Structure Of Subsystem Research Articles

A Novel Hammerstein Model for Nonlinear Networked Systems Based on an Interval Type-2 Fuzzy Takagi–Sugeno–Kang System

In this article, a novel Hammerstein structure is proposed for nonlinear networked systems based on an interval type-2 Takagi–Sugeno–Kang (IT2TSK) fuzzy system. The proposed approach is designed based on the general Hammerstein form, where an autoregressive moving average and an IT2TSK structures are designed as the linear energetic and nonlinear static components, respectively. The consequents of the nonlinear subsystem are characterized by a TSK-type system while the antecedents are characterized by interval type-2 fuzzy sets. The structure of the nonlinear subsystem is learned online based on the type-2 fuzzy clustering. Two new updating algorithms are introduced based on the Lyapunov theorem for learning the proposed model parameters and adaptive learning rates to assure the model stability and the parameter fast convergence. To illustrate the proposed model robustness, a test is performed under networked environment with time-varying delay and packet losses. The simulation results prove a higher performance for the proposed model than that of compared models.

GEOINFORMATION SUPPORT FOR AUTOMATED TEST PLANNING SUBSYSTEM

The process of testing weapons and military equipment involves numerous manual labor-intensive operations. Such operations can be simplified by fully or partially automating the test planning stages, conducting them directly, and processing the test results. Feature of testing weapons and military equipment is the large amount of data that somehow has a spatial location. One of the modern tools of cartographic representation, processing and analysis of statistical data arrays that have spatial localization, geospatial modeling and situation forecasting is the technology of geoinformation systems.
 The article substantiates the feasibility of using geoinformation systems as part of the weapons testing system and military equipment. The functional scheme of integration of the geoinformation component into the structure of the test automation subsystem is presented for geoinformation support of the processes of testing planning and processing of measurement results. An approach to the creation of geoinformation models of test sites is proposed, based on the use of methods of remote sensing of land and open Web-GIS resources. The list of functional modules of spatial data processing and analysis, which can be applied to the tasks of testing, is distributed in the geoinformation toolkit. Examples of typical spatial tasks that can be performed during test planning, direct testing, processing, and analysis of measurement results, if such data are spatially linked.
 The use of geoinformation technology in the test system will provide an arsenal of qualitatively new methods of digital cartography, such as the technology of automated preparation of cartographic information in the accepted cartographic projections and symbols, mass processing of arrays of measured data, a wide toolkit of mathematical and cartographic methods and functions, features and functions own methods, algorithms and methods of statistical information processing, create and use object-oriented geoinformation data models, operate with a set of visualization tools for the best presentation of research and simulation results.

Economic and legal regulation of the technology subsystem of the National innovation system

Economic and legal regulation of the technology subsystem of the National innovation system

Общие подходы к проектированию подсистемы доступа высокопроизводительных вычислительных систем

Mathematical modeling allows to create a digital model of a product, the so-called digital twin. Such digital twins are quite complex mathematical models, the description of which, as well as the calculation of their parameters and characteristics, is a very serious computational problem that can be solved on high-performance computing systems. However, a building a high-performance supercomputing system designed for solving problems of computer simulation of various physical processes is a difficult time-consuming task. The paper discusses basic approaches to design a login nodes subsystem for such high-performance supercomputing system, allowing to systematize and simplify the process of its development. The analysis of the main factors affecting the structure and composition of the login nodes subsystem is carried out. These factors include the number of potential users of a high-performance computing system; availability of categories of users of the system and their percentage; characteristics of computing tasks solved on the system; hardware platform chosen for building systems. An example of a methodology for calculating of the login nodes subsystem size is given.

