Publications

In today's democratic digital society, the relevance of conducting open and objective voting using new information technologies is increasing. Existing solutions to practically used voting systems focus on technical and legal issues, rather than on the application of new information technologies at the voting stage. The article analyzes the problems of modern electoral systems, and based on an analysis of their shortcomings, a method, algorithms and software implementation of a voting system based on blockchain technology applications with a special software implementation of smart contracts, in which the shortcomings of existing systems are eliminated, are proposed.

The article gives a review of existing methods of network-on-chip design based on the approach in which mapping of the characteristic tasks graph is performed on a given regular topology. The networks-on-chip synthesis problem is generally characterized. The analysis and comparison of standard topologies (mesh and torus) with circulant topologies are performed. Advantages and disadvantages of mesh and torus topologies usage, and the effect, achieved by their application to various implementations of networks on chip, are analyzed. Extension of the scope of solutions for standard regular network topologies mesh and torus on the circulant topologies with better characteristics is proposed. This will make it possible to take advantage of the deterministic approach, but with the use of more effective NoC topologies optimized for a particular task.

The mass application of mobile cardiographs already leads to both explosive quantitative growth of the number of patients available for ECG study, registered daily outside the hospital (Big DATA in cardiology), and to the emergence of new qualitative opportunities for the study of long-term oscillatory processes (weeks, months, years) of the dynamics of the individual state of the Cardiovascular system of any patient.

The article demonstrates that new opportunities of long - term continuous monitoring of the Cardiov ascular system state of patients ' mass allow to reveal the regularities (DATA MINING) of Cardiovascular system dynamics, leading to the hypothesis of the existence of an adequate Cardiovascular system model as a distributed nonlinearself - oscillating system of the FPU recurrence model class [1]. The presence of a meaningful mathematical model of Cardiovascular system within the framework of the FPU auto – recurrence [2], as a refinement of the traditional model of studying black box, further allows us to offer new computational methods for ECG analysis and prediction of Cardiovascular system dynamics for a refined diagnosis and evaluation of the effectiveness of the treatment.

Abstract:

This paper reviews modern ways of data preparation, acquisition and processing in projects based on Internet of Things concept. The best arrangements are considered, including strategies and techniques of network interaction, modern methods of computing organizations in projects, ways of showing and visualizing information for better client observation and realization, as well as additional technical solutions potentially applicable to developments based on the concept of the Internet of things. Selection and integration of solutions into a solitary coordinated arrangement of data collection and processing is being carried out, the extent of use and incorporation of the anticipated framework is investigated. Consequences of the experiment results examination based on the National Instruments laboratory equipment are presented.

Computer simulations and experimental investigation for characteristics of the standard analog device – the heterodyne executed on the printed circuit board with replacement insulators from the composite dielectric having controlled dark conductivity have been carried out. Results of simulation showed that increase in conductivity of material of the printed circuit board (PCB) up to 2·10-7 Ω-1 ·m-1 practically does not change operating characteristics of a heterodyne in the range of the frequencies of 9 - 37 MHz. Simulation results are in good agreement with experimental data. Possibility of their effective use in space application devices, which prevents emergence of electrostatic discharges it, has been shown.

Computer model coupled blood pressure dynamics in magisterial and small arteries networks and its stabilizing effect on heart functioning has been suggested. The Fermi-Pasta-Ulam auto recurrence in the description of the electrical activity of the heart has demonstrated the universal role of the FPU recurrence in the study of distributed dynamical systems. The heart electrical dynamics was described by the coupled Van der Pol differential equations with a time lag, linked with two additively coupled nonlinear differential equations circumscribing the blood pressure dynamics in the networks of magisterial and small arteries. The mathematical model developed by Yuen and Lake for description of the deep wave dynamics within the nonlinear Shrodinger (NSE) equation was used for description of the magisterial arterial blood pressure whereas for small arteries blood pressure dynamics was used the approach elaborated by Zabusky and Kruskal within the framework of the Korteveg de Vries (KdV) equation. The arterial blood pressure dynamics was interpreted as coupled FPU recurrences showing a rich variety of resulting FPU spectra, which were referred to different states of Cardio Vascular System. Synchronous registering of the real ECG and Pulse Wave Fourier dynamic images allowed to unify the characteristic Fourier pictures of the heart electrical activity with the hydrodynamic blood parameters developing in the networks of two types of arteries. The computer study of the suggested model and comparison of its results with the real data proved that the ECG Fourier parameters coupled with the Pulse Wave Fourier parameters form the FPU spectra that increase stability of Cardio Vascular System and can be used for diagnostics as well as for evaluation of the therapeutic arrangements results.

