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è«æ1「FCI-star」ã§ã¯、çµæžã®äºæ³çç£ã®ã£ãããè§£æ¶ããäžç«çãªéèæ å¢ã®ã¬ãã«「FCI*」ãšããæŠå¿µãææ¡・æšèšããŠããŸã。FCI*ã¯r*ãšç°ãªã、ãã¯ãçµæžã®ååãããå®å®çã«åæ ãããšäž»åŒµãããŠããŸã。å®èšŒåæã§ã¯、2008幎éè屿©åŸã«r*ãäœäžããäžæ¹、FCI*ã¯å®å®ããŠããããš、ãŸãéèæ¿çã®æ¥å€æã«ã¯FCIã®ã£ãã(FCIãšFCI*ã®å·®)ããã©ã¯ãŒãã«ããã³ã°ãªåžå Žã®æåŸ ãæã、æ¿çã¹ã¿ã³ã¹ãããæ£ç¢ºã«ç€ºãããšãæããã«ãªããŸãã。
è«æ2「Financial Conditions Targeting」ã§ã¯、éèåžå Žã«ååšãããã€ãºãçµæžæŽ»åãããä¹±ããç¶æ³äžã§、äžå€®éè¡ãFCIãç®æšãšãã(FCIã¿ãŒã²ãã)æ¿çã®æå¹æ§ãçè«çã«åæããŠããŸã。FCIã¿ãŒã²ããã¯、FCIã®å€åæ§ãæå¶ã、çç£ã®ã£ãããå®å®åããããšçµè«ä»ããŠããŸã。ããã¯、æ¿çç®æšãåžå Žã«æç€ºããããšã§、è£å®ååŒè ããã€ãºã«å¯ŸããŠããç©æ¥µçã«è¡åããããä¿ã、åžå Žæ©èœãæ¹åããã「å ççãªã¹ã¯åæžæ©æ§」ãåããããšããŠããŸã。æ¿çéå©ã®ãã©ã¯ãŒãã¬ã€ãã³ã¹ãããFCIã¿ãŒã²ããã®æ¹ãåªããŠããå¯èœæ§ã瀺åãã、U.S.ããŒã¿ãçšããåæã§ã¯、GDPãã€ã³ãã¬ã®å€åæ§ãå€§å¹ ã«åæžã§ããããã³ã·ã£ã«ã瀺ãããŠããŸã。
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ç»å Žäººç©ç޹ä»:æ°åãšæ Œéããé¢ã
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- Ricardo J. Caballero (ãªã«ã«ã・J・ã«ãã¬ã)
(Ricardo J. Caballero, ããªåºèº«、2025幎æç¹ã§66æ³)
ããµãã¥ãŒã»ããå·¥ç§å€§åŠ(MIT)ã®çµæžåŠææ。åœééè、ãã¯ãçµæžåŠ、éèåžå Žãªã©ãå°éãšã、ç¹ã«è¿å¹Žã®ã°ããŒãã«éè屿©åŸã®æµåæ§åé¡ãéèæ©æŠã«é¢ããç ç©¶ã§äžççã«èåãªæš©åšã§ã。MITã®ãŠã§ããµã€ã
è«æ「FCI-star」ããã³「Financial Conditions Targeting」ã®äž»èŠèè ã®äžäºº。 - Tomás E. Caravello (ããã¹・E・ã«ã©ãã)
(Tomás E. Caravello, æå±:MIT、å¹Žéœ¢äžæ)
MITã§ã«ãã¬ãææããšå ±ã«ç ç©¶ãè¡ã£ãŠããçµæžåŠè ã§ã。æ°äžä»£ã®ç ç©¶è ãšããŠ、éèåžå Žãšãã¯ãçµæžã®çžäºäœçšã«é¢ããåæã«è²¢ç®ããŠããŸã。
è«æ「FCI-star」ããã³「Financial Conditions Targeting」ã®èè ã®äžäºº。 - Alp Simsek (ã¢ã«ã・ã·ã ã»ã¯)
(Alp Simsek, æå±:ã€ã§ãŒã«å€§åŠ、å¹Žéœ¢äžæ)
ã€ã§ãŒã«å€§åŠçµæžåŠéšã®ææ。ãã¯ãçµæžåŠ、è³ç£äŸ¡æ Œ、éèã®æ©æŠãªã©ãå°éãšããŠãã、åžå Žã®äžå®å šæ§ãæ å ±ã®é察称æ§ãçµæžã«äžãã圱é¿ã«ã€ããŠç ç©¶ããŠããŸã。ã€ã§ãŒã«å€§åŠã®ãŠã§ããµã€ã
è«æ「FCI-star」ããã³「Financial Conditions Targeting」ã®èè ã®äžäºº。
ãŸã、FCI*æšèšã®åºç€ãšãªã£ãèªç¶å©åç(r*)ã®æšèšææ³ãéçºããç ç©¶è ãšããŠ、以äžã®äºäººãèšåãããŠããŸã。
- Thomas Laubach (ããŒãã¹・ã©ãŠããã)
(Thomas Laubach, ãã€ãåºèº«、2025幎æç¹ã§60æ³)
欧å·äžå€®éè¡(ECB)ã®çµæžåŠè 。ãã€ãŠã¯FRBã§èŠè·ãåã、ãã¯ãçµæžåŠ、éèæ¿ç、èªç¶å©åçãªã©ãå°éãšããŠããŸã。äž»ã«å®åå®¶å¯ãã®ç ç©¶è ãšããŠç¥ãããŠããŸã。
Laubach and Williams (2003) è«æã®å ±èè 。 - John C. Williams (ãžã§ã³・C・ãŠã£ãªã¢ã ãº)
(John C. Williams, ã¢ã¡ãªã«åºèº«、2025幎æç¹ã§63æ³)
ãã¥ãŒãšãŒã¯é£éŠæºåéè¡ç·è£。FRBçäºäŒããµã³ãã©ã³ã·ã¹ã³é£éç·è£ãæŽä»»ãã、FRBã«ãããéèæ¿çã®å®å・ç ç©¶äž¡é¢ã«ãããéèŠäººç©ã§ã。èªç¶å©åçã«é¢ããç ç©¶ã®ãã€ãªãã¢ã®äžäººã§ã。ãã¥ãŒãšãŒã¯é£éã®ãŠã§ããµã€ã
Laubach and Williams (2003) è«æã®å ±èè 。
ãããã®ç ç©¶è ãã¡ã、è€éãªéèåžå Žãšçµæžã®é¢ä¿ãè§£ãæãã、ããè¯ãéèæ¿çã®ããæ¹ãæš¡çŽ¢ããŠããã®ã§ã。
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ãããŠ、ãã®é婿äœãèããäžã§éåžžã«éèŠãªæŠå¿µã「å®è³ªèªç¶å©åç(r*)」ã§ã。ããã¯、çµæžãã€ã³ãã¬ã§ãããã¬ã§ããªã、æ¯æ°ãéç±ãå·ã蟌ã¿ãããŠããªã、ã€ãŸãæœåšåããã«ã«çºæ®ããŠãã「äžç«çãªç¶æ 」ã§å®çŸãããã§ãããå®è³ªçãªé婿°ŽæºãæããŸã。äžå€®éè¡ã¯、ãã®r*ãæèããªãã、çŸåšã®æ¿çéå©ãçµæžã«ãšã£ãŠç·©åçãªã®ã、åŒãç· ãçãªã®ãã倿ããããã§ã。「æ¿çéå©ãr*ããäœããã°ç·©åç、é«ããã°åŒãç· ãç」ãšããã·ã³ãã«ãªèãæ¹ã§ãã。
ãšããã、è¿å¹Ž、ç¹ã«2008幎ã®ã°ããŒãã«éè屿©ä»¥é、ãã®r*ãšããæŠå¿µãéèæ¿çã®çŸ éç€ãšããŠæ©èœãã«ãããªã£ãŠãã、ãšããåé¡ãææãããããã«ãªããŸãã。ãªãã§ãããã?
