Abstract The ability of a knowledge-oriented system to learn requires the selection and organization data. article is devoted disclosure stages data preparation for application case-based procedures support decision-making by operator technological process in field oil gas wells drilling. presented concept allows concentrating expert experience subject area satisfies criteria main sources knowl...

A new method for reducing metal artifacts in X-ray computed tomography (CT) images is presented. It bases on the solution of a convex optimization problem with inequality constraints on the sinogram, and total variation regularization for the reconstructed image. The Chambolle-Pock algorithm is used to numerically solve the discretized version of the optimization problem. As proof of concept we...

This paper examines optimization within a relational data base system. It considers the optimization of a single query defined by an expression of the relational algebra. The expression is transformed into an equivalent expression or sequence of expressions that cost less to evaluate. Alternative transformations, and combinations of several transformations, are analyzed. Measurements on an expe...

Among the specific forms of rationality that are to be analyzed with regards to games are the control circuit, the simulation and the data base. As different cultural forms of the computer’s conveyed mediality they represent intermediate elements between the calculating, programmable machine and the cultural grammar of its handling as well as its social implementation, between ‘hard’ technology...

INTRODUCTION Object-oriented (OO) programming languages and OO analysis and design techniques influence data base systems design and development. The inevitable result is the object-oriented data base management system (OODBMS). Many of the established data base vendors are incorporating objectoriented concepts into their products in an effort to facilitate data base design and development in t...