦ͢΋ͷ w "DUJWF9΍'MBTIΛ࢖ͬͨ΋ͷ w 8FC.BQ4FSWJDF 8.4 ͳͲͷ࢓༷Λ࢖ͬͨ΋ͷ w ͍ͣΕ΋ຖճ৽͍͠ը૾Λฦ͢ඞཁ͕͋Δ w λΠϧԽ͞Εͨը૾σʔλʹΑΔΠϯλϥΫςΟϒͳ஍ਤ

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λΠϧͷྺ࢙ w ೥୅͸NBQλάٴͼBSFBλάΛ࢖͏΋ͷ͕ओྲྀ w ͦΜͳதɺλΠϧͱ͍͏֓೦ࣗମ͸೥ʹ͢Ͱʹ೔ຊͷձ͕࣮ࣾ૷͍ͯͨ͠ w ཌ೥ɺଞͷձ͕ࣾಛڐΛऔΓλΠϧͱ͍͏֓೦͕೔ຊͰ͸࣮࣭࢖͑ͳ͘ͳͬ ͨ w (PPHMF.BQTͷొ৔ʹΑΓ"KBYΛ׆༻ͨ͠ΠϯλϥΫςΟϒͳ஍ਤ͕஀ੜ w λΠϧͱ͍͏֓೦͕Ұؾʹ޿·Δ

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ಛڐʹ͍ͭͯ͸๭͕ࣾXDೖΓ͠ ͨͨΊߦ࢖͕ग़དྷͳ͘ͳͬͨʂʂ

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λΠϧͱ͸Կ͔ʁ

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λΠϧͱ͸Կ͔֓ཁ w Πϯλʔωοτ্Ͱޮ཰Α͘஍ਤΛఏڙ͢Δ࢓૊Έ w ஍ਤը૾͸λΠϧͱ͍͏୯ҐͰ੾ΓऔΒΕ͍ͯΔ w ζʔϜϨϕϧ͸શੈքΛද͢ w ζʔϜϨϕϧ্͕͕Δͱॎԣ͕ഒͷਫ਼౓ʹͳΔ w ΄΅શͯͷλΠϧ͕8FC.FSDBUPS1SPKFDUJPOΛ ར༻͍ͯ͠Δ w ήʔϜϚοϓ͸ྫ֎ http://a.tile.openstreetmap.org/0/0/0.png

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λΠϧͱ͸Կ͔;PPN w ζʔϜϨϕϧ͝ͱʹੈքΛද͢ϑΝΠϧͷ਺͕มΘΔ w ζʔϜϨϕϧϑΝΠϧ w ζʔϜϨϕϧϑΝΠϧ w ζʔϜϨϕϧϑΝΠϧ w ʜ w ζʔϜϨϕϧ Y ϑΝΠϧ

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λΠϧͱ͸Կ͔ϦΫΤετͷྫ w IUUQTBUJMFPQFOTUSFFUNBQPSHQOH w ;PPN 9 : GPSNBU1/( w 9࠲ඪٴͼ:࠲ඪ͸͔Β࢝·Δ

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λΠϧͱ͸Կ͔8FC.FSDBUPS w ๺ҢٴͼೆҢΛΧοτ͍ͯ͠Δ w ࠲ඪܥΛද͢&14(ίʔυͰ͸z&14(zͱఆ ٛ͞Ε͍ͯΔ w ੲ͸z0QFO-BZFSTzͱݴΘΕ͍ͯͨ w (PPHMF

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λΠϧͱ͸Կ͔࢓༷ w λΠϧʹ͸̎ͭͷ༗໊ͳ࣮૷͕͋Δ w 5JMF.BQ4FSWJDF 5.4 w 8FC.BQ5JMF4FSWJDF 8.54 w 5.4͸8.54ΑΓγϯϓϧ w 5.4ͷ9:࠲ඪ͸ࠨԼ͔Β࢝·Δ w ਺ֶͷ࠲ඪܥͱಉ͡ w 8.54ͷ9:࠲ඪ͸ࠨ্͔Β࢝·Δ w ίϯϐϡʔλͷάϥϑΟοΫεͷ࠲ඪͱಉ͡ 5.4 8.54