äžã€ã«ã¯、äžççã«r*ãã®ãã®ã倧ããäœäžããŠããŸã£ããšèããããŠããããã§ã。é«éœ¢åã«ãã貯èéå°、ITåãªã©ã«ããæè³æ©äŒã®æžå°、æ°èåœã®å°é ã«ããäœã³ã¹ã補åã®äŸçµŠå¢ãªã©、æ§ã ãªæ§é çãªèŠå ãææãããŠããŸã。r*ãäœäžãããš、æ¿çéå©ãå°ãäžããã ãã§ã¯çµæžãåºæ¿ããã«ãããªããŸã。
ããã«åé¡ãªã®ã¯、ãã®r*ãæ£ç¢ºã«æšèšããããšãéåžžã«é£ãããšããããšã§ã。Laubach and Williams (2003) ãšããèåãªç ç©¶ããã®æšèšææ³ãæç€ºããŸããã、䜿ãããã¢ãã«ãããŒã¿、æéã«ãã£ãŠæšèšå€ããã¬ãããæ§è³ªãæã£ãŠããŸã。ç¹ã«éèåžå Žã倧ããå€åããã、çµæžæ§é ãå€åãããããå±é¢ã§ã¯、r*ã®æšèšå€ã倧ããå€åã、ä¿¡é Œæ§ãæºãããã¡ã«ãªãã®ã§ã。
ã€ãŸã、äžå€®éè¡ã¯、äžå®å®ã§ããèŠããªãr*ãšããçŸ éç€ã«é Œããªãã、æµ·ã®çãäžã§é²ãã¹ãæ¹åãæ¢ã£ãŠãããããªç¶æ³ã ã£ããšèšãããããããŸãã。ãã®ç¶æ³ãã©ãæç Žããã®ã? æ¬è«æã®èè ãã¡ã¯、å¥ã®èŠç¹ã«ç®ãåããŸãã。ããã、æ¿çéå©ã ãã§ãªã、éèæ å¢å šäœãæãããšããèãæ¹ã§ã。
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- 屿©å¯Ÿå¿èœåã®æ€èšŒ: å°æ¥èµ·ããããæ§ã ãªã¿ã€ãã®çµæž・éè屿©(äŸ:ãã³ãããã¯、ãµã€ããŒæ»æ、æ°åå€åãªã¹ã¯ãªã©)ã«å¯ŸããŠ、FCIããŒã¹ã®åæãFCIã¿ãŒã²ããæ¿çãã©ã®çšåºŠæå¹ãªã®ã、éå»ã®å±æ©ããŒã¿ãã¹ãã¬ã¹ãã¹ãçææ³ãçšããæ€èšŒãäžå¯æ¬ ã§ã。
ãããã®ç ç©¶ããŒãã¯、çµæžåŠã®çè«å®¶ã ãã§ãªã、å®èšŒç ç©¶è 、ãããŠæ¿çåœå±è ãéèåžå Žã®å°éå®¶ãšã®ååããã£ãŠåããŠé²ããã®ã§ã。éèæ¿çã®æªæ¥ã¯、ãããã®å ±åç ç©¶ã«ããã£ãŠãããšèšã£ãŠãéèšã§ã¯ãããŸãã。
åèãªã³ã¯・æšèŠå³æž:ãã£ãšç¥ãããããªããž
ãã®ç ç©¶ããŒããããã«æ·±ãåŠã³ããæ¹ã®ããã«、é¢é£ããè³æãæžç±ãã玹ä»ããŸã。(泚:ãããã®ãªã³ã¯ã¯èª¬æã®ããã§ãã、èšäºã®å€éšãµã€ããžã®èªå°ãæå³ãããã®ã§ã¯ãããŸãã。å®éã«ã¢ã¯ã»ã¹ããéã¯èªå·±è²¬ä»»ã§ãé¡ãããŸã。)
è«æåå ž(èŠæšãžã®ãªã³ã¯):
- Caballero, Ricardo J., Tomás E. Caravello, and Alp Simsek. "FCI-star." NBER Working Paper No. 32150. February 2024. NBER Working Paperãµã€ã
- Caballero, Ricardo J., Tomás E. Caravello, and Alp Simsek. "Financial Conditions Targeting." NBER Working Paper No. 32151. February 2024. NBER Working Paperãµã€ã
- èè ã®äžäºº、Caballeroææã®ãŠã§ããµã€ãã«ããungatedçãžã®ãªã³ã¯(ããã°èšäºã§åç §ããããã®): 該åœããã°èšäº
é¢é£ããå€å žçè«æ(FCI*æšèšã®åºç€):
- Laubach, Thomas and John C. Williams. "Measuring the Natural Rate of Interest." *Review of Economics and Statistics* 85(4), November 2003, pp. 1063-1070.
