著者

菅 幹雄 中村 洋一 居城 琢

出版者

法政大学

雑誌

挑戦的研究(萌芽)

巻号頁・発行日

2020-07-30

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経済センサス-活動調査の個票データを用いて全市区町村の産業連関表を推計する。本推計では市区町村別産業小分類別「事業所の売上(収入)金額試算値」の個票データを用いて、全国表の市区町村分割を行う。なお推計においては本社部門と現業部門を分割する。このとき本社活動の範囲は、複数事業所を有する企業の本社で発生している事業活動以外の生産活動(管理活動及び事業活動を補助する活動)とする。さらに全市区町村の産業連関表を社会会計行列(SoclalAccounting Matrlx, SAM)へ拡張する。これにより、市区町村レベルでのEBPM(Eyidence Based PoIlcy Making、事実に基づく政策策定)の実現を目指す。

著者

内田 晴久 吉田 加奈 菅 幹雄

出版者

一般社団法人 水素エネルギー協会

雑誌

水素エネルギーシステム (ISSN:13416995)

巻号頁・発行日

vol.23, no.1, pp.29-34, 1998 (Released:2022-07-21)

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As an example of estimating the environmental impact of hydrogen energy system, we calculated the emission of CO2 at hydrogen production and at transportation through gas pipelines. The emission was estimated using environmental I/O table. The CO2 emission depend strongly on the kind of primary energy. For the energy transportation, less emission was obtained in case of long distance transportation using tubes inadequate diameters than electric power transportation for the same amount of energy.

著者

松橋 隆治 石谷 久 菅 幹雄 吉岡 完治

出版者

一般社団法人 日本エネルギー学会

雑誌

日本エネルギー学会誌 (ISSN:09168753)

巻号頁・発行日

vol.77, no.12, pp.1184-1192, 1998-12-20 (Released:2010-06-28)

参考文献数

5

被引用文献数

1 2

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Life cycle assessment (LCA) is expected to be a useful measure for us to evaluate environmental impacts associated with products or processes, so that we could improve our production systems for sustainable development. For this purpose, we have developed a novel mathematical tool called Process-relational Model. In the model, we have improved the principle of input-output analysis so as to include joint production. This improvement has enabled us to overcome difficulties of LCA in retracing complicated repercussions among production systems and in allocating environmental emissions among multiple products.Then life cycle CO2 emissions of electric and gasoline vehicles have been estimated with this model. We have shown that production and driving of electric vehicles cause less CO2 emissions than those of gasoline vehicles. Our analysis has also indicated that the difference detween electric and gasoline vehicles dramatically changes depending on traffic situation. Namely the difference becomes larger, as average velocity of vehicles becomes lower. Concerning electric vehicles, we have compared CO2 emissions caused by production with those caused by driving. The share of production has increased, as average velocity becomes higher.In conclusion, we have clarified directions of research and development of electric and gasoline vehicles for sustainable energy system.