情報システムの生産品質に関わる擦合せ度合いの定量化と実事例データによる品質向上への有用性検討

摘要

情報システムの生産品質の向上を目的として,生産工程を擦合せとモジュール化の工程に分類してアーキテクチャを整理した.擦合せの重要性に着目し,擦合せの度合いを定量化する指標として各企業の生産活動への参画度を導入した.実事例の数値データを用いて参画度を計算し,障害件数との相関を調査した.その結果,障害抑制すなわち生産品質向上に有効な参画度として,機能や利便性を決定する工程での顧客企業の参画度,製造工程での元請け企業の参画度を抽出した.抽出したこれらの参画度に着目し,プロジェクト規模の割に障害件数が顕著に多い別の事例を考察した結果,先の事例の平均と異なる傾向を示し,抽出した参画度の有用性が確認できた.%In order to improve the production quality of information systems, we broke down a production process into modularization and integration, and sorted the architecture. Focusing on the importance of integration, we used each company's participation level as the index to quantify the degree of integration. We calculated the participation level using the actual case and investigated the correlation with the number of problems that occurred. As the participation level to attain improved quality and control problems, we extracted the customer company's participation level in the decision process for functions and accessibility, and the prime contractor's participation level in the production process. Focusing on each participation level, we took the case of a peculiar project with an especially large number of problems for its size. As the result, the participation level of the case was different from other average cases, and we established the effectiveness of the participation levels we extracted.