2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)最新文献

{"title":"The application of ensemble learning for delineation of the left ventricle on echocardiographic records","authors":"V. Bobkov, A. Bobkova, S. Porshnev, Vasily Zuzin","doi":"10.1109/DYNAMICS.2016.7818984","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7818984","url":null,"abstract":"The possibility of an ultrasound study of the heart is widely used in modern cardiology. This non-invasive technology allows studying cardiac activity of the patient by determining the global contractility of the heart muscle. The methods, which is used in echocardiography, require performing manual operations from specially trained medical professionals. A number of researchers are working on the problem of automation of this medical technology. The article shows the way of solving the problem of the left ventricle region identification in echocardiography records with machine learning techniques. The task of the left ventricle delineation is reduced to the problem of pixels classification on video frames. A pixel can belong to one of two classes (the background region or the region of the left ventricle). The possibility of solving the task was tested with the following classifiers: decision tree, AdaBoost classifier and random forest classifier. The assessment of classification results was performed using ROC curves. The best performance was obtained for decision tree classifier (AUC 0.93) and random forest classifier (AUC 0.93).","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129856789","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":"Study on influence of metastable state of helium on atomic silicon concentration","authors":"V. Strunin, L. V. Baranova, G. Khudaibergenov","doi":"10.1109/DYNAMICS.2016.7819088","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7819088","url":null,"abstract":"Amorphous silicon (a-Si:H) thin-films being an advantageous base for solar cells manufacturing face several disadvantages, such as relatively wide bandgap (1.7… 1.8 eV) and cells degradation effect during prolonged sun exposure (Staebler-Wronski Effect) that lowers the efficiency of the cells compared to, for instance, monocrystalline solar cells. We suggest enhancing the solar cell conversion efficiency by embedding a structure composed of single-crystal silicon nanoparticles (Si-NPs) into an a-Si:H layer. Si-NPs synthesis is performed in the glow-discharge plasma of argon-helium-silane plasma. To understand the mechanism of Si-NPs we suggest a chemical model of silane decomposition in the in the glow-discharge plasma. Numerical simulation of argon-helium-silane plasma of radio frequency (RF) discharge allowed us to obtain equilibrium concentration of radicals, defining the formation process, and to define photoelectric qualities of amorphous silicon thin-films. The influence of metastable state of helium on atomic silicon concentration has been investigated. Addition of helium in Ar+SiH4 leads plasma to increase in concentration of Si, owing to formation of the padding channel of decomposition of a silane through reactions with metastable atoms of helium.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129574066","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":"Development of invariant features of nonconvex images for system of automatic recognition of three-dimensional objects","authors":"A. Terekhin","doi":"10.1109/DYNAMICS.2016.7819097","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7819097","url":null,"abstract":"The ubiquity increase of production volumes leads to the introduction of automatic conveyors and assembly lines. An integral part of it is the robotic units, equipped with technical vision. System of automatic recognition is used therein as a machine vision. The main part of any SAR is a vector of image features. During the past five years, various of researchers have published many algorithms for calculating object features that allows to recognize three-dimensional objects [1, 2, 3 and 4]. This article describes an algorithm for calculating the dimensionless features of flat binary nonconvex images that are invariant to a shift, rotate, and scale change of the image of the object in the scene. The basis of developed features is a vector of diagonal features of form (created by author) of images of projections of three-dimensional objects, that describes the shape of the convex projection of the object. Selecting the basis for the development of new features is determined by the fact that using the basis of diagonal features of form, image classification model was created. It allows to use this features for solving the problem of recognition of randomly arranged three-dimensional objects by two images.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"56 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128958472","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":"Dynamic models choice for pantographs of high-speed railway transport","authors":"O. Sidorov, V. Goryunov, I. Salya, V. V. Tomilov","doi":"10.1109/DYNAMICS.2016.7819087","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7819087","url":null,"abstract":"The development of high-speed rail is inextricably linked with the development of pantographs, which should provide a reliable and economical current collection at high speeds. Development of high-speed pantographs performed by using computer technology which allows for selection of the optimum parameters and characteristics of the designed devices. Selection of such parameters and characteristics is based on the numerical simulation of interaction of pantograph and catenary. This paper discusses three main types of pantograph model: model with reduced mass, rod model and the model in the CAD-system. The purpose of research is developing of procedures for the selection of the dynamic model of high-speed electric transport pantograph. There are results of experimental studies such as contact pressure on the catenary contact section and the results of contact pressure calculation at the similar equivalent section by using computational tools. The technique has been obtained as a result of the study. It allows to choose a dynamic model of pantograph on the basis of the tasks of interaction modeling of pantograph and catenary. The model with the reduced mass is necessary and sufficient to use in case of optimization of catenary section. Besides, it is necessary to use a rod model of pantograph or a model created in the CAD-system to optimize its parameters.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126757616","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":"The research of operation accuracy of a memristor-based artificial neural network with an input signal containing noise and pulse interference","authors":"S. Danilin, S. Shchanikov","doi":"10.1109/DYNAMICS.2016.7818997","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7818997","url":null,"abstract":"This article looks at the issues of calculating the operation accuracy of memristor-based hardware when there are some pulse interference (ε-polluted interference with additive white Gaussian noise) in a square signal. Through the example of operation of the memristor-based artificial neural network synapse, you can see that this type of interference in an input signal of memristor-based hardware causes additional error in the values of their output parameters. It was revealed that there is correlation dependence between the values of parameters of noise components in an input signal of a memristor-based artificial neural network (noise and interference variance, an occurrence probability of pulse interference) and the value of synaptic weight.