2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)最新文献

{"title":"Semi-analytical Study of Large Bending Strains of the Inhomogeneous Bar","authors":"M. Karyakin, O. Pustovalova, E. Tiutiunnikova","doi":"10.1109/MCSI.2018.00025","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00025","url":null,"abstract":"This paper presents an analysis of the problem of pure bending of an inhomogeneous nonlinearly elastic bar with rectangular cross-section. The character of heterogeneity corresponds to the case of hard coating on the inner or outer bar surface. Two types of continuous heterogeneity, linear and exponential, as well as laminated bar, or case of piecewise constant values of material parameters are considered. The commonly used models of compressible nonlinearly elastic media are applied to describe the mechanical properties of bar’s material at large strains. The 2D problem is reduced to the boundary value problem for second order differential equations by means of a semi-inverse method. The nonlinear boundary value problems are solved using an automation package developed by the authors within the framework of the computer algebra system Maple. The influence of coating on the load diagram and the stability of the bent bar is evaluated.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131177652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heuristics for Electric Vehicle Charging Station Allocation Problem","authors":"L. Adacher","doi":"10.1109/MCSI.2018.00024","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00024","url":null,"abstract":"The electric vehicles have been considered in advantage in terms of sustainability as well as emission of pollutants. However, the successful incorporation of electric vehicles in the actual transportation system depends on overcoming of two main barriers: the low range of the electric vehicles in comparison with traditional internal combustion vehicles, and the low number of electric recharging stations. By increasing the number of recharging points it is possible to compensate the range limitations of electric vehicles, nevertheless, creating this infrastructure causes high costs. Therefore, the objective of this study has been to develop an optimization methodology that allows planning of the recharging infrastructure for electric vehicles in an urban environment that minimizes the cost, based on provider's point of view.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125861920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Configuration Approach for Convolutional Neural Networks Used for Defect Detection on Surfaces","authors":"D. García, I. García, F. J. delaCalle, R. Usamentiaga","doi":"10.1109/MCSI.2018.00019","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00019","url":null,"abstract":"The manufacturing industries must guarantee that the products delivered to clients do not have defects, such as irregularities on the surface. To that end, complex systems inspect the products on completion of their manufacturing to detect possible defects. But the design and configuration of these systems is cumbersome, specific for each system, and requires a lot of experience. Currently, there is a trend to build all these systems using Convolutional Neural Networks (CNN), due to the theoretical simplicity of this approach: images of the surface of the products are processed by a trained CNN, which detects defects in the images. But the generation of a well-trained CNN is also a complex process, generally not always properly documented in the literature, and strongly dependent on the application domain. To facilitate the use of CNNs, this paper proposes a configuration approach for CNNs whose objective is the detection of defects on the surface of manufactured products. As an example, the approach is used to configure a CNN to detect surface defects on manufactured rails.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130497657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Reliability Modelling Method for Aircraft Electrical Power System Based on Probability Network","authors":"Yao Wang, Mingshun Yang, Zhihong Miao, Xiangyu Dong","doi":"10.1109/MCSI.2018.00043","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00043","url":null,"abstract":"As aircraft electrical power system (AEPS) is critical for flight safety, a system-level reliability modelling method for large complex AEPS is proposed with a typical power system as illustration. The modelling method concludes two parts: first, based on the data structure of stack, a depthfirst search algorithm for solving the minimal path sets from each power source node to its sink nodes (which correspond to power supply bus in AEPS) is developed first; and then on the basis of Bayesian network theory, a reliability model construction algorithm for AEPS is proposed by transforming all these minimal path sets into an equivalent probability network. Finally, the power supply reliability of the typical power system is evaluated by using the existent traditional method and the new proposed method separately. The calculation results show that, compared with the traditional method, the new reliability model not only can be used to compute the power supply reliability of each sink node exactly and faster, but also has the advantage of analyzing the dependency of the components in AEPS.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130099379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Viscosity Variability Impact on 2D Laminar and Turbulent Poiseuille Velocity Profiles; Characteristic-Based Split (CBS) Stabilization","authors":"A. Pasculli","doi":"10.1109/MCSI.2018.00038","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00038","url":null,"abstract":"The erosion of riverbeds and riverbanks depends, among other causes, both on the velocity fields and on their gradient near their boundaries, with the generation of shear stresses. The presence of sediments modifies the viscosity and, accordingly, modifies the profiles, particularly near the edges right where they are generated. Therefore, in this work, the distortion of the velocity profiles due to an imposed spatial variability of viscosity, was studied applying the Computational Fluid Dynamics (CFD). In particular, as test cases, laminar and turbulent Plane Poiseuille flows, were selected. For simplicity, it was assumed that the sediment distribution and therefore the viscosity distribution was not influenced by the mixing due to velocity field. That is, the equilibrium configuration was determined as a consequence of a spatially variable distribution of viscosity. The 2D Navier-Stokes equations, in steady state conditions, were numerically solved exploiting a research software developed and discussed by the author [1]. The turbulence was considered through the RANS (Reynolds Averaged Navier Stokes) approach. The two equations k ƒ{ ƒÕ models were employed. The turbulence phenomena near solid boundaries was simulated by the means of Wall-Functions. Spatial discretization was carried out using the Finite Element Method (FEM). A structured meshing with h like adaptability was developed. Then, in order to avoid velocities and pressure instabilities, the Characteristic-based split algorithm (CBS) was applied, while, in order to correctly consider incompressibility, by a numerical point of view, the Method of Artificial