プロトタイピングによる不確実性の低減 / Reducing Uncertainty through Prototyping

by Masato Ohba

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ϓϩτλΠϐϯάʹΑΔ   ໨తෆ࣮֬ੑͷ௿ݮ #@UFDIUBML   .BTBUP0ICB !PICBSZF

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ϓϩτλΠϐϯάΛ௨ͯ͡   ҙࢥܾఆΛਐΊͨࣄྫͷ঺հ

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ϓϩτλΠϐϯάʹΑΔ໨తෆ࣮֬ੑͷ௿ݮ ιϑτ΢ΣΞ։ൃͷෆ࣮֬ੑ άϥϑػೳʹ͓͚Δෆ࣮֬ੑ ϓϩτλΠϓʹΑΔݕূ ·ͱΊ "HFOEB

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ιϑτ΢ΣΞ։ൃͷෆ࣮֬ੑ

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ιϑτ΢ΣΞ։ൃͷෆ࣮֬ੑ ιϑτ΢ΣΞ։ൃʹ͓͚Δͭͷෆ࣮֬ੑ ʰΤϯδχΞϦϯά૊৫࿦΁ͷট଴ʱ ޿໦େ஍ ௨৴ෆ࣮֬ੑ ໨తෆ࣮֬ੑ ํ๏ෆ࣮֬ੑ ϓϩμΫτͷఆٛͨ͠ ੒ޭʹۙͮ͘ ଞਓ͕ظ଴ͨ͠ߦಈΛىͯ͜͠ ੒ՌΛ͋͛Δ֬཰͕ߴ·Δ εέδϡʔϧɺείʔϓʹ   ؔ͢Δ༧ଌՄೳੑ͕ߴ·Δ Ϛʔέοτʹड͚ೖΕΒΕΔ͔ ෼͔Βͳ͍ෆ҆ ίϛϡχέʔγϣϯʹ ·ͭΘΔෆ҆ Ͳ͏࡞Ε͹ྑ͍ͷ͔ ෼͔Βͳ͍ෆ҆ ௿ݮ͢Δ͜ͱͰ ๊͑Δෆ҆ ͜ΕΒΛͲͷΑ͏ʹ௿ݮ͍͔ͤͯ͘͞ʁ͕ΤϯδχΞϦϯά

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ιϑτ΢ΣΞ։ൃͷෆ࣮֬ੑ ௨৴ෆ࣮֬ੑ ໨తෆ࣮֬ੑ ํ๏ෆ࣮֬ੑ Ϛʔέοτʹड͚ೖΕΒΕΔ͔ ෼͔Βͳ͍ෆ҆ ίϛϡχέʔγϣϯʹ ·ͭΘΔෆ҆ Ͳ͏࡞Ε͹ྑ͍ͷ͔ ෼͔Βͳ͍ෆ҆ PO Ϣʔβʔ ΠϯλϏϡʔ ϓϩτλΠϐϯά .71 ϖΞϓϩ εΩϧϚοϓ ΦϯϘʔσΟϯά εΫϥϜ ݟੵ΋Γ ٕज़తεύΠΫ ݫີͳϚωδϝϯτྖҬͷڥք͕͋ΔΘ͚Ͱ͸ͳ͍͕Πϝʔδ ֤छΞΫςΟϏςΟͷՁ஋͸ෆ࣮֬ੑΛ௿ݮͤ͞Δ͜ͱʹ͋Δ ϓϩμΫτ   ϚωδϝϯτྖҬ ΤϯδχΞϦϯά   ϚωδϝϯτྖҬ

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9 ιϑτ΢ΣΞ։ൃͷෆ࣮֬ੑ Ͳ͏ରॲ͢Δʁ ʰ৽ϝϯόʔ͕ଟ͍େܕϓϩδΣΫτͰͷෆ࣮֬ੑͱͷઓ͍ํʱ !PICBSZF   IUUQTCMPHTUVEZTBQVSJKQFOUSZIPXUPEFGFBUVODFSUBJOUZ w ϓϩμΫτ΍ϓϩδΣΫτͷ ಛੑ͔Βಋ͔ΕΔෆ࣮֬ੑΛ ཧղ w ༗ޮͳΞΫγϣϯ࣮ߦ w ৼΓฦΓʹΑΓมԽͷ؍ଌͱ يಓमਖ਼

