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Decision support system for resource-saving control of extruders at multi-assortment productions of polymeric films

Journal of Physics: Conference Series 2021年第1期1864卷

作者： M.M Fozilov T.B Chistyakova A.N Polosin Department of Computer-Aided Design and Control Systems St. Petersburg State Institute of Technology (Technical University) 26 Moskovsky Avenue St. Petersburg 190013 Russia

A decision support system (DSS) is described, which helps operators to solve the problem of resource-saving control of extruders of various types used in the production of multi-assortment packaging polymer films (PF). It includes an industrial data mining subsystem for predicting the state of extruders and film quality, a subsystem for evaluating the performance of extruders, an information subsystem, and a data visualization subsystem for building trends of controlled and calculated parameters, interfaces for the extruder operator, administrator and knowledge engineer. The results of testing according to the data of extruders produced by PF at factories in Russia and Germany confirmed the efficiency of the DSS. The use of DSS allows you to save the resource of extrusion equipment, increase the time periods between its stops, and reduce the repair time.

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Data mining system for predicting quality of polymeric films

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Journal of Physics: Conference Series 2021年第1期1902卷

作者： T B Chistyakova M A Teterin Department of Computer-Aided Design and Control Systems St. Petersburg State Institute of Technology (Technical University) 26 Moskovsky Avenue St. Petersburg 190013 Russia

A computer data mining system for predicting the quality of polymer films in international, large-scale and multi-assortment industries is described. This article presents a library of statistical and data mining methods that allows, using statistical tests, to test data for distribution normality, predict the quality of polymer film materials for various line configurations and different types of film and includes the following methods: recurrent neural networks, neural network with long short-term memory and convolutional neural network. Analysis of methods of predicting the quality of polymer films was carried out and an algorithm was developed that allows selecting the most appropriate method for predicting the quality of polymer films based on the type of film, line configuration and requirements for film quality. The system includes interfaces that display trends in the process characteristics of the process class. The system was tested using the example of industrial data of the corporation on production of polymer film in plants of Russia and Germany.

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computer system of vibration analysis for evaluating extrusion equipment operability at productions of multi-assortment polymeric films

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Journal of Physics: Conference Series 2021年第1期1902卷

作者： M M Fozilov T B Chistyakova A N Polosin Department of Computer-Aided Design and Control Systems St. Petersburg State Institute of Technology (Technical University) 26 Moskovsky Avenue St. Petersburg 190013 Russia

A computer system of vibration analysis has been developed to evaluate the operability of extrusion equipment. The computer system allows you to timely identify an abnormal situation associated with increased vibration of the extruder screw drive, determine its true cause and form recommendations to the production staff for troubleshooting. The computer system is configured for various types and geometric parameters of extruders used in the extrusion and extrusion-calender production of multi-assortment polymeric films. The algorithm for analyzing vibration signals includes the stages of obtaining the signal spectrum by applying a direct discrete Fourier transform and determining the faulty drive element as a result of analyzing the trend in the amplitudes of the signal harmonics at frequencies characteristic of various types of faulty elements. The computer system is integrated into a single quality control system for multi-assortment polymeric films. The results of testing according to the data of extruders of polymeric film production at plants in Russia and Germany confirmed the performance of the computer system. The use of a computer system allows you to save the life of the extrusion equipment, increase the time periods between its stops, and reduce the repair time.

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A free surface fluid flows modeling 18

A free surface fluid flows modeling

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18th International Multidisciplinary Scientific Geoconference, SGEM 2018

作者： Gushchin, Valentin Kondakov, Vasilii G. Institute for Computer Aided Design of RAS Moscow Russia Nuclear Safety Institute of Russian Academy of Sciences Moscow Russia

ISBN: (纸本)9786197408355

Study of wave motions fluid is one of the most important and complex problems of modern hydrodynamics. This issue is receiving significant attention in fluid mechanics, hydraulics, acoustics, oceanography and physiology of circulation. Special mention should be made of the relevance of the objectives of the movement body of finite size in fluid, ship hydrodynamics tasks, tasks construction of coastal protection, as well as the increasing interest in modeling the planet's climate. The fluid flows in the presence of a free surface are both scientific and practical interest. The theoretical and laboratory researches are performed. With the creation of supercomputers, it became possible to mathematical modeling of the studied processes. Bearing in mind that such flows there are areas with large gradients of hydrodynamic parameters required methods should possess such properties as a high order of accuracy, minimum scheme dissipation and dispersion, as well as monotony. This paper will provide a brief description of the method SMIF (Splitting on physical factors Method for Incompressible Fluid flows) and CABARE method possessing the properties mentioned above. The test calculations and comparison with some theoretical, experimental data and calculations of other authors will be demonstrated. © SGEM2018.