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λΠϧͱ͸Կ͔:DPPEJOBUFGMJQQFE w 0QFO4USFFU.BQ͸5.4ʹ͍ۙϓϩτίϧΛ௼͍ͬͯΔ͕:͚࣠ͩ͸ࠨ্͔Β ࢝·ΔΑ͏ʹ͍ͯ͠Δ :DPPSEJOBUFqJQQFE ɻ w ϝλσʔλΛແࢹ͢Δͱ:DPPSEJOBUFqJQQFEͳ5.4͸8.54ͱಉ͡ʹͳ Δɻ w ࠃ౔஍ཧӃ΋͜ͷϧʔϧΛ࠾༻ɻ w ଏʹA[YZλΠϧAͱݺͿ w \[^\Y^\Z^QOH

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λΠϧͱ͸Կ͔;9:λΠϧ w λΠϧʹ͓͚ΔʮσϑΝΫτελϯμʔυʯ w 8FC.FSDBUPS w :DPPSEJOBUFqJQQFE5.4 w 3&45"1*ʹΑΔఏڙ w \[^\Y^\Z^\GPSNBU^ w ·ͩʮඪ४࢓༷ʯ͕ͳ͍

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͓·͚ήʔϜϚοϓ w ΋͡Ͳ͓ΓήʔϜͰ࢖͑ΔλΠϧ w [PPNY w ֦େ͢Δͱ୯७ʹίϯϐϡʔλ࠲ඪ͕ഒʹͳ͍ͬͯ͘ w ҏ౾ॾౡ͕ӈʹ͋ͬͨΓɺԭೄ͕ࠨ্ʹ͋ΔΑ͏ͳݱ࣮ͱ͸ҧ͏஍ਤʹ࢖͑ Δɻ w ৄ͘͠͸εϚʔτϑΥϯ൛ʮӺ͢ͺ͋ͱʯΛμ΢ϯϩʔυͯ͠Έ·͠ΐ͏ɻ

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λΠϧҎ֎ͱͷҧ͍

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طଘͷ࢓૊Έ͕޲͍͍ͯͳ͍ཧ༝ w ϦΫΤετ͝ͱʹʮ͜ͷ෦෼Λ͘Εʯͱ͍͏ϦΫΤετ͕૸Δ w ϦΫΤετ͝ͱʹ஍ਤը૾Λੜ੒͢Δඞཁ͕͋Δ w ʮ͜ͷ෦෼ʯ͕ݻఆ͔͞Εͳ͍ͷͰΩϟογϡ͢Δ͜ͱ͕ࠔ೉ w αʔό͕ಈతͰ͋Δඞཁ͕͋Δ w ੩తͳ8FCαʔό͕࢖͑ͳ͍

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λΠϧͰ͸ͳ͍΋ͷ &43*4IBQFpMF RVFSZ 8.4ͳͲ ը૾ RVFSZʹΑͬͯ ը૾͕Ωϟογϡͮ͠Β͍

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λΠϧ ੩తʹ࡞ͬͨྫ 3&45 (&5 ը૾ ετϨʔδ

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λΠϧͷΑ͍ͱ͜Ζ w ୯७ͳ(&5ϦΫΤετͳͷͰΩϟογϡ͠΍͍͢ w ಈతͳαʔόͰ΋தؒͰΩϟογϡ͕Մೳ w ઌʹ࡞੒͓ͯ͘͜͠ͱ͕Մೳ w $%/ͳͲʹࣄલʹ৐͚ͬΔ͜ͱ΋Ͱ͖Δ w ͨͩɺن໛ʹΑΔ

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λΠϧͷछྨ

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λΠϧ΋͍Ζ͍Ζ w ϥελʔλΠϧ w ஍ਤΛදݱͨ͠ը૾ϑΝΠϧ΍ߤۭࣸਅͳͲ w ϝογϡԽ͞ΕͨσʔλΛఏڙ͢Δը૾ϑΝΠϧ w ϕΫλʔλΠϧ w ը૾Ͱ͸ͳ͘σʔλͦͷ΋ͷ͕ೖ͍ͬͯΔ΋ͷ w ϨϯμϦϯά͸ΫϥΠΞϯτͰߦ͏

