On the improvement of computational accuracy during the construction of transportation lines

2018 ◽  
pp. 391-398 ◽  
Author(s):  
Andrey Indeykin ◽  
Olga Kuranova ◽  
Andrey Chernykh ◽  
Georgiy Chanturiya
Keyword(s):  
Information Systems ◽  
Practical Importance ◽  
Drainage Ditches ◽  
Computational Accuracy ◽  
Integral Calculus ◽  
Volume Calculation ◽  
Research Results ◽  
Mathematical Demonstration ◽  
Relative Errors ◽  
The Given

Objective: To obtain analytic dependences for profile cubage volume calculation of subgrades (side hill fills), ditch cuts (side hill cuts), as well as borrow pits, soil banks, drainage ditches and other structures. Methods: Integral calculus and stereometry was applied. Results: New analytic dependencies for profile cubage volume calculation of subgrades (side hill fills), ditch cuts (side hill cuts), borrow pits, soil banks and drainage ditches were deducted. Relative errors of calculating the given profile cubage volume were determined in comparison with conventional methods for calculating the values in question. Mathematical demonstration of the given analytic dependencies, as well as the analysis of the latter was carried out. Practical importance: Computational accuracy of profile cubage volume of subgrades (side hill fills), ditch cuts (side hill cuts), borrow pits, soil banks and drainage ditches may be improved based on the examined dependencies. Research results may be applied in the design of information systems. The latter promptly implement the introduced analytic dependencies of more effective calculation indices and test planning of large earthwork volumes.

On Dependence in Wille’s Contexts

1993 ◽  
Vol 19 (3-4) ◽  
pp. 343-353
Author(s):  
Jiři Novotný ◽  
Miroslav Novotný
Keyword(s):  
Information Systems ◽  
Minimal Subset ◽  
Dependence Space ◽  
The Given

A concept in Wille’s context can be generated starting with a set of features. The problem of finding a minimal subset of the given set of features that generates the same concept as the given one is solved using a suitable dependence space and constructing reducts of one of its subsets. This result can be applied to information systems where it enables to cancel superfluous values of attributes.

Technical regulation for the values of hydraulic parameters of used metal pipes in order to extend the period of their use

2021 ◽  
Vol 18 (3) ◽  
pp. 421-427
Author(s):  
Oleg A. PRODOUS ◽  
◽  
Lev D. TEREKHOV ◽  
Petr P. YAKUBCHIK ◽  
Alexander S. CHERNIKH ◽  
...  
Keyword(s):  
Practical Importance ◽  
Hydraulic Calculation ◽  
Technical Regulation ◽  
Supply Networks ◽  
Steel Pipes ◽  
Head Losses ◽  
Metal Pipes ◽  
Inner Diameter ◽  
Pumping Equipment ◽  
The Given

Objective: To compare the characteristics of hydraulic potential in worn steel pipes with internal deposits subjected to cleaning by mechanical and chemical methods. Methods: Calculated dependencies are used for hydraulic calculation of new metal pipes and pipes with internal deposits. Results: A calculated dependence was obtained to determine the value of the inner diameter of pipes with any thickness of the layer of internal deposits. The concept of an efficient pipeline is introduced and a comparison made of the values of head losses in new pipes and in pipes with internal deposits. A specific practical example is considered. For the given example, compare the values of energy consumption of pumping equipment for two methods of cleaning the inner surface of pipes. Measures are indicated to ensure the efficiency of operation of water supply networks. Practical importance: It is shown that the chemical method of technical regulation of the hydraulic characteristics of new steel pipes provides an extension of the period of their further use.

scholarly journals THE INFORMATION SYSTEM CYBERSECURITY CONCEPT OF THE STATE BORDER GUARD SERVICE OF UKRAINE AT THE MODERNIZATION STAGE

2019 ◽  
pp. 3-10
Author(s):  
Mykhailo Strelbitskyi
Keyword(s):  
Information System ◽  
Information Systems ◽  
Cyber Security ◽  
General Tendency ◽  
Functional Dependencies ◽  
Cyber Defense ◽  
Average Probability ◽  
Properties Of Information ◽  
Weighted Probability ◽  
The Given

