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Abstract Problems concerning the date and time representation in databases are well studied in scientific literature. Temporal databases are required in many applications including the conventional applications of DBMSs such as financial systems. However, commercial systems and standards for the query language do not support temporal data features. A simple and efficient approach for implementing temporal capabilities over conventional commercial DBMSs is proposed and various aspects of its practical applications are described. [ABSTRACT FROM AUTHOR]

Abstract  A method of calculating the deviations of the shape relative to the median cylinder for a uniform and nonuniform arrangement of monitored points along the perimeters of monitored sections is considered and an example of the use of the algorithm is presented. [ABSTRACT FROM AUTHOR]

Abstract  A method of measuring the deviations of the shape of large shells of revolution that makes it possible to control the shape of the shell on all stages of manufacturing, repair, and use is considered. The method is based on measurements of the variations of the curvature at points situated uniformly or nonuniformly along the perimeter of transverse control sections. [ABSTRACT FROM AUTHOR]

Abstract  A pattern for information system implementation is proposed. The pattern is based on the commonly accepted object-oriented methodologies of design and development oriented toward widely used imperative programming languages. At the same time, this pattern makes it possible to fully use the power of declarative possibilities of the DBMS query language. The presented estimations demonstrate much higher performance of the applications obtained compared to those created by means of commonly accepted techniques. [ABSTRACT FROM AUTHOR]

Abstract  A technique of determining the deviations of shape relative to a circle of least deviations and an example illustrating its practical implementation are presented. [ABSTRACT FROM AUTHOR]

Abstract  A method for monitoring large shells of revolution is substantiated and implemented when the central axis of the shell is inaccessible. A procedure for constructing an optical cylinder with respect to which measurements are performed is described. [ABSTRACT FROM AUTHOR]