Mathematical Machines and Systems. 2017 #2
ABSTRACTS
COMPUTER SYSTEMS
UDC 004.27; 004.315: 004.25; 004.382.2
Features of designing computer systems on a FPGA crystal / O.V. Palagin,
Yu.S. Yakovlev // Mathematical Machines and Systems. – 2017. – N 2. – P. 3 – 14.
On the bases of the analysis of domestic and foreign publications there were defined the features of designing «systems on a crystal» FPGA (System on Chip-SoC), including difficult functional blocks (DFblocks) as well as the built in processor cores. Moreover there were presented the possible types of DFblocks and software arising at designing. The parametres of some synthesized processor DF-blocks as well as brief information about results of two developed projects on a crystal are resulted. Таbl.: 2. Figs.: 3. Refs.: 17 titles.
UDC 621.396
Approaches to the development of a new architecture of management system of heterogeneous wireless sensor networks / V.A. Romanuk, O.I. Lysenko, I.V. Alekseeva, A.V. Romanuk, V.I. Novikov // Mathematical Machines and Systems. – 2017. – N 2. – P. 15 – 23.
The purpose of this research is to develop a new architecture of building management system of wireless sensor network with heterogeneous sensors that are able to self-organize information exchange as well as are adaptive to conditions of functioning that are impossible to predict in design process. Figs.: 4. Refs.: 11 titles.
UDC 623.764
Advanced distributed management of roads with driverless cars / P.S. Sapaty // Mathematical Machines and Systems. – 2017. – N 2. – P. 24 – 38.
The widely expected use of autonomous cars can change the landscape for car manufacturers who can rethink business models. But driverless cars may remain just toys for a long time, because the main, and extremely complex, problem may be the effective automatic management of roads with numerous driverless cars. We will try to shed some light on the real management of complex road networks with autonomous cars using high-level networking technology already tested on many applications, both civil and military. Along with optimisation on the infrastructure level, solutions will be shown for local problems by distributed emergency scenarios dynamically covering arbitrary regions with any number of communicating vehicles. Each solution will be presented and explained in a special high-level language which can be effectively interpreted in a fully distributed mode, without any central resources, and with high mobility of extremely compact scenario code. Part of this material has been accepted for presentation at The Future of Transportation World Conference in Cologne (Germany) July 5–6, 2017. Figs.: 17. Refs.: 12 titles.
INFORMATION AND TELECOMMUNICATION TECHNOLOGY
UDC 681.3
Dysfunction of the referential vocabulary of the spelling checking system and the approach to its reduction / V.A. Lytvynov, S.Ya. Maistrenko, K.V. Khurcilava // Mathematical Machines and Systems. – 2017. – N 2. – P. 39 – 48.
The checking process model in the system of orthography spellchecking and correlations which determine the index of dysfunction of the referential vocabulary is cosidered. The task of agreeing the criteria for forming the referential vocabulary is stated; its solution algorithm has been proposed; the results of algorithm modeling have been cited for specific vocabularies of the Ukrainian and Russian languages. Тabl.: 5. Figs.: 3. Refs.: 7 titles.
UDC 004.9:504:519.6
Comparison of methods for calculating the parameters of evaporation of hazardous liquids from the surface of the spill basin on a hard surface / I.M. Oksanych, V.P. Bespalov,
I.V. Kovalets // Mathematical Machines and Systems. – 2017. – N 2. – P. 49 – 59.
The article presents a comparative analysis of the domestic and foreign methods for determining the parameters of the evaporation of hazardous liquids when spilled in accidents. Formulas and research results are presented. The advantages and disadvantages of each method are discussed. Figs.: 11. Refs.: 15 titles.
UDC 004.942
Efficiency of sliced processing of vector data arrays / Т.B. Martynuk, L.I. Tymchenko,
A.V. Kozhemyako, L.M. Kupershtein // Mathematical Machines and Systems. – 2017. – N2. – P. 60 – 67.
The basic provisions of the efficiency criterion for the parallel processing of data algorithms are presented. A comparative analysis of parallel algorithms of multi-operand summation is conducted. The advantages of the multi-sliced processing of vector data set are shown. Tabl.: 2. Fig.: 1. Refs.: 13 titles.
UDC 519.237.5
Building multi-unit polygonal regression equations / S.M. Lapach, V.M. Kuzmin // Mathematical Machines and Systems. – 2017. – N 2. – P. 68 – 76.
