Showing papers on "Acceptance testing published in 1971"
TL;DR: A stopping rule based on the maximum-likelihood estimate of total costs involved in the decision to continue beyond an early failure is presented, where a Bernoulli model, an exponential model, and a Weibull model are examined.
Abstract: The occurrence of early failures in a fixed-sample acceptance test, where the sample observations are obtained sequentially, presents an interesting decision problem. It may be desirable to abandon the test at an early stage if the conditional probability of passing is small and the testing cost is high. This paper presents a stopping rule based on the maximum-likelihood estimate of total costs involved in the decision to continue beyond an early failure. A Bernoulli model, an exponential model, and a Weibull model are examined.
6 citations
01 May 1971
TL;DR: Some of the practical methods for testing concrete non-destructively are already incorporated in British Standards and Recommendations, and further methods are likely to be added to these very soon as discussed by the authors.
Abstract: Some of the practical methods for testing concrete non-destructively are already incorporated in British Standards and Recommendations, and further methods are likely to be added to these very soon. In order to appreciate the role of non-destructive testing in specifications it is necessary to consider the essential purpose of testing and, in particular, compliance testing. Some non-destructive methods are suitable for checking concrete at various stages of its manufacture and others for assessing the quality of the end product. This article suggests lines of approach for incorporating these methods in future specifications.
5 citations
TL;DR: A number of such aids that have been found useful during the development of the Cambridge Multiple‐Access system are described.
Abstract: Testing and development of elaborate systems requires the assistance of sophisticated techniques and software aids at several stages in the process. These include systems for managing and manipulating the source text, producing and testing new versions in a realistic but ‘safe’ environment and arranging for easy and compatible fall back to a previous version in case of unforeseen difficulties. The paper describes a number of such aids that have been found useful during the development of the Cambridge Multiple-Access system.
2 citations