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άϥϑػೳʹ͓͚Δෆ࣮֬ੑ

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άϥϑػೳʹ͓͚Δෆ࣮֬ੑ άϥϑػೳͷ։ൃͰ௚໘ͨ͠໨తෆ࣮֬ੑ എܠΘ͔͍ͬͯΔ͜ͱ Θ͔͍ͬͯͳ͍͜ͱ w ࢖͍͗͢ͷ൑ఆج४ͱͳΔ໨҆ ஋ͷఆٛͱ͸ʁ w ۩ମతʹͲͷΑ͏ʹػೳཁ݅ʹ མͱ͔͢ʁ w ͲͷΑ͏ͳཁ݅Ͱ͋Ε͹Ϣʔ βʔ՝୊Λղ͘ఆٛʹͳΔ͔ʁ w Ϣʔβʔ՝୊݄தʹ࢖͍͗͢ Ͱ͋Δ͜ͱʹؾ෇͚ͳ͍ w ଧͪखํ਑࢖͍͗͢܏޲Λڭ ͑ͯ͘ΕΔ

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άϥϑػೳʹ͓͚Δෆ࣮֬ੑ w ʮ౰݄ࢧग़ʯ͕Կ೔࣌఺ͰԿԁͰ͋Δ΂͖ Λࣔ͢஋͕ʮ໨҆ʯ w ԿΛ࣮ݱ͍͔ͨ͠ͷཁٻ͸Ұఆݟ͍͑ͯΔ ͕Ռͨͨ͢Ίͷػೳཁ͕݅ະ֬ఆ ࢖͍͗͢ͷ൑ఆج४ͱͳΔ໨҆஋ʹ͍ͭͯ ౰݄ࢧग़ ໨҆ϥΠϯ 🤔ઌ݄ͷ࣮੷ͦͷ··ͳͧΔʁ   ࣮੷ͳ͍ਓ͸ඇදࣔʁ 🤔༧ࢉΛۉ౳ʹϖʔε഑෼͢Δʁ   ༧ࢉ͕ͳ͍ਓ͸Ͳ͏ͳΔʁ

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άϥϑػೳʹ͓͚Δෆ࣮֬ੑ ॳखͱͯ͠ص্ͰͷγϛϡϨʔγϣϯ͕ͨ͠ લ݄ͷࢧग़ϕʔεͰ   ໨҆ϥΠϯΛඳ͘ͱ 🤔࣮σʔλͰඳ͘໨҆ϥΠϯ͸   ΨλΨλͷ֊ஈʹͳͬͯ͠·͍ͦ͏ #ͷϔϏʔϢʔβʔͰ΋   ຖ೔͸ങ͍෺Λ͠ͳ͍ 🤔ΨΠυײͷ͋Δ໨҆ϥΠϯʹ͢Δʹ͸   લ݄ͷࢧग़͕ͳ͍೔΋ຒΊΔ΂͖ʁ ੩తͳ৘ใ͚ͩͰ͸ମݧͷྑ͠ѱ͠Λ൑அͰ͖ͣ   ࣮σʔλͰݕূͯ͠Έͳ͍͜ͱʹ͸ෆ࣮֬

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ϓϩτλΠϓʹΑΔݕূ

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ϓϩτλΠϓʹΑΔݕূ w ղܾࡦಈ͘΋ͷΛͭ͘Ε͹͍͍ w ࣗ෼ͷखʹೃછΜͩπʔϧͰϓϩ τλΠϓΛ࡞ͬͯΈͨ w 3FBDU $PEF4BOECPY w ൒೔Ͱॻ͚Δߦ͙Β͍ͷ ίʔυ ՝୊ಈ͘΋ͷ͕ͳ͍ͱΘ͔Βͳ͍ ೥݄࣌఺ɺ#͸ϞόΠϧΞϓϦͷΈఏڙ

