Frame systems—the ancestors of Description Logics—supported a form of defeasible inheritance and overriding. Such nonmonotonic features disappeared from implementations after the logical reconstruction of frame systems, although applications provide interesting use cases for nonmonotonic inferences. This talk gives an overview of the nonmonotonic DLs introduced so far, and illustrates the many ...

we use many kinds of combinations of raw materials and production levels in producing composite materials. testing all the states are difficult or even impossible. taguchi method is a numerical method which predicts optimum state of composite materials using special orthogonal arrays. in this research we have discussed useablity of this method and its’ potential in finding optimum mix design of...

direct restoration of severely damaged endodontically treated teeth (ett) using available and conventional and current matrix systems is sometimes impractical and in some clinical cases is impossible. the aim of this paper is to introduce and describe a new matrix system based on rigid tray technique (rtt) for dealing with such difficult clinical cases.

Making a conservative bridge using a natural tooth pontic with mobile teeth is complicated, time-consuming and sometimes impossible with the current techniques and materials. The aim of this paper is` to describe a new method using Special Rigid Tray Technique (SRTT) to deal with such difficult clinical cases.

Direct restoration of severely damaged endodontically treated teeth (ETT) using available and conventional and current matrix systems is sometimes impractical and in some clinical cases is impossible. The aim of this paper is to introduce and describe a new matrix system based on Rigid Tray Technique (RTT) for dealing with such difficult clinical cases.