The article analyzes the functions of the Border Guard Service of Ukraine and its information systems. It is determined that the modernization of the components of the integrated information system causes a violation of the existing system of cyber defense. The analysis of existing approaches to ensuring the protection of information in information systems has shown a sufficiently deep study of research separately for each information system. However, unexperienced features of the interaction of these systems remain, in particular, with the modernization of certain information systems in terms of providing cyber defense in general. The process of modernization of information systems is carried out according to individual components of the system or complex and requires their coordination in the process of joint operation. The article gives the justification of modernization strategies according to the groups of criteria: the level of cyber security, the peculiarities of the functioning of information systems. It is noted that the value of the probability of violating the properties of the information resource varies over the entire period of modernization. Therefore, to choose the strategy of modernization at the value of probability at any time is not correct. It is necessary to take into account the general tendency of the function of changing this probability. The most expedient is the distribution of this group of criteria into three components of the criteria for the level of cyber security: the normative - the criterion in which the current value of the probability of violating cybersecurity does not exceed the given; average - the criterion for which the average probability of a violation of cybersecurity does not exceed the prescribed; weighted - a criterion for which the average weighted probability of cybersecurity violation will not exceed the given. The article presents functional dependencies for determining the probability of cyber security violations for each of the groups. As a result of the study, it was determined that the priority indicator of the effectiveness of the process of modernizing the information systems of the border agency is the maximum value of the probability of violating the properties of information in the process of modernization

scholarly journals ADAPTIVE ALGORITHM FOR DETERMINING THE PARAMETERS OF AN INACCESSIBLE POINT OF AN OBJECT

2021 ◽  
pp. 58-70
Author(s):  
Aleksandr Brailov ◽  
Vitaliy Panchenko
Keyword(s):  
Adaptive Algorithm ◽  
Minimum Distance ◽  
Three Dimensional ◽  
Geometrical Model ◽  
Multiple Variables ◽  
The Common ◽  
Relative Errors ◽  
The Given ◽  
Real Experimental Data

In the present research the optimizing approach to the determination of the parameters of an inaccessible point of an object is developed. The common issues are revealed and essential steps of their resolution are identified. The essence of the problem is an objective contradiction between a requirement for the location of points A and B of the centers of the sighting tubes of optical devices in the same horizontal plane P1 and the lack of a real possibility to perform such to achieve this an identical one-level arrangement without error. The aim of the study is to develop strategies for determining the position of an inaccessible point of an object in the minimum domain between intersecting sighting rays as well as an adaptive algorithm for determining the values of the parameters of an inaccessible point under the given absolute and relative errors. To achieve this aim, the following problems are formulated and solved in the paper: 1. Develop strategies for determining the position of the inaccessible point of the object in the minimum domain between the intersecting sighting rays. 2. Develop an adaptive algorithm for determining the values of the parameters of an inaccessible point based on the specified absolute and relative errors. In the proposed optimizing approach, the three-dimensional geometrical model with crossed directional rays for the determination of coordinates of the inaccessible point of an object is developed. It is discussed that points С and C', coordinated of which to be determined, locates in domain [CDM, CEM], [C'D'M, C'E'M] of the minimum distance ρmin between crossed directional rays. The optimizing problem of the determination of coordinates of an inaccessible point of an object in space is reduced to a problem of the determination of the minimum distance between two crossed directional rays. It’s known from the theory of function of multiple variables that function ρ = f (tC'D', tC'E') reaches its extremum ρmin when its partial derivatives by each variable are equal to zero. Three strategies for selecting the position of the inaccessible point C (xC, yC, zC) in the found minimum region [CDM, CEM] are proposed. The required point C' (xC', yC', zC') can be located, for example, in the middle of the minimum segment [C'D'M, C'E'M]. The essence of the adaptive algorithm is in optimizing the variation of the initial values of data α, α', β, γ, γ', AB, at which the absolute and relative errors of the coordinates of the inaccessible point satisfy the error values set by the customer (0.0001-1.2%) The proposed approach is verified using real experimental data.

scholarly journals МЕТОД ВРЕДНОВАЊА И ОЦЕЊИВАЊА ТУРИСТИЧКОГ ДОГАЂАЈА: СТУДИЈА СЛУЧАЈА ФЕСТИВАЛА ЗАБАВНЕ МУЗИКЕ У ВРЊАЧКОЈ БАЊИ

TEME ◽  
2020 ◽  
pp. 475
Author(s):  
Marija Lakićević ◽  
Marija Kostić ◽  
Snežana Milićević
Keyword(s):  
Primary Data ◽  
Survey Method ◽  
Pop Music ◽  
Tourist Destination ◽  
Research Results ◽  
The Given

The focus of the research presented in the paper is the method for evaluating and assessing tourism events and its applicability which is illustrated with the visitors’ assessment of the Festival of pop music in Vrnjačka Banja (the Festival). The primary data collected for the purpose of the Festival evaluation were gathered by survey method on a sample of 200 respondents, who were classified into two groups, locals and other visitors, and asked to assess the given criteria. The paper aims at using evaluation for improving the Festival development with the ultimate goal of improving the quality of the very event, which would influence an increase in the number of visitors to the Festival, i.e. tourist destination. The research results confirm the employed method to be useful for the evaluation of tourism events.