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126475240","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":"Determining computational aspects of submersible electric centrifugal pump installations electric motors parameters","authors":"Y. Kuznetsov, V. V. Anikin","doi":"10.1109/DYNAMICS.2016.7819034","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7819034","url":null,"abstract":"There is ratios estimate accuracy for determining the electromagnetic parameters of submersible asynchronous electric motors (SEM) of electric submersible pumps (ESPs) installations directly on the stator current damping curve i1 (t) recorded from a stationary rotor. Software efficiency was checked up, as it is necessary for its implementation by means of a mobile unit carrying out SEM identification in terms of electro repair shops or on the multiple well platforms surface. Test transient respond software processing error does not exceed 1.5% The discrepancy of 5% was obtained for T3 sub transient time constant. SEM basic electromagnetic parameters error determining was obtained not more than 6.2%.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122225710","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":"Comparative analysis of electrical load forecasting models of industrial plants","authors":"S. Rodygina, A. Rodygin","doi":"10.1109/DYNAMICS.2016.7819072","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7819072","url":null,"abstract":"The paper presents application of STATISTICA v6.0 and STATISTICA NEURAL NETWORKS software for electrical load forecasting. Relevance of forecasting is influenced by the fact that extraction of minerals in oil and gas industry is increasing. As oil extraction and transportation is very power intensive, the problem of load growth has arisen. Then, a task for forecasting of load growth occurs. The results of performed investigations show that the accuracy of short-term load forecasting using models of artificial neural networks (ANN) is better than in the case of using autoregressive integrated moving average (ARIMA) models and gives the least forecast error.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116055103","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":"Functional and circuitry base of control equipment designed for testing large-scale integrated circuits","authors":"A. Nikonov, G. Nikonova","doi":"10.1109/DYNAMICS.2016.7819053","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7819053","url":null,"abstract":"The paper investigates functional and circuitry base used in the development of instrumentation for testing large-scale integrated circuits. Methods for achieving resolution of less than 100 ps with an error of not higher than 10–20 ps are observed. The paper analyses methods of time delay, which can be used for creating digital devices of picosecond range for UHF signals and gives the structure of high-precision digital delay line for UHF range, operating in the 15 ns interval and having the error of not more than 20 ps.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121059627","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":"The research of stabilization properties of inductive-capacitive converters based on the two-sections hybrid electromagnetic elements","authors":"S. Konesev, R. Khazieva, R. Kirillov","doi":"10.1109/DYNAMICS.2016.7819030","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7819030","url":null,"abstract":"Inductive-capacitive converters (ICC) are used in power current stabilization systems (CSS). These include charge capacitive storage device (CCSD), high voltage pulse generators, electrothermal systems, and gas-discharge lamps. They require constant power if their resistance is changed in the wide range. The authors proposed to supply the load with the help of ICC based on hybrid electromagnetic elements (EME). Multifunctional integrated electromagnetic components (MIEC) belongs to them. The application of MIEC in ICC can improve the efficiency and reduce the weight and dimensions of CSS. The elements of ICC are selected according to the accuracy of the load current stabilization. This requires the calculation of electromagnetic processes in ICC. The authors developed the mathematical model of ICC based on the two-section MIEC. This model evaluates the stabilization properties and frequency responses of ICC in CSS. The authors developed the model for the research of electromagnetic processes. The model is built with the integral parameters of MIEC. They include full inductance of the electrical electrodes, the total capacity and the current of the electrical leads. As a result, it was confirmed that a change in the voltage amplitude of MIEC can regulate the level of constant current in the load when MIEC is powered with the inverter. The load current at the resonant mode of MIEC is directly proportional to the supply voltage consequently. We can use these MIEC schemes in charge process of storage capacitor (SC). Thus, linearly increasing voltage is obtained. In it turn, it helps to make charge process of SC economical and energy efficient. Application of MIEC in CCSD reduces weight and dimensions of the device. Two-sections MIEC with successively-connected sections and diagonal connection of the power supply and the load with the electrical lead in the middle of the secondary electrode is expedient to use in devices whose transfer functions should be close to unity, such as in ICC.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"7 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114046169","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":"Optimal control method for the sphericity error using CMMs","authors":"O. V. Zakharov, I. Bobrovskij, Nikolaj M. Bobrovskij, A. Korolev, A. V. Kochetkov, V. Ivashchenko","doi":"10.1109/DYNAMICS.2016.7819113","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2016.7819113","url":null,"abstract":"Spherical surfaces are utilized widely in precision bearing, MEMS and parts of precision engineering. Constantly growing needs in the high motion performance of spherical parts, sphericity error is becoming an indispensable component in the control of form error. However, currently the quality control of a spherical surface is restricted by the lack of science-based mathematical models. This paper presents a unified approach to evaluate sphericity error using three methods: Least Square Sphere, Minimum Zone Sphere, Maximum Inscribed Sphere. The research originated from the need compare the effectiveness of these methods for different requirements for measurement accuracy. Three experiments are used to verify the effectiveness of the methods with 28, 36 and 50 datasets measured on Coordinate Measuring Machines. Presents a mathematical models of sphericity measurement and comparative results of the verification of these models.","PeriodicalId":293543,"journal":{"name":"2016 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122523386","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}