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ϥελʔλΠϧ

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ϥελʔλΠϧը૾ IUUQTNBQTHTJHPKQYZ[TUEQOH w QYºQYͷը૾σʔλ w ਓ͕ؒ໨ͰݟͯΘ͔Δ΋ͷ w 3FUJOBରԠͷ৔߹ͩͱQYº QY·ͨ͸QYºQYͷ΋ ͷ͕഑৴͞ΕΔ͜ͱ͕͋Δ w !YQOHͱ͍͏ΞΫηεʹͳΔ w ͍ͣΕʹͤΑQY͕ج४

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ϥελʔλΠϧϝογϡσʔλ IUUQTDZCFSKBQBOEBUBHTJHPKQYZ[EFN@QOHQOH w ඪߴͳͲͷϝογϡσʔλͷ஋Λ ৭Ͱදݱͨ͠΋ͷ w ϐΫηϧ୯ҐͰ3(#஋Λؔ਺ʹ௨ ͢͜ͱͰඪߴΛٻΊΔ͜ͱ͕Ͱ͖ Δ w ஍ཧӃ͸ςΩετͰ΋ඪߴΛఏ ڙ͍ͯ͠Δ͕ςΩετʹൺ΂ͯ సૹྔ͕গͳ͍

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ϥελʔλΠϧΫϥΠΞϯτͷॲཧྫ ஍ཧӃ஍ਤࣗ෼Ͱ࡞Δ৭ผඪߴਤ w ϝογϡσʔλͳͲ͸8FCϒ ϥ΢β্Ͱࣗ෼ͳΓʹ৭෼͚ ͢Δ͜ͱ͕Ͱ͖Δ w ݪཧ্ϝογϡҎ֎Ͱ΋Ͱ ͖Δ͕ී௨͸΍Βͳ͍

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σϞ஍ཧӃ஍ਤͰ༡΅͏ IUUQTNBQTHTJHPKQ

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ϫϯϙΠϯτ w ஍ਤΛѻ͏ιϑτ΢ΣΞΛ(*4 (FPHSBQIJD*OGPSNBUJPO4ZTUFN ͱݺͼ· ͢ɻ w 8FCϒϥ΢β্Ͱ஍ਤΛѻ͏αΠτ΋޿ٛͰ͸(*4ͱ෼ྨ͞Ε·͢ɻ w ΫϥΠΞϯτιϑτ΢ΣΞͰ͸044ͷ2(*4΍ɺ঎༻ͷ&43*"SD(*4ͳͲ͕༗ ໊Ͱ͢ɻ w (*4ͱ͍͏ͱͬͪ͜Λࢦ͢ਓ΋ଟ͍ͷͰ஫ҙɻ w ஍ཧӃ஍ਤ΋(*4ͷҰͭɻ

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ϕΫλʔλΠϧ

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ϕΫλʔλΠϧ w จࣈ௨ΓϕΫλʔσʔλΛఏڙ͢ΔλΠϧͰ͢ɻ w λΠϧͷ୯ҐͰϕΫλʔσʔλ͕ೖ͍ͬͯ·͢ɻ w λΠϧʹσʔλίϯςφ w ϕΫλʔσʔλ͸ελΠϧσʔλΛ࣋ͪ·ͤΜɻ w ΫϥΠΞϯτ͕ελΠϧσʔλΛผ్͖࣋ͬͯͯ ϨϯμϦϯά͠·͢ɻ w ϓϩάϥϜͰ੍ޚ͠΍͍͢ͱ͍͏ಛ௃͕͋Γ·͢ɻ

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ϕΫλʔλΠϧͷྫ ϚϧνϦϯΨϧIUUQTPQFONBQUJMFTPSHMBOHVBHFT