äž»èŠãªFCIç®åºæ©é¢ã®ãŠã§ããµã€ã:
- Chicago Fed National Financial Conditions Index (NFCI): ã·ã«ãŽé£éNFCI
- Goldman Sachs Financial Conditions Index: (äžè¬å ¬éãããŠããå ¬åŒããŒãžã¯ç¹å®å°é£ã§ãã、éèæ©é¢ã®ã¬ããŒããªã©ã§åç §ãããŸã)
é¢é£ããæ¥æ¬èªã®è§£èª¬è³æ・æžç±:
- æšæºçãªãã¯ãçµæžåŠæç§æž(ãã³ãã¥ãŒ『ãã¯ãçµæžåŠ』、ãã©ã³ã·ã£ãŒã«『ãã¯ãçµæžåŠ』ãªã©)
- æ¥æ¬ã®éèæ¿çã«é¢ããæžç±(岩ç°èŠä¹ ç·『éèæ¿çã®çè«ãšå®é』、çœå·æ¹æ『äžå€®éè¡』ãªã©)
- æ¥æ¬éè¡ã®èª¿æ»è«æãã¬ããŒã (æ¥éã¯ãŒãã³ã°ããŒããŒ、æ¥éã¬ãã¥ãŒãªã©ã§「éèæ å¢」「èªç¶å©åç」ãæ€çŽ¢)
- éèåºã®ã¬ããŒã (éèåºåæã¬ããŒããªã©)
- æ¥æ¬ã®äž»èŠçµæžçŽ・ãã¥ãŒã¹ãµã€ãã®é¢é£è§£èª¬èšäº(「éèæ å¢ææ°」「FCI」「èªç¶å©åç」ãªã©ã§æ€çŽ¢)
ãããã®è³æãéããŠ、FCIãé¢é£ããéèæ¿çè«ãžã®çè§£ãæ·±ããããšãã§ããŸã。
çšèªçŽ¢åŒ(ã¢ã«ãã¡ãããé ):ç¥ã£ããã¶ããããã§å®ç§?
- è£å®ååŒè (Arbitrageurs)
- ç°ãªãåžå Žéã§åãè³ç£ã«äžæçã«äŸ¡æ Œå·®ãçããéã«、å²å®ãªæ¹ãè²·ã£ãŠå²é«ãªæ¹ã売ãããšã§å©çãåŸãããšããåžå Žåå è 。ããããååŒã«ãã£ãŠåžå Žã®äŸ¡æ Œæªã¿ã¯è§£æ¶ããããšèããããŠããã、çŸå®ã«ã¯ãªã¹ã¯ãå¶çŽã«ãã£ãŠååã«æ©èœããªãå Žåããã。æ¬æåç §、æ¬æåç §。
- è³ç£äŸ¡æ Œ (Asset Prices)
- æ ªåŒ、åµåž、äžåç£ãªã©ã®äŸ¡æ Œ。éèæ¿çãåžå Žå¿ç、çµæžç¶æ³ã«ãã£ãŠå€åã、å®¶èšã®å¯ãäŒæ¥ã®è³é調éã«åœ±é¿ãäžãã。æ¬æåç §、æ¬æåç §。
- BP (ããŒã·ã¹ãã€ã³ã)
- äž»ã«éå©ãå©åãã®å€åå¹ ã瀺ãåäœ。1 BPã¯0.01%(1äžåã®1)。100 BPã¯1%ãæå³ãã。æ¬æåç §。
- ã·ã«ãŽé£é (Chicago Fed)
- ã¢ã¡ãªã«åè¡åœã®äžå€®éè¡ã·ã¹ãã ã§ããé£éŠæºåå¶åºŠ(FRB)ãæ§æãã12ã®å°åºé£éŠæºåéè¡ã®äžã€。ç¬èªã®éèæ å¢ææ°(NFCI)ãå ¬è¡šããŠãã。æ¬æåç §、æ¬æåç §。
- æ¡ä»¶ä»ãå€å (Conditional Volatility)
- éå»ã®æ å ±ãç¹å®ã®æ¡ä»¶ã®äžã§ã®、å°æ¥ã®äŸ¡æ Œãææšã®å€å(ãªã¹ã¯)ã®åºŠåã。åãªãéå»ã®å¹³åçãªå€åã§ã¯ãªã、çŸåšã®ç¶æ³ã«äŸåããå€åã®äºæž¬å€ãæã。æ¬æåç §、æ¬æåç §。
- æ¿çåå®ä»®æ³ (Policy Counterfactual)
- éå»ã«å®éã«åãããæ¿çãšã¯ç°ãªãæ¿ç(åå®ä»®æ³)ãåã£ãŠããã、çµæžãã©ããªã£ãŠãããã、çµæžã¢ãã«ãªã©ãçšããŠã·ãã¥ã¬ãŒã·ã§ã³ããåæææ³。æ¿çè©äŸ¡ãå°æ¥ã®æ¿çç«æ¡ã«åœ¹ç«ãŠããã。æ¬æåç §、æ¬æåç §。
- ä¿¡çšã¹ãã¬ãã (Credit Spreads)
- ä¿¡çšãªã¹ã¯ã®é«ãåµåž(äŸ:瀟åµ)ã®å©åããš、ä¿¡çšãªã¹ã¯ãäœããšãããå®å šè³ç£(äŸ:åœåµ)ã®å©åããšã®å·®。ä¿¡çšã¹ãã¬ãããæ¡å€§ãããš、äŒæ¥ãªã©ãè³éãåãã«ãããªã、éèç°å¢ãåŒãç· ãŸã£ããšå€æããã。æ¬æåç §、æ¬æåç §。
- ããã©ã«ãç (Default Rate)
- åµåè (äŒæ¥ãå人ãªã©)ã、åå ¥éã®è¿æžã婿¯ã®æ¯æããå±¥è¡ã§ããªããªã(ããã©ã«ããã)å²å。çµæžç¶æ³ãæªåãããšäžæããåŸåããã。æ¬æåç §。
- ãã¥ãšãã«ãŒã (Duel Masters Card)
- ã¿ã«ã©ãããŒã販売ãããã¬ãŒãã£ã³ã°ã«ãŒãã²ãŒã 「ãã¥ãšã«・ãã¹ã¿ãŒãº」ã®ã«ãŒã。æ¬èšäºã§ã¯、çµæžæŠå¿µãã¢ããŒãã«ããæ¶ç©ºã®ã«ãŒããçæããŠãã。æ¬æåç §。
