A method for obtaining estimates for the scatter errors of endogenous characteristics in models for calculating the parameters of communication lines for elements of modern high-speed computing devices in the form of multilayer printed circuit boards is presented. The described methodology for taking into account the uncertainty of exogenous parameters of models in ratios for determining the cross-sectional area and spacing of conductors, delay parameters in short and long communication lines, allows to obtain a forecast of providing of signal integrity, providing of optimized matching of electric circuit elements, and observing of technological requirements for physical, mechanical and geometrical parameters of multilayer printed circuit boards. This technique is based on the theory of fuzzy sets and consists in using a modified form of the heuristic principle of generalization in the transition to fuzzy-sets arguments in the analytical calculation relationships for a number of the most important characteristics of communication lines. A number of examples of the application of the described technique is presented.

No abstract

The technique of optical scanning is continuously developing in the direction of creating new and improving existing types of scanners (deflectors), radiation sources, methods of reading, converting and reproducing information. However, the absence of universal scanner, able to satisfy different applications leads to necessity of application of combined scanning, finding the most effective combination of deflectors with complementary characteristics taking into account their limit values. The purpose of this work is an overview of a typical combined of the scanners used in the systems of wide application, analysis of existing experience in the use of combined deflectors. The article discusses the optical schemes of modern combined scanners, which include scanners of different operating principles and design. The analysis of combined devices for various applications is given, which included optical-mechanical, electronic, acoustic-optical, electro-optical scanners, as well as micro-electromechanical (MEMS) systems, expanding the sphere of scanning tools. The consideration was conducted with a wide set of parameters and characteristics, such as speed, resolution, accuracy of the control of the optical beam, the size of the scanned space, etc. Identified features and benefits of the combined scanning for dynamic, precision, spectral, and structural characteristics and functionality, and also are noted difficulty in implementing a combined scanning. Among them are optical harmonization, dynamic, algorithmic and precision matching of scanners integrated into the device.

Devices based on scanners (deflectors, scanning devices) with mutually complementary characteristics can be a solution to control problems of an optical scanning beam in a number of applications. The paper considers optical-mechanical, electronic, acousto-optical, electro-optical, as well as microelectromechanical (MEMS), micro-optical electromechanical (MOEMS) scanners as components of combined scanning devices. The qualitative indicators of composite scanning, including the speed, resolution, control accuracy of the optical beam, the dimensions of the scanned space, etc., are given. Along with the advantages, the difficulties arising in the implementation of combined scanning are noted.

Proposed a method for solving the problem of identifying hidden relationships in hard-to-structure data that have an implicit character is considered using information mining. Proposed decision trees, the effectiveness of which is illustrated by a specific example. The use of OLAP analysis systems on data presented using in the form of a real or virtual hypercube’s information is an effective tool for the effectiveness of the management for medical monitoring