Hazard recognition and reliability analysis of CTCS-3 on-board subsystem

This paper presents an investigation of hazard sources identification and reliability sensitivity analysis of CTCS-3 on-board subsystem. Traditional quantitative and qualitative safety and reliability analysis generally used static analysis methods, such as Fault Tree. When device redundancy, dynamic logic and dynamic mechanism are taken into consideration, dynamic analysis methods are preferred, such as Dynamic Fault Tree (DFT). In this paper, the methods of Hazards and Operability (HAZOP), DFT and Monte Carlo Simulation (MCS) are used for quantitative and qualitative analysis. Firstly, to reflect the structure and functions of on-board subsystem, two models (i.e reference model and function hierarchical model) are built. HAZOP is applied to identify hazard sources of on-board subsystem according to above models. Secondly, DFT is put forward within which the top event is CTCS-3 on-board subsystem failure event and the basic events are from results of HAZOP analysis. Then, both MCS and Maximum Likelihood Estimation (MLE) are adopted to estimate the reliability parameters of the CTCS-3 on-board subsystem and components. Reliability sensitivity analysis is observing the variations in components’ reliability parameter contributing to the changes of Mean Time to Failure (MTTF) of CTCS-3 on-board subsystem. Finally, a failure density curve of CTCS-3 on-board subsystem and a table of MTTF sensitivity parameters are presented. According to the sensitivity table, it is knowledgeable for decision makers to take effective measures to improve the reliability of CTCS-3 on-board subsystem.

Значе­ние мониторинга приверженности привив­кам различных групп населения в струк­туре информационной подсистемы эпидемио­логического надзора за вакцино­профилактикой

Значе­ние мониторинга приверженности привив­кам различных групп населения в струк­туре информационной подсистемы эпидемио­логического надзора за вакцино­профилактикой

Synthesis of structure of the onboard passive redundant subsystem with due consideration of the established tolerances

The goal of this article is to select optimal parameters of various structures of the passive redundant subsystems of flying vehicles (hereinafter to be referred to as the “the aircraft”) with due consideration of the established tolerances in respect of decrease in output parameters of these subsystems in the cases of failure of the aircraft components (in accordance with the required failure-free operation). It was demonstrated that synthesis of such structure is based on the solving the two-objective optimisation problem, which can be reduced to the one-criterion problem with the help of various methods. Authors of this article have selected the linear convolution method. Due to the absence of information on quantitative values of the prescribed tolerances and on the required failure-free operation of actual subsystems, authors have performed calculations of relevant dependences within the wide range of the realisable tolerances of the first and second levels. Authors have investigated influence of values of the required failure-free operation and values of tolerances upon the optimal structure of the passive redundancy subsystems of the aircraft.

Development of a control subsystem to stabilize burden materials charging into a furnace

An approach to the development of a control subsystem for the technological process of smelting copper-Nickel raw materials, which allows to stabilize the loading of charge materials into the furnace, is proposed. The structure of the control subsystem is described. The control problem, the control quality criterion, the control object model, control and perturbing effects are considered. Single-circuit and combined variants of subsystems of quality management of products of melting are offered. It is established that the control subsystem stabilizing loading of charge materials in the Vanyukov furnace should be combined: in addition to the feedback loop, it should contain a perturbation compensator on one channel, but as calculations show, the quality improves if all perturbations are compensated.

Microwave spectroscopy of superfluid He II

Experimentally observed with dielectric disc resonator technique the resonant microwave absorption- amplification in superfluid He II below λ-point has been interpreted theoretically as a phenomenon in electrically active dielectric medium with low-energy excitations which exist near the ground state of the He–He interatomic bond due to fine structure of spin subsystem in condensed helium phase. The experimentally registered microwave resonant absorption line with fres = 180.3 GHz at T = 1.4 K and fres = 150.0 GHz at T = 2.1 K is closely related to the standard value of roton gap Δ/kB = 8.64 K (179.36 GHz). The measured temperature dependence of the resonant absorption demonstrates an excellent agreement with the corresponding neutron diffraction data for Δ(T) known from different literature sources. From the common point of view the obtained resonant absorption provides a typical example of the microwave spectroscopy which occurs widely among molecular systems with rotational and vibrational degrees of f...