- å ççãªã¹ã¯åæžæ©æ§ (Endogenous Risk Reduction Mechanism)
- æ¿çèªäœã、åžå Žåå è ã®è¡åãéããŠ、åžå Žã«ååšãããªã¹ã¯(äŸãã°ãã€ãº)ãå ççã«(å€éšããã§ã¯ãªã、ã·ã¹ãã å éšã®çžäºäœçšã«ãã£ãŠ)åæžããä»çµã¿。è«æ2ã§FCIã¿ãŒã²ãããæã€ãšãããæ§è³ª。æ¬æåç §、æ¬æåç §。
- çºæ¿çžå Ž (Exchange Rate)
- ããåœã®é貚ãšå¥ã®åœã®é貚ãšã®äº€ææ¯ç。茞åºå ¥ãåœéçãªè³éç§»åã«åœ±é¿ãäžã、çµæžæŽ»åã«å€§ããé¢ãã。æ¬æåç §、æ¬æåç §。
- éèæ å¢ææ° (FCI: Financial Conditions Index)
- éå©、è³ç£äŸ¡æ Œ(æ ªäŸ¡、äžåç£äŸ¡æ Œ)、ä¿¡çšã¹ãã¬ãã、çºæ¿çžå Žãªã©、è€æ°ã®éèææšãåæããŠç®åºãããææ°。çµæžå šäœã«ãšã£ãŠã®è³é調éã®ãããããéèåžå Žã®æŽ»æ³åºŠã瀺ã。å€ãäœããšç·©åç、é«ããšåŒãç· ãçãšè§£éããã。æ¬æåç §、æ¬æåç §、æ¬æåç §、æ¬æåç §、æ¬æåç §。
- FCIã¹ã¿ãŒ (FCI*)
- è«æ1ã§ææ¡ãããæŠå¿µ。çµæžã®äºæ³çç£ã®ã£ãããè§£æ¶ãã、äžç«çãªéèæ å¢ã®ã¬ãã«。éèåžå Žã®çæçãªå€åã«åœ±é¿ãããããr*ãããå®å®ããŠããå¯èœæ§ã瀺åãããŠãã。æ¬æåç §、æ¬æåç §、æ¬æåç §。
- FCIã¿ãŒã²ãã (Financial Conditions Targeting)
- è«æ2ã§ææ¡ãããéèæ¿çææ³。äžå€®éè¡ãäžæçãªFCIç®æšãåžå Žã«ã¢ããŠã³ã¹ã、æ¿çéå©ãªã©ãæäœããŠå®éã®FCIãç®æšæ°Žæºã«ç¶æããããšããæ¿ç。åžå Žã®ãã€ãºæå¶ãçµæžå®å®åã«å¹æãããå¯èœæ§ã瀺åãããŠãã。æ¬æåç §、æ¬æåç §、æ¬æåç §。
- è²¡æ¿æ¿ç (Fiscal Policy)
- æ¿åºãè¡ãæ³åº(å ¬å ±äºæ¥ãªã©)ãæ³å ¥(çšéãªã©)ã®èª¿æŽã«ããçµæžæ¿ç。éèæ¿çãšäžŠã¶ãã¯ãçµæžæ¿çã®æ±ã®äžã€。æ¬æåç §。
- ãã©ã¯ãŒãã¬ã€ãã³ã¹ (Forward Guidance)
- äžå€®éè¡ãå°æ¥ã®éèæ¿çã®æ¹é(äŸ:æ¿çéå©ã®ç®æšæ°Žæºãæé)ãåžå Žåå è ãäžè¬ã«æç¢ºã«äŒããããš。åžå Žã®æåŸ 圢æã«åããã、æ¿ç广ãé«ããããšããææ³。æ¬æåç §、æ¬æåç §。
- ãã©ã¯ãŒãã«ããã³ã° (Forward-Looking)
- å°æ¥ã®èŠéããæåŸ ã«åºã¥ããŠè¡åããã、äŸ¡æ Œã圢æããããããããš。éèåžå Žã®äŸ¡æ Œ(æ ªäŸ¡ãçºæ¿ãªã©)ã¯、éå»ãçŸåšã®æ å ±ã ãã§ãªã、å°æ¥ã®æåŸ ãç¹ã蟌ãã§å€åããæ§è³ªããã。æ¬æåç §、æ¬æåç §。
- ãŽãŒã«ããã³・ãµãã¯ã¹ (Goldman Sachs)
- ã¢ã¡ãªã«åè¡åœã®ä»£è¡šçãªæè³éè¡、éèæ©é¢ã®äžã€。ç¬èªã®FCIãç®åº・å ¬è¡šããŠãã、ãã®æ°å€ã¯åžå Žåæãªã©ã§åºãåç §ãããŠãã。æ¬æåç §、æ¬æåç §。
- å€§äžæ³ (Great Recession)
- 2007-2008幎ã«ç±³åœã§å§ãŸã、äžçã«æ³¢åããéè屿©ãšããã«ç¶ãæ¯æ°åŸéã®ããš。ãªãŒãã³・ã·ã§ãã¯ã¯ãã®è±¡åŸŽçãªåºæ¥äº。å€ãã®åœã§å€§èŠæš¡ãªéèç·©åã財æ¿åºåãè¡ããã。æ¬æåç §、æ¬æåç §、æ¬æåç §。
- ã€ã³ãã¬ã¿ãŒã²ãã (Inflation Targeting)
- äžå€®éè¡ã、ç¹å®ã®ã€ã³ãã¬ç(äŸ:2%)ãç®æšãšããŠéèæ¿çãéå¶ããæ çµã¿。å€ãã®å é²åœã®äžå€®éè¡ãæ¡çšããŠãã。æ¬æåç §。
- æ £æ§ (Inertia)
- çµæžæŽ»åãéèåžå Žã®åãã、äžæçãªã·ã§ãã¯ãåããŠãããã«ã¯å ã®ç¶æ ã«æ»ãã、ãã°ãããã®åœ±é¿ãç¶ãæ§è³ª。éèæ¿çã®å¹æãçŸãããŸã§ã«æéããããããš(ã©ã°å¹æ)ãããã«å«ãŸãã。æ¬æåç §。
- æ¿çã¹ã¿ã³ã¹ (Policy Stance)
- äžå€®éè¡ã®éèæ¿çã、çµæžå šäœã«ãšã£ãŠç·©åçãªæ¹åã«åãã£ãŠããã、åŒãç· ãçãªæ¹åã«åãã£ãŠããã、ãããã¯äžç«çããšããå šäœçãªå§¿å¢ãæ¹åæ§。æ¬æåç §。