Compressibility (AC) was selected. Accordingly, the related CBS-AC three steps algorithm was implemented [1]. Then, some parametric numerical experiments were performed, considering a semi-implicit, approach. As was to be expected, the velocity profiles, for both laminar and turbulent were influenced by the viscosity distribution. The discussion of the overall results points out the sensitivity of the algorithms not only to the meshes size, to their distribution and to the number of iterations, but also to some intrinsic ¡§experimental numerical dials¡¨ (safe coefficients, explicit vs implicit ratio), specific of the selected approach. Moreover, suggestions have emerged for more complex and more complete simulations which, necessarily, would use methods based on iterations internal to each time-step","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128847945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Formulation of Plücker Coordinates Using Projective Representation","authors":"V. Skala, Michal Smolik","doi":"10.1109/MCSI.2018.00020","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00020","url":null,"abstract":"This contribution presents a new formulation of Plücker coordinates using geometric algebra and standard linear algebra with projective representation. The Plücker coordinates are usually used for a line representation in space, which is given by two points. However, the line can be also given as an intersection of two planes in space. The principle of duality leads to a simple formulation for both cases. The presented approach uses homogenous coordinates with the duality principle application. It is convenient for application on GPU as well. The Plücker coordinates are used in many applications, e.g. in robotics, computer aided design and computer graphics algorithms etc.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115172013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multilevel Predictive Control System for an Activated Sludge Wastewater Treatment Process","authors":"I. Nascu, I. Nascu","doi":"10.1109/MCSI.2018.00013","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00013","url":null,"abstract":"This paper deals with multilevel (hierarchical) control and optimization of a conventional Wastewater Treatment Plant (WWTP). A multilevel system to control the plant operation that satisfies the effluent water quality requirements and increases the plant energy efficiency is described. The first level contains the basic process control loops and the second level, the optimization level, provides optimal setpoint values for the first level control loops based on the Extended Prediction Self-Adaptive Control (EPSAC) method. The proposed control strategy was investigated and evaluated by performing simulations and analyzing the results. Both the set point tracking and the regulatory performances have been tested.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121469688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Electronic Settlement System of Agricultural Products Wholesale Market","authors":"Xiaoling Li, Y. Tan","doi":"10.1109/MCSI.2018.00048","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00048","url":null,"abstract":"This paper designed an electronic settlement system of agricultural products wholesale market built on onecard electronic payment system. A one-card subsystem was designed and its transaction between buyers and sellers in market was also given. Market electronic settlement subsystem included four parts, bank-market docking system, deposit system, reconciliation transaction and weighting settlement system. A network structures among these subsystems were designed and their detailed transaction processes were introduced. The standardized management of agricultural product wholesale markets, the credibility of the wholesale market and the modernization of agricultural product circulation are solved by the design of an electronic settlement system of agricultural products wholesale market in this paper.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116632857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Approximation by Local Complex-Valued Splines","authors":"I. Burova, E. F. Muzafarova","doi":"10.1109/MCSI.2018.00021","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00021","url":null,"abstract":"Sometimes it is desirable to visualize complex-valued functions in polar co-ordinates that always have difficulties. But actually it is sufficient to visualize separately the real and imaginary parts of a complex-valued function. For a fast visualization process, local spline interpolation of functions from two variables is the most convenient in applications and gives approximations with the required order of accuracy. This paper deals with local complex-valued splines, constructed using tensor product spline interpolation in a disc with a centre of zero and a radius of 1. For constructing the tensor product we use local basis splines of a radial variable and local complex-valued basis splines of an angular variable. For the construction of the grid we consider a number of circles in the disc of radius 1 with a center of zero, and get a number of points on the boundary of this disc, arranged from the centre to the edge. The points at which those lines cross each circle form the grid nodes. The approximation is constructed separately in each elementary segment, formed by two arcs and two line segments. For the approximation of a complex-valued function we use the values of this function in several nodes near this elementary segment and the tensor product of basis splines. The order of the approximation depends on the splines’ properties which we use in the tensor product. In this paper we use local exponential and polynomial splines of second and third order approximation.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122454014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mathematical Modelling of Circular Corrugated Membranes","authors":"M. Karyakin, O. Pustovalova, Yu. A. Ustinov","doi":"10.1109/MCSI.2018.00023","DOIUrl":"https://doi.org/10.1109/MCSI.2018.00023","url":null,"abstract":"The paper presents a technique for determining bifurcation points for circular corrugated membranes. The applied Kirchhoff-Love theory for non-shallow shells was used as a base for deriving nonlinear as well as linearized boundary value problems of equilibrium. Two areas of applications considered: the targeted introduction of small technological changes in the shape of the cup for the elimination of unwanted bifurcation points to provide the work of the shell in an axisymmetric mode and shape optimization problems related with obtaining linear loading diagram for a sufficiently large values of the shell strains. It was shown that the experimentally manifested sensitivity of a spherical dome to imperfections is associated with a large number of closely located bifurcation points along non-axisymmetric modes. The considered example of the genetic algorithm usage to the problem of the shell shape optimization demonstrated its efficiency and reliability.","PeriodicalId":410941,"journal":{"name":"2018 5th International Conference on Mathematics and Computers in Sciences and Industry (MCSI)","volume":"414 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124815186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}