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ϓϩτλΠϓʹΑΔݕূ w ղܾࡦ࣮σʔλͰݟΔ w 3FEBTIʹΫΤϦΛ༻ҙ͠ɺ݁ՌΛϓϩ τλΠϓʹίϐϖ͢Ε͹ಈ͘ঢ়ଶ ՝୊࣮σʔλͰݟͳ͍ͱΘ͔Βͳ͍ 3FEBTIͷWJTVBMJ[BUJPOͰ࣮ݱͰ͖ΔͷͰ͸ʁͱ࠷ॳ͸ࢥ͕ͬͨɺ   ໨҆ϥΠϯͷࢉग़ΞϧΰϦζϜΛ42-Ͱॻ͘ͷ͸ࢸ೉ͷͨΊૣٸʹఘΊͨ ࣾһ͕ຊ൪؀ڥͷࣗ෼ͷ#σʔλͰ   άϥϑΛγϛϡϨʔτͰ͖ΔΑ͏ʹ🎉

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ϓϩτλΠϓʹΑΔݕূ ࣮σʔλ ಈ͘ίʔυ ࿦఺Λݕূ͢ΔࡐྉΛἧ͑Δ͜ͱ͕Ͱ͖ͨ

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ϓϩτλΠϓΛ௨ͯ͡   ͲͷΑ͏ͳҙࢥܾఆ͕Ͱ͖ͨͷ͔ʁ

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ϓϩτλΠϓʹΑΔݕূ ҙࢥܾఆͷྫมಈ͕ͳ͍೔Λฏۉ஋ͰຒΊΔ΂͖Ͱ͸ͳ͍ Ұݟྑͦ͞͏ͳʮຒΊΔʯҊ͸࢖͍͗͢Λݟಀِ͢ӄੑΛੜΉ͜ͱ͕Θ͔ͬͨ   ʮ͓ۚͷ࢖͍͗͢Λ๷͙ʯίϯηϓτʹ൓͢ΔମݧͳͷͰ/( ຒΊͳ͍ ࢖͍͗͢൑ఆͰ͖͍ͯͳ͍ ࢖͍͗͢൑ఆͰ͖͍ͯΔ ຒΊΔ

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9 ϓϩτλΠϓʹΑΔݕূ w ೔෇ͷߟྀ͕ຊ౰ʹେม w άϨΰϦΦྐྵͰ͸ຖ݄ͷ೔਺͕ҟͳΔ w ݄ͷ໨҆දࣔ༻ʹ݄ͷ࣮੷Λࢀর͠Α ͏ͱ͢Δͱɺ ೔͕଍Γͳ͍ w ݄ͷ໨҆දࣔʹ͸݄ͷ೔਺͸ଟ͗͢Δ ༨ஊ࣮σʔλͰݟͨ͜ͱͰΘ͔ͬͨ͜ͱ ຊ൪૬౰σʔλΛோΊͳ͕Β։ൃ͢Δͷ͸େࣄ

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·ͱΊ

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·ͱΊ ·ͱΊ ⌨ ϓϩτλΠϐϯά͸໨తෆ࣮֬ੑΛ௿ݮͤ͞ΔΞϓϩʔνͷͭ 🤝 #։ൃνʔϜͰ͸ΤϯδχΞ͕ϓϩτλΠϐϯάΛ௨ͯ͡   ίϯηϓτʹԊͬͨ࢓༷Λࡦఆ͢Δγʔϯ͕͋Δ ✂ ίʔυΛॻ͍ͯෆ࣮֬ͳ͜ͱΛΘ͔ΔΑ͏ʹ͢Δͷ΋ΤϯδχΞϦϯά   ࠷ޙʹ͸ࣺͯΔίʔυ͕͋ͬͯ΋͍͍🚮

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4NBSU#BOL *OD 4PGUXBSF&OHJOFFS .BTBUP0ICB !PICBSZF !PICBSZF