- ã©ã°å¹æ (Lag Effect)
- éèæ¿çããã®ä»ã®çµæžæ¿çã®å¹æã、æ¿çãå®è¡ããŠããå®éã«çµæžã«åœ±é¿ãçŸãããŸã§ã«æéçãªé ããããããš。FCIã®æ§æèŠçŽ (äŸãã°é·æéå©)ã«ãã©ã°å¹æãææãããŠãã。æ¬æåç §。
- Laubach and Williams (2003)
- Thomas Laubachæ°ãšJohn C. Williamsæ°ã2003幎ã«çºè¡šãã、å®è³ªèªç¶å©åç(r*)ãçµ±èšã¢ãã«ãçšããŠæšèšããææ³ãæç€ºããèåãªè«æ。æ¬è«æã«ãããFCI*ã®æšèšã、ãã®è«æã®ææ³ãæ¡åŒµããŠè¡ãããŠãã。æ¬æåç §、æ¬æåç §。
- ãã¯ãçµæž (Macroeconomy)
- çµæžå šäœã察象ãšããçµæžåŠã®åé。åœã®ç·çç£(GDP)、ç©äŸ¡æ°Žæº(ã€ã³ãã¬)、éçš、æ¯æ°åŸªç°ãªã©ãåæãã。éèæ¿çãè²¡æ¿æ¿çãšãã£ãçµæžæ¿çãæ±ã。æ¬æåç §、æ¬æåç §、æ¬æåç §。
- ãã¯ããã«ãŒãã³ã¹æ¿ç (Macroprudential Policy)
- éèã·ã¹ãã å šäœã®ãªã¹ã¯(ã·ã¹ãããã¯ãªã¹ã¯)ãæå¶ã、éèã·ã¹ãã ã®å®å®æ§ãç¶æããããšãç®çãšããæ¿ç。éè¡ã®èªå·±è³æ¬èŠå¶åŒ·åãäžåç£åãèè³èŠå¶ãªã©ãå«ãŸãã。éèæ¿çãšé£æºããŠéèå®å®åãå³ã。ã·ã¹ãããã¯ãªã¹ã¯ãåç §。æ¬æåç §。
- NBER (National Bureau of Economic Research)
- ç±³åœã«æ¬æ ã眮ã、éå¶å©・éå æŽŸã®çµæžåŠç ç©¶æ©é¢。çµæžåŠã®åéã§äžççã«æš©åšã®ããWorking Paper(ç ç©¶è«æã®éå ±ç)ãªã©ãæ°å€ãçºè¡šããŠãã。æ¬ã¬ããŒãã®å¯Ÿè±¡è«æãNBER Working Paperã·ãªãŒãºãšããŠå ¬è¡šããã。æ¬æåç §。
- ãã€ãº (Noise)
- çµæžã®åºç€çãªç¶æ³(ãã¡ã³ãã¡ã³ã¿ã«ãº)ãšã¯çŽæ¥é¢ä¿ãªã、åžå Žåå è ã®éåççãªè¡åãçæçãªè³éãããŒãªã©ã«ãã£ãŠåŒãèµ·ãããã、åžå ŽäŸ¡æ Œãææšã®äžæçãªæªã¿ãå€å。åžå Žã®éå¹çæ§ã®èŠå ã®äžã€。æ¬æåç §、æ¬æåç §。
- çç£ã®ã£ãã (Output Gap)
- å®éã®çµæžã®çç£æ°Žæº(å®è³ªGDP)ãš、çµæžãæœåšçã«çç£ã§ããã§ãããæ°Žæº(æœåšGDP)ãšã®å·®。å®éã®çç£ãæœåšåãäžåã£ãŠããå Žå(ãã€ãã¹ã®ã®ã£ãã)ã¯äžæ³、äžåã£ãŠããå Žå(ãã©ã¹ã®ã®ã£ãã)ã¯å¥œæ³(ãã ãéç±ã«ããã€ã³ãã¬æžå¿µ)ãšå€æããã。æ¬æåç §、FCI*ãåç §。æ¬æåç §。
- éçç·©å/åŒãç· ã (Quantitative Easing / Tightening)
- äžå€®éè¡ã、æ¿çéå©ã®åŒãäžãäœå°ãå°ããç¶æ³(ãŒãéå©äžéãªã©)ã§、åœåµãªã©ã®è³ç£ã倧éã«è²·ãå ¥ãã(éçç·©å)ãŸãã¯å£²åŽãã(éçåŒãç· ã)ããšã§、åžå Žãžã®è³éäŸçµŠéã«åããã、éèæ å¢ãç·©åãŸãã¯åŒãç· ããããšããæ¿ç。éäŒçµ±çéèæ¿çã®äžã€。éäŒçµ±çéèæ¿çãåç §。æ¬æåç §。
- å®è³ªèªç¶å©åç (r*)
- çµæžãã€ã³ãã¬ã§ãããã¬ã§ããªã、æœåšçç£åã§æé·ããŠããç¶æ (äžç«çãªç¶æ )ã§å®çŸãããã§ãããå®è³ªçãªé婿°Žæº。éèæ¿çãçµæžã«äžãã圱é¿ã倿ããäžã§ã®åºæºãšãããã、æ£ç¢ºãªæšèšãé£ãããšãã課é¡ããã。æ¬æåç §、æ¬æåç §、æ¬æåç §、æ¬æåç §。
- ã·ã§ã㯠(Shock)
- çµæžãéèåžå Žã«äºæããçºçãã倧ããªåºæ¥äº。çµæžæŽ»åãåžå ŽäŸ¡æ Œãå€åãããèŠå ãšãªã。(äŸ:åæ²¹äŸ¡æ Œã·ã§ãã¯、éè屿©ã·ã§ãã¯、ãã³ãããã¯ã·ã§ãã¯ãªã©)æ¬æåç §。
- ã·ã¹ãããã¯ãªã¹ã¯ (Systemic Risk)