关键词： Numerical methods

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Mathematical Modeling of Fatigue Fracture at High-Frequency Bending Vibrations

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Journal of Physics: Conference Series 2021年第1期1945卷

作者： I S Nikitin N G Burago A D Nikitin B A Stratula Institute for computer aided design of RAS 2-ya Brestskaya st. 123056 Moscow Russia Institute for Problems in Mechanics RAS pr. Vernadskogo 101-1 119526 Moscow Russia

A two-criterion kinetic damage model is proposed to describe the development of the fatigue fracture process under cyclic loading. On this basis, a procedure is proposed for calculating the coefficients of the kinetic equation for various modes of fatigue fracture from low-cycle to very-high-cycle fatigue. A uniform numerical method has been developed based on an implicit approximation of the differential equation for damage. This method makes it possible to carry out an end-to-end calculation of the evolution of crack-like zones of fatigue fracture in the material without considering cracks in their classical sense, as well as to estimate the durability of samples from the first nucleation to macrofracture. Calculations were made of the fatigue fracture of specimens under long-term cyclic loading according to the three-point bending scheme with the development of crack-like fracture zones in the modes from HCF to VHCF. Comparison of numerical and experimental results for specimens of titanium alloys is carried out.

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Formation of high-aspect-ratio nanocavity in LiF crystal using a femtosecond of x-ray FEL pulse

arXiv

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arXiv 2024年

作者： Makarov, Sergey S. Grigoryev, Sergey A. Zhakhovsky, Vasily V. Chuprov, Petr Pikuz, Tatiana A. Inogamov, Nail A. Khokhlov, Victor V. Petrov, Yuri V. Perov, Eugene Shepelev, Vadim Shobu, Takehisa Tominaga, Aki Rapp, Ludovic Rode, Andrei V. Juodkazis, Saulius Makita, Mikako Nakatsutsumi, Motoaki Preston, Thomas R. Appel, Karen Konopkova, Zuzana Cerantola, Valerio Brambrink, Erik Schwinkendorf, Jan-Patrick Mohacsi, István Vozda, Vojtech Hajkova, Vera Burian, Tomas Chalupsky, Jaromir Juha, Libor Ozaki, Norimasa Kodama, Ryosuke Zastrau, Ulf Pikuz, Sergey A. Joint Institute for High Temperatures Russian Academy of Sciences 13/2 Izhorskaya st. Moscow125412 Russia Institute for Computer Aided Design Russian Academy of Sciences Moscow123056 Russia Institute for Open and Transdisciplinary Research Initiatives Osaka University Suita Osaka565-0871 Japan Landau Institute for Theoretical Physics Russian Academy of Sciences 1-A Akademika Semenova av. Chernogolovka Region Moscow142432 Russia The facility is Material Science Research Center Japan Atomic Energy Agency Sayo Hyogo 679-5148 Japan Laser Physics Centre Department of Quantum Science and Technology Research School of Physics Australian National University CanberraACT2600 Australia School of Science Swinburne University of Technology HawthornVIC3122 Australia School of Materials and Chemical Technology Tokyo Institute of Technology Tokyo152-8550 Japan European XFEL Holzkoppel 4 Hamburg22869 Germany Università degli Studi di Milano Bicocca Piazza della Scienza 4 Milano20126 Italy Department of Radiation and Chemical Physics Institute of Physics Czech Academy of Sciences Na Slovance 1999/2 Prague 8182 00 Czech Republic Graduate School of Engineering Osaka University Suita Osaka565-0871 Japan Institute of Laser Engineering Osaka University Suita Osaka565-0871 Japan HB11 Energy Holdings FreshwaterNSW2095 Australia

Sub-picosecond optical laser processing of metals is actively utilized for modification of a heated surface layer. But for deeper modification of different materials a laser in the hard x-ray range is required. Here, we demonstrate that a single 9-keV x-ray pulse from a free-electron laser can form a µm-diameter cylindrical cavity with length of ~1 mm in LiF surrounded by shock-transformed material. The plasma-generated shock wave with TPa-level pressure results in damage, melting and polymorphic transformations of any material, including transparent and non-transparent to conventional optical lasers. Moreover, cylindrical shocks can be utilized to obtain a considerable amount of exotic high-pressure polymorphs. Pressure wave propagation in LiF, radial material flow, formation of cracks and voids are analyzed via continuum and atomistic simulations revealing a sequence of processes leading to the final structure with the long cavity. Similar results can be produced with semiconductors and ceramics, which opens a new pathway for development of laser material processing with hard x-ray pulses. Copyright © 2024, The Authors. All rights reserved.