Atmospheric Predictability: Why Butterflies Are Not of Practical Importance

2014 ◽  
Vol 71 (7) ◽  
pp. 2476-2488 ◽  
Author(s):  
Dale R. Durran ◽  
Mark Gingrich
Keyword(s):  
Kinetic Energy ◽  
Turbulence Model ◽  
Large Scale ◽  
Mesoscale Model ◽  
Practical Importance ◽  
Absolute Magnitude ◽  
Error Growth ◽  
Initial Error ◽  
Initial Errors ◽  
Relative Errors

Abstract The spectral turbulence model of Lorenz, as modified for surface quasigeostrophic dynamics by Rotunno and Snyder, is further modified to more smoothly approach nonlinear saturation. This model is used to investigate error growth starting from different distributions of the initial error. Consistent with an often overlooked finding by Lorenz, the loss of predictability generated by initial errors of small but fixed absolute magnitude is essentially independent of their spatial scale when the background saturation kinetic energy spectrum is proportional to the −5/3 power of the wavenumber. Thus, because the background kinetic energy increases with scale, very small relative errors at long wavelengths have similar impacts on perturbation error growth as large relative errors at short wavelengths. To the extent that this model applies to practical meteorological forecasts, the influence of initial perturbations generated by butterflies would be swamped by unavoidable tiny relative errors in the large scales. The rough applicability of the authors’ modified spectral turbulence model to the atmosphere over scales ranging between 10 and 1000 km is supported by the good estimate that it provides for the ensemble error growth in state-of-the-art ensemble mesoscale model simulations of two winter storms. The initial-error spectrum for the ensemble perturbations in these cases has maximum power at the longest wavelengths. The dominance of large-scale errors in the ensemble suggests that mesoscale weather forecasts may often be limited by errors arising from the large scales instead of being produced solely through an upscale cascade from the smallest scales.

scholarly journals Assessment of emergency supply of healthcare facilities as a module of the crisis management information system

2018 ◽  
Vol 210 ◽  
pp. 02026
Author(s):  
Katerina Vichova ◽  
Martin Hromada
Keyword(s):  
Information Systems ◽  
Crisis Management ◽  
Management Information Systems ◽  
Crisis Preparedness ◽  
Management Information ◽  
Healthcare Facilities ◽  
Medical Facilities ◽  
The World ◽  
The Impact ◽  
The Given

This paper focuses on assessing the crisis preparedness of healthcare facilities as a new module of crisis management information systems. The crisis is widespread around the world, and it is essential that the medical facility is ready. The first part of the thesis deals with the introduction to the given issue and the crisis preparedness of the population. The second part of the paper deals with the analysis of extraordinary events and crisis situations around the world. The impact of emergencies on healthcare facilities is described in this part. The third part of the thesis deals with the emergency survival of the population. The following part describes the methods used in this research. The heuristic analysis of preparedness is one of the most valuable methods. The next section presents the results of the work according to the chosen method. In this section, we will find the strengths and weaknesses of the evaluated medical facilities. At the end of the thesis is proposed a new module for evaluation of medical facilities. This module can be applied as part of crisis management information systems.

SCIENTIFIC COMMUNICATION IN THE WORLD OF DIGITAL TECHNOLOGIES: CONDITIONS AND PERSPECTIVES REGARDING THE DEVELOPMENT OF SCIENTIFIC JOURNALS

2019 ◽  
Vol 50 ◽  
pp. 31-32
Author(s):  
Magdalena Kachniewska
Keyword(s):  
Information Systems ◽  
Scientific Communication ◽  
Assessment System ◽  
Alternative Methods ◽  
Scientific Journals ◽  
Scientific Publications ◽  
Research Results ◽  
Dynamic Development ◽  
New Information ◽  
The World