- åå¥ã®éèæ©é¢ã®ç Žç¶»ãåžå Žã®æ··ä¹±ã、éèã·ã¹ãã å šäœ、ã²ããŠã¯å®äœçµæžã«ãŸã§é£éçã«æ³¢å・æ¡å€§ãããªã¹ã¯。éèã·ã¹ãã å šäœã®å®å®æ§ã«é¢ããæŠå¿µ。ãã¯ããã«ãŒãã³ã¹æ¿çãåç §。æ¬æåç §。
- ãã€ã©ãŒã«ãŒã« (Taylor Rule)
- ã¹ã¿ã³ãã©ãŒã倧åŠã®ãžã§ã³・ãã€ã©ãŒææãææ¡ãã、äžå€®éè¡ãæ¿çéå©ã決å®ããéã®çµéšåãæé。ã€ã³ãã¬çãšçç£ã®ã£ãã(ãŸãã¯å€±æ¥ç)ã«å¿ããŠæ¿çéå©ã調æŽãã¹ãã ãšèãã。æ¬æåç §。
- éäŒçµ±çéèæ¿ç (Unconventional Monetary Policy)
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1913 | é£éŠæºåå¶åºŠ(FRB)èšç« | ç±³åœã§äžå€®éè¡å¶åºŠã確ç«。éå©ãéèåžå ŽããŒã¿ã®äœç³»çåéãå§ãŸã。 | FCIã®åºç€ãšãªãéèããŒã¿ã®åéäœå¶ãæŽåããå§ãã epoch.[BP] |
1929-1933 | äžçææ | æ ªäŸ¡æŽèœãšéè屿©ãå®äœçµæžã«ç倧ãªåœ±é¿ãäžã、éèã·ã¹ãã ã®è匱æ§ãé²å。 | éèç°å¢ã®ç·åçè©äŸ¡ã®éèŠæ§ãèªèãã、åŸã®FCIã®æŠå¿µçèèœãšãªã。è³ç£äŸ¡æ Œã®å€åã®ç Žå£åãç¥ã。 |
1944 | ãã¬ãã³ãŠããºäœå¶æç« | æŠåŸåœéé貚äœå¶ãšããŠ、åºå®çºæ¿çžå Žå¶(åºè»žé貚ã¯ç±³ãã«)ã確ç«。 | çºæ¿ã¬ãŒããå®å®åã、çµæžå€æ°ãšããŠã®ãã©ãã£ãªãã£ãäœäžããæé。 |
1971 | ãã¬ãã³ãŠããºäœå¶åŽ©å£ | ãã¯ãœã³・ã·ã§ãã¯ã«ããåºå®çºæ¿çžå Žå¶ãçµäº。äž»èŠé貚ãå€åçžå Žå¶ãžç§»è¡。 | çºæ¿ã¬ãŒãã®å€åãFCIã®éèŠãªæ§æèŠçŽ ãšãªã、éèç°å¢ã®äžç¢ºå®æ§ãå¢ã。 |
1973 | ç¬¬äžæ¬¡ãªã€ã«ã·ã§ã㯠| OPECã«ããåæ²¹äŸ¡æ Œã®å€§å¹ åŒãäžã。äžççµæžã¯ã¹ã¿ã°ãã¬ãŒã·ã§ã³ã«èŠãã。 | ç©äŸ¡å€åãšæ¯æ°åæ»ãåæã«çºçã、éèæ¿çéå¶ãè€éå。éèç°å¢ã®å€é¢çãªåæãå¿ èŠã«。 |
1980幎代 | éèèªç±åã®é²å±(ã°ããŒãã«) | ç±³åœ、è±åœ、æ¥æ¬ãªã©ã§éèåžå Žã®èŠå¶ç·©åãé²ã¿、åžå Žåå è ãååŒãå¢å 。 | åµåžåžå Ž、çæéèåžå Žãªã©ãçºéã、FCIãæ§æããããŒã¿ãœãŒã¹ã倿§å。 |
1987 | ãã©ãã¯ãã³ã㌠| 10æ19æ¥ã«ãã¥ãŒãšãŒã¯æ ªåŒåžå Žãå²äžæå€§ã®æŽèœãèšé²。äžçäžã®åžå Žã«æ³¢å。 | éèåžå Žã®çžäºé£é¢æ§ãšæ¥éãªå€åã®å±éºæ§ãåèªèããã。FCIã®ãããªã°ããŒãã«ãªèŠç¹ã§ã®ææšã®å¿ èŠæ§ãé«ãŸã。 |
1990幎代åé | æ¥æ¬ã®ããã«çµæžåŽ©å£ | æ ªäŸ¡・å°äŸ¡ã®æŽèœã«å§ãŸã、éèæ©é¢ã®äžè¯åµæš©åé¡ãæ·±å»å。é·æåæ»ã®åŒãéãšãªã。 | è³ç£äŸ¡æ Œã®å€åãå®äœçµæžã«äžããç倧ãªåœ±é¿ãæ¥æ¬ãçµéš。FCIã®æŠå¿µãæ¥æ¬ã§ããªã¢ãªãã£ãæã€。 |
1990幎代åã° | FCIã®åæçãªæŽ»çšéå§(äž»ã«ç±³åœ) | FRBããŽãŒã«ããã³・ãµãã¯ã¹ãªã©ã、éå©、æ ªäŸ¡、çºæ¿ãªã©ãçµã¿åãããFCIãéèæ¿çåæãåžå ŽåæããŒã«ãšããŠå éšçã«äœ¿çšãå§ãã。 | FCIãæ¿çåæããŒã«ãšããŠãããã¿ã€ãåããå§ããææ。 |
1997-1998 | ã¢ãžã¢éè²šå±æ©、ãã·ã¢è²¡æ¿å±æ©、LTCMç Žç¶» | æ°èåœã§ã®éè²šå±æ©ãš、倧æãããžãã¡ã³ãLTCMã®ç Žç¶»。éèåžå Žã®æ©èœäžå šãåœéçã«æ³¢å。 | ã°ããŒãã«ãªã·ã¹ãããã¯ãªã¹ã¯ãšéèåžå Žã®ã¹ãã¬ã¹ãæž¬ãææšã®å¿ èŠæ§ãé«ãŸã、FCIã®æçšæ§ã確èªããã。 |
1999 | æ¥æ¬éè¡ã®ãŒãé婿¿çå°å ¥ | ããã¬æžå¿µã®é«ãŸããåã、æ¿çéå©ãå®è³ªãŒã%ã«èªå°ããç°äŸã®æ¿çãéå§。 | äŒçµ±çãªé婿äœã«éçãçã、éäŒçµ±çéèæ¿çã、éå©ä»¥å€ã®éèç°å¢ææšãžã®æ³šç®ãå§ãŸã。 |
