Since measurement values contain measurement errors, it is important to control the accuracy of measurement in clinical chemistry inspection. The Japan Medical Association and the Japanese Association of Medical Technologists conducted a survey to help all institutions improve the quality of their accuracy management. In the survey, the samples of the 'same' sera were distributed to participating institutions. However, since sera contain many unstable ingredients, the quality of a few of the samples had changed and their concentrations had deteriorated. At the insitutions that received those deteriorated samples, the quality of the samples was inaccurately evaluated. As a result, those who conducted the survey need to identify which samples had deteriorated and distribute normal samples to the affected institutions.
　In this paper, we made a model that any institution can use to measure the values of the samples they receive, and we proposed a method to detect deteriorated samples by statistical analysis of measurement values in the survey.
　The proposed method makes it possible to detect deteriorated samples and obtain correct data to achieve the purpose of the survey.

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　This paper describes the role which corporate culture plays in creation of corporate value required for the company to grow continuously.
　 Corporate value is evaluated by stakeholders, and the company which has been creating corporate value is defined as "value creating company". The original corporate culture exists in this value creating company, and it is known that its culture influences value creation. However, the relation between corporate culture and corporate value is not clear.
　In this paper, the corporate cultures of 22 value creating companies and their formation processes are investigated, and it is analyzed that the relation between corporate culture and corporate value by using original model which explains that corporate culture influence corporate value through "corporate competence" which is new concept. As a result, six common corporate cultures exist in value creating companies, and it is shown clearly that they have created corporate value.

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