Purpose. The presentation of challenges with which scientific journals and - more broadly - scientific communication, will have to face in the substantive, technological and financial sphere in the conditions of constant evolution of the digital world, dynamic development of new information systems in science (e-library, library 2.0) and new phenomena conditioning the behaviour of Internet users. Method. The views presented in the article are the result of a review of literature regarding scientific journals and empirical research, which was conducted from April to August 2018 among 132 authors representing the world of science and economic practices. Findings. The open access (OA) movement has caused significant changes in the behaviour of people of science in publishing and depositing research results. The prospect of taking over all the functions of scientific journals by scientific repositories still seems to be distant due to the lack of alternative methods for assessing the quality of scientific publications. There are doubts about the division into scientific, institutional repositories and the repositories belonging to scientific journals, which results from unclear business models of individual solutions. The phenomenon of self-publishing is stimulated by the dynamic development of research carried out by business units, skilfully analysing the resources of large data sets and successfully popularising research results in social repositories. This is new quality in the area of information exchange, which requires rapid adaptation on scientific grounds. An insufficiently implemented postulate to popularise scientific knowledge and its transfer to business practice remains an equally important challenge. Research and conclusions limitations. The results of the survey based on the respondents’ subjective assessment should be treated with caution and do not allow to draw general conclusions. The research revealed significant discrepancies in respondents' opinions regarding the future of scientific journals and their prospects for functioning in new information systems. The highest doubts concern the quality assessment system of scientific publications and the business model of scientific repositories: the significant number of stakeholders of the scientific communication system, dispersed in various scientific, political and economic systems, further limits the possibility of formulating unambiguous decisions in this respect. Originality. The presented article formulates challenges for scientific journals whose functions are being increasingly taken over by scientific and social repositories. In contrast to the previously published works, this suggests solutions in the field of artificial intelligence, which will enable complete change in the way of publishing and validation of knowledge as well as quality control of scientific research. Type of work. Review article.

Scientific Communication in the World of Digital Technologies: Conditions and Perspectives Regarding the Development of Scientific Journals

2019 ◽  
Vol 50 (2) ◽  
pp. 16-16
Author(s):  
Magdalena Kachniewska
Keyword(s):  
Information Systems ◽  
Scientific Communication ◽  
Assessment System ◽  
Alternative Methods ◽  
Scientific Journals ◽  
Scientific Publications ◽  
Research Results ◽  
Dynamic Development ◽  
New Information ◽  
The World

Purpose. The presentation of challenges with which scientific journals and – more broadly – scientific communication, will have to face in the substantive, technological and financial sphere in the conditions of constant evolution of the digital world, dynamic development of new information systems in science (e-library, library 2.0) and new phenomena conditioning the behaviour of Internet users. Method. The views presented in the article are the result of a review of literature regarding scientific journals and empirical research, which was conducted from April to August 2018 among 132 authors representing the world of science and economic practices. Findings. The open access (OA) movement has caused significant changes in the behaviour of people of science in publishing and depositing research results. The prospect of taking over all the functions of scientific journals by scientific repositories still seems to be distant due to the lack of alternative methods for assessing the quality of scientific publications. There are doubts about the division into scientific, institutional repositories and the repositories belonging to scientific journals, which results from unclear business models of individual solutions. The phenomenon of self-publishing is stimulated by the dynamic development of research carried out by business units, skilfully analysing the resources of large data sets and successfully popularising research results in social repositories. This is new quality in the area of information exchange, which requires rapid adaptation on scientific grounds. An insufficiently implemented postulate to popularise scientific knowledge and its transfer to business practice remains an equally important challenge. Research and conclusions limitations. The results of the survey based on the respondents’ subjective assessment should be treated with caution and do not allow to draw general conclusions. The research revealed significant discrepancies in respondents’ opinions regarding the future of scientific journals and their prospects for functioning in new information systems. The highest doubts concern the quality assessment system of scientific publications and the business model of scientific repositories: the significant number of stakeholders of the scientific communication system, dispersed in various scientific, political and economic systems, further limits the possibility of formulating unambiguous decisions in this respect. Originality. The presented article formulates challenges for scientific journals whose functions are being increasingly taken over by scientific and social repositories. In contrast to the previously published works, this suggests solutions in the field of artificial intelligence, which will enable complete change in the way of publishing and validation of knowledge as well as quality control of scientific research. Type of work. Review article.

ON ECONOMIC ASSESSMENT OF BALLASTLESS TRACK STRUCTURE EFFICIENCY

2017 ◽  
pp. 63-69
Author(s):  
Ludmila Andreyeva ◽  
Yevgeniy Svintsov ◽  
Yelena Tarasevich
Keyword(s):  
Comparative Analysis ◽  
Practical Importance ◽  
Economic Assessment ◽  
Track Structure ◽  
Advantages And Disadvantages ◽  
Ballastless Track ◽  
Study Results ◽  
Ballast Track ◽  
The Given

Objective: To describe the regulation of railroad traffic parameters in modern conditions, that lead to the necessity of putting into operation the new systems of track design, relevant for regulations in question. Methods: The method of matching, as well as the method of comparative analysis was applied in the study. Results: The advantages and disadvantages of ballastless track structure and conventional ballast track design were compared. The possibility of extensive application of ballastless track structure on modern railroads was analyzed. Practical importance: Ballastless track structure implementation will make it possible to solve practical tasks of using the given type of track design in transport construction.

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