关键词： Laser materials processing

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Modelling hydraulic mixture movement along the extraction chamber bottom in case of hydraulic washout of the tuff-stone 14

Modelling hydraulic mixture movement along the extraction ch...

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14th International Research and Practice Conference on Ukrainian School of Mining Engineering, USME 2020

作者： Malanchuk, Zinovii Moshynskyi, Viktor Martyniuk, Petro Stets, Sergii Galiyev, Daniyar National University of Water Management and Nature Resources Use Department of Development of Deposits and Mining 11 Soborna St. Rivne33028 Ukraine National University of Water Management and Nature Resources Use Department of Land Cadastre Land Monitoring and Geoinformatics 11 Soborna St. Rivne33028 Ukraine National University of Water Management and Nature Resources Use Department of Computer Science and Applied Mathematics 11 Soborna St. Rivne33028 Ukraine National University of Water Management and Nature Resources Use Institute of Postgraduate Education 11 24 Serpnia St. Rivne33000 Ukraine Institute of Mining Named after D.A. Kunaev Laboratory of Computer-Aided Design 191 Abai Ave. Almaty050046 Kazakhstan

This paper presents the research results of the pulp movement process along the extraction chamber bottom to the suction pipe of the pulp lifting device in case of downhole hydraulic mining the volcanic tuff-stone. The washout process and hydraulically operated transportation of the tuff-stone hydraulic mixture, when forming the extraction chamber, have been studied under various conditions and methods of exposure. As a result, the dominant parameters have been determined influencing the hydrodynamic washout technology as well as tuff-stone hydraulic mixture lifting to the alluviation map. The dependences have been substantiated of the washout process performance and transportation capacity of the hydraulic mixture flow on the determined parameters. To calculate the process of pulp flow-over along the extraction chamber bottom to the intaking hydraulic elevator headwall, the systems of equations have been determined based on the modelling the movement of tuff-stone hydraulic mixture along the extraction chamber bottom during hydraulic washout. The dependences of the contact strength of the tuff-stone samples mined by downhole method on the time spent in water are presented, resulting in determination of the tuff-stone weakening coefficient and the degree of its saturation with water. © The Authors, published by EDP Sciences 2020.

关键词： Extraction

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Erratum to: Several Articles in JETP Letters

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JETP Letters 2022年第8期116卷 589-591页

作者： Godunov, S. I. Karkaryan, E. K. Novikov, V. A. Rozanov, A. N. Vysotsky, M. I. Zhemchugov, E. V. Inogamov, N. A. Perov, E. A. Zhakhovsky, V. V. Shepelev, V. V. Petrov, Yu. V. Fortova, S. V. Tarasenko, S. V. Shavrov, V. G. Valeev, B. Yu. Toksumakov, A. N. Kvashnin, D. G. Chernozatonskii, L. A. Makarov, A. S. Kretova, M. A. Afonin, G. V. Qiao, J. C. Glezer, A. M. Kobelev, N. P. Khonik, V. A. Klumov, B. A. Magadeev, E. B. Vakhitov, R. M. Tamm Department of Theoretical Physics Lebedev Physical Institute Russian Academy of Sciences Moscow Russia Alikhanov Institute for Theoretical and Experimental Physics National Research Center Kurchatov Institute Moscow Russia Centre de Physique des Particules de Marseille CPPM Aix-Marseille Universite CNRS/IN2P3 Marseille France Landau Institute for Theoretical Physics Russian Academy of Sciences Chernogolovka Russia Joint Institute for High Temperatures Russian Academy of Sciences Moscow Russia All-Russia Research Institute of Automatics Moscow Russia Institute for Computer Aided Design Russian Academy of Sciences Moscow Russia Moscow Institute of Physics and Technology (National Research University) Dolgoprudnyi Russia Dоnetsk Institute for Physics and Engineering Donetsk Ukraine Kotelnikov Institute of Radio Engineering and Electronics Russian Academy of Sciences Moscow Russia Emanuel Institute of Biochemical Physics Russian Academy of Sciences Moscow Russia Scientific School on Chemistry and Technology of Polymer Materials Plekhanov Russian University of Economics Moscow Russia Voronezh State Pedagogical University Voronezh Russia School of Mechanics Civil Engineering and Architecture Northwestern Polytechnical University Xi’an People’s Republic of China National University of Science and Technology MISiS Moscow Russia Institute of Solid State Physics Russian Academy of Sciences Chernogolovka Russia Bashkir State University Ufa Russia