A formalized procedure of definition of polygonal absciss of switch points of multi-unit regression was developed. It is based on the preliminary building of the most informative polynomial regression. From the resulting model analytically determined the approximate location of the desired points. Refinements coordinates is in the search for the best descriptive characteristics of polygonal regression equation. Determined points enable semantic analysis process and a reasonable forecast. Таbl.: 6. Figs.: 5. Refs.: 10 titles.
UDC 004.9
Adaptive control system for the deuterium pre-concentration stage in heavy water production / D.V. Karachenets // Mathematical Machines and Systems. – 2017. – N 2. – P. 77 – 96.
The history of creation in 1971–1975 years at SDB MMS of the Institute of Cybernetics (Kyiv city) the control system for the deuterium pre-concentration stage in heavy water production at Dneprodzerzhinsk chemical plant (now Kamianske city, PJSC “DneprAzot”) is considered. It is given a technological block-diagram of the stage with its components and block-diagram of ACSTP which was developed in consequence of investigations of this complex controled object. A mathematical model of the distillation columns in the separating units of hydrogen isotopes which was used for synthesis of an algorithm of the adaptive stochastic optimal system with active accumulation of information about controled probabilistic processes is described. The results of the carried out tests of the system confirmed its efficiency. Таbl.: 1. Figs.: 6. Refs.: 18 titles.
SIMULATION AND MANAGEMENT
UDC 53.01:53.05+519.2
Vector multi-valued determinate processes of random and hyper-random types /
I.I. Gorban // Mathematical Machines and Systems. – 2017. – N 2. – P. 97 – 109.
Methods for description and analysis of vector multi-valued determinate processes of random and hyper-random types respectively characterized by measure and set of measures are developed. For such processes, we introduce the notions of continuity, branch of the process, derivative, differential, and integral. Areas of expedient application of the developed approach are outlined. Refs.: 11 titles.
UDC 004.9:504:519.6
Preparation of a computational finite-volume unstructured grid for three-dimensional CFD modeling of the surface layer of the atmosphere in the urban area using the OpenFoam software package / O.V. Khalchenkov // Mathematical Machines and Systems. – 2017. – N2. – P. 110 – 119.
The problem of preparing a horizontally unstructured computational grid with the help of the GMSH program for three-dimensional hydrodynamic (CFD) modeling of the atmospheric surface layer in urban zone using the OpenFoam software package and information on the building area was investigated. The algorithms of using freely available GIS-data of the Google Earth program and the global data sets of land using and topography were developed. Figs.: 8. Refs.: 8 titles.
UDC 004.652 + 001.893
Site of the scientific project: features of the implementation / O.V. Kovalenko // Mathematical Machines and Systems. – 2017. – N 2. – P. 120 – 129.
Some features of the site of the scientific project are presented in the article. The servieis for filling the internal project were analized and selected. The possible structure of the implementation of the web interface of the external portal was considered and the features of the information presentation were explored. The foregoing provisions were implemented in the form of a technical assignment and a design project of the site “Tritium on the Earth” as well as implemented during the creation of a software product “Random Point”. The conclusions were made. Tabl.: 1. Figs.: 3. Regs.: 6 titles.
UDC 519.712.3
On one approach to assessment the efficiency indices of the organizational structure of university / Z.R. Jamalov // Mathematical Machines and Systems. – 2017. – N 2. – P. 130 – 144.
It is proposed a method for weight coefficients assessing that establish the importance of control functions in the overall structure of the complex integrated management system of the university, as well as to assess the volume of works. This approach based on the application of the method of fuzzy inference, allows us to aggregate the expert assessments of the impact factors that have already been received at the initial stage and, thereby, to assess the performance indicators of the organizational structure of the university more accurately. Таbl.: 3. Figs.: 3. Refs.: 6 titles.
QUALITY, RELIABILITY AND CERTIFICATION OF COMPUTER TECHNIQUE AND SOFTWARE
UDC 621.3.019.3
On the relationship between the reliability and veracity of the computer systems functioning / O.V. Fedukhin, N.V. Cespedes Garcia, Ar.A. Mukha // Mathematical Machines and Systems. – 2017. – N 2. – P. 145 – 155.
The problems of determining the analytical dependence of the reliability of the computer systems functioning on the type of structures and their characteristics are considered. The calculations of reliability and probability of failure-free operation of various structures of computer systems are carried out. Тabl.: 3. Figs.: 4. Refs.: 3 titles.
