Statistical analysis of the relationship between the number of times that the successful bidders were designated in past and quality of construction works focused on the ‘locality’ of bidders

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  • 落札企業の地域性に着目した被指名実績と工事成績評定との関係に関する統計分析
  • ラクサツ キギョウ ノ チイキセイ ニ チャクモクシタ ヒシメイ ジッセキ ト コウジ セイセキ ヒョウテイ トノ カンケイ ニ カンスル トウケイ ブンセキ

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Various kinds of reformation have been implemented in the field of bids and contract system of public construction in Japan since 1993. Yet those reformations were promoted as a result of political and social pressure caused by collusive bidding at the initiative of government agencies, so that management systems based on performance evaluation on outcomes of those reformations haven't been improved. In this paper, based on the recognition above, Authors did a statistical analysis on the relationship between the performance of public works and various indicators as follows; a. the ratio of contract price to government's engineering cost, b. the competitive states, c. the past performance of the successful bidders, d. the number of times that the successful bidders were designated in past with the data of public works ordered by the Ministry of Land, Infrastructure and Transport Shikoku Regional Development when designated tender had been adopted mainly as public procurement. As a result, the indicator of d (the number of times that the successful bidders were designated in past) is one of important indicators to valuate companies.

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