Force field of tetrafluoroborate anion for molecular dynamics simulation: a new approach

Design of new electrical energy storage devices including supercapacitors as well as an optimization of existing ones require not only new electrolytes, but also the deep and complete understanding of the processes occurring in the electrolyte solutions. Spectral techniques and classical molecular dynamics simulation (MDS) have gained a reputation as a reliable tool for such tasks. The starting point of any MDS is a choice or development of the force fields for all simulated particles. The combination of vibrational spectroscopy and molecular dynamics technique can provide a thorough understanding of the structure and dynamics of the ionic subsystem. In this connection, the reproduction of the vibrational spectra should be added to the requirements for the force fields of the most common electrolyte components. Many modern supercapacitors are based on organic electrolytes consisting of non-aqueous aprotic solvents such as acetonitrile, propylene carbonate and γ-butyrolactone and quaternary ammonium salts with tetrafluoroborate and hexafluorophosphate as anions. The purpose of the current work is to develop a new force field for tetrafluoroborate anion (BF4-) able to reproduce not only translational diffusion in acetonitrile medium, but also the spectral properties of this ion in a condensed phase. Since found in the literature force fields of BF4-, cannot satisfy these requirements, there were performed intensive quantum chemical calculations of BF4- at the M06-2X/6-311++G(d,p) level of theory to construct the potential energy surface with respect to the B-F bonds and F-B-F angles followed by evaluating corresponding intramolecular potential constants. Combining the obtained bond and angle force constants with partial charges on B and F atoms calculated at the same level of theory, and literature values of Lennard-Jones parameters, a new force field model for BF4- anion was created. Based on the carried out MD simulations of the BF4- ion in an infinitely diluted acetonitrile solution, it was proved that the obtained resulting model is capable to reproduce both transport and intra-ion vibrational properties of the tetrafluoroborate anion.

Structure of information security subsystem in the systems of commercial energy resources accounting

IoT (Internet of Things) systems are becoming popular and are widely used in various spheres of life today. However, sometimes the security of such systems leaves much to be desired. This article proposes an approach to the construction of IoT systems protection subsystem with an example of application of the proposed approach to the automated system of commercial energy accounting. A special feature of the approach is the method of choosing the means of protection based on the threat model for the system.

Determine Environmental Structure Condition of River Sub System of Palembang City’s Rivers using Geospatial Analysis

This paper present geospatial analysis to determine the environmental structure of the river sub-system of Palembang City where 70% of the city is located at lowland with elevation from 0 to 5 m above mean sea level. This lowland terrain condition induced problem of water puddle and flood during a rainfall event. A landscape ecological approach and spatial analysis approach of river sub system (RSS) morphometry characteristic were conducted to determine the environmental structure condition of the RSS. The data used to generate the DEM was the height data obtained from the map of the city line on a scale of 1:1000 with stereophotogrammetric digital technique. The line map contains spot height data made every 20 m distance in the field. From this study, new delineation of RSS boundaries was produced and gave different catchment areas. It is found that the perimeter of the RSS and the mean value of bifurcation ratio determined the value of runoff in the RSS.

МЕТОДИЧНА СИСТЕМА ЯК ЗАСІБ ФОРМУВАННЯ ПСИХОЛОГО-ПЕДАГОГІЧНОЇ КОМПЕТЕНТНОСТІ МАЙБУТНІХ ОФІЦЕРІВ ДЕРЖАВНОЇ ПРИКОРДОННОЇ СЛУЖБИ УКРАЇНИ

Nowaday demands the high-level of professional competence of border guard officers, which includes the psychological and pedagogical competence. Formation of psychological and pedagogical competence begins during studying at a departmental institution of higher education and implies the implementation of a methodical system in the educational process that would contribute to the formation and development of the future border guard officer. The urgent issues are the development of a methodical system for the formation of psychological and pedagogical competence of this category of future specialists. The article gives an account of the goals, tasks, structure, stages, content and completeness of each structural subsystem of the author’s methodical system for the formation of psychological and pedagogical competence of future border guard officers. In the article the methodical system is represented as a set of three structural subsystems: target, informative and procedural-organizational. Each subsystem has its constituent elements, hierarchical dependencies, pursues certain goals and contains internal connections. On the basis of the analysis, generalization and systematization of the research material in the article, a graphical interpretation of the developed methodical system is presented. Implementation of the proposed methodical system into the educational process is possible only if a favorable learning environment is created which has high cognitive motivation, creative orientation, qualitative methodical and scientific-methodical preparation of pedagogical workers, implementation of interdisciplinary connections, innovative pedagogical approach based on the application of active teaching methods, a favorable atmosphere for the formation of psychologically and pedagogically important qualities of cadets, improvement of the teacher’s skills, effective targeted influence and pedagogical interaction with cadets, aspiration of future officers-border guards for professional growth and readiness to solve the psychological and pedagogical tasks of future professional activity. The presented methodical system became the central link of the theoretical model of formation of the investigated competence. The next step will be a description of the method of introducing the proposed methodical system into the educational process of the Academy of the State Border Guard Service of Ukraine.