2000-2001 | ãããã³ã ããã«åŽ©å£ | ã€ã³ã¿ãŒãããé¢é£äŒæ¥ã®æ ªäŸ¡ãæ¥èœ。 | æ ªäŸ¡å€åãéèç°å¢ã«äžãã圱é¿ãé¡èã«。FCIã®æ§æèŠçŽ ãšããŠã®è³ç£äŸ¡æ Œã®éèŠæ§ãæ¹ããŠç€ºã。 |
2003 | Laubach and Williams (2003) è«æçºè¡š | å®è³ªèªç¶å©åç(r*)ã®æšèšææ³ãåŠè¡çã«æç€º。éèæ¿çè«ã«ãããŠr*ãæšæºçãªæŠå¿µãšãªã。 | FCI*ãšããæŠå¿µã、ãã®r*æšèšã®èª²é¡(äžå®å®æ§ãªã©)ããæŽŸçããŠçãŸããæèãšãªã。 |
2008 | ãªãŒãã³・ã·ã§ãã¯、ã°ããŒãã«éè屿© | 米倧ææè³éè¡ãªãŒãã³・ãã©ã¶ãŒãºç Žç¶»ãæ©ã«、äžççãªéè屿©ãçºç。ä¿¡çšåžå Žãåçµã、éèã·ã¹ãã ãæ©èœäžå šã«é¥ã。 | FCIãéèåžå Žã®ã¹ãã¬ã¹åºŠåããæ¿çå¹æãæž¬ãäž»èŠææšãšããŠ、äžå€®éè¡ãåžå Žåå è ã®éã§åºãèªç¥ãã、掻çšãå éãã。 |
2008以é | äž»èŠåœã§ã®å€§èŠæš¡ãªéçç·©åãšãã©ã¯ãŒãã¬ã€ãã³ã¹ | æ¿çéå©ããŒãéå©äžéã«éãããã、FRB、ECB、æ¥éãªã©ãå€§èŠæš¡ãªè³ç£è²·ãå ¥ããå°æ¥ã®æ¿çæ¹éã®æç¢ºåãè¡ã。 | éäŒçµ±çéèæ¿çã®æ³¢å广ãè©äŸ¡ãããã、FCIã®ãããªå æ¬çãªææšã®éèŠæ§ãé«ãŸã。 |
2010幎代 | å®è³ªèªç¶å©åç(r*)ã®æç¶çãªäœäžè°è« | ã°ããŒãã«ãªè²¯èéå°、æè³äžè¶³、çç£æ§äŒžã³æ©ã¿ãªã©ãèæ¯ã«、çµæžåŠè ã®éã§r*ãæ§é çã«äœäžããŠãããšããè°è«ã掻çºå。åæã«、r*æšèšã®äžå®å®ãã課é¡ãšãªã。 | r*ã«ä»£ãã、ãããã¯è£å®ããå®å®çãªäžç«ææšãšããŠ、FCI*ã®ãããªæŠå¿µãç»å Žããåå£ãšãªã。 |
2010幎代åŸå | éèåžå Žã«ããã「ãã€ãº」ã「éèæ©æŠ」ç ç©¶ã®é²å± | åžå Žãå¿ ãããå¹ççã§ã¯ãªãããš、æµåæ§ã·ã§ãã¯ãæè³å®¶ã®è¡åãã€ã¢ã¹ãåžå ŽäŸ¡æ Œã«åœ±é¿ãäžããããšã«é¢ããç ç©¶ãé²ã。 | è«æ2ãæ±ã「ãã€ãº」æŠå¿µã®åŠè¡çãªèæ¯ã圢æããã。 |
2020 | COVID-19ãã³ãããã¯çºç | äžççµæžãæ¥åæ¢ã、éèåžå Žã極ããŠäžå®å®å。ååœãå€§èŠæš¡ãªéèç·©åãšè²¡æ¿åºåã§å¯Ÿå¿。 | FCIãçµæžã®æ¥å€ãšæ¿ç察å¿ã®å¹æã枬ããªã¢ã«ã¿ã€ã ææšãšããŠæ³šç®ããã。 |
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åè«: å°å çµæžãã¹ããã¯ã®çµå¶ç¶æ³ãšãã£ãçŸå ŽæèŠã¯éåžžã«éèŠã§ã。FCIã¯、å šåœãåœéçãªéèæ å¢ãç€ºãææšã§ãã、ãããçŽæ¥å°å ã®ååºè¡ã«ã©ã圱é¿ãããã¯ç¢ºãã«èŠãã«ãããããããŸãã。ããã、ãã®è«æã§åæãããŠããéèæ å¢(FCI)ã®åŒãç· ããç·©åã¯、äŒæ¥ããéãåãããããªãã、å®¶èšãæ¶è²»ã«ãéãåããããšãã£ã、å°å ã®çµæžæŽ»åã«ã鿥çã«åœ±é¿ãäžããŸã。æ¯æ°ãè¯ãããããã«ã¯æ§ã ãªæ¿çãå¿ èŠã§ãã、éèæ¿çãçµæžå šäœãå®å®ãããããšã¯、çµæãšããŠå°å ã®äŒæ¥ããåºã«ãéãåãç°å¢ãäœãããã®åºç€ãšãªããŸã。ãã®ç ç©¶ã¯、æºäžã®ç©ºè«ã§ã¯ãªã、çµæžå šäœãçè§£ããããã®éå ·ã§ãã、ãããå·¡ãå·¡ã£ãŠå°å ã®æ¯æ°ã«ãç¹ããå¯èœæ§ãç§ããŠããã®ã§ã。
5. Reddit (r/Economicsãªã©)
ã³ã¡ã³ãäŸ: "Interesting approach moving beyond r*. The concept of FCI* stability and the role of financial noise in targeting are compelling. How robust is the Laubach-Williams extension for FCI*? And what specific components of noise are they modeling? Could this framework address liquidity spirals?"