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.BQCPY7FDUPS5JMF w .BQCPY͕ࣾఏڙ͢ΔϕΫλʔλΠϧͷ࢓༷ w ݱࡏͷσϑΝΫτελϯμʔυͱࢥͬͯྑ͍ w ࢓༷ w λΠϧ͸1SPUPDPM#V⒎FSGPSNBUΛར༻ w 8FC.FSDBUPS͕લఏ w ϨΠϠʔ΍'FBUVSFT͕ར༻Մೳ

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(PPHMF.BQT΍"QQMF΋7FDUPS ͚ͩͲ࢓༷͕ެ։͞Εͯͳ͍

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ϥελʔλΠϧͱϕΫλʔλΠϧ

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ϥελʔλΠϧͷ࢓૊Έ 0QFO4USFFU.BQͷྫ NPE NBQOJL 4UZMF 9.- 3&45 (&5 ը૾ NBQOJL͕σʔλϕʔεͱελΠϧΛಡΈ ஍ਤը૾ΛϨϯμϦϯά͢Δ

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ϥελʔλΠϧͷ࢓૊Έ 0QFO.BQ5JMFT1PTUTFSWF 1PTUTFSWF 8FCαʔό ελΠϧͳͲ [email protected]ؔ਺ .BQCPY 7FDUPS 5JMF ϨϯμϦϯά͸ ΫϥΠΞϯτͰߦ͏

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ϥελʔλΠϧͷར఺ ϕΫλʔλΠϧͱൺ΂ͨ৔߹ w ը૾͕ͦͷ··ૹΒΕͯ͘ΔͷͰΫϥΠΞϯτ͸ϨϯμϦϯάͷίετ͕͔͔ Βͳ͍ w ௿εϖοΫͳ؀ڥͰ΋ಈ͘ w ϥΠϒϥϦ͕๛෋ w J04"OESPJE͸ඪ४Ͱαϙʔτ͞Ε͍ͯΔ

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ϕΫλʔλΠϧͷར఺ ϥελλΠϧͱൺ΂ͨ৔߹ w σʔλͱελΠϧ͕෼཭͞Ε͍ͯΔͨΊɺࣗ༝ࣗࡏʹ஍ਤͷදݱΛΧελϚΠ ζͰ͖Δɻ w σʔλαΠζ͕σʔλྔʹ४ͣΔͨΊɺϥελʔλΠϧͱൺ΂Δͱσʔλྔ͕ খ͘͞ͳΔέʔε͕ଟ͍ w σʔλྔ͕ଟ͍৔߹Ͱ΋ΦʔόʔζʔϜΛ͢Δ͜ͱͰζʔϜΞοϓͨ͠ͱ͖ ʹసૹྔ͕֨ஈʹݮΔ

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ΦʔόʔζʔϜ w [PPNͰσʔλΛද ͍ࣔͯ͠Δ͕ɺσʔλࣗମ ͸[PPNͷ΋ͷར༻

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ϕΫλʔλΠϧΛϥελλΠϧͱͯ͠ѻ͏ UJMFTFSWFSHM ελΠϧͳͲ 3&45 (&5 ը૾ UJMFTFSWFSHM͕ΫϥΠΞϯτͷ୅ΘΓʹ ϕΫλʔλΠϧͱελΠϧͳͲΛಡΈ ஍ਤը૾ΛϨϯμϦϯά͢Δ .BQCPY 7FDUPS 5JMF

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࠷ۙͷ܏޲ w .BQCPY7FDUPS5JMFΛઌʹ࡞੒ͯ͠ɺσβΠϯΛϕΫλʔλΠϧ্Ͱߦ͍ɺ ͦΕΛϥελʔλΠϧͱͯ͠഑৴͢Δɻ w ঎༻αʔϏεͰ΋͜ͷ࢓૊ΈΛ࠾༻͍ͯ͠Δͱ͜Ζ͕͋Δɻ w σβΠϯΛ͢ΔͨΊͷίετ͕֨ஈʹԼ͕Δɻ