Digital control systems are considered, the functioning of which can be represented as a sequence of functions of a finite alphabet. For such systems design debugging by simulation it is necessary to generate the minimal complete, in the sense of a particular criteria, set of tests for applying to the simulated system to verify the correctness of functioning. Digital control systems are simulated on the logic level of the signals they exchange with external environment, including controlled object. As input data for the simulation input interactions are used, comprising both the actual input signals and output exchange control signals. We consider control digital systems the functioning of which can be represented in the form of a sequence of functions from a finite alphabet. For the development of projects of such systems by the modeling method, it is necessary to form a minimum complete, in the sense of a certain criterion, set of test actions for the simulated system to verify the correctness of its functioning. Control digital systems are modeled at the level of the logical signals that they exchange with the external environment, including those with managed objects. Inputs for simulation are input interactions which include both the actual input signals and the output control signals of the exchange. Algorithm of the minimal complete test set generation for design debugging is proposed, the algorithm is based on developer-defined classes of equivalence of input interactions.

Efficiency of the use of geoinformation systems in industry is formed in many respects: in updating and replenishment of the topographic base for the territorial objects of enterprises; Monitoring compliance with the boundaries of allotments and nature protection zones; quality environmental monitoring; complex mapping of geological formations in the system of mineral exploration; in the planning of capital construction and the creation of infrastructure communications. Digital technologies can significantly reduce the production time and reduce its costs, and digital modeling of processes significantly reduces the number of field tests and experiments. The development of new methods of technical and economic audit predetermines the need to create and justify the most common and objective criteria and evaluation indicators at the design stage of satellite equipment. In order to increase the service life of space vehicles, it is proposed to calculate the possible consequences of electrostatic discharges at the design design stage and provide recommendations for reducing their negative impact. In the studies, a new method for calculating interference from electrostatic discharges in the on-board cable network of spacecrafts is considered. The method makes it possible to reduce the complexity of calculating the spreading of currents along the surface of spacecraft by 2-3 orders of magnitude. The method is based on the idea of building macromodels built on the basis of explicit and implicit methods of Euler. The error in the application of the method is 1%, which is quite acceptable at the stage of preliminary design.

At the present, the actual task is using 3D printers for the manufacture of certain objects with a given level of price / quality ratio. In many cases, it is economically feasible to use a low cost 3D printer. Therefore, it is necessary to have models that predict and classify the printing quality of such printers. The work has involved the development and assembly of a low cost 3D printer. For this purpose, the creation of geometric models of the component parts and the printer itself was carried out, and engineering calculations and optimization of the received designs were performed. It has been developed a printer control system. An experiment was conducted to produce cubes with different printing parameters on such printer. Based on regression analysis, linear and logistic regressions were constructed. Linear regression will allow to assess the quality level of the result depending on the printing parameters, and the logistic regression will allow to classify and predict the probability of manufacturing objects with a given quality level. The influence of each of the print parameters on the quality and result of the classification was analyzed. 

Abstract. A three-dimensional artistic fractal tomography method that implements a non-glasses 3D visualization of fractal worlds in layered media is proposed. It is designed for the glasses-free 3D vision of digital art objects and films containing fractal content. Prospects for the development of this method in art galleries and the film industry are considered.

Artificial intelligence technologies are beginning to be actively used in human life, this is facilitated by the appearance and wide dissemination of the Internet of Things (IoT). Autonomous devices are becoming smarter in their way to interact with both a human and themselves. New capacities lead to creation of various systems for integration of smart things into Social Networks of the Internet of Things. One of the relevant trends in artificial intelligence is the technology of recognizing the natural language of a human. New insights in this topic can lead to new means of natural human-machine interaction, in which the machine would learn how to understand human's language, adjusting and interacting in it. One of such tools is voice assistant, which can be integrated into many other intelligent systems. In this paper, the principles of the functioning of voice assistants are described, its main shortcomings and limitations are given. The method of creating a local voice assistant without using cloud services is described, which allows to significantly expand the applicability of such devices in the future.

The paper presents the results of studies on the formation of contact jamming with radio reception based on the study of contact compounds in electronic devices. The operation of the contact of the electronic device design element with known approximation is considered as the passage of a signal corresponding to the intensity of the irradiating electromagnetic field through a series connection of a nonlinear inertialess and linear inertial parametric four-terminal network. 