Interaction of Silver Clusters with Cholesterol Ligands

The structures of small silver clusters (Ag2, Ag3, Ag13) and their interaction with ligands of the cholesterol series, namely, cholesterol (Ch) and thiocholesterol (TCh), are calculated by the density functional theory (DFT) methods and the second-order Moller–Plesset perturbation theory (MP2). Trends in the geometric structure and interaction energy of the silver–cholesterol ligand cluster are estimated depending on the size of the metal cluster and the replacement of cholesterol by the sulfur-containing analogue. For Ch–Ag13 and TCh–Ag13 systems, the geometric structure of the metallic subsystem is a slightly distorted icosahedron with the Ag–Ag bond length ranged 2.8–3.0 A. Cholesterol is coordinated to the icosahedral facet so that the shortest Ag–O distances range from 2.3 to 2.4 A. In the case of thiocholesterol, a configuration in which the ligand is coordinated by the edge of the icosahedron with two approximately equal distances of Ag–S (2.537 and 2.547 A) is preferable.

Explicating Ways to Recollect Autobiographical Material During German-Language Biographical Interview

One of the subsystems of memory that is allocated from the bio-psychological and sociological points of view is autobiographical memory characterized by certain functional patterns. Autobiographical practices constitute socialized, culturally determined, materialized form of fixing autobiographical memory which is determined by memory mechanisms, communication laws and regulations. Their analysis allows making certain observations about the structural characteristics of autobiographical memory. Narration within biographical interviews is based on the interaction of the three forces (telling “I”, being told “I” and coordinating their attitude “I”) aimed at harmonizing the structures of life experiences and narrative structures, at the social acceptance of narration. This makes the implementation of the implicit principles of narrative associated with the structural elements of communication (the rules of integrity and completeness, dramatizing, explicitation). The autobiographical material in memory is constituted with “bright”, “important”, “crucial”, “essential” events that correlate with the level structure of the memory subsystem. Revival of each of these types of autobiographical material in the biographical interviews under study is characterized by a certain specificity.

REMOTE SENSING TECHNOLOGIES AND GEOSPATIAL MODELLING HIERARCHY FOR SMART CITY SUPPORT

Abstract. The approach to implementing the remote sensing technologies and geospatial modelling for smart city support is presented. The hierarchical structure and basic components of the smart city information support subsystem are considered. Some of the already available useful practical developments are described. These include city land use planning, urban vegetation analysis, thermal condition forecasting, geohazard detection, flooding risk assessment. Remote sensing data fusion approach for comprehensive geospatial analysis is discussed. Long-term city development forecasting by Forrester – Graham system dynamics model is provided over Kiev urban area.