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ϕΫλʔλΠϧͷσβΠϯ .BQCPY(-4UZMF4QFDJpDBUJPO w .BQCPY͕ࣾελΠϧͷ࢓༷Λ࡞੒͍ͯ͠Δ ౰ͨΓલ w .BQCPYࣾࣗମ͸ݱঢ়ͷελΠϧΤσΟλΛ঎༻੡඼ͱͯ͠ఏڙ͍ͯ͠Δ w 044Ͱ࢖͏ʹ͸.BQVUOJLͳͲͷ୅ସΞϓϦέʔγϣϯΛ࢖͏ඞཁ͕͋Δ w ελΠϧࣗମʹؔ਺͕࢖͑ΔͨΊɺߴ౓ͳσβΠϯ͕Մೳ w ͨͩɺؔ਺ࣗମ͸ͦΕͳΓʹ೉қ౓͕ߴ͍ͷͰ஫ҙ

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λΠϧରԠϥΠϒϥϦ

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-FBGMFUKT IUUQTMFBqFUKTDPN w ࠃ౔஍ཧӃͷ஍ཧӃ஍ਤͰ΋࠾༻͞Ε͍ͯΔ஍ਤϥΠϒϥϦ w ϥΠϒϥϦࣗମ͕খ͘͞ɺαϯϓϧ΋ଟ͍ w ஍ਤ࠲ඪͷදݱ͕-BUJUVEF -POHJUJVEFͷฒͼͳΜͰ஫ҙ w ී௨Z࠲ඪ Y࠲ඪͬͯฒͼʹ͸͠ͳ͍ΑͶ w ϥελλΠϧ޲͚ϥΠϒϥϦ͕ͩɺϓϥάΠϯͰ.BQCPY7FDUPS5JMFʹ΋ରԠ w ͱΓ͋͑ͣ࢝ΊΔਓʹ͸Φεεϝ

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0QFO-BZFST IUUQTPQFOMBZFSTPSH w ݹࢀ+BWBTDSJQU஍ਤϥΠϒϥϦ w ͔ͳΓݹ͔͘Β͋Δ͕Ұ࣌ظ։ൃ͕͋·ΓਐΜͰ͍ͳ͔ͬͨɻ w ݱࡏ͸8FC(-ରԠͳͲ͔ͳΓ։ൃ͕׆ൃԽ͍ͯ͠Δɻ w ඪ४Ͱ.BQCPY7FDUPS5JMF΋αϙʔτ͞Ε͍ͯΔɻ w αϯϓϧ͸๛෋͕ͩɺϥΠϒϥϦͱͯ͠͸ͪΐͬͱͰ͔͍ɻ

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.BQCPY(-FDPTZTUFN IUUQTXXXNBQCPYDPNNBQT w .BQCPY(-ࣗମ༷ʑͳ04؀ڥΛαϙʔτ w +BWBTDSJQU 8FCCSPXTFS/PEFKT "OESPJE J04 NBD04 2U 3FBDU /BUJWFFUDʜ w .BQCPY(-+4ࣗମ͸͜ͷҰ෦ͱ͍͏Ґஔ͚ͮͱͳΔɻ w 04؀ڥ͝ͱʹαϙʔτ͞Ε͍ͯΔελΠϧ͕ҧͬͨΓ͢ΔͷͰ஫ҙ͸ඞཁ w +BWBTDSJQU͕͍͍ͩͨҰ൪࠷ॳʹ࣮૷͞ΕΔ

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(PPHMF.BQT IUUQTDMPVEHPPHMFDPNNBQTQMBUGPSN w (PPHMF.BQTࣗମ΋ϥελʔλΠϧΛαϙʔτ͍ͯ͠Δ w ͱ͸͍͑ɺ(PPHMF.BQTͷϥΠϒϥϦΛ࢖ͬͯλΠϧʹΞΫηε͢Δέʔ ε͸ͦΜͳʹແ͍

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.BQ,JUGSBNFXPSL J04 IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPONBQLJU w J04ͷ஍ਤ΋ϥελʔλΠϧΛαϙʔτ͍ͯ͠Δ w ͱ͸͍͑ ҎԼུ

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λΠϧͷྫ

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IUUQTUJMFPQFOTUSFFUNBQKQ ΞΫηεΑΖʂ

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