卒业论文第２回进捗発表「経済的アプローチによるスペースデブリ最适量及び宇宙开発の最适水準の提言」

Dec 4, 20136 likes11,457 views

当论文では経済学的アプローチを用いて宇宙空间でのスペースデブリ最适量と宇宙开発の最适活动水準を算定することを目的としている。宇宙开発が活発化している今日では、スペースデブリは増加の一途をたどり、デブリによる影响が深刻なものとなっている。宇宙开発主体が利润の最大化のためにデブリの存在を无视しながら开発を行うと、デブリによる宇宙空间汚染が拡大し、结果として宇宙空间を利用したことで得られる利益を享受できなくなる。多数者が利用できる共有地が乱用された结果、资源の枯渇を招くことを経済学では“コモンズの悲剧”と呼ぶが、宇宙空间という共有地がデブリによって汚染されることで招く被害はまさしくコモンズの悲剧である。しかし现実的には、デブリが増加し続けることはなく、宇宙开発が停止されることもない。何故ならば、デブリ増加に伴う被害が拡大しすぎるあまりデブリ除去费用の方が安くなった场合、デブリ低减活动はビジネス化するため、デブリはある水準を超えることはないからだ。しかし问题となるのは、デブリによる被害は市场を介さずに直接他の経済主体に与える不利益であるため、市场においては适切に评価されないことである。これはデブリが过剰に生まれると同时に过剰な宇宙开発が行われることを意味する。そこで市场原理を活用し、被害额を市场に组み込みことで（外部不経済の内部化）、宇宙空间においてのデブリ最适量を把握し、过剰な宇宙开発を适切な水準に抑えることができる。

卒业论文第２回进捗発表「経済的アプローチによるスペースデブリ最适量及び宇宙开発の最适水準の提言」

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