The article represents outcomes of development of the detection method of a source of contact noises in car structures which occur at wireless communication in motion. The detection method is based on defining the spatial orientation of radiating circuit, as well as on measuring its resonance frequency. Orientation of components of electromagnetic field of transmitter and receiver electric antennas, as well as orientation of components of radiating circuit field have been studied to achieve the purpose. The condition of having the maximal level of contact noises to be radiated by the circuit which is essential for its reliable detection was defined. In order to define equivalent size of radiating circuit a dependence of its resonance frequency as an electric oscillating system from circuit size, material of which components which form radiating circuit are made, from wireless signal carrier frequency has been established. During research the skin effect of current density distribution over the thickness of conducting elements of radiating circuit has been taken into account. The method requires no application of sophisticated apparatus and may be applied in the field. Radio stations installed in vehicles may be used as technical means of radiating circuit detection.

New SOS MOSFET design with the presence of high-resistance undoped silicon of intrinsic conductivity in the channel region near the source was proposed. 0.75 μm SOS MOSFET with the use of an "insertion" makes it possible to obtain the transistor with characteristics corresponding to a transistor with 0.5 μm topological channel length. This allows the factories to produce new competitive products without significant capital expenditures for the modernization of production capacities.

The paper presents the results of research that can be put into the development and research of non-contact rapid method for assessing the quality of the assembly and installation of EM designs. To achieve the objectives, studied the behavior of the mechanical connection of the contact pairs, namely the definition of the contribution of R, L, C parameters contact joints in the modulation level and the spectral composition of the electromagnetic radiation mechanical contact pair. The method is based on the registration and analysis of artificially excited by contact noise when exposed to mechanical vibrations and harmonic electric high frequency signal on structural elements EM. Considered in the field of electromagnetic compatibility (EMC) as an undesirable phenomenon, the formation of contact interference can be used to evaluate the mechanical properties of a wide variety of designs and hardware devices, including the quality of assembly and installation (especially related to the effort of tightening fasteners).

The article presents the results of the Association of MIEM and the National research University " Higher school of Economics"

Quasi-3D model for calculation of radiation leakage currents in modern submicron SOI MOSFET structures is proposed.  Instead of the fully 3D modeling is proposed to solve two tasks: 2D modeling of the traditional MOSFET cross-section and 3D modeling of the side parasitic transistor. The radiation-induced leakage current simulation in the 0.35 μm SOI MOSFET structure with taking account ionizing radiation with a dose of up to 500 krad was simulated. The results of the simulation show that in comparison with the traditional fully 3D modeling, which requires 11 hours of computer time, the computer time for the IdVg characteristic was reduced to 71 minutes (i.e. the computer time decreased by 9 times).

The paper considers programs and devices of augmented reality, examines the general environments and methods of software development and the rationale for their selection. The work describes in detail the operating principle of the software, the pattern recognition algorithm, the UML class diagram, the UML usage diagram, and the architecture of the 3D rendering engine and a description of its operation. An example of practical application of software with pattern recognition is offered. The paper examines the impact of virtual reality on human health, as well as the problem of assimilation of educational material in preschool education. To solve the problem, various algorithms for the program are proposed. Based on the conducted studies, it was decided to create the software for the experiment on the basis of developed algorithms for preschool education. The results of the work can be used for further research in the field of expanded reality, for new developments in this field and improvement of the quality of education.

In operation results of computer simulation of characteristics of the standard analog device - the heterodyne executed on the printed circuit board from the composite dielectric having feeble conductivity are explained. Results of simulation showed that increase in specific bulk conductivity of material of the printed circuit board to 2·10 -7 Ohm -1 -m -1 practically does not change operating characteristics of a heterodyne. The possibility of effective use of the composite poorly carrying out dielectrics in standard radio engineering devices allowing to prevent origin of electrostatic discharges is set.

The task of determining optimal values of duration of the elements of the "Work-Rest" cycle was considered. With such values of work activity mode are rational, and the productivity of an employee is maximal. A simple genetic algorithm was offered to determine values. The stages of realization of the genetic algorithm for determining the rational mode of work and rest were developed. Taking into account that different parameters affect the evolution search in different ways, we studied the effect of the values of the parameters of the developed genetic algorithm on the achievement of the result and the operation of the algorithm.