åè«: "You raise excellent points regarding model robustness and noise specifics. The paper likely delves into the technical details of the Laubach-Williams extension and the precise modeling of noise in the full version. Regarding liquidity spirals, an unstable FCI driven by noise could certainly be a factor contributing to them. Targeting FCI might help stabilize conditions and enable arbitrage to counteract such spirals, potentially addressing this issue. Further research into the interaction between FCI targeting and financial stability tools would be valuable here."
6. HackerNews
ã³ã¡ã³ãäŸ: "This seems like applying control theory to macroeconomics, using FCI as a state variable. The 'recruiting' arbitrageurs via predictable FCI is an interesting feedback loop. How data-intensive is this model? Can we build real-time FCI indicators and targeting algorithms? What are the computational challenges?"
åè«: "That's a great analogy, viewing it through a control theory lens. The concept of using policy to influence market participants' actions (arbitrageurs) to stabilize the system is indeed a fascinating feedback mechanism. The model likely requires extensive time-series data (1990-2024 used for estimation), which could be computationally intensive for real-time application. Building high-frequency, real-time FCI indicators that capture the diverse components accurately is a significant data engineering challenge. Developing targeting algorithms that are responsive yet avoid inducing excess volatility would also require sophisticated computational methods and robustness testing. This framework certainly opens up avenues for data science and algorithmic policy research."
7. ç®é»åäºé¢šæžè©
ã³ã¡ã³ãäŸ: 「ãŸãã、ãŸãããŠãæ°åã®è¿·å®®ãžèªãåŠè ã®äŒã¿ã。FCIã ã®FCIã¹ã¿ãŒã ã®、æå±ãæŽããããªèããäœæ¥ã。éèãã€ãº?ãã、åžå Žã®çéš、人éã®æµ ãŸããã®ããšã ãã。ãããæ°åŒã§åŸ¡ãããšæãã?ãŸãã§、åµã®æµ·ã«å®èŠãçªãç«ãŠãŠæ³¢ãæ¢ããããšãããããšã。ãã®ç ç©¶ã¯、çŸä»£ã®éè¡åž«ãã¡ã玡ã、çŸãããæ ã«å±éºãªåªæãããŠãã。çµå±、æã ã¯æ°åã®æ³¢éã«ç¿»åŒãããå°èã«ãããã®ã 。」
åè«: ç®é»å çã®ããã«ãªèŠç¹、æ¿ç¥ããããŸãã。確ãã«、çµæžãåžå Žã¯äººéã®ææ ãéåçæ§、ãããŠäºæž¬äžèœãªåºæ¥äºã«æºã¡ãŠãã、åçŽãªæ°åŒã§å®å šã«åŸ¡ããããšã¯ã§ããªãã§ããã。ããã、ãã®ç ç©¶ã¯ãŸãã«ãã®「åžå Žã®çéš」ã「ãã€ãº」ãå®äœçµæžã«äžããæªåœ±é¿ãèªã、ãã®äžã§ããã«ããŠãã®æ³¢ãå°ãã§ãç©ããã«ããã、ãããã¯ãã®æ³¢ã«ä¹ãè¡(è£å®ååŒè ãæŽ»çšãã)ãèŠåºãããšãã詊ã¿ã§ã。åµã®äžã§çŸ éç€ãèªæµ·è¡ãå šãç¡æå³ã§ã¯ãªãããã«、FCIã®ãããªææšããããçšããæ¿çè«ã、å®å šã«æ³¢ãæ¢ããããšã¯ã§ããªããšã、æã ããã®æµ·ãæž¡ãäžã§å°ãã§ãå®å šãªèªè·¯ãèŠã€ããå©ãã«ãªãå¯èœæ§ã¯ãããŸã。å®å šã«è«Šããã®ã§ã¯ãªã、çè§£ã、察åŠããããšãã人éã®ç¥æ§ã®å¶ã¿ãšããŠèŠãããšãã§ããã®ã§ã¯ãªãã§ãããã。
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è«æãšè§£èª¬èšäºã®å 容ãããšã«、髿 ¡çåãã«çè§£ãããã4æã¯ã€ãºãäœæããŸãã。
-
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c) æ¿åºã®åéã®é
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(解説:è«æã¯æ¿çéå©ã ãã§ãªã、éèæ å¢å šäœãéèŠã ãšè¿°ã¹ãŠããŸã。) -
è«æã§ææ¡ãããŠãã「FCI*」ãšã¯、ã©ã®ãããªæŠå¿µã§ãã?
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(解説:è«æ1ã§å®çŸ©ãããŠããŸã。r*ãéå©ã®äžç«æ°Žæºãªã®ã«å¯Ÿã、FCI*ã¯éèç¶æ³å šäœã®äžç«æ°Žæºã§ã。) -
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a) çæçãªæ¿çéå©ã®å€å
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(解説:è«æ1ã®ç¬¬äžã®çºèŠãšããŠæããããŠããŸã。FCIããã©ã¯ãŒãã«ããã³ã°ãªåžå Žãåæ ãããã、ãšèª¬æãããŠããŸã。) -
解説èšäºã«ãããš、ãŽãŒã«ããã³・ãµãã¯ã¹ã®æšèšã§ã¯、æ¥æ¬ã®FCIãåŒãç· ãæ¹åã«100bp(1%pt)äžæããå Žå、å®è³ªGDPã«ã©ã®çšåºŠã®åœ±é¿ããããšãããŠããŸãã?
a) çŽ0.3%ptå¢å
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d) ã»ãšãã©åœ±é¿ãªã
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b) çŽ0.6%ptæžå°
(解説:解説èšäºã®GSæšèšå€ã®è¡šã«èšèŒãããŠããŸã。ç±³åœ・ãŠãŒãåããã¯åœ±é¿ãå°ãããšãããŠããŸã。)
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