19) 建築投資の波及効果に関する研究

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タイトル別名
  • 19) ON THE REPERCUSSIONS CAUSED BY BUILDING INVESTMENT
  • 建築投資の波及効果に関する研究
  • ケンチク トウシ ノ ハキュウ コウカ ニ カンスル ケンキュウ

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In this study I analysed building investment by the method of inter-industry relations study. I participated in constructing the 1950 input-output table which was made in cooperation of five ministries and boards. In addition, by classifying the construction sector of the general table into small sectors, I constructed the particular table for construction analysis. The particular table is clssified among 44+38 sectors. Of these sectors, 44 are general industry sectors of which 20 are for main construction materials, and 38 are construction sectors of which 12 are for building, 17 for public works and 9 for other constructions. On this particular table I calculated input coefficiients and inverse matrix. By using these input coefficients and inverse matrix, I showed not only direct but indirect producton, employment and import needs of each industry which result from one-unit increments in building investment by use or structure and in public works by kinds of works. The main results are as follows: 1) It was made clear how much cement, steel, wood, petroleum and other materials are needed for one-unit increments in building investment by use or structure as well as in public works by kinds of works. 2) Of the direct and indirect employment requirements for the same amounts of increments in the following investments, public works require more than builbing by 70%, road more than reinforced concrete house by 30%, and building more than machinery equipments by 25%. 3) Of the direct and indirect import requirements for the same amounts of increments in the following investments, building requires more than public works by 10%, road a little more than reinforced concrete house, and building only one half as much as machinery equipments. 4) The construction investment analysis would constitute a valuable instrument for formulation of an effective demand policy, an employment policy and an import policy, and for analysis of relations batween construction investment and economic structure.

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