An Erratum to this paper has been published: https://***/10.1134/S0021364022340021

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Energy Adaptive Convolution Neural Network Using Dynamic Partial Reconfiguration

Energy Adaptive Convolution Neural Network Using Dynamic Par...

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Midwest Symposium on Circuits and Systems (MWSCAS)

作者： Eman Youssef Hamed A. Elsemary Magdy A. El-Moursy Ahmed Khattab Hassan Mostafa Microelectronics Department Electronics Research Institute (ERI) Cairo Egypt Computer Engineering Dept Prince Sattam Bin Abdulaziz University KSA Design Creation Division Mentor Graphics Cairo Egypt Electronics and Communications Engineering Faculty of Engineering Cairo University Giza Egypt

ISBN: (数字)9781728180588

ISBN: (纸本)9781728180595

Convolutional Neural Network (CNN) is a good candidate for computer vision applications. CNN is well known for its great classification accuracy at image recognition tasks. The cost of CNN is its large power consumption as it needs a lot of multiplication and addition operations. Approximation can reduce the power consumption. CNNs can be implemented by CPUs, GPUs or FPGAs. In this paper, the proposed CNN is implemented on Xilinx XC7Z020 FPGA and is trained to recognize MNIST dataset This CNN is approximated through quantization which reduces the accuracy only by 0.53% while using 7-bits for the implementation. A reduction of 2.7X is achieved in energy consumption compared to the conventional design which uses 16-bits. Dynamic Partial Reconfiguration (DPR) reconfigures the FPGA during the run time with appropriate power consumption design if the battery level decreases. This enables recognition applications to run with low power budget but with sacrificing minor accuracy instead of termination.

关键词： Field programmable gate arrays Convolution Hardware Biological neural networks Training Image recognition Neurons

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Optimizing Bedaquiline for cardiotoxicity by structure based virtual screening, DFT analysis and molecular dynamic simulation studies to identify selective MDR-TB inhibitors

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In silico pharmacology 2021年第1期9卷 23页

作者： Iqrar Ahmad Harsha Jadhav Yashodeep Shinde Vilas Jagtap Rukaiyya Girase Harun Patel Division of Computer Aided Drug Design Department of Pharmaceutical Chemistry R. C. Patel Institute of Pharmaceutical Education and Research Shirpur Dhule 425405 Maharashtra India.

Since the last 4 decades, Bedaquiline has been the first drug discovered as a new kind of anti-tubercular agent and received FDA approval in December 2012 to treat pulmonary multi-drug resistance tuberculosis (MDR-TB). It demonstrates excellent efficacy against MDR-TB by effectively inhibiting mycobacterial ATP synthase. In addition to these apparent assets of Bedaquiline, potential disadvantages of Bedaquiline include inhibition of the hERG (human Ether-à-go-related gene; KCNH2), potassium channel (concurrent risk of cardiac toxicity), and risk of phospholipidosis due to its more lipophilic nature. To assist the effective treatment of MDR-TB, highly active Bedaquiline analogs that display a better safety profile are urgently needed. A structure-based virtual screening approach was used to address the toxicity problems associated with Bedaquiline. Among the virtually screened compound, CID 15947587 had significant docking affinity (− 5.636 kcal/mol) and highest binding free energy (ΔG bind − 85.2703 kcal/mol) towards the Mycobacterial ATP synthase enzyme with insignificant cardiotoxicity and lipophilicity. During MD simulation studies (50 ns), the molecule optimizes its conformation to fit better the active receptor site justifying the binding affinity. The obtained results showed that CID15947587 could be a useful template for further optimizing the MDR-TB inhibitor.

关键词： Bedaquiline Docking HERG MD simulation MMGBSA

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