INFOLOGICAL MONITORING SYSTEM OF ANALYTICAL DATA UNSTRUCTURED CONTENT

In operation the way of solving the problem of quick search of information in unstructured information resources is offered. Four main units realizing information search in semantic values are constructed and described. In article the algorithm of the decision of the task of assessment of compliance of semantic contents of text documents of the given data domain is offered. The offered infologichesky approach is executed on the basis of data analysis of patent search, the published scientific operations and the conducted pilot studies of effective methods of automatic assessment of maintenance of unstructured information resources for the organization of processes of information and analytical support of scientific activities. In operation the method of assessment and comparison of a subject directivity of data in unstructured information resources, on a basis use of infologichesky system is offered. This method assumes carrying out a clustering of text documents by comparing of semantic contents of the researched text and the anthology. The structure of the retrieval subsystem having the service-oriented client-server architecture with the thin client (web observer) is described. The described method was approved on a set of the texts received as a result of monitoring of open public infocommunication Internet resources without restriction of a subject (more than 1 million copies of texts are received and processed). Among the received texts by an expert way learning selection for the following types of texts was created: artistic texts, scientific technical articles, the pseudoscientific texts received as a result of operation of systems, a spam automatically generated - the containing texts. The composition is offered and the general architecture of the software of infologichesky system is described, principal components of system are cross-platform. On the basis of results of the pilot studies the basic possibility of implementation of automated assessment of subject similarity of documents on the example of infologichesky processing of texts of working programs of disciplines is shown, requirements imposed to the program interface of interaction of a prototype with external search engines are created.Key words: infological system, assessment of the thematic similarity, information resource working program of discipline, competence, semantic analysis, meaning.

Frequency identification of Hammerstein-Wiener systems with backlash input nonlinearity

The problem of system identification is addressed for Hammerstein-Wiener systems that involve memory operator of backlash type bordered by straight lines as input nonlinearity. The system identification of this model is investigated by using easily generated excitation signals. Moreover, the prior knowledge of the nonlinearity type, being backlash or backlash-inverse, is not required. The nonlinear dynamics and the unknown structure of the linear subsystem lead to a highly nonlinear identification problem. Presently, the output nonlinearity may be noninvertible and the linear subsystem may be nonparametric. Interestingly, the system nonlinearities are identified first using a piecewise constant signal. In turn, the linear subsystem is identified using a frequency approach.

Features of civil protection implementationin the context of the local self-government reforming in Ukraine

The purpose of the paper is to study theoretical, legislative and normative principles of civil protection implementation in the context of local self-government reforming in Ukraine. Analyzing and generalizing the scientific work of many scholars, implementation of legal acts, the main functions of local self-government bodies in civil protection implementation for the population have been researched. A detailed assessment of the legal and regulatory framework of civil protection for the population has been carried out. Pressing issues in the system of public management for civil protection of the population in territorial communities have been investigated, as well as the main functional powers of local self-government bodies have been determined. Based on results of the study, the structure of the territorial subsystem of the unified state civil defense system, where the superintendent is the head of the united territorial community, has been proposed. The organizational structure of civil defense of the united territorial community, which includes the head of the united territorial community, a structural unit for civil protection, a local fire and rescue unit, voluntary fire brigades, specialized civil protection services, has been developed. The comparative analysis of the ratio of the firefighters' number to the number of population in countries of the world has been carried out. In Ukraine, the number of firefighters taken from the total population amount is 0.10% (compared with 3.96% in Austria, 3.45% in the Czech Republic, 2.81% in Sweden). The estimated need for firefighters in Ukraine is 300,000, which requires recruitment of local fire brigades (extra 1860 teams, 24 thousand people) and the development of the movement for voluntary fire brigades. The vistas for the further research in this field are the analysis, systematization and generalization of information materials for the operation of civil protection systems at the local level in different countries of the world.

THEORETICAL ASPECT OF INTERFACE COMPONENT IDENTIFICATION IN THE SYSTEM OF ECONOMIC SECURITY OF INSTITUTIONS OF HIGHER EDUCATION

In the article the necessity of interface component separation in economic security system of institutions of higher education is grounded. It is offered to separate internal and external systems of economic security in the institution of higher education. External economic security consists of few subsystems, such as environmental, market, territorial, legal and political, and social security. Among internal components of economic security system the subsystems of the first and second level are distinguished. The structure of the first level subsystem – financial security – is offered to include budget (for state institutions), tax subsystems of the second level and the subsystem of financial flows. The structure of property subsystem includes such components, as universities own property, property of personnel, property of students and property of visitors, sponsors and others. Personnel security subsystem is divided into intellectual component, personnel security component and that of security of personnel actions. Information subsystem of the first level consists of interface component and a component of information resources security. In addition to the above, the subsystems of the first level include legal, reputational, technological and physical (power) subsystems. The shortcomings of traditional approach to defining the interface component of economic security are determined. The authors’ approaches to the interpretation of interface security of institutions of higher education are offered.