DESIGN OF COMPLEX ENGINEERing systems has increasingly become a collaborative task among teams that are physically, geographically, and temporally separated. The complexity of modern products means that a single designer or design team can no longer manage the complete product development effort. An enterprise that tries to develop products without sufficient expertise in a broad set of discipl...

— The design of a data base schema can be organized through a set of refînement steps, that gradually introducé progressive details in the description of reality. In this approach, suitable restrictions to refînement rules allow to guarantee both conceptual and logical properties. Following this approach the formalism of hypergraphs and hypergraph grammars can be applied to investigate various ...

in this paper we introduce a new scheme of censoring and study it under the weibull distribution. this scheme is a mixture of progressive type ii censoring and self relocating design which was first introduced by srivastava [8]. we show the superiority of this censoring scheme (psrd) relative to the classical schemes with respect to “asymptotic variance”. comparisons are also made with respect ...