The conventional definition of reliability (and reliability engineering as discipline) suggests that reliability is a quantifiable performance requirement of a product or system. This means that reliability can be specified, designed for, predicted, measured and demonstrated, using applicable mathematical and statistical models. This paper argues against the futile and erroneous quantification ...

The purpose of this study was to analyze the needs teachers and students on use modules as colloidal teaching materials at SMAN 1 Tembilahan. This type research is descriptive with a qualitative approach. Collecting data using interview sheets questionnaires. subjects were three ten class XII IPA 3 Based results questionnaire given, 100% have used that are in accordance 2013 curriculum. As many...